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media: camss: csid: Add support for events triggered by user controls

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Changing a user control value can trigger an event to other
users. Add support for that.

Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Todor Tomov 2018-07-25 12:38:43 -04:00 committed by Mauro Carvalho Chehab
parent e1cf4b2f17
commit 988b3ae3e0
1 changed files with 5 additions and 1 deletions
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6
drivers/media/platform/qcom/camss/camss-csid.c
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@ -17,6 +17,7 @@
#include <linux/regulator/consumer.h> #include <linux/regulator/consumer.h>
#include <media/media-entity.h> #include <media/media-entity.h>
#include <media/v4l2-device.h> #include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-subdev.h> #include <media/v4l2-subdev.h>
#include "camss-csid.h" #include "camss-csid.h"
@ -1273,6 +1274,8 @@ static int csid_link_setup(struct media_entity *entity,
static const struct v4l2_subdev_core_ops csid_core_ops = { static const struct v4l2_subdev_core_ops csid_core_ops = {
.s_power = csid_set_power, .s_power = csid_set_power,
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
}; };
static const struct v4l2_subdev_video_ops csid_video_ops = { static const struct v4l2_subdev_video_ops csid_video_ops = {
@ -1318,7 +1321,8 @@ int msm_csid_register_entity(struct csid_device *csid,
v4l2_subdev_init(sd, &csid_v4l2_ops); v4l2_subdev_init(sd, &csid_v4l2_ops);
sd->internal_ops = &csid_v4l2_internal_ops; sd->internal_ops = &csid_v4l2_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d", snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d",
MSM_CSID_NAME, csid->id); MSM_CSID_NAME, csid->id);
v4l2_set_subdevdata(sd, csid); v4l2_set_subdevdata(sd, csid);