V4L/DVB (9795): Add Compro VideoMate E650F (DVB-T part only).
[linux-2.6.git] / drivers / media / video / cx23885 / cx23885-dvb.c
1 /*
2  *  Driver for the Conexant CX23885 PCIe bridge
3  *
4  *  Copyright (c) 2006 Steven Toth <stoth@linuxtv.org>
5  *
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; either version 2 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *
15  *  GNU General Public License for more details.
16  *
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.
20  */
21
22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/device.h>
25 #include <linux/fs.h>
26 #include <linux/kthread.h>
27 #include <linux/file.h>
28 #include <linux/suspend.h>
29
30 #include "cx23885.h"
31 #include <media/v4l2-common.h>
32
33 #include "s5h1409.h"
34 #include "s5h1411.h"
35 #include "mt2131.h"
36 #include "tda8290.h"
37 #include "tda18271.h"
38 #include "lgdt330x.h"
39 #include "xc5000.h"
40 #include "tda10048.h"
41 #include "tuner-xc2028.h"
42 #include "tuner-simple.h"
43 #include "dib7000p.h"
44 #include "dibx000_common.h"
45 #include "zl10353.h"
46
47 static unsigned int debug;
48
49 #define dprintk(level, fmt, arg...)\
50         do { if (debug >= level)\
51                 printk(KERN_DEBUG "%s/0: " fmt, dev->name, ## arg);\
52         } while (0)
53
54 /* ------------------------------------------------------------------ */
55
56 static unsigned int alt_tuner;
57 module_param(alt_tuner, int, 0644);
58 MODULE_PARM_DESC(alt_tuner, "Enable alternate tuner configuration");
59
60 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
61
62 /* ------------------------------------------------------------------ */
63
64 static int dvb_buf_setup(struct videobuf_queue *q,
65                          unsigned int *count, unsigned int *size)
66 {
67         struct cx23885_tsport *port = q->priv_data;
68
69         port->ts_packet_size  = 188 * 4;
70         port->ts_packet_count = 32;
71
72         *size  = port->ts_packet_size * port->ts_packet_count;
73         *count = 32;
74         return 0;
75 }
76
77 static int dvb_buf_prepare(struct videobuf_queue *q,
78                            struct videobuf_buffer *vb, enum v4l2_field field)
79 {
80         struct cx23885_tsport *port = q->priv_data;
81         return cx23885_buf_prepare(q, port, (struct cx23885_buffer *)vb, field);
82 }
83
84 static void dvb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
85 {
86         struct cx23885_tsport *port = q->priv_data;
87         cx23885_buf_queue(port, (struct cx23885_buffer *)vb);
88 }
89
90 static void dvb_buf_release(struct videobuf_queue *q,
91                             struct videobuf_buffer *vb)
92 {
93         cx23885_free_buffer(q, (struct cx23885_buffer *)vb);
94 }
95
96 static struct videobuf_queue_ops dvb_qops = {
97         .buf_setup    = dvb_buf_setup,
98         .buf_prepare  = dvb_buf_prepare,
99         .buf_queue    = dvb_buf_queue,
100         .buf_release  = dvb_buf_release,
101 };
102
103 static struct s5h1409_config hauppauge_generic_config = {
104         .demod_address = 0x32 >> 1,
105         .output_mode   = S5H1409_SERIAL_OUTPUT,
106         .gpio          = S5H1409_GPIO_ON,
107         .qam_if        = 44000,
108         .inversion     = S5H1409_INVERSION_OFF,
109         .status_mode   = S5H1409_DEMODLOCKING,
110         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
111 };
112
113 static struct tda10048_config hauppauge_hvr1200_config = {
114         .demod_address    = 0x10 >> 1,
115         .output_mode      = TDA10048_SERIAL_OUTPUT,
116         .fwbulkwritelen   = TDA10048_BULKWRITE_200,
117         .inversion        = TDA10048_INVERSION_ON
118 };
119
120 static struct s5h1409_config hauppauge_ezqam_config = {
121         .demod_address = 0x32 >> 1,
122         .output_mode   = S5H1409_SERIAL_OUTPUT,
123         .gpio          = S5H1409_GPIO_OFF,
124         .qam_if        = 4000,
125         .inversion     = S5H1409_INVERSION_ON,
126         .status_mode   = S5H1409_DEMODLOCKING,
127         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
128 };
129
130 static struct s5h1409_config hauppauge_hvr1800lp_config = {
131         .demod_address = 0x32 >> 1,
132         .output_mode   = S5H1409_SERIAL_OUTPUT,
133         .gpio          = S5H1409_GPIO_OFF,
134         .qam_if        = 44000,
135         .inversion     = S5H1409_INVERSION_OFF,
136         .status_mode   = S5H1409_DEMODLOCKING,
137         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
138 };
139
140 static struct s5h1409_config hauppauge_hvr1500_config = {
141         .demod_address = 0x32 >> 1,
142         .output_mode   = S5H1409_SERIAL_OUTPUT,
143         .gpio          = S5H1409_GPIO_OFF,
144         .inversion     = S5H1409_INVERSION_OFF,
145         .status_mode   = S5H1409_DEMODLOCKING,
146         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
147 };
148
149 static struct mt2131_config hauppauge_generic_tunerconfig = {
150         0x61
151 };
152
153 static struct lgdt330x_config fusionhdtv_5_express = {
154         .demod_address = 0x0e,
155         .demod_chip = LGDT3303,
156         .serial_mpeg = 0x40,
157 };
158
159 static struct s5h1409_config hauppauge_hvr1500q_config = {
160         .demod_address = 0x32 >> 1,
161         .output_mode   = S5H1409_SERIAL_OUTPUT,
162         .gpio          = S5H1409_GPIO_ON,
163         .qam_if        = 44000,
164         .inversion     = S5H1409_INVERSION_OFF,
165         .status_mode   = S5H1409_DEMODLOCKING,
166         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
167 };
168
169 static struct s5h1409_config dvico_s5h1409_config = {
170         .demod_address = 0x32 >> 1,
171         .output_mode   = S5H1409_SERIAL_OUTPUT,
172         .gpio          = S5H1409_GPIO_ON,
173         .qam_if        = 44000,
174         .inversion     = S5H1409_INVERSION_OFF,
175         .status_mode   = S5H1409_DEMODLOCKING,
176         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
177 };
178
179 static struct s5h1411_config dvico_s5h1411_config = {
180         .output_mode   = S5H1411_SERIAL_OUTPUT,
181         .gpio          = S5H1411_GPIO_ON,
182         .qam_if        = S5H1411_IF_44000,
183         .vsb_if        = S5H1411_IF_44000,
184         .inversion     = S5H1411_INVERSION_OFF,
185         .status_mode   = S5H1411_DEMODLOCKING,
186         .mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
187 };
188
189 static struct xc5000_config hauppauge_hvr1500q_tunerconfig = {
190         .i2c_address      = 0x61,
191         .if_khz           = 5380,
192 };
193
194 static struct xc5000_config dvico_xc5000_tunerconfig = {
195         .i2c_address      = 0x64,
196         .if_khz           = 5380,
197 };
198
199 static struct tda829x_config tda829x_no_probe = {
200         .probe_tuner = TDA829X_DONT_PROBE,
201 };
202
203 static struct tda18271_std_map hauppauge_tda18271_std_map = {
204         .atsc_6   = { .if_freq = 5380, .agc_mode = 3, .std = 3,
205                       .if_lvl = 6, .rfagc_top = 0x37 },
206         .qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 0,
207                       .if_lvl = 6, .rfagc_top = 0x37 },
208 };
209
210 static struct tda18271_config hauppauge_tda18271_config = {
211         .std_map = &hauppauge_tda18271_std_map,
212         .gate    = TDA18271_GATE_ANALOG,
213 };
214
215 static struct tda18271_config hauppauge_hvr1200_tuner_config = {
216         .gate    = TDA18271_GATE_ANALOG,
217 };
218
219 static struct dibx000_agc_config xc3028_agc_config = {
220         BAND_VHF | BAND_UHF,    /* band_caps */
221
222         /* P_agc_use_sd_mod1=0, P_agc_use_sd_mod2=0, P_agc_freq_pwm_div=0,
223          * P_agc_inv_pwm1=0, P_agc_inv_pwm2=0,
224          * P_agc_inh_dc_rv_est=0, P_agc_time_est=3, P_agc_freeze=0,
225          * P_agc_nb_est=2, P_agc_write=0
226          */
227         (0 << 15) | (0 << 14) | (0 << 11) | (0 << 10) | (0 << 9) | (0 << 8) |
228                 (3 << 5) | (0 << 4) | (2 << 1) | (0 << 0), /* setup */
229
230         712,    /* inv_gain */
231         21,     /* time_stabiliz */
232
233         0,      /* alpha_level */
234         118,    /* thlock */
235
236         0,      /* wbd_inv */
237         2867,   /* wbd_ref */
238         0,      /* wbd_sel */
239         2,      /* wbd_alpha */
240
241         0,      /* agc1_max */
242         0,      /* agc1_min */
243         39718,  /* agc2_max */
244         9930,   /* agc2_min */
245         0,      /* agc1_pt1 */
246         0,      /* agc1_pt2 */
247         0,      /* agc1_pt3 */
248         0,      /* agc1_slope1 */
249         0,      /* agc1_slope2 */
250         0,      /* agc2_pt1 */
251         128,    /* agc2_pt2 */
252         29,     /* agc2_slope1 */
253         29,     /* agc2_slope2 */
254
255         17,     /* alpha_mant */
256         27,     /* alpha_exp */
257         23,     /* beta_mant */
258         51,     /* beta_exp */
259
260         1,      /* perform_agc_softsplit */
261 };
262
263 /* PLL Configuration for COFDM BW_MHz = 8.000000
264  * With external clock = 30.000000 */
265 static struct dibx000_bandwidth_config xc3028_bw_config = {
266         60000,  /* internal */
267         30000,  /* sampling */
268         1,      /* pll_cfg: prediv */
269         8,      /* pll_cfg: ratio */
270         3,      /* pll_cfg: range */
271         1,      /* pll_cfg: reset */
272         0,      /* pll_cfg: bypass */
273         0,      /* misc: refdiv */
274         0,      /* misc: bypclk_div */
275         1,      /* misc: IO_CLK_en_core */
276         1,      /* misc: ADClkSrc */
277         0,      /* misc: modulo */
278         (3 << 14) | (1 << 12) | (524 << 0), /* sad_cfg: refsel, sel, freq_15k */
279         (1 << 25) | 5816102, /* ifreq = 5.200000 MHz */
280         20452225, /* timf */
281         30000000  /* xtal_hz */
282 };
283
284 static struct dib7000p_config hauppauge_hvr1400_dib7000_config = {
285         .output_mpeg2_in_188_bytes = 1,
286         .hostbus_diversity = 1,
287         .tuner_is_baseband = 0,
288         .update_lna  = NULL,
289
290         .agc_config_count = 1,
291         .agc = &xc3028_agc_config,
292         .bw  = &xc3028_bw_config,
293
294         .gpio_dir = DIB7000P_GPIO_DEFAULT_DIRECTIONS,
295         .gpio_val = DIB7000P_GPIO_DEFAULT_VALUES,
296         .gpio_pwm_pos = DIB7000P_GPIO_DEFAULT_PWM_POS,
297
298         .pwm_freq_div = 0,
299         .agc_control  = NULL,
300         .spur_protect = 0,
301
302         .output_mode = OUTMODE_MPEG2_SERIAL,
303 };
304
305 static struct zl10353_config dvico_fusionhdtv_xc3028 = {
306         .demod_address = 0x0f,
307         .if2           = 45600,
308         .no_tuner      = 1,
309 };
310
311 static int dvb_register(struct cx23885_tsport *port)
312 {
313         struct cx23885_dev *dev = port->dev;
314         struct cx23885_i2c *i2c_bus = NULL;
315         struct videobuf_dvb_frontend *fe0;
316
317         /* Get the first frontend */
318         fe0 = videobuf_dvb_get_frontend(&port->frontends, 1);
319         if (!fe0)
320                 return -EINVAL;
321
322         /* init struct videobuf_dvb */
323         fe0->dvb.name = dev->name;
324
325         /* init frontend */
326         switch (dev->board) {
327         case CX23885_BOARD_HAUPPAUGE_HVR1250:
328                 i2c_bus = &dev->i2c_bus[0];
329                 fe0->dvb.frontend = dvb_attach(s5h1409_attach,
330                                                 &hauppauge_generic_config,
331                                                 &i2c_bus->i2c_adap);
332                 if (fe0->dvb.frontend != NULL) {
333                         dvb_attach(mt2131_attach, fe0->dvb.frontend,
334                                    &i2c_bus->i2c_adap,
335                                    &hauppauge_generic_tunerconfig, 0);
336                 }
337                 break;
338         case CX23885_BOARD_HAUPPAUGE_HVR1800:
339                 i2c_bus = &dev->i2c_bus[0];
340                 switch (alt_tuner) {
341                 case 1:
342                         fe0->dvb.frontend =
343                                 dvb_attach(s5h1409_attach,
344                                            &hauppauge_ezqam_config,
345                                            &i2c_bus->i2c_adap);
346                         if (fe0->dvb.frontend != NULL) {
347                                 dvb_attach(tda829x_attach, fe0->dvb.frontend,
348                                            &dev->i2c_bus[1].i2c_adap, 0x42,
349                                            &tda829x_no_probe);
350                                 dvb_attach(tda18271_attach, fe0->dvb.frontend,
351                                            0x60, &dev->i2c_bus[1].i2c_adap,
352                                            &hauppauge_tda18271_config);
353                         }
354                         break;
355                 case 0:
356                 default:
357                         fe0->dvb.frontend =
358                                 dvb_attach(s5h1409_attach,
359                                            &hauppauge_generic_config,
360                                            &i2c_bus->i2c_adap);
361                         if (fe0->dvb.frontend != NULL)
362                                 dvb_attach(mt2131_attach, fe0->dvb.frontend,
363                                            &i2c_bus->i2c_adap,
364                                            &hauppauge_generic_tunerconfig, 0);
365                         break;
366                 }
367                 break;
368         case CX23885_BOARD_HAUPPAUGE_HVR1800lp:
369                 i2c_bus = &dev->i2c_bus[0];
370                 fe0->dvb.frontend = dvb_attach(s5h1409_attach,
371                                                 &hauppauge_hvr1800lp_config,
372                                                 &i2c_bus->i2c_adap);
373                 if (fe0->dvb.frontend != NULL) {
374                         dvb_attach(mt2131_attach, fe0->dvb.frontend,
375                                    &i2c_bus->i2c_adap,
376                                    &hauppauge_generic_tunerconfig, 0);
377                 }
378                 break;
379         case CX23885_BOARD_DVICO_FUSIONHDTV_5_EXP:
380                 i2c_bus = &dev->i2c_bus[0];
381                 fe0->dvb.frontend = dvb_attach(lgdt330x_attach,
382                                                 &fusionhdtv_5_express,
383                                                 &i2c_bus->i2c_adap);
384                 if (fe0->dvb.frontend != NULL) {
385                         dvb_attach(simple_tuner_attach, fe0->dvb.frontend,
386                                    &i2c_bus->i2c_adap, 0x61,
387                                    TUNER_LG_TDVS_H06XF);
388                 }
389                 break;
390         case CX23885_BOARD_HAUPPAUGE_HVR1500Q:
391                 i2c_bus = &dev->i2c_bus[1];
392                 fe0->dvb.frontend = dvb_attach(s5h1409_attach,
393                                                 &hauppauge_hvr1500q_config,
394                                                 &dev->i2c_bus[0].i2c_adap);
395                 if (fe0->dvb.frontend != NULL)
396                         dvb_attach(xc5000_attach, fe0->dvb.frontend,
397                                    &i2c_bus->i2c_adap,
398                                    &hauppauge_hvr1500q_tunerconfig);
399                 break;
400         case CX23885_BOARD_HAUPPAUGE_HVR1500:
401                 i2c_bus = &dev->i2c_bus[1];
402                 fe0->dvb.frontend = dvb_attach(s5h1409_attach,
403                                                 &hauppauge_hvr1500_config,
404                                                 &dev->i2c_bus[0].i2c_adap);
405                 if (fe0->dvb.frontend != NULL) {
406                         struct dvb_frontend *fe;
407                         struct xc2028_config cfg = {
408                                 .i2c_adap  = &i2c_bus->i2c_adap,
409                                 .i2c_addr  = 0x61,
410                         };
411                         static struct xc2028_ctrl ctl = {
412                                 .fname       = XC2028_DEFAULT_FIRMWARE,
413                                 .max_len     = 64,
414                                 .scode_table = XC3028_FE_OREN538,
415                         };
416
417                         fe = dvb_attach(xc2028_attach,
418                                         fe0->dvb.frontend, &cfg);
419                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
420                                 fe->ops.tuner_ops.set_config(fe, &ctl);
421                 }
422                 break;
423         case CX23885_BOARD_HAUPPAUGE_HVR1200:
424         case CX23885_BOARD_HAUPPAUGE_HVR1700:
425                 i2c_bus = &dev->i2c_bus[0];
426                 fe0->dvb.frontend = dvb_attach(tda10048_attach,
427                         &hauppauge_hvr1200_config,
428                         &i2c_bus->i2c_adap);
429                 if (fe0->dvb.frontend != NULL) {
430                         dvb_attach(tda829x_attach, fe0->dvb.frontend,
431                                 &dev->i2c_bus[1].i2c_adap, 0x42,
432                                 &tda829x_no_probe);
433                         dvb_attach(tda18271_attach, fe0->dvb.frontend,
434                                 0x60, &dev->i2c_bus[1].i2c_adap,
435                                 &hauppauge_hvr1200_tuner_config);
436                 }
437                 break;
438         case CX23885_BOARD_HAUPPAUGE_HVR1400:
439                 i2c_bus = &dev->i2c_bus[0];
440                 fe0->dvb.frontend = dvb_attach(dib7000p_attach,
441                         &i2c_bus->i2c_adap,
442                         0x12, &hauppauge_hvr1400_dib7000_config);
443                 if (fe0->dvb.frontend != NULL) {
444                         struct dvb_frontend *fe;
445                         struct xc2028_config cfg = {
446                                 .i2c_adap  = &dev->i2c_bus[1].i2c_adap,
447                                 .i2c_addr  = 0x64,
448                         };
449                         static struct xc2028_ctrl ctl = {
450                                 .fname   = XC3028L_DEFAULT_FIRMWARE,
451                                 .max_len = 64,
452                                 .demod   = 5000,
453                                 /* This is true for all demods with
454                                         v36 firmware? */
455                                 .type    = XC2028_D2633,
456                         };
457
458                         fe = dvb_attach(xc2028_attach,
459                                         fe0->dvb.frontend, &cfg);
460                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
461                                 fe->ops.tuner_ops.set_config(fe, &ctl);
462                 }
463                 break;
464         case CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP:
465                 i2c_bus = &dev->i2c_bus[port->nr - 1];
466
467                 fe0->dvb.frontend = dvb_attach(s5h1409_attach,
468                                                 &dvico_s5h1409_config,
469                                                 &i2c_bus->i2c_adap);
470                 if (fe0->dvb.frontend == NULL)
471                         fe0->dvb.frontend = dvb_attach(s5h1411_attach,
472                                                         &dvico_s5h1411_config,
473                                                         &i2c_bus->i2c_adap);
474                 if (fe0->dvb.frontend != NULL)
475                         dvb_attach(xc5000_attach, fe0->dvb.frontend,
476                                    &i2c_bus->i2c_adap,
477                                    &dvico_xc5000_tunerconfig);
478                 break;
479         case CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP: {
480                 i2c_bus = &dev->i2c_bus[port->nr - 1];
481
482                 fe0->dvb.frontend = dvb_attach(zl10353_attach,
483                                                &dvico_fusionhdtv_xc3028,
484                                                &i2c_bus->i2c_adap);
485                 if (fe0->dvb.frontend != NULL) {
486                         struct dvb_frontend      *fe;
487                         struct xc2028_config      cfg = {
488                                 .i2c_adap  = &i2c_bus->i2c_adap,
489                                 .i2c_addr  = 0x61,
490                         };
491                         static struct xc2028_ctrl ctl = {
492                                 .fname       = XC2028_DEFAULT_FIRMWARE,
493                                 .max_len     = 64,
494                                 .demod       = XC3028_FE_ZARLINK456,
495                         };
496
497                         fe = dvb_attach(xc2028_attach, fe0->dvb.frontend,
498                                         &cfg);
499                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
500                                 fe->ops.tuner_ops.set_config(fe, &ctl);
501                 }
502                 break;
503         }
504         case CX23885_BOARD_LEADTEK_WINFAST_PXDVR3200_H:
505         case CX23885_BOARD_COMPRO_VIDEOMATE_E650F:
506                 i2c_bus = &dev->i2c_bus[0];
507
508                 fe0->dvb.frontend = dvb_attach(zl10353_attach,
509                         &dvico_fusionhdtv_xc3028,
510                         &i2c_bus->i2c_adap);
511                 if (fe0->dvb.frontend != NULL) {
512                         struct dvb_frontend      *fe;
513                         struct xc2028_config      cfg = {
514                                 .i2c_adap  = &dev->i2c_bus[1].i2c_adap,
515                                 .i2c_addr  = 0x61,
516                         };
517                         static struct xc2028_ctrl ctl = {
518                                 .fname       = XC2028_DEFAULT_FIRMWARE,
519                                 .max_len     = 64,
520                                 .demod       = XC3028_FE_ZARLINK456,
521                         };
522
523                         fe = dvb_attach(xc2028_attach, fe0->dvb.frontend,
524                                 &cfg);
525                         if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
526                                 fe->ops.tuner_ops.set_config(fe, &ctl);
527                 }
528                 break;
529         default:
530                 printk(KERN_INFO "%s: The frontend of your DVB/ATSC card "
531                         " isn't supported yet\n",
532                        dev->name);
533                 break;
534         }
535         if (NULL == fe0->dvb.frontend) {
536                 printk(KERN_ERR "%s: frontend initialization failed\n",
537                         dev->name);
538                 return -1;
539         }
540         /* define general-purpose callback pointer */
541         fe0->dvb.frontend->callback = cx23885_tuner_callback;
542
543         /* Put the analog decoder in standby to keep it quiet */
544         cx23885_call_i2c_clients(i2c_bus, TUNER_SET_STANDBY, NULL);
545
546         if (fe0->dvb.frontend->ops.analog_ops.standby)
547                 fe0->dvb.frontend->ops.analog_ops.standby(fe0->dvb.frontend);
548
549         /* register everything */
550         return videobuf_dvb_register_bus(&port->frontends, THIS_MODULE, port,
551                 &dev->pci->dev, adapter_nr, 0);
552
553 }
554
555 int cx23885_dvb_register(struct cx23885_tsport *port)
556 {
557
558         struct videobuf_dvb_frontend *fe0;
559         struct cx23885_dev *dev = port->dev;
560         int err, i;
561
562         /* Here we need to allocate the correct number of frontends,
563          * as reflected in the cards struct. The reality is that currrently
564          * no cx23885 boards support this - yet. But, if we don't modify this
565          * code then the second frontend would never be allocated (later)
566          * and fail with error before the attach in dvb_register().
567          * Without these changes we risk an OOPS later. The changes here
568          * are for safety, and should provide a good foundation for the
569          * future addition of any multi-frontend cx23885 based boards.
570          */
571         printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__,
572                 port->num_frontends);
573
574         for (i = 1; i <= port->num_frontends; i++) {
575                 if (videobuf_dvb_alloc_frontend(
576                         &port->frontends, i) == NULL) {
577                         printk(KERN_ERR "%s() failed to alloc\n", __func__);
578                         return -ENOMEM;
579                 }
580
581                 fe0 = videobuf_dvb_get_frontend(&port->frontends, i);
582                 if (!fe0)
583                         err = -EINVAL;
584
585                 dprintk(1, "%s\n", __func__);
586                 dprintk(1, " ->probed by Card=%d Name=%s, PCI %02x:%02x\n",
587                         dev->board,
588                         dev->name,
589                         dev->pci_bus,
590                         dev->pci_slot);
591
592                 err = -ENODEV;
593
594                 /* dvb stuff */
595                 /* We have to init the queue for each frontend on a port. */
596                 printk(KERN_INFO "%s: cx23885 based dvb card\n", dev->name);
597                 videobuf_queue_sg_init(&fe0->dvb.dvbq, &dvb_qops,
598                             &dev->pci->dev, &port->slock,
599                             V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_TOP,
600                             sizeof(struct cx23885_buffer), port);
601         }
602         err = dvb_register(port);
603         if (err != 0)
604                 printk(KERN_ERR "%s() dvb_register failed err = %d\n",
605                         __func__, err);
606
607         return err;
608 }
609
610 int cx23885_dvb_unregister(struct cx23885_tsport *port)
611 {
612         struct videobuf_dvb_frontend *fe0;
613
614         /* FIXME: in an error condition where the we have
615          * an expected number of frontends (attach problem)
616          * then this might not clean up correctly, if 1
617          * is invalid.
618          * This comment only applies to future boards IF they
619          * implement MFE support.
620          */
621         fe0 = videobuf_dvb_get_frontend(&port->frontends, 1);
622         if (fe0->dvb.frontend)
623                 videobuf_dvb_unregister_bus(&port->frontends);
624
625         return 0;
626 }
627