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/module.h>
51 #include <linux/slab.h>
52 #include <linux/usb.h>
53 #include <linux/usb/input.h>
54 #include <media/rc-core.h>
56 /* Driver Information */
57 #define DRIVER_VERSION "0.70"
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 /* module parameters */
64 #ifdef CONFIG_USB_DEBUG
70 #define RR3_DEBUG_STANDARD 0x1
71 #define RR3_DEBUG_FUNCTION_TRACE 0x2
73 #define rr3_dbg(dev, fmt, ...) \
75 if (debug & RR3_DEBUG_STANDARD) \
76 dev_info(dev, fmt, ## __VA_ARGS__); \
79 #define rr3_ftr(dev, fmt, ...) \
81 if (debug & RR3_DEBUG_FUNCTION_TRACE) \
82 dev_info(dev, fmt, ## __VA_ARGS__); \
85 /* bulk data transfer types */
86 #define RR3_ERROR 0x01
87 #define RR3_MOD_SIGNAL_IN 0x20
88 #define RR3_MOD_SIGNAL_OUT 0x21
90 /* Get the RR firmware version */
91 #define RR3_FW_VERSION 0xb1
92 #define RR3_FW_VERSION_LEN 64
93 /* Send encoded signal bulk-sent earlier*/
94 #define RR3_TX_SEND_SIGNAL 0xb3
95 #define RR3_SET_IR_PARAM 0xb7
96 #define RR3_GET_IR_PARAM 0xb8
97 /* Blink the red LED on the device */
98 #define RR3_BLINK_LED 0xb9
99 /* Read serial number of device */
100 #define RR3_READ_SER_NO 0xba
101 #define RR3_SER_NO_LEN 4
102 /* Start capture with the RC receiver */
103 #define RR3_RC_DET_ENABLE 0xbb
104 /* Stop capture with the RC receiver */
105 #define RR3_RC_DET_DISABLE 0xbc
106 /* Return the status of RC detector capture */
107 #define RR3_RC_DET_STATUS 0xbd
109 #define RR3_RESET 0xa0
111 /* Max number of lengths in the signal. */
112 #define RR3_IR_IO_MAX_LENGTHS 0x01
113 /* Periods to measure mod. freq. */
114 #define RR3_IR_IO_PERIODS_MF 0x02
115 /* Size of memory for main signal data */
116 #define RR3_IR_IO_SIG_MEM_SIZE 0x03
117 /* Delta value when measuring lengths */
118 #define RR3_IR_IO_LENGTH_FUZZ 0x04
119 /* Timeout for end of signal detection */
120 #define RR3_IR_IO_SIG_TIMEOUT 0x05
121 /* Minumum value for pause recognition. */
122 #define RR3_IR_IO_MIN_PAUSE 0x06
124 /* Clock freq. of EZ-USB chip */
125 #define RR3_CLK 24000000
126 /* Clock periods per timer count */
127 #define RR3_CLK_PER_COUNT 12
128 /* (RR3_CLK / RR3_CLK_PER_COUNT) */
129 #define RR3_CLK_CONV_FACTOR 2000000
130 /* USB bulk-in IR data endpoint address */
131 #define RR3_BULK_IN_EP_ADDR 0x82
133 /* Size of the fixed-length portion of the signal */
134 #define RR3_DRIVER_MAXLENS 128
135 #define RR3_MAX_SIG_SIZE 512
136 #define RR3_TIME_UNIT 50
137 #define RR3_END_OF_SIGNAL 0x7f
138 #define RR3_TX_TRAILER_LEN 2
139 #define RR3_RX_MIN_TIMEOUT 5
140 #define RR3_RX_MAX_TIMEOUT 2000
142 /* The 8051's CPUCS Register address */
143 #define RR3_CPUCS_REG_ADDR 0x7f92
145 #define USB_RR3USB_VENDOR_ID 0x112a
146 #define USB_RR3USB_PRODUCT_ID 0x0001
147 #define USB_RR3IIUSB_PRODUCT_ID 0x0005
149 struct redrat3_header {
151 __be16 transfer_type;
154 /* sending and receiving irdata */
155 struct redrat3_irdata {
156 struct redrat3_header header;
158 __be16 mod_freq_count;
165 __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */
166 __u8 sigdata[RR3_MAX_SIG_SIZE];
169 /* firmware errors */
170 struct redrat3_error {
171 struct redrat3_header header;
175 /* table of devices that work with this driver */
176 static struct usb_device_id redrat3_dev_table[] = {
177 /* Original version of the RedRat3 */
178 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)},
179 /* Second Version/release of the RedRat3 - RetRat3-II */
180 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)},
181 {} /* Terminating entry */
184 /* Structure to hold all of our device specific stuff */
186 /* core device bits */
190 /* save off the usb device pointer */
191 struct usb_device *udev;
193 /* the receive endpoint */
194 struct usb_endpoint_descriptor *ep_in;
195 /* the buffer to receive data */
197 /* urb used to read ir data */
198 struct urb *read_urb;
200 /* the send endpoint */
201 struct usb_endpoint_descriptor *ep_out;
202 /* the buffer to send data */
203 unsigned char *bulk_out_buf;
204 /* the urb used to send data */
205 struct urb *write_urb;
211 /* rx signal timeout timer */
212 struct timer_list rx_timeout;
215 /* is the detector enabled*/
217 /* Is the device currently transmitting?*/
220 /* store for current packet */
221 struct redrat3_irdata irdata;
231 * redrat3_issue_async
233 * Issues an async read to the ir data in port..
234 * sets the callback to be redrat3_handle_async
236 static void redrat3_issue_async(struct redrat3_dev *rr3)
240 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
242 memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize);
243 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC);
245 rr3_dbg(rr3->dev, "%s: receive request FAILED! "
246 "(res %d, len %d)\n", __func__, res,
247 rr3->read_urb->transfer_buffer_length);
250 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
252 if (!rr3->transmitting && (code != 0x40))
253 dev_info(rr3->dev, "fw error code 0x%02x: ", code);
257 pr_cont("No Error\n");
260 /* Codes 0x20 through 0x2f are IR Firmware Errors */
262 pr_cont("Initial signal pulse not long enough "
263 "to measure carrier frequency\n");
266 pr_cont("Not enough length values allocated for signal\n");
269 pr_cont("Not enough memory allocated for signal data\n");
272 pr_cont("Too many signal repeats\n");
275 pr_cont("Insufficient memory available for IR signal "
276 "data memory allocation\n");
279 pr_cont("Insufficient memory available "
280 "for IrDa signal data memory allocation\n");
283 /* Codes 0x30 through 0x3f are USB Firmware Errors */
285 pr_cont("Insufficient memory available for bulk "
286 "transfer structure\n");
290 * Other error codes... These are primarily errors that can occur in
291 * the control messages sent to the redrat
294 if (!rr3->transmitting)
295 pr_cont("Signal capture has been terminated\n");
298 pr_cont("Attempt to set/get and unknown signal I/O "
299 "algorithm parameter\n");
302 pr_cont("Signal capture already started\n");
306 pr_cont("Unknown Error\n");
311 static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata)
314 u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count);
316 if (mod_freq_count != 0)
317 mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) /
318 (mod_freq_count * RR3_CLK_PER_COUNT);
323 /* this function scales down the figures for the same result... */
324 static u32 redrat3_len_to_us(u32 length)
326 u32 biglen = length * 1000;
327 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
328 u32 result = (u32) (biglen / divisor);
330 /* don't allow zero lengths to go back, breaks lirc */
331 return result ? result : 1;
335 * convert us back into redrat3 lengths
337 * length * 1000 length * 1000000
338 * ------------- = ---------------- = micro
339 * rr3clk / 1000 rr3clk
341 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000
342 * ----- = 4 ----- = 6 -------------- = len ---------------------
345 static u32 redrat3_us_to_len(u32 microsec)
350 microsec &= IR_MAX_DURATION;
351 divisor = (RR3_CLK_CONV_FACTOR / 1000);
352 result = (u32)(microsec * divisor) / 1000;
354 /* don't allow zero lengths to go back, breaks lirc */
355 return result ? result : 1;
358 /* timer callback to send reset event */
359 static void redrat3_rx_timeout(unsigned long data)
361 struct redrat3_dev *rr3 = (struct redrat3_dev *)data;
363 rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n");
364 ir_raw_event_reset(rr3->rc);
367 static void redrat3_process_ir_data(struct redrat3_dev *rr3)
369 DEFINE_IR_RAW_EVENT(rawir);
372 unsigned sig_size, single_len, offset, val;
377 pr_err("%s called with no context!\n", __func__);
381 rr3_ftr(rr3->dev, "Entered %s\n", __func__);
385 /* Make sure we reset the IR kfifo after a bit of inactivity */
386 delay = usecs_to_jiffies(rr3->hw_timeout);
387 mod_timer(&rr3->rx_timeout, jiffies + delay);
389 mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);
390 rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq);
392 /* process each rr3 encoded byte into an int */
393 sig_size = be16_to_cpu(rr3->irdata.sig_size);
394 for (i = 0; i < sig_size; i++) {
395 offset = rr3->irdata.sigdata[i];
396 val = get_unaligned_be16(&rr3->irdata.lens[offset]);
397 single_len = redrat3_len_to_us(val);
399 /* we should always get pulse/space/pulse/space samples */
405 rawir.duration = US_TO_NS(single_len);
406 /* Save initial pulse length to fudge trailer */
408 trailer = rawir.duration;
409 /* cap the value to IR_MAX_DURATION */
410 rawir.duration &= IR_MAX_DURATION;
412 rr3_dbg(dev, "storing %s with duration %d (i: %d)\n",
413 rawir.pulse ? "pulse" : "space", rawir.duration, i);
414 ir_raw_event_store_with_filter(rr3->rc, &rawir);
417 /* add a trailing space, if need be */
420 /* this duration is made up, and may not be ideal... */
421 if (trailer < US_TO_NS(1000))
422 rawir.duration = US_TO_NS(2800);
424 rawir.duration = trailer;
425 rr3_dbg(dev, "storing trailing space with duration %d\n",
427 ir_raw_event_store_with_filter(rr3->rc, &rawir);
430 rr3_dbg(dev, "calling ir_raw_event_handle\n");
431 ir_raw_event_handle(rr3->rc);
434 /* Util fn to send rr3 cmds */
435 static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
437 struct usb_device *udev;
441 data = kzalloc(sizeof(u8), GFP_KERNEL);
446 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
447 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
448 0x0000, 0x0000, data, sizeof(u8), HZ * 10);
451 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
452 __func__, res, *data);
462 /* Enables the long range detector and starts async receive */
463 static int redrat3_enable_detector(struct redrat3_dev *rr3)
465 struct device *dev = rr3->dev;
468 rr3_ftr(dev, "Entering %s\n", __func__);
470 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
472 dev_dbg(dev, "%s: unexpected ret of %d\n",
475 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
477 dev_err(dev, "%s: detector status: %d, should be 1\n",
482 rr3->det_enabled = true;
483 redrat3_issue_async(rr3);
488 /* Disables the rr3 long range detector */
489 static void redrat3_disable_detector(struct redrat3_dev *rr3)
491 struct device *dev = rr3->dev;
494 rr3_ftr(dev, "Entering %s\n", __func__);
496 ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3);
498 dev_err(dev, "%s: failure!\n", __func__);
500 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
502 dev_warn(dev, "%s: detector status: %d, should be 0\n",
505 rr3->det_enabled = false;
508 static inline void redrat3_delete(struct redrat3_dev *rr3,
509 struct usb_device *udev)
511 rr3_ftr(rr3->dev, "%s cleaning up\n", __func__);
512 usb_kill_urb(rr3->read_urb);
513 usb_kill_urb(rr3->write_urb);
515 usb_free_urb(rr3->read_urb);
516 usb_free_urb(rr3->write_urb);
518 usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize,
519 rr3->bulk_in_buf, rr3->dma_in);
520 usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize,
521 rr3->bulk_out_buf, rr3->dma_out);
526 static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
529 u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
533 tmp = kzalloc(len, GFP_KERNEL);
535 dev_warn(rr3->dev, "Memory allocation faillure\n");
539 pipe = usb_rcvctrlpipe(rr3->udev, 0);
540 ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
541 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
542 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
544 dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
546 timeout = redrat3_len_to_us(be32_to_cpup(tmp));
548 rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
556 static void redrat3_reset(struct redrat3_dev *rr3)
558 struct usb_device *udev = rr3->udev;
559 struct device *dev = rr3->dev;
560 int rc, rxpipe, txpipe;
562 int len = sizeof(u8);
564 rr3_ftr(dev, "Entering %s\n", __func__);
566 rxpipe = usb_rcvctrlpipe(udev, 0);
567 txpipe = usb_sndctrlpipe(udev, 0);
569 val = kzalloc(len, GFP_KERNEL);
571 dev_err(dev, "Memory allocation failure\n");
576 rc = usb_control_msg(udev, rxpipe, RR3_RESET,
577 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
578 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
579 rr3_dbg(dev, "reset returned 0x%02x\n", rc);
582 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
583 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
584 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
585 rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
587 *val = RR3_DRIVER_MAXLENS;
588 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
589 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
590 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
591 rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
596 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
601 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
603 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL);
605 dev_err(rr3->dev, "Memory allocation failure\n");
609 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
611 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
612 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
615 dev_info(rr3->dev, "Firmware rev: %s", buffer);
617 dev_err(rr3->dev, "Problem fetching firmware ID\n");
620 rr3_ftr(rr3->dev, "Exiting %s\n", __func__);
623 static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len)
625 struct redrat3_header *header = rr3->bulk_in_buf;
626 unsigned pktlen, pkttype;
628 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
630 /* grab the Length and type of transfer */
631 pktlen = be16_to_cpu(header->length);
632 pkttype = be16_to_cpu(header->transfer_type);
634 if (pktlen > sizeof(rr3->irdata)) {
635 dev_warn(rr3->dev, "packet length %u too large\n", pktlen);
641 if (len >= sizeof(struct redrat3_error)) {
642 struct redrat3_error *error = rr3->bulk_in_buf;
643 unsigned fw_error = be16_to_cpu(error->fw_error);
644 redrat3_dump_fw_error(rr3, fw_error);
648 case RR3_MOD_SIGNAL_IN:
649 memcpy(&rr3->irdata, rr3->bulk_in_buf, len);
650 rr3->bytes_read = len;
651 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
652 rr3->bytes_read, pktlen);
656 rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n",
657 pkttype, len, pktlen);
662 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len)
664 void *irdata = &rr3->irdata;
666 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
668 if (len + rr3->bytes_read > sizeof(rr3->irdata)) {
669 dev_warn(rr3->dev, "too much data for packet\n");
674 memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len);
676 rr3->bytes_read += len;
677 rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read,
678 be16_to_cpu(rr3->irdata.header.length));
681 /* gather IR data from incoming urb, process it when we have enough */
682 static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len)
684 struct device *dev = rr3->dev;
688 rr3_ftr(dev, "Entering %s\n", __func__);
690 if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) {
691 redrat3_read_packet_start(rr3, len);
692 } else if (rr3->bytes_read != 0) {
693 redrat3_read_packet_continue(rr3, len);
694 } else if (rr3->bytes_read == 0) {
695 dev_err(dev, "error: no packet data read\n");
700 if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length))
701 /* we're still accumulating data */
704 /* if we get here, we've got IR data to decode */
705 pkttype = be16_to_cpu(rr3->irdata.header.transfer_type);
706 if (pkttype == RR3_MOD_SIGNAL_IN)
707 redrat3_process_ir_data(rr3);
709 rr3_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n",
717 /* callback function from USB when async USB request has completed */
718 static void redrat3_handle_async(struct urb *urb)
720 struct redrat3_dev *rr3;
728 pr_err("%s called with invalid context!\n", __func__);
733 rr3_ftr(rr3->dev, "Entering %s\n", __func__);
735 switch (urb->status) {
737 ret = redrat3_get_ir_data(rr3, urb->actual_length);
739 /* no error, prepare to read more */
740 redrat3_issue_async(rr3);
752 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
758 static void redrat3_write_bulk_callback(struct urb *urb)
760 struct redrat3_dev *rr3;
768 len = urb->actual_length;
769 rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n",
770 __func__, urb->status, len);
774 static u16 mod_freq_to_val(unsigned int mod_freq)
778 /* Clk used in mod. freq. generation is CLK24/4. */
779 return 65536 - (mult / mod_freq);
782 static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
784 struct redrat3_dev *rr3 = rcdev->priv;
785 struct device *dev = rr3->dev;
787 rr3_dbg(dev, "Setting modulation frequency to %u", carrier);
791 rr3->carrier = carrier;
796 static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
799 struct redrat3_dev *rr3 = rcdev->priv;
800 struct device *dev = rr3->dev;
801 struct redrat3_irdata *irdata = NULL;
803 int lencheck, cur_sample_len, pipe;
804 int *sample_lens = NULL;
808 rr3_ftr(dev, "Entering %s\n", __func__);
810 if (rr3->transmitting) {
811 dev_warn(dev, "%s: transmitter already in use\n", __func__);
815 count = min_t(unsigned, count, RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN);
817 /* rr3 will disable rc detector on transmit */
818 rr3->det_enabled = false;
819 rr3->transmitting = true;
821 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
827 irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
833 for (i = 0; i < count; i++) {
834 cur_sample_len = redrat3_us_to_len(txbuf[i]);
835 if (cur_sample_len > 0xffff) {
836 dev_warn(dev, "transmit period of %uus truncated to %uus\n",
837 txbuf[i], redrat3_len_to_us(0xffff));
838 cur_sample_len = 0xffff;
840 for (lencheck = 0; lencheck < curlencheck; lencheck++) {
841 if (sample_lens[lencheck] == cur_sample_len)
844 if (lencheck == curlencheck) {
845 rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
846 i, txbuf[i], curlencheck, cur_sample_len);
847 if (curlencheck < RR3_DRIVER_MAXLENS) {
848 /* now convert the value to a proper
850 sample_lens[curlencheck] = cur_sample_len;
851 put_unaligned_be16(cur_sample_len,
852 &irdata->lens[curlencheck]);
859 irdata->sigdata[i] = lencheck;
862 irdata->sigdata[count] = RR3_END_OF_SIGNAL;
863 irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;
865 sendbuf_len = offsetof(struct redrat3_irdata,
866 sigdata[count + RR3_TX_TRAILER_LEN]);
867 /* fill in our packet header */
868 irdata->header.length = cpu_to_be16(sendbuf_len -
869 sizeof(struct redrat3_header));
870 irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);
871 irdata->pause = cpu_to_be32(redrat3_len_to_us(100));
872 irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));
873 irdata->no_lengths = curlencheck;
874 irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);
876 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
877 ret = usb_bulk_msg(rr3->udev, pipe, irdata,
878 sendbuf_len, &ret_len, 10 * HZ);
879 rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
881 /* now tell the hardware to transmit what we sent it */
882 pipe = usb_rcvctrlpipe(rr3->udev, 0);
883 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
884 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
885 0, 0, irdata, 2, HZ * 10);
888 dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
896 rr3->transmitting = false;
897 /* rr3 re-enables rc detector because it was enabled before */
898 rr3->det_enabled = true;
903 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
905 struct device *dev = rr3->dev;
908 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
910 rc = rc_allocate_device();
912 dev_err(dev, "remote input dev allocation failed\n");
916 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s "
917 "Infrared Remote Transceiver (%04x:%04x)",
918 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "",
919 le16_to_cpu(rr3->udev->descriptor.idVendor), prod);
921 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
923 rc->input_name = rr3->name;
924 rc->input_phys = rr3->phys;
925 usb_to_input_id(rr3->udev, &rc->input_id);
926 rc->dev.parent = dev;
928 rc->driver_type = RC_DRIVER_IR_RAW;
929 rc->allowed_protos = RC_BIT_ALL;
930 rc->timeout = US_TO_NS(2750);
931 rc->tx_ir = redrat3_transmit_ir;
932 rc->s_tx_carrier = redrat3_set_tx_carrier;
933 rc->driver_name = DRIVER_NAME;
934 rc->rx_resolution = US_TO_NS(2);
935 rc->map_name = RC_MAP_HAUPPAUGE;
937 ret = rc_register_device(rc);
939 dev_err(dev, "remote dev registration failed\n");
950 static int redrat3_dev_probe(struct usb_interface *intf,
951 const struct usb_device_id *id)
953 struct usb_device *udev = interface_to_usbdev(intf);
954 struct device *dev = &intf->dev;
955 struct usb_host_interface *uhi;
956 struct redrat3_dev *rr3;
957 struct usb_endpoint_descriptor *ep;
958 struct usb_endpoint_descriptor *ep_in = NULL;
959 struct usb_endpoint_descriptor *ep_out = NULL;
962 int retval = -ENOMEM;
964 rr3_ftr(dev, "%s called\n", __func__);
966 uhi = intf->cur_altsetting;
968 /* find our bulk-in and bulk-out endpoints */
969 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
970 ep = &uhi->endpoint[i].desc;
971 addr = ep->bEndpointAddress;
972 attrs = ep->bmAttributes;
974 if ((ep_in == NULL) &&
975 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
976 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
977 USB_ENDPOINT_XFER_BULK)) {
978 rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
979 ep->bEndpointAddress);
980 /* data comes in on 0x82, 0x81 is for other data... */
981 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
985 if ((ep_out == NULL) &&
986 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
987 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
988 USB_ENDPOINT_XFER_BULK)) {
989 rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
990 ep->bEndpointAddress);
995 if (!ep_in || !ep_out) {
996 dev_err(dev, "Couldn't find both in and out endpoints\n");
1001 /* allocate memory for our device state and initialize it */
1002 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
1004 dev_err(dev, "Memory allocation failure\n");
1008 rr3->dev = &intf->dev;
1010 /* set up bulk-in endpoint */
1011 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
1012 if (!rr3->read_urb) {
1013 dev_err(dev, "Read urb allocation failure\n");
1018 rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize,
1019 GFP_ATOMIC, &rr3->dma_in);
1020 if (!rr3->bulk_in_buf) {
1021 dev_err(dev, "Read buffer allocation failure\n");
1025 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
1026 usb_fill_bulk_urb(rr3->read_urb, udev, pipe,
1027 rr3->bulk_in_buf, ep_in->wMaxPacketSize,
1028 redrat3_handle_async, rr3);
1030 /* set up bulk-out endpoint*/
1031 rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL);
1032 if (!rr3->write_urb) {
1033 dev_err(dev, "Write urb allocation failure\n");
1037 rr3->ep_out = ep_out;
1038 rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize,
1039 GFP_ATOMIC, &rr3->dma_out);
1040 if (!rr3->bulk_out_buf) {
1041 dev_err(dev, "Write buffer allocation failure\n");
1045 pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress);
1046 usb_fill_bulk_urb(rr3->write_urb, udev, pipe,
1047 rr3->bulk_out_buf, ep_out->wMaxPacketSize,
1048 redrat3_write_bulk_callback, rr3);
1053 redrat3_get_firmware_rev(rr3);
1055 /* might be all we need to do? */
1056 retval = redrat3_enable_detector(rr3);
1060 /* store current hardware timeout, in us, will use for kfifo resets */
1061 rr3->hw_timeout = redrat3_get_timeout(rr3);
1063 /* default.. will get overridden by any sends with a freq defined */
1064 rr3->carrier = 38000;
1066 rr3->rc = redrat3_init_rc_dev(rr3);
1071 setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);
1073 /* we can register the device now, as it is ready */
1074 usb_set_intfdata(intf, rr3);
1076 rr3_ftr(dev, "Exiting %s\n", __func__);
1080 redrat3_delete(rr3, rr3->udev);
1083 dev_err(dev, "%s: retval = %x", __func__, retval);
1088 static void redrat3_dev_disconnect(struct usb_interface *intf)
1090 struct usb_device *udev = interface_to_usbdev(intf);
1091 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1093 rr3_ftr(&intf->dev, "Entering %s\n", __func__);
1098 redrat3_disable_detector(rr3);
1100 usb_set_intfdata(intf, NULL);
1101 rc_unregister_device(rr3->rc);
1102 del_timer_sync(&rr3->rx_timeout);
1103 redrat3_delete(rr3, udev);
1105 rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n");
1108 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
1110 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1111 rr3_ftr(rr3->dev, "suspend\n");
1112 usb_kill_urb(rr3->read_urb);
1116 static int redrat3_dev_resume(struct usb_interface *intf)
1118 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1119 rr3_ftr(rr3->dev, "resume\n");
1120 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))
1125 static struct usb_driver redrat3_dev_driver = {
1126 .name = DRIVER_NAME,
1127 .probe = redrat3_dev_probe,
1128 .disconnect = redrat3_dev_disconnect,
1129 .suspend = redrat3_dev_suspend,
1130 .resume = redrat3_dev_resume,
1131 .reset_resume = redrat3_dev_resume,
1132 .id_table = redrat3_dev_table
1135 module_usb_driver(redrat3_dev_driver);
1137 MODULE_DESCRIPTION(DRIVER_DESC);
1138 MODULE_AUTHOR(DRIVER_AUTHOR);
1139 MODULE_AUTHOR(DRIVER_AUTHOR2);
1140 MODULE_LICENSE("GPL");
1141 MODULE_DEVICE_TABLE(usb, redrat3_dev_table);
1143 module_param(debug, int, S_IRUGO | S_IWUSR);
1144 MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) "
1145 "0x1 = standard debug messages, 0x2 = function tracing debug. "
1146 "Flag bits are addative (i.e., 0x3 for both debug types).");