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.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <linux/kernel.h>
21 #include <linux/slab.h>
22 #include <linux/usb.h>
25 #include "tm6000-regs.h"
29 #include <media/tuner.h>
31 #include "tuner-xc2028.h"
34 MODULE_DESCRIPTION("DVB driver extension module for tm5600/6000/6010 based TV cards");
35 MODULE_AUTHOR("Mauro Carvalho Chehab");
36 MODULE_LICENSE("GPL");
38 MODULE_SUPPORTED_DEVICE("{{Trident, tm5600},"
40 "{{Trident, tm6010}");
44 module_param(debug, int, 0644);
45 MODULE_PARM_DESC(debug, "enable debug message");
47 static inline void print_err_status(struct tm6000_core *dev,
48 int packet, int status)
50 char *errmsg = "Unknown";
54 errmsg = "unlinked synchronuously";
57 errmsg = "unlinked asynchronuously";
60 errmsg = "Buffer error (overrun)";
63 errmsg = "Stalled (device not responding)";
66 errmsg = "Babble (bad cable?)";
69 errmsg = "Bit-stuff error (bad cable?)";
72 errmsg = "CRC/Timeout (could be anything)";
75 errmsg = "Device does not respond";
79 dprintk(dev, 1, "URB status %d [%s].\n",
82 dprintk(dev, 1, "URB packet %d, status %d [%s].\n",
83 packet, status, errmsg);
87 static void tm6000_urb_received(struct urb *urb)
90 struct tm6000_core *dev = urb->context;
92 switch (urb->status) {
101 print_err_status(dev, 0, urb->status);
104 if (urb->actual_length > 0)
105 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
108 if (dev->dvb->streams > 0) {
109 ret = usb_submit_urb(urb, GFP_ATOMIC);
111 printk(KERN_ERR "tm6000: error %s\n", __func__);
112 kfree(urb->transfer_buffer);
114 dev->dvb->bulk_urb = NULL;
119 static int tm6000_start_stream(struct tm6000_core *dev)
122 unsigned int pipe, size;
123 struct tm6000_dvb *dvb = dev->dvb;
125 printk(KERN_INFO "tm6000: got start stream request %s\n", __func__);
127 if (dev->mode != TM6000_MODE_DIGITAL) {
128 tm6000_init_digital_mode(dev);
129 dev->mode = TM6000_MODE_DIGITAL;
132 dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
133 if (dvb->bulk_urb == NULL) {
134 printk(KERN_ERR "tm6000: couldn't allocate urb\n");
138 pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
139 & USB_ENDPOINT_NUMBER_MASK);
141 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
142 size = size * 15; /* 512 x 8 or 12 or 15 */
144 dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
145 if (dvb->bulk_urb->transfer_buffer == NULL) {
146 usb_free_urb(dvb->bulk_urb);
147 dvb->bulk_urb = NULL;
148 printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n");
152 usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
153 dvb->bulk_urb->transfer_buffer,
155 tm6000_urb_received, dev);
157 ret = usb_clear_halt(dev->udev, pipe);
159 printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
162 kfree(dvb->bulk_urb->transfer_buffer);
163 usb_free_urb(dvb->bulk_urb);
164 dvb->bulk_urb = NULL;
167 printk(KERN_ERR "tm6000: pipe resetted\n");
169 /* mutex_lock(&tm6000_driver.open_close_mutex); */
170 ret = usb_submit_urb(dvb->bulk_urb, GFP_ATOMIC);
172 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
174 printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",
177 kfree(dvb->bulk_urb->transfer_buffer);
178 usb_free_urb(dvb->bulk_urb);
179 dvb->bulk_urb = NULL;
186 static void tm6000_stop_stream(struct tm6000_core *dev)
188 struct tm6000_dvb *dvb = dev->dvb;
191 printk(KERN_INFO "urb killing\n");
192 usb_kill_urb(dvb->bulk_urb);
193 printk(KERN_INFO "urb buffer free\n");
194 kfree(dvb->bulk_urb->transfer_buffer);
195 usb_free_urb(dvb->bulk_urb);
196 dvb->bulk_urb = NULL;
200 static int tm6000_start_feed(struct dvb_demux_feed *feed)
202 struct dvb_demux *demux = feed->demux;
203 struct tm6000_core *dev = demux->priv;
204 struct tm6000_dvb *dvb = dev->dvb;
205 printk(KERN_INFO "tm6000: got start feed request %s\n", __func__);
207 mutex_lock(&dvb->mutex);
208 if (dvb->streams == 0) {
210 /* mutex_init(&tm6000_dev->streming_mutex); */
211 tm6000_start_stream(dev);
214 mutex_unlock(&dvb->mutex);
219 static int tm6000_stop_feed(struct dvb_demux_feed *feed)
221 struct dvb_demux *demux = feed->demux;
222 struct tm6000_core *dev = demux->priv;
223 struct tm6000_dvb *dvb = dev->dvb;
225 printk(KERN_INFO "tm6000: got stop feed request %s\n", __func__);
227 mutex_lock(&dvb->mutex);
229 printk(KERN_INFO "stream %#x\n", dvb->streams);
231 if (dvb->streams == 0) {
232 printk(KERN_INFO "stop stream\n");
233 tm6000_stop_stream(dev);
234 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
236 mutex_unlock(&dvb->mutex);
237 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
242 static int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
244 struct tm6000_dvb *dvb = dev->dvb;
246 if (dev->caps.has_zl10353) {
247 struct zl10353_config config = {
248 .demod_address = dev->demod_addr,
252 .disable_i2c_gate_ctrl = 1,
255 dvb->frontend = dvb_attach(zl10353_attach, &config,
258 printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
262 return (!dvb->frontend) ? -1 : 0;
265 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
267 static int register_dvb(struct tm6000_core *dev)
270 struct tm6000_dvb *dvb = dev->dvb;
272 mutex_init(&dvb->mutex);
276 /* attach the frontend */
277 ret = tm6000_dvb_attach_frontend(dev);
279 printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
283 ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
284 THIS_MODULE, &dev->udev->dev, adapter_nr);
286 pr_err("tm6000: couldn't register the adapter!\n");
290 dvb->adapter.priv = dev;
293 switch (dev->tuner_type) {
295 struct xc2028_config cfg = {
296 .i2c_adap = &dev->i2c_adap,
297 .i2c_addr = dev->tuner_addr,
300 dvb->frontend->callback = tm6000_tuner_callback;
301 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
304 "tm6000: couldn't register frontend\n");
308 if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
309 printk(KERN_ERR "tm6000: couldn't register "
310 "frontend (xc3028)\n");
314 printk(KERN_INFO "tm6000: XC2028/3028 asked to be "
315 "attached to frontend!\n");
319 struct xc5000_config cfg = {
320 .i2c_address = dev->tuner_addr,
323 dvb->frontend->callback = tm6000_xc5000_callback;
324 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
327 "tm6000: couldn't register frontend\n");
331 if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) {
332 printk(KERN_ERR "tm6000: couldn't register "
333 "frontend (xc5000)\n");
337 printk(KERN_INFO "tm6000: XC5000 asked to be "
338 "attached to frontend!\n");
343 printk(KERN_ERR "tm6000: no frontend found\n");
345 dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
346 | DMX_MEMORY_BASED_FILTERING;
347 dvb->demux.priv = dev;
348 dvb->demux.filternum = 8;
349 dvb->demux.feednum = 8;
350 dvb->demux.start_feed = tm6000_start_feed;
351 dvb->demux.stop_feed = tm6000_stop_feed;
352 dvb->demux.write_to_decoder = NULL;
353 ret = dvb_dmx_init(&dvb->demux);
355 printk(KERN_ERR "tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
359 dvb->dmxdev.filternum = dev->dvb->demux.filternum;
360 dvb->dmxdev.demux = &dev->dvb->demux.dmx;
361 dvb->dmxdev.capabilities = 0;
363 ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
365 printk(KERN_ERR "tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
372 dvb_dmx_release(&dvb->demux);
375 dvb_unregister_frontend(dvb->frontend);
376 dvb_frontend_detach(dvb->frontend);
379 dvb_unregister_adapter(&dvb->adapter);
384 static void unregister_dvb(struct tm6000_core *dev)
386 struct tm6000_dvb *dvb = dev->dvb;
388 if (dvb->bulk_urb != NULL) {
389 struct urb *bulk_urb = dvb->bulk_urb;
391 kfree(bulk_urb->transfer_buffer);
392 bulk_urb->transfer_buffer = NULL;
393 usb_unlink_urb(bulk_urb);
394 usb_free_urb(bulk_urb);
397 /* mutex_lock(&tm6000_driver.open_close_mutex); */
399 dvb_unregister_frontend(dvb->frontend);
400 dvb_frontend_detach(dvb->frontend);
403 dvb_dmxdev_release(&dvb->dmxdev);
404 dvb_dmx_release(&dvb->demux);
405 dvb_unregister_adapter(&dvb->adapter);
406 mutex_destroy(&dvb->mutex);
407 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
410 static int dvb_init(struct tm6000_core *dev)
412 struct tm6000_dvb *dvb;
418 if (!dev->caps.has_dvb)
421 if (dev->udev->speed == USB_SPEED_FULL) {
422 printk(KERN_INFO "This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)\n");
426 dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL);
428 printk(KERN_INFO "Cannot allocate memory\n");
434 rc = register_dvb(dev);
444 static int dvb_fini(struct tm6000_core *dev)
449 if (!dev->caps.has_dvb)
461 static struct tm6000_ops dvb_ops = {
463 .name = "TM6000 dvb Extension",
468 static int __init tm6000_dvb_register(void)
470 return tm6000_register_extension(&dvb_ops);
473 static void __exit tm6000_dvb_unregister(void)
475 tm6000_unregister_extension(&dvb_ops);
478 module_init(tm6000_dvb_register);
479 module_exit(tm6000_dvb_unregister);