1 /*
2 * tm6000-dvb.c - dvb-t support for TM5600/TM6000/TM6010 USB video capture devices
3 *
4 * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation version 2
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/usb.h>
19
20 #include "tm6000.h"
21 #include "tm6000-regs.h"
22
23 #include "zl10353.h"
24
25 #include <media/tuner.h>
26
27 #include "tuner-xc2028.h"
28 #include "xc5000.h"
29
30 MODULE_DESCRIPTION("DVB driver extension module for tm5600/6000/6010 based TV cards");
31 MODULE_AUTHOR("Mauro Carvalho Chehab");
32 MODULE_LICENSE("GPL");
33
34 MODULE_SUPPORTED_DEVICE("{{Trident, tm5600},{{Trident, tm6000},{{Trident, tm6010}");
35
36 static int debug;
37
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "enable debug message");
40
print_err_status(struct tm6000_core * dev,int packet,int status)41 static inline void print_err_status(struct tm6000_core *dev,
42 int packet, int status)
43 {
44 char *errmsg = "Unknown";
45
46 switch (status) {
47 case -ENOENT:
48 errmsg = "unlinked synchronously";
49 break;
50 case -ECONNRESET:
51 errmsg = "unlinked asynchronously";
52 break;
53 case -ENOSR:
54 errmsg = "Buffer error (overrun)";
55 break;
56 case -EPIPE:
57 errmsg = "Stalled (device not responding)";
58 break;
59 case -EOVERFLOW:
60 errmsg = "Babble (bad cable?)";
61 break;
62 case -EPROTO:
63 errmsg = "Bit-stuff error (bad cable?)";
64 break;
65 case -EILSEQ:
66 errmsg = "CRC/Timeout (could be anything)";
67 break;
68 case -ETIME:
69 errmsg = "Device does not respond";
70 break;
71 }
72 if (packet < 0) {
73 dprintk(dev, 1, "URB status %d [%s].\n",
74 status, errmsg);
75 } else {
76 dprintk(dev, 1, "URB packet %d, status %d [%s].\n",
77 packet, status, errmsg);
78 }
79 }
80
tm6000_urb_received(struct urb * urb)81 static void tm6000_urb_received(struct urb *urb)
82 {
83 int ret;
84 struct tm6000_core *dev = urb->context;
85
86 switch (urb->status) {
87 case 0:
88 case -ETIMEDOUT:
89 break;
90 case -ENOENT:
91 case -ECONNRESET:
92 case -ESHUTDOWN:
93 return;
94 default:
95 print_err_status(dev, 0, urb->status);
96 }
97
98 if (urb->actual_length > 0)
99 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
100 urb->actual_length);
101
102 if (dev->dvb->streams > 0) {
103 ret = usb_submit_urb(urb, GFP_ATOMIC);
104 if (ret < 0) {
105 printk(KERN_ERR "tm6000: error %s\n", __func__);
106 kfree(urb->transfer_buffer);
107 usb_free_urb(urb);
108 }
109 }
110 }
111
tm6000_start_stream(struct tm6000_core * dev)112 static int tm6000_start_stream(struct tm6000_core *dev)
113 {
114 int ret;
115 unsigned int pipe, size;
116 struct tm6000_dvb *dvb = dev->dvb;
117
118 printk(KERN_INFO "tm6000: got start stream request %s\n", __func__);
119
120 if (dev->mode != TM6000_MODE_DIGITAL) {
121 tm6000_init_digital_mode(dev);
122 dev->mode = TM6000_MODE_DIGITAL;
123 }
124
125 dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
126 if (!dvb->bulk_urb)
127 return -ENOMEM;
128
129 pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
130 & USB_ENDPOINT_NUMBER_MASK);
131
132 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
133 size = size * 15; /* 512 x 8 or 12 or 15 */
134
135 dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
136 if (!dvb->bulk_urb->transfer_buffer) {
137 usb_free_urb(dvb->bulk_urb);
138 return -ENOMEM;
139 }
140
141 usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
142 dvb->bulk_urb->transfer_buffer,
143 size,
144 tm6000_urb_received, dev);
145
146 ret = usb_clear_halt(dev->udev, pipe);
147 if (ret < 0) {
148 printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
149 ret, __func__);
150 return ret;
151 } else
152 printk(KERN_ERR "tm6000: pipe resetted\n");
153
154 /* mutex_lock(&tm6000_driver.open_close_mutex); */
155 ret = usb_submit_urb(dvb->bulk_urb, GFP_ATOMIC);
156
157 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
158 if (ret) {
159 printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",
160 ret);
161
162 kfree(dvb->bulk_urb->transfer_buffer);
163 usb_free_urb(dvb->bulk_urb);
164 return ret;
165 }
166
167 return 0;
168 }
169
tm6000_stop_stream(struct tm6000_core * dev)170 static void tm6000_stop_stream(struct tm6000_core *dev)
171 {
172 struct tm6000_dvb *dvb = dev->dvb;
173
174 if (dvb->bulk_urb) {
175 printk(KERN_INFO "urb killing\n");
176 usb_kill_urb(dvb->bulk_urb);
177 printk(KERN_INFO "urb buffer free\n");
178 kfree(dvb->bulk_urb->transfer_buffer);
179 usb_free_urb(dvb->bulk_urb);
180 dvb->bulk_urb = NULL;
181 }
182 }
183
tm6000_start_feed(struct dvb_demux_feed * feed)184 static int tm6000_start_feed(struct dvb_demux_feed *feed)
185 {
186 struct dvb_demux *demux = feed->demux;
187 struct tm6000_core *dev = demux->priv;
188 struct tm6000_dvb *dvb = dev->dvb;
189 printk(KERN_INFO "tm6000: got start feed request %s\n", __func__);
190
191 mutex_lock(&dvb->mutex);
192 if (dvb->streams == 0) {
193 dvb->streams = 1;
194 /* mutex_init(&tm6000_dev->streming_mutex); */
195 tm6000_start_stream(dev);
196 } else
197 ++(dvb->streams);
198 mutex_unlock(&dvb->mutex);
199
200 return 0;
201 }
202
tm6000_stop_feed(struct dvb_demux_feed * feed)203 static int tm6000_stop_feed(struct dvb_demux_feed *feed)
204 {
205 struct dvb_demux *demux = feed->demux;
206 struct tm6000_core *dev = demux->priv;
207 struct tm6000_dvb *dvb = dev->dvb;
208
209 printk(KERN_INFO "tm6000: got stop feed request %s\n", __func__);
210
211 mutex_lock(&dvb->mutex);
212
213 printk(KERN_INFO "stream %#x\n", dvb->streams);
214 --(dvb->streams);
215 if (dvb->streams == 0) {
216 printk(KERN_INFO "stop stream\n");
217 tm6000_stop_stream(dev);
218 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
219 }
220 mutex_unlock(&dvb->mutex);
221 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
222
223 return 0;
224 }
225
tm6000_dvb_attach_frontend(struct tm6000_core * dev)226 static int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
227 {
228 struct tm6000_dvb *dvb = dev->dvb;
229
230 if (dev->caps.has_zl10353) {
231 struct zl10353_config config = {
232 .demod_address = dev->demod_addr,
233 .no_tuner = 1,
234 .parallel_ts = 1,
235 .if2 = 45700,
236 .disable_i2c_gate_ctrl = 1,
237 };
238
239 dvb->frontend = dvb_attach(zl10353_attach, &config,
240 &dev->i2c_adap);
241 } else {
242 printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
243 return -1;
244 }
245
246 return (!dvb->frontend) ? -1 : 0;
247 }
248
249 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
250
register_dvb(struct tm6000_core * dev)251 static int register_dvb(struct tm6000_core *dev)
252 {
253 int ret = -1;
254 struct tm6000_dvb *dvb = dev->dvb;
255
256 mutex_init(&dvb->mutex);
257
258 dvb->streams = 0;
259
260 /* attach the frontend */
261 ret = tm6000_dvb_attach_frontend(dev);
262 if (ret < 0) {
263 printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
264 goto err;
265 }
266
267 ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
268 THIS_MODULE, &dev->udev->dev, adapter_nr);
269 if (ret < 0) {
270 pr_err("tm6000: couldn't register the adapter!\n");
271 goto err;
272 }
273
274 dvb->adapter.priv = dev;
275
276 if (dvb->frontend) {
277 switch (dev->tuner_type) {
278 case TUNER_XC2028: {
279 struct xc2028_config cfg = {
280 .i2c_adap = &dev->i2c_adap,
281 .i2c_addr = dev->tuner_addr,
282 };
283
284 dvb->frontend->callback = tm6000_tuner_callback;
285 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
286 if (ret < 0) {
287 printk(KERN_ERR
288 "tm6000: couldn't register frontend\n");
289 goto adapter_err;
290 }
291
292 if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
293 printk(KERN_ERR "tm6000: couldn't register frontend (xc3028)\n");
294 ret = -EINVAL;
295 goto frontend_err;
296 }
297 printk(KERN_INFO "tm6000: XC2028/3028 asked to be attached to frontend!\n");
298 break;
299 }
300 case TUNER_XC5000: {
301 struct xc5000_config cfg = {
302 .i2c_address = dev->tuner_addr,
303 };
304
305 dvb->frontend->callback = tm6000_xc5000_callback;
306 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
307 if (ret < 0) {
308 printk(KERN_ERR
309 "tm6000: couldn't register frontend\n");
310 goto adapter_err;
311 }
312
313 if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) {
314 printk(KERN_ERR "tm6000: couldn't register frontend (xc5000)\n");
315 ret = -EINVAL;
316 goto frontend_err;
317 }
318 printk(KERN_INFO "tm6000: XC5000 asked to be attached to frontend!\n");
319 break;
320 }
321 }
322 } else
323 printk(KERN_ERR "tm6000: no frontend found\n");
324
325 dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
326 | DMX_MEMORY_BASED_FILTERING;
327 dvb->demux.priv = dev;
328 dvb->demux.filternum = 8;
329 dvb->demux.feednum = 8;
330 dvb->demux.start_feed = tm6000_start_feed;
331 dvb->demux.stop_feed = tm6000_stop_feed;
332 dvb->demux.write_to_decoder = NULL;
333 ret = dvb_dmx_init(&dvb->demux);
334 if (ret < 0) {
335 printk(KERN_ERR "tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
336 goto frontend_err;
337 }
338
339 dvb->dmxdev.filternum = dev->dvb->demux.filternum;
340 dvb->dmxdev.demux = &dev->dvb->demux.dmx;
341 dvb->dmxdev.capabilities = 0;
342
343 ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
344 if (ret < 0) {
345 printk(KERN_ERR "tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
346 goto dvb_dmx_err;
347 }
348
349 return 0;
350
351 dvb_dmx_err:
352 dvb_dmx_release(&dvb->demux);
353 frontend_err:
354 if (dvb->frontend) {
355 dvb_unregister_frontend(dvb->frontend);
356 dvb_frontend_detach(dvb->frontend);
357 }
358 adapter_err:
359 dvb_unregister_adapter(&dvb->adapter);
360 err:
361 return ret;
362 }
363
unregister_dvb(struct tm6000_core * dev)364 static void unregister_dvb(struct tm6000_core *dev)
365 {
366 struct tm6000_dvb *dvb = dev->dvb;
367
368 if (dvb->bulk_urb) {
369 struct urb *bulk_urb = dvb->bulk_urb;
370
371 kfree(bulk_urb->transfer_buffer);
372 bulk_urb->transfer_buffer = NULL;
373 usb_unlink_urb(bulk_urb);
374 usb_free_urb(bulk_urb);
375 }
376
377 /* mutex_lock(&tm6000_driver.open_close_mutex); */
378 if (dvb->frontend) {
379 dvb_unregister_frontend(dvb->frontend);
380 dvb_frontend_detach(dvb->frontend);
381 }
382
383 dvb_dmxdev_release(&dvb->dmxdev);
384 dvb_dmx_release(&dvb->demux);
385 dvb_unregister_adapter(&dvb->adapter);
386 mutex_destroy(&dvb->mutex);
387 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
388 }
389
dvb_init(struct tm6000_core * dev)390 static int dvb_init(struct tm6000_core *dev)
391 {
392 struct tm6000_dvb *dvb;
393 int rc;
394
395 if (!dev)
396 return 0;
397
398 if (!dev->caps.has_dvb)
399 return 0;
400
401 if (dev->udev->speed == USB_SPEED_FULL) {
402 printk(KERN_INFO "This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)\n");
403 return 0;
404 }
405
406 dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL);
407 if (!dvb)
408 return -ENOMEM;
409
410 dev->dvb = dvb;
411
412 rc = register_dvb(dev);
413 if (rc < 0) {
414 kfree(dvb);
415 dev->dvb = NULL;
416 return 0;
417 }
418
419 return 0;
420 }
421
dvb_fini(struct tm6000_core * dev)422 static int dvb_fini(struct tm6000_core *dev)
423 {
424 if (!dev)
425 return 0;
426
427 if (!dev->caps.has_dvb)
428 return 0;
429
430 if (dev->dvb) {
431 unregister_dvb(dev);
432 kfree(dev->dvb);
433 dev->dvb = NULL;
434 }
435
436 return 0;
437 }
438
439 static struct tm6000_ops dvb_ops = {
440 .type = TM6000_DVB,
441 .name = "TM6000 dvb Extension",
442 .init = dvb_init,
443 .fini = dvb_fini,
444 };
445
tm6000_dvb_register(void)446 static int __init tm6000_dvb_register(void)
447 {
448 return tm6000_register_extension(&dvb_ops);
449 }
450
tm6000_dvb_unregister(void)451 static void __exit tm6000_dvb_unregister(void)
452 {
453 tm6000_unregister_extension(&dvb_ops);
454 }
455
456 module_init(tm6000_dvb_register);
457 module_exit(tm6000_dvb_unregister);
458
