![Daniel Vetter](/assets/img/avatar_default.png)
It's dead code, the core handles all this directly now. The only special case is nouveau and tda988x which used one function for both legacy modeset code and -nv50 atomic world instead of 2 vtables. But amounts to exactly the same. v2: Rebase over the panel/brideg refactorings in stm/ltdc. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Archit Taneja <architt@codeaurora.org> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Peter Senna Tschudin <peter.senna@collabora.com> Cc: Martin Donnelly <martin.donnelly@ge.com> Cc: Martyn Welch <martyn.welch@collabora.co.uk> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Inki Dae <inki.dae@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Stefan Agner <stefan@agner.ch> Cc: Alison Wang <alison.wang@freescale.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: CK Hu <ck.hu@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Carlo Caione <carlo@caione.org> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Marek Vasut <marex@denx.de> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Eric Anholt <eric@anholt.net> Cc: Mark Yao <mark.yao@rock-chips.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Cc: Yannick Fertre <yannick.fertre@st.com> Cc: Philippe Cornu <philippe.cornu@st.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Jyri Sarha <jsarha@ti.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Cc: Jeffy Chen <jeffy.chen@rock-chips.com> Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Cc: Yakir Yang <kuankuan.y@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Jose Abreu <Jose.Abreu@synopsys.com> Cc: Romain Perier <romain.perier@collabora.com> Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Cc: Xinliang Liu <z.liuxinliang@hisilicon.com> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Rongrong Zou <zourongrong@gmail.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Hai Li <hali@codeaurora.org> Cc: "Noralf Trønnes" <noralf@tronnes.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org Cc: linux-mediatek@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: nouveau@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-tegra@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Cc: zain wang <wzz@rock-chips.com> Cc: Baoyou Xie <baoyou.xie@linaro.org> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-8-daniel.vetter@ffwll.ch Acked-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Archit Taneja <architt@codeaurora.org> Tested-by: Philippe Cornu <philippe.cornu@st.com> (on stm) Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Vincent Abriou <vincent.abriou@st.com>
1207 lines
29 KiB
C
1207 lines
29 KiB
C
/*
|
|
* Copyright (c) 2015 MediaTek Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_mipi_dsi.h>
|
|
#include <drm/drm_panel.h>
|
|
#include <drm/drm_of.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/component.h>
|
|
#include <linux/iopoll.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/phy/phy.h>
|
|
#include <linux/platform_device.h>
|
|
#include <video/mipi_display.h>
|
|
#include <video/videomode.h>
|
|
|
|
#include "mtk_drm_ddp_comp.h"
|
|
|
|
#define DSI_START 0x00
|
|
|
|
#define DSI_INTEN 0x08
|
|
|
|
#define DSI_INTSTA 0x0c
|
|
#define LPRX_RD_RDY_INT_FLAG BIT(0)
|
|
#define CMD_DONE_INT_FLAG BIT(1)
|
|
#define TE_RDY_INT_FLAG BIT(2)
|
|
#define VM_DONE_INT_FLAG BIT(3)
|
|
#define EXT_TE_RDY_INT_FLAG BIT(4)
|
|
#define DSI_BUSY BIT(31)
|
|
|
|
#define DSI_CON_CTRL 0x10
|
|
#define DSI_RESET BIT(0)
|
|
#define DSI_EN BIT(1)
|
|
|
|
#define DSI_MODE_CTRL 0x14
|
|
#define MODE (3)
|
|
#define CMD_MODE 0
|
|
#define SYNC_PULSE_MODE 1
|
|
#define SYNC_EVENT_MODE 2
|
|
#define BURST_MODE 3
|
|
#define FRM_MODE BIT(16)
|
|
#define MIX_MODE BIT(17)
|
|
|
|
#define DSI_TXRX_CTRL 0x18
|
|
#define VC_NUM BIT(1)
|
|
#define LANE_NUM (0xf << 2)
|
|
#define DIS_EOT BIT(6)
|
|
#define NULL_EN BIT(7)
|
|
#define TE_FREERUN BIT(8)
|
|
#define EXT_TE_EN BIT(9)
|
|
#define EXT_TE_EDGE BIT(10)
|
|
#define MAX_RTN_SIZE (0xf << 12)
|
|
#define HSTX_CKLP_EN BIT(16)
|
|
|
|
#define DSI_PSCTRL 0x1c
|
|
#define DSI_PS_WC 0x3fff
|
|
#define DSI_PS_SEL (3 << 16)
|
|
#define PACKED_PS_16BIT_RGB565 (0 << 16)
|
|
#define LOOSELY_PS_18BIT_RGB666 (1 << 16)
|
|
#define PACKED_PS_18BIT_RGB666 (2 << 16)
|
|
#define PACKED_PS_24BIT_RGB888 (3 << 16)
|
|
|
|
#define DSI_VSA_NL 0x20
|
|
#define DSI_VBP_NL 0x24
|
|
#define DSI_VFP_NL 0x28
|
|
#define DSI_VACT_NL 0x2C
|
|
#define DSI_HSA_WC 0x50
|
|
#define DSI_HBP_WC 0x54
|
|
#define DSI_HFP_WC 0x58
|
|
|
|
#define DSI_CMDQ_SIZE 0x60
|
|
#define CMDQ_SIZE 0x3f
|
|
|
|
#define DSI_HSTX_CKL_WC 0x64
|
|
|
|
#define DSI_RX_DATA0 0x74
|
|
#define DSI_RX_DATA1 0x78
|
|
#define DSI_RX_DATA2 0x7c
|
|
#define DSI_RX_DATA3 0x80
|
|
|
|
#define DSI_RACK 0x84
|
|
#define RACK BIT(0)
|
|
|
|
#define DSI_PHY_LCCON 0x104
|
|
#define LC_HS_TX_EN BIT(0)
|
|
#define LC_ULPM_EN BIT(1)
|
|
#define LC_WAKEUP_EN BIT(2)
|
|
|
|
#define DSI_PHY_LD0CON 0x108
|
|
#define LD0_HS_TX_EN BIT(0)
|
|
#define LD0_ULPM_EN BIT(1)
|
|
#define LD0_WAKEUP_EN BIT(2)
|
|
|
|
#define DSI_PHY_TIMECON0 0x110
|
|
#define LPX (0xff << 0)
|
|
#define HS_PREP (0xff << 8)
|
|
#define HS_ZERO (0xff << 16)
|
|
#define HS_TRAIL (0xff << 24)
|
|
|
|
#define DSI_PHY_TIMECON1 0x114
|
|
#define TA_GO (0xff << 0)
|
|
#define TA_SURE (0xff << 8)
|
|
#define TA_GET (0xff << 16)
|
|
#define DA_HS_EXIT (0xff << 24)
|
|
|
|
#define DSI_PHY_TIMECON2 0x118
|
|
#define CONT_DET (0xff << 0)
|
|
#define CLK_ZERO (0xff << 16)
|
|
#define CLK_TRAIL (0xff << 24)
|
|
|
|
#define DSI_PHY_TIMECON3 0x11c
|
|
#define CLK_HS_PREP (0xff << 0)
|
|
#define CLK_HS_POST (0xff << 8)
|
|
#define CLK_HS_EXIT (0xff << 16)
|
|
|
|
#define DSI_VM_CMD_CON 0x130
|
|
#define VM_CMD_EN BIT(0)
|
|
#define TS_VFP_EN BIT(5)
|
|
|
|
#define DSI_CMDQ0 0x180
|
|
#define CONFIG (0xff << 0)
|
|
#define SHORT_PACKET 0
|
|
#define LONG_PACKET 2
|
|
#define BTA BIT(2)
|
|
#define DATA_ID (0xff << 8)
|
|
#define DATA_0 (0xff << 16)
|
|
#define DATA_1 (0xff << 24)
|
|
|
|
#define T_LPX 5
|
|
#define T_HS_PREP 6
|
|
#define T_HS_TRAIL 8
|
|
#define T_HS_EXIT 7
|
|
#define T_HS_ZERO 10
|
|
|
|
#define NS_TO_CYCLE(n, c) ((n) / (c) + (((n) % (c)) ? 1 : 0))
|
|
|
|
#define MTK_DSI_HOST_IS_READ(type) \
|
|
((type == MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM) || \
|
|
(type == MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM) || \
|
|
(type == MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM) || \
|
|
(type == MIPI_DSI_DCS_READ))
|
|
|
|
struct phy;
|
|
|
|
struct mtk_dsi {
|
|
struct mtk_ddp_comp ddp_comp;
|
|
struct device *dev;
|
|
struct mipi_dsi_host host;
|
|
struct drm_encoder encoder;
|
|
struct drm_connector conn;
|
|
struct drm_panel *panel;
|
|
struct drm_bridge *bridge;
|
|
struct phy *phy;
|
|
|
|
void __iomem *regs;
|
|
|
|
struct clk *engine_clk;
|
|
struct clk *digital_clk;
|
|
struct clk *hs_clk;
|
|
|
|
u32 data_rate;
|
|
|
|
unsigned long mode_flags;
|
|
enum mipi_dsi_pixel_format format;
|
|
unsigned int lanes;
|
|
struct videomode vm;
|
|
int refcount;
|
|
bool enabled;
|
|
u32 irq_data;
|
|
wait_queue_head_t irq_wait_queue;
|
|
};
|
|
|
|
static inline struct mtk_dsi *encoder_to_dsi(struct drm_encoder *e)
|
|
{
|
|
return container_of(e, struct mtk_dsi, encoder);
|
|
}
|
|
|
|
static inline struct mtk_dsi *connector_to_dsi(struct drm_connector *c)
|
|
{
|
|
return container_of(c, struct mtk_dsi, conn);
|
|
}
|
|
|
|
static inline struct mtk_dsi *host_to_dsi(struct mipi_dsi_host *h)
|
|
{
|
|
return container_of(h, struct mtk_dsi, host);
|
|
}
|
|
|
|
static void mtk_dsi_mask(struct mtk_dsi *dsi, u32 offset, u32 mask, u32 data)
|
|
{
|
|
u32 temp = readl(dsi->regs + offset);
|
|
|
|
writel((temp & ~mask) | (data & mask), dsi->regs + offset);
|
|
}
|
|
|
|
static void mtk_dsi_phy_timconfig(struct mtk_dsi *dsi)
|
|
{
|
|
u32 timcon0, timcon1, timcon2, timcon3;
|
|
u32 ui, cycle_time;
|
|
|
|
ui = 1000 / dsi->data_rate + 0x01;
|
|
cycle_time = 8000 / dsi->data_rate + 0x01;
|
|
|
|
timcon0 = T_LPX | T_HS_PREP << 8 | T_HS_ZERO << 16 | T_HS_TRAIL << 24;
|
|
timcon1 = 4 * T_LPX | (3 * T_LPX / 2) << 8 | 5 * T_LPX << 16 |
|
|
T_HS_EXIT << 24;
|
|
timcon2 = ((NS_TO_CYCLE(0x64, cycle_time) + 0xa) << 24) |
|
|
(NS_TO_CYCLE(0x150, cycle_time) << 16);
|
|
timcon3 = NS_TO_CYCLE(0x40, cycle_time) | (2 * T_LPX) << 16 |
|
|
NS_TO_CYCLE(80 + 52 * ui, cycle_time) << 8;
|
|
|
|
writel(timcon0, dsi->regs + DSI_PHY_TIMECON0);
|
|
writel(timcon1, dsi->regs + DSI_PHY_TIMECON1);
|
|
writel(timcon2, dsi->regs + DSI_PHY_TIMECON2);
|
|
writel(timcon3, dsi->regs + DSI_PHY_TIMECON3);
|
|
}
|
|
|
|
static void mtk_dsi_enable(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_EN, DSI_EN);
|
|
}
|
|
|
|
static void mtk_dsi_disable(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_EN, 0);
|
|
}
|
|
|
|
static void mtk_dsi_reset_engine(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, DSI_RESET);
|
|
mtk_dsi_mask(dsi, DSI_CON_CTRL, DSI_RESET, 0);
|
|
}
|
|
|
|
static void mtk_dsi_clk_ulp_mode_enter(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0);
|
|
}
|
|
|
|
static void mtk_dsi_clk_ulp_mode_leave(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_ULPM_EN, 0);
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_WAKEUP_EN, LC_WAKEUP_EN);
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_WAKEUP_EN, 0);
|
|
}
|
|
|
|
static void mtk_dsi_lane0_ulp_mode_enter(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_HS_TX_EN, 0);
|
|
mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0);
|
|
}
|
|
|
|
static void mtk_dsi_lane0_ulp_mode_leave(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_ULPM_EN, 0);
|
|
mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_WAKEUP_EN, LD0_WAKEUP_EN);
|
|
mtk_dsi_mask(dsi, DSI_PHY_LD0CON, LD0_WAKEUP_EN, 0);
|
|
}
|
|
|
|
static bool mtk_dsi_clk_hs_state(struct mtk_dsi *dsi)
|
|
{
|
|
u32 tmp_reg1;
|
|
|
|
tmp_reg1 = readl(dsi->regs + DSI_PHY_LCCON);
|
|
return ((tmp_reg1 & LC_HS_TX_EN) == 1) ? true : false;
|
|
}
|
|
|
|
static void mtk_dsi_clk_hs_mode(struct mtk_dsi *dsi, bool enter)
|
|
{
|
|
if (enter && !mtk_dsi_clk_hs_state(dsi))
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, LC_HS_TX_EN);
|
|
else if (!enter && mtk_dsi_clk_hs_state(dsi))
|
|
mtk_dsi_mask(dsi, DSI_PHY_LCCON, LC_HS_TX_EN, 0);
|
|
}
|
|
|
|
static void mtk_dsi_set_mode(struct mtk_dsi *dsi)
|
|
{
|
|
u32 vid_mode = CMD_MODE;
|
|
|
|
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
|
|
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
|
|
vid_mode = BURST_MODE;
|
|
else if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
|
|
vid_mode = SYNC_PULSE_MODE;
|
|
else
|
|
vid_mode = SYNC_EVENT_MODE;
|
|
}
|
|
|
|
writel(vid_mode, dsi->regs + DSI_MODE_CTRL);
|
|
}
|
|
|
|
static void mtk_dsi_set_vm_cmd(struct mtk_dsi *dsi)
|
|
{
|
|
mtk_dsi_mask(dsi, DSI_VM_CMD_CON, VM_CMD_EN, VM_CMD_EN);
|
|
mtk_dsi_mask(dsi, DSI_VM_CMD_CON, TS_VFP_EN, TS_VFP_EN);
|
|
}
|
|
|
|
static void mtk_dsi_ps_control_vact(struct mtk_dsi *dsi)
|
|
{
|
|
struct videomode *vm = &dsi->vm;
|
|
u32 dsi_buf_bpp, ps_wc;
|
|
u32 ps_bpp_mode;
|
|
|
|
if (dsi->format == MIPI_DSI_FMT_RGB565)
|
|
dsi_buf_bpp = 2;
|
|
else
|
|
dsi_buf_bpp = 3;
|
|
|
|
ps_wc = vm->hactive * dsi_buf_bpp;
|
|
ps_bpp_mode = ps_wc;
|
|
|
|
switch (dsi->format) {
|
|
case MIPI_DSI_FMT_RGB888:
|
|
ps_bpp_mode |= PACKED_PS_24BIT_RGB888;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB666:
|
|
ps_bpp_mode |= PACKED_PS_18BIT_RGB666;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB666_PACKED:
|
|
ps_bpp_mode |= LOOSELY_PS_18BIT_RGB666;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB565:
|
|
ps_bpp_mode |= PACKED_PS_16BIT_RGB565;
|
|
break;
|
|
}
|
|
|
|
writel(vm->vactive, dsi->regs + DSI_VACT_NL);
|
|
writel(ps_bpp_mode, dsi->regs + DSI_PSCTRL);
|
|
writel(ps_wc, dsi->regs + DSI_HSTX_CKL_WC);
|
|
}
|
|
|
|
static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi)
|
|
{
|
|
u32 tmp_reg;
|
|
|
|
switch (dsi->lanes) {
|
|
case 1:
|
|
tmp_reg = 1 << 2;
|
|
break;
|
|
case 2:
|
|
tmp_reg = 3 << 2;
|
|
break;
|
|
case 3:
|
|
tmp_reg = 7 << 2;
|
|
break;
|
|
case 4:
|
|
tmp_reg = 0xf << 2;
|
|
break;
|
|
default:
|
|
tmp_reg = 0xf << 2;
|
|
break;
|
|
}
|
|
|
|
tmp_reg |= (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) << 6;
|
|
tmp_reg |= (dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET) >> 3;
|
|
|
|
writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL);
|
|
}
|
|
|
|
static void mtk_dsi_ps_control(struct mtk_dsi *dsi)
|
|
{
|
|
u32 dsi_tmp_buf_bpp;
|
|
u32 tmp_reg;
|
|
|
|
switch (dsi->format) {
|
|
case MIPI_DSI_FMT_RGB888:
|
|
tmp_reg = PACKED_PS_24BIT_RGB888;
|
|
dsi_tmp_buf_bpp = 3;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB666:
|
|
tmp_reg = LOOSELY_PS_18BIT_RGB666;
|
|
dsi_tmp_buf_bpp = 3;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB666_PACKED:
|
|
tmp_reg = PACKED_PS_18BIT_RGB666;
|
|
dsi_tmp_buf_bpp = 3;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB565:
|
|
tmp_reg = PACKED_PS_16BIT_RGB565;
|
|
dsi_tmp_buf_bpp = 2;
|
|
break;
|
|
default:
|
|
tmp_reg = PACKED_PS_24BIT_RGB888;
|
|
dsi_tmp_buf_bpp = 3;
|
|
break;
|
|
}
|
|
|
|
tmp_reg += dsi->vm.hactive * dsi_tmp_buf_bpp & DSI_PS_WC;
|
|
writel(tmp_reg, dsi->regs + DSI_PSCTRL);
|
|
}
|
|
|
|
static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
|
|
{
|
|
u32 horizontal_sync_active_byte;
|
|
u32 horizontal_backporch_byte;
|
|
u32 horizontal_frontporch_byte;
|
|
u32 dsi_tmp_buf_bpp;
|
|
|
|
struct videomode *vm = &dsi->vm;
|
|
|
|
if (dsi->format == MIPI_DSI_FMT_RGB565)
|
|
dsi_tmp_buf_bpp = 2;
|
|
else
|
|
dsi_tmp_buf_bpp = 3;
|
|
|
|
writel(vm->vsync_len, dsi->regs + DSI_VSA_NL);
|
|
writel(vm->vback_porch, dsi->regs + DSI_VBP_NL);
|
|
writel(vm->vfront_porch, dsi->regs + DSI_VFP_NL);
|
|
writel(vm->vactive, dsi->regs + DSI_VACT_NL);
|
|
|
|
horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10);
|
|
|
|
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
|
|
horizontal_backporch_byte =
|
|
(vm->hback_porch * dsi_tmp_buf_bpp - 10);
|
|
else
|
|
horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) *
|
|
dsi_tmp_buf_bpp - 10);
|
|
|
|
horizontal_frontporch_byte = (vm->hfront_porch * dsi_tmp_buf_bpp - 12);
|
|
|
|
writel(horizontal_sync_active_byte, dsi->regs + DSI_HSA_WC);
|
|
writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC);
|
|
writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC);
|
|
|
|
mtk_dsi_ps_control(dsi);
|
|
}
|
|
|
|
static void mtk_dsi_start(struct mtk_dsi *dsi)
|
|
{
|
|
writel(0, dsi->regs + DSI_START);
|
|
writel(1, dsi->regs + DSI_START);
|
|
}
|
|
|
|
static void mtk_dsi_stop(struct mtk_dsi *dsi)
|
|
{
|
|
writel(0, dsi->regs + DSI_START);
|
|
}
|
|
|
|
static void mtk_dsi_set_cmd_mode(struct mtk_dsi *dsi)
|
|
{
|
|
writel(CMD_MODE, dsi->regs + DSI_MODE_CTRL);
|
|
}
|
|
|
|
static void mtk_dsi_set_interrupt_enable(struct mtk_dsi *dsi)
|
|
{
|
|
u32 inten = LPRX_RD_RDY_INT_FLAG | CMD_DONE_INT_FLAG | VM_DONE_INT_FLAG;
|
|
|
|
writel(inten, dsi->regs + DSI_INTEN);
|
|
}
|
|
|
|
static void mtk_dsi_irq_data_set(struct mtk_dsi *dsi, u32 irq_bit)
|
|
{
|
|
dsi->irq_data |= irq_bit;
|
|
}
|
|
|
|
static void mtk_dsi_irq_data_clear(struct mtk_dsi *dsi, u32 irq_bit)
|
|
{
|
|
dsi->irq_data &= ~irq_bit;
|
|
}
|
|
|
|
static s32 mtk_dsi_wait_for_irq_done(struct mtk_dsi *dsi, u32 irq_flag,
|
|
unsigned int timeout)
|
|
{
|
|
s32 ret = 0;
|
|
unsigned long jiffies = msecs_to_jiffies(timeout);
|
|
|
|
ret = wait_event_interruptible_timeout(dsi->irq_wait_queue,
|
|
dsi->irq_data & irq_flag,
|
|
jiffies);
|
|
if (ret == 0) {
|
|
DRM_WARN("Wait DSI IRQ(0x%08x) Timeout\n", irq_flag);
|
|
|
|
mtk_dsi_enable(dsi);
|
|
mtk_dsi_reset_engine(dsi);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t mtk_dsi_irq(int irq, void *dev_id)
|
|
{
|
|
struct mtk_dsi *dsi = dev_id;
|
|
u32 status, tmp;
|
|
u32 flag = LPRX_RD_RDY_INT_FLAG | CMD_DONE_INT_FLAG | VM_DONE_INT_FLAG;
|
|
|
|
status = readl(dsi->regs + DSI_INTSTA) & flag;
|
|
|
|
if (status) {
|
|
do {
|
|
mtk_dsi_mask(dsi, DSI_RACK, RACK, RACK);
|
|
tmp = readl(dsi->regs + DSI_INTSTA);
|
|
} while (tmp & DSI_BUSY);
|
|
|
|
mtk_dsi_mask(dsi, DSI_INTSTA, status, 0);
|
|
mtk_dsi_irq_data_set(dsi, status);
|
|
wake_up_interruptible(&dsi->irq_wait_queue);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static s32 mtk_dsi_switch_to_cmd_mode(struct mtk_dsi *dsi, u8 irq_flag, u32 t)
|
|
{
|
|
mtk_dsi_irq_data_clear(dsi, irq_flag);
|
|
mtk_dsi_set_cmd_mode(dsi);
|
|
|
|
if (!mtk_dsi_wait_for_irq_done(dsi, irq_flag, t)) {
|
|
DRM_ERROR("failed to switch cmd mode\n");
|
|
return -ETIME;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int mtk_dsi_poweron(struct mtk_dsi *dsi)
|
|
{
|
|
struct device *dev = dsi->dev;
|
|
int ret;
|
|
u64 pixel_clock, total_bits;
|
|
u32 htotal, htotal_bits, bit_per_pixel, overhead_cycles, overhead_bits;
|
|
|
|
if (++dsi->refcount != 1)
|
|
return 0;
|
|
|
|
switch (dsi->format) {
|
|
case MIPI_DSI_FMT_RGB565:
|
|
bit_per_pixel = 16;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB666_PACKED:
|
|
bit_per_pixel = 18;
|
|
break;
|
|
case MIPI_DSI_FMT_RGB666:
|
|
case MIPI_DSI_FMT_RGB888:
|
|
default:
|
|
bit_per_pixel = 24;
|
|
break;
|
|
}
|
|
|
|
/**
|
|
* vm.pixelclock is in kHz, pixel_clock unit is Hz, so multiply by 1000
|
|
* htotal_time = htotal * byte_per_pixel / num_lanes
|
|
* overhead_time = lpx + hs_prepare + hs_zero + hs_trail + hs_exit
|
|
* mipi_ratio = (htotal_time + overhead_time) / htotal_time
|
|
* data_rate = pixel_clock * bit_per_pixel * mipi_ratio / num_lanes;
|
|
*/
|
|
pixel_clock = dsi->vm.pixelclock * 1000;
|
|
htotal = dsi->vm.hactive + dsi->vm.hback_porch + dsi->vm.hfront_porch +
|
|
dsi->vm.hsync_len;
|
|
htotal_bits = htotal * bit_per_pixel;
|
|
|
|
overhead_cycles = T_LPX + T_HS_PREP + T_HS_ZERO + T_HS_TRAIL +
|
|
T_HS_EXIT;
|
|
overhead_bits = overhead_cycles * dsi->lanes * 8;
|
|
total_bits = htotal_bits + overhead_bits;
|
|
|
|
dsi->data_rate = DIV_ROUND_UP_ULL(pixel_clock * total_bits,
|
|
htotal * dsi->lanes);
|
|
|
|
ret = clk_set_rate(dsi->hs_clk, dsi->data_rate);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to set data rate: %d\n", ret);
|
|
goto err_refcount;
|
|
}
|
|
|
|
phy_power_on(dsi->phy);
|
|
|
|
ret = clk_prepare_enable(dsi->engine_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable engine clock: %d\n", ret);
|
|
goto err_phy_power_off;
|
|
}
|
|
|
|
ret = clk_prepare_enable(dsi->digital_clk);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to enable digital clock: %d\n", ret);
|
|
goto err_disable_engine_clk;
|
|
}
|
|
|
|
mtk_dsi_enable(dsi);
|
|
mtk_dsi_reset_engine(dsi);
|
|
mtk_dsi_phy_timconfig(dsi);
|
|
|
|
mtk_dsi_rxtx_control(dsi);
|
|
mtk_dsi_ps_control_vact(dsi);
|
|
mtk_dsi_set_vm_cmd(dsi);
|
|
mtk_dsi_config_vdo_timing(dsi);
|
|
mtk_dsi_set_interrupt_enable(dsi);
|
|
|
|
mtk_dsi_clk_ulp_mode_leave(dsi);
|
|
mtk_dsi_lane0_ulp_mode_leave(dsi);
|
|
mtk_dsi_clk_hs_mode(dsi, 0);
|
|
|
|
if (dsi->panel) {
|
|
if (drm_panel_prepare(dsi->panel)) {
|
|
DRM_ERROR("failed to prepare the panel\n");
|
|
goto err_disable_digital_clk;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
err_disable_digital_clk:
|
|
clk_disable_unprepare(dsi->digital_clk);
|
|
err_disable_engine_clk:
|
|
clk_disable_unprepare(dsi->engine_clk);
|
|
err_phy_power_off:
|
|
phy_power_off(dsi->phy);
|
|
err_refcount:
|
|
dsi->refcount--;
|
|
return ret;
|
|
}
|
|
|
|
static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
|
|
{
|
|
if (WARN_ON(dsi->refcount == 0))
|
|
return;
|
|
|
|
if (--dsi->refcount != 0)
|
|
return;
|
|
|
|
if (!mtk_dsi_switch_to_cmd_mode(dsi, VM_DONE_INT_FLAG, 500)) {
|
|
if (dsi->panel) {
|
|
if (drm_panel_unprepare(dsi->panel)) {
|
|
DRM_ERROR("failed to unprepare the panel\n");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
mtk_dsi_reset_engine(dsi);
|
|
mtk_dsi_lane0_ulp_mode_enter(dsi);
|
|
mtk_dsi_clk_ulp_mode_enter(dsi);
|
|
|
|
mtk_dsi_disable(dsi);
|
|
|
|
clk_disable_unprepare(dsi->engine_clk);
|
|
clk_disable_unprepare(dsi->digital_clk);
|
|
|
|
phy_power_off(dsi->phy);
|
|
}
|
|
|
|
static void mtk_output_dsi_enable(struct mtk_dsi *dsi)
|
|
{
|
|
int ret;
|
|
|
|
if (dsi->enabled)
|
|
return;
|
|
|
|
ret = mtk_dsi_poweron(dsi);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to power on dsi\n");
|
|
return;
|
|
}
|
|
|
|
mtk_dsi_set_mode(dsi);
|
|
mtk_dsi_clk_hs_mode(dsi, 1);
|
|
|
|
mtk_dsi_start(dsi);
|
|
|
|
if (dsi->panel) {
|
|
if (drm_panel_enable(dsi->panel)) {
|
|
DRM_ERROR("failed to enable the panel\n");
|
|
goto err_dsi_power_off;
|
|
}
|
|
}
|
|
|
|
dsi->enabled = true;
|
|
|
|
return;
|
|
err_dsi_power_off:
|
|
mtk_dsi_stop(dsi);
|
|
mtk_dsi_poweroff(dsi);
|
|
}
|
|
|
|
static void mtk_output_dsi_disable(struct mtk_dsi *dsi)
|
|
{
|
|
if (!dsi->enabled)
|
|
return;
|
|
|
|
if (dsi->panel) {
|
|
if (drm_panel_disable(dsi->panel)) {
|
|
DRM_ERROR("failed to disable the panel\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
mtk_dsi_stop(dsi);
|
|
mtk_dsi_poweroff(dsi);
|
|
|
|
dsi->enabled = false;
|
|
}
|
|
|
|
static void mtk_dsi_encoder_destroy(struct drm_encoder *encoder)
|
|
{
|
|
drm_encoder_cleanup(encoder);
|
|
}
|
|
|
|
static const struct drm_encoder_funcs mtk_dsi_encoder_funcs = {
|
|
.destroy = mtk_dsi_encoder_destroy,
|
|
};
|
|
|
|
static bool mtk_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void mtk_dsi_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted)
|
|
{
|
|
struct mtk_dsi *dsi = encoder_to_dsi(encoder);
|
|
|
|
dsi->vm.pixelclock = adjusted->clock;
|
|
dsi->vm.hactive = adjusted->hdisplay;
|
|
dsi->vm.hback_porch = adjusted->htotal - adjusted->hsync_end;
|
|
dsi->vm.hfront_porch = adjusted->hsync_start - adjusted->hdisplay;
|
|
dsi->vm.hsync_len = adjusted->hsync_end - adjusted->hsync_start;
|
|
|
|
dsi->vm.vactive = adjusted->vdisplay;
|
|
dsi->vm.vback_porch = adjusted->vtotal - adjusted->vsync_end;
|
|
dsi->vm.vfront_porch = adjusted->vsync_start - adjusted->vdisplay;
|
|
dsi->vm.vsync_len = adjusted->vsync_end - adjusted->vsync_start;
|
|
}
|
|
|
|
static void mtk_dsi_encoder_disable(struct drm_encoder *encoder)
|
|
{
|
|
struct mtk_dsi *dsi = encoder_to_dsi(encoder);
|
|
|
|
mtk_output_dsi_disable(dsi);
|
|
}
|
|
|
|
static void mtk_dsi_encoder_enable(struct drm_encoder *encoder)
|
|
{
|
|
struct mtk_dsi *dsi = encoder_to_dsi(encoder);
|
|
|
|
mtk_output_dsi_enable(dsi);
|
|
}
|
|
|
|
static int mtk_dsi_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct mtk_dsi *dsi = connector_to_dsi(connector);
|
|
|
|
return drm_panel_get_modes(dsi->panel);
|
|
}
|
|
|
|
static const struct drm_encoder_helper_funcs mtk_dsi_encoder_helper_funcs = {
|
|
.mode_fixup = mtk_dsi_encoder_mode_fixup,
|
|
.mode_set = mtk_dsi_encoder_mode_set,
|
|
.disable = mtk_dsi_encoder_disable,
|
|
.enable = mtk_dsi_encoder_enable,
|
|
};
|
|
|
|
static const struct drm_connector_funcs mtk_dsi_connector_funcs = {
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = drm_connector_cleanup,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static const struct drm_connector_helper_funcs
|
|
mtk_dsi_connector_helper_funcs = {
|
|
.get_modes = mtk_dsi_connector_get_modes,
|
|
};
|
|
|
|
static int mtk_dsi_create_connector(struct drm_device *drm, struct mtk_dsi *dsi)
|
|
{
|
|
int ret;
|
|
|
|
ret = drm_connector_init(drm, &dsi->conn, &mtk_dsi_connector_funcs,
|
|
DRM_MODE_CONNECTOR_DSI);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to connector init to drm\n");
|
|
return ret;
|
|
}
|
|
|
|
drm_connector_helper_add(&dsi->conn, &mtk_dsi_connector_helper_funcs);
|
|
|
|
dsi->conn.dpms = DRM_MODE_DPMS_OFF;
|
|
drm_mode_connector_attach_encoder(&dsi->conn, &dsi->encoder);
|
|
|
|
if (dsi->panel) {
|
|
ret = drm_panel_attach(dsi->panel, &dsi->conn);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to attach panel to drm\n");
|
|
goto err_connector_cleanup;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_connector_cleanup:
|
|
drm_connector_cleanup(&dsi->conn);
|
|
return ret;
|
|
}
|
|
|
|
static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi)
|
|
{
|
|
int ret;
|
|
|
|
ret = drm_encoder_init(drm, &dsi->encoder, &mtk_dsi_encoder_funcs,
|
|
DRM_MODE_ENCODER_DSI, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to encoder init to drm\n");
|
|
return ret;
|
|
}
|
|
drm_encoder_helper_add(&dsi->encoder, &mtk_dsi_encoder_helper_funcs);
|
|
|
|
/*
|
|
* Currently display data paths are statically assigned to a crtc each.
|
|
* crtc 0 is OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0
|
|
*/
|
|
dsi->encoder.possible_crtcs = 1;
|
|
|
|
/* If there's a bridge, attach to it and let it create the connector */
|
|
ret = drm_bridge_attach(&dsi->encoder, dsi->bridge, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to attach bridge to drm\n");
|
|
|
|
/* Otherwise create our own connector and attach to a panel */
|
|
ret = mtk_dsi_create_connector(drm, dsi);
|
|
if (ret)
|
|
goto err_encoder_cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_encoder_cleanup:
|
|
drm_encoder_cleanup(&dsi->encoder);
|
|
return ret;
|
|
}
|
|
|
|
static void mtk_dsi_destroy_conn_enc(struct mtk_dsi *dsi)
|
|
{
|
|
drm_encoder_cleanup(&dsi->encoder);
|
|
/* Skip connector cleanup if creation was delegated to the bridge */
|
|
if (dsi->conn.dev)
|
|
drm_connector_cleanup(&dsi->conn);
|
|
}
|
|
|
|
static void mtk_dsi_ddp_start(struct mtk_ddp_comp *comp)
|
|
{
|
|
struct mtk_dsi *dsi = container_of(comp, struct mtk_dsi, ddp_comp);
|
|
|
|
mtk_dsi_poweron(dsi);
|
|
}
|
|
|
|
static void mtk_dsi_ddp_stop(struct mtk_ddp_comp *comp)
|
|
{
|
|
struct mtk_dsi *dsi = container_of(comp, struct mtk_dsi, ddp_comp);
|
|
|
|
mtk_dsi_poweroff(dsi);
|
|
}
|
|
|
|
static const struct mtk_ddp_comp_funcs mtk_dsi_funcs = {
|
|
.start = mtk_dsi_ddp_start,
|
|
.stop = mtk_dsi_ddp_stop,
|
|
};
|
|
|
|
static int mtk_dsi_host_attach(struct mipi_dsi_host *host,
|
|
struct mipi_dsi_device *device)
|
|
{
|
|
struct mtk_dsi *dsi = host_to_dsi(host);
|
|
|
|
dsi->lanes = device->lanes;
|
|
dsi->format = device->format;
|
|
dsi->mode_flags = device->mode_flags;
|
|
|
|
if (dsi->conn.dev)
|
|
drm_helper_hpd_irq_event(dsi->conn.dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_dsi_host_detach(struct mipi_dsi_host *host,
|
|
struct mipi_dsi_device *device)
|
|
{
|
|
struct mtk_dsi *dsi = host_to_dsi(host);
|
|
|
|
if (dsi->conn.dev)
|
|
drm_helper_hpd_irq_event(dsi->conn.dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mtk_dsi_wait_for_idle(struct mtk_dsi *dsi)
|
|
{
|
|
int ret;
|
|
u32 val;
|
|
|
|
ret = readl_poll_timeout(dsi->regs + DSI_INTSTA, val, !(val & DSI_BUSY),
|
|
4, 2000000);
|
|
if (ret) {
|
|
DRM_WARN("polling dsi wait not busy timeout!\n");
|
|
|
|
mtk_dsi_enable(dsi);
|
|
mtk_dsi_reset_engine(dsi);
|
|
}
|
|
}
|
|
|
|
static u32 mtk_dsi_recv_cnt(u8 type, u8 *read_data)
|
|
{
|
|
switch (type) {
|
|
case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE:
|
|
case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE:
|
|
return 1;
|
|
case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE:
|
|
case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE:
|
|
return 2;
|
|
case MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE:
|
|
case MIPI_DSI_RX_DCS_LONG_READ_RESPONSE:
|
|
return read_data[1] + read_data[2] * 16;
|
|
case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT:
|
|
DRM_INFO("type is 0x02, try again\n");
|
|
break;
|
|
default:
|
|
DRM_INFO("type(0x%x) not recognized\n", type);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
|
|
{
|
|
const char *tx_buf = msg->tx_buf;
|
|
u8 config, cmdq_size, cmdq_off, type = msg->type;
|
|
u32 reg_val, cmdq_mask, i;
|
|
|
|
if (MTK_DSI_HOST_IS_READ(type))
|
|
config = BTA;
|
|
else
|
|
config = (msg->tx_len > 2) ? LONG_PACKET : SHORT_PACKET;
|
|
|
|
if (msg->tx_len > 2) {
|
|
cmdq_size = 1 + (msg->tx_len + 3) / 4;
|
|
cmdq_off = 4;
|
|
cmdq_mask = CONFIG | DATA_ID | DATA_0 | DATA_1;
|
|
reg_val = (msg->tx_len << 16) | (type << 8) | config;
|
|
} else {
|
|
cmdq_size = 1;
|
|
cmdq_off = 2;
|
|
cmdq_mask = CONFIG | DATA_ID;
|
|
reg_val = (type << 8) | config;
|
|
}
|
|
|
|
for (i = 0; i < msg->tx_len; i++)
|
|
writeb(tx_buf[i], dsi->regs + DSI_CMDQ0 + cmdq_off + i);
|
|
|
|
mtk_dsi_mask(dsi, DSI_CMDQ0, cmdq_mask, reg_val);
|
|
mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
|
|
}
|
|
|
|
static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
|
|
const struct mipi_dsi_msg *msg, u8 flag)
|
|
{
|
|
mtk_dsi_wait_for_idle(dsi);
|
|
mtk_dsi_irq_data_clear(dsi, flag);
|
|
mtk_dsi_cmdq(dsi, msg);
|
|
mtk_dsi_start(dsi);
|
|
|
|
if (!mtk_dsi_wait_for_irq_done(dsi, flag, 2000))
|
|
return -ETIME;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t mtk_dsi_host_transfer(struct mipi_dsi_host *host,
|
|
const struct mipi_dsi_msg *msg)
|
|
{
|
|
struct mtk_dsi *dsi = host_to_dsi(host);
|
|
u32 recv_cnt, i;
|
|
u8 read_data[16];
|
|
void *src_addr;
|
|
u8 irq_flag = CMD_DONE_INT_FLAG;
|
|
|
|
if (readl(dsi->regs + DSI_MODE_CTRL) & MODE) {
|
|
DRM_ERROR("dsi engine is not command mode\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (MTK_DSI_HOST_IS_READ(msg->type))
|
|
irq_flag |= LPRX_RD_RDY_INT_FLAG;
|
|
|
|
if (mtk_dsi_host_send_cmd(dsi, msg, irq_flag) < 0)
|
|
return -ETIME;
|
|
|
|
if (!MTK_DSI_HOST_IS_READ(msg->type))
|
|
return 0;
|
|
|
|
if (!msg->rx_buf) {
|
|
DRM_ERROR("dsi receive buffer size may be NULL\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < 16; i++)
|
|
*(read_data + i) = readb(dsi->regs + DSI_RX_DATA0 + i);
|
|
|
|
recv_cnt = mtk_dsi_recv_cnt(read_data[0], read_data);
|
|
|
|
if (recv_cnt > 2)
|
|
src_addr = &read_data[4];
|
|
else
|
|
src_addr = &read_data[1];
|
|
|
|
if (recv_cnt > 10)
|
|
recv_cnt = 10;
|
|
|
|
if (recv_cnt > msg->rx_len)
|
|
recv_cnt = msg->rx_len;
|
|
|
|
if (recv_cnt)
|
|
memcpy(msg->rx_buf, src_addr, recv_cnt);
|
|
|
|
DRM_INFO("dsi get %d byte data from the panel address(0x%x)\n",
|
|
recv_cnt, *((u8 *)(msg->tx_buf)));
|
|
|
|
return recv_cnt;
|
|
}
|
|
|
|
static const struct mipi_dsi_host_ops mtk_dsi_ops = {
|
|
.attach = mtk_dsi_host_attach,
|
|
.detach = mtk_dsi_host_detach,
|
|
.transfer = mtk_dsi_host_transfer,
|
|
};
|
|
|
|
static int mtk_dsi_bind(struct device *dev, struct device *master, void *data)
|
|
{
|
|
int ret;
|
|
struct drm_device *drm = data;
|
|
struct mtk_dsi *dsi = dev_get_drvdata(dev);
|
|
|
|
ret = mtk_ddp_comp_register(drm, &dsi->ddp_comp);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to register component %pOF: %d\n",
|
|
dev->of_node, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = mipi_dsi_host_register(&dsi->host);
|
|
if (ret < 0) {
|
|
dev_err(dev, "failed to register DSI host: %d\n", ret);
|
|
goto err_ddp_comp_unregister;
|
|
}
|
|
|
|
ret = mtk_dsi_create_conn_enc(drm, dsi);
|
|
if (ret) {
|
|
DRM_ERROR("Encoder create failed with %d\n", ret);
|
|
goto err_unregister;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_unregister:
|
|
mipi_dsi_host_unregister(&dsi->host);
|
|
err_ddp_comp_unregister:
|
|
mtk_ddp_comp_unregister(drm, &dsi->ddp_comp);
|
|
return ret;
|
|
}
|
|
|
|
static void mtk_dsi_unbind(struct device *dev, struct device *master,
|
|
void *data)
|
|
{
|
|
struct drm_device *drm = data;
|
|
struct mtk_dsi *dsi = dev_get_drvdata(dev);
|
|
|
|
mtk_dsi_destroy_conn_enc(dsi);
|
|
mipi_dsi_host_unregister(&dsi->host);
|
|
mtk_ddp_comp_unregister(drm, &dsi->ddp_comp);
|
|
}
|
|
|
|
static const struct component_ops mtk_dsi_component_ops = {
|
|
.bind = mtk_dsi_bind,
|
|
.unbind = mtk_dsi_unbind,
|
|
};
|
|
|
|
static int mtk_dsi_probe(struct platform_device *pdev)
|
|
{
|
|
struct mtk_dsi *dsi;
|
|
struct device *dev = &pdev->dev;
|
|
struct resource *regs;
|
|
int irq_num;
|
|
int comp_id;
|
|
int ret;
|
|
|
|
dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
|
|
if (!dsi)
|
|
return -ENOMEM;
|
|
|
|
dsi->host.ops = &mtk_dsi_ops;
|
|
dsi->host.dev = dev;
|
|
|
|
ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
|
|
&dsi->panel, &dsi->bridge);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dsi->engine_clk = devm_clk_get(dev, "engine");
|
|
if (IS_ERR(dsi->engine_clk)) {
|
|
ret = PTR_ERR(dsi->engine_clk);
|
|
dev_err(dev, "Failed to get engine clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dsi->digital_clk = devm_clk_get(dev, "digital");
|
|
if (IS_ERR(dsi->digital_clk)) {
|
|
ret = PTR_ERR(dsi->digital_clk);
|
|
dev_err(dev, "Failed to get digital clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dsi->hs_clk = devm_clk_get(dev, "hs");
|
|
if (IS_ERR(dsi->hs_clk)) {
|
|
ret = PTR_ERR(dsi->hs_clk);
|
|
dev_err(dev, "Failed to get hs clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
dsi->regs = devm_ioremap_resource(dev, regs);
|
|
if (IS_ERR(dsi->regs)) {
|
|
ret = PTR_ERR(dsi->regs);
|
|
dev_err(dev, "Failed to ioremap memory: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dsi->phy = devm_phy_get(dev, "dphy");
|
|
if (IS_ERR(dsi->phy)) {
|
|
ret = PTR_ERR(dsi->phy);
|
|
dev_err(dev, "Failed to get MIPI-DPHY: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DSI);
|
|
if (comp_id < 0) {
|
|
dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
|
|
return comp_id;
|
|
}
|
|
|
|
ret = mtk_ddp_comp_init(dev, dev->of_node, &dsi->ddp_comp, comp_id,
|
|
&mtk_dsi_funcs);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to initialize component: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
irq_num = platform_get_irq(pdev, 0);
|
|
if (irq_num < 0) {
|
|
dev_err(&pdev->dev, "failed to request dsi irq resource\n");
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
irq_set_status_flags(irq_num, IRQ_TYPE_LEVEL_LOW);
|
|
ret = devm_request_irq(&pdev->dev, irq_num, mtk_dsi_irq,
|
|
IRQF_TRIGGER_LOW, dev_name(&pdev->dev), dsi);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to request mediatek dsi irq\n");
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
init_waitqueue_head(&dsi->irq_wait_queue);
|
|
|
|
platform_set_drvdata(pdev, dsi);
|
|
|
|
return component_add(&pdev->dev, &mtk_dsi_component_ops);
|
|
}
|
|
|
|
static int mtk_dsi_remove(struct platform_device *pdev)
|
|
{
|
|
struct mtk_dsi *dsi = platform_get_drvdata(pdev);
|
|
|
|
mtk_output_dsi_disable(dsi);
|
|
component_del(&pdev->dev, &mtk_dsi_component_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id mtk_dsi_of_match[] = {
|
|
{ .compatible = "mediatek,mt2701-dsi" },
|
|
{ .compatible = "mediatek,mt8173-dsi" },
|
|
{ },
|
|
};
|
|
|
|
struct platform_driver mtk_dsi_driver = {
|
|
.probe = mtk_dsi_probe,
|
|
.remove = mtk_dsi_remove,
|
|
.driver = {
|
|
.name = "mtk-dsi",
|
|
.of_match_table = mtk_dsi_of_match,
|
|
},
|
|
};
|