1 files changed, 99 insertions, 80 deletions

diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 011e69427b7c..b3dde98499f4 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -347,6 +347,14 @@ static const struct uvc_control_info uvc_ctrls[] = {
 				| UVC_CTRL_FLAG_RESTORE
 				| UVC_CTRL_FLAG_AUTO_UPDATE,
 	},
+	{
+		.entity		= UVC_GUID_EXT_GPIO_CONTROLLER,
+		.selector	= UVC_CT_PRIVACY_CONTROL,
+		.index		= 0,
+		.size		= 1,
+		.flags		= UVC_CTRL_FLAG_GET_CUR
+				| UVC_CTRL_FLAG_AUTO_UPDATE,
+	},
 };
 
 static const struct uvc_menu_info power_line_frequency_controls[] = {
@@ -735,6 +743,16 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
 		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
 		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
 	},
+	{
+		.id		= V4L2_CID_PRIVACY,
+		.name		= "Privacy",
+		.entity		= UVC_GUID_EXT_GPIO_CONTROLLER,
+		.selector	= UVC_CT_PRIVACY_CONTROL,
+		.size		= 1,
+		.offset		= 0,
+		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
+		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
+	},
 };
 
 /* ------------------------------------------------------------------------
@@ -826,31 +844,10 @@ static void uvc_set_le_value(struct uvc_control_mapping *mapping,
  * Terminal and unit management
  */
 
-static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
-static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
-static const u8 uvc_media_transport_input_guid[16] =
-	UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
-
 static int uvc_entity_match_guid(const struct uvc_entity *entity,
-	const u8 guid[16])
+				 const u8 guid[16])
 {
-	switch (UVC_ENTITY_TYPE(entity)) {
-	case UVC_ITT_CAMERA:
-		return memcmp(uvc_camera_guid, guid, 16) == 0;
-
-	case UVC_ITT_MEDIA_TRANSPORT_INPUT:
-		return memcmp(uvc_media_transport_input_guid, guid, 16) == 0;
-
-	case UVC_VC_PROCESSING_UNIT:
-		return memcmp(uvc_processing_guid, guid, 16) == 0;
-
-	case UVC_VC_EXTENSION_UNIT:
-		return memcmp(entity->extension.guidExtensionCode,
-			      guid, 16) == 0;
-
-	default:
-		return 0;
-	}
+	return memcmp(entity->guid, guid, sizeof(entity->guid)) == 0;
 }
 
 /* ------------------------------------------------------------------------
@@ -909,8 +906,8 @@ static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
 	}
 
 	if (ctrl == NULL && !next)
-		uvc_trace(UVC_TRACE_CONTROL, "Control 0x%08x not found.\n",
-				v4l2_id);
+		uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n",
+			v4l2_id);
 
 	return ctrl;
 }
@@ -1001,10 +998,20 @@ static int __uvc_ctrl_get(struct uvc_video_chain *chain,
 		return -EACCES;
 
 	if (!ctrl->loaded) {
-		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id,
-				chain->dev->intfnum, ctrl->info.selector,
+		if (ctrl->entity->get_cur) {
+			ret = ctrl->entity->get_cur(chain->dev,
+				ctrl->entity,
+				ctrl->info.selector,
+				uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
+				ctrl->info.size);
+		} else {
+			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,
+				ctrl->entity->id,
+				chain->dev->intfnum,
+				ctrl->info.selector,
 				uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT),
 				ctrl->info.size);
+		}
 		if (ret < 0)
 			return ret;
 
@@ -1275,17 +1282,12 @@ static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,
 	uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);
 }
 
-static void uvc_ctrl_status_event_work(struct work_struct *work)
+void uvc_ctrl_status_event(struct uvc_video_chain *chain,
+			   struct uvc_control *ctrl, const u8 *data)
 {
-	struct uvc_device *dev = container_of(work, struct uvc_device,
-					      async_ctrl.work);
-	struct uvc_ctrl_work *w = &dev->async_ctrl;
-	struct uvc_video_chain *chain = w->chain;
 	struct uvc_control_mapping *mapping;
-	struct uvc_control *ctrl = w->ctrl;
 	struct uvc_fh *handle;
 	unsigned int i;
-	int ret;
 
 	mutex_lock(&chain->ctrl_mutex);
 
@@ -1293,7 +1295,7 @@ static void uvc_ctrl_status_event_work(struct work_struct *work)
 	ctrl->handle = NULL;
 
 	list_for_each_entry(mapping, &ctrl->info.mappings, list) {
-		s32 value = __uvc_ctrl_get_value(mapping, w->data);
+		s32 value = __uvc_ctrl_get_value(mapping, data);
 
 		/*
 		 * handle may be NULL here if the device sends auto-update
@@ -1312,17 +1314,27 @@ static void uvc_ctrl_status_event_work(struct work_struct *work)
 	}
 
 	mutex_unlock(&chain->ctrl_mutex);
+}
+
+static void uvc_ctrl_status_event_work(struct work_struct *work)
+{
+	struct uvc_device *dev = container_of(work, struct uvc_device,
+					      async_ctrl.work);
+	struct uvc_ctrl_work *w = &dev->async_ctrl;
+	int ret;
+
+	uvc_ctrl_status_event(w->chain, w->ctrl, w->data);
 
 	/* Resubmit the URB. */
 	w->urb->interval = dev->int_ep->desc.bInterval;
 	ret = usb_submit_urb(w->urb, GFP_KERNEL);
 	if (ret < 0)
-		uvc_printk(KERN_ERR, "Failed to resubmit status URB (%d).\n",
-			   ret);
+		dev_err(&dev->udev->dev,
+			"Failed to resubmit status URB (%d).\n", ret);
 }
 
-bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain,
-			   struct uvc_control *ctrl, const u8 *data)
+bool uvc_ctrl_status_event_async(struct urb *urb, struct uvc_video_chain *chain,
+				 struct uvc_control *ctrl, const u8 *data)
 {
 	struct uvc_device *dev = chain->dev;
 	struct uvc_ctrl_work *w = &dev->async_ctrl;
@@ -1708,8 +1720,12 @@ static int uvc_ctrl_get_flags(struct uvc_device *dev,
 	if (data == NULL)
 		return -ENOMEM;
 
-	ret = uvc_query_ctrl(dev, UVC_GET_INFO, ctrl->entity->id, dev->intfnum,
-			     info->selector, data, 1);
+	if (ctrl->entity->get_info)
+		ret = ctrl->entity->get_info(dev, ctrl->entity,
+					     ctrl->info.selector, data);
+	else
+		ret = uvc_query_ctrl(dev, UVC_GET_INFO, ctrl->entity->id,
+				     dev->intfnum, info->selector, data, 1);
 	if (!ret)
 		info->flags |= (data[0] & UVC_CONTROL_CAP_GET ?
 				UVC_CTRL_FLAG_GET_CUR : 0)
@@ -1776,8 +1792,7 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 	if (data == NULL)
 		return -ENOMEM;
 
-	memcpy(info->entity, ctrl->entity->extension.guidExtensionCode,
-	       sizeof(info->entity));
+	memcpy(info->entity, ctrl->entity->guid, sizeof(info->entity));
 	info->index = ctrl->index;
 	info->selector = ctrl->index + 1;
 
@@ -1785,9 +1800,9 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 	ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,
 			     info->selector, data, 2);
 	if (ret < 0) {
-		uvc_trace(UVC_TRACE_CONTROL,
-			  "GET_LEN failed on control %pUl/%u (%d).\n",
-			   info->entity, info->selector, ret);
+		uvc_dbg(dev, CONTROL,
+			"GET_LEN failed on control %pUl/%u (%d)\n",
+			info->entity, info->selector, ret);
 		goto done;
 	}
 
@@ -1798,20 +1813,20 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 
 	ret = uvc_ctrl_get_flags(dev, ctrl, info);
 	if (ret < 0) {
-		uvc_trace(UVC_TRACE_CONTROL,
-			  "Failed to get flags for control %pUl/%u (%d).\n",
-			  info->entity, info->selector, ret);
+		uvc_dbg(dev, CONTROL,
+			"Failed to get flags for control %pUl/%u (%d)\n",
+			info->entity, info->selector, ret);
 		goto done;
 	}
 
 	uvc_ctrl_fixup_xu_info(dev, ctrl, info);
 
-	uvc_trace(UVC_TRACE_CONTROL, "XU control %pUl/%u queried: len %u, "
-		  "flags { get %u set %u auto %u }.\n",
-		  info->entity, info->selector, info->size,
-		  (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
-		  (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
-		  (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
+	uvc_dbg(dev, CONTROL,
+		"XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }\n",
+		info->entity, info->selector, info->size,
+		(info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
+		(info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
+		(info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
 
 done:
 	kfree(data);
@@ -1836,9 +1851,10 @@ static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,
 
 	ret = uvc_ctrl_add_info(dev, ctrl, &info);
 	if (ret < 0)
-		uvc_trace(UVC_TRACE_CONTROL, "Failed to initialize control "
-			  "%pUl/%u on device %s entity %u\n", info.entity,
-			  info.selector, dev->udev->devpath, ctrl->entity->id);
+		uvc_dbg(dev, CONTROL,
+			"Failed to initialize control %pUl/%u on device %s entity %u\n",
+			info.entity, info.selector, dev->udev->devpath,
+			ctrl->entity->id);
 
 	return ret;
 }
@@ -1866,7 +1882,7 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 	}
 
 	if (!found) {
-		uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n",
+		uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",
 			xqry->unit);
 		return -ENOENT;
 	}
@@ -1882,8 +1898,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 	}
 
 	if (!found) {
-		uvc_trace(UVC_TRACE_CONTROL, "Control %pUl/%u not found.\n",
-			entity->extension.guidExtensionCode, xqry->selector);
+		uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n",
+			entity->guid, xqry->selector);
 		return -ENOENT;
 	}
 
@@ -1995,10 +2011,10 @@ int uvc_ctrl_restore_values(struct uvc_device *dev)
 			if (!ctrl->initialized || !ctrl->modified ||
 			    (ctrl->info.flags & UVC_CTRL_FLAG_RESTORE) == 0)
 				continue;
-
-			printk(KERN_INFO "restoring control %pUl/%u/%u\n",
-				ctrl->info.entity, ctrl->info.index,
-				ctrl->info.selector);
+			dev_info(&dev->udev->dev,
+				 "restoring control %pUl/%u/%u\n",
+				 ctrl->info.entity, ctrl->info.index,
+				 ctrl->info.selector);
 			ctrl->dirty = 1;
 		}
 
@@ -2031,9 +2047,9 @@ static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
 
 	ctrl->initialized = 1;
 
-	uvc_trace(UVC_TRACE_CONTROL, "Added control %pUl/%u to device %s "
-		"entity %u\n", ctrl->info.entity, ctrl->info.selector,
-		dev->udev->devpath, ctrl->entity->id);
+	uvc_dbg(dev, CONTROL, "Added control %pUl/%u to device %s entity %u\n",
+		ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
+		ctrl->entity->id);
 
 	return 0;
 }
@@ -2070,8 +2086,7 @@ static int __uvc_ctrl_add_mapping(struct uvc_device *dev,
 		map->set = uvc_set_le_value;
 
 	list_add_tail(&map->list, &ctrl->info.mappings);
-	uvc_trace(UVC_TRACE_CONTROL,
-		"Adding mapping '%s' to control %pUl/%u.\n",
+	uvc_dbg(dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
 		map->name, ctrl->info.entity, ctrl->info.selector);
 
 	return 0;
@@ -2088,9 +2103,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 	int ret;
 
 	if (mapping->id & ~V4L2_CTRL_ID_MASK) {
-		uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', control "
-			"id 0x%08x is invalid.\n", mapping->name,
-			mapping->id);
+		uvc_dbg(dev, CONTROL,
+			"Can't add mapping '%s', control id 0x%08x is invalid\n",
+			mapping->name, mapping->id);
 		return -EINVAL;
 	}
 
@@ -2135,8 +2150,8 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 
 	list_for_each_entry(map, &ctrl->info.mappings, list) {
 		if (mapping->id == map->id) {
-			uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', "
-				"control id 0x%08x already exists.\n",
+			uvc_dbg(dev, CONTROL,
+				"Can't add mapping '%s', control id 0x%08x already exists\n",
 				mapping->name, mapping->id);
 			ret = -EEXIST;
 			goto done;
@@ -2146,9 +2161,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 	/* Prevent excess memory consumption */
 	if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {
 		atomic_dec(&dev->nmappings);
-		uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', maximum "
-			"mappings count (%u) exceeded.\n", mapping->name,
-			UVC_MAX_CONTROL_MAPPINGS);
+		uvc_dbg(dev, CONTROL,
+			"Can't add mapping '%s', maximum mappings count (%u) exceeded\n",
+			mapping->name, UVC_MAX_CONTROL_MAPPINGS);
 		ret = -ENOMEM;
 		goto done;
 	}
@@ -2217,8 +2232,9 @@ static void uvc_ctrl_prune_entity(struct uvc_device *dev,
 		    !uvc_test_bit(controls, blacklist[i].index))
 			continue;
 
-		uvc_trace(UVC_TRACE_CONTROL, "%u/%u control is black listed, "
-			"removing it.\n", entity->id, blacklist[i].index);
+		uvc_dbg(dev, CONTROL,
+			"%u/%u control is black listed, removing it\n",
+			entity->id, blacklist[i].index);
 
 		uvc_clear_bit(controls, blacklist[i].index);
 	}
@@ -2294,6 +2310,9 @@ int uvc_ctrl_init_device(struct uvc_device *dev)
 		} else if (UVC_ENTITY_TYPE(entity) == UVC_ITT_CAMERA) {
 			bmControls = entity->camera.bmControls;
 			bControlSize = entity->camera.bControlSize;
+		} else if (UVC_ENTITY_TYPE(entity) == UVC_EXT_GPIO_UNIT) {
+			bmControls = entity->gpio.bmControls;
+			bControlSize = entity->gpio.bControlSize;
 		}
 
 		/* Remove bogus/blacklisted controls */