2 DVB device driver for cx231xx
4 Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/kernel.h>
23 #include <linux/slab.h>
24 #include <linux/usb.h>
27 #include <media/v4l2-common.h>
28 #include <media/videobuf-vmalloc.h>
31 #include "dvb_dummy_fe.h"
33 MODULE_DESCRIPTION("driver for cx231xx based DVB cards");
34 MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>");
35 MODULE_LICENSE("GPL");
37 static unsigned int debug;
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
41 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
43 #define dprintk(level, fmt, arg...) do { \
45 printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
48 #define CX231XX_DVB_NUM_BUFS 5
49 #define CX231XX_DVB_MAX_PACKETSIZE 564
50 #define CX231XX_DVB_MAX_PACKETS 64
53 struct dvb_frontend *frontend;
55 /* feed count management */
59 /* general boilerplate stuff */
60 struct dvb_adapter adapter;
61 struct dvb_demux demux;
63 struct dmx_frontend fe_hw;
64 struct dmx_frontend fe_mem;
68 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
70 char *errmsg = "Unknown";
74 errmsg = "unlinked synchronuously";
77 errmsg = "unlinked asynchronuously";
80 errmsg = "Buffer error (overrun)";
83 errmsg = "Stalled (device not responding)";
86 errmsg = "Babble (bad cable?)";
89 errmsg = "Bit-stuff error (bad cable?)";
92 errmsg = "CRC/Timeout (could be anything)";
95 errmsg = "Device does not respond";
99 dprintk(1, "URB status %d [%s].\n", status, errmsg);
101 dprintk(1, "URB packet %d, status %d [%s].\n",
102 packet, status, errmsg);
106 static inline int dvb_isoc_copy(struct cx231xx *dev, struct urb *urb)
113 if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
116 if (urb->status < 0) {
117 print_err_status(dev, -1, urb->status);
118 if (urb->status == -ENOENT)
122 for (i = 0; i < urb->number_of_packets; i++) {
123 int status = urb->iso_frame_desc[i].status;
126 print_err_status(dev, i, status);
127 if (urb->iso_frame_desc[i].status != -EPROTO)
131 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
132 urb->iso_frame_desc[i].offset,
133 urb->iso_frame_desc[i].actual_length);
139 static int start_streaming(struct cx231xx_dvb *dvb)
142 struct cx231xx *dev = dvb->adapter.priv;
144 usb_set_interface(dev->udev, 0, 1);
145 rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
149 return cx231xx_init_isoc(dev, CX231XX_DVB_MAX_PACKETS,
150 CX231XX_DVB_NUM_BUFS,
151 CX231XX_DVB_MAX_PACKETSIZE, dvb_isoc_copy);
154 static int stop_streaming(struct cx231xx_dvb *dvb)
156 struct cx231xx *dev = dvb->adapter.priv;
158 cx231xx_uninit_isoc(dev);
160 cx231xx_set_mode(dev, CX231XX_SUSPEND);
165 static int start_feed(struct dvb_demux_feed *feed)
167 struct dvb_demux *demux = feed->demux;
168 struct cx231xx_dvb *dvb = demux->priv;
171 if (!demux->dmx.frontend)
174 mutex_lock(&dvb->lock);
178 if (dvb->nfeeds == 1) {
179 ret = start_streaming(dvb);
184 mutex_unlock(&dvb->lock);
188 static int stop_feed(struct dvb_demux_feed *feed)
190 struct dvb_demux *demux = feed->demux;
191 struct cx231xx_dvb *dvb = demux->priv;
194 mutex_lock(&dvb->lock);
197 if (0 == dvb->nfeeds)
198 err = stop_streaming(dvb);
200 mutex_unlock(&dvb->lock);
204 /* ------------------------------------------------------------------ */
205 static int cx231xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
207 struct cx231xx *dev = fe->dvb->priv;
210 return cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
212 return cx231xx_set_mode(dev, CX231XX_SUSPEND);
215 /* ------------------------------------------------------------------ */
217 static struct xc5000_config cnxt_rde250_tunerconfig = {
222 /* ------------------------------------------------------------------ */
224 static int attach_xc5000(u8 addr, struct cx231xx *dev)
227 struct dvb_frontend *fe;
228 struct xc5000_config cfg;
230 memset(&cfg, 0, sizeof(cfg));
231 cfg.i2c_adap = &dev->i2c_bus[1].i2c_adap;
234 if (!dev->dvb->frontend) {
235 printk(KERN_ERR "%s/2: dvb frontend not attached. "
236 "Can't attach xc5000\n", dev->name);
240 fe = dvb_attach(xc5000_attach, dev->dvb->frontend, &cfg);
242 printk(KERN_ERR "%s/2: xc5000 attach failed\n", dev->name);
243 dvb_frontend_detach(dev->dvb->frontend);
244 dev->dvb->frontend = NULL;
248 printk(KERN_INFO "%s/2: xc5000 attached\n", dev->name);
254 int cx231xx_set_analog_freq(struct cx231xx *dev, u32 freq)
258 if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) {
260 struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops;
262 if (dops->set_analog_params != NULL) {
263 struct analog_parameters params;
265 params.frequency = freq;
266 params.std = dev->norm;
267 params.mode = 0; /* 0- Air; 1 - cable */
268 /*params.audmode = ; */
270 /* Set the analog parameters to set the frequency */
271 cx231xx_info("Setting Frequency for XC5000\n");
272 dops->set_analog_params(dev->dvb->frontend, ¶ms);
280 int cx231xx_reset_analog_tuner(struct cx231xx *dev)
284 if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) {
286 struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops;
288 if (dops->init != NULL && !dev->xc_fw_load_done) {
290 cx231xx_info("Reloading firmware for XC5000\n");
291 status = dops->init(dev->dvb->frontend);
293 dev->xc_fw_load_done = 1;
295 ("XC5000 firmware download completed\n");
297 dev->xc_fw_load_done = 0;
299 ("XC5000 firmware download failed !!!\n");
308 /* ------------------------------------------------------------------ */
310 static int register_dvb(struct cx231xx_dvb *dvb,
311 struct module *module,
312 struct cx231xx *dev, struct device *device)
316 mutex_init(&dvb->lock);
318 /* register adapter */
319 result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
323 "%s: dvb_register_adapter failed (errno = %d)\n",
328 /* Ensure all frontends negotiate bus access */
329 dvb->frontend->ops.ts_bus_ctrl = cx231xx_dvb_bus_ctrl;
331 dvb->adapter.priv = dev;
333 /* register frontend */
334 result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
337 "%s: dvb_register_frontend failed (errno = %d)\n",
342 /* register demux stuff */
343 dvb->demux.dmx.capabilities =
344 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
345 DMX_MEMORY_BASED_FILTERING;
346 dvb->demux.priv = dvb;
347 dvb->demux.filternum = 256;
348 dvb->demux.feednum = 256;
349 dvb->demux.start_feed = start_feed;
350 dvb->demux.stop_feed = stop_feed;
352 result = dvb_dmx_init(&dvb->demux);
354 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
359 dvb->dmxdev.filternum = 256;
360 dvb->dmxdev.demux = &dvb->demux.dmx;
361 dvb->dmxdev.capabilities = 0;
362 result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
364 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
369 dvb->fe_hw.source = DMX_FRONTEND_0;
370 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
373 "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
378 dvb->fe_mem.source = DMX_MEMORY_FE;
379 result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
382 "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
387 result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
390 "%s: connect_frontend failed (errno = %d)\n", dev->name,
395 /* register network adapter */
396 dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
400 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
402 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
404 dvb_dmxdev_release(&dvb->dmxdev);
406 dvb_dmx_release(&dvb->demux);
408 dvb_unregister_frontend(dvb->frontend);
410 dvb_frontend_detach(dvb->frontend);
411 dvb_unregister_adapter(&dvb->adapter);
416 static void unregister_dvb(struct cx231xx_dvb *dvb)
418 dvb_net_release(&dvb->net);
419 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
420 dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
421 dvb_dmxdev_release(&dvb->dmxdev);
422 dvb_dmx_release(&dvb->demux);
423 dvb_unregister_frontend(dvb->frontend);
424 dvb_frontend_detach(dvb->frontend);
425 dvb_unregister_adapter(&dvb->adapter);
428 static int dvb_init(struct cx231xx *dev)
431 struct cx231xx_dvb *dvb;
433 if (!dev->board.has_dvb) {
434 /* This device does not support the extension */
438 dvb = kzalloc(sizeof(struct cx231xx_dvb), GFP_KERNEL);
441 printk(KERN_INFO "cx231xx_dvb: memory allocation failed\n");
445 dev->cx231xx_set_analog_freq = cx231xx_set_analog_freq;
446 dev->cx231xx_reset_analog_tuner = cx231xx_reset_analog_tuner;
448 cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
450 switch (dev->model) {
451 case CX231XX_BOARD_CNXT_RDE_250:
453 /* dev->dvb->frontend = dvb_attach(s5h1411_attach,
454 &dvico_s5h1411_config,
455 &dev->i2c_bus[1].i2c_adap); */
456 dev->dvb->frontend = dvb_attach(dvb_dummy_fe_ofdm_attach);
458 if (dev->dvb->frontend == NULL) {
460 ": Failed to attach dummy front end\n");
465 /* define general-purpose callback pointer */
466 dvb->frontend->callback = cx231xx_tuner_callback;
468 if (!dvb_attach(xc5000_attach, dev->dvb->frontend,
469 &dev->i2c_bus[1].i2c_adap,
470 &cnxt_rde250_tunerconfig)) {
476 case CX231XX_BOARD_CNXT_RDU_250:
478 dev->dvb->frontend = dvb_attach(dvb_dummy_fe_ofdm_attach);
480 if (dev->dvb->frontend == NULL) {
482 ": Failed to attach dummy front end\n");
487 /* define general-purpose callback pointer */
488 dvb->frontend->callback = cx231xx_tuner_callback;
490 if (!dvb_attach(xc5000_attach, dev->dvb->frontend,
491 &dev->i2c_bus[1].i2c_adap,
492 &cnxt_rde250_tunerconfig)) {
499 printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
500 " isn't supported yet\n", dev->name);
503 if (NULL == dvb->frontend) {
505 "%s/2: frontend initialization failed\n", dev->name);
510 /* register everything */
511 result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
516 cx231xx_set_mode(dev, CX231XX_SUSPEND);
517 printk(KERN_INFO "Successfully loaded cx231xx-dvb\n");
521 cx231xx_set_mode(dev, CX231XX_SUSPEND);
527 static int dvb_fini(struct cx231xx *dev)
529 if (!dev->board.has_dvb) {
530 /* This device does not support the extension */
535 unregister_dvb(dev->dvb);
542 static struct cx231xx_ops dvb_ops = {
544 .name = "Cx231xx dvb Extension",
549 static int __init cx231xx_dvb_register(void)
551 return cx231xx_register_extension(&dvb_ops);
554 static void __exit cx231xx_dvb_unregister(void)
556 cx231xx_unregister_extension(&dvb_ops);
559 module_init(cx231xx_dvb_register);
560 module_exit(cx231xx_dvb_unregister);