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[media] gspca/sn9c20x: Test if sensor is a OV sensor 

Instead of just assuming a ov9650 sensor based on USB ID,
double-check it, by reading the sensor ID.

Acked-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2010-12-06 06:53:05 -03:00
parent dd89aec473
commit e78567d227
1 changed files with 9 additions and 0 deletions
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9
drivers/media/video/gspca/sn9c20x.c
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@ -1224,8 +1224,17 @@ static int i2c_r2(struct gspca_dev *gspca_dev, u8 reg, u16 *val)
static int ov9650_init_sensor(struct gspca_dev *gspca_dev) static int ov9650_init_sensor(struct gspca_dev *gspca_dev)
{ {
int i; int i;
u16 id;
struct sd *sd = (struct sd *) gspca_dev; struct sd *sd = (struct sd *) gspca_dev;
if (i2c_r2(gspca_dev, 0x1c, &id) < 0)
return -EINVAL;
if (id != 0x7fa2) {
err("sensor id for ov9650 doesn't match (0x%04x)", id);
return -ENODEV;
}
for (i = 0; i < ARRAY_SIZE(ov9650_init); i++) { for (i = 0; i < ARRAY_SIZE(ov9650_init); i++) {
if (i2c_w1(gspca_dev, ov9650_init[i].reg, if (i2c_w1(gspca_dev, ov9650_init[i].reg,
ov9650_init[i].val) < 0) { ov9650_init[i].val) < 0) {