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Diffstat (limited to 'drivers/media/IR/mceusb.c')
-rw-r--r--drivers/media/IR/mceusb.c1143
1 files changed, 1143 insertions, 0 deletions
diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c
new file mode 100644
index 000000000000..78bf7f77a1a0
--- /dev/null
+++ b/drivers/media/IR/mceusb.c
@@ -0,0 +1,1143 @@
1/*
2 * Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
3 *
4 * Copyright (c) 2010 by Jarod Wilson <jarod@redhat.com>
5 *
6 * Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan
7 * Conti, Martin Blatter and Daniel Melander, the latter of which was
8 * in turn also based on the lirc_atiusb driver by Paul Miller. The
9 * two mce drivers were merged into one by Jarod Wilson, with transmit
10 * support for the 1st-gen device added primarily by Patrick Calhoun,
11 * with a bit of tweaks by Jarod. Debugging improvements and proper
12 * support for what appears to be 3rd-gen hardware added by Jarod.
13 * Initial port from lirc driver to ir-core drivery by Jarod, based
14 * partially on a port to an earlier proposed IR infrastructure by
15 * Jon Smirl, which included enhancements and simplifications to the
16 * incoming IR buffer parsing routines.
17 *
18 *
19 * This program is free software; you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
23 *
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 *
33 */
34
35#include <linux/device.h>
36#include <linux/module.h>
37#include <linux/slab.h>
38#include <linux/usb.h>
39#include <linux/input.h>
40#include <media/ir-core.h>
41#include <media/ir-common.h>
42
43#define DRIVER_VERSION "1.91"
44#define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
45#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
46 "device driver"
47#define DRIVER_NAME "mceusb"
48
49#define USB_BUFLEN 32 /* USB reception buffer length */
50#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
51#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
52
53/* MCE constants */
54#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
55#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
56#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
57#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
58#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
59#define MCE_CONTROL_HEADER 0x9F /* MCE status header */
60#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
61#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
62#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */
63#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
64#define MCE_PULSE_MASK 0x7F /* Pulse mask */
65#define MCE_MAX_PULSE_LENGTH 0x7F /* Longest transmittable pulse symbol */
66#define MCE_PACKET_LENGTH_MASK 0x1F /* Packet length mask */
67
68
69/* module parameters */
70#ifdef CONFIG_USB_DEBUG
71static int debug = 1;
72#else
73static int debug;
74#endif
75
76/* general constants */
77#define SEND_FLAG_IN_PROGRESS 1
78#define SEND_FLAG_COMPLETE 2
79#define RECV_FLAG_IN_PROGRESS 3
80#define RECV_FLAG_COMPLETE 4
81
82#define MCEUSB_RX 1
83#define MCEUSB_TX 2
84
85#define VENDOR_PHILIPS 0x0471
86#define VENDOR_SMK 0x0609
87#define VENDOR_TATUNG 0x1460
88#define VENDOR_GATEWAY 0x107b
89#define VENDOR_SHUTTLE 0x1308
90#define VENDOR_SHUTTLE2 0x051c
91#define VENDOR_MITSUMI 0x03ee
92#define VENDOR_TOPSEED 0x1784
93#define VENDOR_RICAVISION 0x179d
94#define VENDOR_ITRON 0x195d
95#define VENDOR_FIC 0x1509
96#define VENDOR_LG 0x043e
97#define VENDOR_MICROSOFT 0x045e
98#define VENDOR_FORMOSA 0x147a
99#define VENDOR_FINTEK 0x1934
100#define VENDOR_PINNACLE 0x2304
101#define VENDOR_ECS 0x1019
102#define VENDOR_WISTRON 0x0fb8
103#define VENDOR_COMPRO 0x185b
104#define VENDOR_NORTHSTAR 0x04eb
105#define VENDOR_REALTEK 0x0bda
106#define VENDOR_TIVO 0x105a
107
108static struct usb_device_id mceusb_dev_table[] = {
109 /* Original Microsoft MCE IR Transceiver (often HP-branded) */
110 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
111 /* Philips Infrared Transceiver - Sahara branded */
112 { USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
113 /* Philips Infrared Transceiver - HP branded */
114 { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
115 /* Philips SRM5100 */
116 { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
117 /* Philips Infrared Transceiver - Omaura */
118 { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
119 /* Philips Infrared Transceiver - Spinel plus */
120 { USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
121 /* Philips eHome Infrared Transceiver */
122 { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
123 /* Realtek MCE IR Receiver */
124 { USB_DEVICE(VENDOR_REALTEK, 0x0161) },
125 /* SMK/Toshiba G83C0004D410 */
126 { USB_DEVICE(VENDOR_SMK, 0x031d) },
127 /* SMK eHome Infrared Transceiver (Sony VAIO) */
128 { USB_DEVICE(VENDOR_SMK, 0x0322) },
129 /* bundled with Hauppauge PVR-150 */
130 { USB_DEVICE(VENDOR_SMK, 0x0334) },
131 /* SMK eHome Infrared Transceiver */
132 { USB_DEVICE(VENDOR_SMK, 0x0338) },
133 /* Tatung eHome Infrared Transceiver */
134 { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
135 /* Shuttle eHome Infrared Transceiver */
136 { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
137 /* Shuttle eHome Infrared Transceiver */
138 { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
139 /* Gateway eHome Infrared Transceiver */
140 { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
141 /* Mitsumi */
142 { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
143 /* Topseed eHome Infrared Transceiver */
144 { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
145 /* Topseed HP eHome Infrared Transceiver */
146 { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
147 /* Topseed eHome Infrared Transceiver */
148 { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
149 /* Topseed eHome Infrared Transceiver */
150 { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
151 /* Topseed eHome Infrared Transceiver */
152 { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
153 /* Topseed eHome Infrared Transceiver */
154 { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
155 /* Ricavision internal Infrared Transceiver */
156 { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
157 /* Itron ione Libra Q-11 */
158 { USB_DEVICE(VENDOR_ITRON, 0x7002) },
159 /* FIC eHome Infrared Transceiver */
160 { USB_DEVICE(VENDOR_FIC, 0x9242) },
161 /* LG eHome Infrared Transceiver */
162 { USB_DEVICE(VENDOR_LG, 0x9803) },
163 /* Microsoft MCE Infrared Transceiver */
164 { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
165 /* Formosa eHome Infrared Transceiver */
166 { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
167 /* Formosa21 / eHome Infrared Receiver */
168 { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
169 /* Formosa aim / Trust MCE Infrared Receiver */
170 { USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
171 /* Formosa Industrial Computing / Beanbag Emulation Device */
172 { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
173 /* Formosa21 / eHome Infrared Receiver */
174 { USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
175 /* Formosa Industrial Computing AIM IR605/A */
176 { USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
177 /* Formosa Industrial Computing */
178 { USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
179 /* Fintek eHome Infrared Transceiver */
180 { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
181 /* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
182 { USB_DEVICE(VENDOR_FINTEK, 0x0702) },
183 /* Pinnacle Remote Kit */
184 { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
185 /* Elitegroup Computer Systems IR */
186 { USB_DEVICE(VENDOR_ECS, 0x0f38) },
187 /* Wistron Corp. eHome Infrared Receiver */
188 { USB_DEVICE(VENDOR_WISTRON, 0x0002) },
189 /* Compro K100 */
190 { USB_DEVICE(VENDOR_COMPRO, 0x3020) },
191 /* Compro K100 v2 */
192 { USB_DEVICE(VENDOR_COMPRO, 0x3082) },
193 /* Northstar Systems, Inc. eHome Infrared Transceiver */
194 { USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
195 /* TiVo PC IR Receiver */
196 { USB_DEVICE(VENDOR_TIVO, 0x2000) },
197 /* Terminating entry */
198 { }
199};
200
201static struct usb_device_id gen3_list[] = {
202 { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
203 { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
204 {}
205};
206
207static struct usb_device_id microsoft_gen1_list[] = {
208 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
209 {}
210};
211
212static struct usb_device_id std_tx_mask_list[] = {
213 { USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
214 { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
215 { USB_DEVICE(VENDOR_SMK, 0x031d) },
216 { USB_DEVICE(VENDOR_SMK, 0x0322) },
217 { USB_DEVICE(VENDOR_SMK, 0x0334) },
218 { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
219 { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
220 { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
221 { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
222 { USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
223 { USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
224 { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
225 {}
226};
227
228/* data structure for each usb transceiver */
229struct mceusb_dev {
230 /* ir-core bits */
231 struct ir_input_dev *irdev;
232 struct ir_dev_props *props;
233 struct ir_raw_event rawir;
234
235 /* core device bits */
236 struct device *dev;
237 struct input_dev *idev;
238
239 /* usb */
240 struct usb_device *usbdev;
241 struct urb *urb_in;
242 struct usb_endpoint_descriptor *usb_ep_in;
243 struct usb_endpoint_descriptor *usb_ep_out;
244
245 /* buffers and dma */
246 unsigned char *buf_in;
247 unsigned int len_in;
248 u8 cmd; /* MCE command type */
249 u8 rem; /* Remaining IR data bytes in packet */
250 dma_addr_t dma_in;
251 dma_addr_t dma_out;
252
253 struct {
254 u32 connected:1;
255 u32 tx_mask_inverted:1;
256 u32 microsoft_gen1:1;
257 u32 reserved:29;
258 } flags;
259
260 /* transmit support */
261 int send_flags;
262 u32 carrier;
263 unsigned char tx_mask;
264
265 char name[128];
266 char phys[64];
267};
268
269/*
270 * MCE Device Command Strings
271 * Device command responses vary from device to device...
272 * - DEVICE_RESET resets the hardware to its default state
273 * - GET_REVISION fetches the hardware/software revision, common
274 * replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
275 * - GET_CARRIER_FREQ gets the carrier mode and frequency of the
276 * device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
277 * meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
278 * ((clk / frequency) - 1)
279 * - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
280 * response in the form of 9f 0c msb lsb
281 * - GET_TX_BITMASK fetches the transmitter bitmask, replies in
282 * the form of 9f 08 bm, where bm is the bitmask
283 * - GET_RX_SENSOR fetches the RX sensor setting -- long-range
284 * general use one or short-range learning one, in the form of
285 * 9f 14 ss, where ss is either 01 for long-range or 02 for short
286 * - SET_CARRIER_FREQ sets a new carrier mode and frequency
287 * - SET_TX_BITMASK sets the transmitter bitmask
288 * - SET_RX_TIMEOUT sets the receiver timeout
289 * - SET_RX_SENSOR sets which receiver sensor to use
290 */
291static char DEVICE_RESET[] = {0x00, 0xff, 0xaa};
292static char GET_REVISION[] = {0xff, 0x0b};
293static char GET_UNKNOWN[] = {0xff, 0x18};
294static char GET_UNKNOWN2[] = {0x9f, 0x05};
295static char GET_CARRIER_FREQ[] = {0x9f, 0x07};
296static char GET_RX_TIMEOUT[] = {0x9f, 0x0d};
297static char GET_TX_BITMASK[] = {0x9f, 0x13};
298static char GET_RX_SENSOR[] = {0x9f, 0x15};
299/* sub in desired values in lower byte or bytes for full command */
300/* FIXME: make use of these for transmit.
301static char SET_CARRIER_FREQ[] = {0x9f, 0x06, 0x00, 0x00};
302static char SET_TX_BITMASK[] = {0x9f, 0x08, 0x00};
303static char SET_RX_TIMEOUT[] = {0x9f, 0x0c, 0x00, 0x00};
304static char SET_RX_SENSOR[] = {0x9f, 0x14, 0x00};
305*/
306
307static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
308 int len, bool out)
309{
310 char codes[USB_BUFLEN * 3 + 1];
311 char inout[9];
312 int i;
313 u8 cmd, subcmd, data1, data2;
314 struct device *dev = ir->dev;
315 int idx = 0;
316
317 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
318 if (ir->flags.microsoft_gen1 && !out)
319 idx = 2;
320
321 if (len <= idx)
322 return;
323
324 for (i = 0; i < len && i < USB_BUFLEN; i++)
325 snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF);
326
327 dev_info(dev, "%sx data: %s (length=%d)\n",
328 (out ? "t" : "r"), codes, len);
329
330 if (out)
331 strcpy(inout, "Request\0");
332 else
333 strcpy(inout, "Got\0");
334
335 cmd = buf[idx] & 0xff;
336 subcmd = buf[idx + 1] & 0xff;
337 data1 = buf[idx + 2] & 0xff;
338 data2 = buf[idx + 3] & 0xff;
339
340 switch (cmd) {
341 case 0x00:
342 if (subcmd == 0xff && data1 == 0xaa)
343 dev_info(dev, "Device reset requested\n");
344 else
345 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
346 cmd, subcmd);
347 break;
348 case 0xff:
349 switch (subcmd) {
350 case 0x0b:
351 if (len == 2)
352 dev_info(dev, "Get hw/sw rev?\n");
353 else
354 dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
355 "0x%02x 0x%02x\n", data1, data2,
356 buf[idx + 4], buf[idx + 5]);
357 break;
358 case 0xaa:
359 dev_info(dev, "Device reset requested\n");
360 break;
361 case 0xfe:
362 dev_info(dev, "Previous command not supported\n");
363 break;
364 case 0x18:
365 case 0x1b:
366 default:
367 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
368 cmd, subcmd);
369 break;
370 }
371 break;
372 case 0x9f:
373 switch (subcmd) {
374 case 0x03:
375 dev_info(dev, "Ping\n");
376 break;
377 case 0x04:
378 dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
379 data1, data2);
380 break;
381 case 0x06:
382 dev_info(dev, "%s carrier mode and freq of "
383 "0x%02x 0x%02x\n", inout, data1, data2);
384 break;
385 case 0x07:
386 dev_info(dev, "Get carrier mode and freq\n");
387 break;
388 case 0x08:
389 dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
390 inout, data1);
391 break;
392 case 0x0c:
393 /* value is in units of 50us, so x*50/100 or x/2 ms */
394 dev_info(dev, "%s receive timeout of %d ms\n",
395 inout, ((data1 << 8) | data2) / 2);
396 break;
397 case 0x0d:
398 dev_info(dev, "Get receive timeout\n");
399 break;
400 case 0x13:
401 dev_info(dev, "Get transmit blaster mask\n");
402 break;
403 case 0x14:
404 dev_info(dev, "%s %s-range receive sensor in use\n",
405 inout, data1 == 0x02 ? "short" : "long");
406 break;
407 case 0x15:
408 if (len == 2)
409 dev_info(dev, "Get receive sensor\n");
410 else
411 dev_info(dev, "Received pulse count is %d\n",
412 ((data1 << 8) | data2));
413 break;
414 case 0xfe:
415 dev_info(dev, "Error! Hardware is likely wedged...\n");
416 break;
417 case 0x05:
418 case 0x09:
419 case 0x0f:
420 default:
421 dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
422 cmd, subcmd);
423 break;
424 }
425 break;
426 default:
427 break;
428 }
429}
430
431static void usb_async_callback(struct urb *urb, struct pt_regs *regs)
432{
433 struct mceusb_dev *ir;
434 int len;
435
436 if (!urb)
437 return;
438
439 ir = urb->context;
440 if (ir) {
441 len = urb->actual_length;
442
443 dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
444 urb->status, len);
445
446 if (debug)
447 mceusb_dev_printdata(ir, urb->transfer_buffer,
448 len, true);
449 }
450
451}
452
453/* request incoming or send outgoing usb packet - used to initialize remote */
454static void mce_request_packet(struct mceusb_dev *ir,
455 struct usb_endpoint_descriptor *ep,
456 unsigned char *data, int size, int urb_type)
457{
458 int res;
459 struct urb *async_urb;
460 struct device *dev = ir->dev;
461 unsigned char *async_buf;
462
463 if (urb_type == MCEUSB_TX) {
464 async_urb = usb_alloc_urb(0, GFP_KERNEL);
465 if (unlikely(!async_urb)) {
466 dev_err(dev, "Error, couldn't allocate urb!\n");
467 return;
468 }
469
470 async_buf = kzalloc(size, GFP_KERNEL);
471 if (!async_buf) {
472 dev_err(dev, "Error, couldn't allocate buf!\n");
473 usb_free_urb(async_urb);
474 return;
475 }
476
477 /* outbound data */
478 usb_fill_int_urb(async_urb, ir->usbdev,
479 usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
480 async_buf, size, (usb_complete_t) usb_async_callback,
481 ir, ep->bInterval);
482 memcpy(async_buf, data, size);
483
484 } else if (urb_type == MCEUSB_RX) {
485 /* standard request */
486 async_urb = ir->urb_in;
487 ir->send_flags = RECV_FLAG_IN_PROGRESS;
488
489 } else {
490 dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
491 return;
492 }
493
494 dev_dbg(dev, "receive request called (size=%#x)\n", size);
495
496 async_urb->transfer_buffer_length = size;
497 async_urb->dev = ir->usbdev;
498
499 res = usb_submit_urb(async_urb, GFP_ATOMIC);
500 if (res) {
501 dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
502 return;
503 }
504 dev_dbg(dev, "receive request complete (res=%d)\n", res);
505}
506
507static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
508{
509 mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX);
510}
511
512static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
513{
514 mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX);
515}
516
517/* Send data out the IR blaster port(s) */
518static int mceusb_tx_ir(void *priv, int *txbuf, u32 n)
519{
520 struct mceusb_dev *ir = priv;
521 int i, ret = 0;
522 int count, cmdcount = 0;
523 unsigned char *cmdbuf; /* MCE command buffer */
524 long signal_duration = 0; /* Singnal length in us */
525 struct timeval start_time, end_time;
526
527 do_gettimeofday(&start_time);
528
529 count = n / sizeof(int);
530
531 cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL);
532 if (!cmdbuf)
533 return -ENOMEM;
534
535 /* MCE tx init header */
536 cmdbuf[cmdcount++] = MCE_CONTROL_HEADER;
537 cmdbuf[cmdcount++] = 0x08;
538 cmdbuf[cmdcount++] = ir->tx_mask;
539
540 /* Generate mce packet data */
541 for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
542 signal_duration += txbuf[i];
543 txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
544
545 do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
546
547 /* Insert mce packet header every 4th entry */
548 if ((cmdcount < MCE_CMDBUF_SIZE) &&
549 (cmdcount - MCE_TX_HEADER_LENGTH) %
550 MCE_CODE_LENGTH == 0)
551 cmdbuf[cmdcount++] = MCE_PACKET_HEADER;
552
553 /* Insert mce packet data */
554 if (cmdcount < MCE_CMDBUF_SIZE)
555 cmdbuf[cmdcount++] =
556 (txbuf[i] < MCE_PULSE_BIT ?
557 txbuf[i] : MCE_MAX_PULSE_LENGTH) |
558 (i & 1 ? 0x00 : MCE_PULSE_BIT);
559 else {
560 ret = -EINVAL;
561 goto out;
562 }
563
564 } while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) &&
565 (txbuf[i] -= MCE_MAX_PULSE_LENGTH));
566 }
567
568 /* Fix packet length in last header */
569 cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
570 0x80 + (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH - 1;
571
572 /* Check if we have room for the empty packet at the end */
573 if (cmdcount >= MCE_CMDBUF_SIZE) {
574 ret = -EINVAL;
575 goto out;
576 }
577
578 /* All mce commands end with an empty packet (0x80) */
579 cmdbuf[cmdcount++] = 0x80;
580
581 /* Transmit the command to the mce device */
582 mce_async_out(ir, cmdbuf, cmdcount);
583
584 /*
585 * The lircd gap calculation expects the write function to
586 * wait the time it takes for the ircommand to be sent before
587 * it returns.
588 */
589 do_gettimeofday(&end_time);
590 signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
591 (end_time.tv_sec - start_time.tv_sec) * 1000000;
592
593 /* delay with the closest number of ticks */
594 set_current_state(TASK_INTERRUPTIBLE);
595 schedule_timeout(usecs_to_jiffies(signal_duration));
596
597out:
598 kfree(cmdbuf);
599 return ret ? ret : n;
600}
601
602/* Sets active IR outputs -- mce devices typically (all?) have two */
603static int mceusb_set_tx_mask(void *priv, u32 mask)
604{
605 struct mceusb_dev *ir = priv;
606
607 if (ir->flags.tx_mask_inverted)
608 ir->tx_mask = (mask != 0x03 ? mask ^ 0x03 : mask) << 1;
609 else
610 ir->tx_mask = mask;
611
612 return 0;
613}
614
615/* Sets the send carrier frequency and mode */
616static int mceusb_set_tx_carrier(void *priv, u32 carrier)
617{
618 struct mceusb_dev *ir = priv;
619 int clk = 10000000;
620 int prescaler = 0, divisor = 0;
621 unsigned char cmdbuf[4] = { 0x9f, 0x06, 0x00, 0x00 };
622
623 /* Carrier has changed */
624 if (ir->carrier != carrier) {
625
626 if (carrier == 0) {
627 ir->carrier = carrier;
628 cmdbuf[2] = 0x01;
629 cmdbuf[3] = 0x80;
630 dev_dbg(ir->dev, "%s: disabling carrier "
631 "modulation\n", __func__);
632 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
633 return carrier;
634 }
635
636 for (prescaler = 0; prescaler < 4; ++prescaler) {
637 divisor = (clk >> (2 * prescaler)) / carrier;
638 if (divisor <= 0xFF) {
639 ir->carrier = carrier;
640 cmdbuf[2] = prescaler;
641 cmdbuf[3] = divisor;
642 dev_dbg(ir->dev, "%s: requesting %u HZ "
643 "carrier\n", __func__, carrier);
644
645 /* Transmit new carrier to mce device */
646 mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
647 return carrier;
648 }
649 }
650
651 return -EINVAL;
652
653 }
654
655 return carrier;
656}
657
658static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
659{
660 struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
661 int i, start_index = 0;
662 u8 hdr = MCE_CONTROL_HEADER;
663
664 /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
665 if (ir->flags.microsoft_gen1)
666 start_index = 2;
667
668 for (i = start_index; i < buf_len;) {
669 if (ir->rem == 0) {
670 /* decode mce packets of the form (84),AA,BB,CC,DD */
671 /* IR data packets can span USB messages - rem */
672 hdr = ir->buf_in[i];
673 ir->rem = (hdr & MCE_PACKET_LENGTH_MASK);
674 ir->cmd = (hdr & ~MCE_PACKET_LENGTH_MASK);
675 dev_dbg(ir->dev, "New data. rem: 0x%02x, cmd: 0x%02x\n",
676 ir->rem, ir->cmd);
677 i++;
678 }
679
680 /* don't process MCE commands */
681 if (hdr == MCE_CONTROL_HEADER || hdr == 0xff) {
682 ir->rem = 0;
683 return;
684 }
685
686 for (; (ir->rem > 0) && (i < buf_len); i++) {
687 ir->rem--;
688
689 rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
690 rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
691 * MCE_TIME_UNIT * 1000;
692
693 if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) {
694 if (ir->rawir.pulse == rawir.pulse)
695 ir->rawir.duration += rawir.duration;
696 else {
697 ir->rawir.duration = rawir.duration;
698 ir->rawir.pulse = rawir.pulse;
699 }
700 continue;
701 }
702 rawir.duration += ir->rawir.duration;
703 ir->rawir.duration = 0;
704 ir->rawir.pulse = rawir.pulse;
705
706 dev_dbg(ir->dev, "Storing %s with duration %d\n",
707 rawir.pulse ? "pulse" : "space",
708 rawir.duration);
709
710 ir_raw_event_store(ir->idev, &rawir);
711 }
712
713 if (ir->buf_in[i] == 0x80 || ir->buf_in[i] == 0x9f)
714 ir->rem = 0;
715
716 dev_dbg(ir->dev, "calling ir_raw_event_handle\n");
717 ir_raw_event_handle(ir->idev);
718 }
719}
720
721static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
722{
723 struct mceusb_dev *ir;
724 int buf_len;
725
726 if (!urb)
727 return;
728
729 ir = urb->context;
730 if (!ir) {
731 usb_unlink_urb(urb);
732 return;
733 }
734
735 buf_len = urb->actual_length;
736
737 if (debug)
738 mceusb_dev_printdata(ir, urb->transfer_buffer, buf_len, false);
739
740 if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
741 ir->send_flags = SEND_FLAG_COMPLETE;
742 dev_dbg(&ir->irdev->dev, "setup answer received %d bytes\n",
743 buf_len);
744 }
745
746 switch (urb->status) {
747 /* success */
748 case 0:
749 mceusb_process_ir_data(ir, buf_len);
750 break;
751
752 case -ECONNRESET:
753 case -ENOENT:
754 case -ESHUTDOWN:
755 usb_unlink_urb(urb);
756 return;
757
758 case -EPIPE:
759 default:
760 break;
761 }
762
763 usb_submit_urb(urb, GFP_ATOMIC);
764}
765
766static void mceusb_gen1_init(struct mceusb_dev *ir)
767{
768 int ret;
769 int maxp = ir->len_in;
770 struct device *dev = ir->dev;
771 char *data;
772
773 data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
774 if (!data) {
775 dev_err(dev, "%s: memory allocation failed!\n", __func__);
776 return;
777 }
778
779 /*
780 * This is a strange one. Windows issues a set address to the device
781 * on the receive control pipe and expect a certain value pair back
782 */
783 ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
784 USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
785 data, USB_CTRL_MSG_SZ, HZ * 3);
786 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
787 dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
788 __func__, data[0], data[1]);
789
790 /* set feature: bit rate 38400 bps */
791 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
792 USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
793 0xc04e, 0x0000, NULL, 0, HZ * 3);
794
795 dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
796
797 /* bRequest 4: set char length to 8 bits */
798 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
799 4, USB_TYPE_VENDOR,
800 0x0808, 0x0000, NULL, 0, HZ * 3);
801 dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
802
803 /* bRequest 2: set handshaking to use DTR/DSR */
804 ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
805 2, USB_TYPE_VENDOR,
806 0x0000, 0x0100, NULL, 0, HZ * 3);
807 dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
808
809 /* device reset */
810 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
811 mce_sync_in(ir, NULL, maxp);
812
813 /* get hw/sw revision? */
814 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
815 mce_sync_in(ir, NULL, maxp);
816
817 kfree(data);
818};
819
820static void mceusb_gen2_init(struct mceusb_dev *ir)
821{
822 int maxp = ir->len_in;
823
824 /* device reset */
825 mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
826 mce_sync_in(ir, NULL, maxp);
827
828 /* get hw/sw revision? */
829 mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
830 mce_sync_in(ir, NULL, maxp);
831
832 /* unknown what the next two actually return... */
833 mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
834 mce_sync_in(ir, NULL, maxp);
835 mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
836 mce_sync_in(ir, NULL, maxp);
837}
838
839static void mceusb_get_parameters(struct mceusb_dev *ir)
840{
841 int maxp = ir->len_in;
842
843 /* get the carrier and frequency */
844 mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
845 mce_sync_in(ir, NULL, maxp);
846
847 /* get the transmitter bitmask */
848 mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
849 mce_sync_in(ir, NULL, maxp);
850
851 /* get receiver timeout value */
852 mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
853 mce_sync_in(ir, NULL, maxp);
854
855 /* get receiver sensor setting */
856 mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
857 mce_sync_in(ir, NULL, maxp);
858}
859
860static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
861{
862 struct input_dev *idev;
863 struct ir_dev_props *props;
864 struct ir_input_dev *irdev;
865 struct device *dev = ir->dev;
866 int ret = -ENODEV;
867
868 idev = input_allocate_device();
869 if (!idev) {
870 dev_err(dev, "remote input dev allocation failed\n");
871 goto idev_alloc_failed;
872 }
873
874 ret = -ENOMEM;
875 props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
876 if (!props) {
877 dev_err(dev, "remote ir dev props allocation failed\n");
878 goto props_alloc_failed;
879 }
880
881 irdev = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL);
882 if (!irdev) {
883 dev_err(dev, "remote ir input dev allocation failed\n");
884 goto ir_dev_alloc_failed;
885 }
886
887 snprintf(ir->name, sizeof(ir->name), "Media Center Ed. eHome "
888 "Infrared Remote Transceiver (%04x:%04x)",
889 le16_to_cpu(ir->usbdev->descriptor.idVendor),
890 le16_to_cpu(ir->usbdev->descriptor.idProduct));
891
892 idev->name = ir->name;
893 usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
894 strlcat(ir->phys, "/input0", sizeof(ir->phys));
895 idev->phys = ir->phys;
896
897 props->priv = ir;
898 props->driver_type = RC_DRIVER_IR_RAW;
899 props->allowed_protos = IR_TYPE_ALL;
900 props->s_tx_mask = mceusb_set_tx_mask;
901 props->s_tx_carrier = mceusb_set_tx_carrier;
902 props->tx_ir = mceusb_tx_ir;
903
904 ir->props = props;
905 ir->irdev = irdev;
906
907 input_set_drvdata(idev, irdev);
908
909 ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME);
910 if (ret < 0) {
911 dev_err(dev, "remote input device register failed\n");
912 goto irdev_failed;
913 }
914
915 return idev;
916
917irdev_failed:
918 kfree(irdev);
919ir_dev_alloc_failed:
920 kfree(props);
921props_alloc_failed:
922 input_free_device(idev);
923idev_alloc_failed:
924 return NULL;
925}
926
927static int __devinit mceusb_dev_probe(struct usb_interface *intf,
928 const struct usb_device_id *id)
929{
930 struct usb_device *dev = interface_to_usbdev(intf);
931 struct usb_host_interface *idesc;
932 struct usb_endpoint_descriptor *ep = NULL;
933 struct usb_endpoint_descriptor *ep_in = NULL;
934 struct usb_endpoint_descriptor *ep_out = NULL;
935 struct usb_host_config *config;
936 struct mceusb_dev *ir = NULL;
937 int pipe, maxp, i;
938 char buf[63], name[128] = "";
939 bool is_gen3;
940 bool is_microsoft_gen1;
941 bool tx_mask_inverted;
942
943 dev_dbg(&intf->dev, ": %s called\n", __func__);
944
945 config = dev->actconfig;
946 idesc = intf->cur_altsetting;
947
948 is_gen3 = usb_match_id(intf, gen3_list) ? 1 : 0;
949 is_microsoft_gen1 = usb_match_id(intf, microsoft_gen1_list) ? 1 : 0;
950 tx_mask_inverted = usb_match_id(intf, std_tx_mask_list) ? 0 : 1;
951
952 /* step through the endpoints to find first bulk in and out endpoint */
953 for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
954 ep = &idesc->endpoint[i].desc;
955
956 if ((ep_in == NULL)
957 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
958 == USB_DIR_IN)
959 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
960 == USB_ENDPOINT_XFER_BULK)
961 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
962 == USB_ENDPOINT_XFER_INT))) {
963
964 ep_in = ep;
965 ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
966 ep_in->bInterval = 1;
967 dev_dbg(&intf->dev, ": acceptable inbound endpoint "
968 "found\n");
969 }
970
971 if ((ep_out == NULL)
972 && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
973 == USB_DIR_OUT)
974 && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
975 == USB_ENDPOINT_XFER_BULK)
976 || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
977 == USB_ENDPOINT_XFER_INT))) {
978
979 ep_out = ep;
980 ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
981 ep_out->bInterval = 1;
982 dev_dbg(&intf->dev, ": acceptable outbound endpoint "
983 "found\n");
984 }
985 }
986 if (ep_in == NULL) {
987 dev_dbg(&intf->dev, ": inbound and/or endpoint not found\n");
988 return -ENODEV;
989 }
990
991 pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
992 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
993
994 ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
995 if (!ir)
996 goto mem_alloc_fail;
997
998 ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
999 if (!ir->buf_in)
1000 goto buf_in_alloc_fail;
1001
1002 ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
1003 if (!ir->urb_in)
1004 goto urb_in_alloc_fail;
1005
1006 ir->usbdev = dev;
1007 ir->dev = &intf->dev;
1008 ir->len_in = maxp;
1009 ir->flags.microsoft_gen1 = is_microsoft_gen1;
1010 ir->flags.tx_mask_inverted = tx_mask_inverted;
1011
1012 /* Saving usb interface data for use by the transmitter routine */
1013 ir->usb_ep_in = ep_in;
1014 ir->usb_ep_out = ep_out;
1015
1016 if (dev->descriptor.iManufacturer
1017 && usb_string(dev, dev->descriptor.iManufacturer,
1018 buf, sizeof(buf)) > 0)
1019 strlcpy(name, buf, sizeof(name));
1020 if (dev->descriptor.iProduct
1021 && usb_string(dev, dev->descriptor.iProduct,
1022 buf, sizeof(buf)) > 0)
1023 snprintf(name + strlen(name), sizeof(name) - strlen(name),
1024 " %s", buf);
1025
1026 ir->idev = mceusb_init_input_dev(ir);
1027 if (!ir->idev)
1028 goto input_dev_fail;
1029
1030 /* flush buffers on the device */
1031 mce_sync_in(ir, NULL, maxp);
1032 mce_sync_in(ir, NULL, maxp);
1033
1034 /* wire up inbound data handler */
1035 usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
1036 maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
1037 ir->urb_in->transfer_dma = ir->dma_in;
1038 ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1039
1040 /* initialize device */
1041 if (ir->flags.microsoft_gen1)
1042 mceusb_gen1_init(ir);
1043 else if (!is_gen3)
1044 mceusb_gen2_init(ir);
1045
1046 mceusb_get_parameters(ir);
1047
1048 mceusb_set_tx_mask(ir, MCE_DEFAULT_TX_MASK);
1049
1050 usb_set_intfdata(intf, ir);
1051
1052 dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
1053 dev->bus->busnum, dev->devnum);
1054
1055 return 0;
1056
1057 /* Error-handling path */
1058input_dev_fail:
1059 usb_free_urb(ir->urb_in);
1060urb_in_alloc_fail:
1061 usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
1062buf_in_alloc_fail:
1063 kfree(ir);
1064mem_alloc_fail:
1065 dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
1066
1067 return -ENOMEM;
1068}
1069
1070
1071static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
1072{
1073 struct usb_device *dev = interface_to_usbdev(intf);
1074 struct mceusb_dev *ir = usb_get_intfdata(intf);
1075
1076 usb_set_intfdata(intf, NULL);
1077
1078 if (!ir)
1079 return;
1080
1081 ir->usbdev = NULL;
1082 ir_input_unregister(ir->idev);
1083 usb_kill_urb(ir->urb_in);
1084 usb_free_urb(ir->urb_in);
1085 usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
1086
1087 kfree(ir);
1088}
1089
1090static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
1091{
1092 struct mceusb_dev *ir = usb_get_intfdata(intf);
1093 dev_info(ir->dev, "suspend\n");
1094 usb_kill_urb(ir->urb_in);
1095 return 0;
1096}
1097
1098static int mceusb_dev_resume(struct usb_interface *intf)
1099{
1100 struct mceusb_dev *ir = usb_get_intfdata(intf);
1101 dev_info(ir->dev, "resume\n");
1102 if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
1103 return -EIO;
1104 return 0;
1105}
1106
1107static struct usb_driver mceusb_dev_driver = {
1108 .name = DRIVER_NAME,
1109 .probe = mceusb_dev_probe,
1110 .disconnect = mceusb_dev_disconnect,
1111 .suspend = mceusb_dev_suspend,
1112 .resume = mceusb_dev_resume,
1113 .reset_resume = mceusb_dev_resume,
1114 .id_table = mceusb_dev_table
1115};
1116
1117static int __init mceusb_dev_init(void)
1118{
1119 int ret;
1120
1121 ret = usb_register(&mceusb_dev_driver);
1122 if (ret < 0)
1123 printk(KERN_ERR DRIVER_NAME
1124 ": usb register failed, result = %d\n", ret);
1125
1126 return ret;
1127}
1128
1129static void __exit mceusb_dev_exit(void)
1130{
1131 usb_deregister(&mceusb_dev_driver);
1132}
1133
1134module_init(mceusb_dev_init);
1135module_exit(mceusb_dev_exit);
1136
1137MODULE_DESCRIPTION(DRIVER_DESC);
1138MODULE_AUTHOR(DRIVER_AUTHOR);
1139MODULE_LICENSE("GPL");
1140MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
1141
1142module_param(debug, bool, S_IRUGO | S_IWUSR);
1143MODULE_PARM_DESC(debug, "Debug enabled or not");
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-22 10:31:49 -0400