[PATCH v9 13/22] media: uvcvideo: Use control names from framework
From: Ricardo Ribalda
Date: Fri Mar 26 2021 - 05:59:59 EST
The framework already contains a map of IDs to names, lets use it when
possible.
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Suggested-by: Hans Verkuil <hverkuil@xxxxxxxxx>
---
drivers/media/usb/uvc/uvc_ctrl.c | 57 ++++++++++++--------------------
drivers/media/usb/uvc/uvc_v4l2.c | 8 ++++-
drivers/media/usb/uvc/uvcvideo.h | 2 +-
3 files changed, 30 insertions(+), 37 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index ba14733db757..929e70dff11a 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -436,7 +436,6 @@ static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping,
static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
{
.id = V4L2_CID_BRIGHTNESS,
- .name = "Brightness",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_BRIGHTNESS_CONTROL,
.size = 16,
@@ -446,7 +445,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_CONTRAST,
- .name = "Contrast",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_CONTRAST_CONTROL,
.size = 16,
@@ -456,7 +454,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_HUE,
- .name = "Hue",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_HUE_CONTROL,
.size = 16,
@@ -468,7 +465,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_SATURATION,
- .name = "Saturation",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_SATURATION_CONTROL,
.size = 16,
@@ -478,7 +474,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_SHARPNESS,
- .name = "Sharpness",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_SHARPNESS_CONTROL,
.size = 16,
@@ -488,7 +483,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_GAMMA,
- .name = "Gamma",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_GAMMA_CONTROL,
.size = 16,
@@ -498,7 +492,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_BACKLIGHT_COMPENSATION,
- .name = "Backlight Compensation",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_BACKLIGHT_COMPENSATION_CONTROL,
.size = 16,
@@ -508,7 +501,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_GAIN,
- .name = "Gain",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_GAIN_CONTROL,
.size = 16,
@@ -518,7 +510,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_POWER_LINE_FREQUENCY,
- .name = "Power Line Frequency",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
.size = 2,
@@ -530,7 +521,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_HUE_AUTO,
- .name = "Hue, Auto",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_HUE_AUTO_CONTROL,
.size = 1,
@@ -541,7 +531,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_EXPOSURE_AUTO,
- .name = "Exposure, Auto",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_AE_MODE_CONTROL,
.size = 4,
@@ -554,7 +543,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_EXPOSURE_AUTO_PRIORITY,
- .name = "Exposure, Auto Priority",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_AE_PRIORITY_CONTROL,
.size = 1,
@@ -564,7 +552,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_EXPOSURE_ABSOLUTE,
- .name = "Exposure (Absolute)",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL,
.size = 32,
@@ -576,7 +563,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_AUTO_WHITE_BALANCE,
- .name = "White Balance Temperature, Auto",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL,
.size = 1,
@@ -587,7 +573,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
- .name = "White Balance Temperature",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL,
.size = 16,
@@ -599,7 +584,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_AUTO_WHITE_BALANCE,
- .name = "White Balance Component, Auto",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL,
.size = 1,
@@ -611,7 +595,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_BLUE_BALANCE,
- .name = "White Balance Blue Component",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL,
.size = 16,
@@ -623,7 +606,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_RED_BALANCE,
- .name = "White Balance Red Component",
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL,
.size = 16,
@@ -635,7 +617,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_FOCUS_ABSOLUTE,
- .name = "Focus (absolute)",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_FOCUS_ABSOLUTE_CONTROL,
.size = 16,
@@ -647,7 +628,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_FOCUS_AUTO,
- .name = "Focus, Auto",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_FOCUS_AUTO_CONTROL,
.size = 1,
@@ -658,7 +638,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_IRIS_ABSOLUTE,
- .name = "Iris, Absolute",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_IRIS_ABSOLUTE_CONTROL,
.size = 16,
@@ -668,7 +647,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_IRIS_RELATIVE,
- .name = "Iris, Relative",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_IRIS_RELATIVE_CONTROL,
.size = 8,
@@ -678,7 +656,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_ZOOM_ABSOLUTE,
- .name = "Zoom, Absolute",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_ZOOM_ABSOLUTE_CONTROL,
.size = 16,
@@ -688,7 +665,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_ZOOM_CONTINUOUS,
- .name = "Zoom, Continuous",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_ZOOM_RELATIVE_CONTROL,
.size = 0,
@@ -700,7 +676,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_PAN_ABSOLUTE,
- .name = "Pan (Absolute)",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_PANTILT_ABSOLUTE_CONTROL,
.size = 32,
@@ -710,7 +685,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_TILT_ABSOLUTE,
- .name = "Tilt (Absolute)",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_PANTILT_ABSOLUTE_CONTROL,
.size = 32,
@@ -720,7 +694,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_PAN_SPEED,
- .name = "Pan (Speed)",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
.size = 16,
@@ -732,7 +705,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_TILT_SPEED,
- .name = "Tilt (Speed)",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_PANTILT_RELATIVE_CONTROL,
.size = 16,
@@ -744,7 +716,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_PRIVACY,
- .name = "Privacy",
.entity = UVC_GUID_UVC_CAMERA,
.selector = UVC_CT_PRIVACY_CONTROL,
.size = 1,
@@ -754,7 +725,6 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
},
{
.id = V4L2_CID_PRIVACY,
- .name = "Privacy",
.entity = UVC_GUID_EXT_GPIO_CONTROLLER,
.selector = UVC_CT_PRIVACY_CONTROL,
.size = 1,
@@ -1076,6 +1046,20 @@ static int uvc_query_v4l2_class(struct uvc_video_chain *chain, u32 req_id,
return 0;
}
+static const char *uvc_map_get_name(const struct uvc_control_mapping *map)
+{
+ const char *name;
+
+ if (map->name)
+ return map->name;
+
+ name = v4l2_ctrl_get_name(map->id);
+ if (name)
+ return name;
+
+ return "Unknown Control";
+}
+
static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
struct uvc_control *ctrl,
struct uvc_control_mapping *mapping,
@@ -1089,7 +1073,8 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
v4l2_ctrl->id = mapping->id;
v4l2_ctrl->type = mapping->v4l2_type;
- strscpy(v4l2_ctrl->name, mapping->name, sizeof(v4l2_ctrl->name));
+ strscpy(v4l2_ctrl->name, uvc_map_get_name(mapping),
+ sizeof(v4l2_ctrl->name));
v4l2_ctrl->flags = 0;
if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR))
@@ -2181,7 +2166,8 @@ static int __uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
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);
+ uvc_map_get_name(map), ctrl->info.entity,
+ ctrl->info.selector);
return 0;
}
@@ -2199,7 +2185,7 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
if (mapping->id & ~V4L2_CTRL_ID_MASK) {
uvc_dbg(dev, CONTROL,
"Can't add mapping '%s', control id 0x%08x is invalid\n",
- mapping->name, mapping->id);
+ uvc_map_get_name(mapping), mapping->id);
return -EINVAL;
}
@@ -2246,7 +2232,7 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
if (mapping->id == map->id) {
uvc_dbg(dev, CONTROL,
"Can't add mapping '%s', control id 0x%08x already exists\n",
- mapping->name, mapping->id);
+ uvc_map_get_name(mapping), mapping->id);
ret = -EEXIST;
goto done;
}
@@ -2257,7 +2243,7 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
atomic_dec(&dev->nmappings);
uvc_dbg(dev, CONTROL,
"Can't add mapping '%s', maximum mappings count (%u) exceeded\n",
- mapping->name, UVC_MAX_CONTROL_MAPPINGS);
+ uvc_map_get_name(mapping), UVC_MAX_CONTROL_MAPPINGS);
ret = -ENOMEM;
goto done;
}
@@ -2466,6 +2452,7 @@ static void uvc_ctrl_cleanup_mappings(struct uvc_device *dev,
list_for_each_entry_safe(mapping, nm, &ctrl->info.mappings, list) {
list_del(&mapping->list);
kfree(mapping->menu_info);
+ kfree(mapping->name);
kfree(mapping);
}
}
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 9cdd30eff495..28ccaa8b9e42 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -40,7 +40,13 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain,
return -ENOMEM;
map->id = xmap->id;
- memcpy(map->name, xmap->name, sizeof(map->name));
+ /* Non standard control id. */
+ if (v4l2_ctrl_get_name(map->id) == NULL) {
+ map->name = kmemdup(xmap->name, sizeof(xmap->name),
+ GFP_KERNEL);
+ if (!map->name)
+ return -ENOMEM;
+ }
memcpy(map->entity, xmap->entity, sizeof(map->entity));
map->selector = xmap->selector;
map->size = xmap->size;
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index a26bbec8d37b..dc20021f7ee0 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -240,7 +240,7 @@ struct uvc_control_mapping {
struct list_head ev_subs;
u32 id;
- u8 name[32];
+ char *name;
u8 entity[16];
u8 selector;
--
2.31.0.291.g576ba9dcdaf-goog