[PATCH 19/32] drm: Store a pointer to drm_format_info under drm_framebuffer

[ville.syrj...@linux.intel.com]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

To avoid having to look up the format information struct every time,
let's just store a pointer to it under drm_framebuffer.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_framebuffer.c    | 4 +++-
 drivers/gpu/drm/drm_modeset_helper.c | 1 +
 include/drm/drm_framebuffer.h        | 4 ++++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_framebuffer.c 
b/drivers/gpu/drm/drm_framebuffer.c
index 527220c08f9b..47478678d609 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -632,8 +632,10 @@ int drm_framebuffer_init(struct drm_device *dev, struct 
drm_framebuffer *fb,
        int ret;

        INIT_LIST_HEAD(&fb->filp_head);
-       if (WARN_ON_ONCE(fb->dev != dev))
+       if (WARN_ON_ONCE(fb->dev != dev)) {
                fb->dev = dev;
+               fb->format = drm_format_info(fb->pixel_format);
+       }
        fb->funcs = funcs;

        ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB,
diff --git a/drivers/gpu/drm/drm_modeset_helper.c 
b/drivers/gpu/drm/drm_modeset_helper.c
index 57a319e3f780..1aa5e3bcc8a1 100644
--- a/drivers/gpu/drm/drm_modeset_helper.c
+++ b/drivers/gpu/drm/drm_modeset_helper.c
@@ -91,6 +91,7 @@ void drm_helper_mode_fill_fb_struct(struct drm_device *dev,
        }

        fb->dev = dev;
+       fb->format = info;
        fb->width = mode_cmd->width;
        fb->height = mode_cmd->height;
        for (i = 0; i < 4; i++) {
diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h
index b3141a0e609b..741b3a994d1f 100644
--- a/include/drm/drm_framebuffer.h
+++ b/include/drm/drm_framebuffer.h
@@ -122,6 +122,10 @@ struct drm_framebuffer {
         */
        struct drm_mode_object base;
        /**
+        * @format: framebuffer format information
+        */
+       const struct drm_format_info *format;
+       /**
         * @funcs: framebuffer vfunc table
         */
        const struct drm_framebuffer_funcs *funcs;
-- 
2.7.4