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| author | Maxime Ripard | 2019-05-16 12:31:49 +0200 |
|---|---|---|
| committer | Maxime Ripard | 2019-05-20 13:33:46 +0200 |
| commit | 24c478ead0bf50a758e9dbecc7356e9eebf20271 (patch) | |
| tree | 98e211adb76be84c41021cddc20e40e718500f2e /include/drm/drm_fourcc.h | |
| parent | drm: Remove users of drm_format_(horz|vert)_chroma_subsampling (diff) | |
| download | kernel-qcow2-linux-24c478ead0bf50a758e9dbecc7356e9eebf20271.tar.gz kernel-qcow2-linux-24c478ead0bf50a758e9dbecc7356e9eebf20271.tar.xz kernel-qcow2-linux-24c478ead0bf50a758e9dbecc7356e9eebf20271.zip | |
drm/fourcc: Pass the format_info pointer to drm_format_plane_cpp
So far, the drm_format_plane_cpp function was operating on the format's
fourcc and was doing a lookup to retrieve the drm_format_info structure and
return the cpp.
However, this is inefficient since in most cases, we will have the
drm_format_info pointer already available so we shouldn't have to perform a
new lookup. Some drm_fourcc functions also already operate on the
drm_format_info pointer for that reason, so the API is quite inconsistent
there.
Let's follow the latter pattern and remove the extra lookup while being a
bit more consistent. In order to be extra consistent, also rename that
function to drm_format_info_plane_cpp and to a static function in the
header to match the current policy.
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/32aa13e53dbc98a90207fd290aa8e79f785fb11e.1558002671.git-series.maxime.ripard@bootlin.com
Diffstat (limited to 'include/drm/drm_fourcc.h')
| -rw-r--r-- | include/drm/drm_fourcc.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index eeec449d6c6a..6b5a82b31bc4 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -260,6 +260,23 @@ 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_cpp - determine the bytes per pixel value + * @format: pixel format info + * @plane: plane index + * + * Returns: + * The bytes per pixel value for the specified plane. + */ +static inline +int drm_format_info_plane_cpp(const struct drm_format_info *info, int plane) +{ + if (!info || plane >= info->num_planes) + return 0; + + return info->cpp[plane]; +} + 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 * @@ -268,7 +285,6 @@ drm_get_format_info(struct drm_device *dev, uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, uint32_t bpp, uint32_t depth); -int drm_format_plane_cpp(uint32_t format, int plane); int drm_format_plane_width(int width, uint32_t format, int plane); int drm_format_plane_height(int height, uint32_t format, int plane); unsigned int drm_format_info_block_width(const struct drm_format_info *info, |