Merge nommu tree
[linux-2.6] / 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/v4l2-common.h>
24
25 #define UNSET (-1U)
26
27 /* standard i2c insmod options */
28 static unsigned short normal_i2c[] = {
29         0x42, 0x43, 0x4a, 0x4b,                 /* tda8290 */
30         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
31         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
32         I2C_CLIENT_END
33 };
34
35 I2C_CLIENT_INSMOD;
36
37 /* insmod options used at init time => read/only */
38 static unsigned int addr = 0;
39 static unsigned int no_autodetect = 0;
40 static unsigned int show_i2c = 0;
41
42 /* insmod options used at runtime => read/write */
43 static unsigned int tuner_debug_old = 0;
44 int tuner_debug = 0;
45
46 static unsigned int tv_range[2] = { 44, 958 };
47 static unsigned int radio_range[2] = { 65, 108 };
48
49 static char pal[] = "--";
50 static char secam[] = "--";
51 static char ntsc[] = "-";
52
53
54 module_param(addr, int, 0444);
55 module_param(no_autodetect, int, 0444);
56 module_param(show_i2c, int, 0444);
57 /* Note: tuner_debug is deprecated and will be removed in 2.6.17 */
58 module_param_named(tuner_debug,tuner_debug_old, int, 0444);
59 module_param_named(debug,tuner_debug, int, 0644);
60 module_param_string(pal, pal, sizeof(pal), 0644);
61 module_param_string(secam, secam, sizeof(secam), 0644);
62 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
63 module_param_array(tv_range, int, NULL, 0644);
64 module_param_array(radio_range, int, NULL, 0644);
65
66 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
67 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
68 MODULE_LICENSE("GPL");
69
70 static struct i2c_driver driver;
71 static struct i2c_client client_template;
72
73 /* ---------------------------------------------------------------------- */
74
75 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
76 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
77 {
78         struct tuner *t = i2c_get_clientdata(c);
79
80         if (t->type == UNSET) {
81                 tuner_warn ("tuner type not set\n");
82                 return;
83         }
84         if (NULL == t->set_tv_freq) {
85                 tuner_warn ("Tuner has no way to set tv freq\n");
86                 return;
87         }
88         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
89                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
90                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
91                            tv_range[1]);
92                 /* V4L2 spec: if the freq is not possible then the closest
93                    possible value should be selected */
94                 if (freq < tv_range[0] * 16)
95                         freq = tv_range[0] * 16;
96                 else
97                         freq = tv_range[1] * 16;
98         }
99         t->set_tv_freq(c, freq);
100 }
101
102 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
103 {
104         struct tuner *t = i2c_get_clientdata(c);
105
106         if (t->type == UNSET) {
107                 tuner_warn ("tuner type not set\n");
108                 return;
109         }
110         if (NULL == t->set_radio_freq) {
111                 tuner_warn ("tuner has no way to set radio frequency\n");
112                 return;
113         }
114         if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
115                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
116                            freq / 16000, freq % 16000 * 100 / 16000,
117                            radio_range[0], radio_range[1]);
118                 /* V4L2 spec: if the freq is not possible then the closest
119                    possible value should be selected */
120                 if (freq < radio_range[0] * 16000)
121                         freq = radio_range[0] * 16000;
122                 else
123                         freq = radio_range[1] * 16000;
124         }
125
126         t->set_radio_freq(c, freq);
127 }
128
129 static void set_freq(struct i2c_client *c, unsigned long freq)
130 {
131         struct tuner *t = i2c_get_clientdata(c);
132
133         switch (t->mode) {
134         case V4L2_TUNER_RADIO:
135                 tuner_dbg("radio freq set to %lu.%02lu\n",
136                           freq / 16000, freq % 16000 * 100 / 16000);
137                 set_radio_freq(c, freq);
138                 t->radio_freq = freq;
139                 break;
140         case V4L2_TUNER_ANALOG_TV:
141         case V4L2_TUNER_DIGITAL_TV:
142                 tuner_dbg("tv freq set to %lu.%02lu\n",
143                           freq / 16, freq % 16 * 100 / 16);
144                 set_tv_freq(c, freq);
145                 t->tv_freq = freq;
146                 break;
147         }
148 }
149
150 static void set_type(struct i2c_client *c, unsigned int type,
151                      unsigned int new_mode_mask)
152 {
153         struct tuner *t = i2c_get_clientdata(c);
154         unsigned char buffer[4];
155
156         if (type == UNSET || type == TUNER_ABSENT) {
157                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
158                 return;
159         }
160
161         if (type >= tuner_count) {
162                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
163                 return;
164         }
165
166         /* This code detects calls by card attach_inform */
167         if (NULL == t->i2c.dev.driver) {
168                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
169
170                 t->type=type;
171                 return;
172         }
173
174         t->type = type;
175         switch (t->type) {
176         case TUNER_MT2032:
177                 microtune_init(c);
178                 break;
179         case TUNER_PHILIPS_TDA8290:
180                 tda8290_init(c);
181                 break;
182         case TUNER_TEA5767:
183                 if (tea5767_tuner_init(c) == EINVAL) {
184                         t->type = TUNER_ABSENT;
185                         t->mode_mask = T_UNINITIALIZED;
186                         return;
187                 }
188                 t->mode_mask = T_RADIO;
189                 break;
190         case TUNER_PHILIPS_FMD1216ME_MK3:
191                 buffer[0] = 0x0b;
192                 buffer[1] = 0xdc;
193                 buffer[2] = 0x9c;
194                 buffer[3] = 0x60;
195                 i2c_master_send(c, buffer, 4);
196                 mdelay(1);
197                 buffer[2] = 0x86;
198                 buffer[3] = 0x54;
199                 i2c_master_send(c, buffer, 4);
200                 default_tuner_init(c);
201                 break;
202         case TUNER_LG_TDVS_H062F:
203                 /* Set the Auxiliary Byte. */
204                 buffer[2] &= ~0x20;
205                 buffer[2] |= 0x18;
206                 buffer[3] = 0x20;
207                 i2c_master_send(c, buffer, 4);
208                 default_tuner_init(c);
209                 break;
210         case TUNER_PHILIPS_TD1316:
211                 buffer[0] = 0x0b;
212                 buffer[1] = 0xdc;
213                 buffer[2] = 0x86;
214                 buffer[3] = 0xa4;
215                 i2c_master_send(c,buffer,4);
216                 default_tuner_init(c);
217                 break;
218         default:
219                 default_tuner_init(c);
220                 break;
221         }
222
223         if (t->mode_mask == T_UNINITIALIZED)
224                 t->mode_mask = new_mode_mask;
225
226         set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? t->radio_freq : t->tv_freq);
227         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
228                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
229                   t->mode_mask);
230 }
231
232 /*
233  * This function apply tuner config to tuner specified
234  * by tun_setup structure. I addr is unset, then admin status
235  * and tun addr status is more precise then current status,
236  * it's applied. Otherwise status and type are applied only to
237  * tuner with exactly the same addr.
238 */
239
240 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
241 {
242         struct tuner *t = i2c_get_clientdata(c);
243
244         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
245                 (t->mode_mask & tun_setup->mode_mask)) ||
246                 tun_setup->addr == c->addr)) {
247                         set_type(c, tun_setup->type, tun_setup->mode_mask);
248         }
249 }
250
251 static inline int check_mode(struct tuner *t, char *cmd)
252 {
253         if ((1 << t->mode & t->mode_mask) == 0) {
254                 return EINVAL;
255         }
256
257         switch (t->mode) {
258         case V4L2_TUNER_RADIO:
259                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
260                 break;
261         case V4L2_TUNER_ANALOG_TV:
262                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
263                 break;
264         case V4L2_TUNER_DIGITAL_TV:
265                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
266                 break;
267         }
268         return 0;
269 }
270
271 /* get more precise norm info from insmod option */
272 static int tuner_fixup_std(struct tuner *t)
273 {
274         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
275                 switch (pal[0]) {
276                 case 'b':
277                 case 'B':
278                 case 'g':
279                 case 'G':
280                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
281                         t->std = V4L2_STD_PAL_BG;
282                         break;
283                 case 'i':
284                 case 'I':
285                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
286                         t->std = V4L2_STD_PAL_I;
287                         break;
288                 case 'd':
289                 case 'D':
290                 case 'k':
291                 case 'K':
292                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
293                         t->std = V4L2_STD_PAL_DK;
294                         break;
295                 case 'M':
296                 case 'm':
297                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
298                         t->std = V4L2_STD_PAL_M;
299                         break;
300                 case 'N':
301                 case 'n':
302                         if (pal[1] == 'c' || pal[1] == 'C') {
303                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
304                                 t->std = V4L2_STD_PAL_Nc;
305                         } else {
306                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
307                                 t->std = V4L2_STD_PAL_N;
308                         }
309                         break;
310                 case '-':
311                         /* default parameter, do nothing */
312                         break;
313                 default:
314                         tuner_warn ("pal= argument not recognised\n");
315                         break;
316                 }
317         }
318         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
319                 switch (secam[0]) {
320                 case 'b':
321                 case 'B':
322                 case 'g':
323                 case 'G':
324                 case 'h':
325                 case 'H':
326                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
327                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
328                         break;
329                 case 'd':
330                 case 'D':
331                 case 'k':
332                 case 'K':
333                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
334                         t->std = V4L2_STD_SECAM_DK;
335                         break;
336                 case 'l':
337                 case 'L':
338                         if ((secam[1]=='C')||(secam[1]=='c')) {
339                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
340                                 t->std = V4L2_STD_SECAM_LC;
341                         } else {
342                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
343                                 t->std = V4L2_STD_SECAM_L;
344                         }
345                         break;
346                 case '-':
347                         /* default parameter, do nothing */
348                         break;
349                 default:
350                         tuner_warn ("secam= argument not recognised\n");
351                         break;
352                 }
353         }
354
355         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
356                 switch (ntsc[0]) {
357                 case 'm':
358                 case 'M':
359                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
360                         t->std = V4L2_STD_NTSC_M;
361                         break;
362                 case 'j':
363                 case 'J':
364                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
365                         t->std = V4L2_STD_NTSC_M_JP;
366                         break;
367                 case 'k':
368                 case 'K':
369                         tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
370                         t->std = V4L2_STD_NTSC_M_KR;
371                         break;
372                 case '-':
373                         /* default parameter, do nothing */
374                         break;
375                 default:
376                         tuner_info("ntsc= argument not recognised\n");
377                         break;
378                 }
379         }
380         return 0;
381 }
382
383 static void tuner_status(struct i2c_client *client)
384 {
385         struct tuner *t = i2c_get_clientdata(client);
386         unsigned long freq, freq_fraction;
387         const char *p;
388
389         switch (t->mode) {
390                 case V4L2_TUNER_RADIO:      p = "radio"; break;
391                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
392                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
393                 default: p = "undefined"; break;
394         }
395         if (t->mode == V4L2_TUNER_RADIO) {
396                 freq = t->radio_freq / 16000;
397                 freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
398         } else {
399                 freq = t->tv_freq / 16;
400                 freq_fraction = (t->tv_freq % 16) * 100 / 16;
401         }
402         tuner_info("Tuner mode:      %s\n", p);
403         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
404         tuner_info("Standard:        0x%08llx\n", t->std);
405         if (t->mode != V4L2_TUNER_RADIO)
406                return;
407         if (t->has_signal) {
408                 tuner_info("Signal strength: %d\n", t->has_signal(client));
409         }
410         if (t->is_stereo) {
411                 tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
412         }
413 }
414
415 /* ---------------------------------------------------------------------- */
416
417 /* static var Used only in tuner_attach and tuner_probe */
418 static unsigned default_mode_mask;
419
420 /* During client attach, set_type is called by adapter's attach_inform callback.
421    set_type must then be completed by tuner_attach.
422  */
423 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
424 {
425         struct tuner *t;
426
427         client_template.adapter = adap;
428         client_template.addr = addr;
429
430         t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
431         if (NULL == t)
432                 return -ENOMEM;
433         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
434         i2c_set_clientdata(&t->i2c, t);
435         t->type = UNSET;
436         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
437         t->audmode = V4L2_TUNER_MODE_STEREO;
438         t->mode_mask = T_UNINITIALIZED;
439         if (tuner_debug_old) {
440                 tuner_debug = tuner_debug_old;
441                 printk(KERN_ERR "tuner: tuner_debug is deprecated and will be removed in 2.6.17.\n");
442                 printk(KERN_ERR "tuner: use the debug option instead.\n");
443         }
444
445         if (show_i2c) {
446                 unsigned char buffer[16];
447                 int i,rc;
448
449                 memset(buffer, 0, sizeof(buffer));
450                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
451                 tuner_info("I2C RECV = ");
452                 for (i=0;i<rc;i++)
453                         printk("%02x ",buffer[i]);
454                 printk("\n");
455         }
456         /* autodetection code based on the i2c addr */
457         if (!no_autodetect) {
458                 switch (addr) {
459                 case 0x42:
460                 case 0x43:
461                 case 0x4a:
462                 case 0x4b:
463                         /* If chip is not tda8290, don't register.
464                            since it can be tda9887*/
465                         if (tda8290_probe(&t->i2c) != 0) {
466                                 tuner_dbg("chip at addr %x is not a tda8290\n", addr);
467                                 kfree(t);
468                                 return 0;
469                         }
470                         break;
471                 case 0x60:
472                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
473                                 t->type = TUNER_TEA5767;
474                                 t->mode_mask = T_RADIO;
475                                 t->mode = T_STANDBY;
476                                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
477                                 default_mode_mask &= ~T_RADIO;
478
479                                 goto register_client;
480                         }
481                         break;
482                 }
483         }
484
485         /* Initializes only the first adapter found */
486         if (default_mode_mask != T_UNINITIALIZED) {
487                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
488                 t->mode_mask = default_mode_mask;
489                 t->tv_freq = 400 * 16; /* Sets freq to VHF High */
490                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
491                 default_mode_mask = T_UNINITIALIZED;
492         }
493
494         /* Should be just before return */
495 register_client:
496         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
497         i2c_attach_client (&t->i2c);
498         set_type (&t->i2c,t->type, t->mode_mask);
499         return 0;
500 }
501
502 static int tuner_probe(struct i2c_adapter *adap)
503 {
504         if (0 != addr) {
505                 normal_i2c[0] = addr;
506                 normal_i2c[1] = I2C_CLIENT_END;
507         }
508
509         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
510
511         if (adap->class & I2C_CLASS_TV_ANALOG)
512                 return i2c_probe(adap, &addr_data, tuner_attach);
513         return 0;
514 }
515
516 static int tuner_detach(struct i2c_client *client)
517 {
518         struct tuner *t = i2c_get_clientdata(client);
519         int err;
520
521         err = i2c_detach_client(&t->i2c);
522         if (err) {
523                 tuner_warn
524                     ("Client deregistration failed, client not detached.\n");
525                 return err;
526         }
527
528         kfree(t);
529         return 0;
530 }
531
532 /*
533  * Switch tuner to other mode. If tuner support both tv and radio,
534  * set another frequency to some value (This is needed for some pal
535  * tuners to avoid locking). Otherwise, just put second tuner in
536  * standby mode.
537  */
538
539 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
540 {
541         if (mode == t->mode)
542                 return 0;
543
544         t->mode = mode;
545
546         if (check_mode(t, cmd) == EINVAL) {
547                 t->mode = T_STANDBY;
548                 if (t->standby)
549                         t->standby (client);
550                 return EINVAL;
551         }
552         return 0;
553 }
554
555 #define switch_v4l2()   if (!t->using_v4l2) \
556                             tuner_dbg("switching to v4l2\n"); \
557                         t->using_v4l2 = 1;
558
559 static inline int check_v4l2(struct tuner *t)
560 {
561         if (t->using_v4l2) {
562                 tuner_dbg ("ignore v4l1 call\n");
563                 return EINVAL;
564         }
565         return 0;
566 }
567
568 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
569 {
570         struct tuner *t = i2c_get_clientdata(client);
571
572         if (tuner_debug>1)
573                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
574
575         switch (cmd) {
576         /* --- configuration --- */
577         case TUNER_SET_TYPE_ADDR:
578                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
579                                 ((struct tuner_setup *)arg)->type,
580                                 ((struct tuner_setup *)arg)->addr,
581                                 ((struct tuner_setup *)arg)->mode_mask);
582
583                 set_addr(client, (struct tuner_setup *)arg);
584                 break;
585         case AUDC_SET_RADIO:
586                 if (set_mode(client, t, V4L2_TUNER_RADIO, "AUDC_SET_RADIO")
587                                 == EINVAL)
588                         return 0;
589                 if (t->radio_freq)
590                         set_freq(client, t->radio_freq);
591                 break;
592         case TUNER_SET_STANDBY:
593                 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
594                         return 0;
595                 if (t->standby)
596                         t->standby (client);
597                 break;
598         case VIDIOCSAUDIO:
599                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
600                         return 0;
601                 if (check_v4l2(t) == EINVAL)
602                         return 0;
603
604                 /* Should be implemented, since bttv calls it */
605                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
606                 break;
607         /* --- v4l ioctls --- */
608         /* take care: bttv does userspace copying, we'll get a
609            kernel pointer here... */
610         case VIDIOCSCHAN:
611                 {
612                         static const v4l2_std_id map[] = {
613                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
614                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
615                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
616                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
617                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
618                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
619                         };
620                         struct video_channel *vc = arg;
621
622                         if (check_v4l2(t) == EINVAL)
623                                 return 0;
624
625                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
626                                 return 0;
627
628                         if (vc->norm < ARRAY_SIZE(map))
629                                 t->std = map[vc->norm];
630                         tuner_fixup_std(t);
631                         if (t->tv_freq)
632                                 set_tv_freq(client, t->tv_freq);
633                         return 0;
634                 }
635         case VIDIOCSFREQ:
636                 {
637                         unsigned long *v = arg;
638
639                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
640                                 return 0;
641                         if (check_v4l2(t) == EINVAL)
642                                 return 0;
643
644                         set_freq(client, *v);
645                         return 0;
646                 }
647         case VIDIOCGTUNER:
648                 {
649                         struct video_tuner *vt = arg;
650
651                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
652                                 return 0;
653                         if (check_v4l2(t) == EINVAL)
654                                 return 0;
655
656                         if (V4L2_TUNER_RADIO == t->mode) {
657                                 if (t->has_signal)
658                                         vt->signal = t->has_signal(client);
659                                 if (t->is_stereo) {
660                                         if (t->is_stereo(client))
661                                                 vt->flags |=
662                                                     VIDEO_TUNER_STEREO_ON;
663                                         else
664                                                 vt->flags &=
665                                                     ~VIDEO_TUNER_STEREO_ON;
666                                 }
667                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
668
669                                 vt->rangelow = radio_range[0] * 16000;
670                                 vt->rangehigh = radio_range[1] * 16000;
671
672                         } else {
673                                 vt->rangelow = tv_range[0] * 16;
674                                 vt->rangehigh = tv_range[1] * 16;
675                         }
676
677                         return 0;
678                 }
679         case VIDIOCGAUDIO:
680                 {
681                         struct video_audio *va = arg;
682
683                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
684                                 return 0;
685                         if (check_v4l2(t) == EINVAL)
686                                 return 0;
687
688                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
689                                 va->mode = t->is_stereo(client)
690                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
691                         return 0;
692                 }
693
694         case VIDIOC_S_STD:
695                 {
696                         v4l2_std_id *id = arg;
697
698                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
699                                         == EINVAL)
700                                 return 0;
701
702                         switch_v4l2();
703
704                         t->std = *id;
705                         tuner_fixup_std(t);
706                         if (t->tv_freq)
707                                 set_freq(client, t->tv_freq);
708                         break;
709                 }
710         case VIDIOC_S_FREQUENCY:
711                 {
712                         struct v4l2_frequency *f = arg;
713
714                         switch_v4l2();
715                         if ((V4L2_TUNER_RADIO == f->type && V4L2_TUNER_RADIO != t->mode)
716                                 || (V4L2_TUNER_DIGITAL_TV == f->type
717                                         && V4L2_TUNER_DIGITAL_TV != t->mode)) {
718                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
719                                             == EINVAL)
720                                         return 0;
721                         }
722                         set_freq(client,f->frequency);
723
724                         break;
725                 }
726         case VIDIOC_G_FREQUENCY:
727                 {
728                         struct v4l2_frequency *f = arg;
729
730                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
731                                 return 0;
732                         switch_v4l2();
733                         f->type = t->mode;
734                         f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
735                                 t->radio_freq : t->tv_freq;
736                         break;
737                 }
738         case VIDIOC_G_TUNER:
739                 {
740                         struct v4l2_tuner *tuner = arg;
741
742                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
743                                 return 0;
744                         switch_v4l2();
745
746                         tuner->type = t->mode;
747                         if (t->mode != V4L2_TUNER_RADIO) {
748                                 tuner->rangelow = tv_range[0] * 16;
749                                 tuner->rangehigh = tv_range[1] * 16;
750                                 break;
751                         }
752
753                         /* radio mode */
754                         if (t->has_signal)
755                                 tuner->signal = t->has_signal(client);
756
757                         tuner->rxsubchans =
758                                 V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
759                         if (t->is_stereo) {
760                                 tuner->rxsubchans = t->is_stereo(client) ?
761                                         V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
762                         }
763
764                         tuner->capability |=
765                             V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
766                         tuner->audmode = t->audmode;
767                         tuner->rangelow = radio_range[0] * 16000;
768                         tuner->rangehigh = radio_range[1] * 16000;
769                         break;
770                 }
771         case VIDIOC_S_TUNER:
772                 {
773                         struct v4l2_tuner *tuner = arg;
774
775                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
776                                 return 0;
777
778                         switch_v4l2();
779
780                         /* do nothing unless we're a radio tuner */
781                         if (t->mode != V4L2_TUNER_RADIO)
782                                 break;
783                         t->audmode = tuner->audmode;
784                         set_radio_freq(client, t->radio_freq);
785                         break;
786                 }
787         case VIDIOC_LOG_STATUS:
788                 tuner_status(client);
789                 break;
790         }
791
792         return 0;
793 }
794
795 static int tuner_suspend(struct device *dev, pm_message_t state)
796 {
797         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
798         struct tuner *t = i2c_get_clientdata (c);
799
800         tuner_dbg ("suspend\n");
801         /* FIXME: power down ??? */
802         return 0;
803 }
804
805 static int tuner_resume(struct device *dev)
806 {
807         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
808         struct tuner *t = i2c_get_clientdata (c);
809
810         tuner_dbg ("resume\n");
811         if (V4L2_TUNER_RADIO == t->mode) {
812                 if (t->radio_freq)
813                         set_freq(c, t->radio_freq);
814         } else {
815                 if (t->tv_freq)
816                         set_freq(c, t->tv_freq);
817         }
818         return 0;
819 }
820
821 /* ----------------------------------------------------------------------- */
822
823 static struct i2c_driver driver = {
824         .id = I2C_DRIVERID_TUNER,
825         .attach_adapter = tuner_probe,
826         .detach_client = tuner_detach,
827         .command = tuner_command,
828         .driver = {
829                 .name    = "tuner",
830                 .suspend = tuner_suspend,
831                 .resume  = tuner_resume,
832         },
833 };
834 static struct i2c_client client_template = {
835         .name = "(tuner unset)",
836         .driver = &driver,
837 };
838
839 static int __init tuner_init_module(void)
840 {
841         return i2c_add_driver(&driver);
842 }
843
844 static void __exit tuner_cleanup_module(void)
845 {
846         i2c_del_driver(&driver);
847 }
848
849 module_init(tuner_init_module);
850 module_exit(tuner_cleanup_module);
851
852 /*
853  * Overrides for Emacs so that we follow Linus's tabbing style.
854  * ---------------------------------------------------------------------------
855  * Local variables:
856  * c-basic-offset: 8
857  * End:
858  */