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V4L/DVB (11419): gspca - m5602-ov9650: Don't read exposure data from COM1. 

ov9650: Reading the COM1 register corrupts the image.
Decrease the granularity of the exposure and limit its upper range
as setting such high values doesn't have any effect on the image.

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andr?n 2008-12-31 07:25:42 -03:00 committed by Mauro Carvalho Chehab
parent 5a0489b3be
commit 7136e705d8
2 changed files with 3 additions and 8 deletions
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9
drivers/media/video/gspca/m5602/m5602_ov9650.c
View File

@ -75,8 +75,8 @@ const static struct ctrl ov9650_ctrls[] = {
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "exposure",
.minimum = 0x00,
.maximum = 0xffff,
.step = 0x1,
.maximum = 0x1ff,
.step = 0x4,
.default_value = EXPOSURE_DEFAULT,
.flags = V4L2_CTRL_FLAG_SLIDER
},
@ -407,11 +407,6 @@ int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
if (err < 0)
return err;
*val = i2c_data & 0x03;
err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
if (err < 0)
return err;

2
drivers/media/video/gspca/m5602/m5602_ov9650.h
View File

@ -123,7 +123,7 @@
#define GAIN_DEFAULT 0x14
#define RED_GAIN_DEFAULT 0x70
#define BLUE_GAIN_DEFAULT 0x20
#define EXPOSURE_DEFAULT 0x5003
#define EXPOSURE_DEFAULT 0x1ff
/*****************************************************************************/