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authorHans Verkuil <hverkuil@xs4all.nl>2009-02-21 18:08:41 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:42:54 -0300
commitab373190813a2e89f9ab7338c6b106804611f2b7 (patch)
tree104cb4edf5f751441f3cabc7ac768dc98c661a5d
parent81dde91f640d6dea89229bb00c4ff38739fc1867 (diff)
V4L/DVB (10691): v4l2-common: add v4l2_i2c_subdev_addr()
Add small function to retrieve the i2c address from a v4l2_subdev pointer. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/video/v4l2-common.c9
-rw-r--r--include/media/v4l2-common.h2
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index bca4daf87a1..caa7ba0705a 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -1022,6 +1022,15 @@ struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter,
}
EXPORT_SYMBOL_GPL(v4l2_i2c_new_probed_subdev);
+/* Return i2c client address of v4l2_subdev. */
+unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return client ? client->addr : I2C_CLIENT_END;
+}
+EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_addr);
+
/* Return a list of I2C tuner addresses to probe. Use only if the tuner
addresses are unknown. */
const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type)
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index de785da4564..7779d9c93ec 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -154,6 +154,8 @@ struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter,
/* Initialize an v4l2_subdev with data from an i2c_client struct */
void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
const struct v4l2_subdev_ops *ops);
+/* Return i2c client address of v4l2_subdev. */
+unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd);
enum v4l2_i2c_tuner_type {
ADDRS_RADIO, /* Radio tuner addresses */