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drm/mode: Add user blob-creation ioctl

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Add an ioctl which allows users to create blob properties from supplied
data. Currently this only supports modes, creating a drm_display_mode from
the userspace drm_mode_modeinfo.

v2: Removed size/type checks.
    Rebased on new patches to allow error propagation from create_blob,
    as well as avoiding double-allocation.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@intel.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Stone
2015-05-22 13:34:51 +01:00
committed by Daniel Vetter
parent 10e8cb7e79
commit e2f5d2ea47
7 changed files with 176 additions and 5 deletions
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5
drivers/gpu/drm/drm_fops.c
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@@ -167,6 +167,7 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor)
INIT_LIST_HEAD(&priv->lhead);
INIT_LIST_HEAD(&priv->fbs);
mutex_init(&priv->fbs_lock);
INIT_LIST_HEAD(&priv->blobs);
INIT_LIST_HEAD(&priv->event_list);
init_waitqueue_head(&priv->event_wait);
priv->event_space = 4096; /* set aside 4k for event buffer */
@@ -405,8 +406,10 @@ int drm_release(struct inode *inode, struct file *filp)
drm_events_release(file_priv);
if (drm_core_check_feature(dev, DRIVER_MODESET))
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
drm_fb_release(file_priv);
drm_property_destroy_user_blobs(dev, file_priv);
}
if (drm_core_check_feature(dev, DRIVER_GEM))
drm_gem_release(dev, file_priv);