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[media] m5mols: Optimize the capture set up sequence 

Improve the single frame capture set up sequence. Since there is
no need to re-enable the interrupts in each capture sequence, unmask
the required interrupts once at the device initialization time.

Signed-off-by: HeungJun Kim <riverful.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
HeungJun Kim 2011-12-03 11:18:57 -03:00 committed by Mauro Carvalho Chehab
parent 0f2ee1dd49
commit 92e93a1fd0
2 changed files with 12 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/media/video/m5mols/m5mols_capture.c
View File

@ -108,47 +108,33 @@ int m5mols_start_capture(struct m5mols_info *info)
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
* Synchronize the controls, set the capture frame resolution and color
* format. The frame capture is initiated during switching from Monitor
* to Capture mode.
*/
ret = m5mols_mode(info, REG_MONITOR);
if (!ret)
ret = m5mols_sync_controls(info);
if (!ret)
ret = m5mols_lock_3a(info, true);
ret = m5mols_write(sd, CAPP_YUVOUT_MAIN, REG_JPEG);
if (!ret)
ret = m5mols_enable_interrupt(sd, REG_INT_CAPTURE);
ret = m5mols_write(sd, CAPP_MAIN_IMAGE_SIZE, resolution);
if (!ret)
ret = m5mols_lock_3a(info, true);
if (!ret)
ret = m5mols_mode(info, REG_CAPTURE);
if (!ret)
/* Wait for capture interrupt, after changing capture mode */
/* Wait until a frame is captured to ISP internal memory */
ret = m5mols_wait_interrupt(sd, REG_INT_CAPTURE, 2000);
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)
* Initiate the captured data transfer to a MIPI-CSI receiver.
*/
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) {

3
drivers/media/video/m5mols/m5mols_core.c
View File

@ -788,7 +788,8 @@ static int m5mols_fw_start(struct v4l2_subdev *sd)
ret = m5mols_write(sd, PARM_INTERFACE, REG_INTERFACE_MIPI);
if (!ret)
ret = m5mols_enable_interrupt(sd, REG_INT_AF);
ret = m5mols_enable_interrupt(sd,
REG_INT_AF | REG_INT_CAPTURE);
return ret;
}