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path: root/drivers/gpu/drm/drm_fourcc.c
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Diffstat (limited to 'drivers/gpu/drm/drm_fourcc.c')
-rw-r--r--drivers/gpu/drm/drm_fourcc.c150
1 files changed, 140 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index 07741b678798..e0d533611040 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -36,13 +36,27 @@
* @depth: bit depth per pixel
*
* Computes a drm fourcc pixel format code for the given @bpp/@depth values.
- * Useful in fbdev emulation code, since that deals in those values.
*/
uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
{
uint32_t fmt = DRM_FORMAT_INVALID;
switch (bpp) {
+ case 1:
+ if (depth == 1)
+ fmt = DRM_FORMAT_C1;
+ break;
+
+ case 2:
+ if (depth == 2)
+ fmt = DRM_FORMAT_C2;
+ break;
+
+ case 4:
+ if (depth == 4)
+ fmt = DRM_FORMAT_C4;
+ break;
+
case 8:
if (depth == 8)
fmt = DRM_FORMAT_C8;
@@ -125,6 +139,35 @@ uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
}
EXPORT_SYMBOL(drm_driver_legacy_fb_format);
+/**
+ * drm_driver_color_mode_format - Compute DRM 4CC code from color mode
+ * @dev: DRM device
+ * @color_mode: command-line color mode
+ *
+ * Computes a DRM 4CC pixel format code for the given color mode using
+ * drm_driver_color_mode(). The color mode is in the format used and the
+ * kernel command line. It specifies the number of bits per pixel
+ * and color depth in a single value.
+ *
+ * Useful in fbdev emulation code, since that deals in those values. The
+ * helper does not consider YUV or other complicated formats. This means
+ * only legacy formats are supported (fmt->depth is a legacy field), but
+ * the framebuffer emulation can only deal with such formats, specifically
+ * RGB/BGA formats.
+ */
+uint32_t drm_driver_color_mode_format(struct drm_device *dev, unsigned int color_mode)
+{
+ switch (color_mode) {
+ case 15:
+ return drm_driver_legacy_fb_format(dev, 16, 15);
+ case 32:
+ return drm_driver_legacy_fb_format(dev, 32, 24);
+ default:
+ return drm_driver_legacy_fb_format(dev, color_mode, color_mode);
+ }
+}
+EXPORT_SYMBOL(drm_driver_color_mode_format);
+
/*
* Internal function to query information for a given format. See
* drm_format_info() for the public API.
@@ -132,7 +175,26 @@ EXPORT_SYMBOL(drm_driver_legacy_fb_format);
const struct drm_format_info *__drm_format_info(u32 format)
{
static const struct drm_format_info formats[] = {
- { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_C1, .depth = 1, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
+ { .format = DRM_FORMAT_C2, .depth = 2, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
+ { .format = DRM_FORMAT_C4, .depth = 4, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
+ { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
+ { .format = DRM_FORMAT_D1, .depth = 1, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_D2, .depth = 2, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_D4, .depth = 4, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_D8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_R1, .depth = 1, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_R2, .depth = 2, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_R4, .depth = 4, .num_planes = 1,
+ .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
{ .format = DRM_FORMAT_R8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
{ .format = DRM_FORMAT_R10, .depth = 10, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
{ .format = DRM_FORMAT_R12, .depth = 12, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
@@ -156,6 +218,10 @@ const struct drm_format_info *__drm_format_info(u32 format)
{ .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
{ .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
{ .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
+#ifdef __BIG_ENDIAN
+ { .format = DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
+ { .format = DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
+#endif
{ .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
{ .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
@@ -172,6 +238,14 @@ const struct drm_format_info *__drm_format_info(u32 format)
{ .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
{ .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
{ .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
+ { .format = DRM_FORMAT_RGB161616, .depth = 0,
+ .num_planes = 1, .char_per_block = { 6, 0, 0 },
+ .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 },
+ .hsub = 1, .vsub = 1, .has_alpha = false },
+ { .format = DRM_FORMAT_BGR161616, .depth = 0,
+ .num_planes = 1, .char_per_block = { 6, 0, 0 },
+ .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 },
+ .hsub = 1, .vsub = 1, .has_alpha = false },
{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
{ .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
@@ -261,17 +335,52 @@ const struct drm_format_info *__drm_format_info(u32 format)
.num_planes = 2, .char_per_block = { 5, 5, 0 },
.block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
.vsub = 2, .is_yuv = true },
+ { .format = DRM_FORMAT_NV20, .depth = 0,
+ .num_planes = 2, .char_per_block = { 5, 5, 0 },
+ .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
+ .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_NV30, .depth = 0,
+ .num_planes = 2, .char_per_block = { 5, 5, 0 },
+ .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1,
+ .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_Q410, .depth = 0,
.num_planes = 3, .char_per_block = { 2, 2, 2 },
- .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
- .vsub = 0, .is_yuv = true },
+ .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1,
+ .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_Q401, .depth = 0,
.num_planes = 3, .char_per_block = { 2, 2, 2 },
- .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
- .vsub = 0, .is_yuv = true },
+ .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1,
+ .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2,
.char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },
.hsub = 2, .vsub = 2, .is_yuv = true},
+ { .format = DRM_FORMAT_S010, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true},
+ { .format = DRM_FORMAT_S210, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true},
+ { .format = DRM_FORMAT_S410, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, .is_yuv = true},
+ { .format = DRM_FORMAT_S012, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true},
+ { .format = DRM_FORMAT_S212, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true},
+ { .format = DRM_FORMAT_S412, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, .is_yuv = true},
+ { .format = DRM_FORMAT_S016, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true},
+ { .format = DRM_FORMAT_S216, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true},
+ { .format = DRM_FORMAT_S416, .depth = 0, .num_planes = 3,
+ .char_per_block = { 2, 2, 2 }, .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, .is_yuv = true},
};
unsigned int i;
@@ -308,7 +417,8 @@ EXPORT_SYMBOL(drm_format_info);
/**
* drm_get_format_info - query information for a given framebuffer configuration
* @dev: DRM device
- * @mode_cmd: metadata from the userspace fb creation request
+ * @pixel_format: pixel format (DRM_FORMAT_*)
+ * @modifier: modifier
*
* Returns:
* The instance of struct drm_format_info that describes the pixel format, or
@@ -316,15 +426,16 @@ EXPORT_SYMBOL(drm_format_info);
*/
const struct drm_format_info *
drm_get_format_info(struct drm_device *dev,
- const struct drm_mode_fb_cmd2 *mode_cmd)
+ u32 pixel_format, u64 modifier)
{
const struct drm_format_info *info = NULL;
if (dev->mode_config.funcs->get_format_info)
- info = dev->mode_config.funcs->get_format_info(mode_cmd);
+ info = dev->mode_config.funcs->get_format_info(pixel_format,
+ modifier);
if (!info)
- info = drm_format_info(mode_cmd->pixel_format);
+ info = drm_format_info(pixel_format);
return info;
}
@@ -371,6 +482,25 @@ unsigned int drm_format_info_block_height(const struct drm_format_info *info,
EXPORT_SYMBOL(drm_format_info_block_height);
/**
+ * drm_format_info_bpp - number of bits per pixel
+ * @info: pixel format info
+ * @plane: plane index
+ *
+ * Returns:
+ * The actual number of bits per pixel, depending on the plane index.
+ */
+unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane)
+{
+ if (!info || plane < 0 || plane >= info->num_planes)
+ return 0;
+
+ return info->char_per_block[plane] * 8 /
+ (drm_format_info_block_width(info, plane) *
+ drm_format_info_block_height(info, plane));
+}
+EXPORT_SYMBOL(drm_format_info_bpp);
+
+/**
* drm_format_info_min_pitch - computes the minimum required pitch in bytes
* @info: pixel format info
* @plane: plane index
generated by cgit (git 2.34.1) at 2025-12-25 11:26:39 +0000