diff options
| author | Sheng Nan <b38800@freescale.com> | 2012-11-23 10:59:22 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-11-28 16:57:04 +0800 |
| commit | f4ee80c9873f12c63c420f9ffd3ee0e46782f466 (patch) | |
| tree | d31847eaa8098aa0e60bb4e7204510b360f35905 | |
| parent | 46ffead5b08604716e15c955005a9de6fbb1b38d (diff) | |
ENGR00234362 Camera: ov5640_mipi: wait for sensor stable before streamon
ov5642 add some delay to wait for sensor stable after S_PARM.
And ov5640_mipi should keep the same behavior.
So the upper layer can trust the first frame comes out of ov5640_mipi.
- delay added according to the recommended time from ov company
Signed-off-by: Sheng Nan <b38800@freescale.com>
| -rw-r--r-- | drivers/media/video/mxc/capture/ov5640_mipi.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/media/video/mxc/capture/ov5640_mipi.c b/drivers/media/video/mxc/capture/ov5640_mipi.c index bde39a51d368..d2b79d2162be 100644 --- a/drivers/media/video/mxc/capture/ov5640_mipi.c +++ b/drivers/media/video/mxc/capture/ov5640_mipi.c @@ -1216,7 +1216,7 @@ static int ov5640_init_mode(enum ov5640_frame_rate frame_rate, s32 ArySize = 0; int retval = 0; void *mipi_csi2_info; - u32 mipi_reg; + u32 mipi_reg, msec_wait4stable = 0; enum ov5640_downsize_mode dn_mode, orig_dn_mode; if ((mode > ov5640_mode_MAX || mode < ov5640_mode_MIN) @@ -1288,6 +1288,20 @@ static int ov5640_init_mode(enum ov5640_frame_rate frame_rate, OV5640_set_bandingfilter(); ov5640_set_virtual_channel(ov5640_data.csi); + /* add delay to wait for sensor stable */ + if (mode == ov5640_mode_QSXGA_2592_1944) { + /* dump the first two frames: 1/7.5*2 + * the frame rate of QSXGA is 7.5fps */ + msec_wait4stable = 267; + } else if (frame_rate == ov5640_15_fps) { + /* dump the first nine frames: 1/15*9 */ + msec_wait4stable = 600; + } else if (frame_rate == ov5640_30_fps) { + /* dump the first nine frames: 1/30*9 */ + msec_wait4stable = 300; + } + msleep(msec_wait4stable); + if (mipi_csi2_info) { unsigned int i; |