diff options
| author | Sheng Nan <b38800@freescale.com> | 2012-11-23 10:59:22 +0800 |
|---|---|---|
| committer | Sheng Nan <b38800@freescale.com> | 2012-11-23 11:09:55 +0800 |
| commit | 765f6422a52983a225836164198e4c74d34ad434 (patch) | |
| tree | d9119c5f76fada56b866b69aafc0cbdc4afbf1a1 /drivers/media/video | |
| parent | ba7a36b8c4cebf94b8694c20b872f44509a7d895 (diff) | |
| download | linux-765f6422a52983a225836164198e4c74d34ad434.tar.gz | |
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>
Diffstat (limited to 'drivers/media/video')
| -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; |