diff options
Diffstat (limited to 'drivers/gpu/drm/drm_framebuffer.c')
| -rw-r--r-- | drivers/gpu/drm/drm_framebuffer.c | 53 |
1 files changed, 50 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index cbf0c893f426..94ddab41f24f 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -432,8 +432,8 @@ int drm_mode_getfb(struct drm_device *dev, r->height = fb->height; r->width = fb->width; - r->depth = fb->depth; - r->bpp = fb->bits_per_pixel; + r->depth = fb->format->depth; + r->bpp = fb->format->cpp[0] * 8; r->pitch = fb->pitches[0]; if (fb->funcs->create_handle) { if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) || @@ -631,8 +631,11 @@ int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, { int ret; + if (WARN_ON_ONCE(fb->dev != dev || !fb->format)) + return -EINVAL; + INIT_LIST_HEAD(&fb->filp_head); - fb->dev = dev; + fb->funcs = funcs; ret = drm_mode_object_get_reg(dev, &fb->base, DRM_MODE_OBJECT_FB, @@ -790,3 +793,47 @@ void drm_framebuffer_remove(struct drm_framebuffer *fb) drm_framebuffer_unreference(fb); } EXPORT_SYMBOL(drm_framebuffer_remove); + +/** + * drm_framebuffer_plane_width - width of the plane given the first plane + * @width: width of the first plane + * @fb: the framebuffer + * @plane: plane index + * + * Returns: + * The width of @plane, given that the width of the first plane is @width. + */ +int drm_framebuffer_plane_width(int width, + const struct drm_framebuffer *fb, int plane) +{ + if (plane >= fb->format->num_planes) + return 0; + + if (plane == 0) + return width; + + return width / fb->format->hsub; +} +EXPORT_SYMBOL(drm_framebuffer_plane_width); + +/** + * drm_framebuffer_plane_height - height of the plane given the first plane + * @height: height of the first plane + * @fb: the framebuffer + * @plane: plane index + * + * Returns: + * The height of @plane, given that the height of the first plane is @height. + */ +int drm_framebuffer_plane_height(int height, + const struct drm_framebuffer *fb, int plane) +{ + if (plane >= fb->format->num_planes) + return 0; + + if (plane == 0) + return height; + + return height / fb->format->vsub; +} +EXPORT_SYMBOL(drm_framebuffer_plane_height); |