diff options
| author | Alexey Brodkin <Alexey.Brodkin@synopsys.com> | 2016-04-19 12:24:51 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-20 11:29:22 (GMT) |
| commit | 54d2c2da0946368b96b63e6daed7920f3681243e (patch) | |
| tree | ae1653958aee79e898bbe3bfda8bd94cf2c978a8 /drivers/gpu | |
| parent | 644a80508f918e488aad70814b65b7007438ef4c (diff) | |
| download | linux-54d2c2da0946368b96b63e6daed7920f3681243e.tar.xz | |
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: Alexey 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: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461068693-11260-2-git-send-email-abrodkin@synopsys.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 40 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 6 |
2 files changed, 45 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index f7fe9e1..ee549a3 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1068,6 +1068,46 @@ 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 * diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 167c8d3..2c9a2b6 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -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! * |