hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[media] v4l2-common.h: Add documentation for other functions 

Not all functions at v4l2-common.h are documented. Add
documentation for some other ones.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-07-21 12:26:04 -03:00
parent a39c57f8cd
commit b871915893
1 changed files with 38 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
include/media/v4l2-common.h
View File

@ -78,9 +78,26 @@
v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); \
} while (0)
/* ------------------------------------------------------------------------- */
/**
* v4l2_ctrl_query_fill- Fill in a struct v4l2_queryctrl
*
* @qctrl: pointer to the &struct v4l2_queryctrl to be filled
* @min: minimum value for the control
* @max: maximum value for the control
* @step: control step
* @def: default value for the control
*
* Fills the &struct v4l2_queryctrl fields for the query control.
*
* .. note::
*
* This function assumes that the @qctrl->id field is filled.
*
* Returns -EINVAL if the control is not known by the V4L2 core, 0 on success.
*/
int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def);
int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl,
s32 min, s32 max, s32 step, s32 def);
/* ------------------------------------------------------------------------- */
@ -172,12 +189,28 @@ const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type);
struct spi_device;
/* Load an spi module and return an initialized v4l2_subdev struct.
The client_type argument is the name of the chip that's on the adapter. */
/**
* v4l2_spi_new_subdev - Load an spi module and return an initialized
* &struct v4l2_subdev.
*
*
* @v4l2_dev: pointer to &struct v4l2_device.
* @master: pointer to struct spi_master.
* @info: pointer to struct spi_board_info.
*
* returns a &struct v4l2_subdev pointer.
*/
struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
struct spi_master *master, struct spi_board_info *info);
/* Initialize a v4l2_subdev with data from an spi_device struct */
/**
* v4l2_spi_subdev_init - Initialize a v4l2_subdev with data from an
* spi_device struct.
*
* @sd: pointer to &struct v4l2_subdev
* @spi: pointer to struct spi_device.
* @ops: pointer to &struct v4l2_subdev_ops
*/
void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
const struct v4l2_subdev_ops *ops);
#endif