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authorHans Verkuil <hverkuil@xs4all.nl>2009-03-18 13:24:05 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:43:30 -0300
commitb794aabff01a704df5c0bcf6537e6a7343a08465 (patch)
tree41d8e60b09f33017bde5f5b4847688ec7caadc19 /drivers/media/video
parentca07561ac70b00b5c2b5af727b3d0b6a4f91bee2 (diff)
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>
Diffstat (limited to 'drivers/media/video')
-rw-r--r--drivers/media/video/ov7670.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c
index ab245f71b195..0e2184ec994e 100644
--- a/drivers/media/video/ov7670.c
+++ b/drivers/media/video/ov7670.c
@@ -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 = {

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