Some hardware has pitch alignment requirements, but there is no way to set the pitch for CMA fbdev other than completely replacing drm_fbdev_cma_create. Add the pitch and allow drivers to adjust it before calling drm_fbdev_cma_create.
Signed-off-by: Rob Herring robh@kernel.org --- drivers/gpu/drm/drm_fb_cma_helper.c | 3 ++- include/drm/drm_fb_helper.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c index f7751a2..b393e5c 100644 --- a/drivers/gpu/drm/drm_fb_cma_helper.c +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -266,7 +266,8 @@ int drm_fbdev_cma_create(struct drm_fb_helper *helper,
mode_cmd.width = sizes->surface_width; mode_cmd.height = sizes->surface_height; - mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel; + mode_cmd.pitches[0] = sizes->surface_pitch ? + sizes->surface_pitch : sizes->surface_width * bytes_per_pixel; mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 0dfd94def..8072c4f 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -70,6 +70,7 @@ struct drm_fb_helper_surface_size { u32 surface_height; u32 surface_bpp; u32 surface_depth; + u32 surface_pitch; };
/**