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Subject[PATCH v3 34/35] media: camss: csid: Add support for events triggered by user controls
Date
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>
---
drivers/media/platform/qcom/camss/camss-csid.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index a581377..b50eb96 100644
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -17,6 +17,7 @@
#include <linux/regulator/consumer.h>
#include <media/media-entity.h>
#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
#include <media/v4l2-subdev.h>

#include "camss-csid.h"
@@ -1266,6 +1267,8 @@ static int csid_link_setup(struct media_entity *entity,

static const struct v4l2_subdev_core_ops csid_core_ops = {
.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 = {
@@ -1311,7 +1314,8 @@ int msm_csid_register_entity(struct csid_device *csid,

v4l2_subdev_init(sd, &csid_v4l2_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",
MSM_CSID_NAME, csid->id);
v4l2_set_subdevdata(sd, csid);
--
2.7.4
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