diff options
Diffstat (limited to 'drivers/media/i2c/ov9734.c')
| -rw-r--r-- | drivers/media/i2c/ov9734.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/media/i2c/ov9734.c b/drivers/media/i2c/ov9734.c index af50c66cf5ce..df538ceb71c3 100644 --- a/drivers/media/i2c/ov9734.c +++ b/drivers/media/i2c/ov9734.c @@ -60,6 +60,12 @@ #define OV9734_TEST_PATTERN_ENABLE BIT(7) #define OV9734_TEST_PATTERN_BAR_SHIFT 2 +/* Group Access */ +#define OV9734_REG_GROUP_ACCESS 0x3208 +#define OV9734_GROUP_HOLD_START 0x0 +#define OV9734_GROUP_HOLD_END 0x10 +#define OV9734_GROUP_HOLD_LAUNCH 0xa0 + enum { OV9734_LINK_FREQ_180MHZ_INDEX, }; @@ -433,6 +439,11 @@ static int ov9734_update_digital_gain(struct ov9734 *ov9734, u32 d_gain) { int ret; + ret = ov9734_write_reg(ov9734, OV9734_REG_GROUP_ACCESS, 1, + OV9734_GROUP_HOLD_START); + if (ret) + return ret; + ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_R_GAIN, 2, d_gain); if (ret) return ret; @@ -441,7 +452,18 @@ static int ov9734_update_digital_gain(struct ov9734 *ov9734, u32 d_gain) if (ret) return ret; - return ov9734_write_reg(ov9734, OV9734_REG_MWB_B_GAIN, 2, d_gain); + ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_B_GAIN, 2, d_gain); + if (ret) + return ret; + + ret = ov9734_write_reg(ov9734, OV9734_REG_GROUP_ACCESS, 1, + OV9734_GROUP_HOLD_END); + if (ret) + return ret; + + ret = ov9734_write_reg(ov9734, OV9734_REG_GROUP_ACCESS, 1, + OV9734_GROUP_HOLD_LAUNCH); + return ret; } static int ov9734_test_pattern(struct ov9734 *ov9734, u32 pattern) |