/**
* m5mols_start_monitor - Start the monitor mode
*
* Before applying the controls setup the resolution and frame rate
* in PARAMETER mode, and then switch over to MONITOR mode.
*/
static int m5mols_start_monitor(struct m5mols_info *info)
{
struct v4l2_subdev *sd = &info->sd;
int ret;
ret = m5mols_mode(info, REG_PARAMETER);
if (!ret)
ret = m5mols_write(sd, PARM_MON_SIZE, info->resolution);
if (!ret)
ret = m5mols_write(sd, PARM_MON_FPS, REG_FPS_30);
if (!ret)
ret = m5mols_mode(info, REG_MONITOR);
if (!ret)
ret = m5mols_sync_controls(info);
return ret;
}
int m5mols_start_capture(struct m5mols_info *info)
{
struct v4l2_subdev *sd = &info->sd;
u8 resolution = info->resolution;
int timeout;
int ret;
/*
* Preparing capture. Setting control & interrupt before entering
* capture mode
*
* 1) change to MONITOR mode for operating control & interrupt
* 2) set controls (considering v4l2_control value & lock 3A)
* 3) set interrupt
* 4) change to CAPTURE mode
*/
ret = m5mols_mode(info, REG_MONITOR);
if (!ret)
ret = m5mols_sync_controls(info);
if (!ret)
ret = m5mols_lock_3a(info, true);
if (!ret)
ret = m5mols_enable_interrupt(sd, REG_INT_CAPTURE);
if (!ret)
ret = m5mols_mode(info, REG_CAPTURE);
if (!ret) {
/* Wait for capture interrupt, after changing capture mode */
timeout = wait_event_interruptible_timeout(info->irq_waitq,
test_bit(ST_CAPT_IRQ, &info->flags),
msecs_to_jiffies(2000));
if (test_and_clear_bit(ST_CAPT_IRQ, &info->flags))
ret = m5mols_capture_error_handler(info, timeout);
}
if (!ret)
ret = m5mols_lock_3a(info, false);
if (ret)
return ret;
/*
* Starting capture. Setting capture frame count and resolution and
* the format(available format: JPEG, Bayer RAW, YUV).
*
* 1) select single or multi(enable to 25), format, size
* 2) set interrupt
* 3) start capture(for main image, now)
* 4) get information
* 5) notify file size to v4l2 device(e.g, to s5p-fimc v4l2 device)
*/
ret = m5mols_write(sd, CAPC_SEL_FRAME, 1);
if (!ret)
ret = m5mols_write(sd, CAPP_YUVOUT_MAIN, REG_JPEG);
if (!ret)
ret = m5mols_write(sd, CAPP_MAIN_IMAGE_SIZE, resolution);
if (!ret)
ret = m5mols_enable_interrupt(sd, REG_INT_CAPTURE);
if (!ret)
ret = m5mols_write(sd, CAPC_START, REG_CAP_START_MAIN);
if (!ret) {
/* Wait for the capture completion interrupt */
timeout = wait_event_interruptible_timeout(info->irq_waitq,
test_bit(ST_CAPT_IRQ, &info->flags),
msecs_to_jiffies(2000));
if (test_and_clear_bit(ST_CAPT_IRQ, &info->flags)) {
ret = m5mols_capture_info(info);
if (!ret)
v4l2_subdev_notify(sd, 0, &info->cap.total);
}
}
return m5mols_capture_error_handler(info, timeout);
}