diff options
| -rw-r--r-- | drivers/media/video/mxc/capture/ov5640.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/capture/ov5640.c b/drivers/media/video/mxc/capture/ov5640.c index 99ca59cbcd90..9d1e40e7927c 100644 --- a/drivers/media/video/mxc/capture/ov5640.c +++ b/drivers/media/video/mxc/capture/ov5640.c @@ -635,6 +635,32 @@ static void ov5640_soft_reset(void) msleep(10); } +/* set sensor driver capability + * 0x302c[7:6] - strength + 00 - 1x + 01 - 2x + 10 - 3x + 11 - 4x + */ +static int ov5640_driver_capability(int strength) +{ + u8 temp = 0; + + if (strength > 4 || strength < 1) { + pr_err("The valid driver capability of ov5640 is 1x~4x\n"); + return -EINVAL; + } + + ov5640_read_reg(0x302c, &temp); + + temp &= ~0xc0; /* clear [7:6] */ + temp |= ((strength - 1) << 6); /* set [7:6] */ + + ov5640_write_reg(0x302c, temp); + + return 0; +} + /* calculate sysclk */ static int ov5640_get_sysclk(void) { @@ -952,6 +978,10 @@ static int ov5640_init_mode(void) if (retval < 0) goto err; + /* change driver capability to 2x according to validation board. + * if the image is not stable, please increase the driver strength. + */ + ov5640_driver_capability(2); ov5640_set_bandingfilter(); ov5640_set_AE_target(AE_Target); ov5640_set_night_mode(night_mode); |