diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-04-04 08:51:36 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-06-21 15:35:51 -0300 |
| commit | eb569cf9db804e6ba34b3a1812415e59d5e43d1a (patch) | |
| tree | 119054daf7f86e7b76fb64d6c8406cf76f66893d | |
| parent | f7f6ce2d09c86bd80ee11bd654a1ac1e8f5dfe13 (diff) | |
| download | linux-eb569cf9db804e6ba34b3a1812415e59d5e43d1a.tar.bz2 | |
[media] soc-camera: add host clock callbacks to start and stop the master clock
Currently soc-camera uses a single camera host callback to activate the
interface master clock and to configure the interface for a specific
client. However, during probing we might not have the information about
a client, we just need to activate the clock. Add new camera host driver
callbacks to only start and stop the clock without and client-specific
configuration.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/platform/soc_camera/soc_camera.c | 19 | ||||
| -rw-r--r-- | include/media/soc_camera.h | 2 |
2 files changed, 19 insertions, 2 deletions
diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c index 1e831009f914..3cc086036070 100644 --- a/drivers/media/platform/soc_camera/soc_camera.c +++ b/drivers/media/platform/soc_camera/soc_camera.c @@ -512,10 +512,23 @@ static int soc_camera_add_device(struct soc_camera_device *icd) if (ici->icd) return -EBUSY; + if (ici->ops->clock_start) { + ret = ici->ops->clock_start(ici); + if (ret < 0) + return ret; + } + ret = ici->ops->add(icd); - if (!ret) - ici->icd = icd; + if (ret < 0) + goto eadd; + + ici->icd = icd; + return 0; + +eadd: + if (ici->ops->clock_stop) + ici->ops->clock_stop(ici); return ret; } @@ -527,6 +540,8 @@ static void soc_camera_remove_device(struct soc_camera_device *icd) return; ici->ops->remove(icd); + if (ici->ops->clock_stop) + ici->ops->clock_stop(ici); ici->icd = NULL; } diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h index db23a8f0c26b..dfa24df960df 100644 --- a/include/media/soc_camera.h +++ b/include/media/soc_camera.h @@ -74,6 +74,8 @@ struct soc_camera_host_ops { struct module *owner; int (*add)(struct soc_camera_device *); void (*remove)(struct soc_camera_device *); + int (*clock_start)(struct soc_camera_host *); + void (*clock_stop)(struct soc_camera_host *); /* * .get_formats() is called for each client device format, but * .put_formats() is only called once. Further, if any of the calls to |