2 DVB device driver for em28xx
4 (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
6 (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
7 - Fixes for the driver to properly work with HVR-950
8 - Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
9 - Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
11 (c) 2008 Aidan Thornton <makosoft@googlemail.com>
13 Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
14 (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
15 (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License.
22 #include <linux/kernel.h>
23 #include <linux/usb.h>
26 #include <media/v4l2-common.h>
27 #include <media/videobuf-vmalloc.h>
31 #ifdef EM28XX_DRX397XD_SUPPORT
35 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
36 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
37 MODULE_LICENSE("GPL");
39 static unsigned int debug
;
40 module_param(debug
, int, 0644);
41 MODULE_PARM_DESC(debug
, "enable debug messages [dvb]");
43 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr
);
45 #define dprintk(level, fmt, arg...) do { \
47 printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
50 #define EM28XX_DVB_NUM_BUFS 5
51 #define EM28XX_DVB_MAX_PACKETSIZE 564
52 #define EM28XX_DVB_MAX_PACKETS 64
55 struct dvb_frontend
*frontend
;
57 /* feed count management */
61 /* general boilerplate stuff */
62 struct dvb_adapter adapter
;
63 struct dvb_demux demux
;
65 struct dmx_frontend fe_hw
;
66 struct dmx_frontend fe_mem
;
71 static inline void print_err_status(struct em28xx
*dev
,
72 int packet
, int status
)
74 char *errmsg
= "Unknown";
78 errmsg
= "unlinked synchronuously";
81 errmsg
= "unlinked asynchronuously";
84 errmsg
= "Buffer error (overrun)";
87 errmsg
= "Stalled (device not responding)";
90 errmsg
= "Babble (bad cable?)";
93 errmsg
= "Bit-stuff error (bad cable?)";
96 errmsg
= "CRC/Timeout (could be anything)";
99 errmsg
= "Device does not respond";
103 dprintk(1, "URB status %d [%s].\n", status
, errmsg
);
105 dprintk(1, "URB packet %d, status %d [%s].\n",
106 packet
, status
, errmsg
);
110 static inline int dvb_isoc_copy(struct em28xx
*dev
, struct urb
*urb
)
117 if ((dev
->state
& DEV_DISCONNECTED
) || (dev
->state
& DEV_MISCONFIGURED
))
120 if (urb
->status
< 0) {
121 print_err_status(dev
, -1, urb
->status
);
122 if (urb
->status
== -ENOENT
)
126 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
127 int status
= urb
->iso_frame_desc
[i
].status
;
130 print_err_status(dev
, i
, status
);
131 if (urb
->iso_frame_desc
[i
].status
!= -EPROTO
)
135 dvb_dmx_swfilter(&dev
->dvb
->demux
, urb
->transfer_buffer
+
136 urb
->iso_frame_desc
[i
].offset
,
137 urb
->iso_frame_desc
[i
].actual_length
);
143 static int start_streaming(struct em28xx_dvb
*dvb
)
146 struct em28xx
*dev
= dvb
->adapter
.priv
;
148 usb_set_interface(dev
->udev
, 0, 1);
149 rc
= em28xx_set_mode(dev
, EM28XX_DIGITAL_MODE
);
153 return em28xx_init_isoc(dev
, EM28XX_DVB_MAX_PACKETS
,
154 EM28XX_DVB_NUM_BUFS
, EM28XX_DVB_MAX_PACKETSIZE
,
158 static int stop_streaming(struct em28xx_dvb
*dvb
)
160 struct em28xx
*dev
= dvb
->adapter
.priv
;
162 em28xx_uninit_isoc(dev
);
164 em28xx_set_mode(dev
, EM28XX_MODE_UNDEFINED
);
169 static int start_feed(struct dvb_demux_feed
*feed
)
171 struct dvb_demux
*demux
= feed
->demux
;
172 struct em28xx_dvb
*dvb
= demux
->priv
;
175 if (!demux
->dmx
.frontend
)
178 mutex_lock(&dvb
->lock
);
182 if (dvb
->nfeeds
== 1) {
183 ret
= start_streaming(dvb
);
188 mutex_unlock(&dvb
->lock
);
192 static int stop_feed(struct dvb_demux_feed
*feed
)
194 struct dvb_demux
*demux
= feed
->demux
;
195 struct em28xx_dvb
*dvb
= demux
->priv
;
198 mutex_lock(&dvb
->lock
);
201 if (0 == dvb
->nfeeds
)
202 err
= stop_streaming(dvb
);
204 mutex_unlock(&dvb
->lock
);
210 /* ------------------------------------------------------------------ */
211 static int em28xx_dvb_bus_ctrl(struct dvb_frontend
*fe
, int acquire
)
213 struct em28xx
*dev
= fe
->dvb
->priv
;
216 return em28xx_set_mode(dev
, EM28XX_DIGITAL_MODE
);
218 return em28xx_set_mode(dev
, EM28XX_MODE_UNDEFINED
);
221 /* ------------------------------------------------------------------ */
223 static struct lgdt330x_config em2880_lgdt3303_dev
= {
224 .demod_address
= 0x0e,
225 .demod_chip
= LGDT3303
,
228 static struct zl10353_config em28xx_zl10353_with_xc3028
= {
229 .demod_address
= (0x1e >> 1),
235 #ifdef EM28XX_DRX397XD_SUPPORT
236 /* [TODO] djh - not sure yet what the device config needs to contain */
237 static struct drx397xD_config em28xx_drx397xD_with_xc3028
= {
238 .demod_address
= (0xe0 >> 1),
242 /* ------------------------------------------------------------------ */
244 static int attach_xc3028(u8 addr
, struct em28xx
*dev
)
246 struct dvb_frontend
*fe
;
247 struct xc2028_config cfg
;
249 memset(&cfg
, 0, sizeof(cfg
));
250 cfg
.i2c_adap
= &dev
->i2c_adap
;
253 if (!dev
->dvb
->frontend
) {
254 printk(KERN_ERR
"%s/2: dvb frontend not attached. "
255 "Can't attach xc3028\n",
260 fe
= dvb_attach(xc2028_attach
, dev
->dvb
->frontend
, &cfg
);
262 printk(KERN_ERR
"%s/2: xc3028 attach failed\n",
264 dvb_frontend_detach(dev
->dvb
->frontend
);
265 dev
->dvb
->frontend
= NULL
;
269 printk(KERN_INFO
"%s/2: xc3028 attached\n", dev
->name
);
274 /* ------------------------------------------------------------------ */
276 static int register_dvb(struct em28xx_dvb
*dvb
,
277 struct module
*module
,
279 struct device
*device
)
283 mutex_init(&dvb
->lock
);
285 /* register adapter */
286 result
= dvb_register_adapter(&dvb
->adapter
, dev
->name
, module
, device
,
289 printk(KERN_WARNING
"%s: dvb_register_adapter failed (errno = %d)\n",
294 /* Ensure all frontends negotiate bus access */
295 dvb
->frontend
->ops
.ts_bus_ctrl
= em28xx_dvb_bus_ctrl
;
297 dvb
->adapter
.priv
= dev
;
299 /* register frontend */
300 result
= dvb_register_frontend(&dvb
->adapter
, dvb
->frontend
);
302 printk(KERN_WARNING
"%s: dvb_register_frontend failed (errno = %d)\n",
307 /* register demux stuff */
308 dvb
->demux
.dmx
.capabilities
=
309 DMX_TS_FILTERING
| DMX_SECTION_FILTERING
|
310 DMX_MEMORY_BASED_FILTERING
;
311 dvb
->demux
.priv
= dvb
;
312 dvb
->demux
.filternum
= 256;
313 dvb
->demux
.feednum
= 256;
314 dvb
->demux
.start_feed
= start_feed
;
315 dvb
->demux
.stop_feed
= stop_feed
;
317 result
= dvb_dmx_init(&dvb
->demux
);
319 printk(KERN_WARNING
"%s: dvb_dmx_init failed (errno = %d)\n",
324 dvb
->dmxdev
.filternum
= 256;
325 dvb
->dmxdev
.demux
= &dvb
->demux
.dmx
;
326 dvb
->dmxdev
.capabilities
= 0;
327 result
= dvb_dmxdev_init(&dvb
->dmxdev
, &dvb
->adapter
);
329 printk(KERN_WARNING
"%s: dvb_dmxdev_init failed (errno = %d)\n",
334 dvb
->fe_hw
.source
= DMX_FRONTEND_0
;
335 result
= dvb
->demux
.dmx
.add_frontend(&dvb
->demux
.dmx
, &dvb
->fe_hw
);
337 printk(KERN_WARNING
"%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
342 dvb
->fe_mem
.source
= DMX_MEMORY_FE
;
343 result
= dvb
->demux
.dmx
.add_frontend(&dvb
->demux
.dmx
, &dvb
->fe_mem
);
345 printk(KERN_WARNING
"%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
350 result
= dvb
->demux
.dmx
.connect_frontend(&dvb
->demux
.dmx
, &dvb
->fe_hw
);
352 printk(KERN_WARNING
"%s: connect_frontend failed (errno = %d)\n",
357 /* register network adapter */
358 dvb_net_init(&dvb
->adapter
, &dvb
->net
, &dvb
->demux
.dmx
);
362 dvb
->demux
.dmx
.remove_frontend(&dvb
->demux
.dmx
, &dvb
->fe_mem
);
364 dvb
->demux
.dmx
.remove_frontend(&dvb
->demux
.dmx
, &dvb
->fe_hw
);
366 dvb_dmxdev_release(&dvb
->dmxdev
);
368 dvb_dmx_release(&dvb
->demux
);
370 dvb_unregister_frontend(dvb
->frontend
);
372 dvb_frontend_detach(dvb
->frontend
);
373 dvb_unregister_adapter(&dvb
->adapter
);
378 static void unregister_dvb(struct em28xx_dvb
*dvb
)
380 dvb_net_release(&dvb
->net
);
381 dvb
->demux
.dmx
.remove_frontend(&dvb
->demux
.dmx
, &dvb
->fe_mem
);
382 dvb
->demux
.dmx
.remove_frontend(&dvb
->demux
.dmx
, &dvb
->fe_hw
);
383 dvb_dmxdev_release(&dvb
->dmxdev
);
384 dvb_dmx_release(&dvb
->demux
);
385 dvb_unregister_frontend(dvb
->frontend
);
386 dvb_frontend_detach(dvb
->frontend
);
387 dvb_unregister_adapter(&dvb
->adapter
);
391 static int dvb_init(struct em28xx
*dev
)
394 struct em28xx_dvb
*dvb
;
397 /* This device does not support the extension */
401 dvb
= kzalloc(sizeof(struct em28xx_dvb
), GFP_KERNEL
);
404 printk(KERN_INFO
"em28xx_dvb: memory allocation failed\n");
409 em28xx_set_mode(dev
, EM28XX_DIGITAL_MODE
);
411 switch (dev
->model
) {
412 case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950
:
413 case EM2880_BOARD_PINNACLE_PCTV_HD_PRO
:
414 case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600
:
415 dvb
->frontend
= dvb_attach(lgdt330x_attach
,
416 &em2880_lgdt3303_dev
,
418 if (attach_xc3028(0x61, dev
) < 0) {
423 case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900
:
424 case EM2880_BOARD_TERRATEC_HYBRID_XS
:
425 case EM2880_BOARD_KWORLD_DVB_310U
:
426 dvb
->frontend
= dvb_attach(zl10353_attach
,
427 &em28xx_zl10353_with_xc3028
,
429 if (attach_xc3028(0x61, dev
) < 0) {
434 case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2
:
435 #ifdef EM28XX_DRX397XD_SUPPORT
436 /* We don't have the config structure properly populated, so
437 this is commented out for now */
438 dvb
->frontend
= dvb_attach(drx397xD_attach
,
439 &em28xx_drx397xD_with_xc3028
,
441 if (attach_xc3028(0x61, dev
) < 0) {
448 printk(KERN_ERR
"%s/2: The frontend of your DVB/ATSC card"
449 " isn't supported yet\n",
453 if (NULL
== dvb
->frontend
) {
455 "%s/2: frontend initialization failed\n",
460 /* define general-purpose callback pointer */
461 dvb
->frontend
->callback
= em28xx_tuner_callback
;
463 /* register everything */
464 result
= register_dvb(dvb
, THIS_MODULE
, dev
, &dev
->udev
->dev
);
469 em28xx_set_mode(dev
, EM28XX_MODE_UNDEFINED
);
470 printk(KERN_INFO
"Successfully loaded em28xx-dvb\n");
474 em28xx_set_mode(dev
, EM28XX_MODE_UNDEFINED
);
480 static int dvb_fini(struct em28xx
*dev
)
483 /* This device does not support the extension */
488 unregister_dvb(dev
->dvb
);
495 static struct em28xx_ops dvb_ops
= {
497 .name
= "Em28xx dvb Extension",
502 static int __init
em28xx_dvb_register(void)
504 return em28xx_register_extension(&dvb_ops
);
507 static void __exit
em28xx_dvb_unregister(void)
509 em28xx_unregister_extension(&dvb_ops
);
512 module_init(em28xx_dvb_register
);
513 module_exit(em28xx_dvb_unregister
);