On Tue, May 21, 2024 at 06:58:11PM +0800, keith wrote:
> add hardware base api for vs drm


Commit message is nearly missing. Please describe your hardware.

> 
> Signed-off-by: keith <keith.z...@starfivetech.com>

Full name please

> ---
>  MAINTAINERS                            |    1 +
>  drivers/gpu/drm/Kconfig                |    2 +
>  drivers/gpu/drm/Makefile               |    1 +
>  drivers/gpu/drm/verisilicon/Kconfig    |   13 +
>  drivers/gpu/drm/verisilicon/Makefile   |    5 +
>  drivers/gpu/drm/verisilicon/vs_dc_hw.c | 1060 ++++++++++++++++++++++++
>  drivers/gpu/drm/verisilicon/vs_dc_hw.h |  493 +++++++++++
>  drivers/gpu/drm/verisilicon/vs_type.h  |   84 ++
>  8 files changed, 1659 insertions(+)
>  create mode 100644 drivers/gpu/drm/verisilicon/Kconfig
>  create mode 100644 drivers/gpu/drm/verisilicon/Makefile
>  create mode 100644 drivers/gpu/drm/verisilicon/vs_dc_hw.c
>  create mode 100644 drivers/gpu/drm/verisilicon/vs_dc_hw.h
>  create mode 100644 drivers/gpu/drm/verisilicon/vs_type.h
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index cf2d66f88a83..9cb376f76f74 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -7156,6 +7156,7 @@ T:      git 
> https://gitlab.freedesktop.org/drm/misc/kernel.git
>  F:   
> Documentation/devicetree/bindings/display/bridge/innosilicon,inno-hdmi.yaml
>  F:   Documentation/devicetree/bindings/display/starfive/
>  F:   drivers/gpu/drm/bridge/innosilicon/
> +F:   drivers/gpu/drm/verisilicon
>  F:   include/drm/bridge/inno_hdmi.h
>  
>  DRM DRIVER FOR SYNAPTICS R63353 PANELS
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 026444eeb5c6..5413d87ef1d6 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -423,6 +423,8 @@ source "drivers/gpu/drm/sprd/Kconfig"
>  
>  source "drivers/gpu/drm/imagination/Kconfig"
>  
> +source "drivers/gpu/drm/verisilicon/Kconfig"
> +
>  config DRM_HYPERV
>       tristate "DRM Support for Hyper-V synthetic video device"
>       depends on DRM && PCI && MMU && HYPERV
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index f9ca4f8fa6c5..cb27092b1672 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -219,3 +219,4 @@ obj-y                     += solomon/
>  obj-$(CONFIG_DRM_SPRD) += sprd/
>  obj-$(CONFIG_DRM_LOONGSON) += loongson/
>  obj-$(CONFIG_DRM_POWERVR) += imagination/
> +obj-$(CONFIG_DRM_VERISILICON_DC8200) += verisilicon/
> diff --git a/drivers/gpu/drm/verisilicon/Kconfig 
> b/drivers/gpu/drm/verisilicon/Kconfig
> new file mode 100644
> index 000000000000..2d733f93439e
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/Kconfig
> @@ -0,0 +1,13 @@
> +# SPDX-License-Identifier: GPL-2.0
> +config DRM_VERISILICON_DC8200
> +     tristate "DRM Support for VeriSilicon DC8200"
> +     depends on DRM
> +     select DRM_KMS_HELPER
> +     select DRM_GEM_DMA_HELPER
> +     select CMA
> +     select DMA_CMA
> +     help
> +       Choose this option if you have a VeriSilicon DC8200 chipset.
> +       This driver provides VeriSilicon kernel mode
> +       setting and buffer management. It does not
> +       provide 2D or 3D acceleration.
> diff --git a/drivers/gpu/drm/verisilicon/Makefile 
> b/drivers/gpu/drm/verisilicon/Makefile
> new file mode 100644
> index 000000000000..7da54b259940
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/Makefile
> @@ -0,0 +1,5 @@
> +# SPDX-License-Identifier: GPL-2.0
> +
> +vs_drm-objs := vs_dc_hw.o
> +
> +obj-$(CONFIG_DRM_VERISILICON_DC8200) += vs_drm.o
> diff --git a/drivers/gpu/drm/verisilicon/vs_dc_hw.c 
> b/drivers/gpu/drm/verisilicon/vs_dc_hw.c
> new file mode 100644
> index 000000000000..69f020f8352f
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_dc_hw.c
> @@ -0,0 +1,1060 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.

No changes in 2024?

> + */
> +
> +#include <linux/bits.h>
> +#include <linux/io.h>
> +#include <linux/media-bus-format.h>
> +//#include <drm/drm_atomic_helper.h>

Either uncomment or drop.

> +#include <drm/drm_blend.h>
> +#include <drm/drm_fourcc.h>
> +#include <drm/drm_framebuffer.h>
> +#include <drm/drm_fb_dma_helper.h>
> +
> +#include "vs_dc_hw.h"
> +
> +static const u32 horkernel[] = {
> +     0x00000000, 0x20000000, 0x00002000, 0x00000000,
> +     0x00000000, 0x00000000, 0x23fd1c03, 0x00000000,
> +     0x00000000, 0x00000000, 0x181f0000, 0x000027e1,
> +     0x00000000, 0x00000000, 0x00000000, 0x2b981468,
> +     0x00000000, 0x00000000, 0x00000000, 0x10f00000,
> +     0x00002f10, 0x00000000, 0x00000000, 0x00000000,
> +     0x32390dc7, 0x00000000, 0x00000000, 0x00000000,
> +     0x0af50000, 0x0000350b, 0x00000000, 0x00000000,
> +     0x00000000, 0x3781087f, 0x00000000, 0x00000000,
> +     0x00000000, 0x06660000, 0x0000399a, 0x00000000,
> +     0x00000000, 0x00000000, 0x3b5904a7, 0x00000000,
> +     0x00000000, 0x00000000, 0x033c0000, 0x00003cc4,
> +     0x00000000, 0x00000000, 0x00000000, 0x3de1021f,
> +     0x00000000, 0x00000000, 0x00000000, 0x01470000,
> +     0x00003eb9, 0x00000000, 0x00000000, 0x00000000,
> +     0x3f5300ad, 0x00000000, 0x00000000, 0x00000000,
> +     0x00480000, 0x00003fb8, 0x00000000, 0x00000000,
> +     0x00000000, 0x3fef0011, 0x00000000, 0x00000000,
> +     0x00000000, 0x00000000, 0x00004000, 0x00000000,
> +     0x00000000, 0x00000000, 0x20002000, 0x00000000,
> +     0x00000000, 0x00000000, 0x1c030000, 0x000023fd,
> +     0x00000000, 0x00000000, 0x00000000, 0x27e1181f,
> +     0x00000000, 0x00000000, 0x00000000, 0x14680000,
> +     0x00002b98, 0x00000000, 0x00000000, 0x00000000,
> +     0x2f1010f0, 0x00000000, 0x00000000, 0x00000000,
> +     0x0dc70000, 0x00003239, 0x00000000, 0x00000000,
> +     0x00000000, 0x350b0af5, 0x00000000, 0x00000000,
> +     0x00000000, 0x087f0000, 0x00003781, 0x00000000,
> +     0x00000000, 0x00000000, 0x399a0666, 0x00000000,
> +     0x00000000, 0x00000000, 0x04a70000, 0x00003b59,
> +     0x00000000, 0x00000000, 0x00000000, 0x3cc4033c,
> +     0x00000000, 0x00000000, 0x00000000, 0x021f0000,
> +};
> +
> +#define H_COEF_SIZE ARRAY_SIZE(horkernel)
> +
> +static const u32 verkernel[] = {
> +     0x00000000, 0x20000000, 0x00002000, 0x00000000,
> +     0x00000000, 0x00000000, 0x23fd1c03, 0x00000000,
> +     0x00000000, 0x00000000, 0x181f0000, 0x000027e1,
> +     0x00000000, 0x00000000, 0x00000000, 0x2b981468,
> +     0x00000000, 0x00000000, 0x00000000, 0x10f00000,
> +     0x00002f10, 0x00000000, 0x00000000, 0x00000000,
> +     0x32390dc7, 0x00000000, 0x00000000, 0x00000000,
> +     0x0af50000, 0x0000350b, 0x00000000, 0x00000000,
> +     0x00000000, 0x3781087f, 0x00000000, 0x00000000,
> +     0x00000000, 0x06660000, 0x0000399a, 0x00000000,
> +     0x00000000, 0x00000000, 0x3b5904a7, 0x00000000,
> +     0x00000000, 0x00000000, 0x033c0000, 0x00003cc4,
> +     0x00000000, 0x00000000, 0x00000000, 0x3de1021f,
> +     0x00000000, 0x00000000, 0x00000000, 0x01470000,
> +     0x00003eb9, 0x00000000, 0x00000000, 0x00000000,
> +     0x3f5300ad, 0x00000000, 0x00000000, 0x00000000,
> +     0x00480000, 0x00003fb8, 0x00000000, 0x00000000,
> +     0x00000000, 0x3fef0011, 0x00000000, 0x00000000,
> +     0x00000000, 0x00000000, 0x00004000, 0x00000000,
> +     0xcdcd0000, 0xfdfdfdfd, 0xabababab, 0xabababab,
> +     0x00000000, 0x00000000, 0x5ff5f456, 0x000f5f58,
> +     0x02cc6c78, 0x02cc0c28, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +     0xfeeefeee, 0xfeeefeee, 0xfeeefeee, 0xfeeefeee,
> +};
> +
> +#define V_COEF_SIZE ARRAY_SIZE(verkernel)
> +
> +/*
> + * RGB 709->2020 conversion parameters
> + */
> +static const u16 RGB2RGB[RGB_TO_RGB_TABLE_SIZE] = {
> +     10279,  5395,   709,
> +     1132,   15065,  187,
> +     269,    1442,   14674
> +};
> +
> +/*
> + * YUV601 to RGB conversion parameters
> + * YUV2RGB[0]  - [8] : C0 - C8;
> + * YUV2RGB[9]  - [11]: D0 - D2;
> + * YUV2RGB[12] - [13]: Y clamp min & max calue;
> + * YUV2RGB[14] - [15]: UV clamp min & max calue;
> + */
> +static const s32 YUV601_2RGB[YUV_TO_RGB_TABLE_SIZE] = {
> +     1196,   0,              1640,   1196,
> +     -404,   -836,           1196,   2076,
> +     0,      -916224,        558336, -1202944,
> +     64,     940,            64,     960
> +};
> +
> +/*
> + * YUV709 to RGB conversion parameters
> + * YUV2RGB[0]  - [8] : C0 - C8;
> + * YUV2RGB[9]  - [11]: D0 - D2;
> + * YUV2RGB[12] - [13]: Y clamp min & max calue;
> + * YUV2RGB[14] - [15]: UV clamp min & max calue;
> + */
> +static s32 YUV709_2RGB[YUV_TO_RGB_TABLE_SIZE] = {
> +     1196,           0,              1844,   1196,
> +     -220,           -548,   1196,   2172,
> +     0,                      -1020672, 316672,  -1188608,
> +     64,                     940,            64,             960
> +};
> +
> +/*
> + * YUV2020 to RGB conversion parameters
> + * YUV2RGB[0]  - [8] : C0 - C8;
> + * YUV2RGB[9]  - [11]: D0 - D2;
> + * YUV2RGB[12] - [13]: Y clamp min & max calue;
> + * YUV2RGB[14] - [15]: UV clamp min & max calue;
> + */
> +static s32 YUV2020_2RGB[YUV_TO_RGB_TABLE_SIZE] = {
> +     1196, 0, 1724, 1196,
> +     -192, -668, 1196, 2200,
> +     0, -959232, 363776, -1202944,
> +     64, 940, 64, 960
> +};
> +
> +/*
> + * RGB to YUV2020 conversion parameters
> + * RGB2YUV[0] - [8] : C0 - C8;
> + * RGB2YUV[9] - [11]: D0 - D2;
> + */
> +static s16 RGB2YUV[RGB_TO_YUV_TABLE_SIZE] = {
> +     230,    594,    52,
> +     -125,  -323,    448,
> +     448,   -412,   -36,
> +     64,             512,    512

Please fix spaces vs tabs here.

> +};
> +
> +/* one is for primary plane and the other is for all overlay planes */
> +static const struct dc_hw_plane_reg dc_plane_reg[] = {
> +     {
> +             .y_address              = DC_FRAMEBUFFER_ADDRESS,
> +             .u_address              = DC_FRAMEBUFFER_U_ADDRESS,
> +             .v_address              = DC_FRAMEBUFFER_V_ADDRESS,
> +             .y_stride               = DC_FRAMEBUFFER_STRIDE,
> +             .u_stride               = DC_FRAMEBUFFER_U_STRIDE,
> +             .v_stride               = DC_FRAMEBUFFER_V_STRIDE,
> +             .size                   = DC_FRAMEBUFFER_SIZE,
> +             .top_left               = DC_FRAMEBUFFER_TOP_LEFT,
> +             .bottom_right   = DC_FRAMEBUFFER_BOTTOM_RIGHT,
> +             .scale_factor_x                 = DC_FRAMEBUFFER_SCALE_FACTOR_X,
> +             .scale_factor_y                 = DC_FRAMEBUFFER_SCALE_FACTOR_Y,
> +             .h_filter_coef_index    = DC_FRAMEBUFFER_H_FILTER_COEF_INDEX,
> +             .h_filter_coef_data             = 
> DC_FRAMEBUFFER_H_FILTER_COEF_DATA,
> +             .v_filter_coef_index    = DC_FRAMEBUFFER_V_FILTER_COEF_INDEX,
> +             .v_filter_coef_data             = 
> DC_FRAMEBUFFER_V_FILTER_COEF_DATA,
> +             .init_offset                    = DC_FRAMEBUFFER_INIT_OFFSET,
> +             .color_key                              = 
> DC_FRAMEBUFFER_COLOR_KEY,
> +             .color_key_high                 = DC_FRAMEBUFFER_COLOR_KEY_HIGH,
> +             .clear_value                    = DC_FRAMEBUFFER_CLEAR_VALUE,
> +             .color_table_index              = 
> DC_FRAMEBUFFER_COLOR_TABLE_INDEX,
> +             .color_table_data               = 
> DC_FRAMEBUFFER_COLOR_TABLE_DATA,
> +             .scale_config                   = DC_FRAMEBUFFER_SCALE_CONFIG,
> +             .water_mark                             = 
> DC_FRAMEBUFFER_WATER_MARK,
> +             .degamma_index                  = DC_FRAMEBUFFER_DEGAMMA_INDEX,
> +             .degamma_data                   = DC_FRAMEBUFFER_DEGAMMA_DATA,
> +             .degamma_ex_data                = 
> DC_FRAMEBUFFER_DEGAMMA_EX_DATA,
> +             .src_global_color               = 
> DC_FRAMEBUFFER_SRC_GLOBAL_COLOR,
> +             .dst_global_color               = 
> DC_FRAMEBUFFER_DST_GLOBAL_COLOR,
> +             .blend_config                   = DC_FRAMEBUFFER_BLEND_CONFIG,
> +             .roi_origin                             = 
> DC_FRAMEBUFFER_ROI_ORIGIN,
> +             .roi_size                               = 
> DC_FRAMEBUFFER_ROI_SIZE,
> +             .yuv_to_rgb_coef0                       = 
> DC_FRAMEBUFFER_YUVTORGB_COEF0,
> +             .yuv_to_rgb_coef1                       = 
> DC_FRAMEBUFFER_YUVTORGB_COEF1,
> +             .yuv_to_rgb_coef2                       = 
> DC_FRAMEBUFFER_YUVTORGB_COEF2,
> +             .yuv_to_rgb_coef3                       = 
> DC_FRAMEBUFFER_YUVTORGB_COEF3,
> +             .yuv_to_rgb_coef4                       = 
> DC_FRAMEBUFFER_YUVTORGB_COEF4,
> +             .yuv_to_rgb_coefd0                      = 
> DC_FRAMEBUFFER_YUVTORGB_COEFD0,
> +             .yuv_to_rgb_coefd1                      = 
> DC_FRAMEBUFFER_YUVTORGB_COEFD1,
> +             .yuv_to_rgb_coefd2                      = 
> DC_FRAMEBUFFER_YUVTORGB_COEFD2,
> +             .y_clamp_bound                          = 
> DC_FRAMEBUFFER_Y_CLAMP_BOUND,
> +             .uv_clamp_bound                         = 
> DC_FRAMEBUFFER_UV_CLAMP_BOUND,
> +             .rgb_to_rgb_coef0                       = 
> DC_FRAMEBUFFER_RGBTORGB_COEF0,
> +             .rgb_to_rgb_coef1                       = 
> DC_FRAMEBUFFER_RGBTORGB_COEF1,
> +             .rgb_to_rgb_coef2                       = 
> DC_FRAMEBUFFER_RGBTORGB_COEF2,
> +             .rgb_to_rgb_coef3                       = 
> DC_FRAMEBUFFER_RGBTORGB_COEF3,
> +             .rgb_to_rgb_coef4                       = 
> DC_FRAMEBUFFER_RGBTORGB_COEF4,
> +     },
> +     {
> +             .y_address              = DC_OVERLAY_ADDRESS,
> +             .u_address              = DC_OVERLAY_U_ADDRESS,
> +             .v_address              = DC_OVERLAY_V_ADDRESS,
> +             .y_stride               = DC_OVERLAY_STRIDE,
> +             .u_stride               = DC_OVERLAY_U_STRIDE,
> +             .v_stride               = DC_OVERLAY_V_STRIDE,
> +             .size                   = DC_OVERLAY_SIZE,
> +             .top_left               = DC_OVERLAY_TOP_LEFT,
> +             .bottom_right   = DC_OVERLAY_BOTTOM_RIGHT,
> +             .scale_factor_x = DC_OVERLAY_SCALE_FACTOR_X,
> +             .scale_factor_y = DC_OVERLAY_SCALE_FACTOR_Y,
> +             .h_filter_coef_index = DC_OVERLAY_H_FILTER_COEF_INDEX,
> +             .h_filter_coef_data  = DC_OVERLAY_H_FILTER_COEF_DATA,
> +             .v_filter_coef_index = DC_OVERLAY_V_FILTER_COEF_INDEX,
> +             .v_filter_coef_data  = DC_OVERLAY_V_FILTER_COEF_DATA,
> +             .init_offset             = DC_OVERLAY_INIT_OFFSET,
> +             .color_key                       = DC_OVERLAY_COLOR_KEY,
> +             .color_key_high                 = DC_OVERLAY_COLOR_KEY_HIGH,
> +             .clear_value             = DC_OVERLAY_CLEAR_VALUE,
> +             .color_table_index       = DC_OVERLAY_COLOR_TABLE_INDEX,
> +             .color_table_data        = DC_OVERLAY_COLOR_TABLE_DATA,
> +             .scale_config            = DC_OVERLAY_SCALE_CONFIG,
> +             .water_mark                             = DC_OVERLAY_WATER_MARK,
> +             .degamma_index           = DC_OVERLAY_DEGAMMA_INDEX,
> +             .degamma_data            = DC_OVERLAY_DEGAMMA_DATA,
> +             .degamma_ex_data         = DC_OVERLAY_DEGAMMA_EX_DATA,
> +             .src_global_color        = DC_OVERLAY_SRC_GLOBAL_COLOR,
> +             .dst_global_color        = DC_OVERLAY_DST_GLOBAL_COLOR,
> +             .blend_config            = DC_OVERLAY_BLEND_CONFIG,
> +             .roi_origin                             = DC_OVERLAY_ROI_ORIGIN,
> +             .roi_size                               = DC_OVERLAY_ROI_SIZE,
> +             .yuv_to_rgb_coef0                = DC_OVERLAY_YUVTORGB_COEF0,
> +             .yuv_to_rgb_coef1                = DC_OVERLAY_YUVTORGB_COEF1,
> +             .yuv_to_rgb_coef2                = DC_OVERLAY_YUVTORGB_COEF2,
> +             .yuv_to_rgb_coef3                = DC_OVERLAY_YUVTORGB_COEF3,
> +             .yuv_to_rgb_coef4                       = 
> DC_OVERLAY_YUVTORGB_COEF4,
> +             .yuv_to_rgb_coefd0                      = 
> DC_OVERLAY_YUVTORGB_COEFD0,
> +             .yuv_to_rgb_coefd1                      = 
> DC_OVERLAY_YUVTORGB_COEFD1,
> +             .yuv_to_rgb_coefd2                      = 
> DC_OVERLAY_YUVTORGB_COEFD2,
> +             .y_clamp_bound           = DC_OVERLAY_Y_CLAMP_BOUND,
> +             .uv_clamp_bound          = DC_OVERLAY_UV_CLAMP_BOUND,
> +             .rgb_to_rgb_coef0                = DC_OVERLAY_RGBTORGB_COEF0,
> +             .rgb_to_rgb_coef1                = DC_OVERLAY_RGBTORGB_COEF1,
> +             .rgb_to_rgb_coef2                = DC_OVERLAY_RGBTORGB_COEF2,
> +             .rgb_to_rgb_coef3                = DC_OVERLAY_RGBTORGB_COEF3,
> +             .rgb_to_rgb_coef4                = DC_OVERLAY_RGBTORGB_COEF4,
> +     },
> +};
> +
> +static inline u32 hi_read(struct dc_hw *hw, u32 reg)
> +{
> +     return readl(hw->hi_base + reg);
> +}
> +
> +static inline void hi_write(struct dc_hw *hw, u32 reg, u32 value)
> +{
> +     writel(value, hw->hi_base + reg);
> +}
> +
> +static inline void dc_write(struct dc_hw *hw, u32 reg, u32 value)
> +{
> +     writel(value, hw->reg_base + reg - DC_REG_BASE);
> +}
> +
> +static inline u32 dc_read(struct dc_hw *hw, u32 reg)
> +{
> +     u32 value = readl(hw->reg_base + reg - DC_REG_BASE);
> +
> +     return value;

just return readl(...)

> +}
> +
> +static inline void dc_set_clear(struct dc_hw *hw, u32 reg, u32 set, u32 
> clear)
> +{
> +     u32 value = dc_read(hw, reg);
> +
> +     value &= ~clear;
> +     value |= set;
> +     dc_write(hw, reg, value);

regmap_update_bits?

> +}
> +
> +static void load_default_filter(struct dc_hw *hw,
> +                             const struct dc_hw_plane_reg *reg, u32 offset)
> +{
> +     u8 i;
> +
> +     dc_write(hw, reg->scale_config + offset, 0x33);
> +     dc_write(hw, reg->init_offset + offset, 0x80008000);
> +     dc_write(hw, reg->h_filter_coef_index + offset, 0x00);
> +     for (i = 0; i < H_COEF_SIZE; i++)
> +             dc_write(hw, reg->h_filter_coef_data + offset, horkernel[i]);
> +
> +     dc_write(hw, reg->v_filter_coef_index + offset, 0x00);
> +     for (i = 0; i < V_COEF_SIZE; i++)
> +             dc_write(hw, reg->v_filter_coef_data + offset, verkernel[i]);
> +}
> +
> +static void load_rgb_to_rgb(struct dc_hw *hw, const struct dc_hw_plane_reg 
> *reg,
> +                         u32 offset, const u16 *table)
> +{
> +     dc_write(hw, reg->rgb_to_rgb_coef0 + offset, table[0] | (table[1] << 
> 16));
> +     dc_write(hw, reg->rgb_to_rgb_coef1 + offset, table[2] | (table[3] << 
> 16));
> +     dc_write(hw, reg->rgb_to_rgb_coef2 + offset, table[4] | (table[5] << 
> 16));
> +     dc_write(hw, reg->rgb_to_rgb_coef3 + offset, table[6] | (table[7] << 
> 16));
> +     dc_write(hw, reg->rgb_to_rgb_coef4 + offset, table[8]);
> +}
> +
> +static void load_yuv_to_rgb(struct dc_hw *hw, const struct dc_hw_plane_reg 
> *reg,
> +                         u32 offset, const s32 *table)
> +{
> +     dc_write(hw, reg->yuv_to_rgb_coef0 + offset,
> +              (0xFFFF & table[0]) | (table[1] << 16));
> +     dc_write(hw, reg->yuv_to_rgb_coef1 + offset,
> +              (0xFFFF & table[2]) | (table[3] << 16));
> +     dc_write(hw, reg->yuv_to_rgb_coef2 + offset,
> +              (0xFFFF & table[4]) | (table[5] << 16));
> +     dc_write(hw, reg->yuv_to_rgb_coef3 + offset,
> +              (0xFFFF & table[6]) | (table[7] << 16));
> +     dc_write(hw, reg->yuv_to_rgb_coef4 + offset, table[8]);
> +     dc_write(hw, reg->yuv_to_rgb_coefd0 + offset, table[9]);
> +     dc_write(hw, reg->yuv_to_rgb_coefd1 + offset, table[10]);
> +     dc_write(hw, reg->yuv_to_rgb_coefd2 + offset, table[11]);
> +     dc_write(hw, reg->y_clamp_bound + offset, table[12] | (table[13] << 
> 16));
> +     dc_write(hw, reg->uv_clamp_bound + offset, table[14] | (table[15] << 
> 16));
> +}
> +
> +static void load_rgb_to_yuv(struct dc_hw *hw, u32 offset, s16 *table)

Is there any reason why load_rgb_to_yuv differs from two other
functions?

> +{
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEF0 + offset,
> +              table[0] | (table[1] << 16));
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEF1 + offset,
> +              table[2] | (table[3] << 16));
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEF2 + offset,
> +              table[4] | (table[5] << 16));
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEF3 + offset,
> +              table[6] | (table[7] << 16));
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEF4 + offset, table[8]);
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEFD0 + offset, table[9]);
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEFD1 + offset, table[10]);
> +     dc_write(hw, DC_DISPLAY_RGBTOYUV_COEFD2 + offset, table[11]);
> +}
> +
> +static int update_vs_format(u32 drm_format)
> +{
> +     u8 f = FORMAT_A8R8G8B8;
> +
> +     switch (drm_format) {
> +     case DRM_FORMAT_XRGB4444:
> +     case DRM_FORMAT_RGBX4444:
> +     case DRM_FORMAT_XBGR4444:
> +     case DRM_FORMAT_BGRX4444:
> +             f = FORMAT_X4R4G4B4;
> +             break;
> +     case DRM_FORMAT_ARGB4444:
> +     case DRM_FORMAT_RGBA4444:
> +     case DRM_FORMAT_ABGR4444:
> +     case DRM_FORMAT_BGRA4444:
> +             f = FORMAT_A4R4G4B4;
> +             break;
> +     case DRM_FORMAT_XRGB1555:
> +     case DRM_FORMAT_RGBX5551:
> +     case DRM_FORMAT_XBGR1555:
> +     case DRM_FORMAT_BGRX5551:
> +             f = FORMAT_X1R5G5B5;
> +             break;
> +     case DRM_FORMAT_ARGB1555:
> +     case DRM_FORMAT_RGBA5551:
> +     case DRM_FORMAT_ABGR1555:
> +     case DRM_FORMAT_BGRA5551:
> +             f = FORMAT_A1R5G5B5;
> +             break;
> +     case DRM_FORMAT_RGB565:
> +     case DRM_FORMAT_BGR565:
> +             f = FORMAT_R5G6B5;
> +             break;
> +     case DRM_FORMAT_XRGB8888:
> +     case DRM_FORMAT_RGBX8888:
> +     case DRM_FORMAT_XBGR8888:
> +     case DRM_FORMAT_BGRX8888:
> +             f = FORMAT_X8R8G8B8;
> +             break;
> +     case DRM_FORMAT_ARGB8888:
> +     case DRM_FORMAT_RGBA8888:
> +     case DRM_FORMAT_ABGR8888:
> +     case DRM_FORMAT_BGRA8888:
> +             f = FORMAT_A8R8G8B8;
> +             break;
> +     case DRM_FORMAT_YUYV:
> +     case DRM_FORMAT_YVYU:
> +             f = FORMAT_YUY2;
> +             break;
> +     case DRM_FORMAT_UYVY:
> +     case DRM_FORMAT_VYUY:
> +             f = FORMAT_UYVY;
> +             break;
> +     case DRM_FORMAT_YUV420:
> +     case DRM_FORMAT_YVU420:
> +             f = FORMAT_YV12;
> +             break;
> +     case DRM_FORMAT_NV21:
> +             f = FORMAT_NV12;
> +             break;
> +     case DRM_FORMAT_NV16:
> +     case DRM_FORMAT_NV61:
> +             f = FORMAT_NV16;
> +             break;
> +     case DRM_FORMAT_P010:
> +             f = FORMAT_P010;
> +             break;
> +     case DRM_FORMAT_ARGB2101010:
> +     case DRM_FORMAT_RGBA1010102:
> +     case DRM_FORMAT_ABGR2101010:
> +     case DRM_FORMAT_BGRA1010102:
> +             f = FORMAT_A2R10G10B10;
> +             break;
> +     case DRM_FORMAT_NV12:
> +             f = FORMAT_NV12;
> +             break;
> +     case DRM_FORMAT_YUV444:
> +             f = FORMAT_YUV444;

s/f = /return /g all over the place.

> +             break;
> +     default:

return -EINVAL;

> +             break;
> +     }
> +
> +     return f;
> +}
> +
> +int dc_hw_init(struct vs_dc *dc)
> +{
> +     u8 i, id, panel_num, layer_num;
> +     struct dc_hw *hw = &dc->hw;
> +     u32 offset;
> +
> +     layer_num = hw->info->layer_num;
> +     for (i = 0; i < layer_num; i++) {
> +             id = dc->planes[i].id;
> +             if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                     hw->reg[i] = dc_plane_reg[0];
> +             else
> +                     hw->reg[i] = dc_plane_reg[1];
> +
> +             load_default_filter(hw, &hw->reg[i], dc->planes[i].offset);
> +             load_rgb_to_rgb(hw, &hw->reg[i], dc->planes[i].offset, RGB2RGB);
> +     }
> +
> +     panel_num = hw->info->panel_num;
> +     for (i = 0; i < panel_num; i++) {
> +             offset = i << 2;
> +
> +             load_rgb_to_yuv(hw, offset, RGB2YUV);
> +             dc_write(hw, DC_DISPLAY_PANEL_CONFIG + offset, 0x111);
> +
> +             offset = i ? DC_CURSOR_OFFSET : 0;
> +             dc_write(hw, DC_CURSOR_BACKGROUND + offset, 0x00FFFFFF);
> +             dc_write(hw, DC_CURSOR_FOREGROUND + offset, 0x00AAAAAA);
> +     }
> +
> +     return 0;
> +}
> +
> +void dc_hw_disable_plane(struct vs_dc *dc, u8 id)
> +{
> +     struct dc_hw *hw = &dc->hw;
> +
> +     if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +             dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG_EX + 
> dc->planes[id].offset,
> +                          PRIMARY_EN(false), PRIMARY_EN_MASK);
> +     else
> +             dc_set_clear(hw, DC_OVERLAY_CONFIG + dc->planes[id].offset,
> +                          OVERLAY_FB_EN(false), OVERLAY_FB_EN_MASK);
> +}
> +
> +static int update_cursor_size(uint32_t crtc_w)

get_cursor_size()

> +{
> +     u8 size_type;
> +
> +     switch (crtc_w) {
> +     case 32:
> +             size_type = CURSOR_SIZE_32X32;
> +             break;
> +     case 64:
> +             size_type = CURSOR_SIZE_64X64;
> +             break;
> +     default:
> +             size_type = CURSOR_SIZE_32X32;
> +             break;
> +     }
> +
> +     return size_type;

Same comment. Return directly without extra variable assignments.

> +}
> +
> +void dc_hw_update_cursor(struct dc_hw *hw, u8 id, dma_addr_t dma_addr,
> +                      u32 crtc_w, u32 crtc_x, u32 crtc_y,
> +                      s32 hotspot_x, s32 hotspot_y)
> +{
> +     u32 offset, size;
> +
> +     offset = id ? DC_CURSOR_OFFSET : 0;
> +     size = update_cursor_size(crtc_w);
> +
> +     dc_write(hw, DC_CURSOR_ADDRESS + offset,
> +              dma_addr);
> +     dc_write(hw, DC_CURSOR_LOCATION + offset,
> +              X_LCOTION(crtc_x) |
> +              Y_LCOTION(crtc_y));
> +     dc_set_clear(hw, DC_CURSOR_CONFIG + offset,
> +                  CURSOR_HOT_X(hotspot_x) |
> +                  CURSOR_HOT_y(hotspot_y) |
> +                  CURSOR_SIZE(size) |
> +                  CURSOR_VALID(1) |
> +                  CURSOR_TRIG_FETCH(1) |
> +                  CURSOR_FORMAT(CURSOR_FORMAT_A8R8G8B8),
> +                  CURSOR_HOT_X_MASK |
> +                  CURSOR_HOT_y_MASK |
> +                  CURSOR_SIZE_MASK |
> +                  CURSOR_VALID_MASK |
> +                  CURSOR_TRIG_FETCH_MASK |
> +                  CURSOR_FORMAT_MASK);
> +}
> +
> +void dc_hw_disable_cursor(struct dc_hw *hw, u8 id)
> +{
> +     u32 offset = 0;
> +
> +     offset = id ? DC_CURSOR_OFFSET : 0;
> +     dc_set_clear(hw, DC_CURSOR_CONFIG + offset, CURSOR_VALID(1), 
> CURSOR_FORMAT_MASK);
> +}
> +
> +void dc_hw_update_gamma(struct dc_hw *hw, u8 id, u16 index,
> +                     u16 r, u16 g, u16 b)
> +{
> +     if (index >= hw->info->gamma_size)
> +             return;
> +
> +     hw->gamma[id].gamma[index][0] = r;
> +     hw->gamma[id].gamma[index][1] = g;
> +     hw->gamma[id].gamma[index][2] = b;
> +}
> +
> +void dc_hw_enable_gamma(struct dc_hw *hw, u8 id, bool enable)
> +{
> +     u32 value;
> +
> +     if (enable) {
> +             dc_write(hw, DC_DISPLAY_GAMMA_EX_INDEX + (id << 2), 0x00);
> +             for (int i = 0; i < GAMMA_EX_SIZE; i++) {
> +                     value = hw->gamma[id].gamma[i][2] |
> +                             (hw->gamma[id].gamma[i][1] << 12);
> +                     dc_write(hw, DC_DISPLAY_GAMMA_EX_DATA + (id << 2), 
> value);
> +                     dc_write(hw, DC_DISPLAY_GAMMA_EX_ONE_DATA + (id << 2),
> +                              hw->gamma[id].gamma[i][0]);
> +             }
> +             dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG + (id << 2), 
> PANEL_GAMMA_EN, 0);
> +     } else {
> +             dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG + (id << 2), 0, 
> PANEL_GAMMA_EN);
> +     }
> +}
> +
> +void dc_hw_enable(struct dc_hw *hw, int id, struct drm_display_mode *mode,
> +               u8 encoder_type, u32 output_fmt)
> +{
> +     u32 dp_cfg, dpi_cfg, offset = id << 2;
> +     bool is_yuv = false;
> +
> +     if (encoder_type != DRM_MODE_ENCODER_DSI) {
> +             switch (output_fmt) {
> +             case MEDIA_BUS_FMT_RGB565_1X16:
> +                     dp_cfg = 0;
> +                     break;
> +             case MEDIA_BUS_FMT_RGB666_1X18:
> +                     dp_cfg = 1;
> +                     break;
> +             case MEDIA_BUS_FMT_RGB888_1X24:
> +                     dp_cfg = 2;
> +                     break;
> +             case MEDIA_BUS_FMT_RGB101010_1X30:
> +                     dp_cfg = 3;
> +                     break;
> +             case MEDIA_BUS_FMT_UYVY8_1X16:
> +                     dp_cfg = 2 << 4;
> +                     is_yuv = true;
> +                     break;
> +             case MEDIA_BUS_FMT_YUV8_1X24:
> +                     dp_cfg = 4 << 4;
> +                     is_yuv = true;
> +                     break;
> +             case MEDIA_BUS_FMT_UYVY10_1X20:
> +                     dp_cfg = 8 << 4;
> +                     is_yuv = true;
> +                     break;
> +             case MEDIA_BUS_FMT_YUV10_1X30:
> +                     dp_cfg = 10 << 4;
> +                     is_yuv = true;
> +                     break;
> +             case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
> +                     dp_cfg = 12 << 4;
> +                     is_yuv = true;
> +                     break;
> +             case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
> +                     dp_cfg = 13 << 4;
> +                     is_yuv = true;
> +                     break;
> +             default:
> +                     dp_cfg = 2;
> +                     break;
> +             }
> +             if (is_yuv)
> +                     dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG + offset, 
> PANEL_RGB2YUV_EN, 0);
> +             else
> +                     dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG + offset, 0, 
> PANEL_RGB2YUV_EN);
> +             dc_write(hw, DC_DISPLAY_DP_CONFIG + offset, dp_cfg | DP_SELECT);
> +     }
> +
> +     if (hw->out[id] == OUT_DPI)
> +             dc_set_clear(hw, DC_DISPLAY_DP_CONFIG + offset, 0, DP_SELECT);
> +
> +     switch (output_fmt) {
> +     case MEDIA_BUS_FMT_RGB565_1X16:
> +             dpi_cfg = 0;
> +             break;
> +     case MEDIA_BUS_FMT_RGB666_1X18:
> +             dpi_cfg = 3;
> +             break;
> +     case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
> +             dpi_cfg = 4;
> +             break;
> +     case MEDIA_BUS_FMT_RGB888_1X24:
> +             dpi_cfg = 5;
> +             break;
> +     case MEDIA_BUS_FMT_RGB101010_1X30:
> +             dpi_cfg = 6;
> +             break;
> +     default:
> +             dpi_cfg = 5;
> +             break;
> +     }
> +     dc_write(hw, DC_DISPLAY_DPI_CONFIG + offset, dpi_cfg);
> +
> +     if (id == 0)
> +             dc_set_clear(hw, DC_DISPLAY_PANEL_START, 0, PANEL0_EN | 
> TWO_PANEL_EN);
> +     else
> +             dc_set_clear(hw, DC_DISPLAY_PANEL_START, 0, PANEL1_EN | 
> TWO_PANEL_EN);
> +
> +     dc_write(hw, DC_DISPLAY_H + offset,
> +              H_ACTIVE_LEN(mode->hdisplay) |
> +              H_TOTAL_LEN(mode->htotal));
> +
> +     dc_write(hw, DC_DISPLAY_H_SYNC + offset,
> +              H_SYNC_START_LEN(mode->hsync_start) |
> +              H_SYNC_END_LEN(mode->hsync_end) |
> +              H_POLARITY_LEN(mode->flags & DRM_MODE_FLAG_PHSYNC ? 0 : 1) |
> +              H_PLUS_LEN(1));
> +
> +     dc_write(hw, DC_DISPLAY_V + offset,
> +              V_ACTIVE_LEN(mode->vdisplay) |
> +              V_TOTAL_LEN(mode->vtotal));
> +
> +     dc_write(hw, DC_DISPLAY_V_SYNC + offset,
> +              V_SYNC_START_LEN(mode->vsync_start) |
> +              V_SYNC_END_LEN(mode->vsync_end) |
> +              V_POLARITY_LEN(mode->flags & DRM_MODE_FLAG_PVSYNC ? 0 : 1) |
> +              V_PLUS_LEN(1));
> +
> +     dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG + offset, PANEL_OUTPUT_EN, 0);
> +     dc_set_clear(hw, DC_DISPLAY_PANEL_START, BIT(id), SYNC_EN);
> +}
> +
> +void dc_hw_disable(struct dc_hw *hw, int id)
> +{
> +     u32 offset = id << 2;
> +
> +     if (hw->out[id] == OUT_DPI)
> +             dc_set_clear(hw, DC_DISPLAY_DP_CONFIG + offset, 0, DP_SELECT);
> +     dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG + offset, 0, PANEL_OUTPUT_EN);
> +     dc_set_clear(hw, DC_DISPLAY_PANEL_START, 0, BIT(id) | TWO_PANEL_EN);
> +}
> +
> +void dc_hw_enable_interrupt(struct dc_hw *hw)
> +{
> +     hi_write(hw, AQ_INTR_ENBL, 0xFFFFFFFF);
> +}
> +
> +void dc_hw_disable_interrupt(struct dc_hw *hw)
> +{
> +     hi_write(hw, AQ_INTR_ENBL, 0);
> +}
> +
> +u32 dc_hw_get_interrupt(struct dc_hw *hw)
> +{
> +     return hi_read(hw, AQ_INTR_ACKNOWLEDGE);
> +}
> +
> +void dc_hw_enable_shadow_register(struct vs_dc *dc, bool enable)
> +{
> +     u32 i, offset;
> +     struct dc_hw *hw = &dc->hw;
> +     u8 id, layer_num = hw->info->layer_num;
> +     u8 panel_num = hw->info->panel_num;
> +
> +     for (i = 0; i < layer_num; i++) {
> +             id = dc->planes[i].id;
> +             offset = dc->planes[i].offset;
> +             if (enable) {
> +                     if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                             dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG_EX + 
> offset,
> +                                          PRIMARY_SHADOW_EN, 0);
> +                     else
> +                             dc_set_clear(hw, DC_OVERLAY_CONFIG + offset,
> +                                          OVERLAY_SHADOW_EN, 0);
> +             } else {
> +                     if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                             dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG_EX + 
> offset,
> +                                          0, PRIMARY_SHADOW_EN);
> +                     else
> +                             dc_set_clear(hw, DC_OVERLAY_CONFIG + offset,
> +                                          0, OVERLAY_SHADOW_EN);
> +             }
> +     }
> +
> +     for (i = 0; i < panel_num; i++) {
> +             offset = i << 2;
> +             if (enable)
> +                     dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG_EX + offset, 
> 0, PANEL_SHADOW_EN);
> +             else
> +                     dc_set_clear(hw, DC_DISPLAY_PANEL_CONFIG_EX + offset, 
> PANEL_SHADOW_EN, 0);
> +     }
> +}
> +
> +void dc_hw_set_out(struct dc_hw *hw, enum dc_hw_out out, u8 id)
> +{
> +     if (out <= OUT_DP)

This doesn't scale if you add another output type. Please either add
OUT_MAX or consider something which doesn't make OUT_DP special.

> +             hw->out[id] = out;
> +}
> +
> +static inline u8 to_vs_yuv_color_space(u32 color_space)
> +{
> +     u8 cs;
> +
> +     switch (color_space) {
> +     case DRM_COLOR_YCBCR_BT601:
> +             cs = COLOR_SPACE_601;
> +             break;
> +     case DRM_COLOR_YCBCR_BT709:
> +             cs = COLOR_SPACE_709;
> +             break;
> +     case DRM_COLOR_YCBCR_BT2020:
> +             cs = COLOR_SPACE_2020;
> +             break;
> +     default:
> +             cs = COLOR_SPACE_601;
> +             break;
> +     }
> +
> +     return cs;
> +}
> +
> +static inline u8 update_uv_swizzle(u32 format)
> +{
> +     u8 uv_swizzle = 0;
> +
> +     switch (format) {
> +     case DRM_FORMAT_YVYU:
> +     case DRM_FORMAT_VYUY:
> +     case DRM_FORMAT_NV21:
> +     case DRM_FORMAT_NV61:
> +             uv_swizzle = 1;
> +             break;
> +     default:
> +             break;
> +     }
> +
> +     return uv_swizzle;
> +}
> +
> +static inline u8 update_swizzle(u32 format)
> +{
> +     u8 swizzle = SWIZZLE_ARGB;
> +
> +     switch (format) {
> +     case DRM_FORMAT_RGBX4444:
> +     case DRM_FORMAT_RGBA4444:
> +     case DRM_FORMAT_RGBX5551:
> +     case DRM_FORMAT_RGBA5551:
> +     case DRM_FORMAT_RGBX8888:
> +     case DRM_FORMAT_RGBA8888:
> +     case DRM_FORMAT_RGBA1010102:
> +             swizzle = SWIZZLE_RGBA;
> +             break;
> +     case DRM_FORMAT_XBGR4444:
> +     case DRM_FORMAT_ABGR4444:
> +     case DRM_FORMAT_XBGR1555:
> +     case DRM_FORMAT_ABGR1555:
> +     case DRM_FORMAT_BGR565:
> +     case DRM_FORMAT_XBGR8888:
> +     case DRM_FORMAT_ABGR8888:
> +     case DRM_FORMAT_ABGR2101010:
> +             swizzle = SWIZZLE_ABGR;
> +             break;
> +     case DRM_FORMAT_BGRX4444:
> +     case DRM_FORMAT_BGRA4444:
> +     case DRM_FORMAT_BGRX5551:
> +     case DRM_FORMAT_BGRA5551:
> +     case DRM_FORMAT_BGRX8888:
> +     case DRM_FORMAT_BGRA8888:
> +     case DRM_FORMAT_BGRA1010102:
> +             swizzle = SWIZZLE_BGRA;
> +             break;
> +     default:
> +             break;
> +     }
> +
> +     return swizzle;
> +}
> +
> +static inline u8 to_vs_rotation(unsigned int rotation)
> +{
> +     u8 rot;
> +
> +     switch (rotation & DRM_MODE_REFLECT_MASK) {
> +     case DRM_MODE_REFLECT_X:
> +             rot = FLIP_X;
> +             return rot;
> +     case DRM_MODE_REFLECT_Y:
> +             rot = FLIP_Y;
> +             return rot;
> +     case DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y:
> +             rot = FLIP_XY;
> +             return rot;
> +     default:
> +             break;
> +     }
> +
> +     switch (rotation & DRM_MODE_ROTATE_MASK) {
> +     case DRM_MODE_ROTATE_0:
> +             rot = ROT_0;
> +             break;
> +     case DRM_MODE_ROTATE_90:
> +             rot = ROT_90;
> +             break;
> +     case DRM_MODE_ROTATE_180:
> +             rot = ROT_180;
> +             break;
> +     case DRM_MODE_ROTATE_270:
> +             rot = ROT_270;
> +             break;
> +     default:
> +             rot = ROT_0;
> +             break;
> +     }
> +
> +     return rot;
> +}
> +
> +void plane_hw_update_format_colorspace(struct vs_dc *dc, u32 format,
> +                                    enum drm_color_encoding encoding, u8 id, 
> bool is_yuv)
> +{
> +     u32 offset = dc->planes[id].offset;
> +     struct dc_hw *hw = &dc->hw;
> +
> +     if (is_yuv) {
> +             if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                     dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG_EX + offset,
> +                                  PRIMARY_YUVCLAMP_EN, PRIMARY_RGB2RGB_EN);
> +             else
> +                     dc_set_clear(hw, DC_OVERLAY_CONFIG + offset,
> +                                  OVERLAY_CLAMP_EN, OVERLAY_RGB2RGB_EN);
> +
> +             switch (to_vs_yuv_color_space(encoding)) {
> +             case COLOR_SPACE_601:
> +                     load_yuv_to_rgb(hw, &hw->reg[id], offset, YUV601_2RGB);
> +                     break;
> +             case COLOR_SPACE_709:
> +                     load_yuv_to_rgb(hw, &hw->reg[id], offset, YUV709_2RGB);
> +                     break;
> +             case COLOR_SPACE_2020:
> +                     load_yuv_to_rgb(hw, &hw->reg[id], offset, YUV2020_2RGB);
> +                     break;
> +             default:
> +                     break;
> +             }
> +     } else {
> +             if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                     dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG_EX + offset,
> +                                  PRIMARY_RGB2RGB_EN, PRIMARY_YUVCLAMP_EN);
> +             else
> +                     dc_set_clear(hw, DC_OVERLAY_CONFIG + offset,
> +                                  OVERLAY_RGB2RGB_EN, OVERLAY_CLAMP_EN);
> +     }
> +}
> +
> +void plane_hw_update_address(struct vs_dc *dc, u8 id, u32 format, dma_addr_t 
> *dma_addr,
> +                          struct drm_framebuffer *drm_fb, struct drm_rect 
> *src)
> +{
> +     u32 offset = dc->planes[id].offset;
> +     struct dc_hw *hw = &dc->hw;
> +
> +     dc_write(hw, hw->reg[id].y_address + offset, dma_addr[0]);
> +     dc_write(hw, hw->reg[id].u_address + offset,
> +              format == DRM_FORMAT_YVU420 ?
> +              dma_addr[2] : dma_addr[1]);
> +     dc_write(hw, hw->reg[id].v_address + offset,
> +              format == DRM_FORMAT_YVU420 ?
> +              dma_addr[1] : dma_addr[2]);
> +     dc_write(hw, hw->reg[id].y_stride + offset, drm_fb->pitches[0]);
> +     dc_write(hw, hw->reg[id].u_stride + offset,
> +              format == DRM_FORMAT_YVU420 ?
> +              drm_fb->pitches[2] : drm_fb->pitches[1]);
> +     dc_write(hw, hw->reg[id].v_stride + offset,
> +              format == DRM_FORMAT_YVU420 ?
> +              drm_fb->pitches[1] : drm_fb->pitches[2]);
> +     dc_write(hw, hw->reg[id].size + offset,
> +              FB_SIZE(drm_rect_width(src) >> 16, drm_rect_height(src) >> 
> 16));
> +}
> +
> +void plane_hw_update_format(struct vs_dc *dc, u32 format, enum 
> drm_color_encoding encoding,
> +                         unsigned int rotation, bool visible, unsigned int 
> zpos,
> +                         u8 id, u8 display_id)
> +{
> +     u32 offset = dc->planes[id].offset;
> +     struct dc_hw *hw = &dc->hw;
> +
> +     if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1) {
> +             dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG + offset,
> +                          PRIMARY_FORMAT(update_vs_format(format)) |
> +                          PRIMARY_UV_SWIZ(update_uv_swizzle(format)) |
> +                          PRIMARY_SWIZ(update_swizzle(format)) |
> +                          PRIMARY_TILE(DRM_FORMAT_MOD_LINEAR) |
> +                          PRIMARY_YUV_COLOR(to_vs_yuv_color_space(encoding)) 
> |
> +                          PRIMARY_ROTATION(to_vs_rotation(rotation)),
> +                          PRIMARY_FORMAT_MASK |
> +                          PRIMARY_UV_SWIZ_MASK |
> +                          PRIMARY_SWIZ_MASK |
> +                          PRIMARY_TILE_MASK |
> +                          PRIMARY_YUV_COLOR_MASK |
> +                          PRIMARY_ROTATION_MASK |
> +                          PRIMARY_CLEAR_EN_MASK);
> +             dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG_EX + offset,
> +                          PRIMARY_DECODER_EN(false) |
> +                          PRIMARY_EN(visible) |
> +                          PRIMARY_ZPOS(zpos) |
> +                          PRIMARY_CHANNEL(display_id),
> +                          PRIMARY_DECODER_EN_EN_MASK |
> +                          PRIMARY_EN_MASK |
> +                          PRIMARY_ZPOS_MASK |
> +                          PRIMARY_CHANNEL_MASK);
> +     } else {
> +             dc_set_clear(hw, DC_OVERLAY_CONFIG + offset,
> +                          OVERLAY_FB_EN(visible) |
> +                          OVERLAY_FORMAT(update_vs_format(format)) |
> +                          OVERLAY_UV_SWIZ(update_uv_swizzle(format)) |
> +                          OVERLAY_SWIZ(update_swizzle(format)) |
> +                          OVERLAY_TILE(DRM_FORMAT_MOD_LINEAR) |
> +                          OVERLAY_YUV_COLOR(to_vs_yuv_color_space(encoding)) 
> |
> +                          OVERLAY_ROTATION(to_vs_rotation(rotation)),
> +                          OVERLAY_DEC_EN_MASK |
> +                          OVERLAY_CLEAR_EN_MASK |
> +                          OVERLAY_FB_EN_MASK |
> +                          OVERLAY_FORMAT_MASK |
> +                          OVERLAY_UV_SWIZ_MASK |
> +                          OVERLAY_SWIZ_MASK |
> +                          OVERLAY_TILE_MASK |
> +                          OVERLAY_YUV_COLOR_MASK |
> +                          OVERLAY_ROTATION_MASK);
> +
> +      dc_set_clear(hw, DC_OVERLAY_CONFIG_EX + offset,
> +                   OVERLAY_LAYER_SEL(zpos) |
> +                   OVERLAY_PANEL_SEL(display_id),
> +                   OVERLAY_LAYER_SEL_MASK |
> +                   OVERLAY_PANEL_SEL_MASK);
> +     }
> +}
> +
> +static u32 calc_factor(u32 src, u32 dest)

A comment is appreciated.

> +{
> +     u32 factor = 1 << 16;
> +
> +     if (src > 1 && dest > 1)
> +             factor = ((src - 1) << 16) / (dest - 1);
> +
> +     return factor;
> +}
> +
> +void plane_hw_update_scale(struct vs_dc *dc, struct drm_rect *src, struct 
> drm_rect *dst,
> +                        u8 id, u8 display_id, unsigned int rotation)
> +{
> +     u32 offset = dc->planes[id].offset;
> +     struct dc_hw *hw = &dc->hw;
> +
> +     int dst_w = drm_rect_width(dst);
> +     int dst_h = drm_rect_height(dst);
> +     int src_w, src_h, temp;
> +     u32 scale_factor_x;
> +     u32 scale_factor_y;
> +     bool enable_scale = false;
> +
> +     src_w = drm_rect_width(src) >> 16;
> +     src_h = drm_rect_height(src) >> 16;
> +
> +     if (drm_rotation_90_or_270(rotation)) {
> +             temp = src_w;
> +             src_w = src_h;
> +             src_h = temp;
> +     }
> +
> +     if (src_w != dst_w) {
> +             scale_factor_x = calc_factor(src_w, dst_w);
> +             enable_scale = true;
> +     } else {
> +             scale_factor_x = 1 << 16;
> +     }
> +     if (src_h != dst_h) {
> +             scale_factor_y = calc_factor(src_h, dst_h);
> +             enable_scale = true;
> +     } else {
> +             scale_factor_y = 1 << 16;
> +     }
> +     if (enable_scale) {
> +             dc_write(hw, hw->reg[id].scale_factor_x + offset, 
> scale_factor_x);
> +             dc_write(hw, hw->reg[id].scale_factor_y + offset, 
> scale_factor_y);
> +             if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                     dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG + offset, 
> PRIMARY_SCALE_EN, 0);
> +             else
> +                     dc_set_clear(hw, DC_OVERLAY_SCALE_CONFIG + offset, 
> OVERLAY_SCALE_EN, 0);
> +     } else {
> +             if (id == PRIMARY_PLANE_0 || id == PRIMARY_PLANE_1)
> +                     dc_set_clear(hw, DC_FRAMEBUFFER_CONFIG + offset, 0, 
> PRIMARY_SCALE_EN);
> +             else
> +                     dc_set_clear(hw, DC_OVERLAY_SCALE_CONFIG + offset, 0, 
> OVERLAY_SCALE_EN);
> +     }
> +
> +     dc_write(hw, hw->reg[id].top_left + offset, X_POS(dst->x1) | 
> Y_POS(dst->y1));
> +     dc_write(hw, hw->reg[id].bottom_right + offset, X_POS(dst->x2) | 
> Y_POS(dst->y2));
> +}
> +
> +void plane_hw_update_blend(struct vs_dc *dc, u16 alpha,
> +                        u16 pixel_blend_mode, u8 id, u8 display_id)
> +{
> +     u32 offset = dc->planes[id].offset;
> +     struct dc_hw *hw = &dc->hw;
> +
> +     dc_write(hw, hw->reg[id].src_global_color + offset, 
> PRIMARY_ALPHA_LEN(alpha >> 8));
> +     dc_write(hw, hw->reg[id].dst_global_color + offset, 
> PRIMARY_ALPHA_LEN(alpha >> 8));
> +     switch (pixel_blend_mode) {
> +     case DRM_MODE_BLEND_PREMULTI:
> +             dc_write(hw, hw->reg[id].blend_config + offset, BLEND_PREMULTI);
> +             break;
> +     case DRM_MODE_BLEND_COVERAGE:
> +             dc_write(hw, hw->reg[id].blend_config + offset, BLEND_COVERAGE);
> +             break;
> +     case DRM_MODE_BLEND_PIXEL_NONE:
> +             dc_write(hw, hw->reg[id].blend_config + offset, 
> BLEND_PIXEL_NONE);
> +             break;
> +     default:
> +             break;
> +     }
> +}
> diff --git a/drivers/gpu/drm/verisilicon/vs_dc_hw.h 
> b/drivers/gpu/drm/verisilicon/vs_dc_hw.h
> new file mode 100644
> index 000000000000..63d8d153f57f
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_dc_hw.h
> @@ -0,0 +1,493 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
> + */
> +
> +#ifndef __VS_DC_HW_H__
> +#define __VS_DC_HW_H__
> +
> +#include <linux/bitfield.h>
> +#include <linux/bits.h>
> +#include <drm/drm_atomic.h>
> +
> +#include "vs_type.h"
> +
> +#define UPDATE(x, h, l)                              FIELD_PREP(GENMASK(h, 
> l), x)
> +
> +#define AQ_INTR_ACKNOWLEDGE                  0x0010
> +#define AQ_INTR_ENBL                         0x0014
> +#define DC_HW_REVISION                               0x0024
> +#define DC_HW_CHIP_CID                               0x0030
> +
> +#define DC_REG_BASE                          0x0800
> +#define DC_REG_RANGE                         0x2000
> +#define DC_SEC_REG_OFFSET                    0x100000
> +
> +#define DC_FRAMEBUFFER_CONFIG                        0x1518
> +# define PRIMARY_FORMAT(x)                   ((x) << 26)
> +# define PRIMARY_FORMAT_MASK                 GENMASK(31, 26)
> +# define PRIMARY_UV_SWIZ(x)                  ((x) << 25)
> +# define PRIMARY_UV_SWIZ_MASK                        GENMASK(25, 25)
> +# define PRIMARY_SWIZ(x)                     ((x) << 23)
> +# define PRIMARY_SWIZ_MASK                   GENMASK(24, 23)
> +# define PRIMARY_SCALE_EN                    BIT(12)
> +# define PRIMARY_TILE(x)                     ((x) << 17)
> +# define PRIMARY_TILE_MASK                   GENMASK(21, 17)
> +# define PRIMARY_YUV_COLOR(x)                        ((x) << 14)
> +# define PRIMARY_YUV_COLOR_MASK                      GENMASK(16, 14)
> +# define PRIMARY_ROTATION(x)                 ((x) << 11)
> +# define PRIMARY_ROTATION_MASK                       GENMASK(13, 11)
> +# define PRIMARY_CLEAR_EN(x)                 ((x) << 8)
> +# define PRIMARY_CLEAR_EN_MASK                       GENMASK(8, 8)
> +
> +#define DC_FRAMEBUFFER_CONFIG_EX             0x1CC0
> +# define PRIMARY_CHANNEL(x)                  ((x) << 19)
> +# define PRIMARY_CHANNEL_MASK                        GENMASK(19, 19)
> +# define PRIMARY_ZPOS(x)                     ((x) << 16)
> +# define PRIMARY_ZPOS_MASK                   GENMASK(18, 16)
> +# define PRIMARY_EN(x)                               ((x) << 13)
> +# define PRIMARY_EN_MASK                     GENMASK(13, 13)
> +# define PRIMARY_SHADOW_EN                   BIT(12)
> +# define PRIMARY_YUVCLAMP_EN                 BIT(8)
> +# define PRIMARY_RGB2RGB_EN                  BIT(6)
> +# define PRIMARY_SYNC1_EN                    BIT(4)
> +# define PRIMARY_SYNC0_EN                    BIT(3)
> +# define PRIMARY_DECODER_EN(x)                       ((x) << 1)
> +# define PRIMARY_DECODER_EN_EN_MASK          GENMASK(1, 1)
> +
> +#define DC_FRAMEBUFFER_SCALE_CONFIG          0x1520
> +#define DC_FRAMEBUFFER_TOP_LEFT                      0x24D8
> +#define X_POS(x)                             (x)
> +#define Y_POS(x)                             ((x) << 15)
> +
> +#define DC_FRAMEBUFFER_BOTTOM_RIGHT          0x24E0
> +#define DC_FRAMEBUFFER_ADDRESS                       0x1400
> +#define DC_FRAMEBUFFER_U_ADDRESS             0x1530
> +#define DC_FRAMEBUFFER_V_ADDRESS             0x1538
> +#define DC_FRAMEBUFFER_STRIDE                        0x1408
> +#define DC_FRAMEBUFFER_U_STRIDE                      0x1800
> +#define DC_FRAMEBUFFER_V_STRIDE                      0x1808
> +#define DC_FRAMEBUFFER_SIZE                  0x1810
> +#define FB_SIZE(w, h)                                ((w) | ((h) << 15))
> +
> +#define DC_FRAMEBUFFER_SCALE_FACTOR_X                0x1828
> +#define DC_FRAMEBUFFER_SCALE_FACTOR_Y                0x1830
> +#define DC_FRAMEBUFFER_H_FILTER_COEF_INDEX   0x1838
> +#define DC_FRAMEBUFFER_H_FILTER_COEF_DATA    0x1A00
> +#define DC_FRAMEBUFFER_V_FILTER_COEF_INDEX   0x1A08
> +#define DC_FRAMEBUFFER_V_FILTER_COEF_DATA    0x1A10
> +#define DC_FRAMEBUFFER_INIT_OFFSET           0x1A20
> +#define DC_FRAMEBUFFER_COLOR_KEY             0x1508
> +#define DC_FRAMEBUFFER_COLOR_KEY_HIGH                0x1510
> +#define DC_FRAMEBUFFER_CLEAR_VALUE           0x1A18
> +#define DC_FRAMEBUFFER_COLOR_TABLE_INDEX     0x1818
> +#define DC_FRAMEBUFFER_COLOR_TABLE_DATA              0x1820
> +#define DC_FRAMEBUFFER_BG_COLOR                      0x1528
> +#define DC_FRAMEBUFFER_ROI_ORIGIN            0x1CB0
> +#define DC_FRAMEBUFFER_ROI_SIZE                      0x1CB8
> +#define DC_FRAMEBUFFER_WATER_MARK            0x1CE8
> +#define DC_FRAMEBUFFER_DEGAMMA_INDEX         0x1D88
> +#define DC_FRAMEBUFFER_DEGAMMA_DATA          0x1D90
> +#define DC_FRAMEBUFFER_DEGAMMA_EX_DATA               0x1D98
> +#define DC_FRAMEBUFFER_YUVTORGB_COEF0                0x1DA0
> +#define DC_FRAMEBUFFER_YUVTORGB_COEF1                0x1DA8
> +#define DC_FRAMEBUFFER_YUVTORGB_COEF2                0x1DB0
> +#define DC_FRAMEBUFFER_YUVTORGB_COEF3                0x1DB8
> +#define DC_FRAMEBUFFER_YUVTORGB_COEF4                0x1E00
> +#define DC_FRAMEBUFFER_YUVTORGB_COEFD0               0x1E08
> +#define DC_FRAMEBUFFER_YUVTORGB_COEFD1               0x1E10
> +#define DC_FRAMEBUFFER_YUVTORGB_COEFD2               0x1E18
> +#define DC_FRAMEBUFFER_Y_CLAMP_BOUND         0x1E88
> +#define DC_FRAMEBUFFER_UV_CLAMP_BOUND                0x1E90
> +#define DC_FRAMEBUFFER_RGBTORGB_COEF0                0x1E20
> +#define DC_FRAMEBUFFER_RGBTORGB_COEF1                0x1E28
> +#define DC_FRAMEBUFFER_RGBTORGB_COEF2                0x1E30
> +#define DC_FRAMEBUFFER_RGBTORGB_COEF3                0x1E38
> +#define DC_FRAMEBUFFER_RGBTORGB_COEF4                0x1E40
> +#define DC_FRAMEBUFFER_BLEND_CONFIG          0x2510
> +# define BLEND_PREMULTI                              0x3450
> +# define BLEND_COVERAGE                              0x3950
> +# define BLEND_PIXEL_NONE                    0x3548
> +
> +#define DC_FRAMEBUFFER_SRC_GLOBAL_COLOR              0x2500
> +# define PRIMARY_ALPHA_LEN(x)                        ((x) << 24)
> +
> +#define DC_FRAMEBUFFER_DST_GLOBAL_COLOR              0x2508
> +
> +#define DC_OVERLAY_CONFIG                    0x1540
> +# define OVERLAY_SHADOW_EN                   BIT(31)
> +# define OVERLAY_CLAMP_EN                    BIT(30)
> +# define OVERLAY_RGB2RGB_EN                  BIT(29)
> +# define OVERLAY_DEC_EN(x)                   ((x) << 27)
> +# define OVERLAY_DEC_EN_MASK                 GENMASK(27, 27)
> +# define OVERLAY_CLEAR_EN(x)                 ((x) << 25)
> +# define OVERLAY_CLEAR_EN_MASK                       GENMASK(25, 25)
> +# define OVERLAY_FB_EN(x)                    ((x) << 24)
> +# define OVERLAY_FB_EN_MASK                  GENMASK(24, 24)
> +# define OVERLAY_FORMAT(x)                   ((x) << 16)
> +# define OVERLAY_FORMAT_MASK                 GENMASK(21, 16)
> +# define OVERLAY_UV_SWIZ(x)                  ((x) << 15)
> +# define OVERLAY_UV_SWIZ_MASK                        GENMASK(15, 15)
> +# define OVERLAY_SWIZ(x)                     ((x) << 13)
> +# define OVERLAY_SWIZ_MASK                   GENMASK(14, 13)
> +# define OVERLAY_TILE(x)                     ((x) << 8)
> +# define OVERLAY_TILE_MASK                   GENMASK(12, 8)
> +# define OVERLAY_YUV_COLOR(x)                        ((x) << 5)
> +# define OVERLAY_YUV_COLOR_MASK                      GENMASK(7, 5)
> +# define OVERLAY_ROTATION(x)                 ((x) << 2)
> +# define OVERLAY_ROTATION_MASK                       GENMASK(4, 2)
> +
> +#define DC_OVERLAY_CONFIG_EX                 0x2540
> +# define OVERLAY_LAYER_SEL(x)                        ((x) << 0)
> +# define OVERLAY_LAYER_SEL_MASK                      GENMASK(2, 0)
> +# define OVERLAY_PANEL_SEL(x)                        ((x) << 3)
> +# define OVERLAY_PANEL_SEL_MASK                      GENMASK(3, 3)
> +
> +#define DC_OVERLAY_SCALE_CONFIG                      0x1C00
> +# define OVERLAY_SCALE_EN                    BIT(8)
> +
> +#define DC_OVERLAY_BLEND_CONFIG                      0x1580
> +#define DC_OVERLAY_TOP_LEFT                  0x1640
> +#define DC_OVERLAY_BOTTOM_RIGHT                      0x1680
> +#define DC_OVERLAY_ADDRESS                   0x15C0
> +#define DC_OVERLAY_U_ADDRESS                 0x1840
> +#define DC_OVERLAY_V_ADDRESS                 0x1880
> +#define DC_OVERLAY_STRIDE                    0x1600
> +#define DC_OVERLAY_U_STRIDE                  0x18C0
> +#define DC_OVERLAY_V_STRIDE                  0x1900
> +#define DC_OVERLAY_SIZE                              0x17C0
> +#define DC_OVERLAY_SCALE_FACTOR_X            0x1A40
> +#define DC_OVERLAY_SCALE_FACTOR_Y            0x1A80
> +#define DC_OVERLAY_H_FILTER_COEF_INDEX               0x1AC0
> +#define DC_OVERLAY_H_FILTER_COEF_DATA                0x1B00
> +#define DC_OVERLAY_V_FILTER_COEF_INDEX               0x1B40
> +#define DC_OVERLAY_V_FILTER_COEF_DATA                0x1B80
> +#define DC_OVERLAY_INIT_OFFSET                       0x1BC0
> +#define DC_OVERLAY_COLOR_KEY                 0x1740
> +#define DC_OVERLAY_COLOR_KEY_HIGH            0x1780
> +#define DC_OVERLAY_CLEAR_VALUE                       0x1940
> +#define DC_OVERLAY_COLOR_TABLE_INDEX         0x1980
> +#define DC_OVERLAY_COLOR_TABLE_DATA          0x19C0
> +#define DC_OVERLAY_SRC_GLOBAL_COLOR          0x16C0
> +# define OVERLAY_ALPHA_LEN(x)                        ((x) << 24)
> +
> +#define DC_OVERLAY_DST_GLOBAL_COLOR          0x1700
> +#define DC_OVERLAY_ROI_ORIGIN                        0x1D00
> +#define DC_OVERLAY_ROI_SIZE                  0x1D40
> +#define DC_OVERLAY_WATER_MARK                        0x1DC0
> +#define DC_OVERLAY_DEGAMMA_INDEX             0x2200
> +#define DC_OVERLAY_DEGAMMA_DATA                      0x2240
> +#define DC_OVERLAY_DEGAMMA_EX_DATA           0x2280
> +#define DC_OVERLAY_YUVTORGB_COEF0            0x1EC0
> +#define DC_OVERLAY_YUVTORGB_COEF1            0x1F00
> +#define DC_OVERLAY_YUVTORGB_COEF2            0x1F40
> +#define DC_OVERLAY_YUVTORGB_COEF3            0x1F80
> +#define DC_OVERLAY_YUVTORGB_COEF4            0x1FC0
> +#define DC_OVERLAY_YUVTORGB_COEFD0           0x2000
> +#define DC_OVERLAY_YUVTORGB_COEFD1           0x2040
> +#define DC_OVERLAY_YUVTORGB_COEFD2           0x2080
> +#define DC_OVERLAY_Y_CLAMP_BOUND             0x22C0
> +#define DC_OVERLAY_UV_CLAMP_BOUND            0x2300
> +#define DC_OVERLAY_RGBTORGB_COEF0            0x20C0
> +#define DC_OVERLAY_RGBTORGB_COEF1            0x2100
> +#define DC_OVERLAY_RGBTORGB_COEF2            0x2140
> +#define DC_OVERLAY_RGBTORGB_COEF3            0x2180
> +#define DC_OVERLAY_RGBTORGB_COEF4            0x21C0
> +
> +#define DC_CURSOR_CONFIG                     0x1468
> +# define CURSOR_HOT_X(x)                     ((x) << 16)
> +# define CURSOR_HOT_X_MASK                   GENMASK(23, 16)
> +# define CURSOR_HOT_y(x)                     ((x) << 8)
> +# define CURSOR_HOT_y_MASK                   GENMASK(15, 8)
> +# define CURSOR_SIZE(x)                              ((x) << 5)
> +# define CURSOR_SIZE_MASK                    GENMASK(7, 5)
> +# define CURSOR_VALID(x)                     ((x) << 3)
> +# define CURSOR_VALID_MASK                   GENMASK(3, 3)
> +# define CURSOR_TRIG_FETCH(x)                        ((x) << 2)
> +# define CURSOR_TRIG_FETCH_MASK                      GENMASK(2, 2)
> +# define CURSOR_FORMAT(x)                    ((x) << 0)
> +# define CURSOR_FORMAT_MASK                  GENMASK(1, 0)
> +# define CURSOR_FORMAT_DISABLE                       0
> +# define CURSOR_FORMAT_MARK                  1
> +# define CURSOR_FORMAT_A8R8G8B8                      2
> +
> +#define DC_CURSOR_ADDRESS                    0x146C
> +#define DC_CURSOR_LOCATION                   0x1470
> +# define X_LCOTION(x)                                (x)
> +# define Y_LCOTION(x)                                ((x) << 16)
> +
> +#define DC_CURSOR_BACKGROUND                 0x1474
> +#define DC_CURSOR_FOREGROUND                 0x1478
> +#define DC_CURSOR_CLK_GATING                 0x1484
> +#define DC_CURSOR_CONFIG_EX                  0x24E8
> +#define DC_CURSOR_OFFSET                     0x1080
> +
> +#define DC_DISPLAY_DITHER_CONFIG             0x1410
> +#define DC_DISPLAY_PANEL_CONFIG                      0x1418
> +# define PANEL_RGB2YUV_EN                    BIT(16)
> +# define PANEL_GAMMA_EN                              BIT(13)
> +# define PANEL_OUTPUT_EN                     BIT(12)
> +
> +#define DC_DISPLAY_PANEL_CONFIG_EX           0x2518
> +# define PANEL_SHADOW_EN                     BIT(0)
> +
> +#define DC_DISPLAY_DITHER_TABLE_LOW          0x1420
> +#define DC_DISPLAY_DITHER_TABLE_HIGH         0x1428
> +#define DC_DISPLAY_H                         0x1430
> +# define H_ACTIVE_LEN(x)                     (x)
> +# define H_TOTAL_LEN(x)                              ((x) << 16)
> +
> +#define DC_DISPLAY_H_SYNC                    0x1438
> +# define H_SYNC_START_LEN(x)                 (x)
> +# define H_SYNC_END_LEN(x)                   ((x) << 15)
> +# define H_PLUS_LEN(x)                               ((x) << 30)
> +# define H_POLARITY_LEN(x)                   ((x) << 31)
> +
> +#define DC_DISPLAY_V                         0x1440
> +# define V_ACTIVE_LEN(x)                     (x)
> +# define V_TOTAL_LEN(x)                              ((x) << 16)
> +
> +#define DC_DISPLAY_V_SYNC                    0x1448
> +# define V_SYNC_START_LEN(x)                 (x)
> +# define V_SYNC_END_LEN(x)                   ((x) << 15)
> +# define V_PLUS_LEN(x)                               ((x) << 30)
> +# define V_POLARITY_LEN(x)                   ((x) << 31)
> +
> +#define DC_DISPLAY_CURRENT_LOCATION          0x1450
> +#define DC_DISPLAY_GAMMA_INDEX                       0x1458
> +#define DC_DISPLAY_GAMMA_DATA                        0x1460
> +#define DC_DISPLAY_INT                               0x147C
> +#define DC_DISPLAY_INT_ENABLE                        0x1480
> +#define DC_DISPLAY_DBI_CONFIG                        0x1488
> +#define DC_DISPLAY_GENERAL_CONFIG            0x14B0
> +#define DC_DISPLAY_DPI_CONFIG                        0x14B8
> +#define DC_DISPLAY_PANEL_START                       0x1CCC
> +# define PANEL0_EN                           BIT(0)
> +# define PANEL1_EN                           BIT(1)
> +# define TWO_PANEL_EN                                BIT(2)
> +# define SYNC_EN                             BIT(3)
> +
> +#define DC_DISPLAY_DEBUG_COUNTER_SELECT              0x14D0
> +#define DC_DISPLAY_DEBUG_COUNTER_VALUE               0x14D8
> +#define DC_DISPLAY_DP_CONFIG                 0x1CD0
> +# define DP_SELECT                           BIT(3)
> +
> +#define DC_DISPLAY_GAMMA_EX_INDEX            0x1CF0
> +#define DC_DISPLAY_GAMMA_EX_DATA             0x1CF8
> +#define DC_DISPLAY_GAMMA_EX_ONE_DATA         0x1D80
> +#define DC_DISPLAY_RGBTOYUV_COEF0            0x1E48
> +#define DC_DISPLAY_RGBTOYUV_COEF1            0x1E50
> +#define DC_DISPLAY_RGBTOYUV_COEF2            0x1E58
> +#define DC_DISPLAY_RGBTOYUV_COEF3            0x1E60
> +#define DC_DISPLAY_RGBTOYUV_COEF4            0x1E68
> +#define DC_DISPLAY_RGBTOYUV_COEFD0           0x1E70
> +#define DC_DISPLAY_RGBTOYUV_COEFD1           0x1E78
> +#define DC_DISPLAY_RGBTOYUV_COEFD2           0x1E80
> +
> +#define DC_CLK_GATTING                               0x1A28
> +#define DC_QOS_CONFIG                                0x1A38
> +
> +#define DC_TRANSPARENCY_OPAQUE                       0x00
> +#define DC_TRANSPARENCY_KEY                  0x02
> +#define DC_DISPLAY_DITHERTABLE_LOW           0x7B48F3C0
> +#define DC_DISPLAY_DITHERTABLE_HIGH          0x596AD1E2
> +
> +#define DC_TILE_MODE4X4      0x15
> +
> +#define GAMMA_SIZE                           256
> +#define GAMMA_EX_SIZE                                300
> +#define DEGAMMA_SIZE                         260
> +
> +#define RGB_TO_RGB_TABLE_SIZE                        9
> +#define YUV_TO_RGB_TABLE_SIZE                        16
> +#define RGB_TO_YUV_TABLE_SIZE                        12
> +
> +#define DC_LAYER_NUM 6
> +#define DC_DISPLAY_NUM       2
> +#define DC_CURSOR_NUM        2
> +
> +enum dc_hw_plane_id {
> +     PRIMARY_PLANE_0,
> +     OVERLAY_PLANE_0,
> +     OVERLAY_PLANE_1,
> +     PRIMARY_PLANE_1,
> +     OVERLAY_PLANE_2,
> +     OVERLAY_PLANE_3,
> +     CURSOR_PLANE_0,
> +     CURSOR_PLANE_1,
> +     PLANE_NUM
> +};
> +
> +enum dc_hw_color_format {
> +     FORMAT_X4R4G4B4,
> +     FORMAT_A4R4G4B4,
> +     FORMAT_X1R5G5B5,
> +     FORMAT_A1R5G5B5,
> +     FORMAT_R5G6B5,
> +     FORMAT_X8R8G8B8,
> +     FORMAT_A8R8G8B8,
> +     FORMAT_YUY2,
> +     FORMAT_UYVY,
> +     FORMAT_INDEX8,
> +     FORMAT_MONOCHROME,
> +     FORMAT_YV12 = 0xf,
> +     FORMAT_A8,
> +     FORMAT_NV12,
> +     FORMAT_NV16,
> +     FORMAT_RG16,
> +     FORMAT_R8,
> +     FORMAT_NV12_10BIT,
> +     FORMAT_A2R10G10B10,
> +     FORMAT_NV16_10BIT,
> +     FORMAT_INDEX1,
> +     FORMAT_INDEX2,
> +     FORMAT_INDEX4,
> +     FORMAT_P010,
> +     FORMAT_YUV444,
> +     FORMAT_YUV444_10BIT,
> +};
> +
> +enum dc_hw_yuv_color_space {
> +     COLOR_SPACE_601 = 0,
> +     COLOR_SPACE_709 = 1,
> +     COLOR_SPACE_2020 = 3,
> +};
> +
> +enum dc_hw_rotation {
> +     ROT_0 = 0,
> +     ROT_90 = 4,
> +     ROT_180 = 5,
> +     ROT_270 = 6,
> +     FLIP_X = 1,
> +     FLIP_Y = 2,
> +     FLIP_XY = 3,
> +};
> +
> +enum dc_hw_swizzle {
> +     SWIZZLE_ARGB = 0,
> +     SWIZZLE_RGBA,
> +     SWIZZLE_ABGR,
> +     SWIZZLE_BGRA,
> +};
> +
> +enum dc_hw_out {
> +     OUT_DPI,
> +     OUT_DP,
> +};
> +
> +enum dc_hw_cursor_size {
> +     CURSOR_SIZE_32X32 = 0,
> +     CURSOR_SIZE_64X64,
> +};
> +
> +struct dc_hw_plane_reg {
> +     u32 y_address;
> +     u32 u_address;
> +     u32 v_address;
> +     u32 y_stride;
> +     u32 u_stride;
> +     u32 v_stride;
> +     u32 size;
> +     u32 top_left;
> +     u32 bottom_right;
> +     u32 scale_factor_x;
> +     u32 scale_factor_y;
> +     u32 h_filter_coef_index;
> +     u32 h_filter_coef_data;
> +     u32 v_filter_coef_index;
> +     u32 v_filter_coef_data;
> +     u32 init_offset;
> +     u32 color_key;
> +     u32 color_key_high;
> +     u32 clear_value;
> +     u32 color_table_index;
> +     u32 color_table_data;
> +     u32 scale_config;
> +     u32 water_mark;
> +     u32 degamma_index;
> +     u32 degamma_data;
> +     u32 degamma_ex_data;
> +     u32 src_global_color;
> +     u32 dst_global_color;
> +     u32 blend_config;
> +     u32 roi_origin;
> +     u32 roi_size;
> +     u32 yuv_to_rgb_coef0;
> +     u32 yuv_to_rgb_coef1;
> +     u32 yuv_to_rgb_coef2;
> +     u32 yuv_to_rgb_coef3;
> +     u32 yuv_to_rgb_coef4;
> +     u32 yuv_to_rgb_coefd0;
> +     u32 yuv_to_rgb_coefd1;
> +     u32 yuv_to_rgb_coefd2;
> +     u32 y_clamp_bound;
> +     u32 uv_clamp_bound;
> +     u32 rgb_to_rgb_coef0;
> +     u32 rgb_to_rgb_coef1;
> +     u32 rgb_to_rgb_coef2;
> +     u32 rgb_to_rgb_coef3;
> +     u32 rgb_to_rgb_coef4;
> +};
> +
> +struct dc_hw_gamma {
> +     u16 gamma[GAMMA_EX_SIZE][3];
> +};
> +
> +struct dc_hw_read {

Not used, please drop.

> +     u32                     reg;
> +     u32                     value;
> +};
> +
> +struct dc_hw {
> +     enum dc_hw_out          out[DC_DISPLAY_NUM];
> +     void                    *hi_base;
> +     void                    *reg_base;
> +     struct dc_hw_plane_reg  reg[DC_LAYER_NUM];
> +
> +     struct dc_hw_gamma      gamma[DC_DISPLAY_NUM];
> +     struct vs_dc_info       *info;
> +};
> +
> +struct vs_dc_plane {
> +     enum dc_hw_plane_id id;
> +     u32 offset;
> +};
> +
> +struct vs_dc {
> +     struct vs_crtc          *crtc[DC_DISPLAY_NUM];

Not defined here. Please drop and add when it is actually defined.

> +     struct dc_hw            hw;
> +
> +     struct vs_dc_plane      planes[PLANE_NUM];
> +};
> +
> +int dc_hw_init(struct vs_dc *dc);
> +void dc_hw_disable_plane(struct vs_dc *dc, u8 id);
> +void dc_hw_update_cursor(struct dc_hw *hw, u8 id, dma_addr_t dma_addr,
> +                      u32 crtc_w, u32 crtc_x, u32 crtc_y,
> +                      s32 hotspot_x, int32_t hotspot_y);
> +void dc_hw_disable_cursor(struct dc_hw *hw, u8 id);
> +void dc_hw_update_gamma(struct dc_hw *hw, u8 id, u16 index,
> +                     u16 r, u16 g, u16 b);
> +void dc_hw_enable_gamma(struct dc_hw *hw, u8 id, bool enable);
> +void dc_hw_enable(struct dc_hw *hw, int id, struct drm_display_mode *mode,
> +               u8 encoder_type, u32 output_fmt);
> +void dc_hw_disable(struct dc_hw *hw, int id);
> +void dc_hw_enable_interrupt(struct dc_hw *hw);
> +void dc_hw_disable_interrupt(struct dc_hw *hw);
> +u32 dc_hw_get_interrupt(struct dc_hw *hw);
> +void dc_hw_enable_shadow_register(struct vs_dc *dc, bool enable);
> +void dc_hw_set_out(struct dc_hw *hw, enum dc_hw_out out, u8 id);
> +void dc_hw_commit(struct dc_hw *hw);
> +void plane_hw_update_format_colorspace(struct vs_dc *dc, u32 format,
> +                                    enum drm_color_encoding encoding, u8 id, 
> bool is_yuv);
> +void plane_hw_update_address(struct vs_dc *dc, u8 id, u32 format, dma_addr_t 
> *dma_addr,
> +                          struct drm_framebuffer *drm_fb, struct drm_rect 
> *src);
> +void plane_hw_update_format(struct vs_dc *dc, u32 format, enum 
> drm_color_encoding encoding,
> +                         unsigned int rotation, bool visible, unsigned int 
> zpos,
> +                         u8 id, u8 display_id);
> +void plane_hw_update_scale(struct vs_dc *dc, struct drm_rect *src, struct 
> drm_rect *dst,
> +                        u8 id, u8 display_id, unsigned int rotation);
> +void plane_hw_update_blend(struct vs_dc *dc, u16 alpha, u16 pixel_blend_mode,
> +                        u8 id, u8 display_id);

Could you please settle on a single prefix for all your function names?
Ideally it should be close to the driver name. It's hard to understand
that the function comes from the verisilicon driver if its name starts
from dc_ or especially with plane_.

I'd strongly suggest to stop defining anything outside of the selected
vs_ namespace.

> +
> +#endif /* __VS_DC_HW_H__ */
> diff --git a/drivers/gpu/drm/verisilicon/vs_type.h 
> b/drivers/gpu/drm/verisilicon/vs_type.h
> new file mode 100644
> index 000000000000..30ccc2eda48b
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_type.h
> @@ -0,0 +1,84 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
> + */
> +
> +#ifndef __VS_TYPE_H__
> +#define __VS_TYPE_H__
> +
> +#include <drm/drm_plane.h>

These types are largely unused within this patch. Please drop all the
unused parts and add them later, when required.

> +
> +struct vs_plane_primary_info {
> +     u8 id;
> +     unsigned int num_formats;
> +     const u32 *formats;
> +     u8 num_modifiers;
> +     const u64 *modifiers;
> +     unsigned int min_width;
> +     unsigned int min_height;
> +     unsigned int max_width;
> +     unsigned int max_height;
> +     unsigned int rotation;
> +     unsigned int color_encoding;
> +
> +     int min_scale; /* 16.16 fixed point */
> +     int max_scale; /* 16.16 fixed point */
> +
> +     u8       zpos;
> +
> +};
> +
> +struct vs_plane_overlay_info {
> +     u8 id;
> +     unsigned int num_formats;
> +     const u32 *formats;
> +     u8 num_modifiers;
> +     const u64 *modifiers;
> +     unsigned int min_width;
> +     unsigned int min_height;
> +     unsigned int max_width;
> +     unsigned int max_height;
> +     unsigned int rotation;
> +     unsigned int color_encoding;
> +
> +     int min_scale; /* 16.16 fixed point */
> +     int max_scale; /* 16.16 fixed point */
> +
> +     u8       zpos;
> +
> +};
> +
> +struct vs_plane_cursor_info {
> +     u8 id;
> +     unsigned int num_formats;
> +     const u32 *formats;
> +     unsigned int min_width;
> +     unsigned int min_height;
> +     unsigned int max_width;
> +     unsigned int max_height;
> +     u8       zpos;
> +
> +};
> +
> +struct vs_dc_info {
> +     const char *name;
> +
> +     u8 panel_num;
> +
> +     /* planes */
> +     u8 layer_num;
> +     u8 primary_num;
> +     u8 overlay_num;
> +     u8 cursor_num;
> +     const struct vs_plane_primary_info *primary;
> +     const struct vs_plane_overlay_info *overlay;
> +     const struct vs_plane_cursor_info *cursor;
> +
> +     /* 0 means no gamma LUT */
> +     u16 gamma_size;
> +     u8 gamma_bits;
> +
> +     u16 pitch_alignment;
> +};
> +
> +#endif /* __VS_TYPE_H__ */
> -- 
> 2.27.0
> 

-- 
With best wishes
Dmitry

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