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drm: Document device unplug infrastructure

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While at it, also ocd and give them a consistent drm_dev_ prefix, like
the other device instance functionality. Plus move the functions into
the right places.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170802115604.12734-3-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter
2017-08-02 13:56:02 +02:00
parent e4672e55d6
commit c07dcd61a0
12 changed files with 51 additions and 28 deletions
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22
include/drm/drm_drv.h
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@@ -30,7 +30,8 @@
#include <linux/list.h>
#include <linux/irqreturn.h>
struct drm_device;
#include <drm/drm_device.h>
struct drm_file;
struct drm_gem_object;
struct drm_master;
@@ -613,7 +614,24 @@ void drm_dev_unregister(struct drm_device *dev);
void drm_dev_ref(struct drm_device *dev);
void drm_dev_unref(struct drm_device *dev);
void drm_put_dev(struct drm_device *dev);
void drm_unplug_dev(struct drm_device *dev);
void drm_dev_unplug(struct drm_device *dev);
/**
* drm_dev_is_unplugged - is a DRM device unplugged
* @dev: DRM device
*
* This function can be called to check whether a hotpluggable is unplugged.
* Unplugging itself is singalled through drm_dev_unplug(). If a device is
* unplugged, these two functions guarantee that any store before calling
* drm_dev_unplug() is visible to callers of this function after it completes
*/
static inline int drm_dev_is_unplugged(struct drm_device *dev)
{
int ret = atomic_read(&dev->unplugged);
smp_rmb();
return ret;
}
int drm_dev_set_unique(struct drm_device *dev, const char *name);