6447 lines
182 KiB
C
6447 lines
182 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/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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#define I8XX_DOT_MIN 25000
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#define I8XX_DOT_MAX 350000
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#define I8XX_VCO_MIN 930000
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#define I8XX_VCO_MAX 1400000
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#define I8XX_N_MIN 3
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#define I8XX_N_MAX 16
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#define I8XX_M_MIN 96
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#define I8XX_M_MAX 140
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#define I8XX_M1_MIN 18
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#define I8XX_M1_MAX 26
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#define I8XX_M2_MIN 6
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#define I8XX_M2_MAX 16
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#define I8XX_P_MIN 4
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#define I8XX_P_MAX 128
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#define I8XX_P1_MIN 2
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#define I8XX_P1_MAX 33
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#define I8XX_P1_LVDS_MIN 1
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#define I8XX_P1_LVDS_MAX 6
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#define I8XX_P2_SLOW 4
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#define I8XX_P2_FAST 2
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#define I8XX_P2_LVDS_SLOW 14
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#define I8XX_P2_LVDS_FAST 7
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#define I8XX_P2_SLOW_LIMIT 165000
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#define I9XX_DOT_MIN 20000
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#define I9XX_DOT_MAX 400000
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#define I9XX_VCO_MIN 1400000
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#define I9XX_VCO_MAX 2800000
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#define PINEVIEW_VCO_MIN 1700000
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#define PINEVIEW_VCO_MAX 3500000
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#define I9XX_N_MIN 1
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#define I9XX_N_MAX 6
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/* Pineview's Ncounter is a ring counter */
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#define PINEVIEW_N_MIN 3
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#define PINEVIEW_N_MAX 6
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#define I9XX_M_MIN 70
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#define I9XX_M_MAX 120
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#define PINEVIEW_M_MIN 2
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#define PINEVIEW_M_MAX 256
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#define I9XX_M1_MIN 10
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#define I9XX_M1_MAX 22
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#define I9XX_M2_MIN 5
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#define I9XX_M2_MAX 9
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/* Pineview M1 is reserved, and must be 0 */
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#define PINEVIEW_M1_MIN 0
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#define PINEVIEW_M1_MAX 0
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#define PINEVIEW_M2_MIN 0
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#define PINEVIEW_M2_MAX 254
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#define I9XX_P_SDVO_DAC_MIN 5
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#define I9XX_P_SDVO_DAC_MAX 80
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#define I9XX_P_LVDS_MIN 7
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#define I9XX_P_LVDS_MAX 98
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#define PINEVIEW_P_LVDS_MIN 7
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#define PINEVIEW_P_LVDS_MAX 112
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#define I9XX_P1_MIN 1
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#define I9XX_P1_MAX 8
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#define I9XX_P2_SDVO_DAC_SLOW 10
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#define I9XX_P2_SDVO_DAC_FAST 5
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#define I9XX_P2_SDVO_DAC_SLOW_LIMIT 200000
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#define I9XX_P2_LVDS_SLOW 14
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#define I9XX_P2_LVDS_FAST 7
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#define I9XX_P2_LVDS_SLOW_LIMIT 112000
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/*The parameter is for SDVO on G4x platform*/
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#define G4X_DOT_SDVO_MIN 25000
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#define G4X_DOT_SDVO_MAX 270000
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#define G4X_VCO_MIN 1750000
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#define G4X_VCO_MAX 3500000
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#define G4X_N_SDVO_MIN 1
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#define G4X_N_SDVO_MAX 4
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#define G4X_M_SDVO_MIN 104
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#define G4X_M_SDVO_MAX 138
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#define G4X_M1_SDVO_MIN 17
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#define G4X_M1_SDVO_MAX 23
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#define G4X_M2_SDVO_MIN 5
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#define G4X_M2_SDVO_MAX 11
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#define G4X_P_SDVO_MIN 10
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#define G4X_P_SDVO_MAX 30
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#define G4X_P1_SDVO_MIN 1
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#define G4X_P1_SDVO_MAX 3
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#define G4X_P2_SDVO_SLOW 10
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#define G4X_P2_SDVO_FAST 10
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#define G4X_P2_SDVO_LIMIT 270000
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/*The parameter is for HDMI_DAC on G4x platform*/
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#define G4X_DOT_HDMI_DAC_MIN 22000
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#define G4X_DOT_HDMI_DAC_MAX 400000
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#define G4X_N_HDMI_DAC_MIN 1
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#define G4X_N_HDMI_DAC_MAX 4
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#define G4X_M_HDMI_DAC_MIN 104
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#define G4X_M_HDMI_DAC_MAX 138
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#define G4X_M1_HDMI_DAC_MIN 16
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#define G4X_M1_HDMI_DAC_MAX 23
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#define G4X_M2_HDMI_DAC_MIN 5
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#define G4X_M2_HDMI_DAC_MAX 11
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#define G4X_P_HDMI_DAC_MIN 5
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#define G4X_P_HDMI_DAC_MAX 80
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#define G4X_P1_HDMI_DAC_MIN 1
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#define G4X_P1_HDMI_DAC_MAX 8
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#define G4X_P2_HDMI_DAC_SLOW 10
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#define G4X_P2_HDMI_DAC_FAST 5
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#define G4X_P2_HDMI_DAC_LIMIT 165000
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/*The parameter is for SINGLE_CHANNEL_LVDS on G4x platform*/
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#define G4X_DOT_SINGLE_CHANNEL_LVDS_MIN 20000
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#define G4X_DOT_SINGLE_CHANNEL_LVDS_MAX 115000
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#define G4X_N_SINGLE_CHANNEL_LVDS_MIN 1
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#define G4X_N_SINGLE_CHANNEL_LVDS_MAX 3
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#define G4X_M_SINGLE_CHANNEL_LVDS_MIN 104
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#define G4X_M_SINGLE_CHANNEL_LVDS_MAX 138
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#define G4X_M1_SINGLE_CHANNEL_LVDS_MIN 17
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#define G4X_M1_SINGLE_CHANNEL_LVDS_MAX 23
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#define G4X_M2_SINGLE_CHANNEL_LVDS_MIN 5
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#define G4X_M2_SINGLE_CHANNEL_LVDS_MAX 11
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#define G4X_P_SINGLE_CHANNEL_LVDS_MIN 28
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#define G4X_P_SINGLE_CHANNEL_LVDS_MAX 112
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#define G4X_P1_SINGLE_CHANNEL_LVDS_MIN 2
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#define G4X_P1_SINGLE_CHANNEL_LVDS_MAX 8
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#define G4X_P2_SINGLE_CHANNEL_LVDS_SLOW 14
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#define G4X_P2_SINGLE_CHANNEL_LVDS_FAST 14
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#define G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT 0
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/*The parameter is for DUAL_CHANNEL_LVDS on G4x platform*/
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#define G4X_DOT_DUAL_CHANNEL_LVDS_MIN 80000
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#define G4X_DOT_DUAL_CHANNEL_LVDS_MAX 224000
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#define G4X_N_DUAL_CHANNEL_LVDS_MIN 1
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#define G4X_N_DUAL_CHANNEL_LVDS_MAX 3
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#define G4X_M_DUAL_CHANNEL_LVDS_MIN 104
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#define G4X_M_DUAL_CHANNEL_LVDS_MAX 138
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#define G4X_M1_DUAL_CHANNEL_LVDS_MIN 17
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#define G4X_M1_DUAL_CHANNEL_LVDS_MAX 23
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#define G4X_M2_DUAL_CHANNEL_LVDS_MIN 5
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#define G4X_M2_DUAL_CHANNEL_LVDS_MAX 11
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#define G4X_P_DUAL_CHANNEL_LVDS_MIN 14
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#define G4X_P_DUAL_CHANNEL_LVDS_MAX 42
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#define G4X_P1_DUAL_CHANNEL_LVDS_MIN 2
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#define G4X_P1_DUAL_CHANNEL_LVDS_MAX 6
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#define G4X_P2_DUAL_CHANNEL_LVDS_SLOW 7
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#define G4X_P2_DUAL_CHANNEL_LVDS_FAST 7
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#define G4X_P2_DUAL_CHANNEL_LVDS_LIMIT 0
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/*The parameter is for DISPLAY PORT on G4x platform*/
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#define G4X_DOT_DISPLAY_PORT_MIN 161670
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#define G4X_DOT_DISPLAY_PORT_MAX 227000
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#define G4X_N_DISPLAY_PORT_MIN 1
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#define G4X_N_DISPLAY_PORT_MAX 2
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#define G4X_M_DISPLAY_PORT_MIN 97
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#define G4X_M_DISPLAY_PORT_MAX 108
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#define G4X_M1_DISPLAY_PORT_MIN 0x10
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#define G4X_M1_DISPLAY_PORT_MAX 0x12
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#define G4X_M2_DISPLAY_PORT_MIN 0x05
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#define G4X_M2_DISPLAY_PORT_MAX 0x06
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#define G4X_P_DISPLAY_PORT_MIN 10
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#define G4X_P_DISPLAY_PORT_MAX 20
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#define G4X_P1_DISPLAY_PORT_MIN 1
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#define G4X_P1_DISPLAY_PORT_MAX 2
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#define G4X_P2_DISPLAY_PORT_SLOW 10
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#define G4X_P2_DISPLAY_PORT_FAST 10
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#define G4X_P2_DISPLAY_PORT_LIMIT 0
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/* Ironlake / Sandybridge */
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/* as we calculate clock using (register_value + 2) for
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N/M1/M2, so here the range value for them is (actual_value-2).
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*/
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#define IRONLAKE_DOT_MIN 25000
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#define IRONLAKE_DOT_MAX 350000
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#define IRONLAKE_VCO_MIN 1760000
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#define IRONLAKE_VCO_MAX 3510000
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#define IRONLAKE_M1_MIN 12
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#define IRONLAKE_M1_MAX 22
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#define IRONLAKE_M2_MIN 5
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#define IRONLAKE_M2_MAX 9
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#define IRONLAKE_P2_DOT_LIMIT 225000 /* 225Mhz */
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/* We have parameter ranges for different type of outputs. */
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/* DAC & HDMI Refclk 120Mhz */
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#define IRONLAKE_DAC_N_MIN 1
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#define IRONLAKE_DAC_N_MAX 5
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#define IRONLAKE_DAC_M_MIN 79
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#define IRONLAKE_DAC_M_MAX 127
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#define IRONLAKE_DAC_P_MIN 5
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#define IRONLAKE_DAC_P_MAX 80
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#define IRONLAKE_DAC_P1_MIN 1
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#define IRONLAKE_DAC_P1_MAX 8
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#define IRONLAKE_DAC_P2_SLOW 10
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#define IRONLAKE_DAC_P2_FAST 5
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/* LVDS single-channel 120Mhz refclk */
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#define IRONLAKE_LVDS_S_N_MIN 1
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#define IRONLAKE_LVDS_S_N_MAX 3
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#define IRONLAKE_LVDS_S_M_MIN 79
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#define IRONLAKE_LVDS_S_M_MAX 118
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#define IRONLAKE_LVDS_S_P_MIN 28
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#define IRONLAKE_LVDS_S_P_MAX 112
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#define IRONLAKE_LVDS_S_P1_MIN 2
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#define IRONLAKE_LVDS_S_P1_MAX 8
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#define IRONLAKE_LVDS_S_P2_SLOW 14
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#define IRONLAKE_LVDS_S_P2_FAST 14
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/* LVDS dual-channel 120Mhz refclk */
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#define IRONLAKE_LVDS_D_N_MIN 1
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#define IRONLAKE_LVDS_D_N_MAX 3
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#define IRONLAKE_LVDS_D_M_MIN 79
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#define IRONLAKE_LVDS_D_M_MAX 127
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#define IRONLAKE_LVDS_D_P_MIN 14
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#define IRONLAKE_LVDS_D_P_MAX 56
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#define IRONLAKE_LVDS_D_P1_MIN 2
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#define IRONLAKE_LVDS_D_P1_MAX 8
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#define IRONLAKE_LVDS_D_P2_SLOW 7
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#define IRONLAKE_LVDS_D_P2_FAST 7
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/* LVDS single-channel 100Mhz refclk */
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#define IRONLAKE_LVDS_S_SSC_N_MIN 1
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#define IRONLAKE_LVDS_S_SSC_N_MAX 2
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#define IRONLAKE_LVDS_S_SSC_M_MIN 79
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#define IRONLAKE_LVDS_S_SSC_M_MAX 126
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#define IRONLAKE_LVDS_S_SSC_P_MIN 28
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#define IRONLAKE_LVDS_S_SSC_P_MAX 112
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#define IRONLAKE_LVDS_S_SSC_P1_MIN 2
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#define IRONLAKE_LVDS_S_SSC_P1_MAX 8
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#define IRONLAKE_LVDS_S_SSC_P2_SLOW 14
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#define IRONLAKE_LVDS_S_SSC_P2_FAST 14
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/* LVDS dual-channel 100Mhz refclk */
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#define IRONLAKE_LVDS_D_SSC_N_MIN 1
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#define IRONLAKE_LVDS_D_SSC_N_MAX 3
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#define IRONLAKE_LVDS_D_SSC_M_MIN 79
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#define IRONLAKE_LVDS_D_SSC_M_MAX 126
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#define IRONLAKE_LVDS_D_SSC_P_MIN 14
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#define IRONLAKE_LVDS_D_SSC_P_MAX 42
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#define IRONLAKE_LVDS_D_SSC_P1_MIN 2
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#define IRONLAKE_LVDS_D_SSC_P1_MAX 6
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#define IRONLAKE_LVDS_D_SSC_P2_SLOW 7
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#define IRONLAKE_LVDS_D_SSC_P2_FAST 7
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/* DisplayPort */
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#define IRONLAKE_DP_N_MIN 1
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#define IRONLAKE_DP_N_MAX 2
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#define IRONLAKE_DP_M_MIN 81
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#define IRONLAKE_DP_M_MAX 90
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#define IRONLAKE_DP_P_MIN 10
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#define IRONLAKE_DP_P_MAX 20
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#define IRONLAKE_DP_P2_FAST 10
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#define IRONLAKE_DP_P2_SLOW 10
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#define IRONLAKE_DP_P2_LIMIT 0
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#define IRONLAKE_DP_P1_MIN 1
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#define IRONLAKE_DP_P1_MAX 2
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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 = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
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.vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
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.n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
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.m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
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.m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
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.m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
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.p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
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.p1 = { .min = I8XX_P1_MIN, .max = I8XX_P1_MAX },
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.p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
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.p2_slow = I8XX_P2_SLOW, .p2_fast = I8XX_P2_FAST },
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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 = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
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.vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
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.n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
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.m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
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.m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
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.m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
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.p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
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.p1 = { .min = I8XX_P1_LVDS_MIN, .max = I8XX_P1_LVDS_MAX },
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.p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
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.p2_slow = I8XX_P2_LVDS_SLOW, .p2_fast = I8XX_P2_LVDS_FAST },
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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 = {
|
|
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
|
|
.vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
|
|
.n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
|
|
.m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
|
|
.m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
|
|
.m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
|
|
.p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
|
|
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
|
|
.p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
|
|
.p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
|
|
.find_pll = intel_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_i9xx_lvds = {
|
|
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
|
|
.vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
|
|
.n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
|
|
.m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
|
|
.m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
|
|
.m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
|
|
.p = { .min = I9XX_P_LVDS_MIN, .max = I9XX_P_LVDS_MAX },
|
|
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
|
|
/* The single-channel range is 25-112Mhz, and dual-channel
|
|
* is 80-224Mhz. Prefer single channel as much as possible.
|
|
*/
|
|
.p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
|
|
.p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST },
|
|
.find_pll = intel_find_best_PLL,
|
|
};
|
|
|
|
/* below parameter and function is for G4X Chipset Family*/
|
|
static const intel_limit_t intel_limits_g4x_sdvo = {
|
|
.dot = { .min = G4X_DOT_SDVO_MIN, .max = G4X_DOT_SDVO_MAX },
|
|
.vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
|
|
.n = { .min = G4X_N_SDVO_MIN, .max = G4X_N_SDVO_MAX },
|
|
.m = { .min = G4X_M_SDVO_MIN, .max = G4X_M_SDVO_MAX },
|
|
.m1 = { .min = G4X_M1_SDVO_MIN, .max = G4X_M1_SDVO_MAX },
|
|
.m2 = { .min = G4X_M2_SDVO_MIN, .max = G4X_M2_SDVO_MAX },
|
|
.p = { .min = G4X_P_SDVO_MIN, .max = G4X_P_SDVO_MAX },
|
|
.p1 = { .min = G4X_P1_SDVO_MIN, .max = G4X_P1_SDVO_MAX},
|
|
.p2 = { .dot_limit = G4X_P2_SDVO_LIMIT,
|
|
.p2_slow = G4X_P2_SDVO_SLOW,
|
|
.p2_fast = G4X_P2_SDVO_FAST
|
|
},
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_g4x_hdmi = {
|
|
.dot = { .min = G4X_DOT_HDMI_DAC_MIN, .max = G4X_DOT_HDMI_DAC_MAX },
|
|
.vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
|
|
.n = { .min = G4X_N_HDMI_DAC_MIN, .max = G4X_N_HDMI_DAC_MAX },
|
|
.m = { .min = G4X_M_HDMI_DAC_MIN, .max = G4X_M_HDMI_DAC_MAX },
|
|
.m1 = { .min = G4X_M1_HDMI_DAC_MIN, .max = G4X_M1_HDMI_DAC_MAX },
|
|
.m2 = { .min = G4X_M2_HDMI_DAC_MIN, .max = G4X_M2_HDMI_DAC_MAX },
|
|
.p = { .min = G4X_P_HDMI_DAC_MIN, .max = G4X_P_HDMI_DAC_MAX },
|
|
.p1 = { .min = G4X_P1_HDMI_DAC_MIN, .max = G4X_P1_HDMI_DAC_MAX},
|
|
.p2 = { .dot_limit = G4X_P2_HDMI_DAC_LIMIT,
|
|
.p2_slow = G4X_P2_HDMI_DAC_SLOW,
|
|
.p2_fast = G4X_P2_HDMI_DAC_FAST
|
|
},
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
|
|
.dot = { .min = G4X_DOT_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_DOT_SINGLE_CHANNEL_LVDS_MAX },
|
|
.vco = { .min = G4X_VCO_MIN,
|
|
.max = G4X_VCO_MAX },
|
|
.n = { .min = G4X_N_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_N_SINGLE_CHANNEL_LVDS_MAX },
|
|
.m = { .min = G4X_M_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_M_SINGLE_CHANNEL_LVDS_MAX },
|
|
.m1 = { .min = G4X_M1_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_M1_SINGLE_CHANNEL_LVDS_MAX },
|
|
.m2 = { .min = G4X_M2_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_M2_SINGLE_CHANNEL_LVDS_MAX },
|
|
.p = { .min = G4X_P_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_P_SINGLE_CHANNEL_LVDS_MAX },
|
|
.p1 = { .min = G4X_P1_SINGLE_CHANNEL_LVDS_MIN,
|
|
.max = G4X_P1_SINGLE_CHANNEL_LVDS_MAX },
|
|
.p2 = { .dot_limit = G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT,
|
|
.p2_slow = G4X_P2_SINGLE_CHANNEL_LVDS_SLOW,
|
|
.p2_fast = G4X_P2_SINGLE_CHANNEL_LVDS_FAST
|
|
},
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
|
|
.dot = { .min = G4X_DOT_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_DOT_DUAL_CHANNEL_LVDS_MAX },
|
|
.vco = { .min = G4X_VCO_MIN,
|
|
.max = G4X_VCO_MAX },
|
|
.n = { .min = G4X_N_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_N_DUAL_CHANNEL_LVDS_MAX },
|
|
.m = { .min = G4X_M_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_M_DUAL_CHANNEL_LVDS_MAX },
|
|
.m1 = { .min = G4X_M1_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_M1_DUAL_CHANNEL_LVDS_MAX },
|
|
.m2 = { .min = G4X_M2_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_M2_DUAL_CHANNEL_LVDS_MAX },
|
|
.p = { .min = G4X_P_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_P_DUAL_CHANNEL_LVDS_MAX },
|
|
.p1 = { .min = G4X_P1_DUAL_CHANNEL_LVDS_MIN,
|
|
.max = G4X_P1_DUAL_CHANNEL_LVDS_MAX },
|
|
.p2 = { .dot_limit = G4X_P2_DUAL_CHANNEL_LVDS_LIMIT,
|
|
.p2_slow = G4X_P2_DUAL_CHANNEL_LVDS_SLOW,
|
|
.p2_fast = G4X_P2_DUAL_CHANNEL_LVDS_FAST
|
|
},
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_g4x_display_port = {
|
|
.dot = { .min = G4X_DOT_DISPLAY_PORT_MIN,
|
|
.max = G4X_DOT_DISPLAY_PORT_MAX },
|
|
.vco = { .min = G4X_VCO_MIN,
|
|
.max = G4X_VCO_MAX},
|
|
.n = { .min = G4X_N_DISPLAY_PORT_MIN,
|
|
.max = G4X_N_DISPLAY_PORT_MAX },
|
|
.m = { .min = G4X_M_DISPLAY_PORT_MIN,
|
|
.max = G4X_M_DISPLAY_PORT_MAX },
|
|
.m1 = { .min = G4X_M1_DISPLAY_PORT_MIN,
|
|
.max = G4X_M1_DISPLAY_PORT_MAX },
|
|
.m2 = { .min = G4X_M2_DISPLAY_PORT_MIN,
|
|
.max = G4X_M2_DISPLAY_PORT_MAX },
|
|
.p = { .min = G4X_P_DISPLAY_PORT_MIN,
|
|
.max = G4X_P_DISPLAY_PORT_MAX },
|
|
.p1 = { .min = G4X_P1_DISPLAY_PORT_MIN,
|
|
.max = G4X_P1_DISPLAY_PORT_MAX},
|
|
.p2 = { .dot_limit = G4X_P2_DISPLAY_PORT_LIMIT,
|
|
.p2_slow = G4X_P2_DISPLAY_PORT_SLOW,
|
|
.p2_fast = G4X_P2_DISPLAY_PORT_FAST },
|
|
.find_pll = intel_find_pll_g4x_dp,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_pineview_sdvo = {
|
|
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX},
|
|
.vco = { .min = PINEVIEW_VCO_MIN, .max = PINEVIEW_VCO_MAX },
|
|
.n = { .min = PINEVIEW_N_MIN, .max = PINEVIEW_N_MAX },
|
|
.m = { .min = PINEVIEW_M_MIN, .max = PINEVIEW_M_MAX },
|
|
.m1 = { .min = PINEVIEW_M1_MIN, .max = PINEVIEW_M1_MAX },
|
|
.m2 = { .min = PINEVIEW_M2_MIN, .max = PINEVIEW_M2_MAX },
|
|
.p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
|
|
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
|
|
.p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
|
|
.p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
|
|
.find_pll = intel_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_pineview_lvds = {
|
|
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
|
|
.vco = { .min = PINEVIEW_VCO_MIN, .max = PINEVIEW_VCO_MAX },
|
|
.n = { .min = PINEVIEW_N_MIN, .max = PINEVIEW_N_MAX },
|
|
.m = { .min = PINEVIEW_M_MIN, .max = PINEVIEW_M_MAX },
|
|
.m1 = { .min = PINEVIEW_M1_MIN, .max = PINEVIEW_M1_MAX },
|
|
.m2 = { .min = PINEVIEW_M2_MIN, .max = PINEVIEW_M2_MAX },
|
|
.p = { .min = PINEVIEW_P_LVDS_MIN, .max = PINEVIEW_P_LVDS_MAX },
|
|
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
|
|
/* Pineview only supports single-channel mode. */
|
|
.p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
|
|
.p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_SLOW },
|
|
.find_pll = intel_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_ironlake_dac = {
|
|
.dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
|
|
.vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
|
|
.n = { .min = IRONLAKE_DAC_N_MIN, .max = IRONLAKE_DAC_N_MAX },
|
|
.m = { .min = IRONLAKE_DAC_M_MIN, .max = IRONLAKE_DAC_M_MAX },
|
|
.m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
|
|
.m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
|
|
.p = { .min = IRONLAKE_DAC_P_MIN, .max = IRONLAKE_DAC_P_MAX },
|
|
.p1 = { .min = IRONLAKE_DAC_P1_MIN, .max = IRONLAKE_DAC_P1_MAX },
|
|
.p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
|
|
.p2_slow = IRONLAKE_DAC_P2_SLOW,
|
|
.p2_fast = IRONLAKE_DAC_P2_FAST },
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_ironlake_single_lvds = {
|
|
.dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
|
|
.vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
|
|
.n = { .min = IRONLAKE_LVDS_S_N_MIN, .max = IRONLAKE_LVDS_S_N_MAX },
|
|
.m = { .min = IRONLAKE_LVDS_S_M_MIN, .max = IRONLAKE_LVDS_S_M_MAX },
|
|
.m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
|
|
.m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
|
|
.p = { .min = IRONLAKE_LVDS_S_P_MIN, .max = IRONLAKE_LVDS_S_P_MAX },
|
|
.p1 = { .min = IRONLAKE_LVDS_S_P1_MIN, .max = IRONLAKE_LVDS_S_P1_MAX },
|
|
.p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
|
|
.p2_slow = IRONLAKE_LVDS_S_P2_SLOW,
|
|
.p2_fast = IRONLAKE_LVDS_S_P2_FAST },
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_ironlake_dual_lvds = {
|
|
.dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
|
|
.vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
|
|
.n = { .min = IRONLAKE_LVDS_D_N_MIN, .max = IRONLAKE_LVDS_D_N_MAX },
|
|
.m = { .min = IRONLAKE_LVDS_D_M_MIN, .max = IRONLAKE_LVDS_D_M_MAX },
|
|
.m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
|
|
.m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
|
|
.p = { .min = IRONLAKE_LVDS_D_P_MIN, .max = IRONLAKE_LVDS_D_P_MAX },
|
|
.p1 = { .min = IRONLAKE_LVDS_D_P1_MIN, .max = IRONLAKE_LVDS_D_P1_MAX },
|
|
.p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
|
|
.p2_slow = IRONLAKE_LVDS_D_P2_SLOW,
|
|
.p2_fast = IRONLAKE_LVDS_D_P2_FAST },
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
|
|
.dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
|
|
.vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
|
|
.n = { .min = IRONLAKE_LVDS_S_SSC_N_MIN, .max = IRONLAKE_LVDS_S_SSC_N_MAX },
|
|
.m = { .min = IRONLAKE_LVDS_S_SSC_M_MIN, .max = IRONLAKE_LVDS_S_SSC_M_MAX },
|
|
.m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
|
|
.m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
|
|
.p = { .min = IRONLAKE_LVDS_S_SSC_P_MIN, .max = IRONLAKE_LVDS_S_SSC_P_MAX },
|
|
.p1 = { .min = IRONLAKE_LVDS_S_SSC_P1_MIN,.max = IRONLAKE_LVDS_S_SSC_P1_MAX },
|
|
.p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
|
|
.p2_slow = IRONLAKE_LVDS_S_SSC_P2_SLOW,
|
|
.p2_fast = IRONLAKE_LVDS_S_SSC_P2_FAST },
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
|
|
.dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
|
|
.vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
|
|
.n = { .min = IRONLAKE_LVDS_D_SSC_N_MIN, .max = IRONLAKE_LVDS_D_SSC_N_MAX },
|
|
.m = { .min = IRONLAKE_LVDS_D_SSC_M_MIN, .max = IRONLAKE_LVDS_D_SSC_M_MAX },
|
|
.m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
|
|
.m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
|
|
.p = { .min = IRONLAKE_LVDS_D_SSC_P_MIN, .max = IRONLAKE_LVDS_D_SSC_P_MAX },
|
|
.p1 = { .min = IRONLAKE_LVDS_D_SSC_P1_MIN,.max = IRONLAKE_LVDS_D_SSC_P1_MAX },
|
|
.p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
|
|
.p2_slow = IRONLAKE_LVDS_D_SSC_P2_SLOW,
|
|
.p2_fast = IRONLAKE_LVDS_D_SSC_P2_FAST },
|
|
.find_pll = intel_g4x_find_best_PLL,
|
|
};
|
|
|
|
static const intel_limit_t intel_limits_ironlake_display_port = {
|
|
.dot = { .min = IRONLAKE_DOT_MIN,
|
|
.max = IRONLAKE_DOT_MAX },
|
|
.vco = { .min = IRONLAKE_VCO_MIN,
|
|
.max = IRONLAKE_VCO_MAX},
|
|
.n = { .min = IRONLAKE_DP_N_MIN,
|
|
.max = IRONLAKE_DP_N_MAX },
|
|
.m = { .min = IRONLAKE_DP_M_MIN,
|
|
.max = IRONLAKE_DP_M_MAX },
|
|
.m1 = { .min = IRONLAKE_M1_MIN,
|
|
.max = IRONLAKE_M1_MAX },
|
|
.m2 = { .min = IRONLAKE_M2_MIN,
|
|
.max = IRONLAKE_M2_MAX },
|
|
.p = { .min = IRONLAKE_DP_P_MIN,
|
|
.max = IRONLAKE_DP_P_MAX },
|
|
.p1 = { .min = IRONLAKE_DP_P1_MIN,
|
|
.max = IRONLAKE_DP_P1_MAX},
|
|
.p2 = { .dot_limit = IRONLAKE_DP_P2_LIMIT,
|
|
.p2_slow = IRONLAKE_DP_P2_SLOW,
|
|
.p2_fast = IRONLAKE_DP_P2_FAST },
|
|
.find_pll = intel_find_pll_ironlake_dp,
|
|
};
|
|
|
|
static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
const intel_limit_t *limit;
|
|
int refclk = 120;
|
|
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
|
|
if (dev_priv->lvds_use_ssc && dev_priv->lvds_ssc_freq == 100)
|
|
refclk = 100;
|
|
|
|
if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
|
|
LVDS_CLKB_POWER_UP) {
|
|
/* LVDS dual channel */
|
|
if (refclk == 100)
|
|
limit = &intel_limits_ironlake_dual_lvds_100m;
|
|
else
|
|
limit = &intel_limits_ironlake_dual_lvds;
|
|
} else {
|
|
if (refclk == 100)
|
|
limit = &intel_limits_ironlake_single_lvds_100m;
|
|
else
|
|
limit = &intel_limits_ironlake_single_lvds;
|
|
}
|
|
} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
|
|
HAS_eDP)
|
|
limit = &intel_limits_ironlake_display_port;
|
|
else
|
|
limit = &intel_limits_ironlake_dac;
|
|
|
|
return limit;
|
|
}
|
|
|
|
static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
const intel_limit_t *limit;
|
|
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
|
|
if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
|
|
LVDS_CLKB_POWER_UP)
|
|
/* LVDS with dual channel */
|
|
limit = &intel_limits_g4x_dual_channel_lvds;
|
|
else
|
|
/* LVDS with dual channel */
|
|
limit = &intel_limits_g4x_single_channel_lvds;
|
|
} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
|
|
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)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
const intel_limit_t *limit;
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
limit = intel_ironlake_limit(crtc);
|
|
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_crtc *crtc, intel_clock_t *clock)
|
|
{
|
|
const intel_limit_t *limit = intel_limit (crtc);
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
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(crtc, &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(crtc, &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 = (pipe == 0 ? PIPEASTAT : PIPEBSTAT);
|
|
|
|
/* 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 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);
|
|
POSTING_READ(DPFC_CONTROL);
|
|
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 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);
|
|
POSTING_READ(ILK_DPFC_CONTROL);
|
|
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);
|
|
|
|
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) {
|
|
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 (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)
|
|
{
|
|
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();
|
|
}
|
|
|
|
ret = i915_gem_object_pin(obj, alignment, true);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = i915_gem_object_set_to_display_plane(obj, pipelined);
|
|
if (ret)
|
|
goto err_unpin;
|
|
|
|
/* 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, false);
|
|
if (ret)
|
|
goto err_unpin;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_unpin:
|
|
i915_gem_object_unpin(obj);
|
|
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(&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.
|
|
*/
|
|
ret = i915_gem_object_flush_gpu(obj, false);
|
|
if (ret) {
|
|
i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return 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)
|
|
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);
|
|
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);
|
|
}
|
|
|
|
/* 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;
|
|
u32 reg, temp, tries;
|
|
|
|
/* 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*/
|
|
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_ENABLE);
|
|
|
|
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 const 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");
|
|
}
|
|
|
|
static void ironlake_fdi_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 intel_flush_display_plane(struct drm_device *dev,
|
|
int plane)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u32 reg = DSPADDR(plane);
|
|
I915_WRITE(reg, I915_READ(reg));
|
|
}
|
|
|
|
/*
|
|
* 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 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 reg, temp;
|
|
|
|
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);
|
|
}
|
|
|
|
ironlake_fdi_enable(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(pipe ? PFB_CTL_1 : PFA_CTL_1,
|
|
PF_ENABLE | PF_FILTER_MED_3x3);
|
|
I915_WRITE(pipe ? PFB_WIN_POS : PFA_WIN_POS,
|
|
dev_priv->pch_pf_pos);
|
|
I915_WRITE(pipe ? PFB_WIN_SZ : PFA_WIN_SZ,
|
|
dev_priv->pch_pf_size);
|
|
}
|
|
|
|
/* Enable CPU pipe */
|
|
reg = PIPECONF(pipe);
|
|
temp = I915_READ(reg);
|
|
if ((temp & PIPECONF_ENABLE) == 0) {
|
|
I915_WRITE(reg, temp | PIPECONF_ENABLE);
|
|
POSTING_READ(reg);
|
|
intel_wait_for_vblank(dev, intel_crtc->pipe);
|
|
}
|
|
|
|
/* configure and enable CPU plane */
|
|
reg = DSPCNTR(plane);
|
|
temp = I915_READ(reg);
|
|
if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
|
|
I915_WRITE(reg, temp | DISPLAY_PLANE_ENABLE);
|
|
intel_flush_display_plane(dev, plane);
|
|
}
|
|
|
|
/* For PCH output, training FDI link */
|
|
if (IS_GEN6(dev))
|
|
gen6_fdi_link_train(crtc);
|
|
else
|
|
ironlake_fdi_link_train(crtc);
|
|
|
|
/* enable PCH DPLL */
|
|
reg = PCH_DPLL(pipe);
|
|
temp = I915_READ(reg);
|
|
if ((temp & DPLL_VCO_ENABLE) == 0) {
|
|
I915_WRITE(reg, temp | DPLL_VCO_ENABLE);
|
|
POSTING_READ(reg);
|
|
udelay(200);
|
|
}
|
|
|
|
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 */
|
|
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);
|
|
}
|
|
|
|
/* enable PCH transcoder */
|
|
reg = TRANSCONF(pipe);
|
|
temp = I915_READ(reg);
|
|
/*
|
|
* make the BPC in transcoder be consistent with
|
|
* that in pipeconf reg.
|
|
*/
|
|
temp &= ~PIPE_BPC_MASK;
|
|
temp |= I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK;
|
|
I915_WRITE(reg, temp | TRANS_ENABLE);
|
|
if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
|
|
DRM_ERROR("failed to enable transcoder %d\n", pipe);
|
|
|
|
intel_crtc_load_lut(crtc);
|
|
intel_update_fbc(dev);
|
|
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);
|
|
|
|
/* Disable display plane */
|
|
reg = DSPCNTR(plane);
|
|
temp = I915_READ(reg);
|
|
if (temp & DISPLAY_PLANE_ENABLE) {
|
|
I915_WRITE(reg, temp & ~DISPLAY_PLANE_ENABLE);
|
|
intel_flush_display_plane(dev, plane);
|
|
}
|
|
|
|
if (dev_priv->cfb_plane == plane &&
|
|
dev_priv->display.disable_fbc)
|
|
dev_priv->display.disable_fbc(dev);
|
|
|
|
/* disable cpu pipe, disable after all planes disabled */
|
|
reg = PIPECONF(pipe);
|
|
temp = I915_READ(reg);
|
|
if (temp & PIPECONF_ENABLE) {
|
|
I915_WRITE(reg, temp & ~PIPECONF_ENABLE);
|
|
POSTING_READ(reg);
|
|
/* wait for cpu pipe off, pipe state */
|
|
intel_wait_for_pipe_off(dev, intel_crtc->pipe);
|
|
}
|
|
|
|
/* Disable PF */
|
|
I915_WRITE(pipe ? PFB_CTL_1 : PFA_CTL_1, 0);
|
|
I915_WRITE(pipe ? PFB_WIN_SZ : PFA_WIN_SZ, 0);
|
|
|
|
/* 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),
|
|
I915_READ(FDI_RX_CHICKEN(pipe) &
|
|
~FDI_RX_PHASE_SYNC_POINTER_ENABLE));
|
|
|
|
/* 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);
|
|
|
|
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
|
|
temp = I915_READ(PCH_LVDS);
|
|
if (temp & LVDS_PORT_EN) {
|
|
I915_WRITE(PCH_LVDS, temp & ~LVDS_PORT_EN);
|
|
POSTING_READ(PCH_LVDS);
|
|
udelay(100);
|
|
}
|
|
}
|
|
|
|
/* disable PCH transcoder */
|
|
reg = TRANSCONF(plane);
|
|
temp = I915_READ(reg);
|
|
if (temp & TRANS_ENABLE) {
|
|
I915_WRITE(reg, temp & ~TRANS_ENABLE);
|
|
/* 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");
|
|
}
|
|
|
|
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);
|
|
I915_WRITE(reg, temp);
|
|
|
|
/* disable DPLL_SEL */
|
|
temp = I915_READ(PCH_DPLL_SEL);
|
|
if (pipe == 0)
|
|
temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
|
|
else
|
|
temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
|
|
I915_WRITE(PCH_DPLL_SEL, temp);
|
|
}
|
|
|
|
/* disable PCH DPLL */
|
|
reg = PCH_DPLL(pipe);
|
|
temp = I915_READ(reg);
|
|
I915_WRITE(reg, temp & ~DPLL_VCO_ENABLE);
|
|
|
|
/* 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);
|
|
intel_update_fbc(dev);
|
|
intel_clear_scanline_wait(dev);
|
|
}
|
|
|
|
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;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
(void) intel_overlay_switch_off(intel_crtc->overlay, false);
|
|
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;
|
|
u32 reg, temp;
|
|
|
|
if (intel_crtc->active)
|
|
return;
|
|
|
|
intel_crtc->active = true;
|
|
intel_update_watermarks(dev);
|
|
|
|
/* Enable the DPLL */
|
|
reg = DPLL(pipe);
|
|
temp = I915_READ(reg);
|
|
if ((temp & DPLL_VCO_ENABLE) == 0) {
|
|
I915_WRITE(reg, temp);
|
|
|
|
/* Wait for the clocks to stabilize. */
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
I915_WRITE(reg, temp | DPLL_VCO_ENABLE);
|
|
|
|
/* Wait for the clocks to stabilize. */
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
|
|
I915_WRITE(reg, temp | DPLL_VCO_ENABLE);
|
|
|
|
/* Wait for the clocks to stabilize. */
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
}
|
|
|
|
/* Enable the pipe */
|
|
reg = PIPECONF(pipe);
|
|
temp = I915_READ(reg);
|
|
if ((temp & PIPECONF_ENABLE) == 0)
|
|
I915_WRITE(reg, temp | PIPECONF_ENABLE);
|
|
|
|
/* Enable the plane */
|
|
reg = DSPCNTR(plane);
|
|
temp = I915_READ(reg);
|
|
if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
|
|
I915_WRITE(reg, temp | DISPLAY_PLANE_ENABLE);
|
|
intel_flush_display_plane(dev, plane);
|
|
}
|
|
|
|
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;
|
|
u32 reg, temp;
|
|
|
|
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);
|
|
|
|
/* Disable display plane */
|
|
reg = DSPCNTR(plane);
|
|
temp = I915_READ(reg);
|
|
if (temp & DISPLAY_PLANE_ENABLE) {
|
|
I915_WRITE(reg, temp & ~DISPLAY_PLANE_ENABLE);
|
|
/* Flush the plane changes */
|
|
intel_flush_display_plane(dev, plane);
|
|
|
|
/* Wait for vblank for the disable to take effect */
|
|
if (IS_GEN2(dev))
|
|
intel_wait_for_vblank(dev, pipe);
|
|
}
|
|
|
|
/* Don't disable pipe A or pipe A PLLs if needed */
|
|
if (pipe == 0 && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
|
|
goto done;
|
|
|
|
/* Next, disable display pipes */
|
|
reg = PIPECONF(pipe);
|
|
temp = I915_READ(reg);
|
|
if (temp & PIPECONF_ENABLE) {
|
|
I915_WRITE(reg, temp & ~PIPECONF_ENABLE);
|
|
|
|
/* Wait for the pipe to turn off */
|
|
POSTING_READ(reg);
|
|
intel_wait_for_pipe_off(dev, pipe);
|
|
}
|
|
|
|
reg = DPLL(pipe);
|
|
temp = I915_READ(reg);
|
|
if (temp & DPLL_VCO_ENABLE) {
|
|
I915_WRITE(reg, temp & ~DPLL_VCO_ENABLE);
|
|
|
|
/* Wait for the clocks to turn off. */
|
|
POSTING_READ(reg);
|
|
udelay(150);
|
|
}
|
|
|
|
done:
|
|
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 %d in SAREA\n", 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 struct intel_watermark_params pineview_display_wm = {
|
|
PINEVIEW_DISPLAY_FIFO,
|
|
PINEVIEW_MAX_WM,
|
|
PINEVIEW_DFT_WM,
|
|
PINEVIEW_GUARD_WM,
|
|
PINEVIEW_FIFO_LINE_SIZE
|
|
};
|
|
static 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 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 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 struct intel_watermark_params g4x_wm_info = {
|
|
G4X_FIFO_SIZE,
|
|
G4X_MAX_WM,
|
|
G4X_MAX_WM,
|
|
2,
|
|
G4X_FIFO_LINE_SIZE,
|
|
};
|
|
static 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 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 struct intel_watermark_params i945_wm_info = {
|
|
I945_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I915_FIFO_LINE_SIZE
|
|
};
|
|
static struct intel_watermark_params i915_wm_info = {
|
|
I915_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I915_FIFO_LINE_SIZE
|
|
};
|
|
static struct intel_watermark_params i855_wm_info = {
|
|
I855GM_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I830_FIFO_LINE_SIZE
|
|
};
|
|
static struct intel_watermark_params i830_wm_info = {
|
|
I830_FIFO_SIZE,
|
|
I915_MAX_WM,
|
|
1,
|
|
2,
|
|
I830_FIFO_LINE_SIZE
|
|
};
|
|
|
|
static struct intel_watermark_params ironlake_display_wm_info = {
|
|
ILK_DISPLAY_FIFO,
|
|
ILK_DISPLAY_MAXWM,
|
|
ILK_DISPLAY_DFTWM,
|
|
2,
|
|
ILK_FIFO_LINE_SIZE
|
|
};
|
|
|
|
static struct intel_watermark_params ironlake_cursor_wm_info = {
|
|
ILK_CURSOR_FIFO,
|
|
ILK_CURSOR_MAXWM,
|
|
ILK_CURSOR_DFTWM,
|
|
2,
|
|
ILK_FIFO_LINE_SIZE
|
|
};
|
|
|
|
static 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 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
|
|
};
|
|
|
|
/**
|
|
* 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,
|
|
struct intel_watermark_params *wm,
|
|
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: %d\n", entries_required);
|
|
|
|
wm_size = wm->fifo_size - (entries_required + wm->guard_size);
|
|
|
|
DRM_DEBUG_KMS("FIFO watermark level: %d\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 void pineview_update_wm(struct drm_device *dev, int planea_clock,
|
|
int planeb_clock, int sr_hdisplay, int unused,
|
|
int pixel_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
const struct cxsr_latency *latency;
|
|
u32 reg;
|
|
unsigned long wm;
|
|
int sr_clock;
|
|
|
|
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;
|
|
}
|
|
|
|
if (!planea_clock || !planeb_clock) {
|
|
sr_clock = planea_clock ? planea_clock : planeb_clock;
|
|
|
|
/* Display SR */
|
|
wm = intel_calculate_wm(sr_clock, &pineview_display_wm,
|
|
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(sr_clock, &pineview_cursor_wm,
|
|
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(sr_clock, &pineview_display_hplloff_wm,
|
|
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(sr_clock, &pineview_cursor_hplloff_wm,
|
|
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 void g4x_update_wm(struct drm_device *dev, int planea_clock,
|
|
int planeb_clock, int sr_hdisplay, int sr_htotal,
|
|
int pixel_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int total_size, cacheline_size;
|
|
int planea_wm, planeb_wm, cursora_wm, cursorb_wm, cursor_sr;
|
|
struct intel_watermark_params planea_params, planeb_params;
|
|
unsigned long line_time_us;
|
|
int sr_clock, sr_entries = 0, entries_required;
|
|
|
|
/* Create copies of the base settings for each pipe */
|
|
planea_params = planeb_params = g4x_wm_info;
|
|
|
|
/* Grab a couple of global values before we overwrite them */
|
|
total_size = planea_params.fifo_size;
|
|
cacheline_size = planea_params.cacheline_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 = ((planea_clock / 1000) * pixel_size * latency_ns) /
|
|
1000;
|
|
entries_required = DIV_ROUND_UP(entries_required, G4X_FIFO_LINE_SIZE);
|
|
planea_wm = entries_required + planea_params.guard_size;
|
|
|
|
entries_required = ((planeb_clock / 1000) * pixel_size * latency_ns) /
|
|
1000;
|
|
entries_required = DIV_ROUND_UP(entries_required, G4X_FIFO_LINE_SIZE);
|
|
planeb_wm = entries_required + planeb_params.guard_size;
|
|
|
|
cursora_wm = cursorb_wm = 16;
|
|
cursor_sr = 32;
|
|
|
|
DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
|
|
|
|
/* Calc sr entries for one plane configs */
|
|
if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
|
|
/* self-refresh has much higher latency */
|
|
static const int sr_latency_ns = 12000;
|
|
|
|
sr_clock = planea_clock ? planea_clock : planeb_clock;
|
|
line_time_us = ((sr_htotal * 1000) / sr_clock);
|
|
|
|
/* Use ns/us then divide to preserve precision */
|
|
sr_entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * sr_hdisplay;
|
|
sr_entries = DIV_ROUND_UP(sr_entries, cacheline_size);
|
|
|
|
entries_required = (((sr_latency_ns / line_time_us) +
|
|
1000) / 1000) * pixel_size * 64;
|
|
entries_required = DIV_ROUND_UP(entries_required,
|
|
g4x_cursor_wm_info.cacheline_size);
|
|
cursor_sr = entries_required + g4x_cursor_wm_info.guard_size;
|
|
|
|
if (cursor_sr > g4x_cursor_wm_info.max_wm)
|
|
cursor_sr = g4x_cursor_wm_info.max_wm;
|
|
DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
|
|
"cursor %d\n", sr_entries, cursor_sr);
|
|
|
|
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
|
|
} else {
|
|
/* Turn off self refresh if both pipes are enabled */
|
|
I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
|
|
& ~FW_BLC_SELF_EN);
|
|
}
|
|
|
|
DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
|
|
planea_wm, planeb_wm, sr_entries);
|
|
|
|
planea_wm &= 0x3f;
|
|
planeb_wm &= 0x3f;
|
|
|
|
I915_WRITE(DSPFW1, (sr_entries << 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, int planea_clock,
|
|
int planeb_clock, int sr_hdisplay, int sr_htotal,
|
|
int pixel_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
unsigned long line_time_us;
|
|
int sr_clock, sr_entries, srwm = 1;
|
|
int cursor_sr = 16;
|
|
|
|
/* Calc sr entries for one plane configs */
|
|
if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
|
|
/* self-refresh has much higher latency */
|
|
static const int sr_latency_ns = 12000;
|
|
|
|
sr_clock = planea_clock ? planea_clock : planeb_clock;
|
|
line_time_us = ((sr_htotal * 1000) / sr_clock);
|
|
|
|
/* Use ns/us then divide to preserve precision */
|
|
sr_entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * sr_hdisplay;
|
|
sr_entries = DIV_ROUND_UP(sr_entries, I915_FIFO_LINE_SIZE);
|
|
DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
|
|
srwm = I965_FIFO_SIZE - sr_entries;
|
|
if (srwm < 0)
|
|
srwm = 1;
|
|
srwm &= 0x1ff;
|
|
|
|
sr_entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * 64;
|
|
sr_entries = DIV_ROUND_UP(sr_entries,
|
|
i965_cursor_wm_info.cacheline_size);
|
|
cursor_sr = i965_cursor_wm_info.fifo_size -
|
|
(sr_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, int planea_clock,
|
|
int planeb_clock, int sr_hdisplay, int sr_htotal,
|
|
int pixel_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t fwater_lo;
|
|
uint32_t fwater_hi;
|
|
int total_size, cacheline_size, cwm, srwm = 1;
|
|
int planea_wm, planeb_wm;
|
|
struct intel_watermark_params planea_params, planeb_params;
|
|
unsigned long line_time_us;
|
|
int sr_clock, sr_entries = 0;
|
|
|
|
/* Create copies of the base settings for each pipe */
|
|
if (IS_CRESTLINE(dev) || IS_I945GM(dev))
|
|
planea_params = planeb_params = i945_wm_info;
|
|
else if (!IS_GEN2(dev))
|
|
planea_params = planeb_params = i915_wm_info;
|
|
else
|
|
planea_params = planeb_params = i855_wm_info;
|
|
|
|
/* Grab a couple of global values before we overwrite them */
|
|
total_size = planea_params.fifo_size;
|
|
cacheline_size = planea_params.cacheline_size;
|
|
|
|
/* Update per-plane FIFO sizes */
|
|
planea_params.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
|
|
planeb_params.fifo_size = dev_priv->display.get_fifo_size(dev, 1);
|
|
|
|
planea_wm = intel_calculate_wm(planea_clock, &planea_params,
|
|
pixel_size, latency_ns);
|
|
planeb_wm = intel_calculate_wm(planeb_clock, &planeb_params,
|
|
pixel_size, latency_ns);
|
|
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;
|
|
|
|
/* Calc sr entries for one plane configs */
|
|
if (HAS_FW_BLC(dev) && sr_hdisplay &&
|
|
(!planea_clock || !planeb_clock)) {
|
|
/* self-refresh has much higher latency */
|
|
static const int sr_latency_ns = 6000;
|
|
|
|
sr_clock = planea_clock ? planea_clock : planeb_clock;
|
|
line_time_us = ((sr_htotal * 1000) / sr_clock);
|
|
|
|
/* Use ns/us then divide to preserve precision */
|
|
sr_entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
|
|
pixel_size * sr_hdisplay;
|
|
sr_entries = DIV_ROUND_UP(sr_entries, cacheline_size);
|
|
DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries);
|
|
srwm = total_size - sr_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)) {
|
|
/* 915M has a smaller SRWM field */
|
|
I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
|
|
I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
|
|
}
|
|
} else {
|
|
/* Turn off self refresh if both pipes are enabled */
|
|
if (IS_I945G(dev) || IS_I945GM(dev)) {
|
|
I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
|
|
& ~FW_BLC_SELF_EN);
|
|
} else if (IS_I915GM(dev)) {
|
|
I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static void i830_update_wm(struct drm_device *dev, int planea_clock, int unused,
|
|
int unused2, int unused3, int pixel_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
uint32_t fwater_lo = I915_READ(FW_BLC) & ~0xfff;
|
|
int planea_wm;
|
|
|
|
i830_wm_info.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
|
|
|
|
planea_wm = intel_calculate_wm(planea_clock, &i830_wm_info,
|
|
pixel_size, latency_ns);
|
|
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
|
|
|
|
static bool ironlake_compute_wm0(struct drm_device *dev,
|
|
int pipe,
|
|
int *plane_wm,
|
|
int *cursor_wm)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int htotal, hdisplay, clock, pixel_size = 0;
|
|
int line_time_us, line_count, entries;
|
|
|
|
crtc = intel_get_crtc_for_pipe(dev, pipe);
|
|
if (crtc->fb == NULL || !crtc->enabled)
|
|
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) * ILK_LP0_PLANE_LATENCY) / 1000;
|
|
entries = DIV_ROUND_UP(entries,
|
|
ironlake_display_wm_info.cacheline_size);
|
|
*plane_wm = entries + ironlake_display_wm_info.guard_size;
|
|
if (*plane_wm > (int)ironlake_display_wm_info.max_wm)
|
|
*plane_wm = ironlake_display_wm_info.max_wm;
|
|
|
|
/* Use the large buffer method to calculate cursor watermark */
|
|
line_time_us = ((htotal * 1000) / clock);
|
|
line_count = (ILK_LP0_CURSOR_LATENCY / line_time_us + 1000) / 1000;
|
|
entries = line_count * 64 * pixel_size;
|
|
entries = DIV_ROUND_UP(entries,
|
|
ironlake_cursor_wm_info.cacheline_size);
|
|
*cursor_wm = entries + ironlake_cursor_wm_info.guard_size;
|
|
if (*cursor_wm > ironlake_cursor_wm_info.max_wm)
|
|
*cursor_wm = ironlake_cursor_wm_info.max_wm;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void ironlake_update_wm(struct drm_device *dev,
|
|
int planea_clock, int planeb_clock,
|
|
int sr_hdisplay, int sr_htotal,
|
|
int pixel_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int plane_wm, cursor_wm, enabled;
|
|
int tmp;
|
|
|
|
enabled = 0;
|
|
if (ironlake_compute_wm0(dev, 0, &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++;
|
|
}
|
|
|
|
if (ironlake_compute_wm0(dev, 1, &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++;
|
|
}
|
|
|
|
/*
|
|
* Calculate and update the self-refresh watermark only when one
|
|
* display plane is used.
|
|
*/
|
|
tmp = 0;
|
|
if (enabled == 1) {
|
|
unsigned long line_time_us;
|
|
int small, large, plane_fbc;
|
|
int sr_clock, entries;
|
|
int line_count, line_size;
|
|
/* Read the self-refresh latency. The unit is 0.5us */
|
|
int ilk_sr_latency = I915_READ(MLTR_ILK) & ILK_SRLT_MASK;
|
|
|
|
sr_clock = planea_clock ? planea_clock : planeb_clock;
|
|
line_time_us = (sr_htotal * 1000) / sr_clock;
|
|
|
|
/* Use ns/us then divide to preserve precision */
|
|
line_count = ((ilk_sr_latency * 500) / line_time_us + 1000)
|
|
/ 1000;
|
|
line_size = sr_hdisplay * pixel_size;
|
|
|
|
/* Use the minimum of the small and large buffer method for primary */
|
|
small = ((sr_clock * pixel_size / 1000) * (ilk_sr_latency * 500)) / 1000;
|
|
large = line_count * line_size;
|
|
|
|
entries = DIV_ROUND_UP(min(small, large),
|
|
ironlake_display_srwm_info.cacheline_size);
|
|
|
|
plane_fbc = entries * 64;
|
|
plane_fbc = DIV_ROUND_UP(plane_fbc, line_size);
|
|
|
|
plane_wm = entries + ironlake_display_srwm_info.guard_size;
|
|
if (plane_wm > (int)ironlake_display_srwm_info.max_wm)
|
|
plane_wm = ironlake_display_srwm_info.max_wm;
|
|
|
|
/* calculate the self-refresh watermark for display cursor */
|
|
entries = line_count * pixel_size * 64;
|
|
entries = DIV_ROUND_UP(entries,
|
|
ironlake_cursor_srwm_info.cacheline_size);
|
|
|
|
cursor_wm = entries + ironlake_cursor_srwm_info.guard_size;
|
|
if (cursor_wm > (int)ironlake_cursor_srwm_info.max_wm)
|
|
cursor_wm = ironlake_cursor_srwm_info.max_wm;
|
|
|
|
/* configure watermark and enable self-refresh */
|
|
tmp = (WM1_LP_SR_EN |
|
|
(ilk_sr_latency << WM1_LP_LATENCY_SHIFT) |
|
|
(plane_fbc << WM1_LP_FBC_SHIFT) |
|
|
(plane_wm << WM1_LP_SR_SHIFT) |
|
|
cursor_wm);
|
|
DRM_DEBUG_KMS("self-refresh watermark: display plane %d, fbc lines %d,"
|
|
" cursor %d\n", plane_wm, plane_fbc, cursor_wm);
|
|
}
|
|
I915_WRITE(WM1_LP_ILK, tmp);
|
|
/* XXX setup WM2 and WM3 */
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
struct drm_crtc *crtc;
|
|
int sr_hdisplay = 0;
|
|
unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0;
|
|
int enabled = 0, pixel_size = 0;
|
|
int sr_htotal = 0;
|
|
|
|
if (!dev_priv->display.update_wm)
|
|
return;
|
|
|
|
/* Get the clock config from both planes */
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
|
|
if (intel_crtc->active) {
|
|
enabled++;
|
|
if (intel_crtc->plane == 0) {
|
|
DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n",
|
|
intel_crtc->pipe, crtc->mode.clock);
|
|
planea_clock = crtc->mode.clock;
|
|
} else {
|
|
DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n",
|
|
intel_crtc->pipe, crtc->mode.clock);
|
|
planeb_clock = crtc->mode.clock;
|
|
}
|
|
sr_hdisplay = crtc->mode.hdisplay;
|
|
sr_clock = crtc->mode.clock;
|
|
sr_htotal = crtc->mode.htotal;
|
|
if (crtc->fb)
|
|
pixel_size = crtc->fb->bits_per_pixel / 8;
|
|
else
|
|
pixel_size = 4; /* by default */
|
|
}
|
|
}
|
|
|
|
if (enabled <= 0)
|
|
return;
|
|
|
|
dev_priv->display.update_wm(dev, planea_clock, planeb_clock,
|
|
sr_hdisplay, sr_htotal, pixel_size);
|
|
}
|
|
|
|
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 plane = intel_crtc->plane;
|
|
u32 fp_reg, dpll_reg;
|
|
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 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 reg, temp;
|
|
int target_clock;
|
|
|
|
drm_vblank_pre_modeset(dev, pipe);
|
|
|
|
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;
|
|
case INTEL_OUTPUT_EDP:
|
|
has_edp_encoder = encoder;
|
|
break;
|
|
}
|
|
|
|
num_connectors++;
|
|
}
|
|
|
|
if (is_lvds && dev_priv->lvds_use_ssc && 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;
|
|
if (HAS_PCH_SPLIT(dev) &&
|
|
(!has_edp_encoder || intel_encoder_is_pch_edp(&has_edp_encoder->base)))
|
|
refclk = 120000; /* 120Mhz refclk */
|
|
} 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);
|
|
ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
|
|
if (!ok) {
|
|
DRM_ERROR("Couldn't find PLL settings for mode!\n");
|
|
drm_vblank_post_modeset(dev, pipe);
|
|
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 */
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
|
|
int lane = 0, link_bw, bpp;
|
|
/* 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(&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.
|
|
*/
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
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 (dev_priv->lvds_use_ssc) {
|
|
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 (dev_priv->lvds_use_ssc)
|
|
temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
|
|
else
|
|
temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
|
|
} else {
|
|
/* Enable SSC on PCH eDP if needed */
|
|
if (dev_priv->lvds_use_ssc) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* Enable autotuning of the PLL clock (if permissible) */
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
int factor = 21;
|
|
|
|
if (is_lvds) {
|
|
if ((dev_priv->lvds_use_ssc &&
|
|
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 (!HAS_PCH_SPLIT(dev))
|
|
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;
|
|
else if (HAS_PCH_SPLIT(dev))
|
|
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 */
|
|
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;
|
|
/* also FPA1 */
|
|
if (HAS_PCH_SPLIT(dev))
|
|
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_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 && !HAS_PCH_SPLIT(dev))
|
|
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 && dev_priv->lvds_use_ssc && 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 (!HAS_PCH_SPLIT(dev)) {
|
|
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;
|
|
}
|
|
|
|
dspcntr |= DISPLAY_PLANE_ENABLE;
|
|
pipeconf |= PIPECONF_ENABLE;
|
|
dpll |= DPLL_VCO_ENABLE;
|
|
|
|
DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
|
|
drm_mode_debug_printmodeline(mode);
|
|
|
|
/* assign to Ironlake registers */
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
fp_reg = PCH_FP0(pipe);
|
|
dpll_reg = PCH_DPLL(pipe);
|
|
} else {
|
|
fp_reg = FP0(pipe);
|
|
dpll_reg = DPLL(pipe);
|
|
}
|
|
|
|
/* PCH eDP needs FDI, but CPU eDP does not */
|
|
if (!has_edp_encoder || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
I915_WRITE(fp_reg, fp);
|
|
I915_WRITE(dpll_reg, dpll & ~DPLL_VCO_ENABLE);
|
|
|
|
POSTING_READ(dpll_reg);
|
|
udelay(150);
|
|
}
|
|
|
|
/* enable transcoder DPLL */
|
|
if (HAS_PCH_CPT(dev)) {
|
|
temp = I915_READ(PCH_DPLL_SEL);
|
|
if (pipe == 0)
|
|
temp |= TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL;
|
|
else
|
|
temp |= TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL;
|
|
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) {
|
|
reg = LVDS;
|
|
if (HAS_PCH_SPLIT(dev))
|
|
reg = PCH_LVDS;
|
|
|
|
temp = I915_READ(reg);
|
|
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.
|
|
*/
|
|
/* set the dithering flag on non-PCH LVDS as needed */
|
|
if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) {
|
|
if (dev_priv->lvds_dither)
|
|
temp |= LVDS_ENABLE_DITHER;
|
|
else
|
|
temp &= ~LVDS_ENABLE_DITHER;
|
|
}
|
|
I915_WRITE(reg, temp);
|
|
}
|
|
|
|
/* set the dithering flag and clear for anything other than a panel. */
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
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 if (HAS_PCH_SPLIT(dev)) {
|
|
/* For non-DP output, clear any trans DP clock recovery setting.*/
|
|
if (pipe == 0) {
|
|
I915_WRITE(TRANSA_DATA_M1, 0);
|
|
I915_WRITE(TRANSA_DATA_N1, 0);
|
|
I915_WRITE(TRANSA_DP_LINK_M1, 0);
|
|
I915_WRITE(TRANSA_DP_LINK_N1, 0);
|
|
} else {
|
|
I915_WRITE(TRANSB_DATA_M1, 0);
|
|
I915_WRITE(TRANSB_DATA_N1, 0);
|
|
I915_WRITE(TRANSB_DP_LINK_M1, 0);
|
|
I915_WRITE(TRANSB_DP_LINK_N1, 0);
|
|
}
|
|
}
|
|
|
|
if (!has_edp_encoder || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
|
|
I915_WRITE(dpll_reg, dpll);
|
|
|
|
/* Wait for the clocks to stabilize. */
|
|
POSTING_READ(dpll_reg);
|
|
udelay(150);
|
|
|
|
if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) {
|
|
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_reg, dpll);
|
|
}
|
|
}
|
|
|
|
intel_crtc->lowfreq_avail = false;
|
|
if (is_lvds && has_reduced_clock && i915_powersave) {
|
|
I915_WRITE(fp_reg + 4, 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(fp_reg + 4, 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.
|
|
*/
|
|
if (!HAS_PCH_SPLIT(dev)) {
|
|
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));
|
|
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
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);
|
|
|
|
ret = intel_pipe_set_base(crtc, x, y, old_fb);
|
|
|
|
intel_update_watermarks(dev);
|
|
|
|
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 = (intel_crtc->pipe == 0) ? PALETTE_A : PALETTE_B;
|
|
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 = (intel_crtc->pipe == 0) ? LGC_PALETTE_A :
|
|
LGC_PALETTE_B;
|
|
|
|
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(pipe == 0 ? CURACNTR : CURBCNTR);
|
|
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(pipe == 0 ? CURACNTR : CURBCNTR, cntl);
|
|
|
|
intel_crtc->cursor_visible = visible;
|
|
}
|
|
/* and commit changes on next vblank */
|
|
I915_WRITE(pipe == 0 ? CURABASE : CURBBASE, 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(pipe == 0 ? CURAPOS : CURBPOS, 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)
|
|
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(obj, PAGE_SIZE, true);
|
|
if (ret) {
|
|
DRM_ERROR("failed to pin cursor bo\n");
|
|
goto fail_locked;
|
|
}
|
|
|
|
ret = i915_gem_object_set_to_gtt_domain(obj, 0);
|
|
if (ret) {
|
|
DRM_ERROR("failed to move cursor bo into the GTT\n");
|
|
goto fail_unpin;
|
|
}
|
|
|
|
ret = i915_gem_object_put_fence(obj);
|
|
if (ret) {
|
|
DRM_ERROR("failed to move cursor bo into the GTT\n");
|
|
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),
|
|
};
|
|
|
|
struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
|
|
struct drm_connector *connector,
|
|
struct drm_display_mode *mode,
|
|
int *dpms_mode)
|
|
{
|
|
struct intel_crtc *intel_crtc;
|
|
struct drm_crtc *possible_crtc;
|
|
struct drm_crtc *supported_crtc =NULL;
|
|
struct drm_encoder *encoder = &intel_encoder->base;
|
|
struct drm_crtc *crtc = NULL;
|
|
struct drm_device *dev = encoder->dev;
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
|
int i = -1;
|
|
|
|
/*
|
|
* 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
|
|
* - if there are no unused crtcs available, try to use the first
|
|
* one we found that supports the connector
|
|
*/
|
|
|
|
/* See if we already have a CRTC for this connector */
|
|
if (encoder->crtc) {
|
|
crtc = encoder->crtc;
|
|
/* Make sure the crtc and connector are running */
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
*dpms_mode = intel_crtc->dpms_mode;
|
|
if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
|
|
crtc_funcs = crtc->helper_private;
|
|
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
|
|
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
|
|
}
|
|
return crtc;
|
|
}
|
|
|
|
/* 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 (!supported_crtc)
|
|
supported_crtc = possible_crtc;
|
|
}
|
|
|
|
/*
|
|
* If we didn't find an unused CRTC, don't use any.
|
|
*/
|
|
if (!crtc) {
|
|
return NULL;
|
|
}
|
|
|
|
encoder->crtc = crtc;
|
|
connector->encoder = encoder;
|
|
intel_encoder->load_detect_temp = true;
|
|
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
*dpms_mode = intel_crtc->dpms_mode;
|
|
|
|
if (!crtc->enabled) {
|
|
if (!mode)
|
|
mode = &load_detect_mode;
|
|
drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb);
|
|
} else {
|
|
if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
|
|
crtc_funcs = crtc->helper_private;
|
|
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
|
|
}
|
|
|
|
/* Add this connector to the crtc */
|
|
encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode);
|
|
encoder_funcs->commit(encoder);
|
|
}
|
|
/* let the connector get through one full cycle before testing */
|
|
intel_wait_for_vblank(dev, intel_crtc->pipe);
|
|
|
|
return crtc;
|
|
}
|
|
|
|
void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
|
|
struct drm_connector *connector, int dpms_mode)
|
|
{
|
|
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;
|
|
|
|
if (intel_encoder->load_detect_temp) {
|
|
encoder->crtc = NULL;
|
|
connector->encoder = NULL;
|
|
intel_encoder->load_detect_temp = false;
|
|
crtc->enabled = drm_helper_crtc_in_use(crtc);
|
|
drm_helper_disable_unused_functions(dev);
|
|
}
|
|
|
|
/* Switch crtc and encoder back off if necessary */
|
|
if (crtc->enabled && dpms_mode != DRM_MODE_DPMS_ON) {
|
|
if (encoder->crtc == crtc)
|
|
encoder_funcs->dpms(encoder, dpms_mode);
|
|
crtc_funcs->dpms(crtc, 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((pipe == 0) ? DPLL_A : DPLL_B);
|
|
u32 fp;
|
|
intel_clock_t clock;
|
|
|
|
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
|
|
fp = I915_READ((pipe == 0) ? FPA0 : FPB0);
|
|
else
|
|
fp = I915_READ((pipe == 0) ? FPA1 : FPB1);
|
|
|
|
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((pipe == 0) ? HTOTAL_A : HTOTAL_B);
|
|
int hsync = I915_READ((pipe == 0) ? HSYNC_A : HSYNC_B);
|
|
int vtot = I915_READ((pipe == 0) ? VTOTAL_A : VTOTAL_B);
|
|
int vsync = I915_READ((pipe == 0) ? VSYNC_A : VSYNC_B);
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
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 = (pipe == 0) ? DPLL_A : DPLL_B;
|
|
int dpll = I915_READ(dpll_reg);
|
|
|
|
if (HAS_PCH_SPLIT(dev))
|
|
return;
|
|
|
|
if (!dev_priv->lvds_downclock_avail)
|
|
return;
|
|
|
|
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);
|
|
dpll = I915_READ(dpll_reg);
|
|
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 = (pipe == 0) ? DPLL_A : DPLL_B;
|
|
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);
|
|
dpll = I915_READ(dpll_reg);
|
|
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;
|
|
int enabled = 0;
|
|
|
|
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;
|
|
|
|
enabled++;
|
|
intel_crtc = to_intel_crtc(crtc);
|
|
if (!intel_crtc->busy)
|
|
intel_decrease_pllclock(crtc);
|
|
}
|
|
|
|
if ((enabled == 1) && (IS_I945G(dev) || IS_I945GM(dev))) {
|
|
DRM_DEBUG_DRIVER("enable memory self refresh on 945\n");
|
|
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
|
|
}
|
|
|
|
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) {
|
|
if (IS_I945G(dev) || IS_I945GM(dev)) {
|
|
u32 fw_blc_self;
|
|
|
|
DRM_DEBUG_DRIVER("disable memory self refresh on 945\n");
|
|
fw_blc_self = I915_READ(FW_BLC_SELF);
|
|
fw_blc_self &= ~FW_BLC_SELF_EN;
|
|
I915_WRITE(FW_BLC_SELF, fw_blc_self | FW_BLC_SELF_EN_MASK);
|
|
}
|
|
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) {
|
|
if (IS_I945G(dev) || IS_I945GM(dev)) {
|
|
u32 fw_blc_self;
|
|
|
|
DRM_DEBUG_DRIVER("disable memory self refresh on 945\n");
|
|
fw_blc_self = I915_READ(FW_BLC_SELF);
|
|
fw_blc_self &= ~FW_BLC_SELF_EN;
|
|
I915_WRITE(FW_BLC_SELF, fw_blc_self | FW_BLC_SELF_EN_MASK);
|
|
}
|
|
/* 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 now;
|
|
unsigned long flags;
|
|
|
|
/* Ignore early vblank irqs */
|
|
if (intel_crtc == NULL)
|
|
return;
|
|
|
|
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;
|
|
drm_vblank_put(dev, intel_crtc->pipe);
|
|
|
|
if (work->event) {
|
|
e = work->event;
|
|
do_gettimeofday(&now);
|
|
e->event.sequence = drm_vblank_count(dev, intel_crtc->pipe);
|
|
e->event.tv_sec = now.tv_sec;
|
|
e->event.tv_usec = now.tv_usec;
|
|
list_add_tail(&e->base.link,
|
|
&e->base.file_priv->event_list);
|
|
wake_up_interruptible(&e->base.file_priv->event_wait);
|
|
}
|
|
|
|
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_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, offset;
|
|
int pipe = intel_crtc->pipe;
|
|
u32 pf, pipesrc;
|
|
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);
|
|
ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
|
|
if (ret)
|
|
goto cleanup_work;
|
|
|
|
/* 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;
|
|
|
|
if (IS_GEN3(dev) || IS_GEN2(dev)) {
|
|
u32 flip_mask;
|
|
|
|
/* Can't queue multiple flips, so wait for the previous
|
|
* one to finish before executing the next.
|
|
*/
|
|
ret = BEGIN_LP_RING(2);
|
|
if (ret)
|
|
goto cleanup_objs;
|
|
|
|
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);
|
|
ADVANCE_LP_RING();
|
|
}
|
|
|
|
work->pending_flip_obj = obj;
|
|
|
|
work->enable_stall_check = true;
|
|
|
|
/* 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(4);
|
|
if (ret)
|
|
goto cleanup_objs;
|
|
|
|
/* 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);
|
|
|
|
switch (INTEL_INFO(dev)->gen) {
|
|
case 2:
|
|
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);
|
|
break;
|
|
|
|
case 3:
|
|
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);
|
|
break;
|
|
|
|
case 4:
|
|
case 5:
|
|
/* 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(pipe == 0 ? PIPEASRC : PIPEBSRC) & 0x0fff0fff;
|
|
OUT_RING(pf | pipesrc);
|
|
break;
|
|
|
|
case 6:
|
|
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(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
|
|
pipesrc = I915_READ(pipe == 0 ? PIPEASRC : PIPEBSRC) & 0x0fff0fff;
|
|
OUT_RING(pf | pipesrc);
|
|
break;
|
|
}
|
|
ADVANCE_LP_RING();
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
trace_i915_flip_request(intel_crtc->plane, obj);
|
|
|
|
return 0;
|
|
|
|
cleanup_objs:
|
|
drm_gem_object_unreference(&work->old_fb_obj->base);
|
|
drm_gem_object_unreference(&obj->base);
|
|
cleanup_work:
|
|
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 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 = {
|
|
.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_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. */
|
|
I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
|
|
intel_flush_display_plane(dev, plane);
|
|
|
|
if (IS_GEN2(dev))
|
|
intel_wait_for_vblank(dev, pipe);
|
|
|
|
if (pipe == 0 && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
|
|
return;
|
|
|
|
/* Switch off the pipe. */
|
|
reg = PIPECONF(pipe);
|
|
val = I915_READ(reg);
|
|
if (val & PIPECONF_ENABLE) {
|
|
I915_WRITE(reg, val & ~PIPECONF_ENABLE);
|
|
intel_wait_for_pipe_off(dev, pipe);
|
|
}
|
|
}
|
|
|
|
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->cursor_addr = 0;
|
|
intel_crtc->dpms_mode = -1;
|
|
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);
|
|
|
|
intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
|
|
}
|
|
|
|
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 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 (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED))
|
|
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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
struct intel_framebuffer *intel_fb;
|
|
int ret;
|
|
|
|
obj = to_intel_bo(drm_gem_object_lookup(dev, filp, mode_cmd->handle));
|
|
if (!obj)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
|
|
if (!intel_fb)
|
|
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 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;
|
|
|
|
ctx = i915_gem_alloc_object(dev, 4096);
|
|
if (!ctx) {
|
|
DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
|
|
return NULL;
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
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;
|
|
}
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
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 intel_enable_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
/*
|
|
* Disable clock gating reported to work incorrectly according to the
|
|
* specs, but enable as much else as we can.
|
|
*/
|
|
if (HAS_PCH_SPLIT(dev)) {
|
|
uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
|
|
|
|
if (IS_GEN5(dev)) {
|
|
/* Required for FBC */
|
|
dspclk_gate |= 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_DSPCLK_GATE_D, dspclk_gate);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
if (IS_GEN5(dev)) {
|
|
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);
|
|
|
|
if (IS_GEN5(dev)) {
|
|
I915_WRITE(_3D_CHICKEN2,
|
|
_3D_CHICKEN2_WM_READ_PIPELINED << 16 |
|
|
_3D_CHICKEN2_WM_READ_PIPELINED);
|
|
}
|
|
} else if (IS_G4X(dev)) {
|
|
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);
|
|
} else if (IS_CRESTLINE(dev)) {
|
|
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);
|
|
} else if (IS_BROADWATER(dev)) {
|
|
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);
|
|
} else if (IS_GEN3(dev)) {
|
|
u32 dstate = I915_READ(D_STATE);
|
|
|
|
dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
|
|
DSTATE_DOT_CLOCK_GATING;
|
|
I915_WRITE(D_STATE, dstate);
|
|
} else if (IS_I85X(dev) || IS_I865G(dev)) {
|
|
I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
|
|
} else if (IS_I830(dev)) {
|
|
I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
|
|
}
|
|
|
|
/*
|
|
* GPU can automatically power down the render unit if given a page
|
|
* to save state.
|
|
*/
|
|
if (IS_IRONLAKE_M(dev)) {
|
|
if (dev_priv->renderctx == NULL)
|
|
dev_priv->renderctx = intel_alloc_context_page(dev);
|
|
if (dev_priv->renderctx) {
|
|
struct drm_i915_gem_object *obj = dev_priv->renderctx;
|
|
if (BEGIN_LP_RING(4) == 0) {
|
|
OUT_RING(MI_SET_CONTEXT);
|
|
OUT_RING(obj->gtt_offset |
|
|
MI_MM_SPACE_GTT |
|
|
MI_SAVE_EXT_STATE_EN |
|
|
MI_RESTORE_EXT_STATE_EN |
|
|
MI_RESTORE_INHIBIT);
|
|
OUT_RING(MI_NOOP);
|
|
OUT_RING(MI_FLUSH);
|
|
ADVANCE_LP_RING();
|
|
}
|
|
} else
|
|
DRM_DEBUG_KMS("Failed to allocate render context."
|
|
"Disable RC6\n");
|
|
}
|
|
|
|
if (IS_GEN4(dev) && IS_MOBILE(dev)) {
|
|
if (dev_priv->pwrctx == NULL)
|
|
dev_priv->pwrctx = intel_alloc_context_page(dev);
|
|
if (dev_priv->pwrctx) {
|
|
struct drm_i915_gem_object *obj = dev_priv->pwrctx;
|
|
I915_WRITE(PWRCTXA, obj->gtt_offset | PWRCTX_EN);
|
|
I915_WRITE(MCHBAR_RENDER_STANDBY,
|
|
I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
|
|
}
|
|
}
|
|
}
|
|
|
|
void intel_disable_clock_gating(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (dev_priv->renderctx) {
|
|
struct drm_i915_gem_object *obj = dev_priv->renderctx;
|
|
|
|
I915_WRITE(CCID, 0);
|
|
POSTING_READ(CCID);
|
|
|
|
i915_gem_object_unpin(obj);
|
|
drm_gem_object_unreference(&obj->base);
|
|
dev_priv->renderctx = NULL;
|
|
}
|
|
|
|
if (dev_priv->pwrctx) {
|
|
struct drm_i915_gem_object *obj = dev_priv->pwrctx;
|
|
|
|
I915_WRITE(PWRCTXA, 0);
|
|
POSTING_READ(PWRCTXA);
|
|
|
|
i915_gem_object_unpin(obj);
|
|
drm_gem_object_unreference(&obj->base);
|
|
dev_priv->pwrctx = NULL;
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
else
|
|
dev_priv->display.dpms = i9xx_crtc_dpms;
|
|
|
|
if (I915_HAS_FBC(dev)) {
|
|
if (IS_IRONLAKE_M(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 (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;
|
|
}
|
|
} 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;
|
|
} else if (IS_G4X(dev))
|
|
dev_priv->display.update_wm = g4x_update_wm;
|
|
else if (IS_GEN4(dev))
|
|
dev_priv->display.update_wm = i965_update_wm;
|
|
else if (IS_GEN3(dev)) {
|
|
dev_priv->display.update_wm = i9xx_update_wm;
|
|
dev_priv->display.get_fifo_size = i9xx_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;
|
|
} else {
|
|
dev_priv->display.update_wm = i830_update_wm;
|
|
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;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/* set memory base */
|
|
if (IS_GEN2(dev))
|
|
dev->mode_config.fb_base = pci_resource_start(dev->pdev, 0);
|
|
else
|
|
dev->mode_config.fb_base = pci_resource_start(dev->pdev, 2);
|
|
|
|
if (IS_MOBILE(dev) || !IS_GEN2(dev))
|
|
dev_priv->num_pipe = 2;
|
|
else
|
|
dev_priv->num_pipe = 1;
|
|
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);
|
|
}
|
|
|
|
intel_setup_outputs(dev);
|
|
|
|
intel_enable_clock_gating(dev);
|
|
|
|
/* Just disable it once at startup */
|
|
i915_disable_vga(dev);
|
|
|
|
if (IS_IRONLAKE_M(dev)) {
|
|
ironlake_enable_drps(dev);
|
|
intel_init_emon(dev);
|
|
}
|
|
|
|
INIT_WORK(&dev_priv->idle_work, intel_idle_update);
|
|
setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
|
|
(unsigned long)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);
|
|
|
|
intel_disable_clock_gating(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
|