2 * USB RedRat3 IR Transceiver rc-core driver
4 * Copyright (c) 2011 by Jarod Wilson <jarod@redhat.com>
5 * based heavily on the work of Stephen Cox, with additional
6 * help from RedRat Ltd.
8 * This driver began life based an an old version of the first-generation
9 * lirc_mceusb driver from the lirc 0.7.2 distribution. It was then
10 * significantly rewritten by Stephen Cox with the aid of RedRat Ltd's
13 * The driver was then ported to rc-core and significantly rewritten again,
14 * by Jarod, using the in-kernel mceusb driver as a guide, after an initial
15 * port effort was started by Stephen.
18 * - fix lirc not showing repeats properly
21 * The RedRat3 is a USB transceiver with both send & receive,
22 * with 2 separate sensors available for receive to enable
23 * both good long range reception for general use, and good
24 * short range reception when required for learning a signal.
26 * http://www.redrat.co.uk/
28 * It uses its own little protocol to communicate, the required
29 * parts of which are embedded within this driver.
32 * This program is free software; you can redistribute it and/or modify
33 * it under the terms of the GNU General Public License as published by
34 * the Free Software Foundation; either version 2 of the License, or
35 * (at your option) any later version.
37 * This program is distributed in the hope that it will be useful,
38 * but WITHOUT ANY WARRANTY; without even the implied warranty of
39 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
40 * GNU General Public License for more details.
42 * You should have received a copy of the GNU General Public License
43 * along with this program; if not, write to the Free Software
44 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
48 #include <asm/unaligned.h>
49 #include <linux/device.h>
50 #include <linux/leds.h>
51 #include <linux/module.h>
52 #include <linux/slab.h>
53 #include <linux/usb.h>
54 #include <linux/usb/input.h>
55 #include <media/rc-core.h>
57 /* Driver Information */
58 #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>"
59 #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox"
60 #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver"
61 #define DRIVER_NAME "redrat3"
63 /* bulk data transfer types */
64 #define RR3_ERROR 0x01
65 #define RR3_MOD_SIGNAL_IN 0x20
66 #define RR3_MOD_SIGNAL_OUT 0x21
68 /* Get the RR firmware version */
69 #define RR3_FW_VERSION 0xb1
70 #define RR3_FW_VERSION_LEN 64
71 /* Send encoded signal bulk-sent earlier*/
72 #define RR3_TX_SEND_SIGNAL 0xb3
73 #define RR3_SET_IR_PARAM 0xb7
74 #define RR3_GET_IR_PARAM 0xb8
75 /* Blink the red LED on the device */
76 #define RR3_BLINK_LED 0xb9
77 /* Read serial number of device */
78 #define RR3_READ_SER_NO 0xba
79 #define RR3_SER_NO_LEN 4
80 /* Start capture with the RC receiver */
81 #define RR3_RC_DET_ENABLE 0xbb
82 /* Stop capture with the RC receiver */
83 #define RR3_RC_DET_DISABLE 0xbc
84 /* Return the status of RC detector capture */
85 #define RR3_RC_DET_STATUS 0xbd
87 #define RR3_RESET 0xa0
89 /* Max number of lengths in the signal. */
90 #define RR3_IR_IO_MAX_LENGTHS 0x01
91 /* Periods to measure mod. freq. */
92 #define RR3_IR_IO_PERIODS_MF 0x02
93 /* Size of memory for main signal data */
94 #define RR3_IR_IO_SIG_MEM_SIZE 0x03
95 /* Delta value when measuring lengths */
96 #define RR3_IR_IO_LENGTH_FUZZ 0x04
97 /* Timeout for end of signal detection */
98 #define RR3_IR_IO_SIG_TIMEOUT 0x05
99 /* Minimum value for pause recognition. */
100 #define RR3_IR_IO_MIN_PAUSE 0x06
102 /* Clock freq. of EZ-USB chip */
103 #define RR3_CLK 24000000
104 /* Clock periods per timer count */
105 #define RR3_CLK_PER_COUNT 12
106 /* (RR3_CLK / RR3_CLK_PER_COUNT) */
107 #define RR3_CLK_CONV_FACTOR 2000000
108 /* USB bulk-in IR data endpoint address */
109 #define RR3_BULK_IN_EP_ADDR 0x82
111 /* Size of the fixed-length portion of the signal */
112 #define RR3_DRIVER_MAXLENS 128
113 #define RR3_MAX_SIG_SIZE 512
114 #define RR3_TIME_UNIT 50
115 #define RR3_END_OF_SIGNAL 0x7f
116 #define RR3_TX_TRAILER_LEN 2
117 #define RR3_RX_MIN_TIMEOUT 5
118 #define RR3_RX_MAX_TIMEOUT 2000
120 /* The 8051's CPUCS Register address */
121 #define RR3_CPUCS_REG_ADDR 0x7f92
123 #define USB_RR3USB_VENDOR_ID 0x112a
124 #define USB_RR3USB_PRODUCT_ID 0x0001
125 #define USB_RR3IIUSB_PRODUCT_ID 0x0005
127 struct redrat3_header {
129 __be16 transfer_type;
132 /* sending and receiving irdata */
133 struct redrat3_irdata {
134 struct redrat3_header header;
136 __be16 mod_freq_count;
143 __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */
144 __u8 sigdata[RR3_MAX_SIG_SIZE];
147 /* firmware errors */
148 struct redrat3_error {
149 struct redrat3_header header;
153 /* table of devices that work with this driver */
154 static struct usb_device_id redrat3_dev_table[] = {
155 /* Original version of the RedRat3 */
156 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)},
157 /* Second Version/release of the RedRat3 - RetRat3-II */
158 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)},
159 {} /* Terminating entry */
162 /* Structure to hold all of our device specific stuff */
164 /* core device bits */
169 struct led_classdev led;
171 struct usb_ctrlrequest flash_control;
172 struct urb *flash_urb;
175 /* save off the usb device pointer */
176 struct usb_device *udev;
178 /* the receive endpoint */
179 struct usb_endpoint_descriptor *ep_in;
180 /* the buffer to receive data */
182 /* urb used to read ir data */
183 struct urb *read_urb;
185 /* the send endpoint */
186 struct usb_endpoint_descriptor *ep_out;
191 /* rx signal timeout timer */
192 struct timer_list rx_timeout;
195 /* Is the device currently transmitting?*/
198 /* store for current packet */
199 struct redrat3_irdata irdata;
209 * redrat3_issue_async
211 * Issues an async read to the ir data in port..
212 * sets the callback to be redrat3_handle_async
214 static void redrat3_issue_async(struct redrat3_dev *rr3)
218 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC);
221 "%s: receive request FAILED! (res %d, len %d)\n",
222 __func__, res, rr3->read_urb->transfer_buffer_length);
225 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
227 if (!rr3->transmitting && (code != 0x40))
228 dev_info(rr3->dev, "fw error code 0x%02x: ", code);
232 pr_cont("No Error\n");
235 /* Codes 0x20 through 0x2f are IR Firmware Errors */
237 pr_cont("Initial signal pulse not long enough "
238 "to measure carrier frequency\n");
241 pr_cont("Not enough length values allocated for signal\n");
244 pr_cont("Not enough memory allocated for signal data\n");
247 pr_cont("Too many signal repeats\n");
250 pr_cont("Insufficient memory available for IR signal "
251 "data memory allocation\n");
254 pr_cont("Insufficient memory available "
255 "for IrDa signal data memory allocation\n");
258 /* Codes 0x30 through 0x3f are USB Firmware Errors */
260 pr_cont("Insufficient memory available for bulk "
261 "transfer structure\n");
265 * Other error codes... These are primarily errors that can occur in
266 * the control messages sent to the redrat
269 if (!rr3->transmitting)
270 pr_cont("Signal capture has been terminated\n");
273 pr_cont("Attempt to set/get and unknown signal I/O "
274 "algorithm parameter\n");
277 pr_cont("Signal capture already started\n");
281 pr_cont("Unknown Error\n");
286 static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata)
289 u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count);
291 if (mod_freq_count != 0)
292 mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) /
293 (mod_freq_count * RR3_CLK_PER_COUNT);
298 /* this function scales down the figures for the same result... */
299 static u32 redrat3_len_to_us(u32 length)
301 u32 biglen = length * 1000;
302 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
303 u32 result = (u32) (biglen / divisor);
305 /* don't allow zero lengths to go back, breaks lirc */
306 return result ? result : 1;
310 * convert us back into redrat3 lengths
312 * length * 1000 length * 1000000
313 * ------------- = ---------------- = micro
314 * rr3clk / 1000 rr3clk
316 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000
317 * ----- = 4 ----- = 6 -------------- = len ---------------------
320 static u32 redrat3_us_to_len(u32 microsec)
325 microsec &= IR_MAX_DURATION;
326 divisor = (RR3_CLK_CONV_FACTOR / 1000);
327 result = (u32)(microsec * divisor) / 1000;
329 /* don't allow zero lengths to go back, breaks lirc */
330 return result ? result : 1;
333 /* timer callback to send reset event */
334 static void redrat3_rx_timeout(unsigned long data)
336 struct redrat3_dev *rr3 = (struct redrat3_dev *)data;
338 dev_dbg(rr3->dev, "calling ir_raw_event_reset\n");
339 ir_raw_event_reset(rr3->rc);
342 static void redrat3_process_ir_data(struct redrat3_dev *rr3)
344 DEFINE_IR_RAW_EVENT(rawir);
346 unsigned i, trailer = 0;
347 unsigned sig_size, single_len, offset, val;
352 pr_err("%s called with no context!\n", __func__);
358 /* Make sure we reset the IR kfifo after a bit of inactivity */
359 delay = usecs_to_jiffies(rr3->hw_timeout);
360 mod_timer(&rr3->rx_timeout, jiffies + delay);
362 mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);
363 dev_dbg(dev, "Got mod_freq of %u\n", mod_freq);
365 /* process each rr3 encoded byte into an int */
366 sig_size = be16_to_cpu(rr3->irdata.sig_size);
367 for (i = 0; i < sig_size; i++) {
368 offset = rr3->irdata.sigdata[i];
369 val = get_unaligned_be16(&rr3->irdata.lens[offset]);
370 single_len = redrat3_len_to_us(val);
372 /* we should always get pulse/space/pulse/space samples */
378 rawir.duration = US_TO_NS(single_len);
379 /* Save initial pulse length to fudge trailer */
381 trailer = rawir.duration;
382 /* cap the value to IR_MAX_DURATION */
383 rawir.duration &= IR_MAX_DURATION;
385 dev_dbg(dev, "storing %s with duration %d (i: %d)\n",
386 rawir.pulse ? "pulse" : "space", rawir.duration, i);
387 ir_raw_event_store_with_filter(rr3->rc, &rawir);
390 /* add a trailing space, if need be */
393 /* this duration is made up, and may not be ideal... */
394 if (trailer < US_TO_NS(1000))
395 rawir.duration = US_TO_NS(2800);
397 rawir.duration = trailer;
398 dev_dbg(dev, "storing trailing space with duration %d\n",
400 ir_raw_event_store_with_filter(rr3->rc, &rawir);
403 dev_dbg(dev, "calling ir_raw_event_handle\n");
404 ir_raw_event_handle(rr3->rc);
407 /* Util fn to send rr3 cmds */
408 static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
410 struct usb_device *udev;
414 data = kzalloc(sizeof(u8), GFP_KERNEL);
419 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
420 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
421 0x0000, 0x0000, data, sizeof(u8), HZ * 10);
424 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
425 __func__, res, *data);
435 /* Enables the long range detector and starts async receive */
436 static int redrat3_enable_detector(struct redrat3_dev *rr3)
438 struct device *dev = rr3->dev;
441 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
443 dev_dbg(dev, "%s: unexpected ret of %d\n",
446 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
448 dev_err(dev, "%s: detector status: %d, should be 1\n",
453 redrat3_issue_async(rr3);
458 static inline void redrat3_delete(struct redrat3_dev *rr3,
459 struct usb_device *udev)
461 usb_kill_urb(rr3->read_urb);
462 usb_kill_urb(rr3->flash_urb);
463 usb_free_urb(rr3->read_urb);
464 usb_free_urb(rr3->flash_urb);
465 usb_free_coherent(udev, le16_to_cpu(rr3->ep_in->wMaxPacketSize),
466 rr3->bulk_in_buf, rr3->dma_in);
471 static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
474 u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
478 tmp = kzalloc(len, GFP_KERNEL);
480 dev_warn(rr3->dev, "Memory allocation faillure\n");
484 pipe = usb_rcvctrlpipe(rr3->udev, 0);
485 ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
486 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
487 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
489 dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
491 timeout = redrat3_len_to_us(be32_to_cpup(tmp));
493 dev_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
501 static void redrat3_reset(struct redrat3_dev *rr3)
503 struct usb_device *udev = rr3->udev;
504 struct device *dev = rr3->dev;
505 int rc, rxpipe, txpipe;
507 int len = sizeof(u8);
509 rxpipe = usb_rcvctrlpipe(udev, 0);
510 txpipe = usb_sndctrlpipe(udev, 0);
512 val = kmalloc(len, GFP_KERNEL);
514 dev_err(dev, "Memory allocation failure\n");
519 rc = usb_control_msg(udev, rxpipe, RR3_RESET,
520 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
521 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
522 dev_dbg(dev, "reset returned 0x%02x\n", rc);
525 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
526 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
527 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
528 dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
530 *val = RR3_DRIVER_MAXLENS;
531 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
532 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
533 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
534 dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
539 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
544 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL);
546 dev_err(rr3->dev, "Memory allocation failure\n");
550 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
552 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
553 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
556 dev_info(rr3->dev, "Firmware rev: %s", buffer);
558 dev_err(rr3->dev, "Problem fetching firmware ID\n");
563 static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len)
565 struct redrat3_header *header = rr3->bulk_in_buf;
566 unsigned pktlen, pkttype;
568 /* grab the Length and type of transfer */
569 pktlen = be16_to_cpu(header->length);
570 pkttype = be16_to_cpu(header->transfer_type);
572 if (pktlen > sizeof(rr3->irdata)) {
573 dev_warn(rr3->dev, "packet length %u too large\n", pktlen);
579 if (len >= sizeof(struct redrat3_error)) {
580 struct redrat3_error *error = rr3->bulk_in_buf;
581 unsigned fw_error = be16_to_cpu(error->fw_error);
582 redrat3_dump_fw_error(rr3, fw_error);
586 case RR3_MOD_SIGNAL_IN:
587 memcpy(&rr3->irdata, rr3->bulk_in_buf, len);
588 rr3->bytes_read = len;
589 dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
590 rr3->bytes_read, pktlen);
594 dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n",
595 pkttype, len, pktlen);
600 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len)
602 void *irdata = &rr3->irdata;
604 if (len + rr3->bytes_read > sizeof(rr3->irdata)) {
605 dev_warn(rr3->dev, "too much data for packet\n");
610 memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len);
612 rr3->bytes_read += len;
613 dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read,
614 be16_to_cpu(rr3->irdata.header.length));
617 /* gather IR data from incoming urb, process it when we have enough */
618 static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len)
620 struct device *dev = rr3->dev;
624 if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) {
625 redrat3_read_packet_start(rr3, len);
626 } else if (rr3->bytes_read != 0) {
627 redrat3_read_packet_continue(rr3, len);
628 } else if (rr3->bytes_read == 0) {
629 dev_err(dev, "error: no packet data read\n");
634 if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) +
635 sizeof(struct redrat3_header))
636 /* we're still accumulating data */
639 /* if we get here, we've got IR data to decode */
640 pkttype = be16_to_cpu(rr3->irdata.header.transfer_type);
641 if (pkttype == RR3_MOD_SIGNAL_IN)
642 redrat3_process_ir_data(rr3);
644 dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n",
652 /* callback function from USB when async USB request has completed */
653 static void redrat3_handle_async(struct urb *urb)
655 struct redrat3_dev *rr3;
663 pr_err("%s called with invalid context!\n", __func__);
668 switch (urb->status) {
670 ret = redrat3_get_ir_data(rr3, urb->actual_length);
672 /* no error, prepare to read more */
673 redrat3_issue_async(rr3);
685 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
691 static u16 mod_freq_to_val(unsigned int mod_freq)
695 /* Clk used in mod. freq. generation is CLK24/4. */
696 return 65536 - (mult / mod_freq);
699 static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
701 struct redrat3_dev *rr3 = rcdev->priv;
702 struct device *dev = rr3->dev;
704 dev_dbg(dev, "Setting modulation frequency to %u", carrier);
708 rr3->carrier = carrier;
713 static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
716 struct redrat3_dev *rr3 = rcdev->priv;
717 struct device *dev = rr3->dev;
718 struct redrat3_irdata *irdata = NULL;
720 int lencheck, cur_sample_len, pipe;
721 int *sample_lens = NULL;
723 unsigned i, sendbuf_len;
725 if (rr3->transmitting) {
726 dev_warn(dev, "%s: transmitter already in use\n", __func__);
730 if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN)
733 /* rr3 will disable rc detector on transmit */
734 rr3->transmitting = true;
736 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
742 irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
748 for (i = 0; i < count; i++) {
749 cur_sample_len = redrat3_us_to_len(txbuf[i]);
750 if (cur_sample_len > 0xffff) {
751 dev_warn(dev, "transmit period of %uus truncated to %uus\n",
752 txbuf[i], redrat3_len_to_us(0xffff));
753 cur_sample_len = 0xffff;
755 for (lencheck = 0; lencheck < curlencheck; lencheck++) {
756 if (sample_lens[lencheck] == cur_sample_len)
759 if (lencheck == curlencheck) {
760 dev_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
761 i, txbuf[i], curlencheck, cur_sample_len);
762 if (curlencheck < RR3_DRIVER_MAXLENS) {
763 /* now convert the value to a proper
765 sample_lens[curlencheck] = cur_sample_len;
766 put_unaligned_be16(cur_sample_len,
767 &irdata->lens[curlencheck]);
774 irdata->sigdata[i] = lencheck;
777 irdata->sigdata[count] = RR3_END_OF_SIGNAL;
778 irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;
780 sendbuf_len = offsetof(struct redrat3_irdata,
781 sigdata[count + RR3_TX_TRAILER_LEN]);
782 /* fill in our packet header */
783 irdata->header.length = cpu_to_be16(sendbuf_len -
784 sizeof(struct redrat3_header));
785 irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);
786 irdata->pause = cpu_to_be32(redrat3_len_to_us(100));
787 irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));
788 irdata->no_lengths = curlencheck;
789 irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);
791 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
792 ret = usb_bulk_msg(rr3->udev, pipe, irdata,
793 sendbuf_len, &ret_len, 10 * HZ);
794 dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
796 /* now tell the hardware to transmit what we sent it */
797 pipe = usb_rcvctrlpipe(rr3->udev, 0);
798 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
799 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
800 0, 0, irdata, 2, HZ * 10);
803 dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
811 rr3->transmitting = false;
812 /* rr3 re-enables rc detector because it was enabled before */
817 static void redrat3_brightness_set(struct led_classdev *led_dev, enum
818 led_brightness brightness)
820 struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev,
823 if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) {
824 int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC);
826 dev_dbg(rr3->dev, "%s: unexpected ret of %d\n",
828 atomic_set(&rr3->flash, 0);
833 static void redrat3_led_complete(struct urb *urb)
835 struct redrat3_dev *rr3 = urb->context;
837 switch (urb->status) {
847 dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status);
851 rr3->led.brightness = LED_OFF;
852 atomic_dec(&rr3->flash);
855 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
857 struct device *dev = rr3->dev;
860 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
862 rc = rc_allocate_device();
864 dev_err(dev, "remote input dev allocation failed\n");
868 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s "
869 "Infrared Remote Transceiver (%04x:%04x)",
870 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "",
871 le16_to_cpu(rr3->udev->descriptor.idVendor), prod);
873 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
875 rc->input_name = rr3->name;
876 rc->input_phys = rr3->phys;
877 usb_to_input_id(rr3->udev, &rc->input_id);
878 rc->dev.parent = dev;
880 rc->driver_type = RC_DRIVER_IR_RAW;
881 rc->allowed_protocols = RC_BIT_ALL;
882 rc->timeout = US_TO_NS(2750);
883 rc->tx_ir = redrat3_transmit_ir;
884 rc->s_tx_carrier = redrat3_set_tx_carrier;
885 rc->driver_name = DRIVER_NAME;
886 rc->rx_resolution = US_TO_NS(2);
887 rc->map_name = RC_MAP_HAUPPAUGE;
889 ret = rc_register_device(rc);
891 dev_err(dev, "remote dev registration failed\n");
902 static int redrat3_dev_probe(struct usb_interface *intf,
903 const struct usb_device_id *id)
905 struct usb_device *udev = interface_to_usbdev(intf);
906 struct device *dev = &intf->dev;
907 struct usb_host_interface *uhi;
908 struct redrat3_dev *rr3;
909 struct usb_endpoint_descriptor *ep;
910 struct usb_endpoint_descriptor *ep_in = NULL;
911 struct usb_endpoint_descriptor *ep_out = NULL;
914 int retval = -ENOMEM;
916 uhi = intf->cur_altsetting;
918 /* find our bulk-in and bulk-out endpoints */
919 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
920 ep = &uhi->endpoint[i].desc;
921 addr = ep->bEndpointAddress;
922 attrs = ep->bmAttributes;
924 if ((ep_in == NULL) &&
925 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
926 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
927 USB_ENDPOINT_XFER_BULK)) {
928 dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
929 ep->bEndpointAddress);
930 /* data comes in on 0x82, 0x81 is for other data... */
931 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
935 if ((ep_out == NULL) &&
936 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
937 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
938 USB_ENDPOINT_XFER_BULK)) {
939 dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
940 ep->bEndpointAddress);
945 if (!ep_in || !ep_out) {
946 dev_err(dev, "Couldn't find both in and out endpoints\n");
951 /* allocate memory for our device state and initialize it */
952 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
954 dev_err(dev, "Memory allocation failure\n");
958 rr3->dev = &intf->dev;
960 /* set up bulk-in endpoint */
961 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
962 if (!rr3->read_urb) {
963 dev_err(dev, "Read urb allocation failure\n");
968 rr3->bulk_in_buf = usb_alloc_coherent(udev,
969 le16_to_cpu(ep_in->wMaxPacketSize), GFP_KERNEL, &rr3->dma_in);
970 if (!rr3->bulk_in_buf) {
971 dev_err(dev, "Read buffer allocation failure\n");
975 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
976 usb_fill_bulk_urb(rr3->read_urb, udev, pipe, rr3->bulk_in_buf,
977 le16_to_cpu(ep_in->wMaxPacketSize), redrat3_handle_async, rr3);
978 rr3->read_urb->transfer_dma = rr3->dma_in;
979 rr3->read_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
981 rr3->ep_out = ep_out;
985 redrat3_get_firmware_rev(rr3);
987 /* might be all we need to do? */
988 retval = redrat3_enable_detector(rr3);
992 /* store current hardware timeout, in us, will use for kfifo resets */
993 rr3->hw_timeout = redrat3_get_timeout(rr3);
995 /* default.. will get overridden by any sends with a freq defined */
996 rr3->carrier = 38000;
999 rr3->led.name = "redrat3:red:feedback";
1000 rr3->led.default_trigger = "rc-feedback";
1001 rr3->led.brightness_set = redrat3_brightness_set;
1002 retval = led_classdev_register(&intf->dev, &rr3->led);
1006 atomic_set(&rr3->flash, 0);
1007 rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
1008 if (!rr3->flash_urb) {
1010 goto led_free_error;
1013 /* setup packet is 'c0 b9 0000 0000 0001' */
1014 rr3->flash_control.bRequestType = 0xc0;
1015 rr3->flash_control.bRequest = RR3_BLINK_LED;
1016 rr3->flash_control.wLength = cpu_to_le16(1);
1018 usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
1019 (unsigned char *)&rr3->flash_control,
1020 &rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
1021 redrat3_led_complete, rr3);
1023 rr3->rc = redrat3_init_rc_dev(rr3);
1026 goto led_free_error;
1028 setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);
1030 /* we can register the device now, as it is ready */
1031 usb_set_intfdata(intf, rr3);
1036 led_classdev_unregister(&rr3->led);
1038 redrat3_delete(rr3, rr3->udev);
1041 dev_err(dev, "%s: retval = %x", __func__, retval);
1046 static void redrat3_dev_disconnect(struct usb_interface *intf)
1048 struct usb_device *udev = interface_to_usbdev(intf);
1049 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1054 usb_set_intfdata(intf, NULL);
1055 rc_unregister_device(rr3->rc);
1056 led_classdev_unregister(&rr3->led);
1057 del_timer_sync(&rr3->rx_timeout);
1058 redrat3_delete(rr3, udev);
1061 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
1063 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1065 led_classdev_suspend(&rr3->led);
1066 usb_kill_urb(rr3->read_urb);
1067 usb_kill_urb(rr3->flash_urb);
1071 static int redrat3_dev_resume(struct usb_interface *intf)
1073 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1075 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))
1077 led_classdev_resume(&rr3->led);
1081 static struct usb_driver redrat3_dev_driver = {
1082 .name = DRIVER_NAME,
1083 .probe = redrat3_dev_probe,
1084 .disconnect = redrat3_dev_disconnect,
1085 .suspend = redrat3_dev_suspend,
1086 .resume = redrat3_dev_resume,
1087 .reset_resume = redrat3_dev_resume,
1088 .id_table = redrat3_dev_table
1091 module_usb_driver(redrat3_dev_driver);
1093 MODULE_DESCRIPTION(DRIVER_DESC);
1094 MODULE_AUTHOR(DRIVER_AUTHOR);
1095 MODULE_AUTHOR(DRIVER_AUTHOR2);
1096 MODULE_LICENSE("GPL");
1097 MODULE_DEVICE_TABLE(usb, redrat3_dev_table);