[PATCH] v4l: bug fixes for tuner, cx88 and tea5767
[linux-2.6.git] / drivers / media / video / tuner-core.c
1 /*
2  * $Id: tuner-core.c,v 1.58 2005/07/14 03:06:43 mchehab Exp $
3  *
4  * i2c tv tuner chip device driver
5  * core core, i.e. kernel interfaces, registering and so on
6  */
7
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/string.h>
13 #include <linux/timer.h>
14 #include <linux/delay.h>
15 #include <linux/errno.h>
16 #include <linux/slab.h>
17 #include <linux/poll.h>
18 #include <linux/i2c.h>
19 #include <linux/types.h>
20 #include <linux/videodev.h>
21 #include <linux/init.h>
22
23 #include <media/tuner.h>
24 #include <media/audiochip.h>
25
26 #define UNSET (-1U)
27
28 /* standard i2c insmod options */
29 static unsigned short normal_i2c[] = {
30         0x4b,                   /* tda8290 */
31         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
32         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
33         I2C_CLIENT_END
34 };
35
36 I2C_CLIENT_INSMOD;
37
38 /* insmod options used at init time => read/only */
39 static unsigned int addr = 0;
40 module_param(addr, int, 0444);
41
42 static unsigned int no_autodetect = 0;
43 module_param(no_autodetect, int, 0444);
44
45 /* insmod options used at runtime => read/write */
46 unsigned int tuner_debug = 0;
47 module_param(tuner_debug, int, 0644);
48
49 static unsigned int tv_range[2] = { 44, 958 };
50 static unsigned int radio_range[2] = { 65, 108 };
51
52 module_param_array(tv_range, int, NULL, 0644);
53 module_param_array(radio_range, int, NULL, 0644);
54
55 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
56 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
57 MODULE_LICENSE("GPL");
58
59 static struct i2c_driver driver;
60 static struct i2c_client client_template;
61
62 /* ---------------------------------------------------------------------- */
63
64 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
65 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
66 {
67         struct tuner *t = i2c_get_clientdata(c);
68
69         if (t->type == UNSET) {
70                 tuner_warn ("tuner type not set\n");
71                 return;
72         }
73         if (NULL == t->tv_freq) {
74                 tuner_warn ("Tuner has no way to set tv freq\n");
75                 return;
76         }
77         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
78                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
79                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
80                            tv_range[1]);
81         }
82         t->tv_freq(c, freq);
83 }
84
85 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
86 {
87         struct tuner *t = i2c_get_clientdata(c);
88
89         if (t->type == UNSET) {
90                 tuner_warn ("tuner type not set\n");
91                 return;
92         }
93         if (NULL == t->radio_freq) {
94                 tuner_warn ("tuner has no way to set radio frequency\n");
95                 return;
96         }
97         if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
98                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
99                            freq / 16000, freq % 16000 * 100 / 16000,
100                            radio_range[0], radio_range[1]);
101         }
102
103         t->radio_freq(c, freq);
104         return;
105 }
106
107 static void set_freq(struct i2c_client *c, unsigned long freq)
108 {
109         struct tuner *t = i2c_get_clientdata(c);
110
111         switch (t->mode) {
112         case V4L2_TUNER_RADIO:
113                 tuner_dbg("radio freq set to %lu.%02lu\n",
114                           freq / 16000, freq % 16000 * 100 / 16000);
115                 set_radio_freq(c, freq);
116                 break;
117         case V4L2_TUNER_ANALOG_TV:
118         case V4L2_TUNER_DIGITAL_TV:
119                 tuner_dbg("tv freq set to %lu.%02lu\n",
120                           freq / 16, freq % 16 * 100 / 16);
121                 set_tv_freq(c, freq);
122                 break;
123         }
124         t->freq = freq;
125 }
126
127 static void set_type(struct i2c_client *c, unsigned int type,
128                      unsigned int new_mode_mask)
129 {
130         struct tuner *t = i2c_get_clientdata(c);
131         unsigned char buffer[4];
132
133         if (type == UNSET || type == TUNER_ABSENT) {
134                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
135                 return;
136         }
137
138         if (type >= tuner_count) {
139                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
140                 return;
141         }
142
143         /* This code detects calls by card attach_inform */
144         if (NULL == t->i2c.dev.driver) {
145                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
146
147                 t->type=type;
148                 return;
149         }
150
151         t->type = type;
152
153         switch (t->type) {
154         case TUNER_MT2032:
155                 microtune_init(c);
156                 break;
157         case TUNER_PHILIPS_TDA8290:
158                 tda8290_init(c);
159                 break;
160         case TUNER_TEA5767:
161                 if (tea5767_tuner_init(c) == EINVAL) {
162                         t->type = TUNER_ABSENT;
163                         t->mode_mask = T_UNINITIALIZED;
164                         return;
165                 }
166                 t->mode_mask = T_RADIO;
167                 break;
168         case TUNER_PHILIPS_FMD1216ME_MK3:
169                 buffer[0] = 0x0b;
170                 buffer[1] = 0xdc;
171                 buffer[2] = 0x9c;
172                 buffer[3] = 0x60;
173                 i2c_master_send(c, buffer, 4);
174                 mdelay(1);
175                 buffer[2] = 0x86;
176                 buffer[3] = 0x54;
177                 i2c_master_send(c, buffer, 4);
178                 default_tuner_init(c);
179                 break;
180         default:
181                 default_tuner_init(c);
182                 break;
183         }
184
185         if (t->mode_mask == T_UNINITIALIZED)
186                 t->mode_mask = new_mode_mask;
187
188         set_freq(c, t->freq);
189         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
190                   c->adapter->name, c->driver->name, c->addr << 1, type,
191                   t->mode_mask);
192 }
193
194 /*
195  * This function apply tuner config to tuner specified
196  * by tun_setup structure. I addr is unset, then admin status
197  * and tun addr status is more precise then current status,
198  * it's applied. Otherwise status and type are applied only to
199  * tuner with exactly the same addr.
200 */
201
202 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
203 {
204         struct tuner *t = i2c_get_clientdata(c);
205
206         if (tun_setup->addr == ADDR_UNSET) {
207                 if (t->mode_mask & tun_setup->mode_mask)
208                         set_type(c, tun_setup->type, tun_setup->mode_mask);
209         } else if (tun_setup->addr == c->addr) {
210                 set_type(c, tun_setup->type, tun_setup->mode_mask);
211         }
212 }
213
214 static inline int check_mode(struct tuner *t, char *cmd)
215 {
216         if (1 << t->mode & t->mode_mask) {
217                 switch (t->mode) {
218                 case V4L2_TUNER_RADIO:
219                         tuner_dbg("Cmd %s accepted for radio\n", cmd);
220                         break;
221                 case V4L2_TUNER_ANALOG_TV:
222                         tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
223                         break;
224                 case V4L2_TUNER_DIGITAL_TV:
225                         tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
226                         break;
227                 }
228                 return 0;
229         }
230         return EINVAL;
231 }
232
233 static char pal[] = "-";
234 module_param_string(pal, pal, sizeof(pal), 0644);
235 static char secam[] = "-";
236 module_param_string(secam, secam, sizeof(secam), 0644);
237
238 /* get more precise norm info from insmod option */
239 static int tuner_fixup_std(struct tuner *t)
240 {
241         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
242                 switch (pal[0]) {
243                 case 'b':
244                 case 'B':
245                 case 'g':
246                 case 'G':
247                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
248                         t->std = V4L2_STD_PAL_BG;
249                         break;
250                 case 'i':
251                 case 'I':
252                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
253                         t->std = V4L2_STD_PAL_I;
254                         break;
255                 case 'd':
256                 case 'D':
257                 case 'k':
258                 case 'K':
259                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
260                         t->std = V4L2_STD_PAL_DK;
261                         break;
262                 case 'M':
263                 case 'm':
264                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
265                         t->std = V4L2_STD_PAL_M;
266                         break;
267                 case 'N':
268                 case 'n':
269                         tuner_dbg ("insmod fixup: PAL => PAL-N\n");
270                         t->std = V4L2_STD_PAL_N;
271                         break;
272                 }
273         }
274         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
275                 switch (secam[0]) {
276                 case 'd':
277                 case 'D':
278                 case 'k':
279                 case 'K':
280                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
281                         t->std = V4L2_STD_SECAM_DK;
282                         break;
283                 case 'l':
284                 case 'L':
285                         tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
286                         t->std = V4L2_STD_SECAM_L;
287                         break;
288                 }
289         }
290
291         return 0;
292 }
293
294 /* ---------------------------------------------------------------------- */
295
296 /* static var Used only in tuner_attach and tuner_probe */
297 static unsigned default_mode_mask;
298
299 /* During client attach, set_type is called by adapter's attach_inform callback.
300    set_type must then be completed by tuner_attach.
301  */
302 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
303 {
304         struct tuner *t;
305
306         client_template.adapter = adap;
307         client_template.addr = addr;
308
309         t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
310         if (NULL == t)
311                 return -ENOMEM;
312         memset(t, 0, sizeof(struct tuner));
313         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
314         i2c_set_clientdata(&t->i2c, t);
315         t->type = UNSET;
316         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
317         t->audmode = V4L2_TUNER_MODE_STEREO;
318         t->mode_mask = T_UNINITIALIZED;
319
320
321         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
322
323         /* TEA5767 autodetection code - only for addr = 0xc0 */
324         if (!no_autodetect) {
325                 if (addr == 0x60) {
326                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
327                                 t->type = TUNER_TEA5767;
328                                 t->mode_mask = T_RADIO;
329                                 t->mode = T_STANDBY;
330                                 t->freq = 87.5 * 16; /* Sets freq to FM range */
331                                 default_mode_mask &= ~T_RADIO;
332
333                                 i2c_attach_client (&t->i2c);
334                                 set_type(&t->i2c,t->type, t->mode_mask);
335                                 return 0;
336                         }
337                 }
338         }
339
340         /* Initializes only the first adapter found */
341         if (default_mode_mask != T_UNINITIALIZED) {
342                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
343                 t->mode_mask = default_mode_mask;
344                 t->freq = 400 * 16; /* Sets freq to VHF High */
345                 default_mode_mask = T_UNINITIALIZED;
346         }
347
348         /* Should be just before return */
349         i2c_attach_client (&t->i2c);
350         set_type (&t->i2c,t->type, t->mode_mask);
351         return 0;
352 }
353
354 static int tuner_probe(struct i2c_adapter *adap)
355 {
356         if (0 != addr) {
357                 normal_i2c[0] = addr;
358                 normal_i2c[1] = I2C_CLIENT_END;
359         }
360
361         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
362
363         if (adap->class & I2C_CLASS_TV_ANALOG)
364                 return i2c_probe(adap, &addr_data, tuner_attach);
365         return 0;
366 }
367
368 static int tuner_detach(struct i2c_client *client)
369 {
370         struct tuner *t = i2c_get_clientdata(client);
371         int err;
372
373         err = i2c_detach_client(&t->i2c);
374         if (err) {
375                 tuner_warn
376                     ("Client deregistration failed, client not detached.\n");
377                 return err;
378         }
379
380         kfree(t);
381         return 0;
382 }
383
384 /*
385  * Switch tuner to other mode. If tuner support both tv and radio,
386  * set another frequency to some value (This is needed for some pal
387  * tuners to avoid locking). Otherwise, just put second tuner in
388  * standby mode.
389  */
390
391 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
392 {
393         if (mode != t->mode) {
394
395                 t->mode = mode;
396                 if (check_mode(t, cmd) == EINVAL) {
397                         t->mode = T_STANDBY;
398                         if (V4L2_TUNER_RADIO == mode) {
399                                 set_tv_freq(client, 400 * 16);
400                         } else {
401                                 set_radio_freq(client, 87.5 * 16000);
402                         }
403                         return EINVAL;
404                 }
405         }
406         return 0;
407 }
408
409 #define switch_v4l2()   if (!t->using_v4l2) \
410                             tuner_dbg("switching to v4l2\n"); \
411                         t->using_v4l2 = 1;
412
413 static inline int check_v4l2(struct tuner *t)
414 {
415         if (t->using_v4l2) {
416                 tuner_dbg ("ignore v4l1 call\n");
417                 return EINVAL;
418         }
419         return 0;
420 }
421
422 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
423 {
424         struct tuner *t = i2c_get_clientdata(client);
425         unsigned int *iarg = (int *)arg;
426
427         switch (cmd) {
428         /* --- configuration --- */
429         case TUNER_SET_TYPE_ADDR:
430                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
431                                 ((struct tuner_setup *)arg)->type,
432                                 ((struct tuner_setup *)arg)->addr,
433                                 ((struct tuner_setup *)arg)->mode_mask);
434
435                 set_addr(client, (struct tuner_setup *)arg);
436                 break;
437         case AUDC_SET_RADIO:
438                 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
439                 break;
440         case AUDC_CONFIG_PINNACLE:
441                 if (check_mode(t, "AUDC_CONFIG_PINNACLE") == EINVAL)
442                         return 0;
443                 switch (*iarg) {
444                 case 2:
445                         tuner_dbg("pinnacle pal\n");
446                         t->radio_if2 = 33300 * 1000;
447                         break;
448                 case 3:
449                         tuner_dbg("pinnacle ntsc\n");
450                         t->radio_if2 = 41300 * 1000;
451                         break;
452                 }
453                 break;
454         case TDA9887_SET_CONFIG:
455                 break;
456         /* --- v4l ioctls --- */
457         /* take care: bttv does userspace copying, we'll get a
458            kernel pointer here... */
459         case VIDIOCSCHAN:
460                 {
461                         static const v4l2_std_id map[] = {
462                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
463                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
464                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
465                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
466                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
467                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
468                         };
469                         struct video_channel *vc = arg;
470
471                         if (check_v4l2(t) == EINVAL)
472                                 return 0;
473
474                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
475                                 return 0;
476
477                         if (vc->norm < ARRAY_SIZE(map))
478                                 t->std = map[vc->norm];
479                         tuner_fixup_std(t);
480                         if (t->freq)
481                                 set_tv_freq(client, t->freq);
482                         return 0;
483                 }
484         case VIDIOCSFREQ:
485                 {
486                         unsigned long *v = arg;
487
488                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
489                                 return 0;
490                         if (check_v4l2(t) == EINVAL)
491                                 return 0;
492
493                         set_freq(client, *v);
494                         return 0;
495                 }
496         case VIDIOCGTUNER:
497                 {
498                         struct video_tuner *vt = arg;
499
500                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
501                                 return 0;
502                         if (check_v4l2(t) == EINVAL)
503                                 return 0;
504
505                         if (V4L2_TUNER_RADIO == t->mode) {
506                                 if (t->has_signal)
507                                         vt->signal = t->has_signal(client);
508                                 if (t->is_stereo) {
509                                         if (t->is_stereo(client))
510                                                 vt->flags |=
511                                                     VIDEO_TUNER_STEREO_ON;
512                                         else
513                                                 vt->flags &=
514                                                     ~VIDEO_TUNER_STEREO_ON;
515                                 }
516                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
517
518                                 vt->rangelow = radio_range[0] * 16000;
519                                 vt->rangehigh = radio_range[1] * 16000;
520
521                         } else {
522                                 vt->rangelow = tv_range[0] * 16;
523                                 vt->rangehigh = tv_range[1] * 16;
524                         }
525
526                         return 0;
527                 }
528         case VIDIOCGAUDIO:
529                 {
530                         struct video_audio *va = arg;
531
532                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
533                                 return 0;
534                         if (check_v4l2(t) == EINVAL)
535                                 return 0;
536
537                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
538                                 va->mode = t->is_stereo(client)
539                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
540                         return 0;
541                 }
542
543         case VIDIOC_S_STD:
544                 {
545                         v4l2_std_id *id = arg;
546
547                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
548                                         == EINVAL)
549                                 return 0;
550
551                         switch_v4l2();
552
553                         t->std = *id;
554                         tuner_fixup_std(t);
555                         if (t->freq)
556                                 set_freq(client, t->freq);
557                         break;
558                 }
559         case VIDIOC_S_FREQUENCY:
560                 {
561                         struct v4l2_frequency *f = arg;
562
563                         t->freq = f->frequency;
564                         switch_v4l2();
565                         if (V4L2_TUNER_RADIO == f->type &&
566                             V4L2_TUNER_RADIO != t->mode) {
567                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
568                                             == EINVAL)
569                                         return 0;
570                         }
571                         set_freq(client,t->freq);
572
573                         break;
574                 }
575         case VIDIOC_G_FREQUENCY:
576                 {
577                         struct v4l2_frequency *f = arg;
578
579                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
580                                 return 0;
581                         switch_v4l2();
582                         f->type = t->mode;
583                         f->frequency = t->freq;
584                         break;
585                 }
586         case VIDIOC_G_TUNER:
587                 {
588                         struct v4l2_tuner *tuner = arg;
589
590                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
591                                 return 0;
592                         switch_v4l2();
593
594                         if (V4L2_TUNER_RADIO == t->mode) {
595
596                                 if (t->has_signal)
597                                         tuner->signal = t->has_signal(client);
598
599                                 if (t->is_stereo) {
600                                         if (t->is_stereo(client)) {
601                                                 tuner->rxsubchans =
602                                                     V4L2_TUNER_SUB_STEREO |
603                                                     V4L2_TUNER_SUB_MONO;
604                                         } else {
605                                                 tuner->rxsubchans =
606                                                     V4L2_TUNER_SUB_MONO;
607                                         }
608                                 }
609
610                                 tuner->capability |=
611                                     V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
612
613                                 tuner->audmode = t->audmode;
614
615                                 tuner->rangelow = radio_range[0] * 16000;
616                                 tuner->rangehigh = radio_range[1] * 16000;
617                         } else {
618                                 tuner->rangelow = tv_range[0] * 16;
619                                 tuner->rangehigh = tv_range[1] * 16;
620                         }
621                         break;
622                 }
623         case VIDIOC_S_TUNER:
624                 {
625                         struct v4l2_tuner *tuner = arg;
626
627                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
628                                 return 0;
629
630                         switch_v4l2();
631
632                         if (V4L2_TUNER_RADIO == t->mode) {
633                                 t->audmode = tuner->audmode;
634                                 set_radio_freq(client, t->freq);
635                         }
636                         break;
637                 }
638         default:
639                 tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp=0x%02x,nr=%d,sz=%d)\n",
640                                          cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
641                                         _IOC_NR(cmd), _IOC_SIZE(cmd));
642                 break;
643         }
644
645         return 0;
646 }
647
648 static int tuner_suspend(struct device *dev, u32 state, u32 level)
649 {
650         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
651         struct tuner *t = i2c_get_clientdata (c);
652
653         tuner_dbg ("suspend\n");
654         /* FIXME: power down ??? */
655         return 0;
656 }
657
658 static int tuner_resume(struct device *dev, u32 level)
659 {
660         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
661         struct tuner *t = i2c_get_clientdata (c);
662
663         tuner_dbg ("resume\n");
664         if (t->freq)
665                 set_freq(c, t->freq);
666         return 0;
667 }
668
669 /* ----------------------------------------------------------------------- */
670
671 static struct i2c_driver driver = {
672         .owner = THIS_MODULE,
673         .name = "tuner",
674         .id = I2C_DRIVERID_TUNER,
675         .flags = I2C_DF_NOTIFY,
676         .attach_adapter = tuner_probe,
677         .detach_client = tuner_detach,
678         .command = tuner_command,
679         .driver = {
680                    .suspend = tuner_suspend,
681                    .resume = tuner_resume,
682                    },
683 };
684 static struct i2c_client client_template = {
685         I2C_DEVNAME("(tuner unset)"),
686         .flags = I2C_CLIENT_ALLOW_USE,
687         .driver = &driver,
688 };
689
690 static int __init tuner_init_module(void)
691 {
692         return i2c_add_driver(&driver);
693 }
694
695 static void __exit tuner_cleanup_module(void)
696 {
697         i2c_del_driver(&driver);
698 }
699
700 module_init(tuner_init_module);
701 module_exit(tuner_cleanup_module);
702
703 /*
704  * Overrides for Emacs so that we follow Linus's tabbing style.
705  * ---------------------------------------------------------------------------
706  * Local variables:
707  * c-basic-offset: 8
708  * End:
709  */