Create all the class controls for the device defined controls.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(216): missing control class for class 00980000
fail: v4l2-test-controls.cpp(216): missing control tclass for class 009a0000
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: FAIL
Signed-off-by: Ricardo Ribalda <[email protected]>
---
drivers/media/usb/uvc/uvc_ctrl.c | 96 ++++++++++++++++++++++++++++++++
drivers/media/usb/uvc/uvcvideo.h | 6 ++
2 files changed, 102 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index b75da65115ef..be0fadaf414c 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -357,6 +357,17 @@ static const struct uvc_control_info uvc_ctrls[] = {
},
};
+static const struct uvc_control_class uvc_control_class[] = {
+ {
+ .id = V4L2_CID_CAMERA_CLASS,
+ .name = "Camera Controls",
+ },
+ {
+ .id = V4L2_CID_USER_CLASS,
+ .name = "User Controls",
+ },
+};
+
static const struct uvc_menu_info power_line_frequency_controls[] = {
{ 0, "Disabled" },
{ 1, "50 Hz" },
@@ -1024,6 +1035,49 @@ static int __uvc_ctrl_get(struct uvc_video_chain *chain,
return 0;
}
+static int __uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
+ u32 found_id)
+{
+ bool find_next = req_id & V4L2_CTRL_FLAG_NEXT_CTRL;
+ unsigned int i;
+
+ req_id &= V4L2_CTRL_ID_MASK;
+
+ for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
+ if (!(chain->ctrl_class_bitmap & BIT(i)))
+ continue;
+ if (!find_next) {
+ if (uvc_control_class[i].id == req_id)
+ return i;
+ continue;
+ }
+ if (uvc_control_class[i].id > req_id &&
+ uvc_control_class[i].id < found_id)
+ return i;
+ }
+
+ return -ENODEV;
+}
+
+static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
+ u32 found_id, struct v4l2_queryctrl *v4l2_ctrl)
+{
+ int idx;
+
+ idx = __uvc_query_v4l2_class(chain, req_id, found_id);
+ if (idx < 0)
+ return -ENODEV;
+
+ memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
+ v4l2_ctrl->id = uvc_control_class[idx].id;
+ strscpy(v4l2_ctrl->name, uvc_control_class[idx].name,
+ sizeof(v4l2_ctrl->name));
+ v4l2_ctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
+ v4l2_ctrl->flags = V4L2_CTRL_FLAG_WRITE_ONLY
+ | V4L2_CTRL_FLAG_READ_ONLY;
+ return 0;
+}
+
static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
struct uvc_control *ctrl,
struct uvc_control_mapping *mapping,
@@ -1127,12 +1181,31 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
if (ret < 0)
return -ERESTARTSYS;
+ /* Check if the ctrl is a know class */
+ if (!(v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL)) {
+ ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl);
+ if (!ret)
+ goto done;
+ }
+
ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);
if (ctrl == NULL) {
ret = -EINVAL;
goto done;
}
+ /*
+ * If we're enumerating control with V4L2_CTRL_FLAG_NEXT_CTRL, check if
+ * a class should be inserted between the previous control and the one
+ * we have just found.
+ */
+ if (v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
+ ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id,
+ v4l2_ctrl);
+ if (!ret)
+ goto done;
+ }
+
ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);
done:
mutex_unlock(&chain->ctrl_mutex);
@@ -1426,6 +1499,11 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
if (ret < 0)
return -ERESTARTSYS;
+ if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {
+ ret = 0;
+ goto done;
+ }
+
ctrl = uvc_find_control(handle->chain, sev->id, &mapping);
if (ctrl == NULL) {
ret = -EINVAL;
@@ -1459,7 +1537,10 @@ static void uvc_ctrl_del_event(struct v4l2_subscribed_event *sev)
struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
mutex_lock(&handle->chain->ctrl_mutex);
+ if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0)
+ goto done;
list_del(&sev->node);
+done:
mutex_unlock(&handle->chain->ctrl_mutex);
}
@@ -1577,6 +1658,9 @@ int uvc_ctrl_get(struct uvc_video_chain *chain,
struct uvc_control *ctrl;
struct uvc_control_mapping *mapping;
+ if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
+ return -EACCES;
+
ctrl = uvc_find_control(chain, xctrl->id, &mapping);
if (ctrl == NULL)
return -EINVAL;
@@ -1596,6 +1680,9 @@ int uvc_ctrl_set(struct uvc_fh *handle,
s32 max;
int ret;
+ if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
+ return -EACCES;
+
ctrl = uvc_find_control(chain, xctrl->id, &mapping);
if (ctrl == NULL)
return -EINVAL;
@@ -2062,6 +2149,7 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
{
struct uvc_control_mapping *map;
unsigned int size;
+ unsigned int i;
/* Most mappings come from static kernel data and need to be duplicated.
* Mappings that come from userspace will be unnecessarily duplicated,
@@ -2085,6 +2173,14 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
if (map->set == NULL)
map->set = uvc_set_le_value;
+ for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
+ if (V4L2_CTRL_ID2WHICH(uvc_control_class[i].id) ==
+ V4L2_CTRL_ID2WHICH(map->id)) {
+ chain->ctrl_class_bitmap |= BIT(i);
+ break;
+ }
+ }
+
list_add_tail(&map->list, &ctrl->info.mappings);
uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
map->name, ctrl->info.entity, ctrl->info.selector);
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 97df5ecd66c9..1f17e4253673 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -262,6 +262,11 @@ struct uvc_control_mapping {
u8 *data);
};
+struct uvc_control_class {
+ u32 id;
+ char name[32];
+};
+
struct uvc_control {
struct uvc_entity *entity;
struct uvc_control_info info;
@@ -475,6 +480,7 @@ struct uvc_video_chain {
struct v4l2_prio_state prio; /* V4L2 priority state */
u32 caps; /* V4L2 chain-wide caps */
+ u8 ctrl_class_bitmap; /* Bitmap of valid classes */
};
struct uvc_stats_frame {
--
2.31.0.rc2.261.g7f71774620-goog
On 15/03/2021 18:36, Ricardo Ribalda wrote:
> Create all the class controls for the device defined controls.
>
> Fixes v4l2-compliance:
> Control ioctls (Input 0):
> fail: v4l2-test-controls.cpp(216): missing control class for class 00980000
> fail: v4l2-test-controls.cpp(216): missing control tclass for class 009a0000
> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: FAIL
>
> Signed-off-by: Ricardo Ribalda <[email protected]>
> ---
> drivers/media/usb/uvc/uvc_ctrl.c | 96 ++++++++++++++++++++++++++++++++
> drivers/media/usb/uvc/uvcvideo.h | 6 ++
> 2 files changed, 102 insertions(+)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index b75da65115ef..be0fadaf414c 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -357,6 +357,17 @@ static const struct uvc_control_info uvc_ctrls[] = {
> },
> };
>
> +static const struct uvc_control_class uvc_control_class[] = {
> + {
> + .id = V4L2_CID_CAMERA_CLASS,
> + .name = "Camera Controls",
> + },
> + {
> + .id = V4L2_CID_USER_CLASS,
> + .name = "User Controls",
I noticed that uvc_ctrl.c has hardcoded strings for the control names and
control menus.
It would be good to drop that from the code and instead use v4l2_ctrl_get_menu()
and v4l2_ctrl_get_name() to obtain the names. It ensures consistent naming and
saves a bit of memory.
This can be done in a separate patch before or after this one.
Regards,
Hans
> + },
> +};
> +
> static const struct uvc_menu_info power_line_frequency_controls[] = {
> { 0, "Disabled" },
> { 1, "50 Hz" },
> @@ -1024,6 +1035,49 @@ static int __uvc_ctrl_get(struct uvc_video_chain *chain,
> return 0;
> }
>
> +static int __uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> + u32 found_id)
> +{
> + bool find_next = req_id & V4L2_CTRL_FLAG_NEXT_CTRL;
> + unsigned int i;
> +
> + req_id &= V4L2_CTRL_ID_MASK;
> +
> + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> + if (!(chain->ctrl_class_bitmap & BIT(i)))
> + continue;
> + if (!find_next) {
> + if (uvc_control_class[i].id == req_id)
> + return i;
> + continue;
> + }
> + if (uvc_control_class[i].id > req_id &&
> + uvc_control_class[i].id < found_id)
> + return i;
> + }
> +
> + return -ENODEV;
> +}
> +
> +static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> + u32 found_id, struct v4l2_queryctrl *v4l2_ctrl)
> +{
> + int idx;
> +
> + idx = __uvc_query_v4l2_class(chain, req_id, found_id);
> + if (idx < 0)
> + return -ENODEV;
> +
> + memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
> + v4l2_ctrl->id = uvc_control_class[idx].id;
> + strscpy(v4l2_ctrl->name, uvc_control_class[idx].name,
> + sizeof(v4l2_ctrl->name));
> + v4l2_ctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
> + v4l2_ctrl->flags = V4L2_CTRL_FLAG_WRITE_ONLY
> + | V4L2_CTRL_FLAG_READ_ONLY;
> + return 0;
> +}
> +
> static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> struct uvc_control *ctrl,
> struct uvc_control_mapping *mapping,
> @@ -1127,12 +1181,31 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> if (ret < 0)
> return -ERESTARTSYS;
>
> + /* Check if the ctrl is a know class */
> + if (!(v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL)) {
> + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl);
> + if (!ret)
> + goto done;
> + }
> +
> ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);
> if (ctrl == NULL) {
> ret = -EINVAL;
> goto done;
> }
>
> + /*
> + * If we're enumerating control with V4L2_CTRL_FLAG_NEXT_CTRL, check if
> + * a class should be inserted between the previous control and the one
> + * we have just found.
> + */
> + if (v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
> + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id,
> + v4l2_ctrl);
> + if (!ret)
> + goto done;
> + }
> +
> ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);
> done:
> mutex_unlock(&chain->ctrl_mutex);
> @@ -1426,6 +1499,11 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
> if (ret < 0)
> return -ERESTARTSYS;
>
> + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {
> + ret = 0;
> + goto done;
> + }
> +
> ctrl = uvc_find_control(handle->chain, sev->id, &mapping);
> if (ctrl == NULL) {
> ret = -EINVAL;
> @@ -1459,7 +1537,10 @@ static void uvc_ctrl_del_event(struct v4l2_subscribed_event *sev)
> struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
>
> mutex_lock(&handle->chain->ctrl_mutex);
> + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0)
> + goto done;
> list_del(&sev->node);
> +done:
> mutex_unlock(&handle->chain->ctrl_mutex);
> }
>
> @@ -1577,6 +1658,9 @@ int uvc_ctrl_get(struct uvc_video_chain *chain,
> struct uvc_control *ctrl;
> struct uvc_control_mapping *mapping;
>
> + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> + return -EACCES;
> +
> ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> if (ctrl == NULL)
> return -EINVAL;
> @@ -1596,6 +1680,9 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> s32 max;
> int ret;
>
> + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> + return -EACCES;
> +
> ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> if (ctrl == NULL)
> return -EINVAL;
> @@ -2062,6 +2149,7 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> {
> struct uvc_control_mapping *map;
> unsigned int size;
> + unsigned int i;
>
> /* Most mappings come from static kernel data and need to be duplicated.
> * Mappings that come from userspace will be unnecessarily duplicated,
> @@ -2085,6 +2173,14 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> if (map->set == NULL)
> map->set = uvc_set_le_value;
>
> + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> + if (V4L2_CTRL_ID2WHICH(uvc_control_class[i].id) ==
> + V4L2_CTRL_ID2WHICH(map->id)) {
> + chain->ctrl_class_bitmap |= BIT(i);
> + break;
> + }
> + }
> +
> list_add_tail(&map->list, &ctrl->info.mappings);
> uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
> map->name, ctrl->info.entity, ctrl->info.selector);
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index 97df5ecd66c9..1f17e4253673 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -262,6 +262,11 @@ struct uvc_control_mapping {
> u8 *data);
> };
>
> +struct uvc_control_class {
> + u32 id;
> + char name[32];
> +};
> +
> struct uvc_control {
> struct uvc_entity *entity;
> struct uvc_control_info info;
> @@ -475,6 +480,7 @@ struct uvc_video_chain {
>
> struct v4l2_prio_state prio; /* V4L2 priority state */
> u32 caps; /* V4L2 chain-wide caps */
> + u8 ctrl_class_bitmap; /* Bitmap of valid classes */
> };
>
> struct uvc_stats_frame {
>
Hi Hans,
On Tue, Mar 16, 2021 at 09:37:07AM +0100, Hans Verkuil wrote:
> On 15/03/2021 18:36, Ricardo Ribalda wrote:
> > Create all the class controls for the device defined controls.
> >
> > Fixes v4l2-compliance:
> > Control ioctls (Input 0):
> > fail: v4l2-test-controls.cpp(216): missing control class for class 00980000
> > fail: v4l2-test-controls.cpp(216): missing control tclass for class 009a0000
> > test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: FAIL
> >
> > Signed-off-by: Ricardo Ribalda <[email protected]>
> > ---
> > drivers/media/usb/uvc/uvc_ctrl.c | 96 ++++++++++++++++++++++++++++++++
> > drivers/media/usb/uvc/uvcvideo.h | 6 ++
> > 2 files changed, 102 insertions(+)
> >
> > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> > index b75da65115ef..be0fadaf414c 100644
> > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > @@ -357,6 +357,17 @@ static const struct uvc_control_info uvc_ctrls[] = {
> > },
> > };
> >
> > +static const struct uvc_control_class uvc_control_class[] = {
> > + {
> > + .id = V4L2_CID_CAMERA_CLASS,
> > + .name = "Camera Controls",
> > + },
> > + {
> > + .id = V4L2_CID_USER_CLASS,
> > + .name = "User Controls",
>
> I noticed that uvc_ctrl.c has hardcoded strings for the control names and
> control menus.
>
> It would be good to drop that from the code and instead use v4l2_ctrl_get_menu()
> and v4l2_ctrl_get_name() to obtain the names. It ensures consistent naming and
> saves a bit of memory.
>
> This can be done in a separate patch before or after this one.
https://git.linuxtv.org/pinchartl/media.git/commit/?h=uvc/dev&id=16a7d79d67cdd06a448d8c4c20e270d1c21828b1
It's work in progress, the part that bothers me is the changes in
uvc_parse_format(). We lose the human-readable name in a debug message,
but maybe more importantly, we lose the distinction between different DV
formats. Maybe it's not a big deal.
> > + },
> > +};
> > +
> > static const struct uvc_menu_info power_line_frequency_controls[] = {
> > { 0, "Disabled" },
> > { 1, "50 Hz" },
> > @@ -1024,6 +1035,49 @@ static int __uvc_ctrl_get(struct uvc_video_chain *chain,
> > return 0;
> > }
> >
> > +static int __uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> > + u32 found_id)
> > +{
> > + bool find_next = req_id & V4L2_CTRL_FLAG_NEXT_CTRL;
> > + unsigned int i;
> > +
> > + req_id &= V4L2_CTRL_ID_MASK;
> > +
> > + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> > + if (!(chain->ctrl_class_bitmap & BIT(i)))
> > + continue;
> > + if (!find_next) {
> > + if (uvc_control_class[i].id == req_id)
> > + return i;
> > + continue;
> > + }
> > + if (uvc_control_class[i].id > req_id &&
> > + uvc_control_class[i].id < found_id)
> > + return i;
> > + }
> > +
> > + return -ENODEV;
> > +}
> > +
> > +static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> > + u32 found_id, struct v4l2_queryctrl *v4l2_ctrl)
> > +{
> > + int idx;
> > +
> > + idx = __uvc_query_v4l2_class(chain, req_id, found_id);
> > + if (idx < 0)
> > + return -ENODEV;
> > +
> > + memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
> > + v4l2_ctrl->id = uvc_control_class[idx].id;
> > + strscpy(v4l2_ctrl->name, uvc_control_class[idx].name,
> > + sizeof(v4l2_ctrl->name));
> > + v4l2_ctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
> > + v4l2_ctrl->flags = V4L2_CTRL_FLAG_WRITE_ONLY
> > + | V4L2_CTRL_FLAG_READ_ONLY;
> > + return 0;
> > +}
> > +
> > static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > struct uvc_control *ctrl,
> > struct uvc_control_mapping *mapping,
> > @@ -1127,12 +1181,31 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > if (ret < 0)
> > return -ERESTARTSYS;
> >
> > + /* Check if the ctrl is a know class */
> > + if (!(v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL)) {
> > + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl);
> > + if (!ret)
> > + goto done;
> > + }
> > +
> > ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);
> > if (ctrl == NULL) {
> > ret = -EINVAL;
> > goto done;
> > }
> >
> > + /*
> > + * If we're enumerating control with V4L2_CTRL_FLAG_NEXT_CTRL, check if
> > + * a class should be inserted between the previous control and the one
> > + * we have just found.
> > + */
> > + if (v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
> > + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id,
> > + v4l2_ctrl);
> > + if (!ret)
> > + goto done;
> > + }
> > +
> > ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);
> > done:
> > mutex_unlock(&chain->ctrl_mutex);
> > @@ -1426,6 +1499,11 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
> > if (ret < 0)
> > return -ERESTARTSYS;
> >
> > + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {
> > + ret = 0;
> > + goto done;
> > + }
> > +
> > ctrl = uvc_find_control(handle->chain, sev->id, &mapping);
> > if (ctrl == NULL) {
> > ret = -EINVAL;
> > @@ -1459,7 +1537,10 @@ static void uvc_ctrl_del_event(struct v4l2_subscribed_event *sev)
> > struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
> >
> > mutex_lock(&handle->chain->ctrl_mutex);
> > + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0)
> > + goto done;
> > list_del(&sev->node);
> > +done:
> > mutex_unlock(&handle->chain->ctrl_mutex);
> > }
> >
> > @@ -1577,6 +1658,9 @@ int uvc_ctrl_get(struct uvc_video_chain *chain,
> > struct uvc_control *ctrl;
> > struct uvc_control_mapping *mapping;
> >
> > + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> > + return -EACCES;
> > +
> > ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> > if (ctrl == NULL)
> > return -EINVAL;
> > @@ -1596,6 +1680,9 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> > s32 max;
> > int ret;
> >
> > + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> > + return -EACCES;
> > +
> > ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> > if (ctrl == NULL)
> > return -EINVAL;
> > @@ -2062,6 +2149,7 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> > {
> > struct uvc_control_mapping *map;
> > unsigned int size;
> > + unsigned int i;
> >
> > /* Most mappings come from static kernel data and need to be duplicated.
> > * Mappings that come from userspace will be unnecessarily duplicated,
> > @@ -2085,6 +2173,14 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> > if (map->set == NULL)
> > map->set = uvc_set_le_value;
> >
> > + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> > + if (V4L2_CTRL_ID2WHICH(uvc_control_class[i].id) ==
> > + V4L2_CTRL_ID2WHICH(map->id)) {
> > + chain->ctrl_class_bitmap |= BIT(i);
> > + break;
> > + }
> > + }
> > +
> > list_add_tail(&map->list, &ctrl->info.mappings);
> > uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
> > map->name, ctrl->info.entity, ctrl->info.selector);
> > diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> > index 97df5ecd66c9..1f17e4253673 100644
> > --- a/drivers/media/usb/uvc/uvcvideo.h
> > +++ b/drivers/media/usb/uvc/uvcvideo.h
> > @@ -262,6 +262,11 @@ struct uvc_control_mapping {
> > u8 *data);
> > };
> >
> > +struct uvc_control_class {
> > + u32 id;
> > + char name[32];
> > +};
> > +
> > struct uvc_control {
> > struct uvc_entity *entity;
> > struct uvc_control_info info;
> > @@ -475,6 +480,7 @@ struct uvc_video_chain {
> >
> > struct v4l2_prio_state prio; /* V4L2 priority state */
> > u32 caps; /* V4L2 chain-wide caps */
> > + u8 ctrl_class_bitmap; /* Bitmap of valid classes */
> > };
> >
> > struct uvc_stats_frame {
> >
>
--
Regards,
Laurent Pinchart
Hi Laurent
On Tue, Mar 16, 2021 at 11:08 AM Laurent Pinchart
<[email protected]> wrote:
>
> Hi Hans,
>
> On Tue, Mar 16, 2021 at 09:37:07AM +0100, Hans Verkuil wrote:
> > On 15/03/2021 18:36, Ricardo Ribalda wrote:
> > > Create all the class controls for the device defined controls.
> > >
> > > Fixes v4l2-compliance:
> > > Control ioctls (Input 0):
> > > fail: v4l2-test-controls.cpp(216): missing control class for class 00980000
> > > fail: v4l2-test-controls.cpp(216): missing control tclass for class 009a0000
> > > test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: FAIL
> > >
> > > Signed-off-by: Ricardo Ribalda <[email protected]>
> > > ---
> > > drivers/media/usb/uvc/uvc_ctrl.c | 96 ++++++++++++++++++++++++++++++++
> > > drivers/media/usb/uvc/uvcvideo.h | 6 ++
> > > 2 files changed, 102 insertions(+)
> > >
> > > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> > > index b75da65115ef..be0fadaf414c 100644
> > > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > > @@ -357,6 +357,17 @@ static const struct uvc_control_info uvc_ctrls[] = {
> > > },
> > > };
> > >
> > > +static const struct uvc_control_class uvc_control_class[] = {
> > > + {
> > > + .id = V4L2_CID_CAMERA_CLASS,
> > > + .name = "Camera Controls",
> > > + },
> > > + {
> > > + .id = V4L2_CID_USER_CLASS,
> > > + .name = "User Controls",
> >
> > I noticed that uvc_ctrl.c has hardcoded strings for the control names and
> > control menus.
> >
> > It would be good to drop that from the code and instead use v4l2_ctrl_get_menu()
> > and v4l2_ctrl_get_name() to obtain the names. It ensures consistent naming and
> > saves a bit of memory.
> >
> > This can be done in a separate patch before or after this one.
>
> https://git.linuxtv.org/pinchartl/media.git/commit/?h=uvc/dev&id=16a7d79d67cdd06a448d8c4c20e270d1c21828b1
>
> It's work in progress, the part that bothers me is the changes in
> uvc_parse_format(). We lose the human-readable name in a debug message,
> but maybe more importantly, we lose the distinction between different DV
> formats. Maybe it's not a big deal.
That patch is for format descriptions. If you haven't started yet I
can implement the change for the control names.
Thanks!
>
> > > + },
> > > +};
> > > +
> > > static const struct uvc_menu_info power_line_frequency_controls[] = {
> > > { 0, "Disabled" },
> > > { 1, "50 Hz" },
> > > @@ -1024,6 +1035,49 @@ static int __uvc_ctrl_get(struct uvc_video_chain *chain,
> > > return 0;
> > > }
> > >
> > > +static int __uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> > > + u32 found_id)
> > > +{
> > > + bool find_next = req_id & V4L2_CTRL_FLAG_NEXT_CTRL;
> > > + unsigned int i;
> > > +
> > > + req_id &= V4L2_CTRL_ID_MASK;
> > > +
> > > + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> > > + if (!(chain->ctrl_class_bitmap & BIT(i)))
> > > + continue;
> > > + if (!find_next) {
> > > + if (uvc_control_class[i].id == req_id)
> > > + return i;
> > > + continue;
> > > + }
> > > + if (uvc_control_class[i].id > req_id &&
> > > + uvc_control_class[i].id < found_id)
> > > + return i;
> > > + }
> > > +
> > > + return -ENODEV;
> > > +}
> > > +
> > > +static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> > > + u32 found_id, struct v4l2_queryctrl *v4l2_ctrl)
> > > +{
> > > + int idx;
> > > +
> > > + idx = __uvc_query_v4l2_class(chain, req_id, found_id);
> > > + if (idx < 0)
> > > + return -ENODEV;
> > > +
> > > + memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
> > > + v4l2_ctrl->id = uvc_control_class[idx].id;
> > > + strscpy(v4l2_ctrl->name, uvc_control_class[idx].name,
> > > + sizeof(v4l2_ctrl->name));
> > > + v4l2_ctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
> > > + v4l2_ctrl->flags = V4L2_CTRL_FLAG_WRITE_ONLY
> > > + | V4L2_CTRL_FLAG_READ_ONLY;
> > > + return 0;
> > > +}
> > > +
> > > static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > > struct uvc_control *ctrl,
> > > struct uvc_control_mapping *mapping,
> > > @@ -1127,12 +1181,31 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > > if (ret < 0)
> > > return -ERESTARTSYS;
> > >
> > > + /* Check if the ctrl is a know class */
> > > + if (!(v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL)) {
> > > + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl);
> > > + if (!ret)
> > > + goto done;
> > > + }
> > > +
> > > ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);
> > > if (ctrl == NULL) {
> > > ret = -EINVAL;
> > > goto done;
> > > }
> > >
> > > + /*
> > > + * If we're enumerating control with V4L2_CTRL_FLAG_NEXT_CTRL, check if
> > > + * a class should be inserted between the previous control and the one
> > > + * we have just found.
> > > + */
> > > + if (v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
> > > + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id,
> > > + v4l2_ctrl);
> > > + if (!ret)
> > > + goto done;
> > > + }
> > > +
> > > ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);
> > > done:
> > > mutex_unlock(&chain->ctrl_mutex);
> > > @@ -1426,6 +1499,11 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
> > > if (ret < 0)
> > > return -ERESTARTSYS;
> > >
> > > + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {
> > > + ret = 0;
> > > + goto done;
> > > + }
> > > +
> > > ctrl = uvc_find_control(handle->chain, sev->id, &mapping);
> > > if (ctrl == NULL) {
> > > ret = -EINVAL;
> > > @@ -1459,7 +1537,10 @@ static void uvc_ctrl_del_event(struct v4l2_subscribed_event *sev)
> > > struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
> > >
> > > mutex_lock(&handle->chain->ctrl_mutex);
> > > + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0)
> > > + goto done;
> > > list_del(&sev->node);
> > > +done:
> > > mutex_unlock(&handle->chain->ctrl_mutex);
> > > }
> > >
> > > @@ -1577,6 +1658,9 @@ int uvc_ctrl_get(struct uvc_video_chain *chain,
> > > struct uvc_control *ctrl;
> > > struct uvc_control_mapping *mapping;
> > >
> > > + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> > > + return -EACCES;
> > > +
> > > ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> > > if (ctrl == NULL)
> > > return -EINVAL;
> > > @@ -1596,6 +1680,9 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> > > s32 max;
> > > int ret;
> > >
> > > + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> > > + return -EACCES;
> > > +
> > > ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> > > if (ctrl == NULL)
> > > return -EINVAL;
> > > @@ -2062,6 +2149,7 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> > > {
> > > struct uvc_control_mapping *map;
> > > unsigned int size;
> > > + unsigned int i;
> > >
> > > /* Most mappings come from static kernel data and need to be duplicated.
> > > * Mappings that come from userspace will be unnecessarily duplicated,
> > > @@ -2085,6 +2173,14 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> > > if (map->set == NULL)
> > > map->set = uvc_set_le_value;
> > >
> > > + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> > > + if (V4L2_CTRL_ID2WHICH(uvc_control_class[i].id) ==
> > > + V4L2_CTRL_ID2WHICH(map->id)) {
> > > + chain->ctrl_class_bitmap |= BIT(i);
> > > + break;
> > > + }
> > > + }
> > > +
> > > list_add_tail(&map->list, &ctrl->info.mappings);
> > > uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
> > > map->name, ctrl->info.entity, ctrl->info.selector);
> > > diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> > > index 97df5ecd66c9..1f17e4253673 100644
> > > --- a/drivers/media/usb/uvc/uvcvideo.h
> > > +++ b/drivers/media/usb/uvc/uvcvideo.h
> > > @@ -262,6 +262,11 @@ struct uvc_control_mapping {
> > > u8 *data);
> > > };
> > >
> > > +struct uvc_control_class {
> > > + u32 id;
> > > + char name[32];
> > > +};
> > > +
> > > struct uvc_control {
> > > struct uvc_entity *entity;
> > > struct uvc_control_info info;
> > > @@ -475,6 +480,7 @@ struct uvc_video_chain {
> > >
> > > struct v4l2_prio_state prio; /* V4L2 priority state */
> > > u32 caps; /* V4L2 chain-wide caps */
> > > + u8 ctrl_class_bitmap; /* Bitmap of valid classes */
> > > };
> > >
> > > struct uvc_stats_frame {
> > >
> >
>
> --
> Regards,
>
> Laurent Pinchart
--
Ricardo Ribalda
Hi Ricardo,
On Tue, Mar 16, 2021 at 11:12:57AM +0100, Ricardo Ribalda wrote:
> On Tue, Mar 16, 2021 at 11:08 AM Laurent Pinchart wrote:
> > On Tue, Mar 16, 2021 at 09:37:07AM +0100, Hans Verkuil wrote:
> > > On 15/03/2021 18:36, Ricardo Ribalda wrote:
> > > > Create all the class controls for the device defined controls.
> > > >
> > > > Fixes v4l2-compliance:
> > > > Control ioctls (Input 0):
> > > > fail: v4l2-test-controls.cpp(216): missing control class for class 00980000
> > > > fail: v4l2-test-controls.cpp(216): missing control tclass for class 009a0000
> > > > test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: FAIL
> > > >
> > > > Signed-off-by: Ricardo Ribalda <[email protected]>
> > > > ---
> > > > drivers/media/usb/uvc/uvc_ctrl.c | 96 ++++++++++++++++++++++++++++++++
> > > > drivers/media/usb/uvc/uvcvideo.h | 6 ++
> > > > 2 files changed, 102 insertions(+)
> > > >
> > > > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> > > > index b75da65115ef..be0fadaf414c 100644
> > > > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > > > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > > > @@ -357,6 +357,17 @@ static const struct uvc_control_info uvc_ctrls[] = {
> > > > },
> > > > };
> > > >
> > > > +static const struct uvc_control_class uvc_control_class[] = {
> > > > + {
> > > > + .id = V4L2_CID_CAMERA_CLASS,
> > > > + .name = "Camera Controls",
> > > > + },
> > > > + {
> > > > + .id = V4L2_CID_USER_CLASS,
> > > > + .name = "User Controls",
> > >
> > > I noticed that uvc_ctrl.c has hardcoded strings for the control names and
> > > control menus.
> > >
> > > It would be good to drop that from the code and instead use v4l2_ctrl_get_menu()
> > > and v4l2_ctrl_get_name() to obtain the names. It ensures consistent naming and
> > > saves a bit of memory.
> > >
> > > This can be done in a separate patch before or after this one.
> >
> > https://git.linuxtv.org/pinchartl/media.git/commit/?h=uvc/dev&id=16a7d79d67cdd06a448d8c4c20e270d1c21828b1
> >
> > It's work in progress, the part that bothers me is the changes in
> > uvc_parse_format(). We lose the human-readable name in a debug message,
> > but maybe more importantly, we lose the distinction between different DV
> > formats. Maybe it's not a big deal.
>
> That patch is for format descriptions. If you haven't started yet I
> can implement the change for the control names.
I should try to wake up before sending e-mails, to avoid making a fool
of myself :-S
I haven't done any work on control names in this area.
> > > > + },
> > > > +};
> > > > +
> > > > static const struct uvc_menu_info power_line_frequency_controls[] = {
> > > > { 0, "Disabled" },
> > > > { 1, "50 Hz" },
> > > > @@ -1024,6 +1035,49 @@ static int __uvc_ctrl_get(struct uvc_video_chain *chain,
> > > > return 0;
> > > > }
> > > >
> > > > +static int __uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> > > > + u32 found_id)
> > > > +{
> > > > + bool find_next = req_id & V4L2_CTRL_FLAG_NEXT_CTRL;
> > > > + unsigned int i;
> > > > +
> > > > + req_id &= V4L2_CTRL_ID_MASK;
> > > > +
> > > > + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> > > > + if (!(chain->ctrl_class_bitmap & BIT(i)))
> > > > + continue;
> > > > + if (!find_next) {
> > > > + if (uvc_control_class[i].id == req_id)
> > > > + return i;
> > > > + continue;
> > > > + }
> > > > + if (uvc_control_class[i].id > req_id &&
> > > > + uvc_control_class[i].id < found_id)
> > > > + return i;
> > > > + }
> > > > +
> > > > + return -ENODEV;
> > > > +}
> > > > +
> > > > +static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
> > > > + u32 found_id, struct v4l2_queryctrl *v4l2_ctrl)
> > > > +{
> > > > + int idx;
> > > > +
> > > > + idx = __uvc_query_v4l2_class(chain, req_id, found_id);
> > > > + if (idx < 0)
> > > > + return -ENODEV;
> > > > +
> > > > + memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
> > > > + v4l2_ctrl->id = uvc_control_class[idx].id;
> > > > + strscpy(v4l2_ctrl->name, uvc_control_class[idx].name,
> > > > + sizeof(v4l2_ctrl->name));
> > > > + v4l2_ctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
> > > > + v4l2_ctrl->flags = V4L2_CTRL_FLAG_WRITE_ONLY
> > > > + | V4L2_CTRL_FLAG_READ_ONLY;
> > > > + return 0;
> > > > +}
> > > > +
> > > > static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > > > struct uvc_control *ctrl,
> > > > struct uvc_control_mapping *mapping,
> > > > @@ -1127,12 +1181,31 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > > > if (ret < 0)
> > > > return -ERESTARTSYS;
> > > >
> > > > + /* Check if the ctrl is a know class */
> > > > + if (!(v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL)) {
> > > > + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl);
> > > > + if (!ret)
> > > > + goto done;
> > > > + }
> > > > +
> > > > ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);
> > > > if (ctrl == NULL) {
> > > > ret = -EINVAL;
> > > > goto done;
> > > > }
> > > >
> > > > + /*
> > > > + * If we're enumerating control with V4L2_CTRL_FLAG_NEXT_CTRL, check if
> > > > + * a class should be inserted between the previous control and the one
> > > > + * we have just found.
> > > > + */
> > > > + if (v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
> > > > + ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id,
> > > > + v4l2_ctrl);
> > > > + if (!ret)
> > > > + goto done;
> > > > + }
> > > > +
> > > > ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);
> > > > done:
> > > > mutex_unlock(&chain->ctrl_mutex);
> > > > @@ -1426,6 +1499,11 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
> > > > if (ret < 0)
> > > > return -ERESTARTSYS;
> > > >
> > > > + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {
> > > > + ret = 0;
> > > > + goto done;
> > > > + }
> > > > +
> > > > ctrl = uvc_find_control(handle->chain, sev->id, &mapping);
> > > > if (ctrl == NULL) {
> > > > ret = -EINVAL;
> > > > @@ -1459,7 +1537,10 @@ static void uvc_ctrl_del_event(struct v4l2_subscribed_event *sev)
> > > > struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
> > > >
> > > > mutex_lock(&handle->chain->ctrl_mutex);
> > > > + if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0)
> > > > + goto done;
> > > > list_del(&sev->node);
> > > > +done:
> > > > mutex_unlock(&handle->chain->ctrl_mutex);
> > > > }
> > > >
> > > > @@ -1577,6 +1658,9 @@ int uvc_ctrl_get(struct uvc_video_chain *chain,
> > > > struct uvc_control *ctrl;
> > > > struct uvc_control_mapping *mapping;
> > > >
> > > > + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> > > > + return -EACCES;
> > > > +
> > > > ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> > > > if (ctrl == NULL)
> > > > return -EINVAL;
> > > > @@ -1596,6 +1680,9 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> > > > s32 max;
> > > > int ret;
> > > >
> > > > + if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
> > > > + return -EACCES;
> > > > +
> > > > ctrl = uvc_find_control(chain, xctrl->id, &mapping);
> > > > if (ctrl == NULL)
> > > > return -EINVAL;
> > > > @@ -2062,6 +2149,7 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> > > > {
> > > > struct uvc_control_mapping *map;
> > > > unsigned int size;
> > > > + unsigned int i;
> > > >
> > > > /* Most mappings come from static kernel data and need to be duplicated.
> > > > * Mappings that come from userspace will be unnecessarily duplicated,
> > > > @@ -2085,6 +2173,14 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
> > > > if (map->set == NULL)
> > > > map->set = uvc_set_le_value;
> > > >
> > > > + for (i = 0; i < ARRAY_SIZE(uvc_control_class); i++) {
> > > > + if (V4L2_CTRL_ID2WHICH(uvc_control_class[i].id) ==
> > > > + V4L2_CTRL_ID2WHICH(map->id)) {
> > > > + chain->ctrl_class_bitmap |= BIT(i);
> > > > + break;
> > > > + }
> > > > + }
> > > > +
> > > > list_add_tail(&map->list, &ctrl->info.mappings);
> > > > uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
> > > > map->name, ctrl->info.entity, ctrl->info.selector);
> > > > diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> > > > index 97df5ecd66c9..1f17e4253673 100644
> > > > --- a/drivers/media/usb/uvc/uvcvideo.h
> > > > +++ b/drivers/media/usb/uvc/uvcvideo.h
> > > > @@ -262,6 +262,11 @@ struct uvc_control_mapping {
> > > > u8 *data);
> > > > };
> > > >
> > > > +struct uvc_control_class {
> > > > + u32 id;
> > > > + char name[32];
> > > > +};
> > > > +
> > > > struct uvc_control {
> > > > struct uvc_entity *entity;
> > > > struct uvc_control_info info;
> > > > @@ -475,6 +480,7 @@ struct uvc_video_chain {
> > > >
> > > > struct v4l2_prio_state prio; /* V4L2 priority state */
> > > > u32 caps; /* V4L2 chain-wide caps */
> > > > + u8 ctrl_class_bitmap; /* Bitmap of valid classes */
> > > > };
> > > >
> > > > struct uvc_stats_frame {
> > > >
--
Regards,
Laurent Pinchart