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media: i2c: gc02m2 fixes the base value of digital gain to avoid purple in the light

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Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
Change-Id: I524ba475291fd6d0e154b9276e099f81c1fae301
This commit is contained in:
Zefa Chen
2021-07-13 09:50:57 +08:00
parent 2052425b68
commit 19c55f5526
1 changed files with 2 additions and 1 deletions
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3
drivers/media/i2c/gc02m2.c
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@@ -1046,6 +1046,7 @@ static const struct v4l2_subdev_ops gc02m2_subdev_ops = {
.pad = &gc02m2_pad_ops,
};
#define DIGITAL_GAIN_BASE 1024
static int gc02m2_set_gain_reg(struct gc02m2 *gc02m2, u32 total_gain)
{
struct device *dev = &gc02m2->client->dev;
@@ -1065,7 +1066,7 @@ static int gc02m2_set_gain_reg(struct gc02m2 *gc02m2, u32 total_gain)
GC02M2_PAGE_SELECT, 0x00);
ret |= gc02m2_write_reg(gc02m2->client,
GC02M2_ANALOG_GAIN_REG, GC02M2_AGC_Param[i][1]);
dgain = total_gain * 256 / GC02M2_AGC_Param[i][0];
dgain = total_gain * DIGITAL_GAIN_BASE / GC02M2_AGC_Param[i][0];
dev_dbg(dev, "AGC_Param[%d][0] = %d dgain = 0x%04x!\n",
i, GC02M2_AGC_Param[i][0], dgain);