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
129 * The redrat3 encodes an IR signal as set of different lengths and a set
130 * of indices into those lengths. This sets how much two lengths must
131 * differ before they are considered distinct, the value is specified
133 * Default 5, value 0 to 127.
135 static int length_fuzz = 5;
136 module_param(length_fuzz, uint, 0644);
137 MODULE_PARM_DESC(length_fuzz, "Length Fuzz (0-127)");
140 * When receiving a continuous ir stream (for example when a user is
141 * holding a button down on a remote), this specifies the minimum size
142 * of a space when the redrat3 sends a irdata packet to the host. Specified
143 * in miliseconds. Default value 18ms.
144 * The value can be between 2 and 30 inclusive.
146 static int minimum_pause = 18;
147 module_param(minimum_pause, uint, 0644);
148 MODULE_PARM_DESC(minimum_pause, "Minimum Pause in ms (2-30)");
151 * The carrier frequency is measured during the first pulse of the IR
152 * signal. The larger the number of periods used To measure, the more
153 * accurate the result is likely to be, however some signals have short
154 * initial pulses, so in some case it may be necessary to reduce this value.
155 * Default 8, value 1 to 255.
157 static int periods_measure_carrier = 8;
158 module_param(periods_measure_carrier, uint, 0644);
159 MODULE_PARM_DESC(periods_measure_carrier, "Number of Periods to Measure Carrier (1-255)");
162 struct redrat3_header {
164 __be16 transfer_type;
167 /* sending and receiving irdata */
168 struct redrat3_irdata {
169 struct redrat3_header header;
171 __be16 mod_freq_count;
178 __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */
179 __u8 sigdata[RR3_MAX_SIG_SIZE];
182 /* firmware errors */
183 struct redrat3_error {
184 struct redrat3_header header;
188 /* table of devices that work with this driver */
189 static struct usb_device_id redrat3_dev_table[] = {
190 /* Original version of the RedRat3 */
191 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)},
192 /* Second Version/release of the RedRat3 - RetRat3-II */
193 {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)},
194 {} /* Terminating entry */
197 /* Structure to hold all of our device specific stuff */
199 /* core device bits */
204 struct led_classdev led;
206 struct usb_ctrlrequest flash_control;
207 struct urb *flash_urb;
210 /* save off the usb device pointer */
211 struct usb_device *udev;
213 /* the receive endpoint */
214 struct usb_endpoint_descriptor *ep_in;
215 /* the buffer to receive data */
217 /* urb used to read ir data */
218 struct urb *read_urb;
220 /* the send endpoint */
221 struct usb_endpoint_descriptor *ep_out;
226 /* Is the device currently transmitting?*/
229 /* store for current packet */
230 struct redrat3_irdata irdata;
240 * redrat3_issue_async
242 * Issues an async read to the ir data in port..
243 * sets the callback to be redrat3_handle_async
245 static void redrat3_issue_async(struct redrat3_dev *rr3)
249 res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC);
252 "%s: receive request FAILED! (res %d, len %d)\n",
253 __func__, res, rr3->read_urb->transfer_buffer_length);
256 static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)
258 if (!rr3->transmitting && (code != 0x40))
259 dev_info(rr3->dev, "fw error code 0x%02x: ", code);
263 pr_cont("No Error\n");
266 /* Codes 0x20 through 0x2f are IR Firmware Errors */
268 pr_cont("Initial signal pulse not long enough "
269 "to measure carrier frequency\n");
272 pr_cont("Not enough length values allocated for signal\n");
275 pr_cont("Not enough memory allocated for signal data\n");
278 pr_cont("Too many signal repeats\n");
281 pr_cont("Insufficient memory available for IR signal "
282 "data memory allocation\n");
285 pr_cont("Insufficient memory available "
286 "for IrDa signal data memory allocation\n");
289 /* Codes 0x30 through 0x3f are USB Firmware Errors */
291 pr_cont("Insufficient memory available for bulk "
292 "transfer structure\n");
296 * Other error codes... These are primarily errors that can occur in
297 * the control messages sent to the redrat
300 if (!rr3->transmitting)
301 pr_cont("Signal capture has been terminated\n");
304 pr_cont("Attempt to set/get and unknown signal I/O "
305 "algorithm parameter\n");
308 pr_cont("Signal capture already started\n");
312 pr_cont("Unknown Error\n");
317 static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata)
320 u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count);
322 if (mod_freq_count != 0)
323 mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) /
324 (mod_freq_count * RR3_CLK_PER_COUNT);
329 /* this function scales down the figures for the same result... */
330 static u32 redrat3_len_to_us(u32 length)
332 u32 biglen = length * 1000;
333 u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000;
334 u32 result = (u32) (biglen / divisor);
336 /* don't allow zero lengths to go back, breaks lirc */
337 return result ? result : 1;
341 * convert us back into redrat3 lengths
343 * length * 1000 length * 1000000
344 * ------------- = ---------------- = micro
345 * rr3clk / 1000 rr3clk
347 * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000
348 * ----- = 4 ----- = 6 -------------- = len ---------------------
351 static u32 redrat3_us_to_len(u32 microsec)
356 microsec = (microsec > IR_MAX_DURATION) ? IR_MAX_DURATION : microsec;
357 divisor = (RR3_CLK_CONV_FACTOR / 1000);
358 result = (u32)(microsec * divisor) / 1000;
360 /* don't allow zero lengths to go back, breaks lirc */
361 return result ? result : 1;
364 static void redrat3_process_ir_data(struct redrat3_dev *rr3)
366 DEFINE_IR_RAW_EVENT(rawir);
368 unsigned int i, sig_size, single_len, offset, val;
372 pr_err("%s called with no context!\n", __func__);
378 mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);
379 dev_dbg(dev, "Got mod_freq of %u\n", mod_freq);
381 /* process each rr3 encoded byte into an int */
382 sig_size = be16_to_cpu(rr3->irdata.sig_size);
383 for (i = 0; i < sig_size; i++) {
384 offset = rr3->irdata.sigdata[i];
385 val = get_unaligned_be16(&rr3->irdata.lens[offset]);
386 single_len = redrat3_len_to_us(val);
388 /* we should always get pulse/space/pulse/space samples */
394 rawir.duration = US_TO_NS(single_len);
395 /* cap the value to IR_MAX_DURATION */
396 rawir.duration = (rawir.duration > IR_MAX_DURATION) ?
397 IR_MAX_DURATION : rawir.duration;
399 dev_dbg(dev, "storing %s with duration %d (i: %d)\n",
400 rawir.pulse ? "pulse" : "space", rawir.duration, i);
401 ir_raw_event_store_with_filter(rr3->rc, &rawir);
404 /* add a trailing space */
406 rawir.timeout = true;
407 rawir.duration = rr3->rc->timeout;
408 dev_dbg(dev, "storing trailing timeout with duration %d\n",
410 ir_raw_event_store_with_filter(rr3->rc, &rawir);
412 dev_dbg(dev, "calling ir_raw_event_handle\n");
413 ir_raw_event_handle(rr3->rc);
416 /* Util fn to send rr3 cmds */
417 static int redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
419 struct usb_device *udev;
423 data = kzalloc(sizeof(u8), GFP_KERNEL);
428 res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
429 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
430 0x0000, 0x0000, data, sizeof(u8), HZ * 10);
433 dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
434 __func__, res, *data);
444 /* Enables the long range detector and starts async receive */
445 static int redrat3_enable_detector(struct redrat3_dev *rr3)
447 struct device *dev = rr3->dev;
450 ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
452 dev_dbg(dev, "%s: unexpected ret of %d\n",
455 ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
457 dev_err(dev, "%s: detector status: %d, should be 1\n",
462 redrat3_issue_async(rr3);
467 static inline void redrat3_delete(struct redrat3_dev *rr3,
468 struct usb_device *udev)
470 usb_kill_urb(rr3->read_urb);
471 usb_kill_urb(rr3->flash_urb);
472 usb_free_urb(rr3->read_urb);
473 usb_free_urb(rr3->flash_urb);
474 usb_free_coherent(udev, le16_to_cpu(rr3->ep_in->wMaxPacketSize),
475 rr3->bulk_in_buf, rr3->dma_in);
480 static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
483 u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */
487 tmp = kzalloc(len, GFP_KERNEL);
489 dev_warn(rr3->dev, "Memory allocation faillure\n");
493 pipe = usb_rcvctrlpipe(rr3->udev, 0);
494 ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
495 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
496 RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
498 dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
500 timeout = redrat3_len_to_us(be32_to_cpup(tmp));
502 dev_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000);
510 static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutns)
512 struct redrat3_dev *rr3 = rc_dev->priv;
513 struct usb_device *udev = rr3->udev;
514 struct device *dev = rr3->dev;
518 timeout = kmalloc(sizeof(*timeout), GFP_KERNEL);
522 *timeout = cpu_to_be32(redrat3_us_to_len(timeoutns / 1000));
523 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
524 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
525 RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout),
527 dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n",
528 be32_to_cpu(*timeout), ret);
530 if (ret == sizeof(*timeout))
540 static void redrat3_reset(struct redrat3_dev *rr3)
542 struct usb_device *udev = rr3->udev;
543 struct device *dev = rr3->dev;
544 int rc, rxpipe, txpipe;
546 int len = sizeof(u8);
548 rxpipe = usb_rcvctrlpipe(udev, 0);
549 txpipe = usb_sndctrlpipe(udev, 0);
551 val = kmalloc(len, GFP_KERNEL);
553 dev_err(dev, "Memory allocation failure\n");
558 rc = usb_control_msg(udev, rxpipe, RR3_RESET,
559 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
560 RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
561 dev_dbg(dev, "reset returned 0x%02x\n", rc);
564 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
565 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
566 RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
567 dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
569 *val = (65536 - (minimum_pause * 2000)) / 256;
570 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
571 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
572 RR3_IR_IO_MIN_PAUSE, 0, val, len, HZ * 25);
573 dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *val, rc);
575 *val = periods_measure_carrier;
576 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
577 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
578 RR3_IR_IO_PERIODS_MF, 0, val, len, HZ * 25);
579 dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x", *val,
582 *val = RR3_DRIVER_MAXLENS;
583 rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
584 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
585 RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
586 dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
591 static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
596 buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL);
598 dev_err(rr3->dev, "Memory allocation failure\n");
602 rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
604 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
605 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
608 dev_info(rr3->dev, "Firmware rev: %s", buffer);
610 dev_err(rr3->dev, "Problem fetching firmware ID\n");
615 static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len)
617 struct redrat3_header *header = rr3->bulk_in_buf;
618 unsigned pktlen, pkttype;
620 /* grab the Length and type of transfer */
621 pktlen = be16_to_cpu(header->length);
622 pkttype = be16_to_cpu(header->transfer_type);
624 if (pktlen > sizeof(rr3->irdata)) {
625 dev_warn(rr3->dev, "packet length %u too large\n", pktlen);
631 if (len >= sizeof(struct redrat3_error)) {
632 struct redrat3_error *error = rr3->bulk_in_buf;
633 unsigned fw_error = be16_to_cpu(error->fw_error);
634 redrat3_dump_fw_error(rr3, fw_error);
638 case RR3_MOD_SIGNAL_IN:
639 memcpy(&rr3->irdata, rr3->bulk_in_buf, len);
640 rr3->bytes_read = len;
641 dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n",
642 rr3->bytes_read, pktlen);
646 dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n",
647 pkttype, len, pktlen);
652 static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len)
654 void *irdata = &rr3->irdata;
656 if (len + rr3->bytes_read > sizeof(rr3->irdata)) {
657 dev_warn(rr3->dev, "too much data for packet\n");
662 memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len);
664 rr3->bytes_read += len;
665 dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read,
666 be16_to_cpu(rr3->irdata.header.length));
669 /* gather IR data from incoming urb, process it when we have enough */
670 static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len)
672 struct device *dev = rr3->dev;
676 if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) {
677 redrat3_read_packet_start(rr3, len);
678 } else if (rr3->bytes_read != 0) {
679 redrat3_read_packet_continue(rr3, len);
680 } else if (rr3->bytes_read == 0) {
681 dev_err(dev, "error: no packet data read\n");
686 if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) +
687 sizeof(struct redrat3_header))
688 /* we're still accumulating data */
691 /* if we get here, we've got IR data to decode */
692 pkttype = be16_to_cpu(rr3->irdata.header.transfer_type);
693 if (pkttype == RR3_MOD_SIGNAL_IN)
694 redrat3_process_ir_data(rr3);
696 dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n",
704 /* callback function from USB when async USB request has completed */
705 static void redrat3_handle_async(struct urb *urb)
707 struct redrat3_dev *rr3;
715 pr_err("%s called with invalid context!\n", __func__);
720 switch (urb->status) {
722 ret = redrat3_get_ir_data(rr3, urb->actual_length);
724 /* no error, prepare to read more */
725 redrat3_issue_async(rr3);
737 dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
743 static u16 mod_freq_to_val(unsigned int mod_freq)
747 /* Clk used in mod. freq. generation is CLK24/4. */
748 return 65536 - (mult / mod_freq);
751 static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier)
753 struct redrat3_dev *rr3 = rcdev->priv;
754 struct device *dev = rr3->dev;
756 dev_dbg(dev, "Setting modulation frequency to %u", carrier);
760 rr3->carrier = carrier;
765 static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
768 struct redrat3_dev *rr3 = rcdev->priv;
769 struct device *dev = rr3->dev;
770 struct redrat3_irdata *irdata = NULL;
772 int lencheck, cur_sample_len, pipe;
773 int *sample_lens = NULL;
775 unsigned i, sendbuf_len;
777 if (rr3->transmitting) {
778 dev_warn(dev, "%s: transmitter already in use\n", __func__);
782 if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN)
785 /* rr3 will disable rc detector on transmit */
786 rr3->transmitting = true;
788 sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
794 irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
800 for (i = 0; i < count; i++) {
801 cur_sample_len = redrat3_us_to_len(txbuf[i]);
802 if (cur_sample_len > 0xffff) {
803 dev_warn(dev, "transmit period of %uus truncated to %uus\n",
804 txbuf[i], redrat3_len_to_us(0xffff));
805 cur_sample_len = 0xffff;
807 for (lencheck = 0; lencheck < curlencheck; lencheck++) {
808 if (sample_lens[lencheck] == cur_sample_len)
811 if (lencheck == curlencheck) {
812 dev_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
813 i, txbuf[i], curlencheck, cur_sample_len);
814 if (curlencheck < RR3_DRIVER_MAXLENS) {
815 /* now convert the value to a proper
817 sample_lens[curlencheck] = cur_sample_len;
818 put_unaligned_be16(cur_sample_len,
819 &irdata->lens[curlencheck]);
826 irdata->sigdata[i] = lencheck;
829 irdata->sigdata[count] = RR3_END_OF_SIGNAL;
830 irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL;
832 sendbuf_len = offsetof(struct redrat3_irdata,
833 sigdata[count + RR3_TX_TRAILER_LEN]);
834 /* fill in our packet header */
835 irdata->header.length = cpu_to_be16(sendbuf_len -
836 sizeof(struct redrat3_header));
837 irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT);
838 irdata->pause = cpu_to_be32(redrat3_len_to_us(100));
839 irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier));
840 irdata->no_lengths = curlencheck;
841 irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN);
843 pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
844 ret = usb_bulk_msg(rr3->udev, pipe, irdata,
845 sendbuf_len, &ret_len, 10 * HZ);
846 dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
848 /* now tell the hardware to transmit what we sent it */
849 pipe = usb_rcvctrlpipe(rr3->udev, 0);
850 ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
851 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
852 0, 0, irdata, 2, HZ * 10);
855 dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
863 rr3->transmitting = false;
864 /* rr3 re-enables rc detector because it was enabled before */
869 static void redrat3_brightness_set(struct led_classdev *led_dev, enum
870 led_brightness brightness)
872 struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev,
875 if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) {
876 int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC);
878 dev_dbg(rr3->dev, "%s: unexpected ret of %d\n",
880 atomic_set(&rr3->flash, 0);
885 static void redrat3_led_complete(struct urb *urb)
887 struct redrat3_dev *rr3 = urb->context;
889 switch (urb->status) {
899 dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status);
903 rr3->led.brightness = LED_OFF;
904 atomic_dec(&rr3->flash);
907 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
909 struct device *dev = rr3->dev;
912 u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct);
914 rc = rc_allocate_device();
916 dev_err(dev, "remote input dev allocation failed\n");
920 snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s "
921 "Infrared Remote Transceiver (%04x:%04x)",
922 prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "",
923 le16_to_cpu(rr3->udev->descriptor.idVendor), prod);
925 usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys));
927 rc->input_name = rr3->name;
928 rc->input_phys = rr3->phys;
929 usb_to_input_id(rr3->udev, &rc->input_id);
930 rc->dev.parent = dev;
932 rc->driver_type = RC_DRIVER_IR_RAW;
933 rc->allowed_protocols = RC_BIT_ALL;
934 rc->min_timeout = MS_TO_NS(RR3_RX_MIN_TIMEOUT);
935 rc->max_timeout = MS_TO_NS(RR3_RX_MAX_TIMEOUT);
936 rc->timeout = US_TO_NS(redrat3_get_timeout(rr3));
937 rc->s_timeout = redrat3_set_timeout;
938 rc->tx_ir = redrat3_transmit_ir;
939 rc->s_tx_carrier = redrat3_set_tx_carrier;
940 rc->driver_name = DRIVER_NAME;
941 rc->rx_resolution = US_TO_NS(2);
942 rc->map_name = RC_MAP_HAUPPAUGE;
944 ret = rc_register_device(rc);
946 dev_err(dev, "remote dev registration failed\n");
957 static int redrat3_dev_probe(struct usb_interface *intf,
958 const struct usb_device_id *id)
960 struct usb_device *udev = interface_to_usbdev(intf);
961 struct device *dev = &intf->dev;
962 struct usb_host_interface *uhi;
963 struct redrat3_dev *rr3;
964 struct usb_endpoint_descriptor *ep;
965 struct usb_endpoint_descriptor *ep_in = NULL;
966 struct usb_endpoint_descriptor *ep_out = NULL;
969 int retval = -ENOMEM;
971 uhi = intf->cur_altsetting;
973 /* find our bulk-in and bulk-out endpoints */
974 for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
975 ep = &uhi->endpoint[i].desc;
976 addr = ep->bEndpointAddress;
977 attrs = ep->bmAttributes;
979 if ((ep_in == NULL) &&
980 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
981 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
982 USB_ENDPOINT_XFER_BULK)) {
983 dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
984 ep->bEndpointAddress);
985 /* data comes in on 0x82, 0x81 is for other data... */
986 if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
990 if ((ep_out == NULL) &&
991 ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
992 ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
993 USB_ENDPOINT_XFER_BULK)) {
994 dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
995 ep->bEndpointAddress);
1000 if (!ep_in || !ep_out) {
1001 dev_err(dev, "Couldn't find both in and out endpoints\n");
1006 /* allocate memory for our device state and initialize it */
1007 rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
1009 dev_err(dev, "Memory allocation failure\n");
1013 rr3->dev = &intf->dev;
1015 /* set up bulk-in endpoint */
1016 rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
1021 rr3->bulk_in_buf = usb_alloc_coherent(udev,
1022 le16_to_cpu(ep_in->wMaxPacketSize), GFP_KERNEL, &rr3->dma_in);
1023 if (!rr3->bulk_in_buf) {
1024 dev_err(dev, "Read buffer allocation failure\n");
1028 pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
1029 usb_fill_bulk_urb(rr3->read_urb, udev, pipe, rr3->bulk_in_buf,
1030 le16_to_cpu(ep_in->wMaxPacketSize), redrat3_handle_async, rr3);
1031 rr3->read_urb->transfer_dma = rr3->dma_in;
1032 rr3->read_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1034 rr3->ep_out = ep_out;
1038 redrat3_get_firmware_rev(rr3);
1040 /* might be all we need to do? */
1041 retval = redrat3_enable_detector(rr3);
1045 /* default.. will get overridden by any sends with a freq defined */
1046 rr3->carrier = 38000;
1049 rr3->led.name = "redrat3:red:feedback";
1050 rr3->led.default_trigger = "rc-feedback";
1051 rr3->led.brightness_set = redrat3_brightness_set;
1052 retval = led_classdev_register(&intf->dev, &rr3->led);
1056 atomic_set(&rr3->flash, 0);
1057 rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
1058 if (!rr3->flash_urb) {
1060 goto led_free_error;
1063 /* setup packet is 'c0 b9 0000 0000 0001' */
1064 rr3->flash_control.bRequestType = 0xc0;
1065 rr3->flash_control.bRequest = RR3_BLINK_LED;
1066 rr3->flash_control.wLength = cpu_to_le16(1);
1068 usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
1069 (unsigned char *)&rr3->flash_control,
1070 &rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
1071 redrat3_led_complete, rr3);
1073 rr3->rc = redrat3_init_rc_dev(rr3);
1076 goto led_free_error;
1079 /* we can register the device now, as it is ready */
1080 usb_set_intfdata(intf, rr3);
1085 led_classdev_unregister(&rr3->led);
1087 redrat3_delete(rr3, rr3->udev);
1090 dev_err(dev, "%s: retval = %x", __func__, retval);
1095 static void redrat3_dev_disconnect(struct usb_interface *intf)
1097 struct usb_device *udev = interface_to_usbdev(intf);
1098 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1103 usb_set_intfdata(intf, NULL);
1104 rc_unregister_device(rr3->rc);
1105 led_classdev_unregister(&rr3->led);
1106 redrat3_delete(rr3, udev);
1109 static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message)
1111 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1113 led_classdev_suspend(&rr3->led);
1114 usb_kill_urb(rr3->read_urb);
1115 usb_kill_urb(rr3->flash_urb);
1119 static int redrat3_dev_resume(struct usb_interface *intf)
1121 struct redrat3_dev *rr3 = usb_get_intfdata(intf);
1123 if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))
1125 led_classdev_resume(&rr3->led);
1129 static struct usb_driver redrat3_dev_driver = {
1130 .name = DRIVER_NAME,
1131 .probe = redrat3_dev_probe,
1132 .disconnect = redrat3_dev_disconnect,
1133 .suspend = redrat3_dev_suspend,
1134 .resume = redrat3_dev_resume,
1135 .reset_resume = redrat3_dev_resume,
1136 .id_table = redrat3_dev_table
1139 module_usb_driver(redrat3_dev_driver);
1141 MODULE_DESCRIPTION(DRIVER_DESC);
1142 MODULE_AUTHOR(DRIVER_AUTHOR);
1143 MODULE_AUTHOR(DRIVER_AUTHOR2);
1144 MODULE_LICENSE("GPL");
1145 MODULE_DEVICE_TABLE(usb, redrat3_dev_table);