From: Ricardo Ribalda ribalda@chromium.org
[ Upstream commit 70fa906d6fceb07a49198d2f31cadecc76787419 ]
The framework already contains a map of IDs to names, lets use it when possible.
Reviewed-by: Hans Verkuil hverkuil-cisco@xs4all.nl Suggested-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Ricardo Ribalda ribalda@chromium.org Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Stable-dep-of: 9f582f0418ed ("media: uvcvideo: Check for INACTIVE in uvc_ctrl_is_accessible()") Signed-off-by: Sasha Levin sashal@kernel.org --- 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 769088a7f9375..748f87af5e43e 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -432,7 +432,6 @@ 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, @@ -442,7 +441,6 @@ 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, @@ -452,7 +450,6 @@ 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, @@ -464,7 +461,6 @@ 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, @@ -474,7 +470,6 @@ 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, @@ -484,7 +479,6 @@ 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, @@ -494,7 +488,6 @@ 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, @@ -504,7 +497,6 @@ 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, @@ -514,7 +506,6 @@ 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, @@ -526,7 +517,6 @@ 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, @@ -537,7 +527,6 @@ 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, @@ -550,7 +539,6 @@ 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, @@ -560,7 +548,6 @@ 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, @@ -572,7 +559,6 @@ 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, @@ -583,7 +569,6 @@ 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, @@ -595,7 +580,6 @@ 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, @@ -607,7 +591,6 @@ 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, @@ -619,7 +602,6 @@ 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, @@ -631,7 +613,6 @@ 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, @@ -643,7 +624,6 @@ 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, @@ -654,7 +634,6 @@ 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, @@ -664,7 +643,6 @@ 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, @@ -674,7 +652,6 @@ 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, @@ -684,7 +661,6 @@ 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, @@ -696,7 +672,6 @@ 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, @@ -706,7 +681,6 @@ 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, @@ -716,7 +690,6 @@ 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, @@ -728,7 +701,6 @@ 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, @@ -740,7 +712,6 @@ 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, @@ -750,7 +721,6 @@ 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, @@ -1092,6 +1062,20 @@ 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, @@ -1105,7 +1089,8 @@ 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)) @@ -2186,7 +2171,8 @@ 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; } @@ -2204,7 +2190,7 @@ 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; }
@@ -2251,7 +2237,7 @@ 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; } @@ -2262,7 +2248,7 @@ 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; } @@ -2471,6 +2457,7 @@ 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 6955ed080d7dc..533c4a0645ee4 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 2c57a50f6a79b..33befa48fb493 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -241,7 +241,7 @@ struct uvc_control_mapping { struct list_head ev_subs;
u32 id; - u8 name[32]; + char *name; u8 entity[16]; u8 selector;