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 <mchehab@redhat.com>");
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;
93 print_err_status(dev, 0, urb->status);
94 else if (urb->actual_length > 0)
95 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
98 if (dev->dvb->streams > 0) {
99 ret = usb_submit_urb(urb, GFP_ATOMIC);
101 printk(KERN_ERR "tm6000: error %s\n", __FUNCTION__);
102 kfree(urb->transfer_buffer);
108 int tm6000_start_stream(struct tm6000_core *dev)
111 unsigned int pipe, size;
112 struct tm6000_dvb *dvb = dev->dvb;
114 printk(KERN_INFO "tm6000: got start stream request %s\n", __FUNCTION__);
116 if (dev->mode != TM6000_MODE_DIGITAL) {
117 tm6000_init_digital_mode(dev);
118 dev->mode = TM6000_MODE_DIGITAL;
121 dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
122 if (dvb->bulk_urb == NULL) {
123 printk(KERN_ERR "tm6000: couldn't allocate urb\n");
127 pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
128 & USB_ENDPOINT_NUMBER_MASK);
130 size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
131 size = size * 15; /* 512 x 8 or 12 or 15 */
133 dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
134 if (dvb->bulk_urb->transfer_buffer == NULL) {
135 usb_free_urb(dvb->bulk_urb);
136 printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n");
140 usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
141 dvb->bulk_urb->transfer_buffer,
143 tm6000_urb_received, dev);
145 ret = usb_clear_halt(dev->udev, pipe);
147 printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
151 printk(KERN_ERR "tm6000: pipe resetted\n");
153 /* mutex_lock(&tm6000_driver.open_close_mutex); */
154 ret = usb_submit_urb(dvb->bulk_urb, GFP_KERNEL);
156 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
158 printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",
161 kfree(dvb->bulk_urb->transfer_buffer);
162 usb_free_urb(dvb->bulk_urb);
169 void tm6000_stop_stream(struct tm6000_core *dev)
171 struct tm6000_dvb *dvb = dev->dvb;
174 printk(KERN_INFO "urb killing\n");
175 usb_kill_urb(dvb->bulk_urb);
176 printk(KERN_INFO "urb buffer free\n");
177 kfree(dvb->bulk_urb->transfer_buffer);
178 usb_free_urb(dvb->bulk_urb);
179 dvb->bulk_urb = NULL;
183 int tm6000_start_feed(struct dvb_demux_feed *feed)
185 struct dvb_demux *demux = feed->demux;
186 struct tm6000_core *dev = demux->priv;
187 struct tm6000_dvb *dvb = dev->dvb;
188 printk(KERN_INFO "tm6000: got start feed request %s\n", __FUNCTION__);
190 mutex_lock(&dvb->mutex);
191 if (dvb->streams == 0) {
193 /* mutex_init(&tm6000_dev->streming_mutex); */
194 tm6000_start_stream(dev);
197 mutex_unlock(&dvb->mutex);
202 int tm6000_stop_feed(struct dvb_demux_feed *feed)
204 struct dvb_demux *demux = feed->demux;
205 struct tm6000_core *dev = demux->priv;
206 struct tm6000_dvb *dvb = dev->dvb;
208 printk(KERN_INFO "tm6000: got stop feed request %s\n", __FUNCTION__);
210 mutex_lock(&dvb->mutex);
212 printk(KERN_INFO "stream %#x\n", dvb->streams);
214 if (dvb->streams == 0) {
215 printk(KERN_INFO "stop stream\n");
216 tm6000_stop_stream(dev);
217 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
219 mutex_unlock(&dvb->mutex);
220 /* mutex_destroy(&tm6000_dev->streaming_mutex); */
225 int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
227 struct tm6000_dvb *dvb = dev->dvb;
229 if (dev->caps.has_zl10353) {
230 struct zl10353_config config = {
231 .demod_address = dev->demod_addr,
235 .disable_i2c_gate_ctrl = 1,
238 dvb->frontend = dvb_attach(zl10353_attach, &config,
241 printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
245 return (!dvb->frontend) ? -1 : 0;
248 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
250 int register_dvb(struct tm6000_core *dev)
253 struct tm6000_dvb *dvb = dev->dvb;
255 mutex_init(&dvb->mutex);
259 /* attach the frontend */
260 ret = tm6000_dvb_attach_frontend(dev);
262 printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
266 ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
267 THIS_MODULE, &dev->udev->dev, adapter_nr);
268 dvb->adapter.priv = dev;
271 switch (dev->tuner_type) {
273 struct xc2028_config cfg = {
274 .i2c_adap = &dev->i2c_adap,
275 .i2c_addr = dev->tuner_addr,
278 dvb->frontend->callback = tm6000_tuner_callback;
279 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
282 "tm6000: couldn't register frontend\n");
286 if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
287 printk(KERN_ERR "tm6000: couldn't register "
288 "frontend (xc3028)\n");
292 printk(KERN_INFO "tm6000: XC2028/3028 asked to be "
293 "attached to frontend!\n");
297 struct xc5000_config cfg = {
298 .i2c_address = dev->tuner_addr,
301 dvb->frontend->callback = tm6000_xc5000_callback;
302 ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
305 "tm6000: couldn't register frontend\n");
309 if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) {
310 printk(KERN_ERR "tm6000: couldn't register "
311 "frontend (xc5000)\n");
315 printk(KERN_INFO "tm6000: XC5000 asked to be "
316 "attached to frontend!\n");
321 printk(KERN_ERR "tm6000: no frontend found\n");
323 dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
324 | DMX_MEMORY_BASED_FILTERING;
325 dvb->demux.priv = dev;
326 dvb->demux.filternum = 8;
327 dvb->demux.feednum = 8;
328 dvb->demux.start_feed = tm6000_start_feed;
329 dvb->demux.stop_feed = tm6000_stop_feed;
330 dvb->demux.write_to_decoder = NULL;
331 ret = dvb_dmx_init(&dvb->demux);
333 printk("tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
337 dvb->dmxdev.filternum = dev->dvb->demux.filternum;
338 dvb->dmxdev.demux = &dev->dvb->demux.dmx;
339 dvb->dmxdev.capabilities = 0;
341 ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
343 printk("tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
350 dvb_dmx_release(&dvb->demux);
353 dvb_frontend_detach(dvb->frontend);
354 dvb_unregister_frontend(dvb->frontend);
357 dvb_unregister_adapter(&dvb->adapter);
362 void unregister_dvb(struct tm6000_core *dev)
364 struct tm6000_dvb *dvb = dev->dvb;
366 if (dvb->bulk_urb != NULL) {
367 struct urb *bulk_urb = dvb->bulk_urb;
369 kfree(bulk_urb->transfer_buffer);
370 bulk_urb->transfer_buffer = NULL;
371 usb_unlink_urb(bulk_urb);
372 usb_free_urb(bulk_urb);
375 /* mutex_lock(&tm6000_driver.open_close_mutex); */
377 dvb_frontend_detach(dvb->frontend);
378 dvb_unregister_frontend(dvb->frontend);
381 dvb_dmxdev_release(&dvb->dmxdev);
382 dvb_dmx_release(&dvb->demux);
383 dvb_unregister_adapter(&dvb->adapter);
384 mutex_destroy(&dvb->mutex);
385 /* mutex_unlock(&tm6000_driver.open_close_mutex); */
388 static int dvb_init(struct tm6000_core *dev)
390 struct tm6000_dvb *dvb;
396 if (!dev->caps.has_dvb)
399 dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL);
401 printk(KERN_INFO "Cannot allocate memory\n");
407 rc = register_dvb(dev);
417 static int dvb_fini(struct tm6000_core *dev)
422 if (!dev->caps.has_dvb)
434 static struct tm6000_ops dvb_ops = {
436 .name = "TM6000 dvb Extension",
441 static int __init tm6000_dvb_register(void)
443 return tm6000_register_extension(&dvb_ops);
446 static void __exit tm6000_dvb_unregister(void)
448 tm6000_unregister_extension(&dvb_ops);
451 module_init(tm6000_dvb_register);
452 module_exit(tm6000_dvb_unregister);