From 8baa7b5eaab74282328b2d8ace84261bdab73acd Mon Sep 17 00:00:00 2001
From: Zhenke Fan <fanzy.fan@rock-chips.com>
Date: Tue, 29 Dec 2020 16:51:28 +0800
Subject: [PATCH] media: i2c: sc2310: fix bug for gain function error

Signed-off-by: Zhenke Fan <fanzy.fan@rock-chips.com>
Change-Id: I839c0434eda11f66484a9b617cd1c5c346b3a204
---
 drivers/media/i2c/sc2310.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/i2c/sc2310.c b/drivers/media/i2c/sc2310.c
index f30bb282f323..96ec3324b9cd 100644
--- a/drivers/media/i2c/sc2310.c
+++ b/drivers/media/i2c/sc2310.c
@@ -81,7 +81,7 @@
 #define SC2310_SF_REG_DGAIN_FINE	0x3e11
 
 #define SC2310_GAIN_MIN			0x40
-#define SC2310_GAIN_MAX			0x8000
+#define SC2310_GAIN_MAX			(44 * 32 * 64)
 #define SC2310_GAIN_STEP		1
 #define SC2310_GAIN_DEFAULT		0x40
 
@@ -919,11 +919,11 @@ static void sc2310_get_gain_reg(u32 val, u32 *again_reg, u32 *again_fine_reg,
 	u32 again = 0;
 	u32 dgain = 0;
 
-	if (val <= 1024) {
+	if (val <= 2764) {
 		again = val;
 		dgain = 128;
 	} else {
-		again = 1024;
+		again = 2764;
 		dgain = val * 128 / again;
 	}