drm/bridge: introduce bridge detaching mechanism
authorAndrea Merello <andrea.merello@gmail.com>
Thu, 25 Aug 2016 09:04:32 +0000 (11:04 +0200)
committerArchit Taneja <architt@codeaurora.org>
Mon, 29 Aug 2016 03:43:00 +0000 (09:13 +0530)
commitcf3bef95e1014233cb1ce89da8cfa5cd22e7412c
treeaa79bd6123a9669499178ee470ec3bd333b486bd
parent6dcf0de7ef10244b17442f47956a1d9fabe2abe1
drm/bridge: introduce bridge detaching mechanism

Up to now, once a bridge has been attached to a DRM device, it cannot
be undone.

In particular you couldn't rmmod/insmod a DRM driver that uses a bridge,
because the bridge would remain bound to the first (dead) driver instance.

This patch fixes this by introducing drm_encoder_detach() and a ->detach
callback in drm_bridge_funcs for the bridge to be notified about detaches.

It's DRM/KMS driver responsibility to call drm_encoder_detach().

While adding the bridge detach callback, with its kerneldoc, I also added
kerneldoc for attach callback.

Few other kerneldocs fixes around there are included.

Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Suggested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1472115874-6219-1-git-send-email-andrea.merello@gmail.com
drivers/gpu/drm/drm_bridge.c
include/drm/drm_crtc.h