diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2010-04-25 23:23:24 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-19 19:58:43 +0400 |
| commit | a90ef69c1f67319ddbba0170767c660c7fb5d4c9 (patch) | |
| tree | 80ef25cdc97a38870e0c6145b3acbd0bf1be05bd /drivers/media/video/uvc | |
| parent | 61421206833a4085d9bdf35b2b84cd9a67dfdfac (diff) | |
| download | linux-a90ef69c1f67319ddbba0170767c660c7fb5d4c9.tar.xz | |
V4L/DVB: uvcvideo: Flag relative controls as write-only
The UVC relative controls (exposure time, iris, focus, zoom, pan/tilt)
are write-only (despite the UVC specification stating that the GET_CUR
request is mandatory). Mark the controls as such, and report the related
V4L2 controls V4L2_CTRL_FLAG_WRITE_ONLY.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/uvc')
| -rw-r--r-- | drivers/media/video/uvc/uvc_ctrl.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c index 5d6d7bda2336..2703c9524396 100644 --- a/drivers/media/video/uvc/uvc_ctrl.c +++ b/drivers/media/video/uvc/uvc_ctrl.c @@ -217,8 +217,7 @@ static struct uvc_control_info uvc_ctrls[] = { .selector = UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL, .index = 4, .size = 1, - .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR - | UVC_CONTROL_RESTORE, + .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_RESTORE, }, { .entity = UVC_GUID_UVC_CAMERA, @@ -233,8 +232,9 @@ static struct uvc_control_info uvc_ctrls[] = { .selector = UVC_CT_FOCUS_RELATIVE_CONTROL, .index = 6, .size = 2, - .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE - | UVC_CONTROL_AUTO_UPDATE, + .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_MIN + | UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES + | UVC_CONTROL_GET_DEF | UVC_CONTROL_AUTO_UPDATE, }, { .entity = UVC_GUID_UVC_CAMERA, @@ -249,8 +249,7 @@ static struct uvc_control_info uvc_ctrls[] = { .selector = UVC_CT_IRIS_RELATIVE_CONTROL, .index = 8, .size = 1, - .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_CUR - | UVC_CONTROL_AUTO_UPDATE, + .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_AUTO_UPDATE, }, { .entity = UVC_GUID_UVC_CAMERA, @@ -265,8 +264,9 @@ static struct uvc_control_info uvc_ctrls[] = { .selector = UVC_CT_ZOOM_RELATIVE_CONTROL, .index = 10, .size = 3, - .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE - | UVC_CONTROL_AUTO_UPDATE, + .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_MIN + | UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES + | UVC_CONTROL_GET_DEF | UVC_CONTROL_AUTO_UPDATE, }, { .entity = UVC_GUID_UVC_CAMERA, @@ -281,8 +281,9 @@ static struct uvc_control_info uvc_ctrls[] = { .selector = UVC_CT_PANTILT_RELATIVE_CONTROL, .index = 12, .size = 4, - .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE - | UVC_CONTROL_AUTO_UPDATE, + .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_MIN + | UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES + | UVC_CONTROL_GET_DEF | UVC_CONTROL_AUTO_UPDATE, }, { .entity = UVC_GUID_UVC_CAMERA, @@ -297,8 +298,9 @@ static struct uvc_control_info uvc_ctrls[] = { .selector = UVC_CT_ROLL_RELATIVE_CONTROL, .index = 14, .size = 2, - .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_RANGE - | UVC_CONTROL_AUTO_UPDATE, + .flags = UVC_CONTROL_SET_CUR | UVC_CONTROL_GET_MIN + | UVC_CONTROL_GET_MAX | UVC_CONTROL_GET_RES + | UVC_CONTROL_GET_DEF | UVC_CONTROL_AUTO_UPDATE, }, { .entity = UVC_GUID_UVC_CAMERA, @@ -842,6 +844,8 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, strlcpy(v4l2_ctrl->name, mapping->name, sizeof v4l2_ctrl->name); v4l2_ctrl->flags = 0; + if (!(ctrl->info->flags & UVC_CONTROL_GET_CUR)) + v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY; if (!(ctrl->info->flags & UVC_CONTROL_SET_CUR)) v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; |