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V4L/DVB (11117): ov7670: add support to get/set registers 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-03-18 13:24:05 -03:00 committed by Mauro Carvalho Chehab
parent ca07561ac7
commit b794aabff0
1 changed files with 34 additions and 0 deletions
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34
drivers/media/video/ov7670.c
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@ -1180,6 +1180,36 @@ static int ov7670_g_chip_ident(struct v4l2_subdev *sd,
return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_OV7670, 0);
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ov7670_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
unsigned char val = 0;
int ret;
if (!v4l2_chip_match_i2c_client(client, &reg->match))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
ret = ov7670_read(sd, reg->reg & 0xff, &val);
reg->val = val;
reg->size = 1;
return ret;
}
static int ov7670_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (!v4l2_chip_match_i2c_client(client, &reg->match))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
ov7670_write(sd, reg->reg & 0xff, reg->val & 0xff);
return 0;
}
#endif
/* ----------------------------------------------------------------------- */
static const struct v4l2_subdev_core_ops ov7670_core_ops = {
@ -1189,6 +1219,10 @@ static const struct v4l2_subdev_core_ops ov7670_core_ops = {
.queryctrl = ov7670_queryctrl,
.reset = ov7670_reset,
.init = ov7670_init,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ov7670_g_register,
.s_register = ov7670_s_register,
#endif
};
static const struct v4l2_subdev_video_ops ov7670_video_ops = {