drm/omap: Pass along the format info from .fb_create() to drm_helper_mode_fill_fb_struct()

Plumb the format info from .fb_create() all the way to
drm_helper_mode_fill_fb_struct() to avoid the redundant
lookup.

For the fbdev case a manual drm_get_format_info() lookup
is needed.

The patch is based on the driver parts of the patchset at Link:
below, which missed converting the omap driver.

Due to the absence of this change in the patchset at Link:, after the
Fixed: commit below, omap_framebuffer_init() ->
drm_helper_mode_fill_fb_struct() set drm_framebuffer::format incorrectly
to NULL, which lead to the !fb->format WARN() in drm_framebuffer_init()
and causing framebuffer creation to fail. This patch fixes both of these
issues.

v2: Amend the commit log mentioning the functional issues the patch
    fixes. (Tomi)

Cc: Ville Syrjälä <[email protected]>
Cc: Tomi Valkeinen <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Maxime Ripard <[email protected]>
Fixes: 41ab92d35ccd ("drm: Make passing of format info to drm_helper_mode_fill_fb_struct() mandatory")
Reported-by: Mark Brown <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]
Link: https://lore.kernel.org/all/[email protected]
Tested-by: Mark Brown <[email protected]>
Tested-by: Linux Kernel Functional Testing <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Reviewed-by: Tomi Valkeinen <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_fb.h b/drivers/gpu/drm/omapdrm/omap_fb.h
index 0873f953cf1d..e6010302a22b 100644
--- a/drivers/gpu/drm/omapdrm/omap_fb.h
+++ b/drivers/gpu/drm/omapdrm/omap_fb.h
@@ -13,6 +13,7 @@ struct drm_connector;
 struct drm_device;
 struct drm_file;
 struct drm_framebuffer;
+struct drm_format_info;
 struct drm_gem_object;
 struct drm_mode_fb_cmd2;
 struct drm_plane_state;
@@ -23,6 +24,7 @@ struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
 		struct drm_file *file, const struct drm_format_info *info,
 		const struct drm_mode_fb_cmd2 *mode_cmd);
 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
+		const struct drm_format_info *info,
 		const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
 int omap_framebuffer_pin(struct drm_framebuffer *fb);
 void omap_framebuffer_unpin(struct drm_framebuffer *fb);