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V4L/DVB (10691): v4l2-common: add v4l2_i2c_subdev_addr()

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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>
This commit is contained in:
Hans Verkuil 2009-02-21 18:08:41 -03:00 committed by Mauro Carvalho Chehab
parent 81dde91f64
commit ab37319081
2 changed files with 11 additions and 0 deletions
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9
drivers/media/video/v4l2-common.c
View File

@ -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)

2
include/media/v4l2-common.h
View File

@ -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 */