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>
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@ -1180,6 +1180,36 @@ static int ov7670_g_chip_ident(struct v4l2_subdev *sd,
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return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_OV7670, 0);
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}
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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static int ov7670_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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unsigned char val = 0;
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int ret;
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if (!v4l2_chip_match_i2c_client(client, ®->match))
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return -EINVAL;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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ret = ov7670_read(sd, reg->reg & 0xff, &val);
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reg->val = val;
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reg->size = 1;
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return ret;
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}
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static int ov7670_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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if (!v4l2_chip_match_i2c_client(client, ®->match))
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return -EINVAL;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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ov7670_write(sd, reg->reg & 0xff, reg->val & 0xff);
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return 0;
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}
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#endif
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_subdev_core_ops ov7670_core_ops = {
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@ -1189,6 +1219,10 @@ static const struct v4l2_subdev_core_ops ov7670_core_ops = {
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.queryctrl = ov7670_queryctrl,
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.reset = ov7670_reset,
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.init = ov7670_init,
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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.g_register = ov7670_g_register,
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.s_register = ov7670_s_register,
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#endif
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};
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static const struct v4l2_subdev_video_ops ov7670_video_ops = {
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