2 * tm6000-dvb.c - dvb-t support for TM5600/TM6000/TM6010 USB video capture devices
4 * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
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
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.
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/usb.h>
21 #include "tm6000-regs.h"
25 #include <media/tuner.h>
27 #include "tuner-xc2028.h"
30 MODULE_DESCRIPTION("DVB driver extension module for tm5600/6000/6010 based TV cards");
31 MODULE_AUTHOR("Mauro Carvalho Chehab");
32 MODULE_LICENSE("GPL");
34 MODULE_SUPPORTED_DEVICE("{{Trident, tm5600},{{Trident, tm6000},{{Trident, tm6010}");
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "enable debug message");
41 static inline void print_err_status(struct tm6000_core *dev,
42 int packet, int status)
44 char *errmsg = "Unknown";
48 errmsg = "unlinked synchronuously";
51 errmsg = "unlinked asynchronuously";
54 errmsg = "Buffer error (overrun)";
57 errmsg = "Stalled (device not responding)";
60 errmsg = "Babble (bad cable?)";
63 errmsg = "Bit-stuff error (bad cable?)";
66 errmsg = "CRC/Timeout (could be anything)";
69 errmsg = "Device does not respond";
73 dprintk(dev, 1, "URB status %d [%s].\n",
76 dprintk(dev, 1, "URB packet %d, status %d [%s].\n",
77 packet, status, errmsg);
81 static void tm6000_urb_received(struct urb *urb)
84 struct tm6000_core *dev = urb->context;
86 switch (urb->status) {
95 print_err_status(dev, 0, urb->status);
98 if (urb->actual_length > 0)
99 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
102 if (dev->dvb->streams > 0) {
103 ret = usb_submit_urb(urb, GFP_ATOMIC);
105 printk(KERN_ERR "tm6000: error %s\n", __func__);
106 kfree(urb->transfer_buffer);
108 dev->dvb->bulk_urb = NULL;
113 static int tm6000_start_stream(struct tm6000_core *dev)
116 unsigned int pipe, size;
117 struct tm6000_dvb *dvb = dev->dvb;
119 printk(KERN_INFO "tm6000: got start stream request %s\n", __func__);
121 if (dev->mode != TM6000_MODE_DIGITAL) {
122 tm6000_init_digital_mode(dev);
123 dev->mode = TM6000_MODE_DIGITAL;
126 dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
127 if (dvb->bulk_urb == NULL)
130 pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
131 & USB_ENDPOINT_NUMBER_MASK);
133 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
134 size = size * 15; /* 512 x 8 or 12 or 15 */
136 dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
137 if (dvb->bulk_urb->transfer_buffer == NULL) {
138 usb_free_urb(dvb->bulk_urb);
139 dvb->bulk_urb = NULL;
140 printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n");
144 usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
145 dvb->bulk_urb->transfer_buffer,
147 tm6000_urb_received, dev);
149 ret = usb_clear_halt(dev->udev, pipe);
151 printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
154 kfree(dvb->bulk_urb->transfer_buffer);
155 usb_free_urb(dvb->bulk_urb);
156 dvb->bulk_urb = NULL;
159 printk(KERN_ERR "tm6000: pipe resetted\n");
161 /* mutex_lock(&tm6000_driver.open_close_mutex); */
162 ret = usb_submit_urb(dvb->bulk_urb, GFP_ATOMIC);
164 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
166 printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",
169 kfree(dvb->bulk_urb->transfer_buffer);
170 usb_free_urb(dvb->bulk_urb);
171 dvb->bulk_urb = NULL;
178 static void tm6000_stop_stream(struct tm6000_core *dev)
180 struct tm6000_dvb *dvb = dev->dvb;
183 printk(KERN_INFO "urb killing\n");
184 usb_kill_urb(dvb->bulk_urb);
185 printk(KERN_INFO "urb buffer free\n");
186 kfree(dvb->bulk_urb->transfer_buffer);
187 usb_free_urb(dvb->bulk_urb);
188 dvb->bulk_urb = NULL;
192 static int tm6000_start_feed(struct dvb_demux_feed *feed)
194 struct dvb_demux *demux = feed->demux;
195 struct tm6000_core *dev = demux->priv;
196 struct tm6000_dvb *dvb = dev->dvb;
197 printk(KERN_INFO "tm6000: got start feed request %s\n", __func__);
199 mutex_lock(&dvb->mutex);
200 if (dvb->streams == 0) {
202 /* mutex_init(&tm6000_dev->streming_mutex); */
203 tm6000_start_stream(dev);
206 mutex_unlock(&dvb->mutex);
211 static int tm6000_stop_feed(struct dvb_demux_feed *feed)
213 struct dvb_demux *demux = feed->demux;
214 struct tm6000_core *dev = demux->priv;
215 struct tm6000_dvb *dvb = dev->dvb;
217 printk(KERN_INFO "tm6000: got stop feed request %s\n", __func__);
219 mutex_lock(&dvb->mutex);
221 printk(KERN_INFO "stream %#x\n", dvb->streams);
223 if (dvb->streams == 0) {
224 printk(KERN_INFO "stop stream\n");
225 tm6000_stop_stream(dev);
226 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
228 mutex_unlock(&dvb->mutex);
229 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
234 static int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
236 struct tm6000_dvb *dvb = dev->dvb;
238 if (dev->caps.has_zl10353) {
239 struct zl10353_config config = {
240 .demod_address = dev->demod_addr,
244 .disable_i2c_gate_ctrl = 1,
247 dvb->frontend = dvb_attach(zl10353_attach, &config,
250 printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
254 return (!dvb->frontend) ? -1 : 0;
257 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
259 static int register_dvb(struct tm6000_core *dev)
262 struct tm6000_dvb *dvb = dev->dvb;
264 mutex_init(&dvb->mutex);
268 /* attach the frontend */
269 ret = tm6000_dvb_attach_frontend(dev);
271 printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
275 ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
276 THIS_MODULE, &dev->udev->dev, adapter_nr);
278 pr_err("tm6000: couldn't register the adapter!\n");
282 dvb->adapter.priv = dev;
285 switch (dev->tuner_type) {
287 struct xc2028_config cfg = {
288 .i2c_adap = &dev->i2c_adap,
289 .i2c_addr = dev->tuner_addr,
292 dvb->frontend->callback = tm6000_tuner_callback;
293 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
296 "tm6000: couldn't register frontend\n");
300 if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
301 printk(KERN_ERR "tm6000: couldn't register frontend (xc3028)\n");
305 printk(KERN_INFO "tm6000: XC2028/3028 asked to be attached to frontend!\n");
309 struct xc5000_config cfg = {
310 .i2c_address = dev->tuner_addr,
313 dvb->frontend->callback = tm6000_xc5000_callback;
314 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
317 "tm6000: couldn't register frontend\n");
321 if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) {
322 printk(KERN_ERR "tm6000: couldn't register frontend (xc5000)\n");
326 printk(KERN_INFO "tm6000: XC5000 asked to be attached to frontend!\n");
331 printk(KERN_ERR "tm6000: no frontend found\n");
333 dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
334 | DMX_MEMORY_BASED_FILTERING;
335 dvb->demux.priv = dev;
336 dvb->demux.filternum = 8;
337 dvb->demux.feednum = 8;
338 dvb->demux.start_feed = tm6000_start_feed;
339 dvb->demux.stop_feed = tm6000_stop_feed;
340 dvb->demux.write_to_decoder = NULL;
341 ret = dvb_dmx_init(&dvb->demux);
343 printk(KERN_ERR "tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
347 dvb->dmxdev.filternum = dev->dvb->demux.filternum;
348 dvb->dmxdev.demux = &dev->dvb->demux.dmx;
349 dvb->dmxdev.capabilities = 0;
351 ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
353 printk(KERN_ERR "tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
360 dvb_dmx_release(&dvb->demux);
363 dvb_unregister_frontend(dvb->frontend);
364 dvb_frontend_detach(dvb->frontend);
367 dvb_unregister_adapter(&dvb->adapter);
372 static void unregister_dvb(struct tm6000_core *dev)
374 struct tm6000_dvb *dvb = dev->dvb;
376 if (dvb->bulk_urb != NULL) {
377 struct urb *bulk_urb = dvb->bulk_urb;
379 kfree(bulk_urb->transfer_buffer);
380 bulk_urb->transfer_buffer = NULL;
381 usb_unlink_urb(bulk_urb);
382 usb_free_urb(bulk_urb);
385 /* mutex_lock(&tm6000_driver.open_close_mutex); */
387 dvb_unregister_frontend(dvb->frontend);
388 dvb_frontend_detach(dvb->frontend);
391 dvb_dmxdev_release(&dvb->dmxdev);
392 dvb_dmx_release(&dvb->demux);
393 dvb_unregister_adapter(&dvb->adapter);
394 mutex_destroy(&dvb->mutex);
395 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
398 static int dvb_init(struct tm6000_core *dev)
400 struct tm6000_dvb *dvb;
406 if (!dev->caps.has_dvb)
409 if (dev->udev->speed == USB_SPEED_FULL) {
410 printk(KERN_INFO "This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)\n");
414 dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL);
416 printk(KERN_INFO "Cannot allocate memory\n");
422 rc = register_dvb(dev);
432 static int dvb_fini(struct tm6000_core *dev)
437 if (!dev->caps.has_dvb)
449 static struct tm6000_ops dvb_ops = {
451 .name = "TM6000 dvb Extension",
456 static int __init tm6000_dvb_register(void)
458 return tm6000_register_extension(&dvb_ops);
461 static void __exit tm6000_dvb_unregister(void)
463 tm6000_unregister_extension(&dvb_ops);
466 module_init(tm6000_dvb_register);
467 module_exit(tm6000_dvb_unregister);