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drm/cirrus: allow 32bpp framebuffers for cirrus drm

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This patch allows framebuffers for cirrus to be created with
32bpp pixel formats provided that they do not violate certain
restrictions of the cirrus hardware.

v2: Use pci resource length for vram size.

Signed-off-by: Zach Reizner <zachr@google.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Zach Reizner
2014-10-29 11:04:24 -07:00
committed by Dave Airlie
parent ebfdd6d5e8
commit 8975626ea3
3 changed files with 30 additions and 5 deletions
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5
drivers/gpu/drm/cirrus/cirrus_fbdev.c
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@@ -139,6 +139,7 @@ static int cirrusfb_create_object(struct cirrus_fbdev *afbdev,
struct drm_gem_object **gobj_p)
{
struct drm_device *dev = afbdev->helper.dev;
struct cirrus_device *cdev = dev->dev_private;
u32 bpp, depth;
u32 size;
struct drm_gem_object *gobj;
@@ -146,8 +147,10 @@ static int cirrusfb_create_object(struct cirrus_fbdev *afbdev,
int ret = 0;
drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
if (bpp > 24)
if (!cirrus_check_framebuffer(cdev, mode_cmd->width, mode_cmd->height,
bpp, mode_cmd->pitches[0]))
return -EINVAL;
size = mode_cmd->pitches[0] * mode_cmd->height;
ret = cirrus_gem_create(dev, size, true, &gobj);
if (ret)