1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * USB RedRat3 IR Transceiver rc-core driver
9  * This driver began life based on an old version of the first-generation
14  * The driver was then ported to rc-core and significantly rewritten again,
15  * by Jarod, using the in-kernel mceusb driver as a guide, after an initial
19  * - fix lirc not showing repeats properly
20  * --
23  * with 2 separate sensors available for receive to enable
31  * --
41 #include <media/rc-core.h>
57 /* Send encoded signal bulk-sent earlier*/
72 /* Return the status of RC detector capture */
90 /* Clock freq. of EZ-USB chip */
96 /* USB bulk-in wideband IR data endpoint address */
98 /* USB bulk-in narrowband IR data endpoint address */
101 /* Size of the fixed-length portion of the signal */
127 MODULE_PARM_DESC(length_fuzz, "Length Fuzz (0-127)");
138 MODULE_PARM_DESC(minimum_pause, "Minimum Pause in ms (2-30)");
149 MODULE_PARM_DESC(periods_measure_carrier, "Number of Periods to Measure Carrier (1-255)");
182 	/* Second Version/release of the RedRat3 - RetRat3-II */
238 	if (!rr3->transmitting && (code != 0x40))  in redrat3_dump_fw_error()
239 		dev_info(rr3->dev, "fw error code 0x%02x: ", code);  in redrat3_dump_fw_error()
276 		if (!rr3->transmitting)  in redrat3_dump_fw_error()
295 	u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count);  in redrat3_val_to_mod_freq()
298 		mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) /  in redrat3_val_to_mod_freq()
319  * ------------- = ---------------- = micro
323  * ----- = 4   ----- = 6    -------------- = len    ---------------------
346 	dev = rr3->dev;  in redrat3_process_ir_data()
348 	mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);  in redrat3_process_ir_data()
350 	if (mod_freq && rr3->wideband) {  in redrat3_process_ir_data()
356 		ir_raw_event_store(rr3->rc, &ev);  in redrat3_process_ir_data()
360 	sig_size = be16_to_cpu(rr3->irdata.sig_size);  in redrat3_process_ir_data()
362 		offset = rr3->irdata.sigdata[i];  in redrat3_process_ir_data()
363 		val = get_unaligned_be16(&rr3->irdata.lens[offset]);  in redrat3_process_ir_data()
378 		ir_raw_event_store_with_filter(rr3->rc, &rawir);  in redrat3_process_ir_data()
384 	rawir.duration = rr3->rc->timeout;  in redrat3_process_ir_data()
387 	ir_raw_event_store_with_filter(rr3->rc, &rawir);  in redrat3_process_ir_data()
390 	ir_raw_event_handle(rr3->rc);  in redrat3_process_ir_data()
402 		return -ENOMEM;  in redrat3_send_cmd()
404 	udev = rr3->udev;  in redrat3_send_cmd()
410 		dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",  in redrat3_send_cmd()
412 		res = -EIO;  in redrat3_send_cmd()
421 /* Enables the long range detector and starts async receive */
424 	struct device *dev = rr3->dev;  in redrat3_enable_detector()
434 		dev_err(dev, "%s: detector status: %d, should be 1\n",  in redrat3_enable_detector()
436 		return -EIO;  in redrat3_enable_detector()
439 	ret = usb_submit_urb(rr3->narrow_urb, GFP_KERNEL);  in redrat3_enable_detector()
441 		dev_err(rr3->dev, "narrow band urb failed: %d", ret);  in redrat3_enable_detector()
445 	ret = usb_submit_urb(rr3->wide_urb, GFP_KERNEL);  in redrat3_enable_detector()
447 		dev_err(rr3->dev, "wide band urb failed: %d", ret);  in redrat3_enable_detector()
455 	usb_kill_urb(rr3->narrow_urb);  in redrat3_delete()
456 	usb_kill_urb(rr3->wide_urb);  in redrat3_delete()
457 	usb_kill_urb(rr3->flash_urb);  in redrat3_delete()
458 	usb_kill_urb(rr3->learn_urb);  in redrat3_delete()
459 	usb_free_urb(rr3->narrow_urb);  in redrat3_delete()
460 	usb_free_urb(rr3->wide_urb);  in redrat3_delete()
461 	usb_free_urb(rr3->flash_urb);  in redrat3_delete()
462 	usb_free_urb(rr3->learn_urb);  in redrat3_delete()
463 	usb_free_coherent(udev, le16_to_cpu(rr3->ep_narrow->wMaxPacketSize),  in redrat3_delete()
464 			  rr3->bulk_in_buf, rr3->dma_in);  in redrat3_delete()
480 	pipe = usb_rcvctrlpipe(rr3->udev, 0);  in redrat3_get_timeout()
481 	ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,  in redrat3_get_timeout()
485 		dev_warn(rr3->dev, "Failed to read timeout from hardware\n");  in redrat3_get_timeout()
489 		dev_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);  in redrat3_get_timeout()
499 	struct redrat3_dev *rr3 = rc_dev->priv;  in redrat3_set_timeout()
500 	struct usb_device *udev = rr3->udev;  in redrat3_set_timeout()
501 	struct device *dev = rr3->dev;  in redrat3_set_timeout()
507 		return -ENOMEM;  in redrat3_set_timeout()
520 		ret = -EIO;  in redrat3_set_timeout()
529 	struct usb_device *udev = rr3->udev;  in redrat3_reset()
530 	struct device *dev = rr3->dev;  in redrat3_reset()
554 	*val = (65536 - (minimum_pause * 2000)) / 256;  in redrat3_reset()
585 	rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),  in redrat3_get_firmware_rev()
591 		dev_info(rr3->dev, "Firmware rev: %s", buffer);  in redrat3_get_firmware_rev()
593 		dev_err(rr3->dev, "Problem fetching firmware ID\n");  in redrat3_get_firmware_rev()
600 	struct redrat3_header *header = rr3->bulk_in_buf;  in redrat3_read_packet_start()
604 	pktlen = be16_to_cpu(header->length);  in redrat3_read_packet_start()
605 	pkttype = be16_to_cpu(header->transfer_type);  in redrat3_read_packet_start()
607 	if (pktlen > sizeof(rr3->irdata)) {  in redrat3_read_packet_start()
608 		dev_warn(rr3->dev, "packet length %u too large\n", pktlen);  in redrat3_read_packet_start()
615 			struct redrat3_error *error = rr3->bulk_in_buf;  in redrat3_read_packet_start()
616 			unsigned fw_error = be16_to_cpu(error->fw_error);  in redrat3_read_packet_start()
622 		memcpy(&rr3->irdata, rr3->bulk_in_buf, len);  in redrat3_read_packet_start()
623 		rr3->bytes_read = len;  in redrat3_read_packet_start()
624 		dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",  in redrat3_read_packet_start()
625 			rr3->bytes_read, pktlen);  in redrat3_read_packet_start()
629 		dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n",  in redrat3_read_packet_start()
637 	void *irdata = &rr3->irdata;  in redrat3_read_packet_continue()
639 	if (len + rr3->bytes_read > sizeof(rr3->irdata)) {  in redrat3_read_packet_continue()
640 		dev_warn(rr3->dev, "too much data for packet\n");  in redrat3_read_packet_continue()
641 		rr3->bytes_read = 0;  in redrat3_read_packet_continue()
645 	memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len);  in redrat3_read_packet_continue()
647 	rr3->bytes_read += len;  in redrat3_read_packet_continue()
648 	dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read,  in redrat3_read_packet_continue()
649 				 be16_to_cpu(rr3->irdata.header.length));  in redrat3_read_packet_continue()
655 	struct device *dev = rr3->dev;  in redrat3_get_ir_data()
659 	if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) {  in redrat3_get_ir_data()
661 	} else if (rr3->bytes_read != 0) {  in redrat3_get_ir_data()
663 	} else if (rr3->bytes_read == 0) {  in redrat3_get_ir_data()
665 		ret = -ENODATA;  in redrat3_get_ir_data()
669 	if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) +  in redrat3_get_ir_data()
675 	pkttype = be16_to_cpu(rr3->irdata.header.transfer_type);  in redrat3_get_ir_data()
679 		dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n",  in redrat3_get_ir_data()
683 	rr3->bytes_read = 0;  in redrat3_get_ir_data()
690 	struct redrat3_dev *rr3 = urb->context;  in redrat3_handle_async()
693 	switch (urb->status) {  in redrat3_handle_async()
695 		ret = redrat3_get_ir_data(rr3, urb->actual_length);  in redrat3_handle_async()
696 		if (!ret && rr3->wideband && !rr3->learn_urb->hcpriv) {  in redrat3_handle_async()
697 			ret = usb_submit_urb(rr3->learn_urb, GFP_ATOMIC);  in redrat3_handle_async()
699 				dev_err(rr3->dev, "Failed to submit learning urb: %d",  in redrat3_handle_async()
707 				dev_err(rr3->dev, "Failed to resubmit urb: %d",  in redrat3_handle_async()
712 	case -ECONNRESET:  in redrat3_handle_async()
713 	case -ENOENT:  in redrat3_handle_async()
714 	case -ESHUTDOWN:  in redrat3_handle_async()
718 	case -EPIPE:  in redrat3_handle_async()
720 		dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);  in redrat3_handle_async()
721 		rr3->bytes_read = 0;  in redrat3_handle_async()
731 	return 65536 - (mult / mod_freq);  in mod_freq_to_val()
736 	struct redrat3_dev *rr3 = rcdev->priv;  in redrat3_set_tx_carrier()
737 	struct device *dev = rr3->dev;  in redrat3_set_tx_carrier()
741 		return -EINVAL;  in redrat3_set_tx_carrier()
743 	rr3->carrier = carrier;  in redrat3_set_tx_carrier()
751 	struct redrat3_dev *rr3 = rcdev->priv;  in redrat3_transmit_ir()
752 	struct device *dev = rr3->dev;  in redrat3_transmit_ir()
760 	if (rr3->transmitting) {  in redrat3_transmit_ir()
762 		return -EAGAIN;  in redrat3_transmit_ir()
765 	if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN)  in redrat3_transmit_ir()
766 		return -EINVAL;  in redrat3_transmit_ir()
768 	/* rr3 will disable rc detector on transmit */  in redrat3_transmit_ir()
769 	rr3->transmitting = true;  in redrat3_transmit_ir()
775 		return -ENOMEM;  in redrat3_transmit_ir()
779 		ret = -ENOMEM;  in redrat3_transmit_ir()
802 						&irdata->lens[curlencheck]);  in redrat3_transmit_ir()
805 				ret = -EINVAL;  in redrat3_transmit_ir()
809 		irdata->sigdata[i] = lencheck;  in redrat3_transmit_ir()
812 	irdata->sigdata[count] = RR3_END_OF_SIGNAL;  in redrat3_transmit_ir()
813 	irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;  in redrat3_transmit_ir()
818 	irdata->header.length = cpu_to_be16(sendbuf_len -  in redrat3_transmit_ir()
820 	irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);  in redrat3_transmit_ir()
821 	irdata->pause = cpu_to_be32(redrat3_len_to_us(100));  in redrat3_transmit_ir()
822 	irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));  in redrat3_transmit_ir()
823 	irdata->no_lengths = curlencheck;  in redrat3_transmit_ir()
824 	irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);  in redrat3_transmit_ir()
826 	pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);  in redrat3_transmit_ir()
827 	ret = usb_bulk_msg(rr3->udev, pipe, irdata,  in redrat3_transmit_ir()
832 	pipe = usb_rcvctrlpipe(rr3->udev, 0);  in redrat3_transmit_ir()
833 	ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,  in redrat3_transmit_ir()
846 	rr3->transmitting = false;  in redrat3_transmit_ir()
847 	/* rr3 re-enables rc detector because it was enabled before */  in redrat3_transmit_ir()
858 	if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) {  in redrat3_brightness_set()
859 		int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC);  in redrat3_brightness_set()
861 			dev_dbg(rr3->dev, "%s: unexpected ret of %d\n",  in redrat3_brightness_set()
863 			atomic_set(&rr3->flash, 0);  in redrat3_brightness_set()
868 static int redrat3_wideband_receiver(struct rc_dev *rcdev, int enable)  in redrat3_wideband_receiver()  argument
870 	struct redrat3_dev *rr3 = rcdev->priv;  in redrat3_wideband_receiver()
873 	rr3->wideband = enable != 0;  in redrat3_wideband_receiver()
875 	if (enable) {  in redrat3_wideband_receiver()
876 		ret = usb_submit_urb(rr3->learn_urb, GFP_KERNEL);  in redrat3_wideband_receiver()
878 			dev_err(rr3->dev, "Failed to submit learning urb: %d",  in redrat3_wideband_receiver()
887 	struct redrat3_dev *rr3 = urb->context;  in redrat3_learn_complete()
889 	switch (urb->status) {  in redrat3_learn_complete()
892 	case -ECONNRESET:  in redrat3_learn_complete()
893 	case -ENOENT:  in redrat3_learn_complete()
894 	case -ESHUTDOWN:  in redrat3_learn_complete()
897 	case -EPIPE:  in redrat3_learn_complete()
899 		dev_err(rr3->dev, "Error: learn urb status = %d", urb->status);  in redrat3_learn_complete()
906 	struct redrat3_dev *rr3 = urb->context;  in redrat3_led_complete()
908 	switch (urb->status) {  in redrat3_led_complete()
911 	case -ECONNRESET:  in redrat3_led_complete()
912 	case -ENOENT:  in redrat3_led_complete()
913 	case -ESHUTDOWN:  in redrat3_led_complete()
916 	case -EPIPE:  in redrat3_led_complete()
918 		dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status);  in redrat3_led_complete()
922 	rr3->led.brightness = LED_OFF;  in redrat3_led_complete()
923 	atomic_dec(&rr3->flash);  in redrat3_led_complete()
928 	struct device *dev = rr3->dev;  in redrat3_init_rc_dev()
931 	u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);  in redrat3_init_rc_dev()
937 	snprintf(rr3->name, sizeof(rr3->name),  in redrat3_init_rc_dev()
939 		 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "");  in redrat3_init_rc_dev()
941 	usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));  in redrat3_init_rc_dev()
943 	rc->device_name = rr3->name;  in redrat3_init_rc_dev()
944 	rc->input_phys = rr3->phys;  in redrat3_init_rc_dev()
945 	usb_to_input_id(rr3->udev, &rc->input_id);  in redrat3_init_rc_dev()
946 	rc->dev.parent = dev;  in redrat3_init_rc_dev()
947 	rc->priv = rr3;  in redrat3_init_rc_dev()
948 	rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;  in redrat3_init_rc_dev()
949 	rc->min_timeout = MS_TO_US(RR3_RX_MIN_TIMEOUT);  in redrat3_init_rc_dev()
950 	rc->max_timeout = MS_TO_US(RR3_RX_MAX_TIMEOUT);  in redrat3_init_rc_dev()
951 	rc->timeout = redrat3_get_timeout(rr3);  in redrat3_init_rc_dev()
952 	rc->s_timeout = redrat3_set_timeout;  in redrat3_init_rc_dev()
953 	rc->tx_ir = redrat3_transmit_ir;  in redrat3_init_rc_dev()
954 	rc->s_tx_carrier = redrat3_set_tx_carrier;  in redrat3_init_rc_dev()
955 	rc->s_carrier_report = redrat3_wideband_receiver;  in redrat3_init_rc_dev()
956 	rc->driver_name = DRIVER_NAME;  in redrat3_init_rc_dev()
957 	rc->rx_resolution = 2;  in redrat3_init_rc_dev()
958 	rc->map_name = RC_MAP_HAUPPAUGE;  in redrat3_init_rc_dev()
977 	struct device *dev = &intf->dev;  in redrat3_dev_probe()
986 	int retval = -ENOMEM;  in redrat3_dev_probe()
988 	uhi = intf->cur_altsetting;  in redrat3_dev_probe()
990 	/* find our bulk-in and bulk-out endpoints */  in redrat3_dev_probe()
991 	for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {  in redrat3_dev_probe()
992 		ep = &uhi->endpoint[i].desc;  in redrat3_dev_probe()
993 		addr = ep->bEndpointAddress;  in redrat3_dev_probe()
994 		attrs = ep->bmAttributes;  in redrat3_dev_probe()
999 			dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n",  in redrat3_dev_probe()
1000 				ep->bEndpointAddress);  in redrat3_dev_probe()
1002 			if (ep->bEndpointAddress == RR3_NARROW_IN_EP_ADDR)  in redrat3_dev_probe()
1004 			if (ep->bEndpointAddress == RR3_WIDE_IN_EP_ADDR)  in redrat3_dev_probe()
1012 			dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n",  in redrat3_dev_probe()
1013 				ep->bEndpointAddress);  in redrat3_dev_probe()
1020 		retval = -ENODEV;  in redrat3_dev_probe()
1029 	rr3->dev = &intf->dev;  in redrat3_dev_probe()
1030 	rr3->ep_narrow = ep_narrow;  in redrat3_dev_probe()
1031 	rr3->ep_out = ep_out;  in redrat3_dev_probe()
1032 	rr3->udev = udev;  in redrat3_dev_probe()
1034 	/* set up bulk-in endpoint */  in redrat3_dev_probe()
1035 	rr3->narrow_urb = usb_alloc_urb(0, GFP_KERNEL);  in redrat3_dev_probe()
1036 	if (!rr3->narrow_urb)  in redrat3_dev_probe()
1039 	rr3->wide_urb = usb_alloc_urb(0, GFP_KERNEL);  in redrat3_dev_probe()
1040 	if (!rr3->wide_urb)  in redrat3_dev_probe()
1043 	rr3->bulk_in_buf = usb_alloc_coherent(udev,  in redrat3_dev_probe()
1044 		le16_to_cpu(ep_narrow->wMaxPacketSize),  in redrat3_dev_probe()
1045 		GFP_KERNEL, &rr3->dma_in);  in redrat3_dev_probe()
1046 	if (!rr3->bulk_in_buf)  in redrat3_dev_probe()
1049 	pipe = usb_rcvbulkpipe(udev, ep_narrow->bEndpointAddress);  in redrat3_dev_probe()
1050 	usb_fill_bulk_urb(rr3->narrow_urb, udev, pipe, rr3->bulk_in_buf,  in redrat3_dev_probe()
1051 		le16_to_cpu(ep_narrow->wMaxPacketSize),  in redrat3_dev_probe()
1053 	rr3->narrow_urb->transfer_dma = rr3->dma_in;  in redrat3_dev_probe()
1054 	rr3->narrow_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;  in redrat3_dev_probe()
1056 	pipe = usb_rcvbulkpipe(udev, ep_wide->bEndpointAddress);  in redrat3_dev_probe()
1057 	usb_fill_bulk_urb(rr3->wide_urb, udev, pipe, rr3->bulk_in_buf,  in redrat3_dev_probe()
1058 		le16_to_cpu(ep_narrow->wMaxPacketSize),  in redrat3_dev_probe()
1060 	rr3->wide_urb->transfer_dma = rr3->dma_in;  in redrat3_dev_probe()
1061 	rr3->wide_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;  in redrat3_dev_probe()
1067 	rr3->carrier = 38000;  in redrat3_dev_probe()
1069 	atomic_set(&rr3->flash, 0);  in redrat3_dev_probe()
1070 	rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);  in redrat3_dev_probe()
1071 	if (!rr3->flash_urb)  in redrat3_dev_probe()
1075 	rr3->learn_urb = usb_alloc_urb(0, GFP_KERNEL);  in redrat3_dev_probe()
1076 	if (!rr3->learn_urb)  in redrat3_dev_probe()
1080 	rr3->learn_control.bRequestType = 0xc0;  in redrat3_dev_probe()
1081 	rr3->learn_control.bRequest = RR3_MODSIG_CAPTURE;  in redrat3_dev_probe()
1082 	rr3->learn_control.wLength = cpu_to_le16(1);  in redrat3_dev_probe()
1084 	usb_fill_control_urb(rr3->learn_urb, udev, usb_rcvctrlpipe(udev, 0),  in redrat3_dev_probe()
1085 			(unsigned char *)&rr3->learn_control,  in redrat3_dev_probe()
1086 			&rr3->learn_buf, sizeof(rr3->learn_buf),  in redrat3_dev_probe()
1090 	rr3->flash_control.bRequestType = 0xc0;  in redrat3_dev_probe()
1091 	rr3->flash_control.bRequest = RR3_BLINK_LED;  in redrat3_dev_probe()
1092 	rr3->flash_control.wLength = cpu_to_le16(1);  in redrat3_dev_probe()
1094 	usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),  in redrat3_dev_probe()
1095 			(unsigned char *)&rr3->flash_control,  in redrat3_dev_probe()
1096 			&rr3->flash_in_buf, sizeof(rr3->flash_in_buf),  in redrat3_dev_probe()
1100 	rr3->led.name = "redrat3:red:feedback";  in redrat3_dev_probe()
1101 	rr3->led.default_trigger = "rc-feedback";  in redrat3_dev_probe()
1102 	rr3->led.brightness_set = redrat3_brightness_set;  in redrat3_dev_probe()
1103 	retval = led_classdev_register(&intf->dev, &rr3->led);  in redrat3_dev_probe()
1107 	rr3->rc = redrat3_init_rc_dev(rr3);  in redrat3_dev_probe()
1108 	if (!rr3->rc) {  in redrat3_dev_probe()
1109 		retval = -ENOMEM;  in redrat3_dev_probe()
1124 	led_classdev_unregister(&rr3->led);  in redrat3_dev_probe()
1126 	redrat3_delete(rr3, rr3->udev);  in redrat3_dev_probe()
1138 	rc_unregister_device(rr3->rc);  in redrat3_dev_disconnect()
1139 	led_classdev_unregister(&rr3->led);  in redrat3_dev_disconnect()
1147 	led_classdev_suspend(&rr3->led);  in redrat3_dev_suspend()
1148 	usb_kill_urb(rr3->narrow_urb);  in redrat3_dev_suspend()
1149 	usb_kill_urb(rr3->wide_urb);  in redrat3_dev_suspend()
1150 	usb_kill_urb(rr3->flash_urb);  in redrat3_dev_suspend()
1158 	if (usb_submit_urb(rr3->narrow_urb, GFP_NOIO))  in redrat3_dev_resume()
1159 		return -EIO;  in redrat3_dev_resume()
1160 	if (usb_submit_urb(rr3->wide_urb, GFP_NOIO))  in redrat3_dev_resume()
1161 		return -EIO;  in redrat3_dev_resume()
1162 	led_classdev_resume(&rr3->led);  in redrat3_dev_resume()