SYNOPSIS

struct v4l2_subdev_core_ops {
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);
int (* init) (struct v4l2_subdev *sd, u32 val);
int (* load_fw) (struct v4l2_subdev *sd);
int (* reset) (struct v4l2_subdev *sd, u32 val);
int (* s_gpio) (struct v4l2_subdev *sd, u32 val);
int (* queryctrl) (struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
int (* g_ctrl) (struct v4l2_subdev *sd, struct v4l2_control *ctrl);
int (* s_ctrl) (struct v4l2_subdev *sd, struct v4l2_control *ctrl);
int (* g_ext_ctrls) (struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (* s_ext_ctrls) (struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (* try_ext_ctrls) (struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (* querymenu) (struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
long (* ioctl) (struct v4l2_subdev *sd, unsigned int cmd, void *arg);
#ifdef CONFIG_COMPAT
long (* compat_ioctl32) (struct v4l2_subdev *sd, unsigned int cmd,unsigned long arg);
#endif
#ifdef CONFIG_VIDEO_ADV_DEBUG
int (* g_register) (struct v4l2_subdev *sd, struct v4l2_dbg_register *reg);
int (* s_register) (struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg);
#endif
int (* s_power) (struct v4l2_subdev *sd, int on);
int (* interrupt_service_routine) (struct v4l2_subdev *sd,u32 status, bool *handled);
int (* subscribe_event) (struct v4l2_subdev *sd, struct v4l2_fh *fh,struct v4l2_event_subscription *sub);
int (* unsubscribe_event) (struct v4l2_subdev *sd, struct v4l2_fh *fh,struct v4l2_event_subscription *sub);
int (* registered_async) (struct v4l2_subdev *sd);
};

MEMBERS

log_status

callback for VIDIOC_LOG_STATUS ioctl handler code.

s_io_pin_config

configure one or more chip I/O pins for chips that multiplex different internal signal pads out to IO pins. This function takes a pointer to an array of 'n' pin configuration entries, one for each pin being configured. This function could be called at times other than just subdevice initialization.

init

initialize the sensor registers to some sort of reasonable default values. Do not use for new drivers and should be removed in existing drivers.

load_fw

load firmware.

reset

generic reset command. The argument selects which subsystems to reset. Passing 0 will always reset the whole chip. Do not use for new drivers without discussing this first on the linux-media mailinglist. There should be no reason normally to reset a device.

s_gpio

set GPIO pins. Very simple right now, might need to be extended with a direction argument if needed.

queryctrl

callback for VIDIOC_QUERYCTL ioctl handler code.

g_ctrl

callback for VIDIOC_G_CTRL ioctl handler code.

s_ctrl

callback for VIDIOC_S_CTRL ioctl handler code.

g_ext_ctrls

callback for VIDIOC_G_EXT_CTRLS ioctl handler code.

s_ext_ctrls

callback for VIDIOC_S_EXT_CTRLS ioctl handler code.

try_ext_ctrls

callback for VIDIOC_TRY_EXT_CTRLS ioctl handler code.

querymenu

callback for VIDIOC_QUERYMENU ioctl handler code.

ioctl

called at the end of ioctl syscall handler at the V4L2 core. used to provide support for private ioctls used on the driver.

compat_ioctl32

called when a 32 bits application uses a 64 bits Kernel, in order to fix data passed from/to userspace.

g_register

callback for VIDIOC_G_REGISTER ioctl handler code.

s_register

callback for VIDIOC_G_REGISTER ioctl handler code.

s_power

puts subdevice in power saving mode (on == 0) or normal operation mode (on == 1).

interrupt_service_routine

Called by the bridge chip's interrupt service handler, when an interrupt status has be raised due to this subdev, so that this subdev can handle the details. It may schedule work to be performed later. It must not sleep. *Called from an IRQ context*.

subscribe_event

used by the drivers to request the control framework that for it to be warned when the value of a control changes.

unsubscribe_event

remove event subscription from the control framework.

registered_async

the subdevice has been registered async.

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