BMC/Intel-BMC/linux.git/drivers/usb/gadget/function/f_uvc.c, branch dev-4.3

usb: gadget: f_uvc: use bind_deactivated flag

2015-07-29T14:59:20+00:00

Use bind_deactivated flag instead of calling usb_function_deactivate() in function bind(). Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi

[media] gadget/uvc: embed video_device

2015-04-03T02:36:20+00:00

Embed the video_device struct to simplify the error handling and in order to (eventually) get rid of video_device_alloc/release. Signed-off-by: Hans Verkuil Cc: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] uvc gadget: switch to v4l2 core locking

2015-03-02T20:05:23+00:00

Switch this driver over to the V4L2 core locking mechanism in preparation for switching to unlocked_ioctl. Suggested by Laurent Pinchart. This patch introduces a new mutex at the struct uvc_video level and drops the old mutex at the queue level. The new lock is now used for all ioctl locking and in the release file operation (the driver always has to take care of locking in file operations, the core only serializes ioctls). Note that the mmap and get_unmapped_area file operations no longer take a lock. Commit f035eb4e976ef5a059e30bc91cfd310ff030a7d3 fixed a AB-BA deadlock by moving all the locking down into vb2, so the mmap and get_unmapped_area file operations should no longer do any locking before calling into vb2. Signed-off-by: Hans Verkuil Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

usb: gadget: uvc: configfs support in uvc function

2015-01-12T18:13:26+00:00

Add support for using the uvc function as a component of USB gadgets composed with configfs. Acked-by: Laurent Pinchart Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi

usb: gadget: uvc: verify descriptors presence

2015-01-12T18:13:26+00:00

If the caller of uvc_alloc() does not provide enough descriptors, binding the function should fail, so appropriate code is returned from uvc_copy_descriptors(). uvc_function_bind() is modified accordingly to account for possible errors from uvc_copy_descriptors(). Signed-off-by: Andrzej Pietrasiewicz Acked-by: Laurent Pinchart Signed-off-by: Felipe Balbi

usb: gadget: f_uvc: rename a macro to avoid conflicts

2015-01-12T18:13:26+00:00

When configfs is integrated, CONFIGFS_ATTR_STRUCT and CONFIGFS_ATTR_OPS macros should be used, but the latter expects that tere is a to_f_uvc_opts function accepting a config_item, whereas the macro being changed can be applied to a different type of argument. Signed-off-by: Andrzej Pietrasiewicz Acked-by: Laurent Pinchart Signed-off-by: Felipe Balbi

usb: gadget: function: uvc: disable endpoints on ->disable()

2014-10-20T20:58:48+00:00

when our ->disable() method is called, we must make sure to teardown all our resources, including endpoints. Signed-off-by: Felipe Balbi

usb: gadget: function: uvc: manage our video control endpoint

2014-10-20T20:58:48+00:00

just like any other endpoint, we must enable/disable our video control endpoint based on calls to our ->set_alt() method. Signed-off-by: Felipe Balbi

usb: gadget: function: uvc: return correct alt-setting

2014-10-20T20:58:48+00:00

If our alternate setting has been selected, we must return that on a subsequent Get Interface request even if we're not streaming. Signed-off-by: Felipe Balbi

usb: gadget: function: uvc: make sure to balance ep enable/disable

2014-10-20T20:58:48+00:00

If a set_alt() to the same alternate setting that's already selected is received, functions are required to reset the interface state, this means we must disable all endpoints and reenable them again. This is also documented on our kdoc for struct usb_function * @set_alt: (REQUIRED) Reconfigures altsettings; function drivers may * initialize usb_ep.driver data at this time (when it is used). * Note that setting an interface to its current altsetting resets * interface state, and that all interfaces have a disabled state. Signed-off-by: Felipe Balbi