Commit 54d2c2da authored by Alexey Brodkin's avatar Alexey Brodkin Committed by Daniel Vetter
Browse files

drm: Introduce drm_connector_register_all() helper 



As a pair to already existing drm_connector_unregister_all() we're adding
generic implementation of what is already done in some drivers.

Once this helper is implemented we'll be ready to switch existing
driver-specific implementations with the generic one.

Signed-off-by: default avatarAlexey Brodkin <abrodkin@synopsys.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461068693-11260-2-git-send-email-abrodkin@synopsys.com
parent 644a8050

drivers/gpu/drm/drm_crtc.c

+40 −0
Original line number Diff line number Diff line
@@ -1067,6 +1067,46 @@ void drm_connector_unregister(struct drm_connector *connector) 
}

EXPORT_SYMBOL(drm_connector_unregister);



/**

 * drm_connector_register_all - register all connectors

 * @dev: drm device

 *

 * This function registers all connectors in sysfs and other places so that

 * userspace can start to access them. Drivers can call it after calling

 * drm_dev_register() to complete the device registration, if they don't call

 * drm_connector_register() on each connector individually.

 *

 * When a device is unplugged and should be removed from userspace access,

 * call drm_connector_unregister_all(), which is the inverse of this

 * function.

 *

 * Returns:

 * Zero on success, error code on failure.

 */

int drm_connector_register_all(struct drm_device *dev)

{

	struct drm_connector *connector;

	int ret;



	mutex_lock(&dev->mode_config.mutex);



	drm_for_each_connector(connector, dev) {

		ret = drm_connector_register(connector);

		if (ret)

			goto err;

	}



	mutex_unlock(&dev->mode_config.mutex);



	return 0;



err:

	mutex_unlock(&dev->mode_config.mutex);

	drm_connector_unregister_all(dev);

	return ret;

}

EXPORT_SYMBOL(drm_connector_register_all);



/**

 * drm_connector_unregister_all - unregister connector userspace interfaces

 * @dev: drm device

drivers/gpu/drm/drm_drv.c

+5 −1
Original line number Diff line number Diff line
@@ -715,7 +715,11 @@ EXPORT_SYMBOL(drm_dev_unref); 
 *

 * Register the DRM device @dev with the system, advertise device to user-space

 * and start normal device operation. @dev must be allocated via drm_dev_alloc()

 * previously.

 * previously. Right after drm_dev_register() the driver should call

 * drm_connector_register_all() to register all connectors in sysfs. This is

 * a separate call for backward compatibility with drivers still using

 * the deprecated ->load() callback, where connectors are registered from within

 * the ->load() callback.

 *

 * Never call this twice on any device!

 *

include/drm/drm_crtc.h

+2 −1
Original line number Diff line number Diff line
@@ -2249,7 +2249,8 @@ static inline unsigned drm_connector_index(struct drm_connector *connector) 
	return connector->connector_id;

}



/* helper to unregister all connectors from sysfs for device */

/* helpers to {un}register all connectors from sysfs for device */

extern int drm_connector_register_all(struct drm_device *dev);

extern void drm_connector_unregister_all(struct drm_device *dev);



extern int drm_bridge_add(struct drm_bridge *bridge);

CRA Git | Maintained and supported by SUSTech CRA and CCSE