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media: i2c: sc530ai: update gain map according to datasheet

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Change-Id: I842a776b4f668848a81a2b928f136df1acc5227f
Signed-off-by: Su Yuefu <yuefu.su@rock-chips.com>
This commit is contained in:
Su Yuefu
2024-01-11 18:01:42 +08:00
committed by Tao Huang
parent 99111d8fb2
commit ca4e22208b
1 changed files with 17 additions and 16 deletions
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33
drivers/media/i2c/sc530ai.c
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@@ -81,7 +81,7 @@
#define SC530AI_REG_ANA_GAIN 0x3e09
#define SC530AI_GAIN_MIN 0x20
#define SC530AI_GAIN_MAX (32 * 326)
#define SC530AI_GAIN_MAX (9635) //76.48 * 3.938 * 32
#define SC530AI_GAIN_STEP 1
#define SC530AI_GAIN_DEFAULT 0x20
@@ -1017,39 +1017,40 @@ static void sc530ai_get_gain_reg(u32 total_gain, u32 *again, u32 *dgain,
*again = 0x00;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 1000;
} else if (gain_factor < 2550) { /* 2x - 2.55x gain */
} else if (gain_factor < 2390) { /* 2x - 2.39x gain */
*again = 0x01;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 2000;
} else if (gain_factor < 2550 * 2) { /* 2.55x - 5.1x gain */
} else if (gain_factor < 2390 * 2) { /* 2.39x - 4.78x gain */
*again = 0x40;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 2550;
} else if (gain_factor < 2550 * 4) { /* 5.1x - 10.2x gain */
*dgain_fine = gain_factor * 128 / 2390;
} else if (gain_factor < 2390 * 4) { /* 4.78x - 9.56x gain */
*again = 0x48;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 5110;
} else if (gain_factor < 2550 * 8) { /* 10.2x - 20.4x gain */
*dgain_fine = gain_factor * 128 / 2390 / 2;
} else if (gain_factor < 2390 * 8) { /* 9.56x - 19.12x gain */
*again = 0x49;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 10200;
} else if (gain_factor < 2550 * 16) { /* 20.4x - 40.8x gain */
*dgain_fine = gain_factor * 128 / 2390 / 4;
} else if (gain_factor < 2390 * 16) { /* 19.12x - 38.24x gain */
*again = 0x4B;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 20400;
} else if (gain_factor < 2550 * 32) { /* 40.8x - 81.6x gain */
*dgain_fine = gain_factor * 128 / 2390 / 8;
} else if (gain_factor < 2390 * 32) { /* 38.24x - 76.48x gain */
*again = 0x4f;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 40800;
} else if (gain_factor < 2550 * 64) { /* 81.6x - 163.2x gain */
*dgain_fine = gain_factor * 128 / 2390 / 16;
} else if (gain_factor < 2390 * 64) { /* 76.48x - 152.96x gain */
*again = 0x5f;
*dgain = 0x00;
*dgain_fine = gain_factor * 128 / 40800 / 2;
} else if (gain_factor < 2550 * 128) { /* 163.2x - 326.4x gain */
*dgain_fine = gain_factor * 128 / 2390 / 32;
} else if (gain_factor < 2390 * 128) { /* 152.96x - 301.1x gain */
*again = 0x5f;
*dgain = 0x01;
*dgain_fine = gain_factor * 128 / 40800 / 4;
*dgain_fine = gain_factor * 128 / 2390 / 64;
}
*dgain_fine = *dgain_fine / 4 * 4;
}
static int sc530ai_set_hdrae(struct sc530ai *sc530ai,