![Jesse Barnes](/assets/img/avatar_default.png)
The ring frequency scaling table tells the PCU to treat certain GPU frequencies as if they were a given CPU frequency for purposes of scaling the ring frequency. Normally the PCU will scale the ring frequency based on the CPU P-state, but with the table present, it will also take the GPU frequency into account. The main downside of keeping the ring frequency high while the CPU is at a low frequency (or asleep altogether) is increased power consumption. But then if you're keeping your GPU busy, you probably want the extra performance. v2: - add units to debug table header (from Eric) - use tsc_khz as a fallback if the cpufreq driver doesn't give us a freq (from Chris) v3: - fix comments & debug output - remove unneeded force wake get/put Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Tested-by: Eric Anholt <eric@anholt.net> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Keith Packard <keithp@keithp.com>
8183 lines
220 KiB
C
8183 lines
220 KiB
C
/*
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* Copyright © 2006-2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*/
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#include <linux/cpufreq.h>
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#include <linux/module.h>
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#include <linux/input.h>
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#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/vgaarb.h>
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#include "drmP.h"
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#include "intel_drv.h"
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#include "i915_drm.h"
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#include "i915_drv.h"
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#include "i915_trace.h"
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#include "drm_dp_helper.h"
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#include "drm_crtc_helper.h"
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#define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
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bool intel_pipe_has_type (struct drm_crtc *crtc, int type);
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static void intel_update_watermarks(struct drm_device *dev);
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static void intel_increase_pllclock(struct drm_crtc *crtc);
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static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
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typedef struct {
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/* given values */
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int n;
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int m1, m2;
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int p1, p2;
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/* derived values */
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int dot;
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int vco;
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int m;
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int p;
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} intel_clock_t;
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typedef struct {
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int min, max;
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} intel_range_t;
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typedef struct {
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int dot_limit;
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int p2_slow, p2_fast;
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} intel_p2_t;
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#define INTEL_P2_NUM 2
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typedef struct intel_limit intel_limit_t;
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struct intel_limit {
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intel_range_t dot, vco, n, m, m1, m2, p, p1;
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intel_p2_t p2;
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bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
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int, int, intel_clock_t *);
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};
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/* FDI */
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#define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */
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static bool
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intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
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int target, int refclk, intel_clock_t *best_clock);
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static bool
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intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
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int target, int refclk, intel_clock_t *best_clock);
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static bool
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intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
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int target, int refclk, intel_clock_t *best_clock);
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static bool
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intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
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int target, int refclk, intel_clock_t *best_clock);
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static inline u32 /* units of 100MHz */
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intel_fdi_link_freq(struct drm_device *dev)
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{
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if (IS_GEN5(dev)) {
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struct drm_i915_private *dev_priv = dev->dev_private;
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return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
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} else
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return 27;
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}
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static const intel_limit_t intel_limits_i8xx_dvo = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 930000, .max = 1400000 },
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.n = { .min = 3, .max = 16 },
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.m = { .min = 96, .max = 140 },
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.m1 = { .min = 18, .max = 26 },
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.m2 = { .min = 6, .max = 16 },
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.p = { .min = 4, .max = 128 },
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.p1 = { .min = 2, .max = 33 },
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.p2 = { .dot_limit = 165000,
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.p2_slow = 4, .p2_fast = 2 },
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.find_pll = intel_find_best_PLL,
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};
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static const intel_limit_t intel_limits_i8xx_lvds = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 930000, .max = 1400000 },
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.n = { .min = 3, .max = 16 },
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.m = { .min = 96, .max = 140 },
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.m1 = { .min = 18, .max = 26 },
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.m2 = { .min = 6, .max = 16 },
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.p = { .min = 4, .max = 128 },
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.p1 = { .min = 1, .max = 6 },
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.p2 = { .dot_limit = 165000,
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.p2_slow = 14, .p2_fast = 7 },
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.find_pll = intel_find_best_PLL,
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};
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static const intel_limit_t intel_limits_i9xx_sdvo = {
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.dot = { .min = 20000, .max = 400000 },
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.vco = { .min = 1400000, .max = 2800000 },
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.n = { .min = 1, .max = 6 },
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.m = { .min = 70, .max = 120 },
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.m1 = { .min = 10, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 5, .max = 80 },
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.p1 = { .min = 1, .max = 8 },
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.p2 = { .dot_limit = 200000,
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.p2_slow = 10, .p2_fast = 5 },
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.find_pll = intel_find_best_PLL,
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};
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static const intel_limit_t intel_limits_i9xx_lvds = {
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.dot = { .min = 20000, .max = 400000 },
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.vco = { .min = 1400000, .max = 2800000 },
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.n = { .min = 1, .max = 6 },
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.m = { .min = 70, .max = 120 },
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.m1 = { .min = 10, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 7, .max = 98 },
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.p1 = { .min = 1, .max = 8 },
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.p2 = { .dot_limit = 112000,
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.p2_slow = 14, .p2_fast = 7 },
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.find_pll = intel_find_best_PLL,
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};
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static const intel_limit_t intel_limits_g4x_sdvo = {
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.dot = { .min = 25000, .max = 270000 },
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.vco = { .min = 1750000, .max = 3500000},
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.n = { .min = 1, .max = 4 },
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.m = { .min = 104, .max = 138 },
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.m1 = { .min = 17, .max = 23 },
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.m2 = { .min = 5, .max = 11 },
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.p = { .min = 10, .max = 30 },
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.p1 = { .min = 1, .max = 3},
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.p2 = { .dot_limit = 270000,
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.p2_slow = 10,
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.p2_fast = 10
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},
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_g4x_hdmi = {
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.dot = { .min = 22000, .max = 400000 },
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.vco = { .min = 1750000, .max = 3500000},
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.n = { .min = 1, .max = 4 },
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.m = { .min = 104, .max = 138 },
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.m1 = { .min = 16, .max = 23 },
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.m2 = { .min = 5, .max = 11 },
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.p = { .min = 5, .max = 80 },
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.p1 = { .min = 1, .max = 8},
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.p2 = { .dot_limit = 165000,
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.p2_slow = 10, .p2_fast = 5 },
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
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.dot = { .min = 20000, .max = 115000 },
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.vco = { .min = 1750000, .max = 3500000 },
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.n = { .min = 1, .max = 3 },
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.m = { .min = 104, .max = 138 },
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.m1 = { .min = 17, .max = 23 },
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.m2 = { .min = 5, .max = 11 },
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.p = { .min = 28, .max = 112 },
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.p1 = { .min = 2, .max = 8 },
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.p2 = { .dot_limit = 0,
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.p2_slow = 14, .p2_fast = 14
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},
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
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.dot = { .min = 80000, .max = 224000 },
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.vco = { .min = 1750000, .max = 3500000 },
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.n = { .min = 1, .max = 3 },
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.m = { .min = 104, .max = 138 },
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.m1 = { .min = 17, .max = 23 },
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.m2 = { .min = 5, .max = 11 },
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.p = { .min = 14, .max = 42 },
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.p1 = { .min = 2, .max = 6 },
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.p2 = { .dot_limit = 0,
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.p2_slow = 7, .p2_fast = 7
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},
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_g4x_display_port = {
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.dot = { .min = 161670, .max = 227000 },
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.vco = { .min = 1750000, .max = 3500000},
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.n = { .min = 1, .max = 2 },
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.m = { .min = 97, .max = 108 },
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.m1 = { .min = 0x10, .max = 0x12 },
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.m2 = { .min = 0x05, .max = 0x06 },
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.p = { .min = 10, .max = 20 },
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.p1 = { .min = 1, .max = 2},
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.p2 = { .dot_limit = 0,
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.p2_slow = 10, .p2_fast = 10 },
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.find_pll = intel_find_pll_g4x_dp,
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};
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static const intel_limit_t intel_limits_pineview_sdvo = {
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.dot = { .min = 20000, .max = 400000},
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.vco = { .min = 1700000, .max = 3500000 },
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/* Pineview's Ncounter is a ring counter */
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.n = { .min = 3, .max = 6 },
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.m = { .min = 2, .max = 256 },
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/* Pineview only has one combined m divider, which we treat as m2. */
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.m1 = { .min = 0, .max = 0 },
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.m2 = { .min = 0, .max = 254 },
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.p = { .min = 5, .max = 80 },
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.p1 = { .min = 1, .max = 8 },
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.p2 = { .dot_limit = 200000,
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.p2_slow = 10, .p2_fast = 5 },
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.find_pll = intel_find_best_PLL,
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};
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static const intel_limit_t intel_limits_pineview_lvds = {
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.dot = { .min = 20000, .max = 400000 },
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.vco = { .min = 1700000, .max = 3500000 },
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.n = { .min = 3, .max = 6 },
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.m = { .min = 2, .max = 256 },
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.m1 = { .min = 0, .max = 0 },
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.m2 = { .min = 0, .max = 254 },
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.p = { .min = 7, .max = 112 },
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.p1 = { .min = 1, .max = 8 },
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.p2 = { .dot_limit = 112000,
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.p2_slow = 14, .p2_fast = 14 },
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.find_pll = intel_find_best_PLL,
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};
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/* Ironlake / Sandybridge
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*
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* We calculate clock using (register_value + 2) for N/M1/M2, so here
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* the range value for them is (actual_value - 2).
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*/
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static const intel_limit_t intel_limits_ironlake_dac = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 1760000, .max = 3510000 },
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.n = { .min = 1, .max = 5 },
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.m = { .min = 79, .max = 127 },
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.m1 = { .min = 12, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 5, .max = 80 },
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.p1 = { .min = 1, .max = 8 },
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.p2 = { .dot_limit = 225000,
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.p2_slow = 10, .p2_fast = 5 },
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_ironlake_single_lvds = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 1760000, .max = 3510000 },
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.n = { .min = 1, .max = 3 },
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.m = { .min = 79, .max = 118 },
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.m1 = { .min = 12, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 28, .max = 112 },
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.p1 = { .min = 2, .max = 8 },
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.p2 = { .dot_limit = 225000,
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.p2_slow = 14, .p2_fast = 14 },
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_ironlake_dual_lvds = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 1760000, .max = 3510000 },
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.n = { .min = 1, .max = 3 },
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.m = { .min = 79, .max = 127 },
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.m1 = { .min = 12, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 14, .max = 56 },
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.p1 = { .min = 2, .max = 8 },
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.p2 = { .dot_limit = 225000,
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.p2_slow = 7, .p2_fast = 7 },
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.find_pll = intel_g4x_find_best_PLL,
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};
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/* LVDS 100mhz refclk limits. */
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static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 1760000, .max = 3510000 },
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.n = { .min = 1, .max = 2 },
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.m = { .min = 79, .max = 126 },
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.m1 = { .min = 12, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 28, .max = 112 },
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.p1 = { .min = 2,.max = 8 },
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.p2 = { .dot_limit = 225000,
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.p2_slow = 14, .p2_fast = 14 },
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 1760000, .max = 3510000 },
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.n = { .min = 1, .max = 3 },
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.m = { .min = 79, .max = 126 },
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.m1 = { .min = 12, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 14, .max = 42 },
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.p1 = { .min = 2,.max = 6 },
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.p2 = { .dot_limit = 225000,
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.p2_slow = 7, .p2_fast = 7 },
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.find_pll = intel_g4x_find_best_PLL,
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};
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static const intel_limit_t intel_limits_ironlake_display_port = {
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.dot = { .min = 25000, .max = 350000 },
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.vco = { .min = 1760000, .max = 3510000},
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.n = { .min = 1, .max = 2 },
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.m = { .min = 81, .max = 90 },
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.m1 = { .min = 12, .max = 22 },
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.m2 = { .min = 5, .max = 9 },
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.p = { .min = 10, .max = 20 },
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.p1 = { .min = 1, .max = 2},
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.p2 = { .dot_limit = 0,
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.p2_slow = 10, .p2_fast = 10 },
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.find_pll = intel_find_pll_ironlake_dp,
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};
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static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
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int refclk)
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{
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struct drm_device *dev = crtc->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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const intel_limit_t *limit;
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if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
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if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
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LVDS_CLKB_POWER_UP) {
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/* LVDS dual channel */
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if (refclk == 100000)
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limit = &intel_limits_ironlake_dual_lvds_100m;
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else
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limit = &intel_limits_ironlake_dual_lvds;
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} else {
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if (refclk == 100000)
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limit = &intel_limits_ironlake_single_lvds_100m;
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else
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limit = &intel_limits_ironlake_single_lvds;
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}
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} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
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HAS_eDP)
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limit = &intel_limits_ironlake_display_port;
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else
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limit = &intel_limits_ironlake_dac;
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return limit;
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}
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static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
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{
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struct drm_device *dev = crtc->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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const intel_limit_t *limit;
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if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
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if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
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LVDS_CLKB_POWER_UP)
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/* LVDS with dual channel */
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limit = &intel_limits_g4x_dual_channel_lvds;
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else
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/* LVDS with dual channel */
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limit = &intel_limits_g4x_single_channel_lvds;
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} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
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intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
|
|
limit = &intel_limits_g4x_hdmi;
|
|
} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
|
|
limit = &intel_limits_g4x_sdvo;
|
|
} else if (intel_pipe_has_type (crtc, INTEL_OUTPUT_DISPLAYPORT)) {
|
|
limit = &intel_limits_g4x_display_port;
|
|
} else /* The option is for other outputs */
|
|
limit = &intel_limits_i9xx_sdvo;
|
|
|
|
return limit;
|
|
}
|
|
|
|
static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
const intel_limit_t *limit;
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
limit = intel_ironlake_limit(crtc, refclk);
|
|
else if (IS_G4X(dev)) {
|
|
limit = intel_g4x_limit(crtc);
|
|
} else if (IS_PINEVIEW(dev)) {
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
|
|
limit = &intel_limits_pineview_lvds;
|
|
else
|
|
limit = &intel_limits_pineview_sdvo;
|
|
} else if (!IS_GEN2(dev)) {
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
|
|
limit = &intel_limits_i9xx_lvds;
|
|
else
|
|
limit = &intel_limits_i9xx_sdvo;
|
|
} else {
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
|
|
limit = &intel_limits_i8xx_lvds;
|
|
else
|
|
limit = &intel_limits_i8xx_dvo;
|
|
}
|
|
return limit;
|
|
}
|
|
|
|
/* m1 is reserved as 0 in Pineview, n is a ring counter */
|
|
static void pineview_clock(int refclk, intel_clock_t *clock)
|
|
{
|
|
clock->m = clock->m2 + 2;
|
|
clock->p = clock->p1 * clock->p2;
|
|
clock->vco = refclk * clock->m / clock->n;
|
|
clock->dot = clock->vco / clock->p;
|
|
}
|
|
|
|
static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
|
|
{
|
|
if (IS_PINEVIEW(dev)) {
|
|
pineview_clock(refclk, clock);
|
|
return;
|
|
}
|
|
clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
|
|
clock->p = clock->p1 * clock->p2;
|
|
clock->vco = refclk * clock->m / (clock->n + 2);
|
|
clock->dot = clock->vco / clock->p;
|
|
}
|
|
|
|
/**
|
|
* Returns whether any output on the specified pipe is of the specified type
|
|
*/
|
|
bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_mode_config *mode_config = &dev->mode_config;
|
|
struct intel_encoder *encoder;
|
|
|
|
list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
|
|
if (encoder->base.crtc == crtc && encoder->type == type)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
#define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
|
|
/**
|
|
* Returns whether the given set of divisors are valid for a given refclk with
|
|
* the given connectors.
|
|
*/
|
|
|
|
static bool intel_PLL_is_valid(struct drm_device *dev,
|
|
const intel_limit_t *limit,
|
|
const intel_clock_t *clock)
|
|
{
|
|
if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
|
|
INTELPllInvalid ("p1 out of range\n");
|
|
if (clock->p < limit->p.min || limit->p.max < clock->p)
|
|
INTELPllInvalid ("p out of range\n");
|
|
if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
|
|
INTELPllInvalid ("m2 out of range\n");
|
|
if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
|
|
INTELPllInvalid ("m1 out of range\n");
|
|
if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
|
|
INTELPllInvalid ("m1 <= m2\n");
|
|
if (clock->m < limit->m.min || limit->m.max < clock->m)
|
|
INTELPllInvalid ("m out of range\n");
|
|
if (clock->n < limit->n.min || limit->n.max < clock->n)
|
|
INTELPllInvalid ("n out of range\n");
|
|
if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
|
|
INTELPllInvalid ("vco out of range\n");
|
|
/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
|
|
* connector, etc., rather than just a single range.
|
|
*/
|
|
if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
|
|
INTELPllInvalid ("dot out of range\n");
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
|
|
int target, int refclk, intel_clock_t *best_clock)
|
|
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
intel_clock_t clock;
|
|
int err = target;
|
|
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
|
|
(I915_READ(LVDS)) != 0) {
|
|
/*
|
|
* For LVDS, if the panel is on, just rely on its current
|
|
* settings for dual-channel. We haven't figured out how to
|
|
* reliably set up different single/dual channel state, if we
|
|
* even can.
|
|
*/
|
|
if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
|
|
LVDS_CLKB_POWER_UP)
|
|
clock.p2 = limit->p2.p2_fast;
|
|
else
|
|
clock.p2 = limit->p2.p2_slow;
|
|
} else {
|
|
if (target < limit->p2.dot_limit)
|
|
clock.p2 = limit->p2.p2_slow;
|
|
else
|
|
clock.p2 = limit->p2.p2_fast;
|
|
}
|
|
|
|
memset (best_clock, 0, sizeof (*best_clock));
|
|
|
|
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
|
|
clock.m1++) {
|
|
for (clock.m2 = limit->m2.min;
|
|
clock.m2 <= limit->m2.max; clock.m2++) {
|
|
/* m1 is always 0 in Pineview */
|
|
if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
|
|
break;
|
|
for (clock.n = limit->n.min;
|
|
clock.n <= limit->n.max; clock.n++) {
|
|
for (clock.p1 = limit->p1.min;
|
|
clock.p1 <= limit->p1.max; clock.p1++) {
|
|
int this_err;
|
|
|
|
intel_clock(dev, refclk, &clock);
|
|
if (!intel_PLL_is_valid(dev, limit,
|
|
&clock))
|
|
continue;
|
|
|
|
this_err = abs(clock.dot - target);
|
|
if (this_err < err) {
|
|
*best_clock = clock;
|
|
err = this_err;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return (err != target);
|
|
}
|
|
|
|
static bool
|
|
intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
|
|
int target, int refclk, intel_clock_t *best_clock)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
intel_clock_t clock;
|
|
int max_n;
|
|
bool found;
|
|
/* approximately equals target * 0.00585 */
|
|
int err_most = (target >> 8) + (target >> 9);
|
|
found = false;
|
|
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
|
|
int lvds_reg;
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
lvds_reg = PCH_LVDS;
|
|
else
|
|
lvds_reg = LVDS;
|
|
if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
|
|
LVDS_CLKB_POWER_UP)
|
|
clock.p2 = limit->p2.p2_fast;
|
|
else
|
|
clock.p2 = limit->p2.p2_slow;
|
|
} else {
|
|
if (target < limit->p2.dot_limit)
|
|
clock.p2 = limit->p2.p2_slow;
|
|
else
|
|
clock.p2 = limit->p2.p2_fast;
|
|
}
|
|
|
|
memset(best_clock, 0, sizeof(*best_clock));
|
|
max_n = limit->n.max;
|
|
/* based on hardware requirement, prefer smaller n to precision */
|
|
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
|
|
/* based on hardware requirement, prefere larger m1,m2 */
|
|
for (clock.m1 = limit->m1.max;
|
|
clock.m1 >= limit->m1.min; clock.m1--) {
|
|
for (clock.m2 = limit->m2.max;
|
|
clock.m2 >= limit->m2.min; clock.m2--) {
|
|
for (clock.p1 = limit->p1.max;
|
|
clock.p1 >= limit->p1.min; clock.p1--) {
|
|
int this_err;
|
|
|
|
intel_clock(dev, refclk, &clock);
|
|
if (!intel_PLL_is_valid(dev, limit,
|
|
&clock))
|
|
continue;
|
|
|
|
this_err = abs(clock.dot - target);
|
|
if (this_err < err_most) {
|
|
*best_clock = clock;
|
|
err_most = this_err;
|
|
max_n = clock.n;
|
|
found = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return found;
|
|
}
|
|
|
|
static bool
|
|
intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
|
|
int target, int refclk, intel_clock_t *best_clock)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
intel_clock_t clock;
|
|
|
|
if (target < 200000) {
|
|
clock.n = 1;
|
|
clock.p1 = 2;
|
|
clock.p2 = 10;
|
|
clock.m1 = 12;
|
|
clock.m2 = 9;
|
|
} else {
|
|
clock.n = 2;
|
|
clock.p1 = 1;
|
|
clock.p2 = 10;
|
|
clock.m1 = 14;
|
|
clock.m2 = 8;
|
|
}
|
|
intel_clock(dev, refclk, &clock);
|
|
memcpy(best_clock, &clock, sizeof(intel_clock_t));
|
|
return true;
|
|
}
|
|
|
|
/* DisplayPort has only two frequencies, 162MHz and 270MHz */
|
|
static bool
|
|
intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
|
|
int target, int refclk, intel_clock_t *best_clock)
|
|
{
|
|
intel_clock_t clock;
|
|
if (target < 200000) {
|
|
clock.p1 = 2;
|
|
clock.p2 = 10;
|
|
clock.n = 2;
|
|
clock.m1 = 23;
|
|
clock.m2 = 8;
|
|
} else {
|
|
clock.p1 = 1;
|
|
clock.p2 = 10;
|
|
clock.n = 1;
|
|
clock.m1 = 14;
|
|
clock.m2 = 2;
|
|
}
|
|
clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
|
|
clock.p = (clock.p1 * clock.p2);
|
|
clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
|
|
clock.vco = 0;
|
|
memcpy(best_clock, &clock, sizeof(intel_clock_t));
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* intel_wait_for_vblank - wait for vblank on a given pipe
|
|
* @dev: drm device
|
|
* @pipe: pipe to wait for
|
|
*
|
|
* Wait for vblank to occur on a given pipe. Needed for various bits of
|
|
* mode setting code.
|
|
*/
|
|
void intel_wait_for_vblank(struct drm_device *dev, int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int pipestat_reg = PIPESTAT(pipe);
|
|
|
|
/* Clear existing vblank status. Note this will clear any other
|
|
* sticky status fields as well.
|
|
*
|
|
* This races with i915_driver_irq_handler() with the result
|
|
* that either function could miss a vblank event. Here it is not
|
|
* fatal, as we will either wait upon the next vblank interrupt or
|
|
* timeout. Generally speaking intel_wait_for_vblank() is only
|
|
* called during modeset at which time the GPU should be idle and
|
|
* should *not* be performing page flips and thus not waiting on
|
|
* vblanks...
|
|
* Currently, the result of us stealing a vblank from the irq
|
|
* handler is that a single frame will be skipped during swapbuffers.
|
|
*/
|
|
I915_WRITE(pipestat_reg,
|
|
I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
|
|
|
|
/* Wait for vblank interrupt bit to set */
|
|
if (wait_for(I915_READ(pipestat_reg) &
|
|
PIPE_VBLANK_INTERRUPT_STATUS,
|
|
50))
|
|
DRM_DEBUG_KMS("vblank wait timed out\n");
|
|
}
|
|
|
|
/*
|
|
* intel_wait_for_pipe_off - wait for pipe to turn off
|
|
* @dev: drm device
|
|
* @pipe: pipe to wait for
|
|
*
|
|
* After disabling a pipe, we can't wait for vblank in the usual way,
|
|
* spinning on the vblank interrupt status bit, since we won't actually
|
|
* see an interrupt when the pipe is disabled.
|
|
*
|
|
* On Gen4 and above:
|
|
* wait for the pipe register state bit to turn off
|
|
*
|
|
* Otherwise:
|
|
* wait for the display line value to settle (it usually
|
|
* ends up stopping at the start of the next frame).
|
|
*
|
|
*/
|
|
void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
int reg = PIPECONF(pipe);
|
|
|
|
/* Wait for the Pipe State to go off */
|
|
if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
|
|
100))
|
|
DRM_DEBUG_KMS("pipe_off wait timed out\n");
|
|
} else {
|
|
u32 last_line;
|
|
int reg = PIPEDSL(pipe);
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(100);
|
|
|
|
/* Wait for the display line to settle */
|
|
do {
|
|
last_line = I915_READ(reg) & DSL_LINEMASK;
|
|
mdelay(5);
|
|
} while (((I915_READ(reg) & DSL_LINEMASK) != last_line) &&
|
|
time_after(timeout, jiffies));
|
|
if (time_after(jiffies, timeout))
|
|
DRM_DEBUG_KMS("pipe_off wait timed out\n");
|
|
}
|
|
}
|
|
|
|
static const char *state_string(bool enabled)
|
|
{
|
|
return enabled ? "on" : "off";
|
|
}
|
|
|
|
/* Only for pre-ILK configs */
|
|
static void assert_pll(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, bool state)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
bool cur_state;
|
|
|
|
reg = DPLL(pipe);
|
|
val = I915_READ(reg);
|
|
cur_state = !!(val & DPLL_VCO_ENABLE);
|
|
WARN(cur_state != state,
|
|
"PLL state assertion failure (expected %s, current %s)\n",
|
|
state_string(state), state_string(cur_state));
|
|
}
|
|
#define assert_pll_enabled(d, p) assert_pll(d, p, true)
|
|
#define assert_pll_disabled(d, p) assert_pll(d, p, false)
|
|
|
|
/* For ILK+ */
|
|
static void assert_pch_pll(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, bool state)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
bool cur_state;
|
|
|
|
reg = PCH_DPLL(pipe);
|
|
val = I915_READ(reg);
|
|
cur_state = !!(val & DPLL_VCO_ENABLE);
|
|
WARN(cur_state != state,
|
|
"PCH PLL state assertion failure (expected %s, current %s)\n",
|
|
state_string(state), state_string(cur_state));
|
|
}
|
|
#define assert_pch_pll_enabled(d, p) assert_pch_pll(d, p, true)
|
|
#define assert_pch_pll_disabled(d, p) assert_pch_pll(d, p, false)
|
|
|
|
static void assert_fdi_tx(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, bool state)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
bool cur_state;
|
|
|
|
reg = FDI_TX_CTL(pipe);
|
|
val = I915_READ(reg);
|
|
cur_state = !!(val & FDI_TX_ENABLE);
|
|
WARN(cur_state != state,
|
|
"FDI TX state assertion failure (expected %s, current %s)\n",
|
|
state_string(state), state_string(cur_state));
|
|
}
|
|
#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
|
|
#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
|
|
|
|
static void assert_fdi_rx(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, bool state)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
bool cur_state;
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
val = I915_READ(reg);
|
|
cur_state = !!(val & FDI_RX_ENABLE);
|
|
WARN(cur_state != state,
|
|
"FDI RX state assertion failure (expected %s, current %s)\n",
|
|
state_string(state), state_string(cur_state));
|
|
}
|
|
#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
|
|
#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
|
|
|
|
static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* ILK FDI PLL is always enabled */
|
|
if (dev_priv->info->gen == 5)
|
|
return;
|
|
|
|
reg = FDI_TX_CTL(pipe);
|
|
val = I915_READ(reg);
|
|
WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
|
|
}
|
|
|
|
static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
val = I915_READ(reg);
|
|
WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
|
|
}
|
|
|
|
static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int pp_reg, lvds_reg;
|
|
u32 val;
|
|
enum pipe panel_pipe = PIPE_A;
|
|
bool locked = locked;
|
|
|
|
if (HAS_PCH_SPLIT(dev_priv->dev)) {
|
|
pp_reg = PCH_PP_CONTROL;
|
|
lvds_reg = PCH_LVDS;
|
|
} else {
|
|
pp_reg = PP_CONTROL;
|
|
lvds_reg = LVDS;
|
|
}
|
|
|
|
val = I915_READ(pp_reg);
|
|
if (!(val & PANEL_POWER_ON) ||
|
|
((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
|
|
locked = false;
|
|
|
|
if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
|
|
panel_pipe = PIPE_B;
|
|
|
|
WARN(panel_pipe == pipe && locked,
|
|
"panel assertion failure, pipe %c regs locked\n",
|
|
pipe_name(pipe));
|
|
}
|
|
|
|
static void assert_pipe(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, bool state)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
bool cur_state;
|
|
|
|
reg = PIPECONF(pipe);
|
|
val = I915_READ(reg);
|
|
cur_state = !!(val & PIPECONF_ENABLE);
|
|
WARN(cur_state != state,
|
|
"pipe %c assertion failure (expected %s, current %s)\n",
|
|
pipe_name(pipe), state_string(state), state_string(cur_state));
|
|
}
|
|
#define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
|
|
#define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
|
|
|
|
static void assert_plane_enabled(struct drm_i915_private *dev_priv,
|
|
enum plane plane)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
reg = DSPCNTR(plane);
|
|
val = I915_READ(reg);
|
|
WARN(!(val & DISPLAY_PLANE_ENABLE),
|
|
"plane %c assertion failure, should be active but is disabled\n",
|
|
plane_name(plane));
|
|
}
|
|
|
|
static void assert_planes_disabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg, i;
|
|
u32 val;
|
|
int cur_pipe;
|
|
|
|
/* Planes are fixed to pipes on ILK+ */
|
|
if (HAS_PCH_SPLIT(dev_priv->dev))
|
|
return;
|
|
|
|
/* Need to check both planes against the pipe */
|
|
for (i = 0; i < 2; i++) {
|
|
reg = DSPCNTR(i);
|
|
val = I915_READ(reg);
|
|
cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
|
|
DISPPLANE_SEL_PIPE_SHIFT;
|
|
WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
|
|
"plane %c assertion failure, should be off on pipe %c but is still active\n",
|
|
plane_name(i), pipe_name(pipe));
|
|
}
|
|
}
|
|
|
|
static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
bool enabled;
|
|
|
|
val = I915_READ(PCH_DREF_CONTROL);
|
|
enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
|
|
DREF_SUPERSPREAD_SOURCE_MASK));
|
|
WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
|
|
}
|
|
|
|
static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
bool enabled;
|
|
|
|
reg = TRANSCONF(pipe);
|
|
val = I915_READ(reg);
|
|
enabled = !!(val & TRANS_ENABLE);
|
|
WARN(enabled,
|
|
"transcoder assertion failed, should be off on pipe %c but is still active\n",
|
|
pipe_name(pipe));
|
|
}
|
|
|
|
static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, int reg)
|
|
{
|
|
u32 val = I915_READ(reg);
|
|
WARN(DP_PIPE_ENABLED(val, pipe),
|
|
"PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
|
|
reg, pipe_name(pipe));
|
|
}
|
|
|
|
static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, int reg)
|
|
{
|
|
u32 val = I915_READ(reg);
|
|
WARN(HDMI_PIPE_ENABLED(val, pipe),
|
|
"PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
|
|
reg, pipe_name(pipe));
|
|
}
|
|
|
|
static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B);
|
|
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C);
|
|
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D);
|
|
|
|
reg = PCH_ADPA;
|
|
val = I915_READ(reg);
|
|
WARN(ADPA_PIPE_ENABLED(val, pipe),
|
|
"PCH VGA enabled on transcoder %c, should be disabled\n",
|
|
pipe_name(pipe));
|
|
|
|
reg = PCH_LVDS;
|
|
val = I915_READ(reg);
|
|
WARN(LVDS_PIPE_ENABLED(val, pipe),
|
|
"PCH LVDS enabled on transcoder %c, should be disabled\n",
|
|
pipe_name(pipe));
|
|
|
|
assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
|
|
assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
|
|
assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
|
|
}
|
|
|
|
/**
|
|
* intel_enable_pll - enable a PLL
|
|
* @dev_priv: i915 private structure
|
|
* @pipe: pipe PLL to enable
|
|
*
|
|
* Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
|
|
* make sure the PLL reg is writable first though, since the panel write
|
|
* protect mechanism may be enabled.
|
|
*
|
|
* Note! This is for pre-ILK only.
|
|
*/
|
|
static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* No really, not for ILK+ */
|
|
BUG_ON(dev_priv->info->gen >= 5);
|
|
|
|
/* PLL is protected by panel, make sure we can write it */
|
|
if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
|
|
assert_panel_unlocked(dev_priv, pipe);
|
|
|
|
reg = DPLL(pipe);
|
|
val = I915_READ(reg);
|
|
val |= DPLL_VCO_ENABLE;
|
|
|
|
/* We do this three times for luck */
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
udelay(150); /* wait for warmup */
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
udelay(150); /* wait for warmup */
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
udelay(150); /* wait for warmup */
|
|
}
|
|
|
|
/**
|
|
* intel_disable_pll - disable a PLL
|
|
* @dev_priv: i915 private structure
|
|
* @pipe: pipe PLL to disable
|
|
*
|
|
* Disable the PLL for @pipe, making sure the pipe is off first.
|
|
*
|
|
* Note! This is for pre-ILK only.
|
|
*/
|
|
static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* Don't disable pipe A or pipe A PLLs if needed */
|
|
if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
|
|
return;
|
|
|
|
/* Make sure the pipe isn't still relying on us */
|
|
assert_pipe_disabled(dev_priv, pipe);
|
|
|
|
reg = DPLL(pipe);
|
|
val = I915_READ(reg);
|
|
val &= ~DPLL_VCO_ENABLE;
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
}
|
|
|
|
/**
|
|
* intel_enable_pch_pll - enable PCH PLL
|
|
* @dev_priv: i915 private structure
|
|
* @pipe: pipe PLL to enable
|
|
*
|
|
* The PCH PLL needs to be enabled before the PCH transcoder, since it
|
|
* drives the transcoder clock.
|
|
*/
|
|
static void intel_enable_pch_pll(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* PCH only available on ILK+ */
|
|
BUG_ON(dev_priv->info->gen < 5);
|
|
|
|
/* PCH refclock must be enabled first */
|
|
assert_pch_refclk_enabled(dev_priv);
|
|
|
|
reg = PCH_DPLL(pipe);
|
|
val = I915_READ(reg);
|
|
val |= DPLL_VCO_ENABLE;
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
udelay(200);
|
|
}
|
|
|
|
static void intel_disable_pch_pll(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* PCH only available on ILK+ */
|
|
BUG_ON(dev_priv->info->gen < 5);
|
|
|
|
/* Make sure transcoder isn't still depending on us */
|
|
assert_transcoder_disabled(dev_priv, pipe);
|
|
|
|
reg = PCH_DPLL(pipe);
|
|
val = I915_READ(reg);
|
|
val &= ~DPLL_VCO_ENABLE;
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
udelay(200);
|
|
}
|
|
|
|
static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* PCH only available on ILK+ */
|
|
BUG_ON(dev_priv->info->gen < 5);
|
|
|
|
/* Make sure PCH DPLL is enabled */
|
|
assert_pch_pll_enabled(dev_priv, pipe);
|
|
|
|
/* FDI must be feeding us bits for PCH ports */
|
|
assert_fdi_tx_enabled(dev_priv, pipe);
|
|
assert_fdi_rx_enabled(dev_priv, pipe);
|
|
|
|
reg = TRANSCONF(pipe);
|
|
val = I915_READ(reg);
|
|
/*
|
|
* make the BPC in transcoder be consistent with
|
|
* that in pipeconf reg.
|
|
*/
|
|
val &= ~PIPE_BPC_MASK;
|
|
val |= I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK;
|
|
I915_WRITE(reg, val | TRANS_ENABLE);
|
|
if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
|
|
DRM_ERROR("failed to enable transcoder %d\n", pipe);
|
|
}
|
|
|
|
static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* FDI relies on the transcoder */
|
|
assert_fdi_tx_disabled(dev_priv, pipe);
|
|
assert_fdi_rx_disabled(dev_priv, pipe);
|
|
|
|
/* Ports must be off as well */
|
|
assert_pch_ports_disabled(dev_priv, pipe);
|
|
|
|
reg = TRANSCONF(pipe);
|
|
val = I915_READ(reg);
|
|
val &= ~TRANS_ENABLE;
|
|
I915_WRITE(reg, val);
|
|
/* wait for PCH transcoder off, transcoder state */
|
|
if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
|
|
DRM_ERROR("failed to disable transcoder\n");
|
|
}
|
|
|
|
/**
|
|
* intel_enable_pipe - enable a pipe, asserting requirements
|
|
* @dev_priv: i915 private structure
|
|
* @pipe: pipe to enable
|
|
* @pch_port: on ILK+, is this pipe driving a PCH port or not
|
|
*
|
|
* Enable @pipe, making sure that various hardware specific requirements
|
|
* are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
|
|
*
|
|
* @pipe should be %PIPE_A or %PIPE_B.
|
|
*
|
|
* Will wait until the pipe is actually running (i.e. first vblank) before
|
|
* returning.
|
|
*/
|
|
static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
|
|
bool pch_port)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/*
|
|
* A pipe without a PLL won't actually be able to drive bits from
|
|
* a plane. On ILK+ the pipe PLLs are integrated, so we don't
|
|
* need the check.
|
|
*/
|
|
if (!HAS_PCH_SPLIT(dev_priv->dev))
|
|
assert_pll_enabled(dev_priv, pipe);
|
|
else {
|
|
if (pch_port) {
|
|
/* if driving the PCH, we need FDI enabled */
|
|
assert_fdi_rx_pll_enabled(dev_priv, pipe);
|
|
assert_fdi_tx_pll_enabled(dev_priv, pipe);
|
|
}
|
|
/* FIXME: assert CPU port conditions for SNB+ */
|
|
}
|
|
|
|
reg = PIPECONF(pipe);
|
|
val = I915_READ(reg);
|
|
if (val & PIPECONF_ENABLE)
|
|
return;
|
|
|
|
I915_WRITE(reg, val | PIPECONF_ENABLE);
|
|
intel_wait_for_vblank(dev_priv->dev, pipe);
|
|
}
|
|
|
|
/**
|
|
* intel_disable_pipe - disable a pipe, asserting requirements
|
|
* @dev_priv: i915 private structure
|
|
* @pipe: pipe to disable
|
|
*
|
|
* Disable @pipe, making sure that various hardware specific requirements
|
|
* are met, if applicable, e.g. plane disabled, panel fitter off, etc.
|
|
*
|
|
* @pipe should be %PIPE_A or %PIPE_B.
|
|
*
|
|
* Will wait until the pipe has shut down before returning.
|
|
*/
|
|
static void intel_disable_pipe(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/*
|
|
* Make sure planes won't keep trying to pump pixels to us,
|
|
* or we might hang the display.
|
|
*/
|
|
assert_planes_disabled(dev_priv, pipe);
|
|
|
|
/* Don't disable pipe A or pipe A PLLs if needed */
|
|
if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
|
|
return;
|
|
|
|
reg = PIPECONF(pipe);
|
|
val = I915_READ(reg);
|
|
if ((val & PIPECONF_ENABLE) == 0)
|
|
return;
|
|
|
|
I915_WRITE(reg, val & ~PIPECONF_ENABLE);
|
|
intel_wait_for_pipe_off(dev_priv->dev, pipe);
|
|
}
|
|
|
|
/**
|
|
* intel_enable_plane - enable a display plane on a given pipe
|
|
* @dev_priv: i915 private structure
|
|
* @plane: plane to enable
|
|
* @pipe: pipe being fed
|
|
*
|
|
* Enable @plane on @pipe, making sure that @pipe is running first.
|
|
*/
|
|
static void intel_enable_plane(struct drm_i915_private *dev_priv,
|
|
enum plane plane, enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
/* If the pipe isn't enabled, we can't pump pixels and may hang */
|
|
assert_pipe_enabled(dev_priv, pipe);
|
|
|
|
reg = DSPCNTR(plane);
|
|
val = I915_READ(reg);
|
|
if (val & DISPLAY_PLANE_ENABLE)
|
|
return;
|
|
|
|
I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
|
|
intel_wait_for_vblank(dev_priv->dev, pipe);
|
|
}
|
|
|
|
/*
|
|
* Plane regs are double buffered, going from enabled->disabled needs a
|
|
* trigger in order to latch. The display address reg provides this.
|
|
*/
|
|
static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
|
|
enum plane plane)
|
|
{
|
|
u32 reg = DSPADDR(plane);
|
|
I915_WRITE(reg, I915_READ(reg));
|
|
}
|
|
|
|
/**
|
|
* intel_disable_plane - disable a display plane
|
|
* @dev_priv: i915 private structure
|
|
* @plane: plane to disable
|
|
* @pipe: pipe consuming the data
|
|
*
|
|
* Disable @plane; should be an independent operation.
|
|
*/
|
|
static void intel_disable_plane(struct drm_i915_private *dev_priv,
|
|
enum plane plane, enum pipe pipe)
|
|
{
|
|
int reg;
|
|
u32 val;
|
|
|
|
reg = DSPCNTR(plane);
|
|
val = I915_READ(reg);
|
|
if ((val & DISPLAY_PLANE_ENABLE) == 0)
|
|
return;
|
|
|
|
I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
|
|
intel_flush_display_plane(dev_priv, plane);
|
|
intel_wait_for_vblank(dev_priv->dev, pipe);
|
|
}
|
|
|
|
static void disable_pch_dp(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, int reg)
|
|
{
|
|
u32 val = I915_READ(reg);
|
|
if (DP_PIPE_ENABLED(val, pipe))
|
|
I915_WRITE(reg, val & ~DP_PORT_EN);
|
|
}
|
|
|
|
static void disable_pch_hdmi(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, int reg)
|
|
{
|
|
u32 val = I915_READ(reg);
|
|
if (HDMI_PIPE_ENABLED(val, pipe))
|
|
I915_WRITE(reg, val & ~PORT_ENABLE);
|
|
}
|
|
|
|
/* Disable any ports connected to this transcoder */
|
|
static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
u32 reg, val;
|
|
|
|
val = I915_READ(PCH_PP_CONTROL);
|
|
I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS);
|
|
|
|
disable_pch_dp(dev_priv, pipe, PCH_DP_B);
|
|
disable_pch_dp(dev_priv, pipe, PCH_DP_C);
|
|
disable_pch_dp(dev_priv, pipe, PCH_DP_D);
|
|
|
|
reg = PCH_ADPA;
|
|
val = I915_READ(reg);
|
|
if (ADPA_PIPE_ENABLED(val, pipe))
|
|
I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
|
|
|
|
reg = PCH_LVDS;
|
|
val = I915_READ(reg);
|
|
if (LVDS_PIPE_ENABLED(val, pipe)) {
|
|
I915_WRITE(reg, val & ~LVDS_PORT_EN);
|
|
POSTING_READ(reg);
|
|
udelay(100);
|
|
}
|
|
|
|
disable_pch_hdmi(dev_priv, pipe, HDMIB);
|
|
disable_pch_hdmi(dev_priv, pipe, HDMIC);
|
|
disable_pch_hdmi(dev_priv, pipe, HDMID);
|
|
}
|
|
|
|
static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_framebuffer *fb = crtc->fb;
|
|
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
|
|
struct drm_i915_gem_object *obj = intel_fb->obj;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int plane, i;
|
|
u32 fbc_ctl, fbc_ctl2;
|
|
|
|
if (fb->pitch == dev_priv->cfb_pitch &&
|
|
obj->fence_reg == dev_priv->cfb_fence &&
|
|
intel_crtc->plane == dev_priv->cfb_plane &&
|
|
I915_READ(FBC_CONTROL) & FBC_CTL_EN)
|
|
return;
|
|
|
|
i8xx_disable_fbc(dev);
|
|
|
|
dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
|
|
|
|
if (fb->pitch < dev_priv->cfb_pitch)
|
|
dev_priv->cfb_pitch = fb->pitch;
|
|
|
|
/* FBC_CTL wants 64B units */
|
|
dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
|
|
dev_priv->cfb_fence = obj->fence_reg;
|
|
dev_priv->cfb_plane = intel_crtc->plane;
|
|
plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
|
|
|
|
/* Clear old tags */
|
|
for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
|
|
I915_WRITE(FBC_TAG + (i * 4), 0);
|
|
|
|
/* Set it up... */
|
|
fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane;
|
|
if (obj->tiling_mode != I915_TILING_NONE)
|
|
fbc_ctl2 |= FBC_CTL_CPU_FENCE;
|
|
I915_WRITE(FBC_CONTROL2, fbc_ctl2);
|
|
I915_WRITE(FBC_FENCE_OFF, crtc->y);
|
|
|
|
/* enable it... */
|
|
fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
|
|
if (IS_I945GM(dev))
|
|
fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
|
|
fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
|
|
fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
|
|
if (obj->tiling_mode != I915_TILING_NONE)
|
|
fbc_ctl |= dev_priv->cfb_fence;
|
|
I915_WRITE(FBC_CONTROL, fbc_ctl);
|
|
|
|
DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
|
|
dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane);
|
|
}
|
|
|
|
void i8xx_disable_fbc(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 fbc_ctl;
|
|
|
|
/* Disable compression */
|
|
fbc_ctl = I915_READ(FBC_CONTROL);
|
|
if ((fbc_ctl & FBC_CTL_EN) == 0)
|
|
return;
|
|
|
|
fbc_ctl &= ~FBC_CTL_EN;
|
|
I915_WRITE(FBC_CONTROL, fbc_ctl);
|
|
|
|
/* Wait for compressing bit to clear */
|
|
if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) {
|
|
DRM_DEBUG_KMS("FBC idle timed out\n");
|
|
return;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("disabled FBC\n");
|
|
}
|
|
|
|
static bool i8xx_fbc_enabled(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
|
|
}
|
|
|
|
static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_framebuffer *fb = crtc->fb;
|
|
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
|
|
struct drm_i915_gem_object *obj = intel_fb->obj;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
|
|
unsigned long stall_watermark = 200;
|
|
u32 dpfc_ctl;
|
|
|
|
dpfc_ctl = I915_READ(DPFC_CONTROL);
|
|
if (dpfc_ctl & DPFC_CTL_EN) {
|
|
if (dev_priv->cfb_pitch == dev_priv->cfb_pitch / 64 - 1 &&
|
|
dev_priv->cfb_fence == obj->fence_reg &&
|
|
dev_priv->cfb_plane == intel_crtc->plane &&
|
|
dev_priv->cfb_y == crtc->y)
|
|
return;
|
|
|
|
I915_WRITE(DPFC_CONTROL, dpfc_ctl & ~DPFC_CTL_EN);
|
|
intel_wait_for_vblank(dev, intel_crtc->pipe);
|
|
}
|
|
|
|
dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
|
|
dev_priv->cfb_fence = obj->fence_reg;
|
|
dev_priv->cfb_plane = intel_crtc->plane;
|
|
dev_priv->cfb_y = crtc->y;
|
|
|
|
dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
|
|
if (obj->tiling_mode != I915_TILING_NONE) {
|
|
dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
|
|
I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
|
|
} else {
|
|
I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
|
|
}
|
|
|
|
I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
|
|
(stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
|
|
(interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
|
|
I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
|
|
|
|
/* enable it... */
|
|
I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
|
|
|
|
DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
|
|
}
|
|
|
|
void g4x_disable_fbc(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 dpfc_ctl;
|
|
|
|
/* Disable compression */
|
|
dpfc_ctl = I915_READ(DPFC_CONTROL);
|
|
if (dpfc_ctl & DPFC_CTL_EN) {
|
|
dpfc_ctl &= ~DPFC_CTL_EN;
|
|
I915_WRITE(DPFC_CONTROL, dpfc_ctl);
|
|
|
|
DRM_DEBUG_KMS("disabled FBC\n");
|
|
}
|
|
}
|
|
|
|
static bool g4x_fbc_enabled(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
|
|
}
|
|
|
|
static void sandybridge_blit_fbc_update(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 blt_ecoskpd;
|
|
|
|
/* Make sure blitter notifies FBC of writes */
|
|
gen6_gt_force_wake_get(dev_priv);
|
|
blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
|
|
blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
|
|
GEN6_BLITTER_LOCK_SHIFT;
|
|
I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
|
|
blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
|
|
I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
|
|
blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
|
|
GEN6_BLITTER_LOCK_SHIFT);
|
|
I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
|
|
POSTING_READ(GEN6_BLITTER_ECOSKPD);
|
|
gen6_gt_force_wake_put(dev_priv);
|
|
}
|
|
|
|
static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_framebuffer *fb = crtc->fb;
|
|
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
|
|
struct drm_i915_gem_object *obj = intel_fb->obj;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
|
|
unsigned long stall_watermark = 200;
|
|
u32 dpfc_ctl;
|
|
|
|
dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
|
|
if (dpfc_ctl & DPFC_CTL_EN) {
|
|
if (dev_priv->cfb_pitch == dev_priv->cfb_pitch / 64 - 1 &&
|
|
dev_priv->cfb_fence == obj->fence_reg &&
|
|
dev_priv->cfb_plane == intel_crtc->plane &&
|
|
dev_priv->cfb_offset == obj->gtt_offset &&
|
|
dev_priv->cfb_y == crtc->y)
|
|
return;
|
|
|
|
I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl & ~DPFC_CTL_EN);
|
|
intel_wait_for_vblank(dev, intel_crtc->pipe);
|
|
}
|
|
|
|
dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
|
|
dev_priv->cfb_fence = obj->fence_reg;
|
|
dev_priv->cfb_plane = intel_crtc->plane;
|
|
dev_priv->cfb_offset = obj->gtt_offset;
|
|
dev_priv->cfb_y = crtc->y;
|
|
|
|
dpfc_ctl &= DPFC_RESERVED;
|
|
dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X);
|
|
if (obj->tiling_mode != I915_TILING_NONE) {
|
|
dpfc_ctl |= (DPFC_CTL_FENCE_EN | dev_priv->cfb_fence);
|
|
I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY);
|
|
} else {
|
|
I915_WRITE(ILK_DPFC_CHICKEN, ~DPFC_HT_MODIFY);
|
|
}
|
|
|
|
I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
|
|
(stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
|
|
(interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
|
|
I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y);
|
|
I915_WRITE(ILK_FBC_RT_BASE, obj->gtt_offset | ILK_FBC_RT_VALID);
|
|
/* enable it... */
|
|
I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
|
|
|
|
if (IS_GEN6(dev)) {
|
|
I915_WRITE(SNB_DPFC_CTL_SA,
|
|
SNB_CPU_FENCE_ENABLE | dev_priv->cfb_fence);
|
|
I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
|
|
sandybridge_blit_fbc_update(dev);
|
|
}
|
|
|
|
DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
|
|
}
|
|
|
|
void ironlake_disable_fbc(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 dpfc_ctl;
|
|
|
|
/* Disable compression */
|
|
dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
|
|
if (dpfc_ctl & DPFC_CTL_EN) {
|
|
dpfc_ctl &= ~DPFC_CTL_EN;
|
|
I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
|
|
|
|
DRM_DEBUG_KMS("disabled FBC\n");
|
|
}
|
|
}
|
|
|
|
static bool ironlake_fbc_enabled(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN;
|
|
}
|
|
|
|
bool intel_fbc_enabled(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (!dev_priv->display.fbc_enabled)
|
|
return false;
|
|
|
|
return dev_priv->display.fbc_enabled(dev);
|
|
}
|
|
|
|
void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
|
|
{
|
|
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
|
|
|
|
if (!dev_priv->display.enable_fbc)
|
|
return;
|
|
|
|
dev_priv->display.enable_fbc(crtc, interval);
|
|
}
|
|
|
|
void intel_disable_fbc(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (!dev_priv->display.disable_fbc)
|
|
return;
|
|
|
|
dev_priv->display.disable_fbc(dev);
|
|
}
|
|
|
|
/**
|
|
* intel_update_fbc - enable/disable FBC as needed
|
|
* @dev: the drm_device
|
|
*
|
|
* Set up the framebuffer compression hardware at mode set time. We
|
|
* enable it if possible:
|
|
* - plane A only (on pre-965)
|
|
* - no pixel mulitply/line duplication
|
|
* - no alpha buffer discard
|
|
* - no dual wide
|
|
* - framebuffer <= 2048 in width, 1536 in height
|
|
*
|
|
* We can't assume that any compression will take place (worst case),
|
|
* so the compressed buffer has to be the same size as the uncompressed
|
|
* one. It also must reside (along with the line length buffer) in
|
|
* stolen memory.
|
|
*
|
|
* We need to enable/disable FBC on a global basis.
|
|
*/
|
|
static void intel_update_fbc(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc = NULL, *tmp_crtc;
|
|
struct intel_crtc *intel_crtc;
|
|
struct drm_framebuffer *fb;
|
|
struct intel_framebuffer *intel_fb;
|
|
struct drm_i915_gem_object *obj;
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
if (!i915_powersave)
|
|
return;
|
|
|
|
if (!I915_HAS_FBC(dev))
|
|
return;
|
|
|
|
/*
|
|
* If FBC is already on, we just have to verify that we can
|
|
* keep it that way...
|
|
* Need to disable if:
|
|
* - more than one pipe is active
|
|
* - changing FBC params (stride, fence, mode)
|
|
* - new fb is too large to fit in compressed buffer
|
|
* - going to an unsupported config (interlace, pixel multiply, etc.)
|
|
*/
|
|
list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) {
|
|
if (tmp_crtc->enabled && tmp_crtc->fb) {
|
|
if (crtc) {
|
|
DRM_DEBUG_KMS("more than one pipe active, disabling compression\n");
|
|
dev_priv->no_fbc_reason = FBC_MULTIPLE_PIPES;
|
|
goto out_disable;
|
|
}
|
|
crtc = tmp_crtc;
|
|
}
|
|
}
|
|
|
|
if (!crtc || crtc->fb == NULL) {
|
|
DRM_DEBUG_KMS("no output, disabling\n");
|
|
dev_priv->no_fbc_reason = FBC_NO_OUTPUT;
|
|
goto out_disable;
|
|
}
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
fb = crtc->fb;
|
|
intel_fb = to_intel_framebuffer(fb);
|
|
obj = intel_fb->obj;
|
|
|
|
if (!i915_enable_fbc) {
|
|
DRM_DEBUG_KMS("fbc disabled per module param (default off)\n");
|
|
dev_priv->no_fbc_reason = FBC_MODULE_PARAM;
|
|
goto out_disable;
|
|
}
|
|
if (intel_fb->obj->base.size > dev_priv->cfb_size) {
|
|
DRM_DEBUG_KMS("framebuffer too large, disabling "
|
|
"compression\n");
|
|
dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
|
|
goto out_disable;
|
|
}
|
|
if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
|
|
(crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
|
|
DRM_DEBUG_KMS("mode incompatible with compression, "
|
|
"disabling\n");
|
|
dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
|
|
goto out_disable;
|
|
}
|
|
if ((crtc->mode.hdisplay > 2048) ||
|
|
(crtc->mode.vdisplay > 1536)) {
|
|
DRM_DEBUG_KMS("mode too large for compression, disabling\n");
|
|
dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
|
|
goto out_disable;
|
|
}
|
|
if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
|
|
DRM_DEBUG_KMS("plane not 0, disabling compression\n");
|
|
dev_priv->no_fbc_reason = FBC_BAD_PLANE;
|
|
goto out_disable;
|
|
}
|
|
if (obj->tiling_mode != I915_TILING_X) {
|
|
DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n");
|
|
dev_priv->no_fbc_reason = FBC_NOT_TILED;
|
|
goto out_disable;
|
|
}
|
|
|
|
/* If the kernel debugger is active, always disable compression */
|
|
if (in_dbg_master())
|
|
goto out_disable;
|
|
|
|
intel_enable_fbc(crtc, 500);
|
|
return;
|
|
|
|
out_disable:
|
|
/* Multiple disables should be harmless */
|
|
if (intel_fbc_enabled(dev)) {
|
|
DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
|
|
intel_disable_fbc(dev);
|
|
}
|
|
}
|
|
|
|
int
|
|
intel_pin_and_fence_fb_obj(struct drm_device *dev,
|
|
struct drm_i915_gem_object *obj,
|
|
struct intel_ring_buffer *pipelined)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 alignment;
|
|
int ret;
|
|
|
|
switch (obj->tiling_mode) {
|
|
case I915_TILING_NONE:
|
|
if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
|
|
alignment = 128 * 1024;
|
|
else if (INTEL_INFO(dev)->gen >= 4)
|
|
alignment = 4 * 1024;
|
|
else
|
|
alignment = 64 * 1024;
|
|
break;
|
|
case I915_TILING_X:
|
|
/* pin() will align the object as required by fence */
|
|
alignment = 0;
|
|
break;
|
|
case I915_TILING_Y:
|
|
/* FIXME: Is this true? */
|
|
DRM_ERROR("Y tiled not allowed for scan out buffers\n");
|
|
return -EINVAL;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
dev_priv->mm.interruptible = false;
|
|
ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
|
|
if (ret)
|
|
goto err_interruptible;
|
|
|
|
/* Install a fence for tiled scan-out. Pre-i965 always needs a
|
|
* fence, whereas 965+ only requires a fence if using
|
|
* framebuffer compression. For simplicity, we always install
|
|
* a fence as the cost is not that onerous.
|
|
*/
|
|
if (obj->tiling_mode != I915_TILING_NONE) {
|
|
ret = i915_gem_object_get_fence(obj, pipelined);
|
|
if (ret)
|
|
goto err_unpin;
|
|
}
|
|
|
|
dev_priv->mm.interruptible = true;
|
|
return 0;
|
|
|
|
err_unpin:
|
|
i915_gem_object_unpin(obj);
|
|
err_interruptible:
|
|
dev_priv->mm.interruptible = true;
|
|
return ret;
|
|
}
|
|
|
|
/* Assume fb object is pinned & idle & fenced and just update base pointers */
|
|
static int
|
|
intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
|
|
int x, int y, enum mode_set_atomic state)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
struct intel_framebuffer *intel_fb;
|
|
struct drm_i915_gem_object *obj;
|
|
int plane = intel_crtc->plane;
|
|
unsigned long Start, Offset;
|
|
u32 dspcntr;
|
|
u32 reg;
|
|
|
|
switch (plane) {
|
|
case 0:
|
|
case 1:
|
|
break;
|
|
default:
|
|
DRM_ERROR("Can't update plane %d in SAREA\n", plane);
|
|
return -EINVAL;
|
|
}
|
|
|
|
intel_fb = to_intel_framebuffer(fb);
|
|
obj = intel_fb->obj;
|
|
|
|
reg = DSPCNTR(plane);
|
|
dspcntr = I915_READ(reg);
|
|
/* Mask out pixel format bits in case we change it */
|
|
dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
|
|
switch (fb->bits_per_pixel) {
|
|
case 8:
|
|
dspcntr |= DISPPLANE_8BPP;
|
|
break;
|
|
case 16:
|
|
if (fb->depth == 15)
|
|
dspcntr |= DISPPLANE_15_16BPP;
|
|
else
|
|
dspcntr |= DISPPLANE_16BPP;
|
|
break;
|
|
case 24:
|
|
case 32:
|
|
dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
|
|
break;
|
|
default:
|
|
DRM_ERROR("Unknown color depth\n");
|
|
return -EINVAL;
|
|
}
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
if (obj->tiling_mode != I915_TILING_NONE)
|
|
dspcntr |= DISPPLANE_TILED;
|
|
else
|
|
dspcntr &= ~DISPPLANE_TILED;
|
|
}
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
/* must disable */
|
|
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
|
|
|
|
I915_WRITE(reg, dspcntr);
|
|
|
|
Start = obj->gtt_offset;
|
|
Offset = y * fb->pitch + x * (fb->bits_per_pixel / 8);
|
|
|
|
DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
|
|
Start, Offset, x, y, fb->pitch);
|
|
I915_WRITE(DSPSTRIDE(plane), fb->pitch);
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
I915_WRITE(DSPSURF(plane), Start);
|
|
I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
|
|
I915_WRITE(DSPADDR(plane), Offset);
|
|
} else
|
|
I915_WRITE(DSPADDR(plane), Start + Offset);
|
|
POSTING_READ(reg);
|
|
|
|
intel_update_fbc(dev);
|
|
intel_increase_pllclock(crtc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
|
|
struct drm_framebuffer *old_fb)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_master_private *master_priv;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int ret;
|
|
|
|
/* no fb bound */
|
|
if (!crtc->fb) {
|
|
DRM_DEBUG_KMS("No FB bound\n");
|
|
return 0;
|
|
}
|
|
|
|
switch (intel_crtc->plane) {
|
|
case 0:
|
|
case 1:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = intel_pin_and_fence_fb_obj(dev,
|
|
to_intel_framebuffer(crtc->fb)->obj,
|
|
NULL);
|
|
if (ret != 0) {
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
}
|
|
|
|
if (old_fb) {
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
|
|
|
|
wait_event(dev_priv->pending_flip_queue,
|
|
atomic_read(&dev_priv->mm.wedged) ||
|
|
atomic_read(&obj->pending_flip) == 0);
|
|
|
|
/* Big Hammer, we also need to ensure that any pending
|
|
* MI_WAIT_FOR_EVENT inside a user batch buffer on the
|
|
* current scanout is retired before unpinning the old
|
|
* framebuffer.
|
|
*
|
|
* This should only fail upon a hung GPU, in which case we
|
|
* can safely continue.
|
|
*/
|
|
ret = i915_gem_object_finish_gpu(obj);
|
|
(void) ret;
|
|
}
|
|
|
|
ret = intel_pipe_set_base_atomic(crtc, crtc->fb, x, y,
|
|
LEAVE_ATOMIC_MODE_SET);
|
|
if (ret) {
|
|
i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
}
|
|
|
|
if (old_fb) {
|
|
intel_wait_for_vblank(dev, intel_crtc->pipe);
|
|
i915_gem_object_unpin(to_intel_framebuffer(old_fb)->obj);
|
|
}
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
if (!dev->primary->master)
|
|
return 0;
|
|
|
|
master_priv = dev->primary->master->driver_priv;
|
|
if (!master_priv->sarea_priv)
|
|
return 0;
|
|
|
|
if (intel_crtc->pipe) {
|
|
master_priv->sarea_priv->pipeB_x = x;
|
|
master_priv->sarea_priv->pipeB_y = y;
|
|
} else {
|
|
master_priv->sarea_priv->pipeA_x = x;
|
|
master_priv->sarea_priv->pipeA_y = y;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 dpa_ctl;
|
|
|
|
DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
|
|
dpa_ctl = I915_READ(DP_A);
|
|
dpa_ctl &= ~DP_PLL_FREQ_MASK;
|
|
|
|
if (clock < 200000) {
|
|
u32 temp;
|
|
dpa_ctl |= DP_PLL_FREQ_160MHZ;
|
|
/* workaround for 160Mhz:
|
|
1) program 0x4600c bits 15:0 = 0x8124
|
|
2) program 0x46010 bit 0 = 1
|
|
3) program 0x46034 bit 24 = 1
|
|
4) program 0x64000 bit 14 = 1
|
|
*/
|
|
temp = I915_READ(0x4600c);
|
|
temp &= 0xffff0000;
|
|
I915_WRITE(0x4600c, temp | 0x8124);
|
|
|
|
temp = I915_READ(0x46010);
|
|
I915_WRITE(0x46010, temp | 1);
|
|
|
|
temp = I915_READ(0x46034);
|
|
I915_WRITE(0x46034, temp | (1 << 24));
|
|
} else {
|
|
dpa_ctl |= DP_PLL_FREQ_270MHZ;
|
|
}
|
|
I915_WRITE(DP_A, dpa_ctl);
|
|
|
|
POSTING_READ(DP_A);
|
|
udelay(500);
|
|
}
|
|
|
|
static void intel_fdi_normal_train(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 reg, temp;
|
|
|
|
/* enable normal train */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
if (IS_IVYBRIDGE(dev)) {
|
|
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
|
|
temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
|
|
} else {
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
|
|
}
|
|
I915_WRITE(reg, temp);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
if (HAS_PCH_CPT(dev)) {
|
|
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
|
|
temp |= FDI_LINK_TRAIN_NORMAL_CPT;
|
|
} else {
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_NONE;
|
|
}
|
|
I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
|
|
|
|
/* wait one idle pattern time */
|
|
POSTING_READ(reg);
|
|
udelay(1000);
|
|
|
|
/* IVB wants error correction enabled */
|
|
if (IS_IVYBRIDGE(dev))
|
|
I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
|
|
FDI_FE_ERRC_ENABLE);
|
|
}
|
|
|
|
/* The FDI link training functions for ILK/Ibexpeak. */
|
|
static void ironlake_fdi_link_train(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
u32 reg, temp, tries;
|
|
|
|
/* FDI needs bits from pipe & plane first */
|
|
assert_pipe_enabled(dev_priv, pipe);
|
|
assert_plane_enabled(dev_priv, plane);
|
|
|
|
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
|
|
for train result */
|
|
reg = FDI_RX_IMR(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_RX_SYMBOL_LOCK;
|
|
temp &= ~FDI_RX_BIT_LOCK;
|
|
I915_WRITE(reg, temp);
|
|
I915_READ(reg);
|
|
udelay(150);
|
|
|
|
/* enable CPU FDI TX and PCH FDI RX */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~(7 << 19);
|
|
temp |= (intel_crtc->fdi_lanes - 1) << 19;
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1;
|
|
I915_WRITE(reg, temp | FDI_TX_ENABLE);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1;
|
|
I915_WRITE(reg, temp | FDI_RX_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
/* Ironlake workaround, enable clock pointer after FDI enable*/
|
|
if (HAS_PCH_IBX(dev)) {
|
|
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
|
|
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
|
|
FDI_RX_PHASE_SYNC_POINTER_EN);
|
|
}
|
|
|
|
reg = FDI_RX_IIR(pipe);
|
|
for (tries = 0; tries < 5; tries++) {
|
|
temp = I915_READ(reg);
|
|
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
|
|
|
|
if ((temp & FDI_RX_BIT_LOCK)) {
|
|
DRM_DEBUG_KMS("FDI train 1 done.\n");
|
|
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
|
|
break;
|
|
}
|
|
}
|
|
if (tries == 5)
|
|
DRM_ERROR("FDI train 1 fail!\n");
|
|
|
|
/* Train 2 */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2;
|
|
I915_WRITE(reg, temp);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2;
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
reg = FDI_RX_IIR(pipe);
|
|
for (tries = 0; tries < 5; tries++) {
|
|
temp = I915_READ(reg);
|
|
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
|
|
|
|
if (temp & FDI_RX_SYMBOL_LOCK) {
|
|
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
|
|
DRM_DEBUG_KMS("FDI train 2 done.\n");
|
|
break;
|
|
}
|
|
}
|
|
if (tries == 5)
|
|
DRM_ERROR("FDI train 2 fail!\n");
|
|
|
|
DRM_DEBUG_KMS("FDI train done\n");
|
|
|
|
}
|
|
|
|
static const int snb_b_fdi_train_param [] = {
|
|
FDI_LINK_TRAIN_400MV_0DB_SNB_B,
|
|
FDI_LINK_TRAIN_400MV_6DB_SNB_B,
|
|
FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
|
|
FDI_LINK_TRAIN_800MV_0DB_SNB_B,
|
|
};
|
|
|
|
/* The FDI link training functions for SNB/Cougarpoint. */
|
|
static void gen6_fdi_link_train(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 reg, temp, i;
|
|
|
|
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
|
|
for train result */
|
|
reg = FDI_RX_IMR(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_RX_SYMBOL_LOCK;
|
|
temp &= ~FDI_RX_BIT_LOCK;
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
/* enable CPU FDI TX and PCH FDI RX */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~(7 << 19);
|
|
temp |= (intel_crtc->fdi_lanes - 1) << 19;
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1;
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
/* SNB-B */
|
|
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
|
|
I915_WRITE(reg, temp | FDI_TX_ENABLE);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
if (HAS_PCH_CPT(dev)) {
|
|
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
|
|
} else {
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1;
|
|
}
|
|
I915_WRITE(reg, temp | FDI_RX_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
for (i = 0; i < 4; i++ ) {
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
temp |= snb_b_fdi_train_param[i];
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(500);
|
|
|
|
reg = FDI_RX_IIR(pipe);
|
|
temp = I915_READ(reg);
|
|
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
|
|
|
|
if (temp & FDI_RX_BIT_LOCK) {
|
|
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
|
|
DRM_DEBUG_KMS("FDI train 1 done.\n");
|
|
break;
|
|
}
|
|
}
|
|
if (i == 4)
|
|
DRM_ERROR("FDI train 1 fail!\n");
|
|
|
|
/* Train 2 */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2;
|
|
if (IS_GEN6(dev)) {
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
/* SNB-B */
|
|
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
|
|
}
|
|
I915_WRITE(reg, temp);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
if (HAS_PCH_CPT(dev)) {
|
|
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
|
|
} else {
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2;
|
|
}
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
for (i = 0; i < 4; i++ ) {
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
temp |= snb_b_fdi_train_param[i];
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(500);
|
|
|
|
reg = FDI_RX_IIR(pipe);
|
|
temp = I915_READ(reg);
|
|
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
|
|
|
|
if (temp & FDI_RX_SYMBOL_LOCK) {
|
|
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
|
|
DRM_DEBUG_KMS("FDI train 2 done.\n");
|
|
break;
|
|
}
|
|
}
|
|
if (i == 4)
|
|
DRM_ERROR("FDI train 2 fail!\n");
|
|
|
|
DRM_DEBUG_KMS("FDI train done.\n");
|
|
}
|
|
|
|
/* Manual link training for Ivy Bridge A0 parts */
|
|
static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 reg, temp, i;
|
|
|
|
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
|
|
for train result */
|
|
reg = FDI_RX_IMR(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_RX_SYMBOL_LOCK;
|
|
temp &= ~FDI_RX_BIT_LOCK;
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
/* enable CPU FDI TX and PCH FDI RX */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~(7 << 19);
|
|
temp |= (intel_crtc->fdi_lanes - 1) << 19;
|
|
temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
|
|
I915_WRITE(reg, temp | FDI_TX_ENABLE);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_AUTO;
|
|
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
|
|
I915_WRITE(reg, temp | FDI_RX_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
for (i = 0; i < 4; i++ ) {
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
temp |= snb_b_fdi_train_param[i];
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(500);
|
|
|
|
reg = FDI_RX_IIR(pipe);
|
|
temp = I915_READ(reg);
|
|
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
|
|
|
|
if (temp & FDI_RX_BIT_LOCK ||
|
|
(I915_READ(reg) & FDI_RX_BIT_LOCK)) {
|
|
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
|
|
DRM_DEBUG_KMS("FDI train 1 done.\n");
|
|
break;
|
|
}
|
|
}
|
|
if (i == 4)
|
|
DRM_ERROR("FDI train 1 fail!\n");
|
|
|
|
/* Train 2 */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
|
|
I915_WRITE(reg, temp);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
for (i = 0; i < 4; i++ ) {
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
|
|
temp |= snb_b_fdi_train_param[i];
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(500);
|
|
|
|
reg = FDI_RX_IIR(pipe);
|
|
temp = I915_READ(reg);
|
|
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
|
|
|
|
if (temp & FDI_RX_SYMBOL_LOCK) {
|
|
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
|
|
DRM_DEBUG_KMS("FDI train 2 done.\n");
|
|
break;
|
|
}
|
|
}
|
|
if (i == 4)
|
|
DRM_ERROR("FDI train 2 fail!\n");
|
|
|
|
DRM_DEBUG_KMS("FDI train done.\n");
|
|
}
|
|
|
|
static void ironlake_fdi_pll_enable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 reg, temp;
|
|
|
|
/* Write the TU size bits so error detection works */
|
|
I915_WRITE(FDI_RX_TUSIZE1(pipe),
|
|
I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
|
|
|
|
/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~((0x7 << 19) | (0x7 << 16));
|
|
temp |= (intel_crtc->fdi_lanes - 1) << 19;
|
|
temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
|
|
I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(200);
|
|
|
|
/* Switch from Rawclk to PCDclk */
|
|
temp = I915_READ(reg);
|
|
I915_WRITE(reg, temp | FDI_PCDCLK);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(200);
|
|
|
|
/* Enable CPU FDI TX PLL, always on for Ironlake */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
if ((temp & FDI_TX_PLL_ENABLE) == 0) {
|
|
I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(100);
|
|
}
|
|
}
|
|
|
|
static void ironlake_fdi_disable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 reg, temp;
|
|
|
|
/* disable CPU FDI tx and PCH FDI rx */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
|
|
POSTING_READ(reg);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~(0x7 << 16);
|
|
temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
|
|
I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(100);
|
|
|
|
/* Ironlake workaround, disable clock pointer after downing FDI */
|
|
if (HAS_PCH_IBX(dev)) {
|
|
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
|
|
I915_WRITE(FDI_RX_CHICKEN(pipe),
|
|
I915_READ(FDI_RX_CHICKEN(pipe) &
|
|
~FDI_RX_PHASE_SYNC_POINTER_EN));
|
|
}
|
|
|
|
/* still set train pattern 1 */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1;
|
|
I915_WRITE(reg, temp);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
if (HAS_PCH_CPT(dev)) {
|
|
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
|
|
} else {
|
|
temp &= ~FDI_LINK_TRAIN_NONE;
|
|
temp |= FDI_LINK_TRAIN_PATTERN_1;
|
|
}
|
|
/* BPC in FDI rx is consistent with that in PIPECONF */
|
|
temp &= ~(0x07 << 16);
|
|
temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
|
|
I915_WRITE(reg, temp);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(100);
|
|
}
|
|
|
|
/*
|
|
* When we disable a pipe, we need to clear any pending scanline wait events
|
|
* to avoid hanging the ring, which we assume we are waiting on.
|
|
*/
|
|
static void intel_clear_scanline_wait(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_ring_buffer *ring;
|
|
u32 tmp;
|
|
|
|
if (IS_GEN2(dev))
|
|
/* Can't break the hang on i8xx */
|
|
return;
|
|
|
|
ring = LP_RING(dev_priv);
|
|
tmp = I915_READ_CTL(ring);
|
|
if (tmp & RING_WAIT)
|
|
I915_WRITE_CTL(ring, tmp);
|
|
}
|
|
|
|
static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_i915_gem_object *obj;
|
|
struct drm_i915_private *dev_priv;
|
|
|
|
if (crtc->fb == NULL)
|
|
return;
|
|
|
|
obj = to_intel_framebuffer(crtc->fb)->obj;
|
|
dev_priv = crtc->dev->dev_private;
|
|
wait_event(dev_priv->pending_flip_queue,
|
|
atomic_read(&obj->pending_flip) == 0);
|
|
}
|
|
|
|
static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_mode_config *mode_config = &dev->mode_config;
|
|
struct intel_encoder *encoder;
|
|
|
|
/*
|
|
* If there's a non-PCH eDP on this crtc, it must be DP_A, and that
|
|
* must be driven by its own crtc; no sharing is possible.
|
|
*/
|
|
list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
|
|
if (encoder->base.crtc != crtc)
|
|
continue;
|
|
|
|
switch (encoder->type) {
|
|
case INTEL_OUTPUT_EDP:
|
|
if (!intel_encoder_is_pch_edp(&encoder->base))
|
|
return false;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Enable PCH resources required for PCH ports:
|
|
* - PCH PLLs
|
|
* - FDI training & RX/TX
|
|
* - update transcoder timings
|
|
* - DP transcoding bits
|
|
* - transcoder
|
|
*/
|
|
static void ironlake_pch_enable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 reg, temp;
|
|
|
|
/* For PCH output, training FDI link */
|
|
dev_priv->display.fdi_link_train(crtc);
|
|
|
|
intel_enable_pch_pll(dev_priv, pipe);
|
|
|
|
if (HAS_PCH_CPT(dev)) {
|
|
/* Be sure PCH DPLL SEL is set */
|
|
temp = I915_READ(PCH_DPLL_SEL);
|
|
if (pipe == 0 && (temp & TRANSA_DPLL_ENABLE) == 0)
|
|
temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
|
|
else if (pipe == 1 && (temp & TRANSB_DPLL_ENABLE) == 0)
|
|
temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
|
|
I915_WRITE(PCH_DPLL_SEL, temp);
|
|
}
|
|
|
|
/* set transcoder timing, panel must allow it */
|
|
assert_panel_unlocked(dev_priv, pipe);
|
|
I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
|
|
I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
|
|
I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
|
|
|
|
I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
|
|
I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
|
|
I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
|
|
|
|
intel_fdi_normal_train(crtc);
|
|
|
|
/* For PCH DP, enable TRANS_DP_CTL */
|
|
if (HAS_PCH_CPT(dev) &&
|
|
intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
|
|
reg = TRANS_DP_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~(TRANS_DP_PORT_SEL_MASK |
|
|
TRANS_DP_SYNC_MASK |
|
|
TRANS_DP_BPC_MASK);
|
|
temp |= (TRANS_DP_OUTPUT_ENABLE |
|
|
TRANS_DP_ENH_FRAMING);
|
|
temp |= TRANS_DP_8BPC;
|
|
|
|
if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
|
|
temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
|
|
if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
|
|
temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
|
|
|
|
switch (intel_trans_dp_port_sel(crtc)) {
|
|
case PCH_DP_B:
|
|
temp |= TRANS_DP_PORT_SEL_B;
|
|
break;
|
|
case PCH_DP_C:
|
|
temp |= TRANS_DP_PORT_SEL_C;
|
|
break;
|
|
case PCH_DP_D:
|
|
temp |= TRANS_DP_PORT_SEL_D;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
|
|
temp |= TRANS_DP_PORT_SEL_B;
|
|
break;
|
|
}
|
|
|
|
I915_WRITE(reg, temp);
|
|
}
|
|
|
|
intel_enable_transcoder(dev_priv, pipe);
|
|
}
|
|
|
|
static void ironlake_crtc_enable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
u32 temp;
|
|
bool is_pch_port;
|
|
|
|
if (intel_crtc->active)
|
|
return;
|
|
|
|
intel_crtc->active = true;
|
|
intel_update_watermarks(dev);
|
|
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
|
|
temp = I915_READ(PCH_LVDS);
|
|
if ((temp & LVDS_PORT_EN) == 0)
|
|
I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
|
|
}
|
|
|
|
is_pch_port = intel_crtc_driving_pch(crtc);
|
|
|
|
if (is_pch_port)
|
|
ironlake_fdi_pll_enable(crtc);
|
|
else
|
|
ironlake_fdi_disable(crtc);
|
|
|
|
/* Enable panel fitting for LVDS */
|
|
if (dev_priv->pch_pf_size &&
|
|
(intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
|
|
/* Force use of hard-coded filter coefficients
|
|
* as some pre-programmed values are broken,
|
|
* e.g. x201.
|
|
*/
|
|
I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
|
|
I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
|
|
I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
|
|
}
|
|
|
|
intel_enable_pipe(dev_priv, pipe, is_pch_port);
|
|
intel_enable_plane(dev_priv, plane, pipe);
|
|
|
|
if (is_pch_port)
|
|
ironlake_pch_enable(crtc);
|
|
|
|
intel_crtc_load_lut(crtc);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
intel_update_fbc(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
intel_crtc_update_cursor(crtc, true);
|
|
}
|
|
|
|
static void ironlake_crtc_disable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
u32 reg, temp;
|
|
|
|
if (!intel_crtc->active)
|
|
return;
|
|
|
|
intel_crtc_wait_for_pending_flips(crtc);
|
|
drm_vblank_off(dev, pipe);
|
|
intel_crtc_update_cursor(crtc, false);
|
|
|
|
intel_disable_plane(dev_priv, plane, pipe);
|
|
|
|
if (dev_priv->cfb_plane == plane &&
|
|
dev_priv->display.disable_fbc)
|
|
dev_priv->display.disable_fbc(dev);
|
|
|
|
intel_disable_pipe(dev_priv, pipe);
|
|
|
|
/* Disable PF */
|
|
I915_WRITE(PF_CTL(pipe), 0);
|
|
I915_WRITE(PF_WIN_SZ(pipe), 0);
|
|
|
|
ironlake_fdi_disable(crtc);
|
|
|
|
/* This is a horrible layering violation; we should be doing this in
|
|
* the connector/encoder ->prepare instead, but we don't always have
|
|
* enough information there about the config to know whether it will
|
|
* actually be necessary or just cause undesired flicker.
|
|
*/
|
|
intel_disable_pch_ports(dev_priv, pipe);
|
|
|
|
intel_disable_transcoder(dev_priv, pipe);
|
|
|
|
if (HAS_PCH_CPT(dev)) {
|
|
/* disable TRANS_DP_CTL */
|
|
reg = TRANS_DP_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
|
|
temp |= TRANS_DP_PORT_SEL_NONE;
|
|
I915_WRITE(reg, temp);
|
|
|
|
/* disable DPLL_SEL */
|
|
temp = I915_READ(PCH_DPLL_SEL);
|
|
switch (pipe) {
|
|
case 0:
|
|
temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
|
|
break;
|
|
case 1:
|
|
temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
|
|
break;
|
|
case 2:
|
|
/* FIXME: manage transcoder PLLs? */
|
|
temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
|
|
break;
|
|
default:
|
|
BUG(); /* wtf */
|
|
}
|
|
I915_WRITE(PCH_DPLL_SEL, temp);
|
|
}
|
|
|
|
/* disable PCH DPLL */
|
|
intel_disable_pch_pll(dev_priv, pipe);
|
|
|
|
/* Switch from PCDclk to Rawclk */
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
I915_WRITE(reg, temp & ~FDI_PCDCLK);
|
|
|
|
/* Disable CPU FDI TX PLL */
|
|
reg = FDI_TX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
|
|
|
|
POSTING_READ(reg);
|
|
udelay(100);
|
|
|
|
reg = FDI_RX_CTL(pipe);
|
|
temp = I915_READ(reg);
|
|
I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
|
|
|
|
/* Wait for the clocks to turn off. */
|
|
POSTING_READ(reg);
|
|
udelay(100);
|
|
|
|
intel_crtc->active = false;
|
|
intel_update_watermarks(dev);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
intel_update_fbc(dev);
|
|
intel_clear_scanline_wait(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
|
|
{
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
|
|
/* XXX: When our outputs are all unaware of DPMS modes other than off
|
|
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
|
|
*/
|
|
switch (mode) {
|
|
case DRM_MODE_DPMS_ON:
|
|
case DRM_MODE_DPMS_STANDBY:
|
|
case DRM_MODE_DPMS_SUSPEND:
|
|
DRM_DEBUG_KMS("crtc %d/%d dpms on\n", pipe, plane);
|
|
ironlake_crtc_enable(crtc);
|
|
break;
|
|
|
|
case DRM_MODE_DPMS_OFF:
|
|
DRM_DEBUG_KMS("crtc %d/%d dpms off\n", pipe, plane);
|
|
ironlake_crtc_disable(crtc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
|
|
{
|
|
if (!enable && intel_crtc->overlay) {
|
|
struct drm_device *dev = intel_crtc->base.dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
dev_priv->mm.interruptible = false;
|
|
(void) intel_overlay_switch_off(intel_crtc->overlay);
|
|
dev_priv->mm.interruptible = true;
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
/* Let userspace switch the overlay on again. In most cases userspace
|
|
* has to recompute where to put it anyway.
|
|
*/
|
|
}
|
|
|
|
static void i9xx_crtc_enable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
|
|
if (intel_crtc->active)
|
|
return;
|
|
|
|
intel_crtc->active = true;
|
|
intel_update_watermarks(dev);
|
|
|
|
intel_enable_pll(dev_priv, pipe);
|
|
intel_enable_pipe(dev_priv, pipe, false);
|
|
intel_enable_plane(dev_priv, plane, pipe);
|
|
|
|
intel_crtc_load_lut(crtc);
|
|
intel_update_fbc(dev);
|
|
|
|
/* Give the overlay scaler a chance to enable if it's on this pipe */
|
|
intel_crtc_dpms_overlay(intel_crtc, true);
|
|
intel_crtc_update_cursor(crtc, true);
|
|
}
|
|
|
|
static void i9xx_crtc_disable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
|
|
if (!intel_crtc->active)
|
|
return;
|
|
|
|
/* Give the overlay scaler a chance to disable if it's on this pipe */
|
|
intel_crtc_wait_for_pending_flips(crtc);
|
|
drm_vblank_off(dev, pipe);
|
|
intel_crtc_dpms_overlay(intel_crtc, false);
|
|
intel_crtc_update_cursor(crtc, false);
|
|
|
|
if (dev_priv->cfb_plane == plane &&
|
|
dev_priv->display.disable_fbc)
|
|
dev_priv->display.disable_fbc(dev);
|
|
|
|
intel_disable_plane(dev_priv, plane, pipe);
|
|
intel_disable_pipe(dev_priv, pipe);
|
|
intel_disable_pll(dev_priv, pipe);
|
|
|
|
intel_crtc->active = false;
|
|
intel_update_fbc(dev);
|
|
intel_update_watermarks(dev);
|
|
intel_clear_scanline_wait(dev);
|
|
}
|
|
|
|
static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
|
|
{
|
|
/* XXX: When our outputs are all unaware of DPMS modes other than off
|
|
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
|
|
*/
|
|
switch (mode) {
|
|
case DRM_MODE_DPMS_ON:
|
|
case DRM_MODE_DPMS_STANDBY:
|
|
case DRM_MODE_DPMS_SUSPEND:
|
|
i9xx_crtc_enable(crtc);
|
|
break;
|
|
case DRM_MODE_DPMS_OFF:
|
|
i9xx_crtc_disable(crtc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the power management mode of the pipe and plane.
|
|
*/
|
|
static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_i915_master_private *master_priv;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
bool enabled;
|
|
|
|
if (intel_crtc->dpms_mode == mode)
|
|
return;
|
|
|
|
intel_crtc->dpms_mode = mode;
|
|
|
|
dev_priv->display.dpms(crtc, mode);
|
|
|
|
if (!dev->primary->master)
|
|
return;
|
|
|
|
master_priv = dev->primary->master->driver_priv;
|
|
if (!master_priv->sarea_priv)
|
|
return;
|
|
|
|
enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
|
|
|
|
switch (pipe) {
|
|
case 0:
|
|
master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
|
|
master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
|
|
break;
|
|
case 1:
|
|
master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
|
|
master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
|
|
break;
|
|
default:
|
|
DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void intel_crtc_disable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
|
|
|
|
if (crtc->fb) {
|
|
mutex_lock(&dev->struct_mutex);
|
|
i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
}
|
|
|
|
/* Prepare for a mode set.
|
|
*
|
|
* Note we could be a lot smarter here. We need to figure out which outputs
|
|
* will be enabled, which disabled (in short, how the config will changes)
|
|
* and perform the minimum necessary steps to accomplish that, e.g. updating
|
|
* watermarks, FBC configuration, making sure PLLs are programmed correctly,
|
|
* panel fitting is in the proper state, etc.
|
|
*/
|
|
static void i9xx_crtc_prepare(struct drm_crtc *crtc)
|
|
{
|
|
i9xx_crtc_disable(crtc);
|
|
}
|
|
|
|
static void i9xx_crtc_commit(struct drm_crtc *crtc)
|
|
{
|
|
i9xx_crtc_enable(crtc);
|
|
}
|
|
|
|
static void ironlake_crtc_prepare(struct drm_crtc *crtc)
|
|
{
|
|
ironlake_crtc_disable(crtc);
|
|
}
|
|
|
|
static void ironlake_crtc_commit(struct drm_crtc *crtc)
|
|
{
|
|
ironlake_crtc_enable(crtc);
|
|
}
|
|
|
|
void intel_encoder_prepare (struct drm_encoder *encoder)
|
|
{
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
/* lvds has its own version of prepare see intel_lvds_prepare */
|
|
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
|
|
}
|
|
|
|
void intel_encoder_commit (struct drm_encoder *encoder)
|
|
{
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
/* lvds has its own version of commit see intel_lvds_commit */
|
|
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
|
|
}
|
|
|
|
void intel_encoder_destroy(struct drm_encoder *encoder)
|
|
{
|
|
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
|
|
|
|
drm_encoder_cleanup(encoder);
|
|
kfree(intel_encoder);
|
|
}
|
|
|
|
static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
/* FDI link clock is fixed at 2.7G */
|
|
if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
|
|
return false;
|
|
}
|
|
|
|
/* XXX some encoders set the crtcinfo, others don't.
|
|
* Obviously we need some form of conflict resolution here...
|
|
*/
|
|
if (adjusted_mode->crtc_htotal == 0)
|
|
drm_mode_set_crtcinfo(adjusted_mode, 0);
|
|
|
|
return true;
|
|
}
|
|
|
|
static int i945_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
return 400000;
|
|
}
|
|
|
|
static int i915_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
return 333000;
|
|
}
|
|
|
|
static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
return 200000;
|
|
}
|
|
|
|
static int i915gm_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
u16 gcfgc = 0;
|
|
|
|
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
|
|
|
|
if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
|
|
return 133000;
|
|
else {
|
|
switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
|
|
case GC_DISPLAY_CLOCK_333_MHZ:
|
|
return 333000;
|
|
default:
|
|
case GC_DISPLAY_CLOCK_190_200_MHZ:
|
|
return 190000;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int i865_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
return 266000;
|
|
}
|
|
|
|
static int i855_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
u16 hpllcc = 0;
|
|
/* Assume that the hardware is in the high speed state. This
|
|
* should be the default.
|
|
*/
|
|
switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
|
|
case GC_CLOCK_133_200:
|
|
case GC_CLOCK_100_200:
|
|
return 200000;
|
|
case GC_CLOCK_166_250:
|
|
return 250000;
|
|
case GC_CLOCK_100_133:
|
|
return 133000;
|
|
}
|
|
|
|
/* Shouldn't happen */
|
|
return 0;
|
|
}
|
|
|
|
static int i830_get_display_clock_speed(struct drm_device *dev)
|
|
{
|
|
return 133000;
|
|
}
|
|
|
|
struct fdi_m_n {
|
|
u32 tu;
|
|
u32 gmch_m;
|
|
u32 gmch_n;
|
|
u32 link_m;
|
|
u32 link_n;
|
|
};
|
|
|
|
static void
|
|
fdi_reduce_ratio(u32 *num, u32 *den)
|
|
{
|
|
while (*num > 0xffffff || *den > 0xffffff) {
|
|
*num >>= 1;
|
|
*den >>= 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
|
|
int link_clock, struct fdi_m_n *m_n)
|
|
{
|
|
m_n->tu = 64; /* default size */
|
|
|
|
/* BUG_ON(pixel_clock > INT_MAX / 36); */
|
|
m_n->gmch_m = bits_per_pixel * pixel_clock;
|
|
m_n->gmch_n = link_clock * nlanes * 8;
|
|
fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
|
|
|
|
m_n->link_m = pixel_clock;
|
|
m_n->link_n = link_clock;
|
|
fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
|
|
}
|
|
|
|
|
|
struct intel_watermark_params {
|
|
unsigned long fifo_size;
|
|
unsigned long max_wm;
|
|
unsigned long default_wm;
|
|
unsigned long guard_size;
|
|
unsigned long cacheline_size;
|
|
};
|
|
|
|
/* Pineview has different values for various configs */
|
|
static const struct intel_watermark_params pineview_display_wm = {
|
|
PINEVIEW_DISPLAY_FIFO,
|
|
PINEVIEW_MAX_WM,
|
|
PINEVIEW_DFT_WM,
|
|
PINEVIEW_GUARD_WM,
|
|
PINEVIEW_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params pineview_display_hplloff_wm = {
|
|
PINEVIEW_DISPLAY_FIFO,
|
|
PINEVIEW_MAX_WM,
|
|
PINEVIEW_DFT_HPLLOFF_WM,
|
|
PINEVIEW_GUARD_WM,
|
|
PINEVIEW_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params pineview_cursor_wm = {
|
|
PINEVIEW_CURSOR_FIFO,
|
|
PINEVIEW_CURSOR_MAX_WM,
|
|
PINEVIEW_CURSOR_DFT_WM,
|
|
PINEVIEW_CURSOR_GUARD_WM,
|
|
PINEVIEW_FIFO_LINE_SIZE,
|
|
};
|
|
static const struct intel_watermark_params pineview_cursor_hplloff_wm = {
|
|
PINEVIEW_CURSOR_FIFO,
|
|
PINEVIEW_CURSOR_MAX_WM,
|
|
PINEVIEW_CURSOR_DFT_WM,
|
|
PINEVIEW_CURSOR_GUARD_WM,
|
|
PINEVIEW_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params g4x_wm_info = {
|
|
G4X_FIFO_SIZE,
|
|
G4X_MAX_WM,
|
|
G4X_MAX_WM,
|
|
2,
|
|
G4X_FIFO_LINE_SIZE,
|
|
};
|
|
static const struct intel_watermark_params g4x_cursor_wm_info = {
|
|
I965_CURSOR_FIFO,
|
|
I965_CURSOR_MAX_WM,
|
|
I965_CURSOR_DFT_WM,
|
|
2,
|
|
G4X_FIFO_LINE_SIZE,
|
|
};
|
|
static const struct intel_watermark_params i965_cursor_wm_info = {
|
|
I965_CURSOR_FIFO,
|
|
I965_CURSOR_MAX_WM,
|
|
I965_CURSOR_DFT_WM,
|
|
2,
|
|
I915_FIFO_LINE_SIZE,
|
|
};
|
|
static const struct intel_watermark_params i945_wm_info = {
|
|
I945_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I915_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params i915_wm_info = {
|
|
I915_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I915_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params i855_wm_info = {
|
|
I855GM_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I830_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params i830_wm_info = {
|
|
I830_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I830_FIFO_LINE_SIZE
|
|
};
|
|
|
|
static const struct intel_watermark_params ironlake_display_wm_info = {
|
|
ILK_DISPLAY_FIFO,
|
|
ILK_DISPLAY_MAXWM,
|
|
ILK_DISPLAY_DFTWM,
|
|
2,
|
|
ILK_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params ironlake_cursor_wm_info = {
|
|
ILK_CURSOR_FIFO,
|
|
ILK_CURSOR_MAXWM,
|
|
ILK_CURSOR_DFTWM,
|
|
2,
|
|
ILK_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params ironlake_display_srwm_info = {
|
|
ILK_DISPLAY_SR_FIFO,
|
|
ILK_DISPLAY_MAX_SRWM,
|
|
ILK_DISPLAY_DFT_SRWM,
|
|
2,
|
|
ILK_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params ironlake_cursor_srwm_info = {
|
|
ILK_CURSOR_SR_FIFO,
|
|
ILK_CURSOR_MAX_SRWM,
|
|
ILK_CURSOR_DFT_SRWM,
|
|
2,
|
|
ILK_FIFO_LINE_SIZE
|
|
};
|
|
|
|
static const struct intel_watermark_params sandybridge_display_wm_info = {
|
|
SNB_DISPLAY_FIFO,
|
|
SNB_DISPLAY_MAXWM,
|
|
SNB_DISPLAY_DFTWM,
|
|
2,
|
|
SNB_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params sandybridge_cursor_wm_info = {
|
|
SNB_CURSOR_FIFO,
|
|
SNB_CURSOR_MAXWM,
|
|
SNB_CURSOR_DFTWM,
|
|
2,
|
|
SNB_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params sandybridge_display_srwm_info = {
|
|
SNB_DISPLAY_SR_FIFO,
|
|
SNB_DISPLAY_MAX_SRWM,
|
|
SNB_DISPLAY_DFT_SRWM,
|
|
2,
|
|
SNB_FIFO_LINE_SIZE
|
|
};
|
|
static const struct intel_watermark_params sandybridge_cursor_srwm_info = {
|
|
SNB_CURSOR_SR_FIFO,
|
|
SNB_CURSOR_MAX_SRWM,
|
|
SNB_CURSOR_DFT_SRWM,
|
|
2,
|
|
SNB_FIFO_LINE_SIZE
|
|
};
|
|
|
|
|
|
/**
|
|
* intel_calculate_wm - calculate watermark level
|
|
* @clock_in_khz: pixel clock
|
|
* @wm: chip FIFO params
|
|
* @pixel_size: display pixel size
|
|
* @latency_ns: memory latency for the platform
|
|
*
|
|
* Calculate the watermark level (the level at which the display plane will
|
|
* start fetching from memory again). Each chip has a different display
|
|
* FIFO size and allocation, so the caller needs to figure that out and pass
|
|
* in the correct intel_watermark_params structure.
|
|
*
|
|
* As the pixel clock runs, the FIFO will be drained at a rate that depends
|
|
* on the pixel size. When it reaches the watermark level, it'll start
|
|
* fetching FIFO line sized based chunks from memory until the FIFO fills
|
|
* past the watermark point. If the FIFO drains completely, a FIFO underrun
|
|
* will occur, and a display engine hang could result.
|
|
*/
|
|
static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
|
|
const struct intel_watermark_params *wm,
|
|
int fifo_size,
|
|
int pixel_size,
|
|
unsigned long latency_ns)
|
|
{
|
|
long entries_required, wm_size;
|
|
|
|
/*
|
|
* Note: we need to make sure we don't overflow for various clock &
|
|
* latency values.
|
|
* clocks go from a few thousand to several hundred thousand.
|
|
* latency is usually a few thousand
|
|
*/
|
|
entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
|
|
1000;
|
|
entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
|
|
|
|
DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
|
|
|
|
wm_size = fifo_size - (entries_required + wm->guard_size);
|
|
|
|
DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
|
|
|
|
/* Don't promote wm_size to unsigned... */
|
|
if (wm_size > (long)wm->max_wm)
|
|
wm_size = wm->max_wm;
|
|
if (wm_size <= 0)
|
|
wm_size = wm->default_wm;
|
|
return wm_size;
|
|
}
|
|
|
|
struct cxsr_latency {
|
|
int is_desktop;
|
|
int is_ddr3;
|
|
unsigned long fsb_freq;
|
|
unsigned long mem_freq;
|
|
unsigned long display_sr;
|
|
unsigned long display_hpll_disable;
|
|
unsigned long cursor_sr;
|
|
unsigned long cursor_hpll_disable;
|
|
};
|
|
|
|
static const struct cxsr_latency cxsr_latency_table[] = {
|
|
{1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
|
|
{1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
|
|
{1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
|
|
{1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
|
|
{1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
|
|
|
|
{1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
|
|
{1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
|
|
{1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
|
|
{1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
|
|
{1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
|
|
|
|
{1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
|
|
{1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
|
|
{1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
|
|
{1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
|
|
{1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
|
|
|
|
{0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
|
|
{0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
|
|
{0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
|
|
{0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
|
|
{0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
|
|
|
|
{0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
|
|
{0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
|
|
{0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
|
|
{0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
|
|
{0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
|
|
|
|
{0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
|
|
{0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
|
|
{0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
|
|
{0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
|
|
{0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
|
|
};
|
|
|
|
static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
|
|
int is_ddr3,
|
|
int fsb,
|
|
int mem)
|
|
{
|
|
const struct cxsr_latency *latency;
|
|
int i;
|
|
|
|
if (fsb == 0 || mem == 0)
|
|
return NULL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
|
|
latency = &cxsr_latency_table[i];
|
|
if (is_desktop == latency->is_desktop &&
|
|
is_ddr3 == latency->is_ddr3 &&
|
|
fsb == latency->fsb_freq && mem == latency->mem_freq)
|
|
return latency;
|
|
}
|
|
|
|
DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void pineview_disable_cxsr(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
/* deactivate cxsr */
|
|
I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN);
|
|
}
|
|
|
|
/*
|
|
* Latency for FIFO fetches is dependent on several factors:
|
|
* - memory configuration (speed, channels)
|
|
* - chipset
|
|
* - current MCH state
|
|
* It can be fairly high in some situations, so here we assume a fairly
|
|
* pessimal value. It's a tradeoff between extra memory fetches (if we
|
|
* set this value too high, the FIFO will fetch frequently to stay full)
|
|
* and power consumption (set it too low to save power and we might see
|
|
* FIFO underruns and display "flicker").
|
|
*
|
|
* A value of 5us seems to be a good balance; safe for very low end
|
|
* platforms but not overly aggressive on lower latency configs.
|
|
*/
|
|
static const int latency_ns = 5000;
|
|
|
|
static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t dsparb = I915_READ(DSPARB);
|
|
int size;
|
|
|
|
size = dsparb & 0x7f;
|
|
if (plane)
|
|
size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
|
|
|
|
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
|
|
plane ? "B" : "A", size);
|
|
|
|
return size;
|
|
}
|
|
|
|
static int i85x_get_fifo_size(struct drm_device *dev, int plane)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t dsparb = I915_READ(DSPARB);
|
|
int size;
|
|
|
|
size = dsparb & 0x1ff;
|
|
if (plane)
|
|
size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
|
|
size >>= 1; /* Convert to cachelines */
|
|
|
|
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
|
|
plane ? "B" : "A", size);
|
|
|
|
return size;
|
|
}
|
|
|
|
static int i845_get_fifo_size(struct drm_device *dev, int plane)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t dsparb = I915_READ(DSPARB);
|
|
int size;
|
|
|
|
size = dsparb & 0x7f;
|
|
size >>= 2; /* Convert to cachelines */
|
|
|
|
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
|
|
plane ? "B" : "A",
|
|
size);
|
|
|
|
return size;
|
|
}
|
|
|
|
static int i830_get_fifo_size(struct drm_device *dev, int plane)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t dsparb = I915_READ(DSPARB);
|
|
int size;
|
|
|
|
size = dsparb & 0x7f;
|
|
size >>= 1; /* Convert to cachelines */
|
|
|
|
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
|
|
plane ? "B" : "A", size);
|
|
|
|
return size;
|
|
}
|
|
|
|
static struct drm_crtc *single_enabled_crtc(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc *crtc, *enabled = NULL;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
if (crtc->enabled && crtc->fb) {
|
|
if (enabled)
|
|
return NULL;
|
|
enabled = crtc;
|
|
}
|
|
}
|
|
|
|
return enabled;
|
|
}
|
|
|
|
static void pineview_update_wm(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc;
|
|
const struct cxsr_latency *latency;
|
|
u32 reg;
|
|
unsigned long wm;
|
|
|
|
latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3,
|
|
dev_priv->fsb_freq, dev_priv->mem_freq);
|
|
if (!latency) {
|
|
DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
|
|
pineview_disable_cxsr(dev);
|
|
return;
|
|
}
|
|
|
|
crtc = single_enabled_crtc(dev);
|
|
if (crtc) {
|
|
int clock = crtc->mode.clock;
|
|
int pixel_size = crtc->fb->bits_per_pixel / 8;
|
|
|
|
/* Display SR */
|
|
wm = intel_calculate_wm(clock, &pineview_display_wm,
|
|
pineview_display_wm.fifo_size,
|
|
pixel_size, latency->display_sr);
|
|
reg = I915_READ(DSPFW1);
|
|
reg &= ~DSPFW_SR_MASK;
|
|
reg |= wm << DSPFW_SR_SHIFT;
|
|
I915_WRITE(DSPFW1, reg);
|
|
DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
|
|
|
|
/* cursor SR */
|
|
wm = intel_calculate_wm(clock, &pineview_cursor_wm,
|
|
pineview_display_wm.fifo_size,
|
|
pixel_size, latency->cursor_sr);
|
|
reg = I915_READ(DSPFW3);
|
|
reg &= ~DSPFW_CURSOR_SR_MASK;
|
|
reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
|
|
I915_WRITE(DSPFW3, reg);
|
|
|
|
/* Display HPLL off SR */
|
|
wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
|
|
pineview_display_hplloff_wm.fifo_size,
|
|
pixel_size, latency->display_hpll_disable);
|
|
reg = I915_READ(DSPFW3);
|
|
reg &= ~DSPFW_HPLL_SR_MASK;
|
|
reg |= wm & DSPFW_HPLL_SR_MASK;
|
|
I915_WRITE(DSPFW3, reg);
|
|
|
|
/* cursor HPLL off SR */
|
|
wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
|
|
pineview_display_hplloff_wm.fifo_size,
|
|
pixel_size, latency->cursor_hpll_disable);
|
|
reg = I915_READ(DSPFW3);
|
|
reg &= ~DSPFW_HPLL_CURSOR_MASK;
|
|
reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
|
|
I915_WRITE(DSPFW3, reg);
|
|
DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
|
|
|
|
/* activate cxsr */
|
|
I915_WRITE(DSPFW3,
|
|
I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN);
|
|
DRM_DEBUG_KMS("Self-refresh is enabled\n");
|
|
} else {
|
|
pineview_disable_cxsr(dev);
|
|
DRM_DEBUG_KMS("Self-refresh is disabled\n");
|
|
}
|
|
}
|
|
|
|
static bool g4x_compute_wm0(struct drm_device *dev,
|
|
int plane,
|
|
const struct intel_watermark_params *display,
|
|
int display_latency_ns,
|
|
const struct intel_watermark_params *cursor,
|
|
int cursor_latency_ns,
|
|
int *plane_wm,
|
|
int *cursor_wm)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int htotal, hdisplay, clock, pixel_size;
|
|
int line_time_us, line_count;
|
|
int entries, tlb_miss;
|
|
|
|
crtc = intel_get_crtc_for_plane(dev, plane);
|
|
if (crtc->fb == NULL || !crtc->enabled) {
|
|
*cursor_wm = cursor->guard_size;
|
|
*plane_wm = display->guard_size;
|
|
return false;
|
|
}
|
|
|
|
htotal = crtc->mode.htotal;
|
|
hdisplay = crtc->mode.hdisplay;
|
|
clock = crtc->mode.clock;
|
|
pixel_size = crtc->fb->bits_per_pixel / 8;
|
|
|
|
/* Use the small buffer method to calculate plane watermark */
|
|
entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
|
|
tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
|
|
if (tlb_miss > 0)
|
|
entries += tlb_miss;
|
|
entries = DIV_ROUND_UP(entries, display->cacheline_size);
|
|
*plane_wm = entries + display->guard_size;
|
|
if (*plane_wm > (int)display->max_wm)
|
|
*plane_wm = display->max_wm;
|
|
|
|
/* Use the large buffer method to calculate cursor watermark */
|
|
line_time_us = ((htotal * 1000) / clock);
|
|
line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
|
|
entries = line_count * 64 * pixel_size;
|
|
tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
|
|
if (tlb_miss > 0)
|
|
entries += tlb_miss;
|
|
entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
|
|
*cursor_wm = entries + cursor->guard_size;
|
|
if (*cursor_wm > (int)cursor->max_wm)
|
|
*cursor_wm = (int)cursor->max_wm;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Check the wm result.
|
|
*
|
|
* If any calculated watermark values is larger than the maximum value that
|
|
* can be programmed into the associated watermark register, that watermark
|
|
* must be disabled.
|
|
*/
|
|
static bool g4x_check_srwm(struct drm_device *dev,
|
|
int display_wm, int cursor_wm,
|
|
const struct intel_watermark_params *display,
|
|
const struct intel_watermark_params *cursor)
|
|
{
|
|
DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n",
|
|
display_wm, cursor_wm);
|
|
|
|
if (display_wm > display->max_wm) {
|
|
DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
|
|
display_wm, display->max_wm);
|
|
return false;
|
|
}
|
|
|
|
if (cursor_wm > cursor->max_wm) {
|
|
DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
|
|
cursor_wm, cursor->max_wm);
|
|
return false;
|
|
}
|
|
|
|
if (!(display_wm || cursor_wm)) {
|
|
DRM_DEBUG_KMS("SR latency is 0, disabling\n");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool g4x_compute_srwm(struct drm_device *dev,
|
|
int plane,
|
|
int latency_ns,
|
|
const struct intel_watermark_params *display,
|
|
const struct intel_watermark_params *cursor,
|
|
int *display_wm, int *cursor_wm)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int hdisplay, htotal, pixel_size, clock;
|
|
unsigned long line_time_us;
|
|
int line_count, line_size;
|
|
int small, large;
|
|
int entries;
|
|
|
|
if (!latency_ns) {
|
|
*display_wm = *cursor_wm = 0;
|
|
return false;
|
|
}
|
|
|
|
crtc = intel_get_crtc_for_plane(dev, plane);
|
|
hdisplay = crtc->mode.hdisplay;
|
|
htotal = crtc->mode.htotal;
|
|
clock = crtc->mode.clock;
|
|
pixel_size = crtc->fb->bits_per_pixel / 8;
|
|
|
|
line_time_us = (htotal * 1000) / clock;
|
|
line_count = (latency_ns / line_time_us + 1000) / 1000;
|
|
line_size = hdisplay * pixel_size;
|
|
|
|
/* Use the minimum of the small and large buffer method for primary */
|
|
small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
|
|
large = line_count * line_size;
|
|
|
|
entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
|
|
*display_wm = entries + display->guard_size;
|
|
|
|
/* calculate the self-refresh watermark for display cursor */
|
|
entries = line_count * pixel_size * 64;
|
|
entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
|
|
*cursor_wm = entries + cursor->guard_size;
|
|
|
|
return g4x_check_srwm(dev,
|
|
*display_wm, *cursor_wm,
|
|
display, cursor);
|
|
}
|
|
|
|
#define single_plane_enabled(mask) is_power_of_2(mask)
|
|
|
|
static void g4x_update_wm(struct drm_device *dev)
|
|
{
|
|
static const int sr_latency_ns = 12000;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
|
|
int plane_sr, cursor_sr;
|
|
unsigned int enabled = 0;
|
|
|
|
if (g4x_compute_wm0(dev, 0,
|
|
&g4x_wm_info, latency_ns,
|
|
&g4x_cursor_wm_info, latency_ns,
|
|
&planea_wm, &cursora_wm))
|
|
enabled |= 1;
|
|
|
|
if (g4x_compute_wm0(dev, 1,
|
|
&g4x_wm_info, latency_ns,
|
|
&g4x_cursor_wm_info, latency_ns,
|
|
&planeb_wm, &cursorb_wm))
|
|
enabled |= 2;
|
|
|
|
plane_sr = cursor_sr = 0;
|
|
if (single_plane_enabled(enabled) &&
|
|
g4x_compute_srwm(dev, ffs(enabled) - 1,
|
|
sr_latency_ns,
|
|
&g4x_wm_info,
|
|
&g4x_cursor_wm_info,
|
|
&plane_sr, &cursor_sr))
|
|
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
|
|
else
|
|
I915_WRITE(FW_BLC_SELF,
|
|
I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN);
|
|
|
|
DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
|
|
planea_wm, cursora_wm,
|
|
planeb_wm, cursorb_wm,
|
|
plane_sr, cursor_sr);
|
|
|
|
I915_WRITE(DSPFW1,
|
|
(plane_sr << DSPFW_SR_SHIFT) |
|
|
(cursorb_wm << DSPFW_CURSORB_SHIFT) |
|
|
(planeb_wm << DSPFW_PLANEB_SHIFT) |
|
|
planea_wm);
|
|
I915_WRITE(DSPFW2,
|
|
(I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
|
|
(cursora_wm << DSPFW_CURSORA_SHIFT));
|
|
/* HPLL off in SR has some issues on G4x... disable it */
|
|
I915_WRITE(DSPFW3,
|
|
(I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
|
|
(cursor_sr << DSPFW_CURSOR_SR_SHIFT));
|
|
}
|
|
|
|
static void i965_update_wm(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc;
|
|
int srwm = 1;
|
|
int cursor_sr = 16;
|
|
|
|
/* Calc sr entries for one plane configs */
|
|
crtc = single_enabled_crtc(dev);
|
|
if (crtc) {
|
|
/* self-refresh has much higher latency */
|
|
static const int sr_latency_ns = 12000;
|
|
int clock = crtc->mode.clock;
|
|
int htotal = crtc->mode.htotal;
|
|
int hdisplay = crtc->mode.hdisplay;
|
|
int pixel_size = crtc->fb->bits_per_pixel / 8;
|
|
unsigned long line_time_us;
|
|
int entries;
|
|
|
|
line_time_us = ((htotal * 1000) / clock);
|
|
|
|
/* Use ns/us then divide to preserve precision */
|
|
entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * hdisplay;
|
|
entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
|
|
srwm = I965_FIFO_SIZE - entries;
|
|
if (srwm < 0)
|
|
srwm = 1;
|
|
srwm &= 0x1ff;
|
|
DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n",
|
|
entries, srwm);
|
|
|
|
entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * 64;
|
|
entries = DIV_ROUND_UP(entries,
|
|
i965_cursor_wm_info.cacheline_size);
|
|
cursor_sr = i965_cursor_wm_info.fifo_size -
|
|
(entries + i965_cursor_wm_info.guard_size);
|
|
|
|
if (cursor_sr > i965_cursor_wm_info.max_wm)
|
|
cursor_sr = i965_cursor_wm_info.max_wm;
|
|
|
|
DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
|
|
"cursor %d\n", srwm, cursor_sr);
|
|
|
|
if (IS_CRESTLINE(dev))
|
|
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
|
|
} else {
|
|
/* Turn off self refresh if both pipes are enabled */
|
|
if (IS_CRESTLINE(dev))
|
|
I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
|
|
& ~FW_BLC_SELF_EN);
|
|
}
|
|
|
|
DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
|
|
srwm);
|
|
|
|
/* 965 has limitations... */
|
|
I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) |
|
|
(8 << 16) | (8 << 8) | (8 << 0));
|
|
I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
|
|
/* update cursor SR watermark */
|
|
I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
|
|
}
|
|
|
|
static void i9xx_update_wm(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
const struct intel_watermark_params *wm_info;
|
|
uint32_t fwater_lo;
|
|
uint32_t fwater_hi;
|
|
int cwm, srwm = 1;
|
|
int fifo_size;
|
|
int planea_wm, planeb_wm;
|
|
struct drm_crtc *crtc, *enabled = NULL;
|
|
|
|
if (IS_I945GM(dev))
|
|
wm_info = &i945_wm_info;
|
|
else if (!IS_GEN2(dev))
|
|
wm_info = &i915_wm_info;
|
|
else
|
|
wm_info = &i855_wm_info;
|
|
|
|
fifo_size = dev_priv->display.get_fifo_size(dev, 0);
|
|
crtc = intel_get_crtc_for_plane(dev, 0);
|
|
if (crtc->enabled && crtc->fb) {
|
|
planea_wm = intel_calculate_wm(crtc->mode.clock,
|
|
wm_info, fifo_size,
|
|
crtc->fb->bits_per_pixel / 8,
|
|
latency_ns);
|
|
enabled = crtc;
|
|
} else
|
|
planea_wm = fifo_size - wm_info->guard_size;
|
|
|
|
fifo_size = dev_priv->display.get_fifo_size(dev, 1);
|
|
crtc = intel_get_crtc_for_plane(dev, 1);
|
|
if (crtc->enabled && crtc->fb) {
|
|
planeb_wm = intel_calculate_wm(crtc->mode.clock,
|
|
wm_info, fifo_size,
|
|
crtc->fb->bits_per_pixel / 8,
|
|
latency_ns);
|
|
if (enabled == NULL)
|
|
enabled = crtc;
|
|
else
|
|
enabled = NULL;
|
|
} else
|
|
planeb_wm = fifo_size - wm_info->guard_size;
|
|
|
|
DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
|
|
|
|
/*
|
|
* Overlay gets an aggressive default since video jitter is bad.
|
|
*/
|
|
cwm = 2;
|
|
|
|
/* Play safe and disable self-refresh before adjusting watermarks. */
|
|
if (IS_I945G(dev) || IS_I945GM(dev))
|
|
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0);
|
|
else if (IS_I915GM(dev))
|
|
I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
|
|
|
|
/* Calc sr entries for one plane configs */
|
|
if (HAS_FW_BLC(dev) && enabled) {
|
|
/* self-refresh has much higher latency */
|
|
static const int sr_latency_ns = 6000;
|
|
int clock = enabled->mode.clock;
|
|
int htotal = enabled->mode.htotal;
|
|
int hdisplay = enabled->mode.hdisplay;
|
|
int pixel_size = enabled->fb->bits_per_pixel / 8;
|
|
unsigned long line_time_us;
|
|
int entries;
|
|
|
|
line_time_us = (htotal * 1000) / clock;
|
|
|
|
/* Use ns/us then divide to preserve precision */
|
|
entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * hdisplay;
|
|
entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
|
|
DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
|
|
srwm = wm_info->fifo_size - entries;
|
|
if (srwm < 0)
|
|
srwm = 1;
|
|
|
|
if (IS_I945G(dev) || IS_I945GM(dev))
|
|
I915_WRITE(FW_BLC_SELF,
|
|
FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
|
|
else if (IS_I915GM(dev))
|
|
I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
|
|
}
|
|
|
|
DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
|
|
planea_wm, planeb_wm, cwm, srwm);
|
|
|
|
fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
|
|
fwater_hi = (cwm & 0x1f);
|
|
|
|
/* Set request length to 8 cachelines per fetch */
|
|
fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
|
|
fwater_hi = fwater_hi | (1 << 8);
|
|
|
|
I915_WRITE(FW_BLC, fwater_lo);
|
|
I915_WRITE(FW_BLC2, fwater_hi);
|
|
|
|
if (HAS_FW_BLC(dev)) {
|
|
if (enabled) {
|
|
if (IS_I945G(dev) || IS_I945GM(dev))
|
|
I915_WRITE(FW_BLC_SELF,
|
|
FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
|
|
else if (IS_I915GM(dev))
|
|
I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
|
|
DRM_DEBUG_KMS("memory self refresh enabled\n");
|
|
} else
|
|
DRM_DEBUG_KMS("memory self refresh disabled\n");
|
|
}
|
|
}
|
|
|
|
static void i830_update_wm(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc;
|
|
uint32_t fwater_lo;
|
|
int planea_wm;
|
|
|
|
crtc = single_enabled_crtc(dev);
|
|
if (crtc == NULL)
|
|
return;
|
|
|
|
planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info,
|
|
dev_priv->display.get_fifo_size(dev, 0),
|
|
crtc->fb->bits_per_pixel / 8,
|
|
latency_ns);
|
|
fwater_lo = I915_READ(FW_BLC) & ~0xfff;
|
|
fwater_lo |= (3<<8) | planea_wm;
|
|
|
|
DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
|
|
|
|
I915_WRITE(FW_BLC, fwater_lo);
|
|
}
|
|
|
|
#define ILK_LP0_PLANE_LATENCY 700
|
|
#define ILK_LP0_CURSOR_LATENCY 1300
|
|
|
|
/*
|
|
* Check the wm result.
|
|
*
|
|
* If any calculated watermark values is larger than the maximum value that
|
|
* can be programmed into the associated watermark register, that watermark
|
|
* must be disabled.
|
|
*/
|
|
static bool ironlake_check_srwm(struct drm_device *dev, int level,
|
|
int fbc_wm, int display_wm, int cursor_wm,
|
|
const struct intel_watermark_params *display,
|
|
const struct intel_watermark_params *cursor)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d,"
|
|
" cursor %d\n", level, display_wm, fbc_wm, cursor_wm);
|
|
|
|
if (fbc_wm > SNB_FBC_MAX_SRWM) {
|
|
DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n",
|
|
fbc_wm, SNB_FBC_MAX_SRWM, level);
|
|
|
|
/* fbc has it's own way to disable FBC WM */
|
|
I915_WRITE(DISP_ARB_CTL,
|
|
I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
|
|
return false;
|
|
}
|
|
|
|
if (display_wm > display->max_wm) {
|
|
DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n",
|
|
display_wm, SNB_DISPLAY_MAX_SRWM, level);
|
|
return false;
|
|
}
|
|
|
|
if (cursor_wm > cursor->max_wm) {
|
|
DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n",
|
|
cursor_wm, SNB_CURSOR_MAX_SRWM, level);
|
|
return false;
|
|
}
|
|
|
|
if (!(fbc_wm || display_wm || cursor_wm)) {
|
|
DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Compute watermark values of WM[1-3],
|
|
*/
|
|
static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane,
|
|
int latency_ns,
|
|
const struct intel_watermark_params *display,
|
|
const struct intel_watermark_params *cursor,
|
|
int *fbc_wm, int *display_wm, int *cursor_wm)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
unsigned long line_time_us;
|
|
int hdisplay, htotal, pixel_size, clock;
|
|
int line_count, line_size;
|
|
int small, large;
|
|
int entries;
|
|
|
|
if (!latency_ns) {
|
|
*fbc_wm = *display_wm = *cursor_wm = 0;
|
|
return false;
|
|
}
|
|
|
|
crtc = intel_get_crtc_for_plane(dev, plane);
|
|
hdisplay = crtc->mode.hdisplay;
|
|
htotal = crtc->mode.htotal;
|
|
clock = crtc->mode.clock;
|
|
pixel_size = crtc->fb->bits_per_pixel / 8;
|
|
|
|
line_time_us = (htotal * 1000) / clock;
|
|
line_count = (latency_ns / line_time_us + 1000) / 1000;
|
|
line_size = hdisplay * pixel_size;
|
|
|
|
/* Use the minimum of the small and large buffer method for primary */
|
|
small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
|
|
large = line_count * line_size;
|
|
|
|
entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
|
|
*display_wm = entries + display->guard_size;
|
|
|
|
/*
|
|
* Spec says:
|
|
* FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2
|
|
*/
|
|
*fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2;
|
|
|
|
/* calculate the self-refresh watermark for display cursor */
|
|
entries = line_count * pixel_size * 64;
|
|
entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
|
|
*cursor_wm = entries + cursor->guard_size;
|
|
|
|
return ironlake_check_srwm(dev, level,
|
|
*fbc_wm, *display_wm, *cursor_wm,
|
|
display, cursor);
|
|
}
|
|
|
|
static void ironlake_update_wm(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int fbc_wm, plane_wm, cursor_wm;
|
|
unsigned int enabled;
|
|
|
|
enabled = 0;
|
|
if (g4x_compute_wm0(dev, 0,
|
|
&ironlake_display_wm_info,
|
|
ILK_LP0_PLANE_LATENCY,
|
|
&ironlake_cursor_wm_info,
|
|
ILK_LP0_CURSOR_LATENCY,
|
|
&plane_wm, &cursor_wm)) {
|
|
I915_WRITE(WM0_PIPEA_ILK,
|
|
(plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
|
|
DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
|
|
" plane %d, " "cursor: %d\n",
|
|
plane_wm, cursor_wm);
|
|
enabled |= 1;
|
|
}
|
|
|
|
if (g4x_compute_wm0(dev, 1,
|
|
&ironlake_display_wm_info,
|
|
ILK_LP0_PLANE_LATENCY,
|
|
&ironlake_cursor_wm_info,
|
|
ILK_LP0_CURSOR_LATENCY,
|
|
&plane_wm, &cursor_wm)) {
|
|
I915_WRITE(WM0_PIPEB_ILK,
|
|
(plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
|
|
DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
|
|
" plane %d, cursor: %d\n",
|
|
plane_wm, cursor_wm);
|
|
enabled |= 2;
|
|
}
|
|
|
|
/*
|
|
* Calculate and update the self-refresh watermark only when one
|
|
* display plane is used.
|
|
*/
|
|
I915_WRITE(WM3_LP_ILK, 0);
|
|
I915_WRITE(WM2_LP_ILK, 0);
|
|
I915_WRITE(WM1_LP_ILK, 0);
|
|
|
|
if (!single_plane_enabled(enabled))
|
|
return;
|
|
enabled = ffs(enabled) - 1;
|
|
|
|
/* WM1 */
|
|
if (!ironlake_compute_srwm(dev, 1, enabled,
|
|
ILK_READ_WM1_LATENCY() * 500,
|
|
&ironlake_display_srwm_info,
|
|
&ironlake_cursor_srwm_info,
|
|
&fbc_wm, &plane_wm, &cursor_wm))
|
|
return;
|
|
|
|
I915_WRITE(WM1_LP_ILK,
|
|
WM1_LP_SR_EN |
|
|
(ILK_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
|
|
(fbc_wm << WM1_LP_FBC_SHIFT) |
|
|
(plane_wm << WM1_LP_SR_SHIFT) |
|
|
cursor_wm);
|
|
|
|
/* WM2 */
|
|
if (!ironlake_compute_srwm(dev, 2, enabled,
|
|
ILK_READ_WM2_LATENCY() * 500,
|
|
&ironlake_display_srwm_info,
|
|
&ironlake_cursor_srwm_info,
|
|
&fbc_wm, &plane_wm, &cursor_wm))
|
|
return;
|
|
|
|
I915_WRITE(WM2_LP_ILK,
|
|
WM2_LP_EN |
|
|
(ILK_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
|
|
(fbc_wm << WM1_LP_FBC_SHIFT) |
|
|
(plane_wm << WM1_LP_SR_SHIFT) |
|
|
cursor_wm);
|
|
|
|
/*
|
|
* WM3 is unsupported on ILK, probably because we don't have latency
|
|
* data for that power state
|
|
*/
|
|
}
|
|
|
|
static void sandybridge_update_wm(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
|
|
int fbc_wm, plane_wm, cursor_wm;
|
|
unsigned int enabled;
|
|
|
|
enabled = 0;
|
|
if (g4x_compute_wm0(dev, 0,
|
|
&sandybridge_display_wm_info, latency,
|
|
&sandybridge_cursor_wm_info, latency,
|
|
&plane_wm, &cursor_wm)) {
|
|
I915_WRITE(WM0_PIPEA_ILK,
|
|
(plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
|
|
DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
|
|
" plane %d, " "cursor: %d\n",
|
|
plane_wm, cursor_wm);
|
|
enabled |= 1;
|
|
}
|
|
|
|
if (g4x_compute_wm0(dev, 1,
|
|
&sandybridge_display_wm_info, latency,
|
|
&sandybridge_cursor_wm_info, latency,
|
|
&plane_wm, &cursor_wm)) {
|
|
I915_WRITE(WM0_PIPEB_ILK,
|
|
(plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
|
|
DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
|
|
" plane %d, cursor: %d\n",
|
|
plane_wm, cursor_wm);
|
|
enabled |= 2;
|
|
}
|
|
|
|
/*
|
|
* Calculate and update the self-refresh watermark only when one
|
|
* display plane is used.
|
|
*
|
|
* SNB support 3 levels of watermark.
|
|
*
|
|
* WM1/WM2/WM2 watermarks have to be enabled in the ascending order,
|
|
* and disabled in the descending order
|
|
*
|
|
*/
|
|
I915_WRITE(WM3_LP_ILK, 0);
|
|
I915_WRITE(WM2_LP_ILK, 0);
|
|
I915_WRITE(WM1_LP_ILK, 0);
|
|
|
|
if (!single_plane_enabled(enabled))
|
|
return;
|
|
enabled = ffs(enabled) - 1;
|
|
|
|
/* WM1 */
|
|
if (!ironlake_compute_srwm(dev, 1, enabled,
|
|
SNB_READ_WM1_LATENCY() * 500,
|
|
&sandybridge_display_srwm_info,
|
|
&sandybridge_cursor_srwm_info,
|
|
&fbc_wm, &plane_wm, &cursor_wm))
|
|
return;
|
|
|
|
I915_WRITE(WM1_LP_ILK,
|
|
WM1_LP_SR_EN |
|
|
(SNB_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
|
|
(fbc_wm << WM1_LP_FBC_SHIFT) |
|
|
(plane_wm << WM1_LP_SR_SHIFT) |
|
|
cursor_wm);
|
|
|
|
/* WM2 */
|
|
if (!ironlake_compute_srwm(dev, 2, enabled,
|
|
SNB_READ_WM2_LATENCY() * 500,
|
|
&sandybridge_display_srwm_info,
|
|
&sandybridge_cursor_srwm_info,
|
|
&fbc_wm, &plane_wm, &cursor_wm))
|
|
return;
|
|
|
|
I915_WRITE(WM2_LP_ILK,
|
|
WM2_LP_EN |
|
|
(SNB_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
|
|
(fbc_wm << WM1_LP_FBC_SHIFT) |
|
|
(plane_wm << WM1_LP_SR_SHIFT) |
|
|
cursor_wm);
|
|
|
|
/* WM3 */
|
|
if (!ironlake_compute_srwm(dev, 3, enabled,
|
|
SNB_READ_WM3_LATENCY() * 500,
|
|
&sandybridge_display_srwm_info,
|
|
&sandybridge_cursor_srwm_info,
|
|
&fbc_wm, &plane_wm, &cursor_wm))
|
|
return;
|
|
|
|
I915_WRITE(WM3_LP_ILK,
|
|
WM3_LP_EN |
|
|
(SNB_READ_WM3_LATENCY() << WM1_LP_LATENCY_SHIFT) |
|
|
(fbc_wm << WM1_LP_FBC_SHIFT) |
|
|
(plane_wm << WM1_LP_SR_SHIFT) |
|
|
cursor_wm);
|
|
}
|
|
|
|
/**
|
|
* intel_update_watermarks - update FIFO watermark values based on current modes
|
|
*
|
|
* Calculate watermark values for the various WM regs based on current mode
|
|
* and plane configuration.
|
|
*
|
|
* There are several cases to deal with here:
|
|
* - normal (i.e. non-self-refresh)
|
|
* - self-refresh (SR) mode
|
|
* - lines are large relative to FIFO size (buffer can hold up to 2)
|
|
* - lines are small relative to FIFO size (buffer can hold more than 2
|
|
* lines), so need to account for TLB latency
|
|
*
|
|
* The normal calculation is:
|
|
* watermark = dotclock * bytes per pixel * latency
|
|
* where latency is platform & configuration dependent (we assume pessimal
|
|
* values here).
|
|
*
|
|
* The SR calculation is:
|
|
* watermark = (trunc(latency/line time)+1) * surface width *
|
|
* bytes per pixel
|
|
* where
|
|
* line time = htotal / dotclock
|
|
* surface width = hdisplay for normal plane and 64 for cursor
|
|
* and latency is assumed to be high, as above.
|
|
*
|
|
* The final value programmed to the register should always be rounded up,
|
|
* and include an extra 2 entries to account for clock crossings.
|
|
*
|
|
* We don't use the sprite, so we can ignore that. And on Crestline we have
|
|
* to set the non-SR watermarks to 8.
|
|
*/
|
|
static void intel_update_watermarks(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (dev_priv->display.update_wm)
|
|
dev_priv->display.update_wm(dev);
|
|
}
|
|
|
|
static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
|
|
{
|
|
return dev_priv->lvds_use_ssc && i915_panel_use_ssc;
|
|
}
|
|
|
|
static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode,
|
|
int x, int y,
|
|
struct drm_framebuffer *old_fb)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
int refclk, num_connectors = 0;
|
|
intel_clock_t clock, reduced_clock;
|
|
u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
|
|
bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
|
|
bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
|
|
struct drm_mode_config *mode_config = &dev->mode_config;
|
|
struct intel_encoder *encoder;
|
|
const intel_limit_t *limit;
|
|
int ret;
|
|
u32 temp;
|
|
u32 lvds_sync = 0;
|
|
|
|
list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
|
|
if (encoder->base.crtc != crtc)
|
|
continue;
|
|
|
|
switch (encoder->type) {
|
|
case INTEL_OUTPUT_LVDS:
|
|
is_lvds = true;
|
|
break;
|
|
case INTEL_OUTPUT_SDVO:
|
|
case INTEL_OUTPUT_HDMI:
|
|
is_sdvo = true;
|
|
if (encoder->needs_tv_clock)
|
|
is_tv = true;
|
|
break;
|
|
case INTEL_OUTPUT_DVO:
|
|
is_dvo = true;
|
|
break;
|
|
case INTEL_OUTPUT_TVOUT:
|
|
is_tv = true;
|
|
break;
|
|
case INTEL_OUTPUT_ANALOG:
|
|
is_crt = true;
|
|
break;
|
|
case INTEL_OUTPUT_DISPLAYPORT:
|
|
is_dp = true;
|
|
break;
|
|
}
|
|
|
|
num_connectors++;
|
|
}
|
|
|
|
if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
|
|
refclk = dev_priv->lvds_ssc_freq * 1000;
|
|
DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
|
|
refclk / 1000);
|
|
} else if (!IS_GEN2(dev)) {
|
|
refclk = 96000;
|
|
} else {
|
|
refclk = 48000;
|
|
}
|
|
|
|
/*
|
|
* Returns a set of divisors for the desired target clock with the given
|
|
* refclk, or FALSE. The returned values represent the clock equation:
|
|
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
|
|
*/
|
|
limit = intel_limit(crtc, refclk);
|
|
ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
|
|
if (!ok) {
|
|
DRM_ERROR("Couldn't find PLL settings for mode!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Ensure that the cursor is valid for the new mode before changing... */
|
|
intel_crtc_update_cursor(crtc, true);
|
|
|
|
if (is_lvds && dev_priv->lvds_downclock_avail) {
|
|
has_reduced_clock = limit->find_pll(limit, crtc,
|
|
dev_priv->lvds_downclock,
|
|
refclk,
|
|
&reduced_clock);
|
|
if (has_reduced_clock && (clock.p != reduced_clock.p)) {
|
|
/*
|
|
* If the different P is found, it means that we can't
|
|
* switch the display clock by using the FP0/FP1.
|
|
* In such case we will disable the LVDS downclock
|
|
* feature.
|
|
*/
|
|
DRM_DEBUG_KMS("Different P is found for "
|
|
"LVDS clock/downclock\n");
|
|
has_reduced_clock = 0;
|
|
}
|
|
}
|
|
/* SDVO TV has fixed PLL values depend on its clock range,
|
|
this mirrors vbios setting. */
|
|
if (is_sdvo && is_tv) {
|
|
if (adjusted_mode->clock >= 100000
|
|
&& adjusted_mode->clock < 140500) {
|
|
clock.p1 = 2;
|
|
clock.p2 = 10;
|
|
clock.n = 3;
|
|
clock.m1 = 16;
|
|
clock.m2 = 8;
|
|
} else if (adjusted_mode->clock >= 140500
|
|
&& adjusted_mode->clock <= 200000) {
|
|
clock.p1 = 1;
|
|
clock.p2 = 10;
|
|
clock.n = 6;
|
|
clock.m1 = 12;
|
|
clock.m2 = 8;
|
|
}
|
|
}
|
|
|
|
if (IS_PINEVIEW(dev)) {
|
|
fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
|
|
if (has_reduced_clock)
|
|
fp2 = (1 << reduced_clock.n) << 16 |
|
|
reduced_clock.m1 << 8 | reduced_clock.m2;
|
|
} else {
|
|
fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
|
|
if (has_reduced_clock)
|
|
fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
|
|
reduced_clock.m2;
|
|
}
|
|
|
|
dpll = DPLL_VGA_MODE_DIS;
|
|
|
|
if (!IS_GEN2(dev)) {
|
|
if (is_lvds)
|
|
dpll |= DPLLB_MODE_LVDS;
|
|
else
|
|
dpll |= DPLLB_MODE_DAC_SERIAL;
|
|
if (is_sdvo) {
|
|
int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
|
|
if (pixel_multiplier > 1) {
|
|
if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
|
|
dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
|
|
}
|
|
dpll |= DPLL_DVO_HIGH_SPEED;
|
|
}
|
|
if (is_dp)
|
|
dpll |= DPLL_DVO_HIGH_SPEED;
|
|
|
|
/* compute bitmask from p1 value */
|
|
if (IS_PINEVIEW(dev))
|
|
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
|
|
else {
|
|
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
|
|
if (IS_G4X(dev) && has_reduced_clock)
|
|
dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
|
|
}
|
|
switch (clock.p2) {
|
|
case 5:
|
|
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
|
|
break;
|
|
case 7:
|
|
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
|
|
break;
|
|
case 10:
|
|
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
|
|
break;
|
|
case 14:
|
|
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
|
|
break;
|
|
}
|
|
if (INTEL_INFO(dev)->gen >= 4)
|
|
dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
|
|
} else {
|
|
if (is_lvds) {
|
|
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
|
|
} else {
|
|
if (clock.p1 == 2)
|
|
dpll |= PLL_P1_DIVIDE_BY_TWO;
|
|
else
|
|
dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
|
|
if (clock.p2 == 4)
|
|
dpll |= PLL_P2_DIVIDE_BY_4;
|
|
}
|
|
}
|
|
|
|
if (is_sdvo && is_tv)
|
|
dpll |= PLL_REF_INPUT_TVCLKINBC;
|
|
else if (is_tv)
|
|
/* XXX: just matching BIOS for now */
|
|
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
|
|
dpll |= 3;
|
|
else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
|
|
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
|
|
else
|
|
dpll |= PLL_REF_INPUT_DREFCLK;
|
|
|
|
/* setup pipeconf */
|
|
pipeconf = I915_READ(PIPECONF(pipe));
|
|
|
|
/* Set up the display plane register */
|
|
dspcntr = DISPPLANE_GAMMA_ENABLE;
|
|
|
|
/* Ironlake's plane is forced to pipe, bit 24 is to
|
|
enable color space conversion */
|
|
if (pipe == 0)
|
|
dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
|
|
else
|
|
dspcntr |= DISPPLANE_SEL_PIPE_B;
|
|
|
|
if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
|
|
/* Enable pixel doubling when the dot clock is > 90% of the (display)
|
|
* core speed.
|
|
*
|
|
* XXX: No double-wide on 915GM pipe B. Is that the only reason for the
|
|
* pipe == 0 check?
|
|
*/
|
|
if (mode->clock >
|
|
dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
|
|
pipeconf |= PIPECONF_DOUBLE_WIDE;
|
|
else
|
|
pipeconf &= ~PIPECONF_DOUBLE_WIDE;
|
|
}
|
|
|
|
dpll |= DPLL_VCO_ENABLE;
|
|
|
|
DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
|
|
drm_mode_debug_printmodeline(mode);
|
|
|
|
I915_WRITE(FP0(pipe), fp);
|
|
I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
|
|
|
|
POSTING_READ(DPLL(pipe));
|
|
udelay(150);
|
|
|
|
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
|
|
* This is an exception to the general rule that mode_set doesn't turn
|
|
* things on.
|
|
*/
|
|
if (is_lvds) {
|
|
temp = I915_READ(LVDS);
|
|
temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
|
|
if (pipe == 1) {
|
|
temp |= LVDS_PIPEB_SELECT;
|
|
} else {
|
|
temp &= ~LVDS_PIPEB_SELECT;
|
|
}
|
|
/* set the corresponsding LVDS_BORDER bit */
|
|
temp |= dev_priv->lvds_border_bits;
|
|
/* Set the B0-B3 data pairs corresponding to whether we're going to
|
|
* set the DPLLs for dual-channel mode or not.
|
|
*/
|
|
if (clock.p2 == 7)
|
|
temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
|
|
else
|
|
temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
|
|
|
|
/* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
|
|
* appropriately here, but we need to look more thoroughly into how
|
|
* panels behave in the two modes.
|
|
*/
|
|
/* set the dithering flag on LVDS as needed */
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
if (dev_priv->lvds_dither)
|
|
temp |= LVDS_ENABLE_DITHER;
|
|
else
|
|
temp &= ~LVDS_ENABLE_DITHER;
|
|
}
|
|
if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
|
|
lvds_sync |= LVDS_HSYNC_POLARITY;
|
|
if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
|
|
lvds_sync |= LVDS_VSYNC_POLARITY;
|
|
if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
|
|
!= lvds_sync) {
|
|
char flags[2] = "-+";
|
|
DRM_INFO("Changing LVDS panel from "
|
|
"(%chsync, %cvsync) to (%chsync, %cvsync)\n",
|
|
flags[!(temp & LVDS_HSYNC_POLARITY)],
|
|
flags[!(temp & LVDS_VSYNC_POLARITY)],
|
|
flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
|
|
flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
|
|
temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
|
|
temp |= lvds_sync;
|
|
}
|
|
I915_WRITE(LVDS, temp);
|
|
}
|
|
|
|
if (is_dp) {
|
|
intel_dp_set_m_n(crtc, mode, adjusted_mode);
|
|
}
|
|
|
|
I915_WRITE(DPLL(pipe), dpll);
|
|
|
|
/* Wait for the clocks to stabilize. */
|
|
POSTING_READ(DPLL(pipe));
|
|
udelay(150);
|
|
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
temp = 0;
|
|
if (is_sdvo) {
|
|
temp = intel_mode_get_pixel_multiplier(adjusted_mode);
|
|
if (temp > 1)
|
|
temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
|
|
else
|
|
temp = 0;
|
|
}
|
|
I915_WRITE(DPLL_MD(pipe), temp);
|
|
} else {
|
|
/* The pixel multiplier can only be updated once the
|
|
* DPLL is enabled and the clocks are stable.
|
|
*
|
|
* So write it again.
|
|
*/
|
|
I915_WRITE(DPLL(pipe), dpll);
|
|
}
|
|
|
|
intel_crtc->lowfreq_avail = false;
|
|
if (is_lvds && has_reduced_clock && i915_powersave) {
|
|
I915_WRITE(FP1(pipe), fp2);
|
|
intel_crtc->lowfreq_avail = true;
|
|
if (HAS_PIPE_CXSR(dev)) {
|
|
DRM_DEBUG_KMS("enabling CxSR downclocking\n");
|
|
pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
|
|
}
|
|
} else {
|
|
I915_WRITE(FP1(pipe), fp);
|
|
if (HAS_PIPE_CXSR(dev)) {
|
|
DRM_DEBUG_KMS("disabling CxSR downclocking\n");
|
|
pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
|
|
}
|
|
}
|
|
|
|
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
|
|
pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
|
|
/* the chip adds 2 halflines automatically */
|
|
adjusted_mode->crtc_vdisplay -= 1;
|
|
adjusted_mode->crtc_vtotal -= 1;
|
|
adjusted_mode->crtc_vblank_start -= 1;
|
|
adjusted_mode->crtc_vblank_end -= 1;
|
|
adjusted_mode->crtc_vsync_end -= 1;
|
|
adjusted_mode->crtc_vsync_start -= 1;
|
|
} else
|
|
pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
|
|
|
|
I915_WRITE(HTOTAL(pipe),
|
|
(adjusted_mode->crtc_hdisplay - 1) |
|
|
((adjusted_mode->crtc_htotal - 1) << 16));
|
|
I915_WRITE(HBLANK(pipe),
|
|
(adjusted_mode->crtc_hblank_start - 1) |
|
|
((adjusted_mode->crtc_hblank_end - 1) << 16));
|
|
I915_WRITE(HSYNC(pipe),
|
|
(adjusted_mode->crtc_hsync_start - 1) |
|
|
((adjusted_mode->crtc_hsync_end - 1) << 16));
|
|
|
|
I915_WRITE(VTOTAL(pipe),
|
|
(adjusted_mode->crtc_vdisplay - 1) |
|
|
((adjusted_mode->crtc_vtotal - 1) << 16));
|
|
I915_WRITE(VBLANK(pipe),
|
|
(adjusted_mode->crtc_vblank_start - 1) |
|
|
((adjusted_mode->crtc_vblank_end - 1) << 16));
|
|
I915_WRITE(VSYNC(pipe),
|
|
(adjusted_mode->crtc_vsync_start - 1) |
|
|
((adjusted_mode->crtc_vsync_end - 1) << 16));
|
|
|
|
/* pipesrc and dspsize control the size that is scaled from,
|
|
* which should always be the user's requested size.
|
|
*/
|
|
I915_WRITE(DSPSIZE(plane),
|
|
((mode->vdisplay - 1) << 16) |
|
|
(mode->hdisplay - 1));
|
|
I915_WRITE(DSPPOS(plane), 0);
|
|
I915_WRITE(PIPESRC(pipe),
|
|
((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
|
|
|
|
I915_WRITE(PIPECONF(pipe), pipeconf);
|
|
POSTING_READ(PIPECONF(pipe));
|
|
intel_enable_pipe(dev_priv, pipe, false);
|
|
|
|
intel_wait_for_vblank(dev, pipe);
|
|
|
|
I915_WRITE(DSPCNTR(plane), dspcntr);
|
|
POSTING_READ(DSPCNTR(plane));
|
|
intel_enable_plane(dev_priv, plane, pipe);
|
|
|
|
ret = intel_pipe_set_base(crtc, x, y, old_fb);
|
|
|
|
intel_update_watermarks(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode,
|
|
int x, int y,
|
|
struct drm_framebuffer *old_fb)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int plane = intel_crtc->plane;
|
|
int refclk, num_connectors = 0;
|
|
intel_clock_t clock, reduced_clock;
|
|
u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
|
|
bool ok, has_reduced_clock = false, is_sdvo = false;
|
|
bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
|
|
struct intel_encoder *has_edp_encoder = NULL;
|
|
struct drm_mode_config *mode_config = &dev->mode_config;
|
|
struct intel_encoder *encoder;
|
|
const intel_limit_t *limit;
|
|
int ret;
|
|
struct fdi_m_n m_n = {0};
|
|
u32 temp;
|
|
u32 lvds_sync = 0;
|
|
int target_clock, pixel_multiplier, lane, link_bw, bpp, factor;
|
|
|
|
list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
|
|
if (encoder->base.crtc != crtc)
|
|
continue;
|
|
|
|
switch (encoder->type) {
|
|
case INTEL_OUTPUT_LVDS:
|
|
is_lvds = true;
|
|
break;
|
|
case INTEL_OUTPUT_SDVO:
|
|
case INTEL_OUTPUT_HDMI:
|
|
is_sdvo = true;
|
|
if (encoder->needs_tv_clock)
|
|
is_tv = true;
|
|
break;
|
|
case INTEL_OUTPUT_TVOUT:
|
|
is_tv = true;
|
|
break;
|
|
case INTEL_OUTPUT_ANALOG:
|
|
is_crt = true;
|
|
break;
|
|
case INTEL_OUTPUT_DISPLAYPORT:
|
|
is_dp = true;
|
|
break;
|
|
case INTEL_OUTPUT_EDP:
|
|
has_edp_encoder = encoder;
|
|
break;
|
|
}
|
|
|
|
num_connectors++;
|
|
}
|
|
|
|
if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
|
|
refclk = dev_priv->lvds_ssc_freq * 1000;
|
|
DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
|
|
refclk / 1000);
|
|
} else {
|
|
refclk = 96000;
|
|
if (!has_edp_encoder ||
|
|
intel_encoder_is_pch_edp(&has_edp_encoder->base))
|
|
refclk = 120000; /* 120Mhz refclk */
|
|
}
|
|
|
|
/*
|
|
* Returns a set of divisors for the desired target clock with the given
|
|
* refclk, or FALSE. The returned values represent the clock equation:
|
|
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
|
|
*/
|
|
limit = intel_limit(crtc, refclk);
|
|
ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
|
|
if (!ok) {
|
|
DRM_ERROR("Couldn't find PLL settings for mode!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Ensure that the cursor is valid for the new mode before changing... */
|
|
intel_crtc_update_cursor(crtc, true);
|
|
|
|
if (is_lvds && dev_priv->lvds_downclock_avail) {
|
|
has_reduced_clock = limit->find_pll(limit, crtc,
|
|
dev_priv->lvds_downclock,
|
|
refclk,
|
|
&reduced_clock);
|
|
if (has_reduced_clock && (clock.p != reduced_clock.p)) {
|
|
/*
|
|
* If the different P is found, it means that we can't
|
|
* switch the display clock by using the FP0/FP1.
|
|
* In such case we will disable the LVDS downclock
|
|
* feature.
|
|
*/
|
|
DRM_DEBUG_KMS("Different P is found for "
|
|
"LVDS clock/downclock\n");
|
|
has_reduced_clock = 0;
|
|
}
|
|
}
|
|
/* SDVO TV has fixed PLL values depend on its clock range,
|
|
this mirrors vbios setting. */
|
|
if (is_sdvo && is_tv) {
|
|
if (adjusted_mode->clock >= 100000
|
|
&& adjusted_mode->clock < 140500) {
|
|
clock.p1 = 2;
|
|
clock.p2 = 10;
|
|
clock.n = 3;
|
|
clock.m1 = 16;
|
|
clock.m2 = 8;
|
|
} else if (adjusted_mode->clock >= 140500
|
|
&& adjusted_mode->clock <= 200000) {
|
|
clock.p1 = 1;
|
|
clock.p2 = 10;
|
|
clock.n = 6;
|
|
clock.m1 = 12;
|
|
clock.m2 = 8;
|
|
}
|
|
}
|
|
|
|
/* FDI link */
|
|
pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
|
|
lane = 0;
|
|
/* CPU eDP doesn't require FDI link, so just set DP M/N
|
|
according to current link config */
|
|
if (has_edp_encoder &&
|
|
!intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
target_clock = mode->clock;
|
|
intel_edp_link_config(has_edp_encoder,
|
|
&lane, &link_bw);
|
|
} else {
|
|
/* [e]DP over FDI requires target mode clock
|
|
instead of link clock */
|
|
if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
|
|
target_clock = mode->clock;
|
|
else
|
|
target_clock = adjusted_mode->clock;
|
|
|
|
/* FDI is a binary signal running at ~2.7GHz, encoding
|
|
* each output octet as 10 bits. The actual frequency
|
|
* is stored as a divider into a 100MHz clock, and the
|
|
* mode pixel clock is stored in units of 1KHz.
|
|
* Hence the bw of each lane in terms of the mode signal
|
|
* is:
|
|
*/
|
|
link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
|
|
}
|
|
|
|
/* determine panel color depth */
|
|
temp = I915_READ(PIPECONF(pipe));
|
|
temp &= ~PIPE_BPC_MASK;
|
|
if (is_lvds) {
|
|
/* the BPC will be 6 if it is 18-bit LVDS panel */
|
|
if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) == LVDS_A3_POWER_UP)
|
|
temp |= PIPE_8BPC;
|
|
else
|
|
temp |= PIPE_6BPC;
|
|
} else if (has_edp_encoder) {
|
|
switch (dev_priv->edp.bpp/3) {
|
|
case 8:
|
|
temp |= PIPE_8BPC;
|
|
break;
|
|
case 10:
|
|
temp |= PIPE_10BPC;
|
|
break;
|
|
case 6:
|
|
temp |= PIPE_6BPC;
|
|
break;
|
|
case 12:
|
|
temp |= PIPE_12BPC;
|
|
break;
|
|
}
|
|
} else
|
|
temp |= PIPE_8BPC;
|
|
I915_WRITE(PIPECONF(pipe), temp);
|
|
|
|
switch (temp & PIPE_BPC_MASK) {
|
|
case PIPE_8BPC:
|
|
bpp = 24;
|
|
break;
|
|
case PIPE_10BPC:
|
|
bpp = 30;
|
|
break;
|
|
case PIPE_6BPC:
|
|
bpp = 18;
|
|
break;
|
|
case PIPE_12BPC:
|
|
bpp = 36;
|
|
break;
|
|
default:
|
|
DRM_ERROR("unknown pipe bpc value\n");
|
|
bpp = 24;
|
|
}
|
|
|
|
if (!lane) {
|
|
/*
|
|
* Account for spread spectrum to avoid
|
|
* oversubscribing the link. Max center spread
|
|
* is 2.5%; use 5% for safety's sake.
|
|
*/
|
|
u32 bps = target_clock * bpp * 21 / 20;
|
|
lane = bps / (link_bw * 8) + 1;
|
|
}
|
|
|
|
intel_crtc->fdi_lanes = lane;
|
|
|
|
if (pixel_multiplier > 1)
|
|
link_bw *= pixel_multiplier;
|
|
ironlake_compute_m_n(bpp, lane, target_clock, link_bw, &m_n);
|
|
|
|
/* Ironlake: try to setup display ref clock before DPLL
|
|
* enabling. This is only under driver's control after
|
|
* PCH B stepping, previous chipset stepping should be
|
|
* ignoring this setting.
|
|
*/
|
|
temp = I915_READ(PCH_DREF_CONTROL);
|
|
/* Always enable nonspread source */
|
|
temp &= ~DREF_NONSPREAD_SOURCE_MASK;
|
|
temp |= DREF_NONSPREAD_SOURCE_ENABLE;
|
|
temp &= ~DREF_SSC_SOURCE_MASK;
|
|
temp |= DREF_SSC_SOURCE_ENABLE;
|
|
I915_WRITE(PCH_DREF_CONTROL, temp);
|
|
|
|
POSTING_READ(PCH_DREF_CONTROL);
|
|
udelay(200);
|
|
|
|
if (has_edp_encoder) {
|
|
if (intel_panel_use_ssc(dev_priv)) {
|
|
temp |= DREF_SSC1_ENABLE;
|
|
I915_WRITE(PCH_DREF_CONTROL, temp);
|
|
|
|
POSTING_READ(PCH_DREF_CONTROL);
|
|
udelay(200);
|
|
}
|
|
temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
|
|
|
|
/* Enable CPU source on CPU attached eDP */
|
|
if (!intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
if (intel_panel_use_ssc(dev_priv))
|
|
temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
|
|
else
|
|
temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
|
|
} else {
|
|
/* Enable SSC on PCH eDP if needed */
|
|
if (intel_panel_use_ssc(dev_priv)) {
|
|
DRM_ERROR("enabling SSC on PCH\n");
|
|
temp |= DREF_SUPERSPREAD_SOURCE_ENABLE;
|
|
}
|
|
}
|
|
I915_WRITE(PCH_DREF_CONTROL, temp);
|
|
POSTING_READ(PCH_DREF_CONTROL);
|
|
udelay(200);
|
|
}
|
|
|
|
fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
|
|
if (has_reduced_clock)
|
|
fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
|
|
reduced_clock.m2;
|
|
|
|
/* Enable autotuning of the PLL clock (if permissible) */
|
|
factor = 21;
|
|
if (is_lvds) {
|
|
if ((intel_panel_use_ssc(dev_priv) &&
|
|
dev_priv->lvds_ssc_freq == 100) ||
|
|
(I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
|
|
factor = 25;
|
|
} else if (is_sdvo && is_tv)
|
|
factor = 20;
|
|
|
|
if (clock.m1 < factor * clock.n)
|
|
fp |= FP_CB_TUNE;
|
|
|
|
dpll = 0;
|
|
|
|
if (is_lvds)
|
|
dpll |= DPLLB_MODE_LVDS;
|
|
else
|
|
dpll |= DPLLB_MODE_DAC_SERIAL;
|
|
if (is_sdvo) {
|
|
int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
|
|
if (pixel_multiplier > 1) {
|
|
dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
|
|
}
|
|
dpll |= DPLL_DVO_HIGH_SPEED;
|
|
}
|
|
if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
|
|
dpll |= DPLL_DVO_HIGH_SPEED;
|
|
|
|
/* compute bitmask from p1 value */
|
|
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
|
|
/* also FPA1 */
|
|
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
|
|
|
|
switch (clock.p2) {
|
|
case 5:
|
|
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
|
|
break;
|
|
case 7:
|
|
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
|
|
break;
|
|
case 10:
|
|
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
|
|
break;
|
|
case 14:
|
|
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
|
|
break;
|
|
}
|
|
|
|
if (is_sdvo && is_tv)
|
|
dpll |= PLL_REF_INPUT_TVCLKINBC;
|
|
else if (is_tv)
|
|
/* XXX: just matching BIOS for now */
|
|
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
|
|
dpll |= 3;
|
|
else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
|
|
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
|
|
else
|
|
dpll |= PLL_REF_INPUT_DREFCLK;
|
|
|
|
/* setup pipeconf */
|
|
pipeconf = I915_READ(PIPECONF(pipe));
|
|
|
|
/* Set up the display plane register */
|
|
dspcntr = DISPPLANE_GAMMA_ENABLE;
|
|
|
|
DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
|
|
drm_mode_debug_printmodeline(mode);
|
|
|
|
/* PCH eDP needs FDI, but CPU eDP does not */
|
|
if (!has_edp_encoder || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
I915_WRITE(PCH_FP0(pipe), fp);
|
|
I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
|
|
|
|
POSTING_READ(PCH_DPLL(pipe));
|
|
udelay(150);
|
|
}
|
|
|
|
/* enable transcoder DPLL */
|
|
if (HAS_PCH_CPT(dev)) {
|
|
temp = I915_READ(PCH_DPLL_SEL);
|
|
switch (pipe) {
|
|
case 0:
|
|
temp |= TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL;
|
|
break;
|
|
case 1:
|
|
temp |= TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL;
|
|
break;
|
|
case 2:
|
|
/* FIXME: manage transcoder PLLs? */
|
|
temp |= TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL;
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
I915_WRITE(PCH_DPLL_SEL, temp);
|
|
|
|
POSTING_READ(PCH_DPLL_SEL);
|
|
udelay(150);
|
|
}
|
|
|
|
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
|
|
* This is an exception to the general rule that mode_set doesn't turn
|
|
* things on.
|
|
*/
|
|
if (is_lvds) {
|
|
temp = I915_READ(PCH_LVDS);
|
|
temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
|
|
if (pipe == 1) {
|
|
if (HAS_PCH_CPT(dev))
|
|
temp |= PORT_TRANS_B_SEL_CPT;
|
|
else
|
|
temp |= LVDS_PIPEB_SELECT;
|
|
} else {
|
|
if (HAS_PCH_CPT(dev))
|
|
temp &= ~PORT_TRANS_SEL_MASK;
|
|
else
|
|
temp &= ~LVDS_PIPEB_SELECT;
|
|
}
|
|
/* set the corresponsding LVDS_BORDER bit */
|
|
temp |= dev_priv->lvds_border_bits;
|
|
/* Set the B0-B3 data pairs corresponding to whether we're going to
|
|
* set the DPLLs for dual-channel mode or not.
|
|
*/
|
|
if (clock.p2 == 7)
|
|
temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
|
|
else
|
|
temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
|
|
|
|
/* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
|
|
* appropriately here, but we need to look more thoroughly into how
|
|
* panels behave in the two modes.
|
|
*/
|
|
if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
|
|
lvds_sync |= LVDS_HSYNC_POLARITY;
|
|
if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
|
|
lvds_sync |= LVDS_VSYNC_POLARITY;
|
|
if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
|
|
!= lvds_sync) {
|
|
char flags[2] = "-+";
|
|
DRM_INFO("Changing LVDS panel from "
|
|
"(%chsync, %cvsync) to (%chsync, %cvsync)\n",
|
|
flags[!(temp & LVDS_HSYNC_POLARITY)],
|
|
flags[!(temp & LVDS_VSYNC_POLARITY)],
|
|
flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
|
|
flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
|
|
temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
|
|
temp |= lvds_sync;
|
|
}
|
|
I915_WRITE(PCH_LVDS, temp);
|
|
}
|
|
|
|
/* set the dithering flag and clear for anything other than a panel. */
|
|
pipeconf &= ~PIPECONF_DITHER_EN;
|
|
pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
|
|
if (dev_priv->lvds_dither && (is_lvds || has_edp_encoder)) {
|
|
pipeconf |= PIPECONF_DITHER_EN;
|
|
pipeconf |= PIPECONF_DITHER_TYPE_ST1;
|
|
}
|
|
|
|
if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
intel_dp_set_m_n(crtc, mode, adjusted_mode);
|
|
} else {
|
|
/* For non-DP output, clear any trans DP clock recovery setting.*/
|
|
I915_WRITE(TRANSDATA_M1(pipe), 0);
|
|
I915_WRITE(TRANSDATA_N1(pipe), 0);
|
|
I915_WRITE(TRANSDPLINK_M1(pipe), 0);
|
|
I915_WRITE(TRANSDPLINK_N1(pipe), 0);
|
|
}
|
|
|
|
if (!has_edp_encoder ||
|
|
intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
I915_WRITE(PCH_DPLL(pipe), dpll);
|
|
|
|
/* Wait for the clocks to stabilize. */
|
|
POSTING_READ(PCH_DPLL(pipe));
|
|
udelay(150);
|
|
|
|
/* The pixel multiplier can only be updated once the
|
|
* DPLL is enabled and the clocks are stable.
|
|
*
|
|
* So write it again.
|
|
*/
|
|
I915_WRITE(PCH_DPLL(pipe), dpll);
|
|
}
|
|
|
|
intel_crtc->lowfreq_avail = false;
|
|
if (is_lvds && has_reduced_clock && i915_powersave) {
|
|
I915_WRITE(PCH_FP1(pipe), fp2);
|
|
intel_crtc->lowfreq_avail = true;
|
|
if (HAS_PIPE_CXSR(dev)) {
|
|
DRM_DEBUG_KMS("enabling CxSR downclocking\n");
|
|
pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
|
|
}
|
|
} else {
|
|
I915_WRITE(PCH_FP1(pipe), fp);
|
|
if (HAS_PIPE_CXSR(dev)) {
|
|
DRM_DEBUG_KMS("disabling CxSR downclocking\n");
|
|
pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
|
|
}
|
|
}
|
|
|
|
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
|
|
pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
|
|
/* the chip adds 2 halflines automatically */
|
|
adjusted_mode->crtc_vdisplay -= 1;
|
|
adjusted_mode->crtc_vtotal -= 1;
|
|
adjusted_mode->crtc_vblank_start -= 1;
|
|
adjusted_mode->crtc_vblank_end -= 1;
|
|
adjusted_mode->crtc_vsync_end -= 1;
|
|
adjusted_mode->crtc_vsync_start -= 1;
|
|
} else
|
|
pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
|
|
|
|
I915_WRITE(HTOTAL(pipe),
|
|
(adjusted_mode->crtc_hdisplay - 1) |
|
|
((adjusted_mode->crtc_htotal - 1) << 16));
|
|
I915_WRITE(HBLANK(pipe),
|
|
(adjusted_mode->crtc_hblank_start - 1) |
|
|
((adjusted_mode->crtc_hblank_end - 1) << 16));
|
|
I915_WRITE(HSYNC(pipe),
|
|
(adjusted_mode->crtc_hsync_start - 1) |
|
|
((adjusted_mode->crtc_hsync_end - 1) << 16));
|
|
|
|
I915_WRITE(VTOTAL(pipe),
|
|
(adjusted_mode->crtc_vdisplay - 1) |
|
|
((adjusted_mode->crtc_vtotal - 1) << 16));
|
|
I915_WRITE(VBLANK(pipe),
|
|
(adjusted_mode->crtc_vblank_start - 1) |
|
|
((adjusted_mode->crtc_vblank_end - 1) << 16));
|
|
I915_WRITE(VSYNC(pipe),
|
|
(adjusted_mode->crtc_vsync_start - 1) |
|
|
((adjusted_mode->crtc_vsync_end - 1) << 16));
|
|
|
|
/* pipesrc controls the size that is scaled from, which should
|
|
* always be the user's requested size.
|
|
*/
|
|
I915_WRITE(PIPESRC(pipe),
|
|
((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
|
|
|
|
I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
|
|
I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
|
|
I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
|
|
I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
|
|
|
|
if (has_edp_encoder &&
|
|
!intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
ironlake_set_pll_edp(crtc, adjusted_mode->clock);
|
|
}
|
|
|
|
I915_WRITE(PIPECONF(pipe), pipeconf);
|
|
POSTING_READ(PIPECONF(pipe));
|
|
|
|
intel_wait_for_vblank(dev, pipe);
|
|
|
|
if (IS_GEN5(dev)) {
|
|
/* enable address swizzle for tiling buffer */
|
|
temp = I915_READ(DISP_ARB_CTL);
|
|
I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
|
|
}
|
|
|
|
I915_WRITE(DSPCNTR(plane), dspcntr);
|
|
POSTING_READ(DSPCNTR(plane));
|
|
|
|
ret = intel_pipe_set_base(crtc, x, y, old_fb);
|
|
|
|
intel_update_watermarks(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int intel_crtc_mode_set(struct drm_crtc *crtc,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode,
|
|
int x, int y,
|
|
struct drm_framebuffer *old_fb)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int ret;
|
|
|
|
drm_vblank_pre_modeset(dev, pipe);
|
|
|
|
ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
|
|
x, y, old_fb);
|
|
|
|
drm_vblank_post_modeset(dev, pipe);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/** Loads the palette/gamma unit for the CRTC with the prepared values */
|
|
void intel_crtc_load_lut(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int palreg = PALETTE(intel_crtc->pipe);
|
|
int i;
|
|
|
|
/* The clocks have to be on to load the palette. */
|
|
if (!crtc->enabled)
|
|
return;
|
|
|
|
/* use legacy palette for Ironlake */
|
|
if (HAS_PCH_SPLIT(dev))
|
|
palreg = LGC_PALETTE(intel_crtc->pipe);
|
|
|
|
for (i = 0; i < 256; i++) {
|
|
I915_WRITE(palreg + 4 * i,
|
|
(intel_crtc->lut_r[i] << 16) |
|
|
(intel_crtc->lut_g[i] << 8) |
|
|
intel_crtc->lut_b[i]);
|
|
}
|
|
}
|
|
|
|
static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
bool visible = base != 0;
|
|
u32 cntl;
|
|
|
|
if (intel_crtc->cursor_visible == visible)
|
|
return;
|
|
|
|
cntl = I915_READ(_CURACNTR);
|
|
if (visible) {
|
|
/* On these chipsets we can only modify the base whilst
|
|
* the cursor is disabled.
|
|
*/
|
|
I915_WRITE(_CURABASE, base);
|
|
|
|
cntl &= ~(CURSOR_FORMAT_MASK);
|
|
/* XXX width must be 64, stride 256 => 0x00 << 28 */
|
|
cntl |= CURSOR_ENABLE |
|
|
CURSOR_GAMMA_ENABLE |
|
|
CURSOR_FORMAT_ARGB;
|
|
} else
|
|
cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
|
|
I915_WRITE(_CURACNTR, cntl);
|
|
|
|
intel_crtc->cursor_visible = visible;
|
|
}
|
|
|
|
static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
bool visible = base != 0;
|
|
|
|
if (intel_crtc->cursor_visible != visible) {
|
|
uint32_t cntl = I915_READ(CURCNTR(pipe));
|
|
if (base) {
|
|
cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
|
|
cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
|
|
cntl |= pipe << 28; /* Connect to correct pipe */
|
|
} else {
|
|
cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
|
|
cntl |= CURSOR_MODE_DISABLE;
|
|
}
|
|
I915_WRITE(CURCNTR(pipe), cntl);
|
|
|
|
intel_crtc->cursor_visible = visible;
|
|
}
|
|
/* and commit changes on next vblank */
|
|
I915_WRITE(CURBASE(pipe), base);
|
|
}
|
|
|
|
/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
|
|
static void intel_crtc_update_cursor(struct drm_crtc *crtc,
|
|
bool on)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int x = intel_crtc->cursor_x;
|
|
int y = intel_crtc->cursor_y;
|
|
u32 base, pos;
|
|
bool visible;
|
|
|
|
pos = 0;
|
|
|
|
if (on && crtc->enabled && crtc->fb) {
|
|
base = intel_crtc->cursor_addr;
|
|
if (x > (int) crtc->fb->width)
|
|
base = 0;
|
|
|
|
if (y > (int) crtc->fb->height)
|
|
base = 0;
|
|
} else
|
|
base = 0;
|
|
|
|
if (x < 0) {
|
|
if (x + intel_crtc->cursor_width < 0)
|
|
base = 0;
|
|
|
|
pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
|
|
x = -x;
|
|
}
|
|
pos |= x << CURSOR_X_SHIFT;
|
|
|
|
if (y < 0) {
|
|
if (y + intel_crtc->cursor_height < 0)
|
|
base = 0;
|
|
|
|
pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
|
|
y = -y;
|
|
}
|
|
pos |= y << CURSOR_Y_SHIFT;
|
|
|
|
visible = base != 0;
|
|
if (!visible && !intel_crtc->cursor_visible)
|
|
return;
|
|
|
|
I915_WRITE(CURPOS(pipe), pos);
|
|
if (IS_845G(dev) || IS_I865G(dev))
|
|
i845_update_cursor(crtc, base);
|
|
else
|
|
i9xx_update_cursor(crtc, base);
|
|
|
|
if (visible)
|
|
intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
|
|
}
|
|
|
|
static int intel_crtc_cursor_set(struct drm_crtc *crtc,
|
|
struct drm_file *file,
|
|
uint32_t handle,
|
|
uint32_t width, uint32_t height)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
struct drm_i915_gem_object *obj;
|
|
uint32_t addr;
|
|
int ret;
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
/* if we want to turn off the cursor ignore width and height */
|
|
if (!handle) {
|
|
DRM_DEBUG_KMS("cursor off\n");
|
|
addr = 0;
|
|
obj = NULL;
|
|
mutex_lock(&dev->struct_mutex);
|
|
goto finish;
|
|
}
|
|
|
|
/* Currently we only support 64x64 cursors */
|
|
if (width != 64 || height != 64) {
|
|
DRM_ERROR("we currently only support 64x64 cursors\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
|
|
if (&obj->base == NULL)
|
|
return -ENOENT;
|
|
|
|
if (obj->base.size < width * height * 4) {
|
|
DRM_ERROR("buffer is to small\n");
|
|
ret = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/* we only need to pin inside GTT if cursor is non-phy */
|
|
mutex_lock(&dev->struct_mutex);
|
|
if (!dev_priv->info->cursor_needs_physical) {
|
|
if (obj->tiling_mode) {
|
|
DRM_ERROR("cursor cannot be tiled\n");
|
|
ret = -EINVAL;
|
|
goto fail_locked;
|
|
}
|
|
|
|
ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("failed to move cursor bo into the GTT\n");
|
|
goto fail_locked;
|
|
}
|
|
|
|
ret = i915_gem_object_put_fence(obj);
|
|
if (ret) {
|
|
DRM_ERROR("failed to release fence for cursor");
|
|
goto fail_unpin;
|
|
}
|
|
|
|
addr = obj->gtt_offset;
|
|
} else {
|
|
int align = IS_I830(dev) ? 16 * 1024 : 256;
|
|
ret = i915_gem_attach_phys_object(dev, obj,
|
|
(intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
|
|
align);
|
|
if (ret) {
|
|
DRM_ERROR("failed to attach phys object\n");
|
|
goto fail_locked;
|
|
}
|
|
addr = obj->phys_obj->handle->busaddr;
|
|
}
|
|
|
|
if (IS_GEN2(dev))
|
|
I915_WRITE(CURSIZE, (height << 12) | width);
|
|
|
|
finish:
|
|
if (intel_crtc->cursor_bo) {
|
|
if (dev_priv->info->cursor_needs_physical) {
|
|
if (intel_crtc->cursor_bo != obj)
|
|
i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
|
|
} else
|
|
i915_gem_object_unpin(intel_crtc->cursor_bo);
|
|
drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
|
|
}
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
intel_crtc->cursor_addr = addr;
|
|
intel_crtc->cursor_bo = obj;
|
|
intel_crtc->cursor_width = width;
|
|
intel_crtc->cursor_height = height;
|
|
|
|
intel_crtc_update_cursor(crtc, true);
|
|
|
|
return 0;
|
|
fail_unpin:
|
|
i915_gem_object_unpin(obj);
|
|
fail_locked:
|
|
mutex_unlock(&dev->struct_mutex);
|
|
fail:
|
|
drm_gem_object_unreference_unlocked(&obj->base);
|
|
return ret;
|
|
}
|
|
|
|
static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
|
|
{
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
|
|
intel_crtc->cursor_x = x;
|
|
intel_crtc->cursor_y = y;
|
|
|
|
intel_crtc_update_cursor(crtc, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Sets the color ramps on behalf of RandR */
|
|
void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
|
|
u16 blue, int regno)
|
|
{
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
|
|
intel_crtc->lut_r[regno] = red >> 8;
|
|
intel_crtc->lut_g[regno] = green >> 8;
|
|
intel_crtc->lut_b[regno] = blue >> 8;
|
|
}
|
|
|
|
void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
|
|
u16 *blue, int regno)
|
|
{
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
|
|
*red = intel_crtc->lut_r[regno] << 8;
|
|
*green = intel_crtc->lut_g[regno] << 8;
|
|
*blue = intel_crtc->lut_b[regno] << 8;
|
|
}
|
|
|
|
static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
|
|
u16 *blue, uint32_t start, uint32_t size)
|
|
{
|
|
int end = (start + size > 256) ? 256 : start + size, i;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
|
|
for (i = start; i < end; i++) {
|
|
intel_crtc->lut_r[i] = red[i] >> 8;
|
|
intel_crtc->lut_g[i] = green[i] >> 8;
|
|
intel_crtc->lut_b[i] = blue[i] >> 8;
|
|
}
|
|
|
|
intel_crtc_load_lut(crtc);
|
|
}
|
|
|
|
/**
|
|
* Get a pipe with a simple mode set on it for doing load-based monitor
|
|
* detection.
|
|
*
|
|
* It will be up to the load-detect code to adjust the pipe as appropriate for
|
|
* its requirements. The pipe will be connected to no other encoders.
|
|
*
|
|
* Currently this code will only succeed if there is a pipe with no encoders
|
|
* configured for it. In the future, it could choose to temporarily disable
|
|
* some outputs to free up a pipe for its use.
|
|
*
|
|
* \return crtc, or NULL if no pipes are available.
|
|
*/
|
|
|
|
/* VESA 640x480x72Hz mode to set on the pipe */
|
|
static struct drm_display_mode load_detect_mode = {
|
|
DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
|
|
704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
|
|
};
|
|
|
|
static struct drm_framebuffer *
|
|
intel_framebuffer_create(struct drm_device *dev,
|
|
struct drm_mode_fb_cmd *mode_cmd,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
struct intel_framebuffer *intel_fb;
|
|
int ret;
|
|
|
|
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
|
|
if (!intel_fb) {
|
|
drm_gem_object_unreference_unlocked(&obj->base);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
|
|
if (ret) {
|
|
drm_gem_object_unreference_unlocked(&obj->base);
|
|
kfree(intel_fb);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
return &intel_fb->base;
|
|
}
|
|
|
|
static u32
|
|
intel_framebuffer_pitch_for_width(int width, int bpp)
|
|
{
|
|
u32 pitch = DIV_ROUND_UP(width * bpp, 8);
|
|
return ALIGN(pitch, 64);
|
|
}
|
|
|
|
static u32
|
|
intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
|
|
{
|
|
u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
|
|
return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
|
|
}
|
|
|
|
static struct drm_framebuffer *
|
|
intel_framebuffer_create_for_mode(struct drm_device *dev,
|
|
struct drm_display_mode *mode,
|
|
int depth, int bpp)
|
|
{
|
|
struct drm_i915_gem_object *obj;
|
|
struct drm_mode_fb_cmd mode_cmd;
|
|
|
|
obj = i915_gem_alloc_object(dev,
|
|
intel_framebuffer_size_for_mode(mode, bpp));
|
|
if (obj == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
mode_cmd.width = mode->hdisplay;
|
|
mode_cmd.height = mode->vdisplay;
|
|
mode_cmd.depth = depth;
|
|
mode_cmd.bpp = bpp;
|
|
mode_cmd.pitch = intel_framebuffer_pitch_for_width(mode_cmd.width, bpp);
|
|
|
|
return intel_framebuffer_create(dev, &mode_cmd, obj);
|
|
}
|
|
|
|
static struct drm_framebuffer *
|
|
mode_fits_in_fbdev(struct drm_device *dev,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_i915_gem_object *obj;
|
|
struct drm_framebuffer *fb;
|
|
|
|
if (dev_priv->fbdev == NULL)
|
|
return NULL;
|
|
|
|
obj = dev_priv->fbdev->ifb.obj;
|
|
if (obj == NULL)
|
|
return NULL;
|
|
|
|
fb = &dev_priv->fbdev->ifb.base;
|
|
if (fb->pitch < intel_framebuffer_pitch_for_width(mode->hdisplay,
|
|
fb->bits_per_pixel))
|
|
return NULL;
|
|
|
|
if (obj->base.size < mode->vdisplay * fb->pitch)
|
|
return NULL;
|
|
|
|
return fb;
|
|
}
|
|
|
|
bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
|
|
struct drm_connector *connector,
|
|
struct drm_display_mode *mode,
|
|
struct intel_load_detect_pipe *old)
|
|
{
|
|
struct intel_crtc *intel_crtc;
|
|
struct drm_crtc *possible_crtc;
|
|
struct drm_encoder *encoder = &intel_encoder->base;
|
|
struct drm_crtc *crtc = NULL;
|
|
struct drm_device *dev = encoder->dev;
|
|
struct drm_framebuffer *old_fb;
|
|
int i = -1;
|
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
|
|
connector->base.id, drm_get_connector_name(connector),
|
|
encoder->base.id, drm_get_encoder_name(encoder));
|
|
|
|
/*
|
|
* Algorithm gets a little messy:
|
|
*
|
|
* - if the connector already has an assigned crtc, use it (but make
|
|
* sure it's on first)
|
|
*
|
|
* - try to find the first unused crtc that can drive this connector,
|
|
* and use that if we find one
|
|
*/
|
|
|
|
/* See if we already have a CRTC for this connector */
|
|
if (encoder->crtc) {
|
|
crtc = encoder->crtc;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
old->dpms_mode = intel_crtc->dpms_mode;
|
|
old->load_detect_temp = false;
|
|
|
|
/* Make sure the crtc and connector are running */
|
|
if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
|
|
|
crtc_funcs = crtc->helper_private;
|
|
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Find an unused one (if possible) */
|
|
list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
|
|
i++;
|
|
if (!(encoder->possible_crtcs & (1 << i)))
|
|
continue;
|
|
if (!possible_crtc->enabled) {
|
|
crtc = possible_crtc;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we didn't find an unused CRTC, don't use any.
|
|
*/
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("no pipe available for load-detect\n");
|
|
return false;
|
|
}
|
|
|
|
encoder->crtc = crtc;
|
|
connector->encoder = encoder;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
old->dpms_mode = intel_crtc->dpms_mode;
|
|
old->load_detect_temp = true;
|
|
old->release_fb = NULL;
|
|
|
|
if (!mode)
|
|
mode = &load_detect_mode;
|
|
|
|
old_fb = crtc->fb;
|
|
|
|
/* We need a framebuffer large enough to accommodate all accesses
|
|
* that the plane may generate whilst we perform load detection.
|
|
* We can not rely on the fbcon either being present (we get called
|
|
* during its initialisation to detect all boot displays, or it may
|
|
* not even exist) or that it is large enough to satisfy the
|
|
* requested mode.
|
|
*/
|
|
crtc->fb = mode_fits_in_fbdev(dev, mode);
|
|
if (crtc->fb == NULL) {
|
|
DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
|
|
crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
|
|
old->release_fb = crtc->fb;
|
|
} else
|
|
DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
|
|
if (IS_ERR(crtc->fb)) {
|
|
DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
|
|
crtc->fb = old_fb;
|
|
return false;
|
|
}
|
|
|
|
if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
|
|
DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
|
|
if (old->release_fb)
|
|
old->release_fb->funcs->destroy(old->release_fb);
|
|
crtc->fb = old_fb;
|
|
return false;
|
|
}
|
|
|
|
/* let the connector get through one full cycle before testing */
|
|
intel_wait_for_vblank(dev, intel_crtc->pipe);
|
|
|
|
return true;
|
|
}
|
|
|
|
void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
|
|
struct drm_connector *connector,
|
|
struct intel_load_detect_pipe *old)
|
|
{
|
|
struct drm_encoder *encoder = &intel_encoder->base;
|
|
struct drm_device *dev = encoder->dev;
|
|
struct drm_crtc *crtc = encoder->crtc;
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
|
|
connector->base.id, drm_get_connector_name(connector),
|
|
encoder->base.id, drm_get_encoder_name(encoder));
|
|
|
|
if (old->load_detect_temp) {
|
|
connector->encoder = NULL;
|
|
drm_helper_disable_unused_functions(dev);
|
|
|
|
if (old->release_fb)
|
|
old->release_fb->funcs->destroy(old->release_fb);
|
|
|
|
return;
|
|
}
|
|
|
|
/* Switch crtc and encoder back off if necessary */
|
|
if (old->dpms_mode != DRM_MODE_DPMS_ON) {
|
|
encoder_funcs->dpms(encoder, old->dpms_mode);
|
|
crtc_funcs->dpms(crtc, old->dpms_mode);
|
|
}
|
|
}
|
|
|
|
/* Returns the clock of the currently programmed mode of the given pipe. */
|
|
static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
u32 dpll = I915_READ(DPLL(pipe));
|
|
u32 fp;
|
|
intel_clock_t clock;
|
|
|
|
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
|
|
fp = I915_READ(FP0(pipe));
|
|
else
|
|
fp = I915_READ(FP1(pipe));
|
|
|
|
clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
|
|
if (IS_PINEVIEW(dev)) {
|
|
clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
|
|
clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
|
|
} else {
|
|
clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
|
|
clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
|
|
}
|
|
|
|
if (!IS_GEN2(dev)) {
|
|
if (IS_PINEVIEW(dev))
|
|
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
|
|
DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
|
|
else
|
|
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
|
|
DPLL_FPA01_P1_POST_DIV_SHIFT);
|
|
|
|
switch (dpll & DPLL_MODE_MASK) {
|
|
case DPLLB_MODE_DAC_SERIAL:
|
|
clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
|
|
5 : 10;
|
|
break;
|
|
case DPLLB_MODE_LVDS:
|
|
clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
|
|
7 : 14;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
|
|
"mode\n", (int)(dpll & DPLL_MODE_MASK));
|
|
return 0;
|
|
}
|
|
|
|
/* XXX: Handle the 100Mhz refclk */
|
|
intel_clock(dev, 96000, &clock);
|
|
} else {
|
|
bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
|
|
|
|
if (is_lvds) {
|
|
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
|
|
DPLL_FPA01_P1_POST_DIV_SHIFT);
|
|
clock.p2 = 14;
|
|
|
|
if ((dpll & PLL_REF_INPUT_MASK) ==
|
|
PLLB_REF_INPUT_SPREADSPECTRUMIN) {
|
|
/* XXX: might not be 66MHz */
|
|
intel_clock(dev, 66000, &clock);
|
|
} else
|
|
intel_clock(dev, 48000, &clock);
|
|
} else {
|
|
if (dpll & PLL_P1_DIVIDE_BY_TWO)
|
|
clock.p1 = 2;
|
|
else {
|
|
clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
|
|
DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
|
|
}
|
|
if (dpll & PLL_P2_DIVIDE_BY_4)
|
|
clock.p2 = 4;
|
|
else
|
|
clock.p2 = 2;
|
|
|
|
intel_clock(dev, 48000, &clock);
|
|
}
|
|
}
|
|
|
|
/* XXX: It would be nice to validate the clocks, but we can't reuse
|
|
* i830PllIsValid() because it relies on the xf86_config connector
|
|
* configuration being accurate, which it isn't necessarily.
|
|
*/
|
|
|
|
return clock.dot;
|
|
}
|
|
|
|
/** Returns the currently programmed mode of the given pipe. */
|
|
struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
|
|
struct drm_crtc *crtc)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
struct drm_display_mode *mode;
|
|
int htot = I915_READ(HTOTAL(pipe));
|
|
int hsync = I915_READ(HSYNC(pipe));
|
|
int vtot = I915_READ(VTOTAL(pipe));
|
|
int vsync = I915_READ(VSYNC(pipe));
|
|
|
|
mode = kzalloc(sizeof(*mode), GFP_KERNEL);
|
|
if (!mode)
|
|
return NULL;
|
|
|
|
mode->clock = intel_crtc_clock_get(dev, crtc);
|
|
mode->hdisplay = (htot & 0xffff) + 1;
|
|
mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
|
|
mode->hsync_start = (hsync & 0xffff) + 1;
|
|
mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
|
|
mode->vdisplay = (vtot & 0xffff) + 1;
|
|
mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
|
|
mode->vsync_start = (vsync & 0xffff) + 1;
|
|
mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
|
|
|
|
drm_mode_set_name(mode);
|
|
drm_mode_set_crtcinfo(mode, 0);
|
|
|
|
return mode;
|
|
}
|
|
|
|
#define GPU_IDLE_TIMEOUT 500 /* ms */
|
|
|
|
/* When this timer fires, we've been idle for awhile */
|
|
static void intel_gpu_idle_timer(unsigned long arg)
|
|
{
|
|
struct drm_device *dev = (struct drm_device *)arg;
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
|
|
if (!list_empty(&dev_priv->mm.active_list)) {
|
|
/* Still processing requests, so just re-arm the timer. */
|
|
mod_timer(&dev_priv->idle_timer, jiffies +
|
|
msecs_to_jiffies(GPU_IDLE_TIMEOUT));
|
|
return;
|
|
}
|
|
|
|
dev_priv->busy = false;
|
|
queue_work(dev_priv->wq, &dev_priv->idle_work);
|
|
}
|
|
|
|
#define CRTC_IDLE_TIMEOUT 1000 /* ms */
|
|
|
|
static void intel_crtc_idle_timer(unsigned long arg)
|
|
{
|
|
struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
|
|
struct drm_crtc *crtc = &intel_crtc->base;
|
|
drm_i915_private_t *dev_priv = crtc->dev->dev_private;
|
|
struct intel_framebuffer *intel_fb;
|
|
|
|
intel_fb = to_intel_framebuffer(crtc->fb);
|
|
if (intel_fb && intel_fb->obj->active) {
|
|
/* The framebuffer is still being accessed by the GPU. */
|
|
mod_timer(&intel_crtc->idle_timer, jiffies +
|
|
msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
|
|
return;
|
|
}
|
|
|
|
intel_crtc->busy = false;
|
|
queue_work(dev_priv->wq, &dev_priv->idle_work);
|
|
}
|
|
|
|
static void intel_increase_pllclock(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int dpll_reg = DPLL(pipe);
|
|
int dpll;
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
return;
|
|
|
|
if (!dev_priv->lvds_downclock_avail)
|
|
return;
|
|
|
|
dpll = I915_READ(dpll_reg);
|
|
if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
|
|
DRM_DEBUG_DRIVER("upclocking LVDS\n");
|
|
|
|
/* Unlock panel regs */
|
|
I915_WRITE(PP_CONTROL,
|
|
I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
|
|
|
|
dpll &= ~DISPLAY_RATE_SELECT_FPA1;
|
|
I915_WRITE(dpll_reg, dpll);
|
|
intel_wait_for_vblank(dev, pipe);
|
|
|
|
dpll = I915_READ(dpll_reg);
|
|
if (dpll & DISPLAY_RATE_SELECT_FPA1)
|
|
DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
|
|
|
|
/* ...and lock them again */
|
|
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
|
|
}
|
|
|
|
/* Schedule downclock */
|
|
mod_timer(&intel_crtc->idle_timer, jiffies +
|
|
msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
|
|
}
|
|
|
|
static void intel_decrease_pllclock(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
int pipe = intel_crtc->pipe;
|
|
int dpll_reg = DPLL(pipe);
|
|
int dpll = I915_READ(dpll_reg);
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
return;
|
|
|
|
if (!dev_priv->lvds_downclock_avail)
|
|
return;
|
|
|
|
/*
|
|
* Since this is called by a timer, we should never get here in
|
|
* the manual case.
|
|
*/
|
|
if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
|
|
DRM_DEBUG_DRIVER("downclocking LVDS\n");
|
|
|
|
/* Unlock panel regs */
|
|
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) |
|
|
PANEL_UNLOCK_REGS);
|
|
|
|
dpll |= DISPLAY_RATE_SELECT_FPA1;
|
|
I915_WRITE(dpll_reg, dpll);
|
|
intel_wait_for_vblank(dev, pipe);
|
|
dpll = I915_READ(dpll_reg);
|
|
if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
|
|
DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
|
|
|
|
/* ...and lock them again */
|
|
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* intel_idle_update - adjust clocks for idleness
|
|
* @work: work struct
|
|
*
|
|
* Either the GPU or display (or both) went idle. Check the busy status
|
|
* here and adjust the CRTC and GPU clocks as necessary.
|
|
*/
|
|
static void intel_idle_update(struct work_struct *work)
|
|
{
|
|
drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
|
|
idle_work);
|
|
struct drm_device *dev = dev_priv->dev;
|
|
struct drm_crtc *crtc;
|
|
struct intel_crtc *intel_crtc;
|
|
|
|
if (!i915_powersave)
|
|
return;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
i915_update_gfx_val(dev_priv);
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
/* Skip inactive CRTCs */
|
|
if (!crtc->fb)
|
|
continue;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
if (!intel_crtc->busy)
|
|
intel_decrease_pllclock(crtc);
|
|
}
|
|
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
/**
|
|
* intel_mark_busy - mark the GPU and possibly the display busy
|
|
* @dev: drm device
|
|
* @obj: object we're operating on
|
|
*
|
|
* Callers can use this function to indicate that the GPU is busy processing
|
|
* commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
|
|
* buffer), we'll also mark the display as busy, so we know to increase its
|
|
* clock frequency.
|
|
*/
|
|
void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc = NULL;
|
|
struct intel_framebuffer *intel_fb;
|
|
struct intel_crtc *intel_crtc;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return;
|
|
|
|
if (!dev_priv->busy)
|
|
dev_priv->busy = true;
|
|
else
|
|
mod_timer(&dev_priv->idle_timer, jiffies +
|
|
msecs_to_jiffies(GPU_IDLE_TIMEOUT));
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
if (!crtc->fb)
|
|
continue;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
intel_fb = to_intel_framebuffer(crtc->fb);
|
|
if (intel_fb->obj == obj) {
|
|
if (!intel_crtc->busy) {
|
|
/* Non-busy -> busy, upclock */
|
|
intel_increase_pllclock(crtc);
|
|
intel_crtc->busy = true;
|
|
} else {
|
|
/* Busy -> busy, put off timer */
|
|
mod_timer(&intel_crtc->idle_timer, jiffies +
|
|
msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void intel_crtc_destroy(struct drm_crtc *crtc)
|
|
{
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
struct drm_device *dev = crtc->dev;
|
|
struct intel_unpin_work *work;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
work = intel_crtc->unpin_work;
|
|
intel_crtc->unpin_work = NULL;
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
if (work) {
|
|
cancel_work_sync(&work->work);
|
|
kfree(work);
|
|
}
|
|
|
|
drm_crtc_cleanup(crtc);
|
|
|
|
kfree(intel_crtc);
|
|
}
|
|
|
|
static void intel_unpin_work_fn(struct work_struct *__work)
|
|
{
|
|
struct intel_unpin_work *work =
|
|
container_of(__work, struct intel_unpin_work, work);
|
|
|
|
mutex_lock(&work->dev->struct_mutex);
|
|
i915_gem_object_unpin(work->old_fb_obj);
|
|
drm_gem_object_unreference(&work->pending_flip_obj->base);
|
|
drm_gem_object_unreference(&work->old_fb_obj->base);
|
|
|
|
mutex_unlock(&work->dev->struct_mutex);
|
|
kfree(work);
|
|
}
|
|
|
|
static void do_intel_finish_page_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
struct intel_unpin_work *work;
|
|
struct drm_i915_gem_object *obj;
|
|
struct drm_pending_vblank_event *e;
|
|
struct timeval tnow, tvbl;
|
|
unsigned long flags;
|
|
|
|
/* Ignore early vblank irqs */
|
|
if (intel_crtc == NULL)
|
|
return;
|
|
|
|
do_gettimeofday(&tnow);
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
work = intel_crtc->unpin_work;
|
|
if (work == NULL || !work->pending) {
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
return;
|
|
}
|
|
|
|
intel_crtc->unpin_work = NULL;
|
|
|
|
if (work->event) {
|
|
e = work->event;
|
|
e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
|
|
|
|
/* Called before vblank count and timestamps have
|
|
* been updated for the vblank interval of flip
|
|
* completion? Need to increment vblank count and
|
|
* add one videorefresh duration to returned timestamp
|
|
* to account for this. We assume this happened if we
|
|
* get called over 0.9 frame durations after the last
|
|
* timestamped vblank.
|
|
*
|
|
* This calculation can not be used with vrefresh rates
|
|
* below 5Hz (10Hz to be on the safe side) without
|
|
* promoting to 64 integers.
|
|
*/
|
|
if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
|
|
9 * crtc->framedur_ns) {
|
|
e->event.sequence++;
|
|
tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
|
|
crtc->framedur_ns);
|
|
}
|
|
|
|
e->event.tv_sec = tvbl.tv_sec;
|
|
e->event.tv_usec = tvbl.tv_usec;
|
|
|
|
list_add_tail(&e->base.link,
|
|
&e->base.file_priv->event_list);
|
|
wake_up_interruptible(&e->base.file_priv->event_wait);
|
|
}
|
|
|
|
drm_vblank_put(dev, intel_crtc->pipe);
|
|
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
obj = work->old_fb_obj;
|
|
|
|
atomic_clear_mask(1 << intel_crtc->plane,
|
|
&obj->pending_flip.counter);
|
|
if (atomic_read(&obj->pending_flip) == 0)
|
|
wake_up(&dev_priv->pending_flip_queue);
|
|
|
|
schedule_work(&work->work);
|
|
|
|
trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
|
|
}
|
|
|
|
void intel_finish_page_flip(struct drm_device *dev, int pipe)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
|
|
|
|
do_intel_finish_page_flip(dev, crtc);
|
|
}
|
|
|
|
void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
|
|
|
|
do_intel_finish_page_flip(dev, crtc);
|
|
}
|
|
|
|
void intel_prepare_page_flip(struct drm_device *dev, int plane)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc =
|
|
to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
if (intel_crtc->unpin_work) {
|
|
if ((++intel_crtc->unpin_work->pending) > 1)
|
|
DRM_ERROR("Prepared flip multiple times\n");
|
|
} else {
|
|
DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
|
|
}
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
}
|
|
|
|
static int intel_gen2_queue_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
unsigned long offset;
|
|
u32 flip_mask;
|
|
int ret;
|
|
|
|
ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Offset into the new buffer for cases of shared fbs between CRTCs */
|
|
offset = crtc->y * fb->pitch + crtc->x * fb->bits_per_pixel/8;
|
|
|
|
ret = BEGIN_LP_RING(6);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Can't queue multiple flips, so wait for the previous
|
|
* one to finish before executing the next.
|
|
*/
|
|
if (intel_crtc->plane)
|
|
flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
|
|
else
|
|
flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
|
|
OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
|
|
OUT_RING(MI_NOOP);
|
|
OUT_RING(MI_DISPLAY_FLIP |
|
|
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
|
|
OUT_RING(fb->pitch);
|
|
OUT_RING(obj->gtt_offset + offset);
|
|
OUT_RING(MI_NOOP);
|
|
ADVANCE_LP_RING();
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int intel_gen3_queue_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
unsigned long offset;
|
|
u32 flip_mask;
|
|
int ret;
|
|
|
|
ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Offset into the new buffer for cases of shared fbs between CRTCs */
|
|
offset = crtc->y * fb->pitch + crtc->x * fb->bits_per_pixel/8;
|
|
|
|
ret = BEGIN_LP_RING(6);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (intel_crtc->plane)
|
|
flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
|
|
else
|
|
flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
|
|
OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
|
|
OUT_RING(MI_NOOP);
|
|
OUT_RING(MI_DISPLAY_FLIP_I915 |
|
|
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
|
|
OUT_RING(fb->pitch);
|
|
OUT_RING(obj->gtt_offset + offset);
|
|
OUT_RING(MI_NOOP);
|
|
|
|
ADVANCE_LP_RING();
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int intel_gen4_queue_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
uint32_t pf, pipesrc;
|
|
int ret;
|
|
|
|
ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = BEGIN_LP_RING(4);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* i965+ uses the linear or tiled offsets from the
|
|
* Display Registers (which do not change across a page-flip)
|
|
* so we need only reprogram the base address.
|
|
*/
|
|
OUT_RING(MI_DISPLAY_FLIP |
|
|
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
|
|
OUT_RING(fb->pitch);
|
|
OUT_RING(obj->gtt_offset | obj->tiling_mode);
|
|
|
|
/* XXX Enabling the panel-fitter across page-flip is so far
|
|
* untested on non-native modes, so ignore it for now.
|
|
* pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
|
|
*/
|
|
pf = 0;
|
|
pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
|
|
OUT_RING(pf | pipesrc);
|
|
ADVANCE_LP_RING();
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int intel_gen6_queue_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
uint32_t pf, pipesrc;
|
|
int ret;
|
|
|
|
ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = BEGIN_LP_RING(4);
|
|
if (ret)
|
|
goto out;
|
|
|
|
OUT_RING(MI_DISPLAY_FLIP |
|
|
MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
|
|
OUT_RING(fb->pitch | obj->tiling_mode);
|
|
OUT_RING(obj->gtt_offset);
|
|
|
|
pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
|
|
pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
|
|
OUT_RING(pf | pipesrc);
|
|
ADVANCE_LP_RING();
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* On gen7 we currently use the blit ring because (in early silicon at least)
|
|
* the render ring doesn't give us interrpts for page flip completion, which
|
|
* means clients will hang after the first flip is queued. Fortunately the
|
|
* blit ring generates interrupts properly, so use it instead.
|
|
*/
|
|
static int intel_gen7_queue_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
|
|
int ret;
|
|
|
|
ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = intel_ring_begin(ring, 4);
|
|
if (ret)
|
|
goto out;
|
|
|
|
intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
|
|
intel_ring_emit(ring, (fb->pitch | obj->tiling_mode));
|
|
intel_ring_emit(ring, (obj->gtt_offset));
|
|
intel_ring_emit(ring, (MI_NOOP));
|
|
intel_ring_advance(ring);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int intel_default_queue_flip(struct drm_device *dev,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int intel_crtc_page_flip(struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_pending_vblank_event *event)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_framebuffer *intel_fb;
|
|
struct drm_i915_gem_object *obj;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
struct intel_unpin_work *work;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
work = kzalloc(sizeof *work, GFP_KERNEL);
|
|
if (work == NULL)
|
|
return -ENOMEM;
|
|
|
|
work->event = event;
|
|
work->dev = crtc->dev;
|
|
intel_fb = to_intel_framebuffer(crtc->fb);
|
|
work->old_fb_obj = intel_fb->obj;
|
|
INIT_WORK(&work->work, intel_unpin_work_fn);
|
|
|
|
/* We borrow the event spin lock for protecting unpin_work */
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
if (intel_crtc->unpin_work) {
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
kfree(work);
|
|
|
|
DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
|
|
return -EBUSY;
|
|
}
|
|
intel_crtc->unpin_work = work;
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
intel_fb = to_intel_framebuffer(fb);
|
|
obj = intel_fb->obj;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
/* Reference the objects for the scheduled work. */
|
|
drm_gem_object_reference(&work->old_fb_obj->base);
|
|
drm_gem_object_reference(&obj->base);
|
|
|
|
crtc->fb = fb;
|
|
|
|
ret = drm_vblank_get(dev, intel_crtc->pipe);
|
|
if (ret)
|
|
goto cleanup_objs;
|
|
|
|
work->pending_flip_obj = obj;
|
|
|
|
work->enable_stall_check = true;
|
|
|
|
/* Block clients from rendering to the new back buffer until
|
|
* the flip occurs and the object is no longer visible.
|
|
*/
|
|
atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
|
|
|
|
ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
|
|
if (ret)
|
|
goto cleanup_pending;
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
trace_i915_flip_request(intel_crtc->plane, obj);
|
|
|
|
return 0;
|
|
|
|
cleanup_pending:
|
|
atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
|
|
cleanup_objs:
|
|
drm_gem_object_unreference(&work->old_fb_obj->base);
|
|
drm_gem_object_unreference(&obj->base);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
spin_lock_irqsave(&dev->event_lock, flags);
|
|
intel_crtc->unpin_work = NULL;
|
|
spin_unlock_irqrestore(&dev->event_lock, flags);
|
|
|
|
kfree(work);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void intel_sanitize_modesetting(struct drm_device *dev,
|
|
int pipe, int plane)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 reg, val;
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
return;
|
|
|
|
/* Who knows what state these registers were left in by the BIOS or
|
|
* grub?
|
|
*
|
|
* If we leave the registers in a conflicting state (e.g. with the
|
|
* display plane reading from the other pipe than the one we intend
|
|
* to use) then when we attempt to teardown the active mode, we will
|
|
* not disable the pipes and planes in the correct order -- leaving
|
|
* a plane reading from a disabled pipe and possibly leading to
|
|
* undefined behaviour.
|
|
*/
|
|
|
|
reg = DSPCNTR(plane);
|
|
val = I915_READ(reg);
|
|
|
|
if ((val & DISPLAY_PLANE_ENABLE) == 0)
|
|
return;
|
|
if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
|
|
return;
|
|
|
|
/* This display plane is active and attached to the other CPU pipe. */
|
|
pipe = !pipe;
|
|
|
|
/* Disable the plane and wait for it to stop reading from the pipe. */
|
|
intel_disable_plane(dev_priv, plane, pipe);
|
|
intel_disable_pipe(dev_priv, pipe);
|
|
}
|
|
|
|
static void intel_crtc_reset(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
|
|
/* Reset flags back to the 'unknown' status so that they
|
|
* will be correctly set on the initial modeset.
|
|
*/
|
|
intel_crtc->dpms_mode = -1;
|
|
|
|
/* We need to fix up any BIOS configuration that conflicts with
|
|
* our expectations.
|
|
*/
|
|
intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
|
|
}
|
|
|
|
static struct drm_crtc_helper_funcs intel_helper_funcs = {
|
|
.dpms = intel_crtc_dpms,
|
|
.mode_fixup = intel_crtc_mode_fixup,
|
|
.mode_set = intel_crtc_mode_set,
|
|
.mode_set_base = intel_pipe_set_base,
|
|
.mode_set_base_atomic = intel_pipe_set_base_atomic,
|
|
.load_lut = intel_crtc_load_lut,
|
|
.disable = intel_crtc_disable,
|
|
};
|
|
|
|
static const struct drm_crtc_funcs intel_crtc_funcs = {
|
|
.reset = intel_crtc_reset,
|
|
.cursor_set = intel_crtc_cursor_set,
|
|
.cursor_move = intel_crtc_cursor_move,
|
|
.gamma_set = intel_crtc_gamma_set,
|
|
.set_config = drm_crtc_helper_set_config,
|
|
.destroy = intel_crtc_destroy,
|
|
.page_flip = intel_crtc_page_flip,
|
|
};
|
|
|
|
static void intel_crtc_init(struct drm_device *dev, int pipe)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct intel_crtc *intel_crtc;
|
|
int i;
|
|
|
|
intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
|
|
if (intel_crtc == NULL)
|
|
return;
|
|
|
|
drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
|
|
|
|
drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
|
|
for (i = 0; i < 256; i++) {
|
|
intel_crtc->lut_r[i] = i;
|
|
intel_crtc->lut_g[i] = i;
|
|
intel_crtc->lut_b[i] = i;
|
|
}
|
|
|
|
/* Swap pipes & planes for FBC on pre-965 */
|
|
intel_crtc->pipe = pipe;
|
|
intel_crtc->plane = pipe;
|
|
if (IS_MOBILE(dev) && IS_GEN3(dev)) {
|
|
DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
|
|
intel_crtc->plane = !pipe;
|
|
}
|
|
|
|
BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
|
|
dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
|
|
dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
|
|
dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
|
|
|
|
intel_crtc_reset(&intel_crtc->base);
|
|
intel_crtc->active = true; /* force the pipe off on setup_init_config */
|
|
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
intel_helper_funcs.prepare = ironlake_crtc_prepare;
|
|
intel_helper_funcs.commit = ironlake_crtc_commit;
|
|
} else {
|
|
intel_helper_funcs.prepare = i9xx_crtc_prepare;
|
|
intel_helper_funcs.commit = i9xx_crtc_commit;
|
|
}
|
|
|
|
drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
|
|
|
|
intel_crtc->busy = false;
|
|
|
|
setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
|
|
(unsigned long)intel_crtc);
|
|
}
|
|
|
|
int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
|
|
struct drm_mode_object *drmmode_obj;
|
|
struct intel_crtc *crtc;
|
|
|
|
if (!dev_priv) {
|
|
DRM_ERROR("called with no initialization\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
|
|
DRM_MODE_OBJECT_CRTC);
|
|
|
|
if (!drmmode_obj) {
|
|
DRM_ERROR("no such CRTC id\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
|
|
pipe_from_crtc_id->pipe = crtc->pipe;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int intel_encoder_clones(struct drm_device *dev, int type_mask)
|
|
{
|
|
struct intel_encoder *encoder;
|
|
int index_mask = 0;
|
|
int entry = 0;
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
|
|
if (type_mask & encoder->clone_mask)
|
|
index_mask |= (1 << entry);
|
|
entry++;
|
|
}
|
|
|
|
return index_mask;
|
|
}
|
|
|
|
static bool has_edp_a(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (!IS_MOBILE(dev))
|
|
return false;
|
|
|
|
if ((I915_READ(DP_A) & DP_DETECTED) == 0)
|
|
return false;
|
|
|
|
if (IS_GEN5(dev) &&
|
|
(I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void intel_setup_outputs(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct intel_encoder *encoder;
|
|
bool dpd_is_edp = false;
|
|
bool has_lvds = false;
|
|
|
|
if (IS_MOBILE(dev) && !IS_I830(dev))
|
|
has_lvds = intel_lvds_init(dev);
|
|
if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
|
|
/* disable the panel fitter on everything but LVDS */
|
|
I915_WRITE(PFIT_CONTROL, 0);
|
|
}
|
|
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
dpd_is_edp = intel_dpd_is_edp(dev);
|
|
|
|
if (has_edp_a(dev))
|
|
intel_dp_init(dev, DP_A);
|
|
|
|
if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
|
|
intel_dp_init(dev, PCH_DP_D);
|
|
}
|
|
|
|
intel_crt_init(dev);
|
|
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
int found;
|
|
|
|
if (I915_READ(HDMIB) & PORT_DETECTED) {
|
|
/* PCH SDVOB multiplex with HDMIB */
|
|
found = intel_sdvo_init(dev, PCH_SDVOB);
|
|
if (!found)
|
|
intel_hdmi_init(dev, HDMIB);
|
|
if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
|
|
intel_dp_init(dev, PCH_DP_B);
|
|
}
|
|
|
|
if (I915_READ(HDMIC) & PORT_DETECTED)
|
|
intel_hdmi_init(dev, HDMIC);
|
|
|
|
if (I915_READ(HDMID) & PORT_DETECTED)
|
|
intel_hdmi_init(dev, HDMID);
|
|
|
|
if (I915_READ(PCH_DP_C) & DP_DETECTED)
|
|
intel_dp_init(dev, PCH_DP_C);
|
|
|
|
if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
|
|
intel_dp_init(dev, PCH_DP_D);
|
|
|
|
} else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
|
|
bool found = false;
|
|
|
|
if (I915_READ(SDVOB) & SDVO_DETECTED) {
|
|
DRM_DEBUG_KMS("probing SDVOB\n");
|
|
found = intel_sdvo_init(dev, SDVOB);
|
|
if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
|
|
DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
|
|
intel_hdmi_init(dev, SDVOB);
|
|
}
|
|
|
|
if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
|
|
DRM_DEBUG_KMS("probing DP_B\n");
|
|
intel_dp_init(dev, DP_B);
|
|
}
|
|
}
|
|
|
|
/* Before G4X SDVOC doesn't have its own detect register */
|
|
|
|
if (I915_READ(SDVOB) & SDVO_DETECTED) {
|
|
DRM_DEBUG_KMS("probing SDVOC\n");
|
|
found = intel_sdvo_init(dev, SDVOC);
|
|
}
|
|
|
|
if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
|
|
|
|
if (SUPPORTS_INTEGRATED_HDMI(dev)) {
|
|
DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
|
|
intel_hdmi_init(dev, SDVOC);
|
|
}
|
|
if (SUPPORTS_INTEGRATED_DP(dev)) {
|
|
DRM_DEBUG_KMS("probing DP_C\n");
|
|
intel_dp_init(dev, DP_C);
|
|
}
|
|
}
|
|
|
|
if (SUPPORTS_INTEGRATED_DP(dev) &&
|
|
(I915_READ(DP_D) & DP_DETECTED)) {
|
|
DRM_DEBUG_KMS("probing DP_D\n");
|
|
intel_dp_init(dev, DP_D);
|
|
}
|
|
} else if (IS_GEN2(dev))
|
|
intel_dvo_init(dev);
|
|
|
|
if (SUPPORTS_TV(dev))
|
|
intel_tv_init(dev);
|
|
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
|
|
encoder->base.possible_crtcs = encoder->crtc_mask;
|
|
encoder->base.possible_clones =
|
|
intel_encoder_clones(dev, encoder->clone_mask);
|
|
}
|
|
|
|
intel_panel_setup_backlight(dev);
|
|
|
|
/* disable all the possible outputs/crtcs before entering KMS mode */
|
|
drm_helper_disable_unused_functions(dev);
|
|
}
|
|
|
|
static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
|
|
{
|
|
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
|
|
|
|
drm_framebuffer_cleanup(fb);
|
|
drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
|
|
|
|
kfree(intel_fb);
|
|
}
|
|
|
|
static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
|
|
struct drm_file *file,
|
|
unsigned int *handle)
|
|
{
|
|
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
|
|
struct drm_i915_gem_object *obj = intel_fb->obj;
|
|
|
|
return drm_gem_handle_create(file, &obj->base, handle);
|
|
}
|
|
|
|
static const struct drm_framebuffer_funcs intel_fb_funcs = {
|
|
.destroy = intel_user_framebuffer_destroy,
|
|
.create_handle = intel_user_framebuffer_create_handle,
|
|
};
|
|
|
|
int intel_framebuffer_init(struct drm_device *dev,
|
|
struct intel_framebuffer *intel_fb,
|
|
struct drm_mode_fb_cmd *mode_cmd,
|
|
struct drm_i915_gem_object *obj)
|
|
{
|
|
int ret;
|
|
|
|
if (obj->tiling_mode == I915_TILING_Y)
|
|
return -EINVAL;
|
|
|
|
if (mode_cmd->pitch & 63)
|
|
return -EINVAL;
|
|
|
|
switch (mode_cmd->bpp) {
|
|
case 8:
|
|
case 16:
|
|
case 24:
|
|
case 32:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
|
|
if (ret) {
|
|
DRM_ERROR("framebuffer init failed %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
|
|
intel_fb->obj = obj;
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_framebuffer *
|
|
intel_user_framebuffer_create(struct drm_device *dev,
|
|
struct drm_file *filp,
|
|
struct drm_mode_fb_cmd *mode_cmd)
|
|
{
|
|
struct drm_i915_gem_object *obj;
|
|
|
|
obj = to_intel_bo(drm_gem_object_lookup(dev, filp, mode_cmd->handle));
|
|
if (&obj->base == NULL)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
return intel_framebuffer_create(dev, mode_cmd, obj);
|
|
}
|
|
|
|
static const struct drm_mode_config_funcs intel_mode_funcs = {
|
|
.fb_create = intel_user_framebuffer_create,
|
|
.output_poll_changed = intel_fb_output_poll_changed,
|
|
};
|
|
|
|
static struct drm_i915_gem_object *
|
|
intel_alloc_context_page(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_gem_object *ctx;
|
|
int ret;
|
|
|
|
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
|
|
|
|
ctx = i915_gem_alloc_object(dev, 4096);
|
|
if (!ctx) {
|
|
DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
|
|
return NULL;
|
|
}
|
|
|
|
ret = i915_gem_object_pin(ctx, 4096, true);
|
|
if (ret) {
|
|
DRM_ERROR("failed to pin power context: %d\n", ret);
|
|
goto err_unref;
|
|
}
|
|
|
|
ret = i915_gem_object_set_to_gtt_domain(ctx, 1);
|
|
if (ret) {
|
|
DRM_ERROR("failed to set-domain on power context: %d\n", ret);
|
|
goto err_unpin;
|
|
}
|
|
|
|
return ctx;
|
|
|
|
err_unpin:
|
|
i915_gem_object_unpin(ctx);
|
|
err_unref:
|
|
drm_gem_object_unreference(&ctx->base);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return NULL;
|
|
}
|
|
|
|
bool ironlake_set_drps(struct drm_device *dev, u8 val)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u16 rgvswctl;
|
|
|
|
rgvswctl = I915_READ16(MEMSWCTL);
|
|
if (rgvswctl & MEMCTL_CMD_STS) {
|
|
DRM_DEBUG("gpu busy, RCS change rejected\n");
|
|
return false; /* still busy with another command */
|
|
}
|
|
|
|
rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
|
|
(val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
|
|
I915_WRITE16(MEMSWCTL, rgvswctl);
|
|
POSTING_READ16(MEMSWCTL);
|
|
|
|
rgvswctl |= MEMCTL_CMD_STS;
|
|
I915_WRITE16(MEMSWCTL, rgvswctl);
|
|
|
|
return true;
|
|
}
|
|
|
|
void ironlake_enable_drps(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 rgvmodectl = I915_READ(MEMMODECTL);
|
|
u8 fmax, fmin, fstart, vstart;
|
|
|
|
/* Enable temp reporting */
|
|
I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
|
|
I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
|
|
|
|
/* 100ms RC evaluation intervals */
|
|
I915_WRITE(RCUPEI, 100000);
|
|
I915_WRITE(RCDNEI, 100000);
|
|
|
|
/* Set max/min thresholds to 90ms and 80ms respectively */
|
|
I915_WRITE(RCBMAXAVG, 90000);
|
|
I915_WRITE(RCBMINAVG, 80000);
|
|
|
|
I915_WRITE(MEMIHYST, 1);
|
|
|
|
/* Set up min, max, and cur for interrupt handling */
|
|
fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
|
|
fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
|
|
fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
|
|
MEMMODE_FSTART_SHIFT;
|
|
|
|
vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
|
|
PXVFREQ_PX_SHIFT;
|
|
|
|
dev_priv->fmax = fmax; /* IPS callback will increase this */
|
|
dev_priv->fstart = fstart;
|
|
|
|
dev_priv->max_delay = fstart;
|
|
dev_priv->min_delay = fmin;
|
|
dev_priv->cur_delay = fstart;
|
|
|
|
DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
|
|
fmax, fmin, fstart);
|
|
|
|
I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
|
|
|
|
/*
|
|
* Interrupts will be enabled in ironlake_irq_postinstall
|
|
*/
|
|
|
|
I915_WRITE(VIDSTART, vstart);
|
|
POSTING_READ(VIDSTART);
|
|
|
|
rgvmodectl |= MEMMODE_SWMODE_EN;
|
|
I915_WRITE(MEMMODECTL, rgvmodectl);
|
|
|
|
if (wait_for((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10))
|
|
DRM_ERROR("stuck trying to change perf mode\n");
|
|
msleep(1);
|
|
|
|
ironlake_set_drps(dev, fstart);
|
|
|
|
dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
|
|
I915_READ(0x112e0);
|
|
dev_priv->last_time1 = jiffies_to_msecs(jiffies);
|
|
dev_priv->last_count2 = I915_READ(0x112f4);
|
|
getrawmonotonic(&dev_priv->last_time2);
|
|
}
|
|
|
|
void ironlake_disable_drps(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u16 rgvswctl = I915_READ16(MEMSWCTL);
|
|
|
|
/* Ack interrupts, disable EFC interrupt */
|
|
I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
|
|
I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
|
|
I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
|
|
I915_WRITE(DEIIR, DE_PCU_EVENT);
|
|
I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
|
|
|
|
/* Go back to the starting frequency */
|
|
ironlake_set_drps(dev, dev_priv->fstart);
|
|
msleep(1);
|
|
rgvswctl |= MEMCTL_CMD_STS;
|
|
I915_WRITE(MEMSWCTL, rgvswctl);
|
|
msleep(1);
|
|
|
|
}
|
|
|
|
void gen6_set_rps(struct drm_device *dev, u8 val)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 swreq;
|
|
|
|
swreq = (val & 0x3ff) << 25;
|
|
I915_WRITE(GEN6_RPNSWREQ, swreq);
|
|
}
|
|
|
|
void gen6_disable_rps(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
|
|
I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
|
|
I915_WRITE(GEN6_PMIER, 0);
|
|
|
|
spin_lock_irq(&dev_priv->rps_lock);
|
|
dev_priv->pm_iir = 0;
|
|
spin_unlock_irq(&dev_priv->rps_lock);
|
|
|
|
I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR));
|
|
}
|
|
|
|
static unsigned long intel_pxfreq(u32 vidfreq)
|
|
{
|
|
unsigned long freq;
|
|
int div = (vidfreq & 0x3f0000) >> 16;
|
|
int post = (vidfreq & 0x3000) >> 12;
|
|
int pre = (vidfreq & 0x7);
|
|
|
|
if (!pre)
|
|
return 0;
|
|
|
|
freq = ((div * 133333) / ((1<<post) * pre));
|
|
|
|
return freq;
|
|
}
|
|
|
|
void intel_init_emon(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 lcfuse;
|
|
u8 pxw[16];
|
|
int i;
|
|
|
|
/* Disable to program */
|
|
I915_WRITE(ECR, 0);
|
|
POSTING_READ(ECR);
|
|
|
|
/* Program energy weights for various events */
|
|
I915_WRITE(SDEW, 0x15040d00);
|
|
I915_WRITE(CSIEW0, 0x007f0000);
|
|
I915_WRITE(CSIEW1, 0x1e220004);
|
|
I915_WRITE(CSIEW2, 0x04000004);
|
|
|
|
for (i = 0; i < 5; i++)
|
|
I915_WRITE(PEW + (i * 4), 0);
|
|
for (i = 0; i < 3; i++)
|
|
I915_WRITE(DEW + (i * 4), 0);
|
|
|
|
/* Program P-state weights to account for frequency power adjustment */
|
|
for (i = 0; i < 16; i++) {
|
|
u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4));
|
|
unsigned long freq = intel_pxfreq(pxvidfreq);
|
|
unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
|
|
PXVFREQ_PX_SHIFT;
|
|
unsigned long val;
|
|
|
|
val = vid * vid;
|
|
val *= (freq / 1000);
|
|
val *= 255;
|
|
val /= (127*127*900);
|
|
if (val > 0xff)
|
|
DRM_ERROR("bad pxval: %ld\n", val);
|
|
pxw[i] = val;
|
|
}
|
|
/* Render standby states get 0 weight */
|
|
pxw[14] = 0;
|
|
pxw[15] = 0;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
|
|
(pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
|
|
I915_WRITE(PXW + (i * 4), val);
|
|
}
|
|
|
|
/* Adjust magic regs to magic values (more experimental results) */
|
|
I915_WRITE(OGW0, 0);
|
|
I915_WRITE(OGW1, 0);
|
|
I915_WRITE(EG0, 0x00007f00);
|
|
I915_WRITE(EG1, 0x0000000e);
|
|
I915_WRITE(EG2, 0x000e0000);
|
|
I915_WRITE(EG3, 0x68000300);
|
|
I915_WRITE(EG4, 0x42000000);
|
|
I915_WRITE(EG5, 0x00140031);
|
|
I915_WRITE(EG6, 0);
|
|
I915_WRITE(EG7, 0);
|
|
|
|
for (i = 0; i < 8; i++)
|
|
I915_WRITE(PXWL + (i * 4), 0);
|
|
|
|
/* Enable PMON + select events */
|
|
I915_WRITE(ECR, 0x80000019);
|
|
|
|
lcfuse = I915_READ(LCFUSE02);
|
|
|
|
dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
|
|
}
|
|
|
|
void gen6_enable_rps(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
|
|
u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
|
|
u32 pcu_mbox, rc6_mask = 0;
|
|
int cur_freq, min_freq, max_freq;
|
|
int i;
|
|
|
|
/* Here begins a magic sequence of register writes to enable
|
|
* auto-downclocking.
|
|
*
|
|
* Perhaps there might be some value in exposing these to
|
|
* userspace...
|
|
*/
|
|
I915_WRITE(GEN6_RC_STATE, 0);
|
|
mutex_lock(&dev_priv->dev->struct_mutex);
|
|
gen6_gt_force_wake_get(dev_priv);
|
|
|
|
/* disable the counters and set deterministic thresholds */
|
|
I915_WRITE(GEN6_RC_CONTROL, 0);
|
|
|
|
I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
|
|
I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
|
|
I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
|
|
I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
|
|
I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
|
|
|
|
for (i = 0; i < I915_NUM_RINGS; i++)
|
|
I915_WRITE(RING_MAX_IDLE(dev_priv->ring[i].mmio_base), 10);
|
|
|
|
I915_WRITE(GEN6_RC_SLEEP, 0);
|
|
I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
|
|
I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
|
|
I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
|
|
I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
|
|
|
|
if (i915_enable_rc6)
|
|
rc6_mask = GEN6_RC_CTL_RC6p_ENABLE |
|
|
GEN6_RC_CTL_RC6_ENABLE;
|
|
|
|
I915_WRITE(GEN6_RC_CONTROL,
|
|
rc6_mask |
|
|
GEN6_RC_CTL_EI_MODE(1) |
|
|
GEN6_RC_CTL_HW_ENABLE);
|
|
|
|
I915_WRITE(GEN6_RPNSWREQ,
|
|
GEN6_FREQUENCY(10) |
|
|
GEN6_OFFSET(0) |
|
|
GEN6_AGGRESSIVE_TURBO);
|
|
I915_WRITE(GEN6_RC_VIDEO_FREQ,
|
|
GEN6_FREQUENCY(12));
|
|
|
|
I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
|
|
I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
|
|
18 << 24 |
|
|
6 << 16);
|
|
I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
|
|
I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
|
|
I915_WRITE(GEN6_RP_UP_EI, 100000);
|
|
I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
|
|
I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
|
|
I915_WRITE(GEN6_RP_CONTROL,
|
|
GEN6_RP_MEDIA_TURBO |
|
|
GEN6_RP_USE_NORMAL_FREQ |
|
|
GEN6_RP_MEDIA_IS_GFX |
|
|
GEN6_RP_ENABLE |
|
|
GEN6_RP_UP_BUSY_AVG |
|
|
GEN6_RP_DOWN_IDLE_CONT);
|
|
|
|
if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
|
|
500))
|
|
DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
|
|
|
|
I915_WRITE(GEN6_PCODE_DATA, 0);
|
|
I915_WRITE(GEN6_PCODE_MAILBOX,
|
|
GEN6_PCODE_READY |
|
|
GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
|
|
if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
|
|
500))
|
|
DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
|
|
|
|
min_freq = (rp_state_cap & 0xff0000) >> 16;
|
|
max_freq = rp_state_cap & 0xff;
|
|
cur_freq = (gt_perf_status & 0xff00) >> 8;
|
|
|
|
/* Check for overclock support */
|
|
if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
|
|
500))
|
|
DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
|
|
I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_READ_OC_PARAMS);
|
|
pcu_mbox = I915_READ(GEN6_PCODE_DATA);
|
|
if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
|
|
500))
|
|
DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
|
|
if (pcu_mbox & (1<<31)) { /* OC supported */
|
|
max_freq = pcu_mbox & 0xff;
|
|
DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max to %dMHz\n", pcu_mbox * 50);
|
|
}
|
|
|
|
/* In units of 100MHz */
|
|
dev_priv->max_delay = max_freq;
|
|
dev_priv->min_delay = min_freq;
|
|
dev_priv->cur_delay = cur_freq;
|
|
|
|
/* requires MSI enabled */
|
|
I915_WRITE(GEN6_PMIER,
|
|
GEN6_PM_MBOX_EVENT |
|
|
GEN6_PM_THERMAL_EVENT |
|
|
GEN6_PM_RP_DOWN_TIMEOUT |
|
|
GEN6_PM_RP_UP_THRESHOLD |
|
|
GEN6_PM_RP_DOWN_THRESHOLD |
|
|
GEN6_PM_RP_UP_EI_EXPIRED |
|
|
GEN6_PM_RP_DOWN_EI_EXPIRED);
|
|
spin_lock_irq(&dev_priv->rps_lock);
|
|
WARN_ON(dev_priv->pm_iir != 0);
|
|
I915_WRITE(GEN6_PMIMR, 0);
|
|
spin_unlock_irq(&dev_priv->rps_lock);
|
|
/* enable all PM interrupts */
|
|
I915_WRITE(GEN6_PMINTRMSK, 0);
|
|
|
|
gen6_gt_force_wake_put(dev_priv);
|
|
mutex_unlock(&dev_priv->dev->struct_mutex);
|
|
}
|
|
|
|
void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
|
|
{
|
|
int min_freq = 15;
|
|
int gpu_freq, ia_freq, max_ia_freq;
|
|
int scaling_factor = 180;
|
|
|
|
max_ia_freq = cpufreq_quick_get_max(0);
|
|
/*
|
|
* Default to measured freq if none found, PCU will ensure we don't go
|
|
* over
|
|
*/
|
|
if (!max_ia_freq)
|
|
max_ia_freq = tsc_khz;
|
|
|
|
/* Convert from kHz to MHz */
|
|
max_ia_freq /= 1000;
|
|
|
|
mutex_lock(&dev_priv->dev->struct_mutex);
|
|
|
|
/*
|
|
* For each potential GPU frequency, load a ring frequency we'd like
|
|
* to use for memory access. We do this by specifying the IA frequency
|
|
* the PCU should use as a reference to determine the ring frequency.
|
|
*/
|
|
for (gpu_freq = dev_priv->max_delay; gpu_freq >= dev_priv->min_delay;
|
|
gpu_freq--) {
|
|
int diff = dev_priv->max_delay - gpu_freq;
|
|
|
|
/*
|
|
* For GPU frequencies less than 750MHz, just use the lowest
|
|
* ring freq.
|
|
*/
|
|
if (gpu_freq < min_freq)
|
|
ia_freq = 800;
|
|
else
|
|
ia_freq = max_ia_freq - ((diff * scaling_factor) / 2);
|
|
ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100);
|
|
|
|
I915_WRITE(GEN6_PCODE_DATA,
|
|
(ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT) |
|
|
gpu_freq);
|
|
I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
|
|
GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
|
|
if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
|
|
GEN6_PCODE_READY) == 0, 10)) {
|
|
DRM_ERROR("pcode write of freq table timed out\n");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&dev_priv->dev->struct_mutex);
|
|
}
|
|
|
|
static void ironlake_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
|
|
|
|
/* Required for FBC */
|
|
dspclk_gate |= DPFCUNIT_CLOCK_GATE_DISABLE |
|
|
DPFCRUNIT_CLOCK_GATE_DISABLE |
|
|
DPFDUNIT_CLOCK_GATE_DISABLE;
|
|
/* Required for CxSR */
|
|
dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
|
|
|
|
I915_WRITE(PCH_3DCGDIS0,
|
|
MARIUNIT_CLOCK_GATE_DISABLE |
|
|
SVSMUNIT_CLOCK_GATE_DISABLE);
|
|
I915_WRITE(PCH_3DCGDIS1,
|
|
VFMUNIT_CLOCK_GATE_DISABLE);
|
|
|
|
I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
|
|
|
|
/*
|
|
* According to the spec the following bits should be set in
|
|
* order to enable memory self-refresh
|
|
* The bit 22/21 of 0x42004
|
|
* The bit 5 of 0x42020
|
|
* The bit 15 of 0x45000
|
|
*/
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN2,
|
|
(I915_READ(ILK_DISPLAY_CHICKEN2) |
|
|
ILK_DPARB_GATE | ILK_VSDPFD_FULL));
|
|
I915_WRITE(ILK_DSPCLK_GATE,
|
|
(I915_READ(ILK_DSPCLK_GATE) |
|
|
ILK_DPARB_CLK_GATE));
|
|
I915_WRITE(DISP_ARB_CTL,
|
|
(I915_READ(DISP_ARB_CTL) |
|
|
DISP_FBC_WM_DIS));
|
|
I915_WRITE(WM3_LP_ILK, 0);
|
|
I915_WRITE(WM2_LP_ILK, 0);
|
|
I915_WRITE(WM1_LP_ILK, 0);
|
|
|
|
/*
|
|
* Based on the document from hardware guys the following bits
|
|
* should be set unconditionally in order to enable FBC.
|
|
* The bit 22 of 0x42000
|
|
* The bit 22 of 0x42004
|
|
* The bit 7,8,9 of 0x42020.
|
|
*/
|
|
if (IS_IRONLAKE_M(dev)) {
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN1,
|
|
I915_READ(ILK_DISPLAY_CHICKEN1) |
|
|
ILK_FBCQ_DIS);
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN2,
|
|
I915_READ(ILK_DISPLAY_CHICKEN2) |
|
|
ILK_DPARB_GATE);
|
|
I915_WRITE(ILK_DSPCLK_GATE,
|
|
I915_READ(ILK_DSPCLK_GATE) |
|
|
ILK_DPFC_DIS1 |
|
|
ILK_DPFC_DIS2 |
|
|
ILK_CLK_FBC);
|
|
}
|
|
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN2,
|
|
I915_READ(ILK_DISPLAY_CHICKEN2) |
|
|
ILK_ELPIN_409_SELECT);
|
|
I915_WRITE(_3D_CHICKEN2,
|
|
_3D_CHICKEN2_WM_READ_PIPELINED << 16 |
|
|
_3D_CHICKEN2_WM_READ_PIPELINED);
|
|
}
|
|
|
|
static void gen6_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int pipe;
|
|
uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
|
|
|
|
I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
|
|
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN2,
|
|
I915_READ(ILK_DISPLAY_CHICKEN2) |
|
|
ILK_ELPIN_409_SELECT);
|
|
|
|
I915_WRITE(WM3_LP_ILK, 0);
|
|
I915_WRITE(WM2_LP_ILK, 0);
|
|
I915_WRITE(WM1_LP_ILK, 0);
|
|
|
|
/*
|
|
* According to the spec the following bits should be
|
|
* set in order to enable memory self-refresh and fbc:
|
|
* The bit21 and bit22 of 0x42000
|
|
* The bit21 and bit22 of 0x42004
|
|
* The bit5 and bit7 of 0x42020
|
|
* The bit14 of 0x70180
|
|
* The bit14 of 0x71180
|
|
*/
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN1,
|
|
I915_READ(ILK_DISPLAY_CHICKEN1) |
|
|
ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
|
|
I915_WRITE(ILK_DISPLAY_CHICKEN2,
|
|
I915_READ(ILK_DISPLAY_CHICKEN2) |
|
|
ILK_DPARB_GATE | ILK_VSDPFD_FULL);
|
|
I915_WRITE(ILK_DSPCLK_GATE,
|
|
I915_READ(ILK_DSPCLK_GATE) |
|
|
ILK_DPARB_CLK_GATE |
|
|
ILK_DPFD_CLK_GATE);
|
|
|
|
for_each_pipe(pipe)
|
|
I915_WRITE(DSPCNTR(pipe),
|
|
I915_READ(DSPCNTR(pipe)) |
|
|
DISPPLANE_TRICKLE_FEED_DISABLE);
|
|
}
|
|
|
|
static void ivybridge_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int pipe;
|
|
uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
|
|
|
|
I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
|
|
|
|
I915_WRITE(WM3_LP_ILK, 0);
|
|
I915_WRITE(WM2_LP_ILK, 0);
|
|
I915_WRITE(WM1_LP_ILK, 0);
|
|
|
|
I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
|
|
|
|
for_each_pipe(pipe)
|
|
I915_WRITE(DSPCNTR(pipe),
|
|
I915_READ(DSPCNTR(pipe)) |
|
|
DISPPLANE_TRICKLE_FEED_DISABLE);
|
|
}
|
|
|
|
static void g4x_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t dspclk_gate;
|
|
|
|
I915_WRITE(RENCLK_GATE_D1, 0);
|
|
I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
|
|
GS_UNIT_CLOCK_GATE_DISABLE |
|
|
CL_UNIT_CLOCK_GATE_DISABLE);
|
|
I915_WRITE(RAMCLK_GATE_D, 0);
|
|
dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
|
|
OVRUNIT_CLOCK_GATE_DISABLE |
|
|
OVCUNIT_CLOCK_GATE_DISABLE;
|
|
if (IS_GM45(dev))
|
|
dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
|
|
I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
|
|
}
|
|
|
|
static void crestline_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
|
|
I915_WRITE(RENCLK_GATE_D2, 0);
|
|
I915_WRITE(DSPCLK_GATE_D, 0);
|
|
I915_WRITE(RAMCLK_GATE_D, 0);
|
|
I915_WRITE16(DEUC, 0);
|
|
}
|
|
|
|
static void broadwater_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
|
|
I965_RCC_CLOCK_GATE_DISABLE |
|
|
I965_RCPB_CLOCK_GATE_DISABLE |
|
|
I965_ISC_CLOCK_GATE_DISABLE |
|
|
I965_FBC_CLOCK_GATE_DISABLE);
|
|
I915_WRITE(RENCLK_GATE_D2, 0);
|
|
}
|
|
|
|
static void gen3_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 dstate = I915_READ(D_STATE);
|
|
|
|
dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
|
|
DSTATE_DOT_CLOCK_GATING;
|
|
I915_WRITE(D_STATE, dstate);
|
|
}
|
|
|
|
static void i85x_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
|
|
}
|
|
|
|
static void i830_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
|
|
}
|
|
|
|
static void ibx_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
/*
|
|
* On Ibex Peak and Cougar Point, we need to disable clock
|
|
* gating for the panel power sequencer or it will fail to
|
|
* start up when no ports are active.
|
|
*/
|
|
I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
|
|
}
|
|
|
|
static void cpt_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
/*
|
|
* On Ibex Peak and Cougar Point, we need to disable clock
|
|
* gating for the panel power sequencer or it will fail to
|
|
* start up when no ports are active.
|
|
*/
|
|
I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
|
|
I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
|
|
DPLS_EDP_PPS_FIX_DIS);
|
|
}
|
|
|
|
static void ironlake_teardown_rc6(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (dev_priv->renderctx) {
|
|
i915_gem_object_unpin(dev_priv->renderctx);
|
|
drm_gem_object_unreference(&dev_priv->renderctx->base);
|
|
dev_priv->renderctx = NULL;
|
|
}
|
|
|
|
if (dev_priv->pwrctx) {
|
|
i915_gem_object_unpin(dev_priv->pwrctx);
|
|
drm_gem_object_unreference(&dev_priv->pwrctx->base);
|
|
dev_priv->pwrctx = NULL;
|
|
}
|
|
}
|
|
|
|
static void ironlake_disable_rc6(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (I915_READ(PWRCTXA)) {
|
|
/* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
|
|
I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
|
|
wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
|
|
50);
|
|
|
|
I915_WRITE(PWRCTXA, 0);
|
|
POSTING_READ(PWRCTXA);
|
|
|
|
I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
|
|
POSTING_READ(RSTDBYCTL);
|
|
}
|
|
|
|
ironlake_teardown_rc6(dev);
|
|
}
|
|
|
|
static int ironlake_setup_rc6(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (dev_priv->renderctx == NULL)
|
|
dev_priv->renderctx = intel_alloc_context_page(dev);
|
|
if (!dev_priv->renderctx)
|
|
return -ENOMEM;
|
|
|
|
if (dev_priv->pwrctx == NULL)
|
|
dev_priv->pwrctx = intel_alloc_context_page(dev);
|
|
if (!dev_priv->pwrctx) {
|
|
ironlake_teardown_rc6(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ironlake_enable_rc6(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int ret;
|
|
|
|
/* rc6 disabled by default due to repeated reports of hanging during
|
|
* boot and resume.
|
|
*/
|
|
if (!i915_enable_rc6)
|
|
return;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = ironlake_setup_rc6(dev);
|
|
if (ret) {
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* GPU can automatically power down the render unit if given a page
|
|
* to save state.
|
|
*/
|
|
ret = BEGIN_LP_RING(6);
|
|
if (ret) {
|
|
ironlake_teardown_rc6(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return;
|
|
}
|
|
|
|
OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
|
|
OUT_RING(MI_SET_CONTEXT);
|
|
OUT_RING(dev_priv->renderctx->gtt_offset |
|
|
MI_MM_SPACE_GTT |
|
|
MI_SAVE_EXT_STATE_EN |
|
|
MI_RESTORE_EXT_STATE_EN |
|
|
MI_RESTORE_INHIBIT);
|
|
OUT_RING(MI_SUSPEND_FLUSH);
|
|
OUT_RING(MI_NOOP);
|
|
OUT_RING(MI_FLUSH);
|
|
ADVANCE_LP_RING();
|
|
|
|
/*
|
|
* Wait for the command parser to advance past MI_SET_CONTEXT. The HW
|
|
* does an implicit flush, combined with MI_FLUSH above, it should be
|
|
* safe to assume that renderctx is valid
|
|
*/
|
|
ret = intel_wait_ring_idle(LP_RING(dev_priv));
|
|
if (ret) {
|
|
DRM_ERROR("failed to enable ironlake power power savings\n");
|
|
ironlake_teardown_rc6(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return;
|
|
}
|
|
|
|
I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
|
|
I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
void intel_init_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
dev_priv->display.init_clock_gating(dev);
|
|
|
|
if (dev_priv->display.init_pch_clock_gating)
|
|
dev_priv->display.init_pch_clock_gating(dev);
|
|
}
|
|
|
|
/* Set up chip specific display functions */
|
|
static void intel_init_display(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
/* We always want a DPMS function */
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
dev_priv->display.dpms = ironlake_crtc_dpms;
|
|
dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
|
|
} else {
|
|
dev_priv->display.dpms = i9xx_crtc_dpms;
|
|
dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
|
|
}
|
|
|
|
if (I915_HAS_FBC(dev)) {
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
|
|
dev_priv->display.enable_fbc = ironlake_enable_fbc;
|
|
dev_priv->display.disable_fbc = ironlake_disable_fbc;
|
|
} else if (IS_GM45(dev)) {
|
|
dev_priv->display.fbc_enabled = g4x_fbc_enabled;
|
|
dev_priv->display.enable_fbc = g4x_enable_fbc;
|
|
dev_priv->display.disable_fbc = g4x_disable_fbc;
|
|
} else if (IS_CRESTLINE(dev)) {
|
|
dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
|
|
dev_priv->display.enable_fbc = i8xx_enable_fbc;
|
|
dev_priv->display.disable_fbc = i8xx_disable_fbc;
|
|
}
|
|
/* 855GM needs testing */
|
|
}
|
|
|
|
/* Returns the core display clock speed */
|
|
if (IS_I945G(dev) || (IS_G33(dev) && ! IS_PINEVIEW_M(dev)))
|
|
dev_priv->display.get_display_clock_speed =
|
|
i945_get_display_clock_speed;
|
|
else if (IS_I915G(dev))
|
|
dev_priv->display.get_display_clock_speed =
|
|
i915_get_display_clock_speed;
|
|
else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
|
|
dev_priv->display.get_display_clock_speed =
|
|
i9xx_misc_get_display_clock_speed;
|
|
else if (IS_I915GM(dev))
|
|
dev_priv->display.get_display_clock_speed =
|
|
i915gm_get_display_clock_speed;
|
|
else if (IS_I865G(dev))
|
|
dev_priv->display.get_display_clock_speed =
|
|
i865_get_display_clock_speed;
|
|
else if (IS_I85X(dev))
|
|
dev_priv->display.get_display_clock_speed =
|
|
i855_get_display_clock_speed;
|
|
else /* 852, 830 */
|
|
dev_priv->display.get_display_clock_speed =
|
|
i830_get_display_clock_speed;
|
|
|
|
/* For FIFO watermark updates */
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
if (HAS_PCH_IBX(dev))
|
|
dev_priv->display.init_pch_clock_gating = ibx_init_clock_gating;
|
|
else if (HAS_PCH_CPT(dev))
|
|
dev_priv->display.init_pch_clock_gating = cpt_init_clock_gating;
|
|
|
|
if (IS_GEN5(dev)) {
|
|
if (I915_READ(MLTR_ILK) & ILK_SRLT_MASK)
|
|
dev_priv->display.update_wm = ironlake_update_wm;
|
|
else {
|
|
DRM_DEBUG_KMS("Failed to get proper latency. "
|
|
"Disable CxSR\n");
|
|
dev_priv->display.update_wm = NULL;
|
|
}
|
|
dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
|
|
dev_priv->display.init_clock_gating = ironlake_init_clock_gating;
|
|
} else if (IS_GEN6(dev)) {
|
|
if (SNB_READ_WM0_LATENCY()) {
|
|
dev_priv->display.update_wm = sandybridge_update_wm;
|
|
} else {
|
|
DRM_DEBUG_KMS("Failed to read display plane latency. "
|
|
"Disable CxSR\n");
|
|
dev_priv->display.update_wm = NULL;
|
|
}
|
|
dev_priv->display.fdi_link_train = gen6_fdi_link_train;
|
|
dev_priv->display.init_clock_gating = gen6_init_clock_gating;
|
|
} else if (IS_IVYBRIDGE(dev)) {
|
|
/* FIXME: detect B0+ stepping and use auto training */
|
|
dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
|
|
if (SNB_READ_WM0_LATENCY()) {
|
|
dev_priv->display.update_wm = sandybridge_update_wm;
|
|
} else {
|
|
DRM_DEBUG_KMS("Failed to read display plane latency. "
|
|
"Disable CxSR\n");
|
|
dev_priv->display.update_wm = NULL;
|
|
}
|
|
dev_priv->display.init_clock_gating = ivybridge_init_clock_gating;
|
|
|
|
} else
|
|
dev_priv->display.update_wm = NULL;
|
|
} else if (IS_PINEVIEW(dev)) {
|
|
if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
|
|
dev_priv->is_ddr3,
|
|
dev_priv->fsb_freq,
|
|
dev_priv->mem_freq)) {
|
|
DRM_INFO("failed to find known CxSR latency "
|
|
"(found ddr%s fsb freq %d, mem freq %d), "
|
|
"disabling CxSR\n",
|
|
(dev_priv->is_ddr3 == 1) ? "3": "2",
|
|
dev_priv->fsb_freq, dev_priv->mem_freq);
|
|
/* Disable CxSR and never update its watermark again */
|
|
pineview_disable_cxsr(dev);
|
|
dev_priv->display.update_wm = NULL;
|
|
} else
|
|
dev_priv->display.update_wm = pineview_update_wm;
|
|
dev_priv->display.init_clock_gating = gen3_init_clock_gating;
|
|
} else if (IS_G4X(dev)) {
|
|
dev_priv->display.update_wm = g4x_update_wm;
|
|
dev_priv->display.init_clock_gating = g4x_init_clock_gating;
|
|
} else if (IS_GEN4(dev)) {
|
|
dev_priv->display.update_wm = i965_update_wm;
|
|
if (IS_CRESTLINE(dev))
|
|
dev_priv->display.init_clock_gating = crestline_init_clock_gating;
|
|
else if (IS_BROADWATER(dev))
|
|
dev_priv->display.init_clock_gating = broadwater_init_clock_gating;
|
|
} else if (IS_GEN3(dev)) {
|
|
dev_priv->display.update_wm = i9xx_update_wm;
|
|
dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
|
|
dev_priv->display.init_clock_gating = gen3_init_clock_gating;
|
|
} else if (IS_I865G(dev)) {
|
|
dev_priv->display.update_wm = i830_update_wm;
|
|
dev_priv->display.init_clock_gating = i85x_init_clock_gating;
|
|
dev_priv->display.get_fifo_size = i830_get_fifo_size;
|
|
} else if (IS_I85X(dev)) {
|
|
dev_priv->display.update_wm = i9xx_update_wm;
|
|
dev_priv->display.get_fifo_size = i85x_get_fifo_size;
|
|
dev_priv->display.init_clock_gating = i85x_init_clock_gating;
|
|
} else {
|
|
dev_priv->display.update_wm = i830_update_wm;
|
|
dev_priv->display.init_clock_gating = i830_init_clock_gating;
|
|
if (IS_845G(dev))
|
|
dev_priv->display.get_fifo_size = i845_get_fifo_size;
|
|
else
|
|
dev_priv->display.get_fifo_size = i830_get_fifo_size;
|
|
}
|
|
|
|
/* Default just returns -ENODEV to indicate unsupported */
|
|
dev_priv->display.queue_flip = intel_default_queue_flip;
|
|
|
|
switch (INTEL_INFO(dev)->gen) {
|
|
case 2:
|
|
dev_priv->display.queue_flip = intel_gen2_queue_flip;
|
|
break;
|
|
|
|
case 3:
|
|
dev_priv->display.queue_flip = intel_gen3_queue_flip;
|
|
break;
|
|
|
|
case 4:
|
|
case 5:
|
|
dev_priv->display.queue_flip = intel_gen4_queue_flip;
|
|
break;
|
|
|
|
case 6:
|
|
dev_priv->display.queue_flip = intel_gen6_queue_flip;
|
|
break;
|
|
case 7:
|
|
dev_priv->display.queue_flip = intel_gen7_queue_flip;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
|
|
* resume, or other times. This quirk makes sure that's the case for
|
|
* affected systems.
|
|
*/
|
|
static void quirk_pipea_force (struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
dev_priv->quirks |= QUIRK_PIPEA_FORCE;
|
|
DRM_DEBUG_DRIVER("applying pipe a force quirk\n");
|
|
}
|
|
|
|
struct intel_quirk {
|
|
int device;
|
|
int subsystem_vendor;
|
|
int subsystem_device;
|
|
void (*hook)(struct drm_device *dev);
|
|
};
|
|
|
|
struct intel_quirk intel_quirks[] = {
|
|
/* HP Compaq 2730p needs pipe A force quirk (LP: #291555) */
|
|
{ 0x2a42, 0x103c, 0x30eb, quirk_pipea_force },
|
|
/* HP Mini needs pipe A force quirk (LP: #322104) */
|
|
{ 0x27ae,0x103c, 0x361a, quirk_pipea_force },
|
|
|
|
/* Thinkpad R31 needs pipe A force quirk */
|
|
{ 0x3577, 0x1014, 0x0505, quirk_pipea_force },
|
|
/* Toshiba Protege R-205, S-209 needs pipe A force quirk */
|
|
{ 0x2592, 0x1179, 0x0001, quirk_pipea_force },
|
|
|
|
/* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
|
|
{ 0x3577, 0x1014, 0x0513, quirk_pipea_force },
|
|
/* ThinkPad X40 needs pipe A force quirk */
|
|
|
|
/* ThinkPad T60 needs pipe A force quirk (bug #16494) */
|
|
{ 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
|
|
|
|
/* 855 & before need to leave pipe A & dpll A up */
|
|
{ 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
|
|
{ 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
|
|
};
|
|
|
|
static void intel_init_quirks(struct drm_device *dev)
|
|
{
|
|
struct pci_dev *d = dev->pdev;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
|
|
struct intel_quirk *q = &intel_quirks[i];
|
|
|
|
if (d->device == q->device &&
|
|
(d->subsystem_vendor == q->subsystem_vendor ||
|
|
q->subsystem_vendor == PCI_ANY_ID) &&
|
|
(d->subsystem_device == q->subsystem_device ||
|
|
q->subsystem_device == PCI_ANY_ID))
|
|
q->hook(dev);
|
|
}
|
|
}
|
|
|
|
/* Disable the VGA plane that we never use */
|
|
static void i915_disable_vga(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u8 sr1;
|
|
u32 vga_reg;
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
vga_reg = CPU_VGACNTRL;
|
|
else
|
|
vga_reg = VGACNTRL;
|
|
|
|
vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
|
|
outb(1, VGA_SR_INDEX);
|
|
sr1 = inb(VGA_SR_DATA);
|
|
outb(sr1 | 1<<5, VGA_SR_DATA);
|
|
vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
|
|
udelay(300);
|
|
|
|
I915_WRITE(vga_reg, VGA_DISP_DISABLE);
|
|
POSTING_READ(vga_reg);
|
|
}
|
|
|
|
void intel_modeset_init(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int i;
|
|
|
|
drm_mode_config_init(dev);
|
|
|
|
dev->mode_config.min_width = 0;
|
|
dev->mode_config.min_height = 0;
|
|
|
|
dev->mode_config.funcs = (void *)&intel_mode_funcs;
|
|
|
|
intel_init_quirks(dev);
|
|
|
|
intel_init_display(dev);
|
|
|
|
if (IS_GEN2(dev)) {
|
|
dev->mode_config.max_width = 2048;
|
|
dev->mode_config.max_height = 2048;
|
|
} else if (IS_GEN3(dev)) {
|
|
dev->mode_config.max_width = 4096;
|
|
dev->mode_config.max_height = 4096;
|
|
} else {
|
|
dev->mode_config.max_width = 8192;
|
|
dev->mode_config.max_height = 8192;
|
|
}
|
|
dev->mode_config.fb_base = dev->agp->base;
|
|
|
|
DRM_DEBUG_KMS("%d display pipe%s available.\n",
|
|
dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
|
|
|
|
for (i = 0; i < dev_priv->num_pipe; i++) {
|
|
intel_crtc_init(dev, i);
|
|
}
|
|
|
|
/* Just disable it once at startup */
|
|
i915_disable_vga(dev);
|
|
intel_setup_outputs(dev);
|
|
|
|
intel_init_clock_gating(dev);
|
|
|
|
if (IS_IRONLAKE_M(dev)) {
|
|
ironlake_enable_drps(dev);
|
|
intel_init_emon(dev);
|
|
}
|
|
|
|
if (IS_GEN6(dev)) {
|
|
gen6_enable_rps(dev_priv);
|
|
gen6_update_ring_freq(dev_priv);
|
|
}
|
|
|
|
INIT_WORK(&dev_priv->idle_work, intel_idle_update);
|
|
setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
|
|
(unsigned long)dev);
|
|
}
|
|
|
|
void intel_modeset_gem_init(struct drm_device *dev)
|
|
{
|
|
if (IS_IRONLAKE_M(dev))
|
|
ironlake_enable_rc6(dev);
|
|
|
|
intel_setup_overlay(dev);
|
|
}
|
|
|
|
void intel_modeset_cleanup(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc;
|
|
struct intel_crtc *intel_crtc;
|
|
|
|
drm_kms_helper_poll_fini(dev);
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
intel_unregister_dsm_handler();
|
|
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
/* Skip inactive CRTCs */
|
|
if (!crtc->fb)
|
|
continue;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
intel_increase_pllclock(crtc);
|
|
}
|
|
|
|
if (dev_priv->display.disable_fbc)
|
|
dev_priv->display.disable_fbc(dev);
|
|
|
|
if (IS_IRONLAKE_M(dev))
|
|
ironlake_disable_drps(dev);
|
|
if (IS_GEN6(dev))
|
|
gen6_disable_rps(dev);
|
|
|
|
if (IS_IRONLAKE_M(dev))
|
|
ironlake_disable_rc6(dev);
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
/* Disable the irq before mode object teardown, for the irq might
|
|
* enqueue unpin/hotplug work. */
|
|
drm_irq_uninstall(dev);
|
|
cancel_work_sync(&dev_priv->hotplug_work);
|
|
|
|
/* Shut off idle work before the crtcs get freed. */
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
del_timer_sync(&intel_crtc->idle_timer);
|
|
}
|
|
del_timer_sync(&dev_priv->idle_timer);
|
|
cancel_work_sync(&dev_priv->idle_work);
|
|
|
|
drm_mode_config_cleanup(dev);
|
|
}
|
|
|
|
/*
|
|
* Return which encoder is currently attached for connector.
|
|
*/
|
|
struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
|
|
{
|
|
return &intel_attached_encoder(connector)->base;
|
|
}
|
|
|
|
void intel_connector_attach_encoder(struct intel_connector *connector,
|
|
struct intel_encoder *encoder)
|
|
{
|
|
connector->encoder = encoder;
|
|
drm_mode_connector_attach_encoder(&connector->base,
|
|
&encoder->base);
|
|
}
|
|
|
|
/*
|
|
* set vga decode state - true == enable VGA decode
|
|
*/
|
|
int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u16 gmch_ctrl;
|
|
|
|
pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
|
|
if (state)
|
|
gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
|
|
else
|
|
gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
|
|
pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
#include <linux/seq_file.h>
|
|
|
|
struct intel_display_error_state {
|
|
struct intel_cursor_error_state {
|
|
u32 control;
|
|
u32 position;
|
|
u32 base;
|
|
u32 size;
|
|
} cursor[2];
|
|
|
|
struct intel_pipe_error_state {
|
|
u32 conf;
|
|
u32 source;
|
|
|
|
u32 htotal;
|
|
u32 hblank;
|
|
u32 hsync;
|
|
u32 vtotal;
|
|
u32 vblank;
|
|
u32 vsync;
|
|
} pipe[2];
|
|
|
|
struct intel_plane_error_state {
|
|
u32 control;
|
|
u32 stride;
|
|
u32 size;
|
|
u32 pos;
|
|
u32 addr;
|
|
u32 surface;
|
|
u32 tile_offset;
|
|
} plane[2];
|
|
};
|
|
|
|
struct intel_display_error_state *
|
|
intel_display_capture_error_state(struct drm_device *dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct intel_display_error_state *error;
|
|
int i;
|
|
|
|
error = kmalloc(sizeof(*error), GFP_ATOMIC);
|
|
if (error == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
error->cursor[i].control = I915_READ(CURCNTR(i));
|
|
error->cursor[i].position = I915_READ(CURPOS(i));
|
|
error->cursor[i].base = I915_READ(CURBASE(i));
|
|
|
|
error->plane[i].control = I915_READ(DSPCNTR(i));
|
|
error->plane[i].stride = I915_READ(DSPSTRIDE(i));
|
|
error->plane[i].size = I915_READ(DSPSIZE(i));
|
|
error->plane[i].pos= I915_READ(DSPPOS(i));
|
|
error->plane[i].addr = I915_READ(DSPADDR(i));
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
error->plane[i].surface = I915_READ(DSPSURF(i));
|
|
error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
|
|
}
|
|
|
|
error->pipe[i].conf = I915_READ(PIPECONF(i));
|
|
error->pipe[i].source = I915_READ(PIPESRC(i));
|
|
error->pipe[i].htotal = I915_READ(HTOTAL(i));
|
|
error->pipe[i].hblank = I915_READ(HBLANK(i));
|
|
error->pipe[i].hsync = I915_READ(HSYNC(i));
|
|
error->pipe[i].vtotal = I915_READ(VTOTAL(i));
|
|
error->pipe[i].vblank = I915_READ(VBLANK(i));
|
|
error->pipe[i].vsync = I915_READ(VSYNC(i));
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
void
|
|
intel_display_print_error_state(struct seq_file *m,
|
|
struct drm_device *dev,
|
|
struct intel_display_error_state *error)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
seq_printf(m, "Pipe [%d]:\n", i);
|
|
seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
|
|
seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
|
|
seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
|
|
seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
|
|
seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
|
|
seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
|
|
seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
|
|
seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
|
|
|
|
seq_printf(m, "Plane [%d]:\n", i);
|
|
seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
|
|
seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
|
|
seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
|
|
seq_printf(m, " POS: %08x\n", error->plane[i].pos);
|
|
seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
|
|
if (INTEL_INFO(dev)->gen >= 4) {
|
|
seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
|
|
seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
|
|
}
|
|
|
|
seq_printf(m, "Cursor [%d]:\n", i);
|
|
seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
|
|
seq_printf(m, " POS: %08x\n", error->cursor[i].position);
|
|
seq_printf(m, " BASE: %08x\n", error->cursor[i].base);
|
|
}
|
|
}
|
|
#endif
|