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[34.88.52.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-553379379c2sm2641210e87.251.2025.06.05.10.53.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Jun 2025 10:53:08 -0700 (PDT) From: Ricardo Ribalda Date: Thu, 05 Jun 2025 17:53:04 +0000 Subject: [PATCH v2 11/12] media: uvcvideo: Add support for V4L2_CID_CAMERA_ROTATION Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250605-uvc-orientation-v2-11-5710f9d030aa@chromium.org> References: <20250605-uvc-orientation-v2-0-5710f9d030aa@chromium.org> In-Reply-To: <20250605-uvc-orientation-v2-0-5710f9d030aa@chromium.org> To: Laurent Pinchart , Hans de Goede , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Linus Walleij , Bartosz Golaszewski , "Rafael J. Wysocki" , Len Brown Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.14.2 Fetch the rotation from the fwnode and map it into a control. Signed-off-by: Ricardo Ribalda --- drivers/media/usb/uvc/uvc_ctrl.c | 22 +++++++++++++-- drivers/media/usb/uvc/uvc_swentity.c | 55 ++++++++++++++++++++++++++++++++---- drivers/media/usb/uvc/uvcvideo.h | 5 ++++ 3 files changed, 74 insertions(+), 8 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index 59be62ae24a4219fa9d7aacf2ae7382c95362178..5788f0c0f6604da06a7bca1b9999d0957817e75e 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -378,11 +378,18 @@ static const struct uvc_control_info uvc_ctrls[] = { }, { .entity = UVC_GUID_SWENTITY, - .selector = 0, - .index = 0, + .selector = UVC_SWENTITY_ORIENTATION, + .index = UVC_SWENTITY_ORIENTATION, .size = 1, .flags = UVC_CTRL_FLAG_GET_CUR, }, + { + .entity = UVC_GUID_SWENTITY, + .selector = UVC_SWENTITY_ROTATION, + .index = UVC_SWENTITY_ROTATION, + .size = 2, + .flags = UVC_CTRL_FLAG_GET_RANGE, + }, }; static const u32 uvc_control_classes[] = { @@ -1025,7 +1032,7 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = { { .id = V4L2_CID_CAMERA_ORIENTATION, .entity = UVC_GUID_SWENTITY, - .selector = 0, + .selector = UVC_SWENTITY_ORIENTATION, .size = 8, .offset = 0, .v4l2_type = V4L2_CTRL_TYPE_MENU, @@ -1033,6 +1040,15 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = { .menu_mask = GENMASK(V4L2_CAMERA_ORIENTATION_EXTERNAL, V4L2_CAMERA_ORIENTATION_FRONT), }, + { + .id = V4L2_CID_CAMERA_SENSOR_ROTATION, + .entity = UVC_GUID_SWENTITY, + .selector = UVC_SWENTITY_ROTATION, + .size = 16, + .offset = 0, + .v4l2_type = V4L2_CTRL_TYPE_INTEGER, + .data_type = UVC_CTRL_DATA_TYPE_UNSIGNED, + }, }; /* ------------------------------------------------------------------------ diff --git a/drivers/media/usb/uvc/uvc_swentity.c b/drivers/media/usb/uvc/uvc_swentity.c index 702a2c26e029a0655dade177ed2a9b88d7a4136d..60f3166addbeb7d2e431d107b23034d2d11a1812 100644 --- a/drivers/media/usb/uvc/uvc_swentity.c +++ b/drivers/media/usb/uvc/uvc_swentity.c @@ -10,10 +10,11 @@ #include #include "uvcvideo.h" -static int uvc_swentity_get_cur(struct uvc_device *dev, struct uvc_entity *entity, - u8 cs, void *data, u16 size) +static int uvc_swentity_get_orientation(struct uvc_device *dev, + struct uvc_entity *entity, u8 cs, + void *data, u16 size) { - if (size < 1) + if (cs != UVC_SWENTITY_ORIENTATION || size != 1) return -EINVAL; switch (entity->swentity.props.orientation) { @@ -30,6 +31,31 @@ static int uvc_swentity_get_cur(struct uvc_device *dev, struct uvc_entity *entit return 0; } +static int uvc_swentity_get_rotation(struct uvc_device *dev, + struct uvc_entity *entity, u8 cs, void *data, + u16 size) +{ + if (cs != UVC_SWENTITY_ROTATION || size != 2) + return -EINVAL; + + ((u8 *)data)[0] = entity->swentity.props.rotation; + ((u8 *)data)[1] = entity->swentity.props.rotation >> 8; + + return 0; +} + +static int uvc_swentity_get_cur(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *data, u16 size) +{ + switch (cs) { + case UVC_SWENTITY_ORIENTATION: + return uvc_swentity_get_orientation(dev, entity, cs, data, size); + case UVC_SWENTITY_ROTATION: + return uvc_swentity_get_rotation(dev, entity, cs, data, size); + } + return -EINVAL; +} + static int uvc_swentity_get_info(struct uvc_device *dev, struct uvc_entity *entity, u8 cs, u8 *caps) { @@ -37,11 +63,22 @@ static int uvc_swentity_get_info(struct uvc_device *dev, return 0; } +static int uvc_swentity_get_res(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *res, u16 size) +{ + if (size == 0) + return -EINVAL; + ((u8 *)res)[0] = 1; + memset(res + 1, 0, size - 1); + return 0; +} + int uvc_swentity_init(struct uvc_device *dev) { static const u8 uvc_swentity_guid[] = UVC_GUID_SWENTITY; struct v4l2_fwnode_device_properties props; struct uvc_entity *unit; + u8 controls = 0; int ret; ret = v4l2_fwnode_device_parse(&dev->udev->dev, &props); @@ -49,7 +86,11 @@ int uvc_swentity_init(struct uvc_device *dev) return dev_err_probe(&dev->intf->dev, ret, "Can't parse fwnode\n"); - if (props.orientation == V4L2_FWNODE_PROPERTY_UNSET) + if (props.orientation != V4L2_FWNODE_PROPERTY_UNSET) + controls |= BIT(UVC_SWENTITY_ORIENTATION); + if (props.rotation != V4L2_FWNODE_PROPERTY_UNSET) + controls |= BIT(UVC_SWENTITY_ROTATION); + if (!controls) return 0; unit = uvc_alloc_entity(UVC_SWENTITY_UNIT, UVC_SWENTITY_UNIT_ID, 0, 1); @@ -60,9 +101,13 @@ int uvc_swentity_init(struct uvc_device *dev) unit->swentity.props = props; unit->swentity.bControlSize = 1; unit->swentity.bmControls = (u8 *)unit + sizeof(*unit); - unit->swentity.bmControls[0] = 1; + unit->swentity.bmControls[0] = controls; unit->get_cur = uvc_swentity_get_cur; unit->get_info = uvc_swentity_get_info; + unit->get_res = uvc_swentity_get_res; + unit->get_def = uvc_swentity_get_rotation; + unit->get_min = uvc_swentity_get_rotation; + unit->get_max = uvc_swentity_get_rotation; strscpy(unit->name, "SWENTITY", sizeof(unit->name)); list_add_tail(&unit->list, &dev->entities); diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index d6da8ed3ad4cf3377df49923e051fe04d83d2e38..7cca0dc75d11f6a13bc4f09676a5a00e80cb38f7 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -45,6 +45,11 @@ #define UVC_SWENTITY_UNIT 0x7ffd #define UVC_SWENTITY_UNIT_ID 0x101 +enum { + UVC_SWENTITY_ORIENTATION, + UVC_SWENTITY_ROTATION +}; + /* ------------------------------------------------------------------------ * Driver specific constants. */