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Message-ID: <ed66711a-4c24-40d1-8361-40325ae915f5@starfivetech.com>
Date: Wed, 6 Dec 2023 20:53:12 +0800
From: Keith Zhao <keith.zhao@...rfivetech.com>
To: Maxime Ripard <mripard@...nel.org>
CC: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
"tzimmermann@...e.de" <tzimmermann@...e.de>,
"airlied@...il.com" <airlied@...il.com>,
"krzysztof.kozlowski+dt@...aro.org"
<krzysztof.kozlowski+dt@...aro.org>,
William Qiu <william.qiu@...rfivetech.com>,
Xingyu Wu <xingyu.wu@...rfivetech.com>,
"paul.walmsley@...ive.com" <paul.walmsley@...ive.com>,
"aou@...s.berkeley.edu" <aou@...s.berkeley.edu>,
"palmer@...belt.com" <palmer@...belt.com>,
"p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
Shengyang Chen <shengyang.chen@...rfivetech.com>,
Jack Zhu <jack.zhu@...rfivetech.com>,
Changhuang Liang <changhuang.liang@...rfivetech.com>,
"maarten.lankhorst@...ux.intel.com"
<maarten.lankhorst@...ux.intel.com>,
"suijingfeng@...ngson.cn" <suijingfeng@...ngson.cn>
Subject: Re: [v3 4/6] drm/vs: Add KMS crtc&plane
On 2023/12/6 16:55, Maxime Ripard wrote:
> On Mon, Dec 04, 2023 at 08:33:13PM +0800, Keith Zhao wrote:
>> +static const struct vs_plane_info dc_hw_planes_rev0[PLANE_NUM] = {
>> + {
>> + .name = "Primary",
>> + .id = PRIMARY_PLANE_0,
>> + .type = DRM_PLANE_TYPE_PRIMARY,
>> + .num_formats = ARRAY_SIZE(primary_overlay_format0),
>> + .formats = primary_overlay_format0,
>> + .num_modifiers = ARRAY_SIZE(format_modifier0),
>> + .modifiers = format_modifier0,
>> + .min_width = 0,
>> + .min_height = 0,
>> + .max_width = 4096,
>> + .max_height = 4096,
>> + .rotation = DRM_MODE_ROTATE_0 |
>> + DRM_MODE_ROTATE_90 |
>> + DRM_MODE_ROTATE_180 |
>> + DRM_MODE_ROTATE_270 |
>> + DRM_MODE_REFLECT_X |
>> + DRM_MODE_REFLECT_Y,
>> + .blend_mode = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
>> + BIT(DRM_MODE_BLEND_PREMULTI) |
>> + BIT(DRM_MODE_BLEND_COVERAGE),
>> + .color_encoding = BIT(DRM_COLOR_YCBCR_BT709) |
>> + BIT(DRM_COLOR_YCBCR_BT2020),
>> + .degamma_size = DEGAMMA_SIZE,
>> + .min_scale = FRAC_16_16(1, 3),
>> + .max_scale = FRAC_16_16(10, 1),
>> + .zpos = 0,
>> + .watermark = true,
>> + .color_mgmt = true,
>> + .roi = true,
>> + },
>> + {
>> + .name = "Overlay",
>> + .id = OVERLAY_PLANE_0,
>> + .type = DRM_PLANE_TYPE_OVERLAY,
>> + .num_formats = ARRAY_SIZE(primary_overlay_format0),
>> + .formats = primary_overlay_format0,
>> + .num_modifiers = ARRAY_SIZE(format_modifier0),
>> + .modifiers = format_modifier0,
>> + .min_width = 0,
>> + .min_height = 0,
>> + .max_width = 4096,
>> + .max_height = 4096,
>> + .rotation = DRM_MODE_ROTATE_0 |
>> + DRM_MODE_ROTATE_90 |
>> + DRM_MODE_ROTATE_180 |
>> + DRM_MODE_ROTATE_270 |
>> + DRM_MODE_REFLECT_X |
>> + DRM_MODE_REFLECT_Y,
>> + .blend_mode = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
>> + BIT(DRM_MODE_BLEND_PREMULTI) |
>> + BIT(DRM_MODE_BLEND_COVERAGE),
>> + .color_encoding = BIT(DRM_COLOR_YCBCR_BT709) |
>> + BIT(DRM_COLOR_YCBCR_BT2020),
>> + .degamma_size = DEGAMMA_SIZE,
>> + .min_scale = FRAC_16_16(1, 3),
>> + .max_scale = FRAC_16_16(10, 1),
>> + .zpos = 1,
>> + .watermark = true,
>> + .color_mgmt = true,
>> + .roi = true,
>> + },
>> + {
>> + .name = "Overlay_1",
>> + .id = OVERLAY_PLANE_1,
>> + .type = DRM_PLANE_TYPE_OVERLAY,
>> + .num_formats = ARRAY_SIZE(primary_overlay_format0),
>> + .formats = primary_overlay_format0,
>> + .num_modifiers = ARRAY_SIZE(secondary_format_modifiers),
>> + .modifiers = secondary_format_modifiers,
>> + .min_width = 0,
>> + .min_height = 0,
>> + .max_width = 4096,
>> + .max_height = 4096,
>> + .rotation = 0,
>> + .blend_mode = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
>> + BIT(DRM_MODE_BLEND_PREMULTI) |
>> + BIT(DRM_MODE_BLEND_COVERAGE),
>> + .color_encoding = BIT(DRM_COLOR_YCBCR_BT709) |
>> + BIT(DRM_COLOR_YCBCR_BT2020),
>> + .degamma_size = DEGAMMA_SIZE,
>> + .min_scale = DRM_PLANE_NO_SCALING,
>> + .max_scale = DRM_PLANE_NO_SCALING,
>> + .zpos = 2,
>> + .watermark = true,
>> + .color_mgmt = true,
>> + .roi = true,
>> + },
>> + {
>> + .name = "Primary_1",
>> + .id = PRIMARY_PLANE_1,
>> + .type = DRM_PLANE_TYPE_PRIMARY,
>> + .num_formats = ARRAY_SIZE(primary_overlay_format0),
>> + .formats = primary_overlay_format0,
>> + .num_modifiers = ARRAY_SIZE(format_modifier0),
>> + .modifiers = format_modifier0,
>> + .min_width = 0,
>> + .min_height = 0,
>> + .max_width = 4096,
>> + .max_height = 4096,
>> + .rotation = DRM_MODE_ROTATE_0 |
>> + DRM_MODE_ROTATE_90 |
>> + DRM_MODE_ROTATE_180 |
>> + DRM_MODE_ROTATE_270 |
>> + DRM_MODE_REFLECT_X |
>> + DRM_MODE_REFLECT_Y,
>> + .blend_mode = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
>> + BIT(DRM_MODE_BLEND_PREMULTI) |
>> + BIT(DRM_MODE_BLEND_COVERAGE),
>> + .color_encoding = BIT(DRM_COLOR_YCBCR_BT709) |
>> + BIT(DRM_COLOR_YCBCR_BT2020),
>> + .degamma_size = DEGAMMA_SIZE,
>> + .min_scale = FRAC_16_16(1, 3),
>> + .max_scale = FRAC_16_16(10, 1),
>> + .zpos = 3,
>> + .watermark = true,
>> + .color_mgmt = true,
>> + .roi = true,
>> + },
>> + {
>> + .name = "Overlay_2",
>> + .id = OVERLAY_PLANE_2,
>> + .type = DRM_PLANE_TYPE_OVERLAY,
>> + .num_formats = ARRAY_SIZE(primary_overlay_format0),
>> + .formats = primary_overlay_format0,
>> + .num_modifiers = ARRAY_SIZE(format_modifier0),
>> + .modifiers = format_modifier0,
>> + .min_width = 0,
>> + .min_height = 0,
>> + .max_width = 4096,
>> + .max_height = 4096,
>> + .rotation = DRM_MODE_ROTATE_0 |
>> + DRM_MODE_ROTATE_90 |
>> + DRM_MODE_ROTATE_180 |
>> + DRM_MODE_ROTATE_270 |
>> + DRM_MODE_REFLECT_X |
>> + DRM_MODE_REFLECT_Y,
>> + .blend_mode = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
>> + BIT(DRM_MODE_BLEND_PREMULTI) |
>> + BIT(DRM_MODE_BLEND_COVERAGE),
>> + .color_encoding = BIT(DRM_COLOR_YCBCR_BT709) |
>> + BIT(DRM_COLOR_YCBCR_BT2020),
>> + .degamma_size = DEGAMMA_SIZE,
>> + .min_scale = FRAC_16_16(1, 3),
>> + .max_scale = FRAC_16_16(10, 1),
>> + .zpos = 4,
>> + .watermark = true,
>> + .color_mgmt = true,
>> + .roi = true,
>> + },
>> + {
>> + .name = "Overlay_3",
>> + .id = OVERLAY_PLANE_3,
>> + .type = DRM_PLANE_TYPE_OVERLAY,
>> + .num_formats = ARRAY_SIZE(primary_overlay_format0),
>> + .formats = primary_overlay_format0,
>> + .num_modifiers = ARRAY_SIZE(secondary_format_modifiers),
>> + .modifiers = secondary_format_modifiers,
>> + .min_width = 0,
>> + .min_height = 0,
>> + .max_width = 4096,
>> + .max_height = 4096,
>> + .rotation = 0,
>> + .blend_mode = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
>> + BIT(DRM_MODE_BLEND_PREMULTI) |
>> + BIT(DRM_MODE_BLEND_COVERAGE),
>> + .color_encoding = BIT(DRM_COLOR_YCBCR_BT709) |
>> + BIT(DRM_COLOR_YCBCR_BT2020),
>> + .degamma_size = DEGAMMA_SIZE,
>> + .min_scale = DRM_PLANE_NO_SCALING,
>> + .max_scale = DRM_PLANE_NO_SCALING,
>> + .zpos = 5,
>> + .watermark = true,
>> + .color_mgmt = true,
>> + .roi = true,
>> + },
>> + {
>> + .name = "Cursor",
>> + .id = CURSOR_PLANE_0,
>> + .type = DRM_PLANE_TYPE_CURSOR,
>> + .num_formats = ARRAY_SIZE(cursor_formats),
>> + .formats = cursor_formats,
>> + .num_modifiers = 0,
>> + .modifiers = NULL,
>> + .min_width = 32,
>> + .min_height = 32,
>> + .max_width = 64,
>> + .max_height = 64,
>> + .rotation = 0,
>> + .degamma_size = 0,
>> + .min_scale = DRM_PLANE_NO_SCALING,
>> + .max_scale = DRM_PLANE_NO_SCALING,
>> + .zpos = 255,
>> + .watermark = false,
>> + .color_mgmt = false,
>> + .roi = false,
>> + },
>> + {
>> + .name = "Cursor_1",
>> + .id = CURSOR_PLANE_1,
>> + .type = DRM_PLANE_TYPE_CURSOR,
>> + .num_formats = ARRAY_SIZE(cursor_formats),
>> + .formats = cursor_formats,
>> + .num_modifiers = 0,
>> + .modifiers = NULL,
>> + .min_width = 32,
>> + .min_height = 32,
>> + .max_width = 64,
>> + .max_height = 64,
>> + .rotation = 0,
>> + .degamma_size = 0,
>> + .min_scale = DRM_PLANE_NO_SCALING,
>> + .max_scale = DRM_PLANE_NO_SCALING,
>> + .zpos = 255,
>> + .watermark = false,
>> + .color_mgmt = false,
>> + .roi = false,
>> + },
>> +};
>> +
>> +static const struct vs_dc_info dc8200_info = {
>> + .name = "DC8200",
>> + .panel_num = 2,
>> + .plane_num = 8,
>> + .planes = dc_hw_planes_rev0,
>> + .layer_num = 6,
>> + .max_bpc = 10,
>> + .color_formats = DRM_COLOR_FORMAT_RGB444 |
>> + DRM_COLOR_FORMAT_YCBCR444 |
>> + DRM_COLOR_FORMAT_YCBCR422 |
>> + DRM_COLOR_FORMAT_YCBCR420,
>> + .gamma_size = GAMMA_EX_SIZE,
>> + .gamma_bits = 12,
>> + .pitch_alignment = 128,
>> + .pipe_sync = false,
>> + .background = true,
>> + .panel_sync = true,
>> + .cap_dec = true,
>> +};
>
> I really think that entire thing is to workaround a suboptimal device
> tree binding. You should have two CRTCs in the device tree, you'll probe
> twice, and you won't get to do that whole dance.
>
i got you means “two CRTCs in the device tree，probe twice"
maybe also I can split the common ctrc helper fun into 2 ,
current the driver probe once and map 2 port as ctrc node ,
>
>> +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;
>> +};
>
> That's your plane state.
>
>> +struct dc_hw_fb {
>> + u32 y_address;
>> + u32 u_address;
>> + u32 v_address;
>> + u32 clear_value;
>> + u32 water_mark;
>> + u16 y_stride;
>> + u16 u_stride;
>> + u16 v_stride;
>> + u16 width;
>> + u16 height;
>> + u8 format;
>> + u8 tile_mode;
>> + u8 rotation;
>> + u8 yuv_color_space;
>> + u8 swizzle;
>> + u8 uv_swizzle;
>> + u8 zpos;
>> + u8 display_id;
>> + bool clear_enable;
>> + bool dec_enable;
>> + bool enable;
>> + bool dirty;
>> +};
>
> Your framebuffer
>
>> +struct dc_hw_scale {
>> + u32 scale_factor_x;
>> + u32 scale_factor_y;
>> + bool enable;
>> + bool dirty;
>> +};
>> +
>> +struct dc_hw_position {
>> + u16 start_x;
>> + u16 start_y;
>> + u16 end_x;
>> + u16 end_y;
>> + bool dirty;
>> +};
>> +
>> +struct dc_hw_blend {
>> + u8 alpha;
>> + u8 blend_mode;
>> + bool dirty;
>> +};
>> +
>> +struct dc_hw_colorkey {
>> + u32 colorkey;
>> + u32 colorkey_high;
>> + u8 transparency;
>> + bool dirty;
>> +};
>
> Your CRTC state.
>
>> +struct dc_hw_roi {
>> + u16 x;
>> + u16 y;
>> + u16 width;
>> + u16 height;
>> + bool enable;
>> + bool dirty;
>> +};
>> +
>> +struct dc_hw_cursor {
>> + u32 address;
>> + u16 x;
>> + u16 y;
>> + u16 hot_x;
>> + u16 hot_y;
>> + u8 size;
>> + u8 display_id;
>> + bool enable;
>> + bool dirty;
>> +};
>> +
>> +struct dc_hw_display {
>> + u32 bus_format;
>> + u16 h_active;
>> + u16 h_total;
>> + u16 h_sync_start;
>> + u16 h_sync_end;
>> + u16 v_active;
>> + u16 v_total;
>> + u16 v_sync_start;
>> + u16 v_sync_end;
>> + u8 id;
>> + bool h_sync_polarity;
>> + bool v_sync_polarity;
>> + bool enable;
>> +};
>
> Your display mode.
>
> Really, you have the huge majority of those informations already
> available, there's no need to duplicate it. And chances are you'll
> create bugs in the process.
> Maxime
ok let me try it,
This will be another relatively big change.
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