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drm: bridge: Detach bridge from encoder at encoder cleanup time

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Most drivers that use bridges forgot to detach them at cleanup time.
Instead of fixing them one by one, detach the bridge in the core
drm_encoder_cleanup() function.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1481709550-29226-5-git-send-email-laurent.pinchart+renesas@ideasonboard.com
This commit is contained in:
Laurent Pinchart 2016-11-28 18:32:05 +02:00 committed by Archit Taneja
parent 3bb80f2495
commit 4a878c03d5
8 changed files with 8 additions and 35 deletions
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13
drivers/gpu/drm/drm_bridge.c
View file

@ -28,6 +28,8 @@
#include <drm/drm_bridge.h>
#include <drm/drm_encoder.h>
#include "drm_crtc_internal.h"
/**
* DOC: overview
*
@ -145,16 +147,6 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
}
EXPORT_SYMBOL(drm_bridge_attach);
/**
* drm_bridge_detach - deassociate given bridge from its DRM device
*
* @bridge: bridge control structure
*
* Called by a kms driver to unlink the given bridge from its DRM device.
*
* Note that tearing down links between the bridge and our encoder/bridge
* objects needs to be handled by the kms driver itself.
*/
void drm_bridge_detach(struct drm_bridge *bridge)
{
if (WARN_ON(!bridge))
@ -168,7 +160,6 @@ void drm_bridge_detach(struct drm_bridge *bridge)
bridge->dev = NULL;
}
EXPORT_SYMBOL(drm_bridge_detach);
/**
* DOC: bridge callbacks

3
drivers/gpu/drm/drm_crtc_internal.h
View file

@ -186,6 +186,9 @@ void drm_plane_unregister_all(struct drm_device *dev);
int drm_plane_check_pixel_format(const struct drm_plane *plane,
u32 format);
/* drm_bridge.c */
void drm_bridge_detach(struct drm_bridge *bridge);
/* IOCTL */
int drm_mode_getplane_res(struct drm_device *dev, void *data,
struct drm_file *file_priv);

3
drivers/gpu/drm/drm_encoder.c
View file

@ -159,6 +159,9 @@ void drm_encoder_cleanup(struct drm_encoder *encoder)
* the indices on the drm_encoder after us in the encoder_list.
*/
if (encoder->bridge)
drm_bridge_detach(encoder->bridge);
drm_mode_object_unregister(dev, &encoder->base);
kfree(encoder->name);
list_del(&encoder->head);

17
drivers/gpu/drm/drm_simple_kms_helper.c
View file

@ -186,23 +186,6 @@ int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe,
}
EXPORT_SYMBOL(drm_simple_display_pipe_attach_bridge);
/**
* drm_simple_display_pipe_detach_bridge - Detach the bridge from the display pipe
* @pipe: simple display pipe object
*
* Detaches the drm bridge previously attached with
* drm_simple_display_pipe_attach_bridge()
*/
void drm_simple_display_pipe_detach_bridge(struct drm_simple_display_pipe *pipe)
{
if (WARN_ON(!pipe->encoder.bridge))
return;
drm_bridge_detach(pipe->encoder.bridge);
pipe->encoder.bridge = NULL;
}
EXPORT_SYMBOL(drm_simple_display_pipe_detach_bridge);
/**
* drm_simple_display_pipe_init - Initialize a simple display pipeline
* @dev: DRM device

2
drivers/gpu/drm/imx/imx-ldb.c
View file

@ -736,8 +736,6 @@ static void imx_ldb_unbind(struct device *dev, struct device *master,
for (i = 0; i < 2; i++) {
struct imx_ldb_channel *channel = &imx_ldb->channel[i];
if (channel->bridge)
drm_bridge_detach(channel->bridge);
if (channel->panel)
drm_panel_detach(channel->panel);

2
drivers/gpu/drm/imx/parallel-display.c
View file

@ -284,8 +284,6 @@ static void imx_pd_unbind(struct device *dev, struct device *master,
{
struct imx_parallel_display *imxpd = dev_get_drvdata(dev);
if (imxpd->bridge)
drm_bridge_detach(imxpd->bridge);
if (imxpd->panel)
drm_panel_detach(imxpd->panel);

1
include/drm/drm_bridge.h
View file

@ -203,7 +203,6 @@ void drm_bridge_remove(struct drm_bridge *bridge);
struct drm_bridge *of_drm_find_bridge(struct device_node *np);
int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
struct drm_bridge *previous);
void drm_bridge_detach(struct drm_bridge *bridge);
bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
const struct drm_display_mode *mode,

2
include/drm/drm_simple_kms_helper.h
View file

@ -114,8 +114,6 @@ struct drm_simple_display_pipe {
int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe,
struct drm_bridge *bridge);
void drm_simple_display_pipe_detach_bridge(struct drm_simple_display_pipe *pipe);
int drm_simple_display_pipe_init(struct drm_device *dev,
struct drm_simple_display_pipe *pipe,
const struct drm_simple_display_pipe_funcs *funcs,