[PATCH v2 10/12] media: uvcvideo: Add get_* functions to uvc_entity
From: Ricardo Ribalda <hidden>
Date: 2025-06-05 17:53:11
Also in:
linux-acpi, linux-gpio, linux-media, linux-usb, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest, usb video class · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds, Laurent Pinchart, Hans de Goede
Virtual entities need to provide more values than get_cur and get_cur for their controls. Add support for get_def, get_min, get_max and get_res. This is a preparation patch. Signed-off-by: Ricardo Ribalda <redacted> --- drivers/media/usb/uvc/uvc_ctrl.c | 12 ++++++++++++ drivers/media/usb/uvc/uvcvideo.h | 8 ++++++++ 2 files changed, 20 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 21ec7b978bc7aca21db7cb8fd5d135d876f3330c..59be62ae24a4219fa9d7aacf2ae7382c95362178 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c@@ -596,6 +596,18 @@ static int uvc_ctrl_query_entity(struct uvc_device *dev, if (query == UVC_GET_CUR && ctrl->entity->get_cur) return ctrl->entity->get_cur(dev, ctrl->entity, ctrl->info.selector, data, len); + if (query == UVC_GET_DEF && ctrl->entity->get_def) + return ctrl->entity->get_def(dev, ctrl->entity, + ctrl->info.selector, data, len); + if (query == UVC_GET_MIN && ctrl->entity->get_min) + return ctrl->entity->get_min(dev, ctrl->entity, + ctrl->info.selector, data, len); + if (query == UVC_GET_MAX && ctrl->entity->get_max) + return ctrl->entity->get_max(dev, ctrl->entity, + ctrl->info.selector, data, len); + if (query == UVC_GET_RES && ctrl->entity->get_res) + return ctrl->entity->get_res(dev, ctrl->entity, + ctrl->info.selector, data, len); if (query == UVC_GET_INFO && ctrl->entity->get_info) return ctrl->entity->get_info(dev, ctrl->entity, ctrl->info.selector, data);
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index a931750bdea25b9062dcc7644bf5f2ed89c1cb4c..d6da8ed3ad4cf3377df49923e051fe04d83d2e38 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h@@ -261,6 +261,14 @@ struct uvc_entity { u8 cs, u8 *caps); int (*get_cur)(struct uvc_device *dev, struct uvc_entity *entity, u8 cs, void *data, u16 size); + int (*get_def)(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *data, u16 size); + int (*get_min)(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *data, u16 size); + int (*get_max)(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *data, u16 size); + int (*get_res)(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *data, u16 size); unsigned int ncontrols; struct uvc_control *controls;
--
2.50.0.rc0.642.g800a2b2222-goog