diff options
Diffstat (limited to 'drivers/gpu/drm/drm_fourcc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fourcc.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index 23d4b82ec17c..523ed916a1c0 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -102,15 +102,11 @@ char *drm_get_format_name(uint32_t format) } EXPORT_SYMBOL(drm_get_format_name); -/** - * drm_format_info - query information for a given format - * @format: pixel format (DRM_FORMAT_*) - * - * Returns: - * The instance of struct drm_format_info that describes the pixel format, or - * NULL if the format is unsupported. +/* + * Internal function to query information for a given format. See + * drm_format_info() for the public API. */ -const struct drm_format_info *drm_format_info(u32 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 }, @@ -184,6 +180,26 @@ const struct drm_format_info *drm_format_info(u32 format) return NULL; } + +/** + * drm_format_info - query information for a given format + * @format: pixel format (DRM_FORMAT_*) + * + * The caller should only pass a supported pixel format to this function. + * Unsupported pixel formats will generate a warning in the kernel log. + * + * Returns: + * The instance of struct drm_format_info that describes the pixel format, or + * NULL if the format is unsupported. + */ +const struct drm_format_info *drm_format_info(u32 format) +{ + const struct drm_format_info *info; + + info = __drm_format_info(format); + WARN_ON(!info); + return info; +} EXPORT_SYMBOL(drm_format_info); /** |