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ff57c65138
The original HiKey (620) board has had a long running issue where when using a 1080p montior, the display would occasionally blink and come come back with a horizontal offset (usually also shifting the colors, depending on the value of the offset%4). After lots of analysis by HiSi developers, they found the issue was due to when running at 1080p, it was possible to hit the device memory bandwidth limits, which could cause the DSI signal to get out of sync. Unfortunately the DSI logic doesn't have the ability to automatically recover from this situation, but we can get a an LDI underflow interrupt when it happens. To then correct the issue, when we get an LDI underflow irq, we we can simply suspend and resume the display, which resets the hardware. Thus, this patch enables the ldi underflow interrupt, and initializes a workqueue that is used to suspend/resume the display to recover. Then when the irq occurs we clear it and schedule the workqueue to reset display engine. Cc: Rongrong Zou <zourongrong@gmail.com> Cc: Xinliang Liu <z.liuxinliang@hisilicon.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: dri-devel <dri-devel@lists.freedesktop.org> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Da Lv <lvda3@hisilicon.com> Signed-off-by: Yidong Lin <linyidong@huawei.com> [jstultz: Reworded the commit message, checkpatch cleanups] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190820230626.23253-2-john.stultz@linaro.org
228 lines
4.9 KiB
C
228 lines
4.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2016 Linaro Limited.
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* Copyright (c) 2014-2016 Hisilicon Limited.
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*/
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#ifndef __KIRIN_ADE_REG_H__
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#define __KIRIN_ADE_REG_H__
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/*
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* ADE Registers
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*/
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#define MASK(x) (BIT(x) - 1)
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#define ADE_CTRL 0x0004
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#define FRM_END_START_OFST 0
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#define FRM_END_START_MASK MASK(2)
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#define AUTO_CLK_GATE_EN_OFST 0
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#define AUTO_CLK_GATE_EN BIT(0)
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#define ADE_DISP_SRC_CFG 0x0018
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#define ADE_CTRL1 0x008C
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#define ADE_EN 0x0100
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#define ADE_DISABLE 0
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#define ADE_ENABLE 1
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/* reset and reload regs */
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#define ADE_SOFT_RST_SEL(x) (0x0078 + (x) * 0x4)
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#define ADE_RELOAD_DIS(x) (0x00AC + (x) * 0x4)
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#define RDMA_OFST 0
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#define CLIP_OFST 15
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#define SCL_OFST 21
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#define CTRAN_OFST 24
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#define OVLY_OFST 37 /* 32+5 */
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/* channel regs */
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#define RD_CH_CTRL(x) (0x1004 + (x) * 0x80)
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#define RD_CH_ADDR(x) (0x1008 + (x) * 0x80)
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#define RD_CH_SIZE(x) (0x100C + (x) * 0x80)
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#define RD_CH_STRIDE(x) (0x1010 + (x) * 0x80)
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#define RD_CH_SPACE(x) (0x1014 + (x) * 0x80)
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#define RD_CH_EN(x) (0x1020 + (x) * 0x80)
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/* overlay regs */
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#define ADE_OVLY1_TRANS_CFG 0x002C
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#define ADE_OVLY_CTL 0x0098
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#define ADE_OVLY_CH_XY0(x) (0x2004 + (x) * 4)
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#define ADE_OVLY_CH_XY1(x) (0x2024 + (x) * 4)
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#define ADE_OVLY_CH_CTL(x) (0x204C + (x) * 4)
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#define ADE_OVLY_OUTPUT_SIZE(x) (0x2070 + (x) * 8)
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#define OUTPUT_XSIZE_OFST 16
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#define ADE_OVLYX_CTL(x) (0x209C + (x) * 4)
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#define CH_OVLY_SEL_OFST(x) ((x) * 4)
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#define CH_OVLY_SEL_MASK MASK(2)
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#define CH_OVLY_SEL_VAL(x) ((x) + 1)
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#define CH_ALP_MODE_OFST 0
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#define CH_ALP_SEL_OFST 2
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#define CH_UNDER_ALP_SEL_OFST 4
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#define CH_EN_OFST 6
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#define CH_ALP_GBL_OFST 15
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#define CH_SEL_OFST 28
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/* ctran regs */
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#define ADE_CTRAN_DIS(x) (0x5004 + (x) * 0x100)
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#define CTRAN_BYPASS_ON 1
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#define CTRAN_BYPASS_OFF 0
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#define ADE_CTRAN_IMAGE_SIZE(x) (0x503C + (x) * 0x100)
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/* clip regs */
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#define ADE_CLIP_DISABLE(x) (0x6800 + (x) * 0x100)
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#define ADE_CLIP_SIZE0(x) (0x6804 + (x) * 0x100)
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#define ADE_CLIP_SIZE1(x) (0x6808 + (x) * 0x100)
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/*
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* LDI Registers
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*/
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#define LDI_HRZ_CTRL0 0x7400
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#define HBP_OFST 20
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#define LDI_HRZ_CTRL1 0x7404
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#define LDI_VRT_CTRL0 0x7408
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#define VBP_OFST 20
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#define LDI_VRT_CTRL1 0x740C
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#define LDI_PLR_CTRL 0x7410
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#define FLAG_NVSYNC BIT(0)
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#define FLAG_NHSYNC BIT(1)
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#define FLAG_NPIXCLK BIT(2)
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#define FLAG_NDE BIT(3)
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#define LDI_DSP_SIZE 0x7414
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#define VSIZE_OFST 20
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#define LDI_INT_EN 0x741C
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#define FRAME_END_INT_EN_OFST 1
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#define UNDERFLOW_INT_EN_OFST 2
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#define LDI_CTRL 0x7420
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#define BPP_OFST 3
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#define DATA_GATE_EN BIT(2)
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#define LDI_EN BIT(0)
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#define LDI_MSK_INT 0x7428
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#define LDI_INT_CLR 0x742C
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#define LDI_WORK_MODE 0x7430
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#define LDI_HDMI_DSI_GT 0x7434
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/*
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* ADE media bus service regs
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*/
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#define ADE0_QOSGENERATOR_MODE 0x010C
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#define QOSGENERATOR_MODE_MASK MASK(2)
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#define ADE0_QOSGENERATOR_EXTCONTROL 0x0118
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#define SOCKET_QOS_EN BIT(0)
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#define ADE1_QOSGENERATOR_MODE 0x020C
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#define ADE1_QOSGENERATOR_EXTCONTROL 0x0218
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/*
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* ADE regs relevant enums
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*/
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enum frame_end_start {
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/* regs take effect in every vsync */
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REG_EFFECTIVE_IN_VSYNC = 0,
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/* regs take effect in fist ade en and every frame end */
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REG_EFFECTIVE_IN_ADEEN_FRMEND,
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/* regs take effect in ade en immediately */
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REG_EFFECTIVE_IN_ADEEN,
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/* regs take effect in first vsync and every frame end */
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REG_EFFECTIVE_IN_VSYNC_FRMEND
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};
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enum ade_fb_format {
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ADE_RGB_565 = 0,
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ADE_BGR_565,
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ADE_XRGB_8888,
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ADE_XBGR_8888,
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ADE_ARGB_8888,
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ADE_ABGR_8888,
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ADE_RGBA_8888,
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ADE_BGRA_8888,
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ADE_RGB_888,
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ADE_BGR_888 = 9,
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ADE_FORMAT_UNSUPPORT = 800
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};
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enum ade_channel {
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ADE_CH1 = 0, /* channel 1 for primary plane */
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ADE_CH_NUM
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};
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enum ade_scale {
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ADE_SCL1 = 0,
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ADE_SCL2,
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ADE_SCL3,
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ADE_SCL_NUM
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};
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enum ade_ctran {
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ADE_CTRAN1 = 0,
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ADE_CTRAN2,
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ADE_CTRAN3,
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ADE_CTRAN4,
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ADE_CTRAN5,
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ADE_CTRAN6,
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ADE_CTRAN_NUM
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};
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enum ade_overlay {
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ADE_OVLY1 = 0,
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ADE_OVLY2,
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ADE_OVLY3,
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ADE_OVLY_NUM
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};
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enum ade_alpha_mode {
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ADE_ALP_GLOBAL = 0,
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ADE_ALP_PIXEL,
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ADE_ALP_PIXEL_AND_GLB
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};
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enum ade_alpha_blending_mode {
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ADE_ALP_MUL_COEFF_0 = 0, /* alpha */
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ADE_ALP_MUL_COEFF_1, /* 1-alpha */
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ADE_ALP_MUL_COEFF_2, /* 0 */
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ADE_ALP_MUL_COEFF_3 /* 1 */
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};
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/*
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* LDI regs relevant enums
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*/
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enum dsi_pclk_en {
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DSI_PCLK_ON = 0,
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DSI_PCLK_OFF
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};
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enum ldi_output_format {
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LDI_OUT_RGB_565 = 0,
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LDI_OUT_RGB_666,
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LDI_OUT_RGB_888
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};
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enum ldi_work_mode {
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TEST_MODE = 0,
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NORMAL_MODE
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};
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enum ldi_input_source {
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DISP_SRC_NONE = 0,
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DISP_SRC_OVLY2,
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DISP_SRC_DISP,
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DISP_SRC_ROT,
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DISP_SRC_SCL2
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};
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/*
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* ADE media bus service relevant enums
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*/
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enum qos_generator_mode {
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FIXED_MODE = 0,
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LIMITER_MODE,
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BYPASS_MODE,
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REGULATOR_MODE
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};
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/*
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* Register Write/Read Helper functions
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*/
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static inline void ade_update_bits(void __iomem *addr, u32 bit_start,
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u32 mask, u32 val)
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{
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u32 tmp, orig;
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orig = readl(addr);
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tmp = orig & ~(mask << bit_start);
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tmp |= (val & mask) << bit_start;
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writel(tmp, addr);
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}
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#endif
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