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| author |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-21 10:08:31 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-23 08:04:21 -0300 |
| commit | a39c57f8cd0526d8227468f8e0f88c4be4f97139 (patch) | |
| tree | 8beaf9835d754bf5fc90fb331adb131d4855f4ac /include/media | |
| parent | [media] v4l2-subdev.rst: add cross references to new sections (diff) | |
| download | linux-dev-a39c57f8cd0526d8227468f8e0f88c4be4f97139.tar.xz linux-dev-a39c57f8cd0526d8227468f8e0f88c4be4f97139.zip | |
[media] v4l2-common.h: document the subdev functions
There are some subdev-specific functions at v4l2-common.h
that are mentioned at v4l2-subdev.rst.
Document them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-common.h | 49 |
1 files changed, 42 insertions, 7 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 1cc0c5ba16b3..9b1dfcd9e229 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -80,8 +80,6 @@ /* ------------------------------------------------------------------------- */ -/* Control helper function */ - int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); /* ------------------------------------------------------------------------- */ @@ -96,23 +94,60 @@ struct v4l2_device; struct v4l2_subdev; struct v4l2_subdev_ops; - -/* Load an i2c module and return an initialized v4l2_subdev struct. - The client_type argument is the name of the chip that's on the adapter. */ +/** + * v4l2_i2c_new_subdev - Load an i2c module and return an initialized + * &struct v4l2_subdev. + * + * @v4l2_dev: pointer to &struct v4l2_device + * @adapter: pointer to struct i2c_adapter + * @client_type: name of the chip that's on the adapter. + * @addr: I2C address. If zero, it will use @probe_addrs + * @probe_addrs: array with a list of address. The last entry at such + * array should be %I2C_CLIENT_END. + * + * returns a &struct v4l2_subdev pointer. + */ struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, const char *client_type, u8 addr, const unsigned short *probe_addrs); struct i2c_board_info; +/** + * v4l2_i2c_new_subdev_board - Load an i2c module and return an initialized + * &struct v4l2_subdev. + * + * @v4l2_dev: pointer to &struct v4l2_device + * @adapter: pointer to struct i2c_adapter + * @info: pointer to struct i2c_board_info used to replace the irq, + * platform_data and addr arguments. + * @probe_addrs: array with a list of address. The last entry at such + * array should be %I2C_CLIENT_END. + * + * returns a &struct v4l2_subdev pointer. + */ struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, struct i2c_adapter *adapter, struct i2c_board_info *info, const unsigned short *probe_addrs); -/* Initialize a v4l2_subdev with data from an i2c_client struct */ +/** + * v4l2_i2c_subdev_init - Initializes a &struct v4l2_subdev with data from + * an i2c_client struct. + * + * @sd: pointer to &struct v4l2_subdev + * @client: pointer to struct i2c_client + * @ops: pointer to &struct v4l2_subdev_ops + */ 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. */ + +/** + * v4l2_i2c_subdev_addr - returns i2c client address of &struct v4l2_subdev. + * + * @sd: pointer to &struct v4l2_subdev + * + * Returns the address of an I2C sub-device + */ unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd); enum v4l2_i2c_tuner_type { |