#define OV2740_REG_MWB_R_GAIN 0x500a
#define OV2740_REG_MWB_G_GAIN 0x500c
#define OV2740_REG_MWB_B_GAIN 0x500e
-#define OV2740_DGTL_GAIN_MIN 0
+#define OV2740_DGTL_GAIN_MIN 1024
#define OV2740_DGTL_GAIN_MAX 4095
#define OV2740_DGTL_GAIN_STEP 1
#define OV2740_DGTL_GAIN_DEFAULT 1024
#define OV2740_TEST_PATTERN_ENABLE BIT(7)
#define OV2740_TEST_PATTERN_BAR_SHIFT 2
+/* Group Access */
+#define OV2740_REG_GROUP_ACCESS 0x3208
+#define OV2740_GROUP_HOLD_START 0x0
+#define OV2740_GROUP_HOLD_END 0x10
+#define OV2740_GROUP_HOLD_LAUNCH 0xa0
+
/* ISP CTRL00 */
#define OV2740_REG_ISP_CTRL00 0x5000
/* ISP CTRL01 */
{
int ret = 0;
+ ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
+ OV2740_GROUP_HOLD_START);
+ if (ret)
+ return ret;
+
ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_R_GAIN, 2, d_gain);
if (ret)
return ret;
if (ret)
return ret;
- return ov2740_write_reg(ov2740, OV2740_REG_MWB_B_GAIN, 2, d_gain);
+ ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_B_GAIN, 2, d_gain);
+ if (ret)
+ return ret;
+
+ ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
+ OV2740_GROUP_HOLD_END);
+ if (ret)
+ return ret;
+
+ ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
+ OV2740_GROUP_HOLD_LAUNCH);
+ return ret;
}
static int ov2740_test_pattern(struct ov2740 *ov2740, u32 pattern)