From 0a2486f85e0cfa6439116abb9078ab888a619746 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 8 Jul 2022 20:20:52 +0200 Subject: drm/gem-fb-helper: Use actual bpp for size calculations The AFBC helpers derive the number of bits per pixel from the deprecated drm_format_info.cpp[] field, which does not take into account block sizes. Fix this by using the actual number of bits per pixel instead. Signed-off-by: Geert Uytterhoeven Reviewed-by: Javier Martinez Canillas Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/b1d938d903157627c4ac101df92a1f3bf8ebe83d.1657294931.git.geert@linux-m68k.org --- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'drivers/gpu/drm/drm_gem_framebuffer_helper.c') diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c index 61339a9cd010..880a4975507f 100644 --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c @@ -490,6 +490,8 @@ void drm_gem_fb_end_cpu_access(struct drm_framebuffer *fb, enum dma_data_directi } EXPORT_SYMBOL(drm_gem_fb_end_cpu_access); +// TODO Drop this function and replace by drm_format_info_bpp() once all +// DRM_FORMAT_* provide proper block info in drivers/gpu/drm/drm_fourcc.c static __u32 drm_gem_afbc_get_bpp(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd) { @@ -497,11 +499,6 @@ static __u32 drm_gem_afbc_get_bpp(struct drm_device *dev, info = drm_get_format_info(dev, mode_cmd); - /* use whatever a driver has set */ - if (info->cpp[0]) - return info->cpp[0] * 8; - - /* guess otherwise */ switch (info->format) { case DRM_FORMAT_YUV420_8BIT: return 12; @@ -510,11 +507,8 @@ static __u32 drm_gem_afbc_get_bpp(struct drm_device *dev, case DRM_FORMAT_VUY101010: return 30; default: - break; + return drm_format_info_bpp(info, 0); } - - /* all attempts failed */ - return 0; } static int drm_gem_afbc_min_size(struct drm_device *dev, -- cgit v1.2.3