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Linux 3.11-rc3
[cris-mirror.git] / drivers / media / usb / dvb-usb / dib0700_core.c
blobbf2a908d74cf3a804fe34eededac8157ab20aa0f
1 /* Linux driver for devices based on the DiBcom DiB0700 USB bridge
2 *
3 * This program is free software; you can redistribute it and/or modify it
4 * under the terms of the GNU General Public License as published by the Free
5 * Software Foundation, version 2.
6 *
7 * Copyright (C) 2005-6 DiBcom, SA
8 */
9 #include "dib0700.h"
10
11 /* debug */
12 int dvb_usb_dib0700_debug;
13 module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
14 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
15
16 static int nb_packet_buffer_size = 21;
17 module_param(nb_packet_buffer_size, int, 0644);
18 MODULE_PARM_DESC(nb_packet_buffer_size,
19 "Set the dib0700 driver data buffer size. This parameter "
20 "corresponds to the number of TS packets. The actual size of "
21 "the data buffer corresponds to this parameter "
22 "multiplied by 188 (default: 21)");
23
24 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
25
26
27 int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
28 u32 *romversion, u32 *ramversion, u32 *fwtype)
29 {
30 struct dib0700_state *st = d->priv;
31 int ret;
32
33 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
34 err("could not acquire lock");
35 return -EINTR;
36 }
37
38 ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
39 REQUEST_GET_VERSION,
40 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
41 st->buf, 16, USB_CTRL_GET_TIMEOUT);
42 if (hwversion != NULL)
43 *hwversion = (st->buf[0] << 24) | (st->buf[1] << 16) |
44 (st->buf[2] << 8) | st->buf[3];
45 if (romversion != NULL)
46 *romversion = (st->buf[4] << 24) | (st->buf[5] << 16) |
47 (st->buf[6] << 8) | st->buf[7];
48 if (ramversion != NULL)
49 *ramversion = (st->buf[8] << 24) | (st->buf[9] << 16) |
50 (st->buf[10] << 8) | st->buf[11];
51 if (fwtype != NULL)
52 *fwtype = (st->buf[12] << 24) | (st->buf[13] << 16) |
53 (st->buf[14] << 8) | st->buf[15];
54 mutex_unlock(&d->usb_mutex);
55 return ret;
56 }
57
58 /* expecting rx buffer: request data[0] data[1] ... data[2] */
59 static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
60 {
61 int status;
62
63 deb_data(">>> ");
64 debug_dump(tx, txlen, deb_data);
65
66 status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
67 tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen,
68 USB_CTRL_GET_TIMEOUT);
69
70 if (status != txlen)
71 deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen);
72
73 return status < 0 ? status : 0;
74 }
75
76 /* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
77 int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
78 {
79 u16 index, value;
80 int status;
81
82 if (txlen < 2) {
83 err("tx buffer length is smaller than 2. Makes no sense.");
84 return -EINVAL;
85 }
86 if (txlen > 4) {
87 err("tx buffer length is larger than 4. Not supported.");
88 return -EINVAL;
89 }
90
91 deb_data(">>> ");
92 debug_dump(tx,txlen,deb_data);
93
94 value = ((txlen - 2) << 8) | tx[1];
95 index = 0;
96 if (txlen > 2)
97 index |= (tx[2] << 8);
98 if (txlen > 3)
99 index |= tx[3];
100
101 status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
102 USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen,
103 USB_CTRL_GET_TIMEOUT);
104
105 if (status < 0)
106 deb_info("ep 0 read error (status = %d)\n",status);
107
108 deb_data("<<< ");
109 debug_dump(rx, rxlen, deb_data);
110
111 return status; /* length in case of success */
112 }
113
114 int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
115 {
116 struct dib0700_state *st = d->priv;
117 int ret;
118
119 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
120 err("could not acquire lock");
121 return -EINTR;
122 }
123
124 st->buf[0] = REQUEST_SET_GPIO;
125 st->buf[1] = gpio;
126 st->buf[2] = ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6);
127
128 ret = dib0700_ctrl_wr(d, st->buf, 3);
129
130 mutex_unlock(&d->usb_mutex);
131 return ret;
132 }
133
134 static int dib0700_set_usb_xfer_len(struct dvb_usb_device *d, u16 nb_ts_packets)
135 {
136 struct dib0700_state *st = d->priv;
137 int ret;
138
139 if (st->fw_version >= 0x10201) {
140 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
141 err("could not acquire lock");
142 return -EINTR;
143 }
144
145 st->buf[0] = REQUEST_SET_USB_XFER_LEN;
146 st->buf[1] = (nb_ts_packets >> 8) & 0xff;
147 st->buf[2] = nb_ts_packets & 0xff;
148
149 deb_info("set the USB xfer len to %i Ts packet\n", nb_ts_packets);
150
151 ret = dib0700_ctrl_wr(d, st->buf, 3);
152 mutex_unlock(&d->usb_mutex);
153 } else {
154 deb_info("this firmware does not allow to change the USB xfer len\n");
155 ret = -EIO;
156 }
157
158 return ret;
159 }
160
161 /*
162 * I2C master xfer function (supported in 1.20 firmware)
163 */
164 static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
165 int num)
166 {
167 /* The new i2c firmware messages are more reliable and in particular
168 properly support i2c read calls not preceded by a write */
169
170 struct dvb_usb_device *d = i2c_get_adapdata(adap);
171 struct dib0700_state *st = d->priv;
172 uint8_t bus_mode = 1; /* 0=eeprom bus, 1=frontend bus */
173 uint8_t gen_mode = 0; /* 0=master i2c, 1=gpio i2c */
174 uint8_t en_start = 0;
175 uint8_t en_stop = 0;
176 int result, i;
177
178 /* Ensure nobody else hits the i2c bus while we're sending our
179 sequence of messages, (such as the remote control thread) */
180 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
181 return -EINTR;
182
183 for (i = 0; i < num; i++) {
184 if (i == 0) {
185 /* First message in the transaction */
186 en_start = 1;
187 } else if (!(msg[i].flags & I2C_M_NOSTART)) {
188 /* Device supports repeated-start */
189 en_start = 1;
190 } else {
191 /* Not the first packet and device doesn't support
192 repeated start */
193 en_start = 0;
194 }
195 if (i == (num - 1)) {
196 /* Last message in the transaction */
197 en_stop = 1;
198 }
199
200 if (msg[i].flags & I2C_M_RD) {
201 /* Read request */
202 u16 index, value;
203 uint8_t i2c_dest;
204
205 i2c_dest = (msg[i].addr << 1);
206 value = ((en_start << 7) | (en_stop << 6) |
207 (msg[i].len & 0x3F)) << 8 | i2c_dest;
208 /* I2C ctrl + FE bus; */
209 index = ((gen_mode << 6) & 0xC0) |
210 ((bus_mode << 4) & 0x30);
211
212 result = usb_control_msg(d->udev,
213 usb_rcvctrlpipe(d->udev, 0),
214 REQUEST_NEW_I2C_READ,
215 USB_TYPE_VENDOR | USB_DIR_IN,
216 value, index, msg[i].buf,
217 msg[i].len,
218 USB_CTRL_GET_TIMEOUT);
219 if (result < 0) {
220 deb_info("i2c read error (status = %d)\n", result);
221 break;
222 }
223
224 deb_data("<<< ");
225 debug_dump(msg[i].buf, msg[i].len, deb_data);
226
227 } else {
228 /* Write request */
229 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
230 err("could not acquire lock");
231 mutex_unlock(&d->i2c_mutex);
232 return -EINTR;
233 }
234 st->buf[0] = REQUEST_NEW_I2C_WRITE;
235 st->buf[1] = msg[i].addr << 1;
236 st->buf[2] = (en_start << 7) | (en_stop << 6) |
237 (msg[i].len & 0x3F);
238 /* I2C ctrl + FE bus; */
239 st->buf[3] = ((gen_mode << 6) & 0xC0) |
240 ((bus_mode << 4) & 0x30);
241 /* The Actual i2c payload */
242 memcpy(&st->buf[4], msg[i].buf, msg[i].len);
243
244 deb_data(">>> ");
245 debug_dump(st->buf, msg[i].len + 4, deb_data);
246
247 result = usb_control_msg(d->udev,
248 usb_sndctrlpipe(d->udev, 0),
249 REQUEST_NEW_I2C_WRITE,
250 USB_TYPE_VENDOR | USB_DIR_OUT,
251 0, 0, st->buf, msg[i].len + 4,
252 USB_CTRL_GET_TIMEOUT);
253 mutex_unlock(&d->usb_mutex);
254 if (result < 0) {
255 deb_info("i2c write error (status = %d)\n", result);
256 break;
257 }
258 }
259 }
260 mutex_unlock(&d->i2c_mutex);
261 return i;
262 }
263
264 /*
265 * I2C master xfer function (pre-1.20 firmware)
266 */
267 static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
268 struct i2c_msg *msg, int num)
269 {
270 struct dvb_usb_device *d = i2c_get_adapdata(adap);
271 struct dib0700_state *st = d->priv;
272 int i,len;
273
274 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
275 return -EINTR;
276 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
277 err("could not acquire lock");
278 mutex_unlock(&d->i2c_mutex);
279 return -EINTR;
280 }
281
282 for (i = 0; i < num; i++) {
283 /* fill in the address */
284 st->buf[1] = msg[i].addr << 1;
285 /* fill the buffer */
286 memcpy(&st->buf[2], msg[i].buf, msg[i].len);
287
288 /* write/read request */
289 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
290 st->buf[0] = REQUEST_I2C_READ;
291 st->buf[1] |= 1;
292
293 /* special thing in the current firmware: when length is zero the read-failed */
294 len = dib0700_ctrl_rd(d, st->buf, msg[i].len + 2,
295 msg[i+1].buf, msg[i+1].len);
296 if (len <= 0) {
297 deb_info("I2C read failed on address 0x%02x\n",
298 msg[i].addr);
299 break;
300 }
301
302 msg[i+1].len = len;
303
304 i++;
305 } else {
306 st->buf[0] = REQUEST_I2C_WRITE;
307 if (dib0700_ctrl_wr(d, st->buf, msg[i].len + 2) < 0)
308 break;
309 }
310 }
311 mutex_unlock(&d->usb_mutex);
312 mutex_unlock(&d->i2c_mutex);
313
314 return i;
315 }
316
317 static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
318 int num)
319 {
320 struct dvb_usb_device *d = i2c_get_adapdata(adap);
321 struct dib0700_state *st = d->priv;
322
323 if (st->fw_use_new_i2c_api == 1) {
324 /* User running at least fw 1.20 */
325 return dib0700_i2c_xfer_new(adap, msg, num);
326 } else {
327 /* Use legacy calls */
328 return dib0700_i2c_xfer_legacy(adap, msg, num);
329 }
330 }
331
332 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
333 {
334 return I2C_FUNC_I2C;
335 }
336
337 struct i2c_algorithm dib0700_i2c_algo = {
338 .master_xfer = dib0700_i2c_xfer,
339 .functionality = dib0700_i2c_func,
340 };
341
342 int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
343 struct dvb_usb_device_description **desc, int *cold)
344 {
345 s16 ret;
346 u8 *b;
347
348 b = kmalloc(16, GFP_KERNEL);
349 if (!b)
350 return -ENOMEM;
351
352
353 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
354 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
355
356 deb_info("FW GET_VERSION length: %d\n",ret);
357
358 *cold = ret <= 0;
359 deb_info("cold: %d\n", *cold);
360
361 kfree(b);
362 return 0;
363 }
364
365 static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
366 u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
367 u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
368 {
369 struct dib0700_state *st = d->priv;
370 int ret;
371
372 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
373 err("could not acquire lock");
374 return -EINTR;
375 }
376
377 st->buf[0] = REQUEST_SET_CLOCK;
378 st->buf[1] = (en_pll << 7) | (pll_src << 6) |
379 (pll_range << 5) | (clock_gpio3 << 4);
380 st->buf[2] = (pll_prediv >> 8) & 0xff; /* MSB */
381 st->buf[3] = pll_prediv & 0xff; /* LSB */
382 st->buf[4] = (pll_loopdiv >> 8) & 0xff; /* MSB */
383 st->buf[5] = pll_loopdiv & 0xff; /* LSB */
384 st->buf[6] = (free_div >> 8) & 0xff; /* MSB */
385 st->buf[7] = free_div & 0xff; /* LSB */
386 st->buf[8] = (dsuScaler >> 8) & 0xff; /* MSB */
387 st->buf[9] = dsuScaler & 0xff; /* LSB */
388
389 ret = dib0700_ctrl_wr(d, st->buf, 10);
390 mutex_unlock(&d->usb_mutex);
391
392 return ret;
393 }
394
395 int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
396 {
397 struct dib0700_state *st = d->priv;
398 u16 divider;
399 int ret;
400
401 if (scl_kHz == 0)
402 return -EINVAL;
403
404 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
405 err("could not acquire lock");
406 return -EINTR;
407 }
408
409 st->buf[0] = REQUEST_SET_I2C_PARAM;
410 divider = (u16) (30000 / scl_kHz);
411 st->buf[1] = 0;
412 st->buf[2] = (u8) (divider >> 8);
413 st->buf[3] = (u8) (divider & 0xff);
414 divider = (u16) (72000 / scl_kHz);
415 st->buf[4] = (u8) (divider >> 8);
416 st->buf[5] = (u8) (divider & 0xff);
417 divider = (u16) (72000 / scl_kHz); /* clock: 72MHz */
418 st->buf[6] = (u8) (divider >> 8);
419 st->buf[7] = (u8) (divider & 0xff);
420
421 deb_info("setting I2C speed: %04x %04x %04x (%d kHz).",
422 (st->buf[2] << 8) | (st->buf[3]), (st->buf[4] << 8) |
423 st->buf[5], (st->buf[6] << 8) | st->buf[7], scl_kHz);
424
425 ret = dib0700_ctrl_wr(d, st->buf, 8);
426 mutex_unlock(&d->usb_mutex);
427
428 return ret;
429 }
430
431
432 int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
433 {
434 switch (clk_MHz) {
435 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
436 default: return -EINVAL;
437 }
438 return 0;
439 }
440
441 static int dib0700_jumpram(struct usb_device *udev, u32 address)
442 {
443 int ret = 0, actlen;
444 u8 *buf;
445
446 buf = kmalloc(8, GFP_KERNEL);
447 if (!buf)
448 return -ENOMEM;
449 buf[0] = REQUEST_JUMPRAM;
450 buf[1] = 0;
451 buf[2] = 0;
452 buf[3] = 0;
453 buf[4] = (address >> 24) & 0xff;
454 buf[5] = (address >> 16) & 0xff;
455 buf[6] = (address >> 8) & 0xff;
456 buf[7] = address & 0xff;
457
458 if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
459 deb_fw("jumpram to 0x%x failed\n",address);
460 goto out;
461 }
462 if (actlen != 8) {
463 deb_fw("jumpram to 0x%x failed\n",address);
464 ret = -EIO;
465 goto out;
466 }
467 out:
468 kfree(buf);
469 return ret;
470 }
471
472 int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
473 {
474 struct hexline hx;
475 int pos = 0, ret, act_len, i, adap_num;
476 u8 *buf;
477 u32 fw_version;
478
479 buf = kmalloc(260, GFP_KERNEL);
480 if (!buf)
481 return -ENOMEM;
482
483 while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
484 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",
485 hx.addr, hx.len, hx.chk);
486
487 buf[0] = hx.len;
488 buf[1] = (hx.addr >> 8) & 0xff;
489 buf[2] = hx.addr & 0xff;
490 buf[3] = hx.type;
491 memcpy(&buf[4],hx.data,hx.len);
492 buf[4+hx.len] = hx.chk;
493
494 ret = usb_bulk_msg(udev,
495 usb_sndbulkpipe(udev, 0x01),
496 buf,
497 hx.len + 5,
498 &act_len,
499 1000);
500
501 if (ret < 0) {
502 err("firmware download failed at %d with %d",pos,ret);
503 goto out;
504 }
505 }
506
507 if (ret == 0) {
508 /* start the firmware */
509 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
510 info("firmware started successfully.");
511 msleep(500);
512 }
513 } else
514 ret = -EIO;
515
516 /* the number of ts packet has to be at least 1 */
517 if (nb_packet_buffer_size < 1)
518 nb_packet_buffer_size = 1;
519
520 /* get the fimware version */
521 usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
522 REQUEST_GET_VERSION,
523 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
524 buf, 16, USB_CTRL_GET_TIMEOUT);
525 fw_version = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11];
526
527 /* set the buffer size - DVB-USB is allocating URB buffers
528 * only after the firwmare download was successful */
529 for (i = 0; i < dib0700_device_count; i++) {
530 for (adap_num = 0; adap_num < dib0700_devices[i].num_adapters;
531 adap_num++) {
532 if (fw_version >= 0x10201) {
533 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 188*nb_packet_buffer_size;
534 } else {
535 /* for fw version older than 1.20.1,
536 * the buffersize has to be n times 512 */
537 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = ((188*nb_packet_buffer_size+188/2)/512)*512;
538 if (dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize < 512)
539 dib0700_devices[i].adapter[adap_num].fe[0].stream.u.bulk.buffersize = 512;
540 }
541 }
542 }
543 out:
544 kfree(buf);
545 return ret;
546 }
547
548 int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
549 {
550 struct dib0700_state *st = adap->dev->priv;
551 int ret;
552
553 if ((onoff != 0) && (st->fw_version >= 0x10201)) {
554 /* for firmware later than 1.20.1,
555 * the USB xfer length can be set */
556 ret = dib0700_set_usb_xfer_len(adap->dev,
557 st->nb_packet_buffer_size);
558 if (ret < 0) {
559 deb_info("can not set the USB xfer len\n");
560 return ret;
561 }
562 }
563
564 mutex_lock(&adap->dev->usb_mutex);
565
566 st->buf[0] = REQUEST_ENABLE_VIDEO;
567 /* this bit gives a kind of command,
568 * rather than enabling something or not */
569 st->buf[1] = (onoff << 4) | 0x00;
570
571 if (st->disable_streaming_master_mode == 1)
572 st->buf[2] = 0x00;
573 else
574 st->buf[2] = 0x01 << 4; /* Master mode */
575
576 st->buf[3] = 0x00;
577
578 deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
579
580 st->channel_state &= ~0x3;
581 if ((adap->fe_adap[0].stream.props.endpoint != 2)
582 && (adap->fe_adap[0].stream.props.endpoint != 3)) {
583 deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint);
584 if (onoff)
585 st->channel_state |= 1 << (adap->id);
586 else
587 st->channel_state |= 1 << ~(adap->id);
588 } else {
589 if (onoff)
590 st->channel_state |= 1 << (adap->fe_adap[0].stream.props.endpoint-2);
591 else
592 st->channel_state |= 1 << (3-adap->fe_adap[0].stream.props.endpoint);
593 }
594
595 st->buf[2] |= st->channel_state;
596
597 deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]);
598
599 ret = dib0700_ctrl_wr(adap->dev, st->buf, 4);
600 mutex_unlock(&adap->dev->usb_mutex);
601
602 return ret;
603 }
604
605 int dib0700_change_protocol(struct rc_dev *rc, u64 *rc_type)
606 {
607 struct dvb_usb_device *d = rc->priv;
608 struct dib0700_state *st = d->priv;
609 int new_proto, ret;
610
611 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
612 err("could not acquire lock");
613 return -EINTR;
614 }
615
616 st->buf[0] = REQUEST_SET_RC;
617 st->buf[1] = 0;
618 st->buf[2] = 0;
619
620 /* Set the IR mode */
621 if (*rc_type & RC_BIT_RC5) {
622 new_proto = 1;
623 *rc_type = RC_BIT_RC5;
624 } else if (*rc_type & RC_BIT_NEC) {
625 new_proto = 0;
626 *rc_type = RC_BIT_NEC;
627 } else if (*rc_type & RC_BIT_RC6_MCE) {
628 if (st->fw_version < 0x10200) {
629 ret = -EINVAL;
630 goto out;
631 }
632 new_proto = 2;
633 *rc_type = RC_BIT_RC6_MCE;
634 } else {
635 ret = -EINVAL;
636 goto out;
637 }
638
639 st->buf[1] = new_proto;
640
641 ret = dib0700_ctrl_wr(d, st->buf, 3);
642 if (ret < 0) {
643 err("ir protocol setup failed");
644 goto out;
645 }
646
647 d->props.rc.core.protocol = *rc_type;
648
649 out:
650 mutex_unlock(&d->usb_mutex);
651 return ret;
652 }
653
654 /* Number of keypresses to ignore before start repeating */
655 #define RC_REPEAT_DELAY_V1_20 10
656
657 /* This is the structure of the RC response packet starting in firmware 1.20 */
658 struct dib0700_rc_response {
659 u8 report_id;
660 u8 data_state;
661 union {
662 u16 system16;
663 struct {
664 u8 not_system;
665 u8 system;
666 };
667 };
668 u8 data;
669 u8 not_data;
670 };
671 #define RC_MSG_SIZE_V1_20 6
672
673 static void dib0700_rc_urb_completion(struct urb *purb)
674 {
675 struct dvb_usb_device *d = purb->context;
676 struct dib0700_rc_response *poll_reply;
677 u32 uninitialized_var(keycode);
678 u8 toggle;
679
680 deb_info("%s()\n", __func__);
681 if (d->rc_dev == NULL) {
682 /* This will occur if disable_rc_polling=1 */
683 kfree(purb->transfer_buffer);
684 usb_free_urb(purb);
685 return;
686 }
687
688 poll_reply = purb->transfer_buffer;
689
690 if (purb->status < 0) {
691 deb_info("discontinuing polling\n");
692 kfree(purb->transfer_buffer);
693 usb_free_urb(purb);
694 return;
695 }
696
697 if (purb->actual_length != RC_MSG_SIZE_V1_20) {
698 deb_info("malformed rc msg size=%d\n", purb->actual_length);
699 goto resubmit;
700 }
701
702 deb_data("IR ID = %02X state = %02X System = %02X %02X Cmd = %02X %02X (len %d)\n",
703 poll_reply->report_id, poll_reply->data_state,
704 poll_reply->system, poll_reply->not_system,
705 poll_reply->data, poll_reply->not_data,
706 purb->actual_length);
707
708 switch (d->props.rc.core.protocol) {
709 case RC_BIT_NEC:
710 toggle = 0;
711
712 /* NEC protocol sends repeat code as 0 0 0 FF */
713 if ((poll_reply->system == 0x00) && (poll_reply->data == 0x00)
714 && (poll_reply->not_data == 0xff)) {
715 poll_reply->data_state = 2;
716 break;
717 }
718
719 if ((poll_reply->system ^ poll_reply->not_system) != 0xff) {
720 deb_data("NEC extended protocol\n");
721 /* NEC extended code - 24 bits */
722 keycode = be16_to_cpu(poll_reply->system16) << 8 | poll_reply->data;
723 } else {
724 deb_data("NEC normal protocol\n");
725 /* normal NEC code - 16 bits */
726 keycode = poll_reply->system << 8 | poll_reply->data;
727 }
728
729 break;
730 default:
731 deb_data("RC5 protocol\n");
732 /* RC5 Protocol */
733 toggle = poll_reply->report_id;
734 keycode = poll_reply->system << 8 | poll_reply->data;
735
736 break;
737 }
738
739 if ((poll_reply->data + poll_reply->not_data) != 0xff) {
740 /* Key failed integrity check */
741 err("key failed integrity check: %04x %02x %02x",
742 poll_reply->system,
743 poll_reply->data, poll_reply->not_data);
744 goto resubmit;
745 }
746
747 rc_keydown(d->rc_dev, keycode, toggle);
748
749 resubmit:
750 /* Clean the buffer before we requeue */
751 memset(purb->transfer_buffer, 0, RC_MSG_SIZE_V1_20);
752
753 /* Requeue URB */
754 usb_submit_urb(purb, GFP_ATOMIC);
755 }
756
757 int dib0700_rc_setup(struct dvb_usb_device *d)
758 {
759 struct dib0700_state *st = d->priv;
760 struct urb *purb;
761 int ret;
762
763 /* Poll-based. Don't initialize bulk mode */
764 if (st->fw_version < 0x10200)
765 return 0;
766
767 /* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
768 purb = usb_alloc_urb(0, GFP_KERNEL);
769 if (purb == NULL) {
770 err("rc usb alloc urb failed");
771 return -ENOMEM;
772 }
773
774 purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
775 if (purb->transfer_buffer == NULL) {
776 err("rc kzalloc failed");
777 usb_free_urb(purb);
778 return -ENOMEM;
779 }
780
781 purb->status = -EINPROGRESS;
782 usb_fill_bulk_urb(purb, d->udev, usb_rcvbulkpipe(d->udev, 1),
783 purb->transfer_buffer, RC_MSG_SIZE_V1_20,
784 dib0700_rc_urb_completion, d);
785
786 ret = usb_submit_urb(purb, GFP_ATOMIC);
787 if (ret) {
788 err("rc submit urb failed");
789 kfree(purb->transfer_buffer);
790 usb_free_urb(purb);
791 }
792
793 return ret;
794 }
795
796 static int dib0700_probe(struct usb_interface *intf,
797 const struct usb_device_id *id)
798 {
799 int i;
800 struct dvb_usb_device *dev;
801
802 for (i = 0; i < dib0700_device_count; i++)
803 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
804 &dev, adapter_nr) == 0) {
805 struct dib0700_state *st = dev->priv;
806 u32 hwversion, romversion, fw_version, fwtype;
807
808 dib0700_get_version(dev, &hwversion, &romversion,
809 &fw_version, &fwtype);
810
811 deb_info("Firmware version: %x, %d, 0x%x, %d\n",
812 hwversion, romversion, fw_version, fwtype);
813
814 st->fw_version = fw_version;
815 st->nb_packet_buffer_size = (u32)nb_packet_buffer_size;
816
817 /* Disable polling mode on newer firmwares */
818 if (st->fw_version >= 0x10200)
819 dev->props.rc.core.bulk_mode = true;
820 else
821 dev->props.rc.core.bulk_mode = false;
822
823 dib0700_rc_setup(dev);
824
825 return 0;
826 }
827
828 return -ENODEV;
829 }
830
831 static struct usb_driver dib0700_driver = {
832 .name = "dvb_usb_dib0700",
833 .probe = dib0700_probe,
834 .disconnect = dvb_usb_device_exit,
835 .id_table = dib0700_usb_id_table,
836 };
837
838 module_usb_driver(dib0700_driver);
839
840 MODULE_FIRMWARE("dvb-usb-dib0700-1.20.fw");
841 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
842 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
843 MODULE_VERSION("1.0");
844 MODULE_LICENSE("GPL");
CRIS linux kernel tree