4x gain ceiling is not enough to capture a decent image in conditions
of total darkness and only a LED light source. Allow a maximum gain
of 32x instead.
This doesn't have any drawback since the image quality in 'normal'
light conditions is the same.
Signed-off-by: Javier Martin <javier.martin@xxxxxxxxxxxxxxxxx>
---
drivers/media/video/ov7670.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c
index 5faa3d8..2ea9c51 100644
--- a/drivers/media/video/ov7670.c
+++ b/drivers/media/video/ov7670.c
@@ -366,7 +366,7 @@ static struct regval_list ov7670_fmt_yuv422[] = {
{ REG_RGB444, 0 }, /* No RGB444 please */
{ REG_COM1, 0 }, /* CCIR601 */
{ REG_COM15, COM15_R00FF },
- { REG_COM9, 0x18 }, /* 4x gain ceiling; 0x8 is reserved bit */
+ { REG_COM9, 0x48 }, /* 32x gain ceiling; 0x8 is reserved bit */
{ 0x4f, 0x80 }, /* "matrix coefficient 1" */
{ 0x50, 0x80 }, /* "matrix coefficient 2" */
{ 0x51, 0 }, /* vb */
--
1.7.9.5
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