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drm: add cap bit to denote if dumb ioctl is available or not.

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This allows libkms to make an easier decision.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2011-03-04 14:50:28 +10:00
parent 9f35421e09
commit e73f88af66
2 changed files with 10 additions and 0 deletions
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8
drivers/gpu/drm/drm_ioctl.c
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@ -275,6 +275,14 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
struct drm_get_cap *req = data;
req->value = 0;
switch (req->capability) {
case DRM_CAP_DUMB_BUFFER:
if (dev->driver->dumb_create)
req->value = 1;
break;
default:
return -EINVAL;
}
return 0;
}

2
include/drm/drm.h
View file

@ -752,6 +752,8 @@ struct drm_event_vblank {
__u32 reserved;
};
#define DRM_CAP_DUMB_BUFFER 0x1
/* typedef area */
#ifndef __KERNEL__
typedef struct drm_clip_rect drm_clip_rect_t;