diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 24 |
1 files changed, 1 insertions, 23 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index b79f484e9bd2..18a0a4ce00f6 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -388,31 +388,9 @@ static int ast_get_dram_info(struct drm_device *dev) return 0; } -enum drm_mode_status ast_mode_config_mode_valid(struct drm_device *dev, - const struct drm_display_mode *mode) -{ - static const unsigned long max_bpp = 4; /* DRM_FORMAT_XRGBA8888 */ - - struct ast_private *ast = dev->dev_private; - unsigned long fbsize, fbpages, max_fbpages; - - /* To support double buffering, a framebuffer may not - * consume more than half of the available VRAM. - */ - max_fbpages = (ast->vram_size / 2) >> PAGE_SHIFT; - - fbsize = mode->hdisplay * mode->vdisplay * max_bpp; - fbpages = DIV_ROUND_UP(fbsize, PAGE_SIZE); - - if (fbpages > max_fbpages) - return MODE_MEM; - - return MODE_OK; -} - static const struct drm_mode_config_funcs ast_mode_funcs = { .fb_create = drm_gem_fb_create, - .mode_valid = ast_mode_config_mode_valid, + .mode_valid = drm_vram_helper_mode_valid, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; |