/* Core ops: it is highly recommended to implement at least these ops:
- g_chip_ident
log_status
g_register
s_register
performed later. It must not sleep. *Called from an IRQ context*.
*/
struct v4l2_subdev_core_ops {
- int (*g_chip_ident)(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip);
int (*log_status)(struct v4l2_subdev *sd);
int (*s_io_pin_config)(struct v4l2_subdev *sd, size_t n,
struct v4l2_subdev_io_pin_config *pincfg);
/* Call an ops of a v4l2_subdev, doing the right checks against
NULL pointers.
- Example: err = v4l2_subdev_call(sd, core, g_chip_ident, &chip);
+ Example: err = v4l2_subdev_call(sd, core, s_std, norm);
*/
#define v4l2_subdev_call(sd, o, f, args...) \
(!(sd) ? -ENODEV : (((sd)->ops->o && (sd)->ops->o->f) ? \