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@xxxxxxxxxx>
---
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;
};
/**
--
2.1.4
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