From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/drm/drm_fourcc.h | 258 ++++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 241 insertions(+), 17 deletions(-)
diff --git a/kernel/include/drm/drm_fourcc.h b/kernel/include/drm/drm_fourcc.h
index f7c9f36..156b122 100644
--- a/kernel/include/drm/drm_fourcc.h
+++ b/kernel/include/drm/drm_fourcc.h
@@ -52,25 +52,86 @@
/**
* struct drm_format_info - information about a DRM format
- * @format: 4CC format identifier (DRM_FORMAT_*)
- * @depth: Color depth (number of bits per pixel excluding padding bits),
- * valid for a subset of RGB formats only. This is a legacy field, do not
- * use in new code and set to 0 for new formats.
- * @num_planes: Number of color planes (1 to 3)
- * @bpp: Number of bits per pixel (per plane)
- * @hsub: Horizontal chroma subsampling factor
- * @vsub: Vertical chroma subsampling factor
- * @has_alpha: Does the format embeds an alpha component?
- * @is_yuv: Is it a YUV format?
*/
struct drm_format_info {
+ /** @format: 4CC format identifier (DRM_FORMAT_*) */
u32 format;
+
+ /**
+ * @depth:
+ *
+ * Color depth (number of bits per pixel excluding padding bits),
+ * valid for a subset of RGB formats only. This is a legacy field, do
+ * not use in new code and set to 0 for new formats.
+ */
u8 depth;
+
+ /** @num_planes: Number of color planes (1 to 3) */
u8 num_planes;
- u8 bpp[3];
+
+ union {
+ /**
+ * @cpp:
+ *
+ * Number of bytes per pixel (per plane), this is aliased with
+ * @char_per_block. It is deprecated in favour of using the
+ * triplet @char_per_block, @block_w, @block_h for better
+ * describing the pixel format.
+ */
+ u8 cpp[4];
+
+ /**
+ * @char_per_block:
+ *
+ * Number of bytes per block (per plane), where blocks are
+ * defined as a rectangle of pixels which are stored next to
+ * each other in a byte aligned memory region. Together with
+ * @block_w and @block_h this is used to properly describe tiles
+ * in tiled formats or to describe groups of pixels in packed
+ * formats for which the memory needed for a single pixel is not
+ * byte aligned.
+ *
+ * @cpp has been kept for historical reasons because there are
+ * a lot of places in drivers where it's used. In drm core for
+ * generic code paths the preferred way is to use
+ * @char_per_block, drm_format_info_block_width() and
+ * drm_format_info_block_height() which allows handling both
+ * block and non-block formats in the same way.
+ *
+ * For formats that are intended to be used only with non-linear
+ * modifiers both @cpp and @char_per_block must be 0 in the
+ * generic format table. Drivers could supply accurate
+ * information from their drm_mode_config.get_format_info hook
+ * if they want the core to be validating the pitch.
+ */
+ u8 char_per_block[4];
+ };
+
+ /**
+ * @block_w:
+ *
+ * Block width in pixels, this is intended to be accessed through
+ * drm_format_info_block_width()
+ */
+ u8 block_w[4];
+
+ /**
+ * @block_h:
+ *
+ * Block height in pixels, this is intended to be accessed through
+ * drm_format_info_block_height()
+ */
+ u8 block_h[4];
+
+ /** @hsub: Horizontal chroma subsampling factor */
u8 hsub;
+ /** @vsub: Vertical chroma subsampling factor */
u8 vsub;
+
+ /** @has_alpha: Does the format embeds an alpha component? */
bool has_alpha;
+
+ /** @is_yuv: Is it a YUV format? */
bool is_yuv;
};
@@ -82,18 +143,181 @@
char str[32];
};
+/**
+ * drm_format_info_is_yuv_packed - check that the format info matches a YUV
+ * format with data laid in a single plane
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a packed YUV format.
+ */
+static inline bool
+drm_format_info_is_yuv_packed(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->num_planes == 1;
+}
+
+/**
+ * drm_format_info_is_yuv_semiplanar - check that the format info matches a YUV
+ * format with data laid in two planes (luminance and chrominance)
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a semiplanar YUV format.
+ */
+static inline bool
+drm_format_info_is_yuv_semiplanar(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->num_planes == 2;
+}
+
+/**
+ * drm_format_info_is_yuv_planar - check that the format info matches a YUV
+ * format with data laid in three planes (one for each YUV component)
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a planar YUV format.
+ */
+static inline bool
+drm_format_info_is_yuv_planar(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->num_planes == 3;
+}
+
+/**
+ * drm_format_info_is_yuv_sampling_410 - check that the format info matches a
+ * YUV format with 4:1:0 sub-sampling
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a YUV format with 4:1:0
+ * sub-sampling.
+ */
+static inline bool
+drm_format_info_is_yuv_sampling_410(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->hsub == 4 && info->vsub == 4;
+}
+
+/**
+ * drm_format_info_is_yuv_sampling_411 - check that the format info matches a
+ * YUV format with 4:1:1 sub-sampling
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a YUV format with 4:1:1
+ * sub-sampling.
+ */
+static inline bool
+drm_format_info_is_yuv_sampling_411(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->hsub == 4 && info->vsub == 1;
+}
+
+/**
+ * drm_format_info_is_yuv_sampling_420 - check that the format info matches a
+ * YUV format with 4:2:0 sub-sampling
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a YUV format with 4:2:0
+ * sub-sampling.
+ */
+static inline bool
+drm_format_info_is_yuv_sampling_420(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->hsub == 2 && info->vsub == 2;
+}
+
+/**
+ * drm_format_info_is_yuv_sampling_422 - check that the format info matches a
+ * YUV format with 4:2:2 sub-sampling
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a YUV format with 4:2:2
+ * sub-sampling.
+ */
+static inline bool
+drm_format_info_is_yuv_sampling_422(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->hsub == 2 && info->vsub == 1;
+}
+
+/**
+ * drm_format_info_is_yuv_sampling_444 - check that the format info matches a
+ * YUV format with 4:4:4 sub-sampling
+ * @info: format info
+ *
+ * Returns:
+ * A boolean indicating whether the format info matches a YUV format with 4:4:4
+ * sub-sampling.
+ */
+static inline bool
+drm_format_info_is_yuv_sampling_444(const struct drm_format_info *info)
+{
+ return info->is_yuv && info->hsub == 1 && info->vsub == 1;
+}
+
+/**
+ * drm_format_info_plane_width - width of the plane given the first plane
+ * @info: pixel format info
+ * @width: width of the first plane
+ * @plane: plane index
+ *
+ * Returns:
+ * The width of @plane, given that the width of the first plane is @width.
+ */
+static inline
+int drm_format_info_plane_width(const struct drm_format_info *info, int width,
+ int plane)
+{
+ if (!info || plane >= info->num_planes)
+ return 0;
+
+ if (plane == 0)
+ return width;
+
+ return width / info->hsub;
+}
+
+/**
+ * drm_format_info_plane_height - height of the plane given the first plane
+ * @info: pixel format info
+ * @height: height of the first plane
+ * @plane: plane index
+ *
+ * Returns:
+ * The height of @plane, given that the height of the first plane is @height.
+ */
+static inline
+int drm_format_info_plane_height(const struct drm_format_info *info, int height,
+ int plane)
+{
+ if (!info || plane >= info->num_planes)
+ return 0;
+
+ if (plane == 0)
+ return height;
+
+ return height / info->vsub;
+}
+
const struct drm_format_info *__drm_format_info(u32 format);
const struct drm_format_info *drm_format_info(u32 format);
const struct drm_format_info *
drm_get_format_info(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd);
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
-int drm_format_num_planes(uint32_t format);
-int drm_format_plane_cpp(uint32_t format, int plane);
-int drm_format_horz_chroma_subsampling(uint32_t format);
-int drm_format_vert_chroma_subsampling(uint32_t format);
-int drm_format_plane_width(int width, uint32_t format, int plane);
-int drm_format_plane_height(int height, uint32_t format, int plane);
+uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
+ uint32_t bpp, uint32_t depth);
+unsigned int drm_format_info_block_width(const struct drm_format_info *info,
+ int plane);
+unsigned int drm_format_info_block_height(const struct drm_format_info *info,
+ int plane);
+uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
+ int plane, unsigned int buffer_width);
const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf);
#endif /* __DRM_FOURCC_H__ */
--
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