[PATCH] i2c: Drop i2c_driver.flags, 2 of 3
[linux-2.6.git] / drivers / media / video / tuner-core.c
1 /*
2  *
3  * i2c tv tuner chip device driver
4  * core core, i.e. kernel interfaces, registering and so on
5  */
6
7 #include <linux/module.h>
8 #include <linux/moduleparam.h>
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/string.h>
12 #include <linux/timer.h>
13 #include <linux/delay.h>
14 #include <linux/errno.h>
15 #include <linux/slab.h>
16 #include <linux/poll.h>
17 #include <linux/i2c.h>
18 #include <linux/types.h>
19 #include <linux/videodev.h>
20 #include <linux/init.h>
21
22 #include <media/tuner.h>
23 #include <media/audiochip.h>
24
25 #include "msp3400.h"
26
27 #define UNSET (-1U)
28
29 /* standard i2c insmod options */
30 static unsigned short normal_i2c[] = {
31         0x42, 0x43, 0x4a, 0x4b,                 /* tda8290 */
32         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
33         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
34         I2C_CLIENT_END
35 };
36
37 I2C_CLIENT_INSMOD;
38
39 /* insmod options used at init time => read/only */
40 static unsigned int addr = 0;
41 module_param(addr, int, 0444);
42
43 static unsigned int no_autodetect = 0;
44 module_param(no_autodetect, int, 0444);
45
46 static unsigned int show_i2c = 0;
47 module_param(show_i2c, int, 0444);
48
49 /* insmod options used at runtime => read/write */
50 unsigned int tuner_debug = 0;
51 module_param(tuner_debug, int, 0644);
52
53 static unsigned int tv_range[2] = { 44, 958 };
54 static unsigned int radio_range[2] = { 65, 108 };
55
56 module_param_array(tv_range, int, NULL, 0644);
57 module_param_array(radio_range, int, NULL, 0644);
58
59 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
60 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
61 MODULE_LICENSE("GPL");
62
63 static struct i2c_driver driver;
64 static struct i2c_client client_template;
65
66 /* ---------------------------------------------------------------------- */
67
68 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
69 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
70 {
71         struct tuner *t = i2c_get_clientdata(c);
72
73         if (t->type == UNSET) {
74                 tuner_warn ("tuner type not set\n");
75                 return;
76         }
77         if (NULL == t->tv_freq) {
78                 tuner_warn ("Tuner has no way to set tv freq\n");
79                 return;
80         }
81         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
82                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
83                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
84                            tv_range[1]);
85         }
86         t->tv_freq(c, freq);
87 }
88
89 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
90 {
91         struct tuner *t = i2c_get_clientdata(c);
92
93         if (t->type == UNSET) {
94                 tuner_warn ("tuner type not set\n");
95                 return;
96         }
97         if (NULL == t->radio_freq) {
98                 tuner_warn ("tuner has no way to set radio frequency\n");
99                 return;
100         }
101         if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
102                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
103                            freq / 16000, freq % 16000 * 100 / 16000,
104                            radio_range[0], radio_range[1]);
105         }
106
107         t->radio_freq(c, freq);
108         return;
109 }
110
111 static void set_freq(struct i2c_client *c, unsigned long freq)
112 {
113         struct tuner *t = i2c_get_clientdata(c);
114
115         switch (t->mode) {
116         case V4L2_TUNER_RADIO:
117                 tuner_dbg("radio freq set to %lu.%02lu\n",
118                           freq / 16000, freq % 16000 * 100 / 16000);
119                 set_radio_freq(c, freq);
120                 break;
121         case V4L2_TUNER_ANALOG_TV:
122         case V4L2_TUNER_DIGITAL_TV:
123                 tuner_dbg("tv freq set to %lu.%02lu\n",
124                           freq / 16, freq % 16 * 100 / 16);
125                 set_tv_freq(c, freq);
126                 break;
127         }
128         t->freq = freq;
129 }
130
131 static void set_type(struct i2c_client *c, unsigned int type,
132                      unsigned int new_mode_mask)
133 {
134         struct tuner *t = i2c_get_clientdata(c);
135         unsigned char buffer[4];
136
137         if (type == UNSET || type == TUNER_ABSENT) {
138                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
139                 return;
140         }
141
142         if (type >= tuner_count) {
143                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
144                 return;
145         }
146
147         /* This code detects calls by card attach_inform */
148         if (NULL == t->i2c.dev.driver) {
149                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
150
151                 t->type=type;
152                 return;
153         }
154
155         t->type = type;
156
157         switch (t->type) {
158         case TUNER_MT2032:
159                 microtune_init(c);
160                 break;
161         case TUNER_PHILIPS_TDA8290:
162                 tda8290_init(c);
163                 break;
164         case TUNER_TEA5767:
165                 if (tea5767_tuner_init(c) == EINVAL) {
166                         t->type = TUNER_ABSENT;
167                         t->mode_mask = T_UNINITIALIZED;
168                         return;
169                 }
170                 t->mode_mask = T_RADIO;
171                 break;
172         case TUNER_PHILIPS_FMD1216ME_MK3:
173                 buffer[0] = 0x0b;
174                 buffer[1] = 0xdc;
175                 buffer[2] = 0x9c;
176                 buffer[3] = 0x60;
177                 i2c_master_send(c, buffer, 4);
178                 mdelay(1);
179                 buffer[2] = 0x86;
180                 buffer[3] = 0x54;
181                 i2c_master_send(c, buffer, 4);
182                 default_tuner_init(c);
183                 break;
184         case TUNER_LG_TDVS_H062F:
185                 /* Set the Auxiliary Byte. */
186                 buffer[2] &= ~0x20;
187                 buffer[2] |= 0x18;
188                 buffer[3] = 0x20;
189                 i2c_master_send(c, buffer, 4);
190                 default_tuner_init(c);
191                 break;
192         case TUNER_PHILIPS_TD1316:
193                 buffer[0] = 0x0b;
194                 buffer[1] = 0xdc;
195                 buffer[2] = 0x86;
196                 buffer[3] = 0xa4;
197                 i2c_master_send(c,buffer,4);
198                 default_tuner_init(c);
199         default:
200                 default_tuner_init(c);
201                 break;
202         }
203
204         if (t->mode_mask == T_UNINITIALIZED)
205                 t->mode_mask = new_mode_mask;
206
207         set_freq(c, t->freq);
208         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
209                   c->adapter->name, c->driver->name, c->addr << 1, type,
210                   t->mode_mask);
211 }
212
213 /*
214  * This function apply tuner config to tuner specified
215  * by tun_setup structure. I addr is unset, then admin status
216  * and tun addr status is more precise then current status,
217  * it's applied. Otherwise status and type are applied only to
218  * tuner with exactly the same addr.
219 */
220
221 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
222 {
223         struct tuner *t = i2c_get_clientdata(c);
224
225         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
226                 (t->mode_mask & tun_setup->mode_mask)) ||
227                 tun_setup->addr == c->addr)) {
228                         set_type(c, tun_setup->type, tun_setup->mode_mask);
229         }
230 }
231
232 static inline int check_mode(struct tuner *t, char *cmd)
233 {
234         if ((1 << t->mode & t->mode_mask) == 0) {
235                 return EINVAL;
236         }
237
238         switch (t->mode) {
239         case V4L2_TUNER_RADIO:
240                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
241                 break;
242         case V4L2_TUNER_ANALOG_TV:
243                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
244                 break;
245         case V4L2_TUNER_DIGITAL_TV:
246                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
247                 break;
248         }
249         return 0;
250 }
251
252 static char pal[] = "-";
253 module_param_string(pal, pal, sizeof(pal), 0644);
254 static char secam[] = "--";
255 module_param_string(secam, secam, sizeof(secam), 0644);
256
257 /* get more precise norm info from insmod option */
258 static int tuner_fixup_std(struct tuner *t)
259 {
260         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
261                 switch (pal[0]) {
262                 case 'b':
263                 case 'B':
264                 case 'g':
265                 case 'G':
266                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
267                         t->std = V4L2_STD_PAL_BG;
268                         break;
269                 case 'i':
270                 case 'I':
271                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
272                         t->std = V4L2_STD_PAL_I;
273                         break;
274                 case 'd':
275                 case 'D':
276                 case 'k':
277                 case 'K':
278                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
279                         t->std = V4L2_STD_PAL_DK;
280                         break;
281                 case 'M':
282                 case 'm':
283                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
284                         t->std = V4L2_STD_PAL_M;
285                         break;
286                 case 'N':
287                 case 'n':
288                         tuner_dbg ("insmod fixup: PAL => PAL-N\n");
289                         t->std = V4L2_STD_PAL_N;
290                         break;
291                 case '-':
292                         /* default parameter, do nothing */
293                         break;
294                 default:
295                         tuner_warn ("pal= argument not recognised\n");
296                         break;
297                 }
298         }
299         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
300                 switch (secam[0]) {
301                 case 'd':
302                 case 'D':
303                 case 'k':
304                 case 'K':
305                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
306                         t->std = V4L2_STD_SECAM_DK;
307                         break;
308                 case 'l':
309                 case 'L':
310                         if ((secam[1]=='C')||(secam[1]=='c')) {
311                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
312                                 t->std = V4L2_STD_SECAM_LC;
313                         } else {
314                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
315                                 t->std = V4L2_STD_SECAM_L;
316                         }
317                         break;
318                 case '-':
319                         /* default parameter, do nothing */
320                         break;
321                 default:
322                         tuner_warn ("secam= argument not recognised\n");
323                         break;
324                 }
325         }
326
327         return 0;
328 }
329
330 /* ---------------------------------------------------------------------- */
331
332 /* static var Used only in tuner_attach and tuner_probe */
333 static unsigned default_mode_mask;
334
335 /* During client attach, set_type is called by adapter's attach_inform callback.
336    set_type must then be completed by tuner_attach.
337  */
338 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
339 {
340         struct tuner *t;
341
342         client_template.adapter = adap;
343         client_template.addr = addr;
344
345         t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
346         if (NULL == t)
347                 return -ENOMEM;
348         memset(t, 0, sizeof(struct tuner));
349         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
350         i2c_set_clientdata(&t->i2c, t);
351         t->type = UNSET;
352         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
353         t->audmode = V4L2_TUNER_MODE_STEREO;
354         t->mode_mask = T_UNINITIALIZED;
355
356         if (show_i2c) {
357                 unsigned char buffer[16];
358                 int i,rc;
359
360                 memset(buffer, 0, sizeof(buffer));
361                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
362                 tuner_info("I2C RECV = ");
363                 for (i=0;i<rc;i++)
364                         printk("%02x ",buffer[i]);
365                 printk("\n");
366         }
367         /* TEA5767 autodetection code - only for addr = 0xc0 */
368         if (!no_autodetect) {
369                 switch (addr) {
370                 case 0x42:
371                 case 0x43:
372                 case 0x4a:
373                 case 0x4b:
374                         /* If chip is not tda8290, don't register.
375                            since it can be tda9887*/
376                         if (tda8290_probe(&t->i2c) != 0) {
377                                 tuner_dbg("chip at addr %x is not a tda8290\n", addr);
378                                 kfree(t);
379                                 return 0;
380                         }
381                         break;
382                 case 0x60:
383                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
384                                 t->type = TUNER_TEA5767;
385                                 t->mode_mask = T_RADIO;
386                                 t->mode = T_STANDBY;
387                                 t->freq = 87.5 * 16; /* Sets freq to FM range */
388                                 default_mode_mask &= ~T_RADIO;
389
390                                 goto register_client;
391                         }
392                         break;
393                 }
394         }
395
396         /* Initializes only the first adapter found */
397         if (default_mode_mask != T_UNINITIALIZED) {
398                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
399                 t->mode_mask = default_mode_mask;
400                 t->freq = 400 * 16; /* Sets freq to VHF High */
401                 default_mode_mask = T_UNINITIALIZED;
402         }
403
404         /* Should be just before return */
405 register_client:
406         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
407         i2c_attach_client (&t->i2c);
408         set_type (&t->i2c,t->type, t->mode_mask);
409         return 0;
410 }
411
412 static int tuner_probe(struct i2c_adapter *adap)
413 {
414         if (0 != addr) {
415                 normal_i2c[0] = addr;
416                 normal_i2c[1] = I2C_CLIENT_END;
417         }
418
419         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
420
421         if (adap->class & I2C_CLASS_TV_ANALOG)
422                 return i2c_probe(adap, &addr_data, tuner_attach);
423         return 0;
424 }
425
426 static int tuner_detach(struct i2c_client *client)
427 {
428         struct tuner *t = i2c_get_clientdata(client);
429         int err;
430
431         err = i2c_detach_client(&t->i2c);
432         if (err) {
433                 tuner_warn
434                     ("Client deregistration failed, client not detached.\n");
435                 return err;
436         }
437
438         kfree(t);
439         return 0;
440 }
441
442 /*
443  * Switch tuner to other mode. If tuner support both tv and radio,
444  * set another frequency to some value (This is needed for some pal
445  * tuners to avoid locking). Otherwise, just put second tuner in
446  * standby mode.
447  */
448
449 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
450 {
451         if (mode == t->mode)
452                 return 0;
453
454         t->mode = mode;
455
456         if (check_mode(t, cmd) == EINVAL) {
457                 t->mode = T_STANDBY;
458                 if (t->standby)
459                         t->standby (client);
460                 return EINVAL;
461         }
462         return 0;
463 }
464
465 #define switch_v4l2()   if (!t->using_v4l2) \
466                             tuner_dbg("switching to v4l2\n"); \
467                         t->using_v4l2 = 1;
468
469 static inline int check_v4l2(struct tuner *t)
470 {
471         if (t->using_v4l2) {
472                 tuner_dbg ("ignore v4l1 call\n");
473                 return EINVAL;
474         }
475         return 0;
476 }
477
478 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
479 {
480         struct tuner *t = i2c_get_clientdata(client);
481         unsigned int *iarg = (int *)arg;
482
483         switch (cmd) {
484         /* --- configuration --- */
485         case TUNER_SET_TYPE_ADDR:
486                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
487                                 ((struct tuner_setup *)arg)->type,
488                                 ((struct tuner_setup *)arg)->addr,
489                                 ((struct tuner_setup *)arg)->mode_mask);
490
491                 set_addr(client, (struct tuner_setup *)arg);
492                 break;
493         case AUDC_SET_RADIO:
494                 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
495                 break;
496         case TUNER_SET_STANDBY:
497                 {
498                         if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
499                                 return 0;
500                         if (t->standby)
501                                 t->standby (client);
502                         break;
503                 }
504         case AUDC_CONFIG_PINNACLE:
505                 switch (*iarg) {
506                 case 2:
507                         tuner_dbg("pinnacle pal\n");
508                         t->radio_if2 = 33300 * 1000;
509                         break;
510                 case 3:
511                         tuner_dbg("pinnacle ntsc\n");
512                         t->radio_if2 = 41300 * 1000;
513                         break;
514                 }
515                 break;
516         case VIDIOCSAUDIO:
517                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
518                         return 0;
519                 if (check_v4l2(t) == EINVAL)
520                         return 0;
521
522                 /* Should be implemented, since bttv calls it */
523                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
524
525                 break;
526         case MSP_SET_MATRIX:
527         case TDA9887_SET_CONFIG:
528                 break;
529         /* --- v4l ioctls --- */
530         /* take care: bttv does userspace copying, we'll get a
531            kernel pointer here... */
532         case VIDIOCSCHAN:
533                 {
534                         static const v4l2_std_id map[] = {
535                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
536                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
537                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
538                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
539                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
540                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
541                         };
542                         struct video_channel *vc = arg;
543
544                         if (check_v4l2(t) == EINVAL)
545                                 return 0;
546
547                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
548                                 return 0;
549
550                         if (vc->norm < ARRAY_SIZE(map))
551                                 t->std = map[vc->norm];
552                         tuner_fixup_std(t);
553                         if (t->freq)
554                                 set_tv_freq(client, t->freq);
555                         return 0;
556                 }
557         case VIDIOCSFREQ:
558                 {
559                         unsigned long *v = arg;
560
561                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
562                                 return 0;
563                         if (check_v4l2(t) == EINVAL)
564                                 return 0;
565
566                         set_freq(client, *v);
567                         return 0;
568                 }
569         case VIDIOCGTUNER:
570                 {
571                         struct video_tuner *vt = arg;
572
573                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
574                                 return 0;
575                         if (check_v4l2(t) == EINVAL)
576                                 return 0;
577
578                         if (V4L2_TUNER_RADIO == t->mode) {
579                                 if (t->has_signal)
580                                         vt->signal = t->has_signal(client);
581                                 if (t->is_stereo) {
582                                         if (t->is_stereo(client))
583                                                 vt->flags |=
584                                                     VIDEO_TUNER_STEREO_ON;
585                                         else
586                                                 vt->flags &=
587                                                     ~VIDEO_TUNER_STEREO_ON;
588                                 }
589                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
590
591                                 vt->rangelow = radio_range[0] * 16000;
592                                 vt->rangehigh = radio_range[1] * 16000;
593
594                         } else {
595                                 vt->rangelow = tv_range[0] * 16;
596                                 vt->rangehigh = tv_range[1] * 16;
597                         }
598
599                         return 0;
600                 }
601         case VIDIOCGAUDIO:
602                 {
603                         struct video_audio *va = arg;
604
605                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
606                                 return 0;
607                         if (check_v4l2(t) == EINVAL)
608                                 return 0;
609
610                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
611                                 va->mode = t->is_stereo(client)
612                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
613                         return 0;
614                 }
615
616         case VIDIOC_S_STD:
617                 {
618                         v4l2_std_id *id = arg;
619
620                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
621                                         == EINVAL)
622                                 return 0;
623
624                         switch_v4l2();
625
626                         t->std = *id;
627                         tuner_fixup_std(t);
628                         if (t->freq)
629                                 set_freq(client, t->freq);
630                         break;
631                 }
632         case VIDIOC_S_FREQUENCY:
633                 {
634                         struct v4l2_frequency *f = arg;
635
636                         t->freq = f->frequency;
637                         switch_v4l2();
638                         if (V4L2_TUNER_RADIO == f->type &&
639                             V4L2_TUNER_RADIO != t->mode) {
640                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
641                                             == EINVAL)
642                                         return 0;
643                         }
644                         set_freq(client,t->freq);
645
646                         break;
647                 }
648         case VIDIOC_G_FREQUENCY:
649                 {
650                         struct v4l2_frequency *f = arg;
651
652                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
653                                 return 0;
654                         switch_v4l2();
655                         f->type = t->mode;
656                         f->frequency = t->freq;
657                         break;
658                 }
659         case VIDIOC_G_TUNER:
660                 {
661                         struct v4l2_tuner *tuner = arg;
662
663                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
664                                 return 0;
665                         switch_v4l2();
666
667                         if (V4L2_TUNER_RADIO == t->mode) {
668
669                                 if (t->has_signal)
670                                         tuner->signal = t->has_signal(client);
671
672                                 if (t->is_stereo) {
673                                         if (t->is_stereo(client)) {
674                                                 tuner->rxsubchans =
675                                                     V4L2_TUNER_SUB_STEREO |
676                                                     V4L2_TUNER_SUB_MONO;
677                                         } else {
678                                                 tuner->rxsubchans =
679                                                     V4L2_TUNER_SUB_MONO;
680                                         }
681                                 }
682
683                                 tuner->capability |=
684                                     V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
685
686                                 tuner->audmode = t->audmode;
687
688                                 tuner->rangelow = radio_range[0] * 16000;
689                                 tuner->rangehigh = radio_range[1] * 16000;
690                         } else {
691                                 tuner->rangelow = tv_range[0] * 16;
692                                 tuner->rangehigh = tv_range[1] * 16;
693                         }
694                         break;
695                 }
696         case VIDIOC_S_TUNER:
697                 {
698                         struct v4l2_tuner *tuner = arg;
699
700                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
701                                 return 0;
702
703                         switch_v4l2();
704
705                         if (V4L2_TUNER_RADIO == t->mode) {
706                                 t->audmode = tuner->audmode;
707                                 set_radio_freq(client, t->freq);
708                         }
709                         break;
710                 }
711         default:
712                 tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp='%c',nr=%d,sz=%d)\n",
713                                          cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
714                                         _IOC_NR(cmd), _IOC_SIZE(cmd));
715                 break;
716         }
717
718         return 0;
719 }
720
721 static int tuner_suspend(struct device *dev, pm_message_t state)
722 {
723         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
724         struct tuner *t = i2c_get_clientdata (c);
725
726         tuner_dbg ("suspend\n");
727         /* FIXME: power down ??? */
728         return 0;
729 }
730
731 static int tuner_resume(struct device *dev)
732 {
733         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
734         struct tuner *t = i2c_get_clientdata (c);
735
736         tuner_dbg ("resume\n");
737         if (t->freq)
738                 set_freq(c, t->freq);
739         return 0;
740 }
741
742 /* ----------------------------------------------------------------------- */
743
744 static struct i2c_driver driver = {
745         .owner = THIS_MODULE,
746         .name = "tuner",
747         .id = I2C_DRIVERID_TUNER,
748         .attach_adapter = tuner_probe,
749         .detach_client = tuner_detach,
750         .command = tuner_command,
751         .driver = {
752                    .suspend = tuner_suspend,
753                    .resume = tuner_resume,
754                    },
755 };
756 static struct i2c_client client_template = {
757         .name = "(tuner unset)",
758         .flags = I2C_CLIENT_ALLOW_USE,
759         .driver = &driver,
760 };
761
762 static int __init tuner_init_module(void)
763 {
764         return i2c_add_driver(&driver);
765 }
766
767 static void __exit tuner_cleanup_module(void)
768 {
769         i2c_del_driver(&driver);
770 }
771
772 module_init(tuner_init_module);
773 module_exit(tuner_cleanup_module);
774
775 /*
776  * Overrides for Emacs so that we follow Linus's tabbing style.
777  * ---------------------------------------------------------------------------
778  * Local variables:
779  * c-basic-offset: 8
780  * End:
781  */