summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorSheng Nan <b38800@freescale.com>2012-11-23 10:59:22 +0800
committerJason Liu <r64343@freescale.com>2012-11-28 16:57:04 +0800
commitf4ee80c9873f12c63c420f9ffd3ee0e46782f466 (patch)
treed31847eaa8098aa0e60bb4e7204510b360f35905 /drivers
parent46ffead5b08604716e15c955005a9de6fbb1b38d (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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/mxc/capture/ov5640_mipi.c16
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;