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path: root/drivers/media/dvb/dvb-usb/dib0700_core.c
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Diffstat (limited to 'drivers/media/dvb/dvb-usb/dib0700_core.c')
-rw-r--r--drivers/media/dvb/dvb-usb/dib0700_core.c860
1 files changed, 860 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c
new file mode 100644
index 00000000000..a224e94325b
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dib0700_core.c
@@ -0,0 +1,860 @@
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 */
12int dvb_usb_dib0700_debug;
13module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
14MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
15
16static int nb_packet_buffer_size = 21;
17module_param(nb_packet_buffer_size, int, 0644);
18MODULE_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
24DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
25
26
27int 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 deb_info("could not acquire lock");
35 return 0;
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] */
59static 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) */
77int 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
114int 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 deb_info("could not acquire lock");
121 return 0;
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
134static 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 deb_info("could not acquire lock");
142 return 0;
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 */
164static 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 -EAGAIN;
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 deb_info("could not acquire lock");
231 return 0;
232 }
233 st->buf[0] = REQUEST_NEW_I2C_WRITE;
234 st->buf[1] = msg[i].addr << 1;
235 st->buf[2] = (en_start << 7) | (en_stop << 6) |
236 (msg[i].len & 0x3F);
237 /* I2C ctrl + FE bus; */
238 st->buf[3] = ((gen_mode << 6) & 0xC0) |
239 ((bus_mode << 4) & 0x30);
240 /* The Actual i2c payload */
241 memcpy(&st->buf[4], msg[i].buf, msg[i].len);
242
243 deb_data(">>> ");
244 debug_dump(st->buf, msg[i].len + 4, deb_data);
245
246 result = usb_control_msg(d->udev,
247 usb_sndctrlpipe(d->udev, 0),
248 REQUEST_NEW_I2C_WRITE,
249 USB_TYPE_VENDOR | USB_DIR_OUT,
250 0, 0, st->buf, msg[i].len + 4,
251 USB_CTRL_GET_TIMEOUT);
252 mutex_unlock(&d->usb_mutex);
253 if (result < 0) {
254 deb_info("i2c write error (status = %d)\n", result);
255 break;
256 }
257 }
258 }
259 mutex_unlock(&d->i2c_mutex);
260 return i;
261}
262
263/*
264 * I2C master xfer function (pre-1.20 firmware)
265 */
266static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
267 struct i2c_msg *msg, int num)
268{
269 struct dvb_usb_device *d = i2c_get_adapdata(adap);
270 struct dib0700_state *st = d->priv;
271 int i,len;
272
273 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
274 return -EAGAIN;
275 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
276 deb_info("could not acquire lock");
277 return 0;
278 }
279
280 for (i = 0; i < num; i++) {
281 /* fill in the address */
282 st->buf[1] = msg[i].addr << 1;
283 /* fill the buffer */
284 memcpy(&st->buf[2], msg[i].buf, msg[i].len);
285
286 /* write/read request */
287 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
288 st->buf[0] = REQUEST_I2C_READ;
289 st->buf[1] |= 1;
290
291 /* special thing in the current firmware: when length is zero the read-failed */
292 len = dib0700_ctrl_rd(d, st->buf, msg[i].len + 2,
293 msg[i+1].buf, msg[i+1].len);
294 if (len <= 0) {
295 deb_info("I2C read failed on address 0x%02x\n",
296 msg[i].addr);
297 break;
298 }
299
300 msg[i+1].len = len;
301
302 i++;
303 } else {
304 st->buf[0] = REQUEST_I2C_WRITE;
305 if (dib0700_ctrl_wr(d, st->buf, msg[i].len + 2) < 0)
306 break;
307 }
308 }
309 mutex_unlock(&d->usb_mutex);
310 mutex_unlock(&d->i2c_mutex);
311
312 return i;
313}
314
315static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
316 int num)
317{
318 struct dvb_usb_device *d = i2c_get_adapdata(adap);
319 struct dib0700_state *st = d->priv;
320
321 if (st->fw_use_new_i2c_api == 1) {
322 /* User running at least fw 1.20 */
323 return dib0700_i2c_xfer_new(adap, msg, num);
324 } else {
325 /* Use legacy calls */
326 return dib0700_i2c_xfer_legacy(adap, msg, num);
327 }
328}
329
330static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
331{
332 return I2C_FUNC_I2C;
333}
334
335struct i2c_algorithm dib0700_i2c_algo = {
336 .master_xfer = dib0700_i2c_xfer,
337 .functionality = dib0700_i2c_func,
338};
339
340int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
341 struct dvb_usb_device_description **desc, int *cold)
342{
343 s16 ret;
344 u8 *b;
345
346 b = kmalloc(16, GFP_KERNEL);
347 if (!b)
348 return -ENOMEM;
349
350
351 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
352 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
353
354 deb_info("FW GET_VERSION length: %d\n",ret);
355
356 *cold = ret <= 0;
357 deb_info("cold: %d\n", *cold);
358
359 kfree(b);
360 return 0;
361}
362
363static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
364 u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
365 u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
366{
367 struct dib0700_state *st = d->priv;
368 int ret;
369
370 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
371 deb_info("could not acquire lock");
372 return 0;
373 }
374
375 st->buf[0] = REQUEST_SET_CLOCK;
376 st->buf[1] = (en_pll << 7) | (pll_src << 6) |
377 (pll_range << 5) | (clock_gpio3 << 4);
378 st->buf[2] = (pll_prediv >> 8) & 0xff; /* MSB */
379 st->buf[3] = pll_prediv & 0xff; /* LSB */
380 st->buf[4] = (pll_loopdiv >> 8) & 0xff; /* MSB */
381 st->buf[5] = pll_loopdiv & 0xff; /* LSB */
382 st->buf[6] = (free_div >> 8) & 0xff; /* MSB */
383 st->buf[7] = free_div & 0xff; /* LSB */
384 st->buf[8] = (dsuScaler >> 8) & 0xff; /* MSB */
385 st->buf[9] = dsuScaler & 0xff; /* LSB */
386
387 ret = dib0700_ctrl_wr(d, st->buf, 10);
388 mutex_unlock(&d->usb_mutex);
389
390 return ret;
391}
392
393int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
394{
395 struct dib0700_state *st = d->priv;
396 u16 divider;
397 int ret;
398
399 if (scl_kHz == 0)
400 return -EINVAL;
401
402 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
403 deb_info("could not acquire lock");
404 return 0;
405 }
406
407 st->buf[0] = REQUEST_SET_I2C_PARAM;
408 divider = (u16) (30000 / scl_kHz);
409 st->buf[1] = 0;
410 st->buf[2] = (u8) (divider >> 8);
411 st->buf[3] = (u8) (divider & 0xff);
412 divider = (u16) (72000 / scl_kHz);
413 st->buf[4] = (u8) (divider >> 8);
414 st->buf[5] = (u8) (divider & 0xff);
415 divider = (u16) (72000 / scl_kHz); /* clock: 72MHz */
416 st->buf[6] = (u8) (divider >> 8);
417 st->buf[7] = (u8) (divider & 0xff);
418
419 deb_info("setting I2C speed: %04x %04x %04x (%d kHz).",
420 (st->buf[2] << 8) | (st->buf[3]), (st->buf[4] << 8) |
421 st->buf[5], (st->buf[6] << 8) | st->buf[7], scl_kHz);
422
423 ret = dib0700_ctrl_wr(d, st->buf, 8);
424 mutex_unlock(&d->usb_mutex);
425
426 return ret;
427}
428
429
430int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
431{
432 switch (clk_MHz) {
433 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
434 default: return -EINVAL;
435 }
436 return 0;
437}
438
439static int dib0700_jumpram(struct usb_device *udev, u32 address)
440{
441 int ret = 0, actlen;
442 u8 *buf;
443
444 buf = kmalloc(8, GFP_KERNEL);
445 if (!buf)
446 return -ENOMEM;
447 buf[0] = REQUEST_JUMPRAM;
448 buf[1] = 0;
449 buf[2] = 0;
450 buf[3] = 0;
451 buf[4] = (address >> 24) & 0xff;
452 buf[5] = (address >> 16) & 0xff;
453 buf[6] = (address >> 8) & 0xff;
454 buf[7] = address & 0xff;
455
456 if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
457 deb_fw("jumpram to 0x%x failed\n",address);
458 goto out;
459 }
460 if (actlen != 8) {
461 deb_fw("jumpram to 0x%x failed\n",address);
462 ret = -EIO;
463 goto out;
464 }
465out:
466 kfree(buf);
467 return ret;
468}
469
470int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
471{
472 struct hexline hx;
473 int pos = 0, ret, act_len, i, adap_num;
474 u8 *buf;
475 u32 fw_version;
476
477 buf = kmalloc(260, GFP_KERNEL);
478 if (!buf)
479 return -ENOMEM;
480
481 while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
482 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",
483 hx.addr, hx.len, hx.chk);
484
485 buf[0] = hx.len;
486 buf[1] = (hx.addr >> 8) & 0xff;
487 buf[2] = hx.addr & 0xff;
488 buf[3] = hx.type;
489 memcpy(&buf[4],hx.data,hx.len);
490 buf[4+hx.len] = hx.chk;
491
492 ret = usb_bulk_msg(udev,
493 usb_sndbulkpipe(udev, 0x01),
494 buf,
495 hx.len + 5,
496 &act_len,
497 1000);
498
499 if (ret < 0) {
500 err("firmware download failed at %d with %d",pos,ret);
501 goto out;
502 }
503 }
504
505 if (ret == 0) {
506 /* start the firmware */
507 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
508 info("firmware started successfully.");
509 msleep(500);
510 }
511 } else
512 ret = -EIO;
513
514 /* the number of ts packet has to be at least 1 */
515 if (nb_packet_buffer_size < 1)
516 nb_packet_buffer_size = 1;
517
518 /* get the fimware version */
519 usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
520 REQUEST_GET_VERSION,
521 USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
522 buf, 16, USB_CTRL_GET_TIMEOUT);
523 fw_version = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11];
524
525 /* set the buffer size - DVB-USB is allocating URB buffers
526 * only after the firwmare download was successful */
527 for (i = 0; i < dib0700_device_count; i++) {
528 for (adap_num = 0; adap_num < dib0700_devices[i].num_adapters;
529 adap_num++) {
530 if (fw_version >= 0x10201) {
531 dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize = 188*nb_packet_buffer_size;
532 } else {
533 /* for fw version older than 1.20.1,
534 * the buffersize has to be n times 512 */
535 dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize = ((188*nb_packet_buffer_size+188/2)/512)*512;
536 if (dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize < 512)
537 dib0700_devices[i].adapter[adap_num].stream.u.bulk.buffersize = 512;
538 }
539 }
540 }
541out:
542 kfree(buf);
543 return ret;
544}
545
546int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
547{
548 struct dib0700_state *st = adap->dev->priv;
549 int ret;
550
551 if ((onoff != 0) && (st->fw_version >= 0x10201)) {
552 /* for firmware later than 1.20.1,
553 * the USB xfer length can be set */
554 ret = dib0700_set_usb_xfer_len(adap->dev,
555 st->nb_packet_buffer_size);
556 if (ret < 0) {
557 deb_info("can not set the USB xfer len\n");
558 return ret;
559 }
560 }
561
562 if (mutex_lock_interruptible(&adap->dev->usb_mutex) < 0) {
563 deb_info("could not acquire lock");
564 return 0;
565 }
566
567 st->buf[0] = REQUEST_ENABLE_VIDEO;
568 /* this bit gives a kind of command,
569 * rather than enabling something or not */
570 st->buf[1] = (onoff << 4) | 0x00;
571
572 if (st->disable_streaming_master_mode == 1)
573 st->buf[2] = 0x00;
574 else
575 st->buf[2] = 0x01 << 4; /* Master mode */
576
577 st->buf[3] = 0x00;
578
579 deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
580
581 st->channel_state &= ~0x3;
582 if ((adap->stream.props.endpoint != 2)
583 && (adap->stream.props.endpoint != 3)) {
584 deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->stream.props.endpoint);
585 if (onoff)
586 st->channel_state |= 1 << (adap->id);
587 else
588 st->channel_state |= 1 << ~(adap->id);
589 } else {
590 if (onoff)
591 st->channel_state |= 1 << (adap->stream.props.endpoint-2);
592 else
593 st->channel_state |= 1 << (3-adap->stream.props.endpoint);
594 }
595
596 st->buf[2] |= st->channel_state;
597
598 deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]);
599
600 ret = dib0700_ctrl_wr(adap->dev, st->buf, 4);
601 mutex_unlock(&adap->dev->usb_mutex);
602
603 return ret;
604}
605
606int dib0700_change_protocol(struct rc_dev *rc, u64 rc_type)
607{
608 struct dvb_usb_device *d = rc->priv;
609 struct dib0700_state *st = d->priv;
610 int new_proto, ret;
611
612 if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
613 deb_info("could not acquire lock");
614 return 0;
615 }
616
617 st->buf[0] = REQUEST_SET_RC;
618 st->buf[1] = 0;
619 st->buf[2] = 0;
620
621 /* Set the IR mode */
622 if (rc_type == RC_TYPE_RC5)
623 new_proto = 1;
624 else if (rc_type == RC_TYPE_NEC)
625 new_proto = 0;
626 else if (rc_type == RC_TYPE_RC6) {
627 if (st->fw_version < 0x10200) {
628 ret = -EINVAL;
629 goto out;
630 }
631
632 new_proto = 2;
633 } else {
634 ret = -EINVAL;
635 goto out;
636 }
637
638 st->buf[1] = new_proto;
639
640 ret = dib0700_ctrl_wr(d, st->buf, 3);
641 if (ret < 0) {
642 err("ir protocol setup failed");
643 goto out;
644 }
645
646 d->props.rc.core.protocol = rc_type;
647
648out:
649 mutex_unlock(&d->usb_mutex);
650 return ret;
651}
652
653/* Number of keypresses to ignore before start repeating */
654#define RC_REPEAT_DELAY_V1_20 10
655
656/* This is the structure of the RC response packet starting in firmware 1.20 */
657struct dib0700_rc_response {
658 u8 report_id;
659 u8 data_state;
660 union {
661 u16 system16;
662 struct {
663 u8 not_system;
664 u8 system;
665 };
666 };
667 u8 data;
668 u8 not_data;
669};
670#define RC_MSG_SIZE_V1_20 6
671
672static void dib0700_rc_urb_completion(struct urb *purb)
673{
674 struct dvb_usb_device *d = purb->context;
675 struct dib0700_rc_response *poll_reply;
676 u32 uninitialized_var(keycode);
677 u8 toggle;
678
679 deb_info("%s()\n", __func__);
680 if (d == NULL)
681 return;
682
683 if (d->rc_dev == NULL) {
684 /* This will occur if disable_rc_polling=1 */
685 usb_free_urb(purb);
686 return;
687 }
688
689 poll_reply = purb->transfer_buffer;
690
691 if (purb->status < 0) {
692 deb_info("discontinuing polling\n");
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_TYPE_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
749resubmit:
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
757int 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\n");
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\n");
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\n");
789
790 return ret;
791}
792
793static int dib0700_probe(struct usb_interface *intf,
794 const struct usb_device_id *id)
795{
796 int i;
797 struct dvb_usb_device *dev;
798
799 for (i = 0; i < dib0700_device_count; i++)
800 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
801 &dev, adapter_nr) == 0) {
802 struct dib0700_state *st = dev->priv;
803 u32 hwversion, romversion, fw_version, fwtype;
804
805 dib0700_get_version(dev, &hwversion, &romversion,
806 &fw_version, &fwtype);
807
808 deb_info("Firmware version: %x, %d, 0x%x, %d\n",
809 hwversion, romversion, fw_version, fwtype);
810
811 st->fw_version = fw_version;
812 st->nb_packet_buffer_size = (u32)nb_packet_buffer_size;
813
814 /* Disable polling mode on newer firmwares */
815 if (st->fw_version >= 0x10200)
816 dev->props.rc.core.bulk_mode = true;
817 else
818 dev->props.rc.core.bulk_mode = false;
819
820 dib0700_rc_setup(dev);
821
822 return 0;
823 }
824
825 return -ENODEV;
826}
827
828static struct usb_driver dib0700_driver = {
829 .name = "dvb_usb_dib0700",
830 .probe = dib0700_probe,
831 .disconnect = dvb_usb_device_exit,
832 .id_table = dib0700_usb_id_table,
833};
834
835/* module stuff */
836static int __init dib0700_module_init(void)
837{
838 int result;
839 info("loaded with support for %d different device-types", dib0700_device_count);
840 if ((result = usb_register(&dib0700_driver))) {
841 err("usb_register failed. Error number %d",result);
842 return result;
843 }
844
845 return 0;
846}
847
848static void __exit dib0700_module_exit(void)
849{
850 /* deregister this driver from the USB subsystem */
851 usb_deregister(&dib0700_driver);
852}
853
854module_init (dib0700_module_init);
855module_exit (dib0700_module_exit);
856
857MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
858MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
859MODULE_VERSION("1.0");
860MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-26 19:04:57 -0500