[media] media: ov7670: Allow 32x maximum gain for yuv422

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@vista-silicon.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index e7c82b297514ce44dae6e7a33ecf5cc556cb09ea..882ddf6f66d31526728b3bd0cdc8ac811b279f49 100644 (file)
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -353,7 +353,7 @@ 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 */