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Commit 755801cb authored by Felipe Balbi's avatar Felipe Balbi
Browse files

Merge tag 'uvcg-20180925' of git://linuxtv.org/pinchartl/media into testing/next 

UVC gadget updates for v4.20

- configfs cleanups, fixes and extensions
- Endianness fixes
- Miscellaneous cleanups
parents 17b57b18 3fb2fd76

Documentation/ABI/testing/configfs-usb-gadget-uvc

+24 −0
Original line number Diff line number Diff line
@@ -12,6 +12,10 @@ Date: Dec 2014 
KernelVersion:	4.0

Description:	Control descriptors



		All attributes read only:

		bInterfaceNumber	- USB interface number for this

					  streaming interface



What:		/config/usb-gadget/gadget/functions/uvc.name/control/class

Date:		Dec 2014

KernelVersion:	4.0
@@ -109,6 +113,10 @@ Date: Dec 2014 
KernelVersion:	4.0

Description:	Streaming descriptors



		All attributes read only:

		bInterfaceNumber	- USB interface number for this

					  streaming interface



What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/class

Date:		Dec 2014

KernelVersion:	4.0
@@ -160,6 +168,10 @@ Description: Specific MJPEG format descriptors 


		All attributes read only,

		except bmaControls and bDefaultFrameIndex:

		bFormatIndex		- unique id for this format descriptor;

					only defined after parent header is

					linked into the streaming class;

					read-only

		bmaControls		- this format's data for bmaControls in

					the streaming header

		bmInterfaceFlags	- specifies interlace information,
@@ -177,6 +189,10 @@ Date: Dec 2014 
KernelVersion:	4.0

Description:	Specific MJPEG frame descriptors



		bFrameIndex		- unique id for this framedescriptor;

					only defined after parent format is

					linked into the streaming header;

					read-only

		dwFrameInterval		- indicates how frame interval can be

					programmed; a number of values

					separated by newline can be specified
@@ -204,6 +220,10 @@ Date: Dec 2014 
KernelVersion:	4.0

Description:	Specific uncompressed format descriptors



		bFormatIndex		- unique id for this format descriptor;

					only defined after parent header is

					linked into the streaming class;

					read-only

		bmaControls		- this format's data for bmaControls in

					the streaming header

		bmInterfaceFlags	- specifies interlace information,
@@ -224,6 +244,10 @@ Date: Dec 2014 
KernelVersion:	4.0

Description:	Specific uncompressed frame descriptors



		bFrameIndex		- unique id for this framedescriptor;

					only defined after parent format is

					linked into the streaming header;

					read-only

		dwFrameInterval		- indicates how frame interval can be

					programmed; a number of values

					separated by newline can be specified

drivers/usb/gadget/function/f_uvc.c

+26 −31
Original line number Diff line number Diff line
@@ -197,12 +197,6 @@ static const struct usb_descriptor_header * const uvc_ss_streaming[] = { 
	NULL,

};



void uvc_set_trace_param(unsigned int trace)

{

	uvc_gadget_trace_param = trace;

}

EXPORT_SYMBOL(uvc_set_trace_param);



/* --------------------------------------------------------------------------

 * Control requests

 */
@@ -232,13 +226,8 @@ uvc_function_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) 
	struct v4l2_event v4l2_event;

	struct uvc_event *uvc_event = (void *)&v4l2_event.u.data;



	/* printk(KERN_INFO "setup request %02x %02x value %04x index %04x %04x\n",

	 *	ctrl->bRequestType, ctrl->bRequest, le16_to_cpu(ctrl->wValue),

	 *	le16_to_cpu(ctrl->wIndex), le16_to_cpu(ctrl->wLength));

	 */



	if ((ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) {

		INFO(f->config->cdev, "invalid request type\n");

		uvcg_info(f, "invalid request type\n");

		return -EINVAL;

	}
@@ -272,7 +261,7 @@ uvc_function_get_alt(struct usb_function *f, unsigned interface) 
{

	struct uvc_device *uvc = to_uvc(f);



	INFO(f->config->cdev, "uvc_function_get_alt(%u)\n", interface);

	uvcg_info(f, "%s(%u)\n", __func__, interface);



	if (interface == uvc->control_intf)

		return 0;
@@ -291,13 +280,13 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) 
	struct uvc_event *uvc_event = (void *)&v4l2_event.u.data;

	int ret;



	INFO(cdev, "uvc_function_set_alt(%u, %u)\n", interface, alt);

	uvcg_info(f, "%s(%u, %u)\n", __func__, interface, alt);



	if (interface == uvc->control_intf) {

		if (alt)

			return -EINVAL;



		INFO(cdev, "reset UVC Control\n");

		uvcg_info(f, "reset UVC Control\n");

		usb_ep_disable(uvc->control_ep);



		if (!uvc->control_ep->desc)
@@ -348,7 +337,7 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) 
		if (!uvc->video.ep)

			return -EINVAL;



		INFO(cdev, "reset UVC\n");

		uvcg_info(f, "reset UVC\n");

		usb_ep_disable(uvc->video.ep);



		ret = config_ep_by_speed(f->config->cdev->gadget,
@@ -373,7 +362,7 @@ uvc_function_disable(struct usb_function *f) 
	struct uvc_device *uvc = to_uvc(f);

	struct v4l2_event v4l2_event;



	INFO(f->config->cdev, "uvc_function_disable\n");

	uvcg_info(f, "%s()\n", __func__);



	memset(&v4l2_event, 0, sizeof(v4l2_event));

	v4l2_event.type = UVC_EVENT_DISCONNECT;
@@ -392,21 +381,19 @@ uvc_function_disable(struct usb_function *f) 
void

uvc_function_connect(struct uvc_device *uvc)

{

	struct usb_composite_dev *cdev = uvc->func.config->cdev;

	int ret;



	if ((ret = usb_function_activate(&uvc->func)) < 0)

		INFO(cdev, "UVC connect failed with %d\n", ret);

		uvcg_info(&uvc->func, "UVC connect failed with %d\n", ret);

}



void

uvc_function_disconnect(struct uvc_device *uvc)

{

	struct usb_composite_dev *cdev = uvc->func.config->cdev;

	int ret;



	if ((ret = usb_function_deactivate(&uvc->func)) < 0)

		INFO(cdev, "UVC disconnect failed with %d\n", ret);

		uvcg_info(&uvc->func, "UVC disconnect failed with %d\n", ret);

}



/* --------------------------------------------------------------------------
@@ -605,7 +592,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) 
	struct f_uvc_opts *opts;

	int ret = -EINVAL;



	INFO(cdev, "uvc_function_bind\n");

	uvcg_info(f, "%s()\n", __func__);



	opts = fi_to_f_uvc_opts(f->fi);

	/* Sanity check the streaming endpoint module parameters.
@@ -618,7 +605,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) 
	if (opts->streaming_maxburst &&

	    (opts->streaming_maxpacket % 1024) != 0) {

		opts->streaming_maxpacket = roundup(opts->streaming_maxpacket, 1024);

		INFO(cdev, "overriding streaming_maxpacket to %d\n",

		uvcg_info(f, "overriding streaming_maxpacket to %d\n",

			  opts->streaming_maxpacket);

	}
@@ -658,7 +645,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) 
	/* Allocate endpoints. */

	ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep);

	if (!ep) {

		INFO(cdev, "Unable to allocate control EP\n");

		uvcg_info(f, "Unable to allocate control EP\n");

		goto error;

	}

	uvc->control_ep = ep;
@@ -672,7 +659,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) 
		ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep);



	if (!ep) {

		INFO(cdev, "Unable to allocate streaming EP\n");

		uvcg_info(f, "Unable to allocate streaming EP\n");

		goto error;

	}

	uvc->video.ep = ep;
@@ -699,12 +686,14 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) 
	uvc_iad.bFirstInterface = ret;

	uvc_control_intf.bInterfaceNumber = ret;

	uvc->control_intf = ret;

	opts->control_interface = ret;



	if ((ret = usb_interface_id(c, f)) < 0)

		goto error;

	uvc_streaming_intf_alt0.bInterfaceNumber = ret;

	uvc_streaming_intf_alt1.bInterfaceNumber = ret;

	uvc->streaming_intf = ret;

	opts->streaming_interface = ret;



	/* Copy descriptors */

	f->fs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL);
@@ -743,19 +732,19 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) 
	uvc->control_req->context = uvc;



	if (v4l2_device_register(&cdev->gadget->dev, &uvc->v4l2_dev)) {

		printk(KERN_INFO "v4l2_device_register failed\n");

		uvcg_err(f, "failed to register V4L2 device\n");

		goto error;

	}



	/* Initialise video. */

	ret = uvcg_video_init(&uvc->video);

	ret = uvcg_video_init(&uvc->video, uvc);

	if (ret < 0)

		goto error;



	/* Register a V4L2 device. */

	ret = uvc_register_video(uvc);

	if (ret < 0) {

		printk(KERN_INFO "Unable to register video device\n");

		uvcg_err(f, "failed to register video device\n");

		goto error;

	}
@@ -792,6 +781,7 @@ static struct usb_function_instance *uvc_alloc_inst(void) 
	struct uvc_output_terminal_descriptor *od;

	struct uvc_color_matching_descriptor *md;

	struct uvc_descriptor_header **ctl_cls;

	int ret;



	opts = kzalloc(sizeof(*opts), GFP_KERNEL);

	if (!opts)
@@ -868,7 +858,12 @@ static struct usb_function_instance *uvc_alloc_inst(void) 
	opts->streaming_interval = 1;

	opts->streaming_maxpacket = 1024;



	uvcg_attach_configfs(opts);

	ret = uvcg_attach_configfs(opts);

	if (ret < 0) {

		kfree(opts);

		return ERR_PTR(ret);

	}



	return &opts->func_inst;

}
@@ -886,7 +881,7 @@ static void uvc_unbind(struct usb_configuration *c, struct usb_function *f) 
	struct usb_composite_dev *cdev = c->cdev;

	struct uvc_device *uvc = to_uvc(f);



	INFO(cdev, "%s\n", __func__);

	uvcg_info(f, "%s\n", __func__);



	device_remove_file(&uvc->vdev.dev, &dev_attr_function_name);

	video_unregister_device(&uvc->vdev);

drivers/usb/gadget/function/u_uvc.h

+3 −0
Original line number Diff line number Diff line
@@ -25,6 +25,9 @@ struct f_uvc_opts { 
	unsigned int					streaming_maxpacket;

	unsigned int					streaming_maxburst;



	unsigned int					control_interface;

	unsigned int					streaming_interface;



	/*

	 * Control descriptors array pointers for full-/high-speed and

	 * super-speed. They point by default to the uvc_fs_control_cls and

drivers/usb/gadget/function/uvc.h

+8 −8
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
struct usb_ep;

struct usb_request;

struct uvc_descriptor_header;

struct uvc_device;



/* ------------------------------------------------------------------------

 * Debugging, printing and logging
@@ -51,14 +52,12 @@ extern unsigned int uvc_gadget_trace_param; 
			printk(KERN_DEBUG "uvcvideo: " msg); \

	} while (0)



#define uvc_warn_once(dev, warn, msg...) \

	do { \

		if (!test_and_set_bit(warn, &dev->warnings)) \

			printk(KERN_INFO "uvcvideo: " msg); \

	} while (0)



#define uvc_printk(level, msg...) \

	printk(level "uvcvideo: " msg)

#define uvcg_dbg(f, fmt, args...) \

	dev_dbg(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)

#define uvcg_info(f, fmt, args...) \

	dev_info(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)

#define uvcg_err(f, fmt, args...) \

	dev_err(&(f)->config->cdev->gadget->dev, "%s: " fmt, (f)->name, ##args)



/* ------------------------------------------------------------------------

 * Driver specific constants
@@ -73,6 +72,7 @@ extern unsigned int uvc_gadget_trace_param; 
 */



struct uvc_video {

	struct uvc_device *uvc;

	struct usb_ep *ep;



	/* Frame parameters */

drivers/usb/gadget/function/uvc_configfs.c

+668 −500

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