Merge master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / drivers / media / video / tda9887.c
1 #include <linux/module.h>
2 #include <linux/moduleparam.h>
3 #include <linux/kernel.h>
4 #include <linux/i2c.h>
5 #include <linux/types.h>
6 #include <linux/videodev.h>
7 #include <linux/init.h>
8 #include <linux/errno.h>
9 #include <linux/slab.h>
10 #include <linux/delay.h>
11
12 #include <media/v4l2-common.h>
13 #include <media/tuner.h>
14
15
16 /* Chips:
17    TDA9885 (PAL, NTSC)
18    TDA9886 (PAL, SECAM, NTSC)
19    TDA9887 (PAL, SECAM, NTSC, FM Radio)
20
21    Used as part of several tuners
22 */
23
24 #define tda9887_info(fmt, arg...) do {\
25         printk(KERN_INFO "%s %d-%04x: " fmt, t->i2c.name, \
26                         i2c_adapter_id(t->i2c.adapter), t->i2c.addr , ##arg); } while (0)
27 #define tda9887_dbg(fmt, arg...) do {\
28         if (tuner_debug) \
29                 printk(KERN_INFO "%s %d-%04x: " fmt, t->i2c.name, \
30                         i2c_adapter_id(t->i2c.adapter), t->i2c.addr , ##arg); } while (0)
31
32
33 /* ---------------------------------------------------------------------- */
34
35 #define UNSET       (-1U)
36
37 struct tvnorm {
38         v4l2_std_id       std;
39         char              *name;
40         unsigned char     b;
41         unsigned char     c;
42         unsigned char     e;
43 };
44
45 /* ---------------------------------------------------------------------- */
46
47 //
48 // TDA defines
49 //
50
51 //// first reg (b)
52 #define cVideoTrapBypassOFF     0x00    // bit b0
53 #define cVideoTrapBypassON      0x01    // bit b0
54
55 #define cAutoMuteFmInactive     0x00    // bit b1
56 #define cAutoMuteFmActive       0x02    // bit b1
57
58 #define cIntercarrier           0x00    // bit b2
59 #define cQSS                    0x04    // bit b2
60
61 #define cPositiveAmTV           0x00    // bit b3:4
62 #define cFmRadio                0x08    // bit b3:4
63 #define cNegativeFmTV           0x10    // bit b3:4
64
65
66 #define cForcedMuteAudioON      0x20    // bit b5
67 #define cForcedMuteAudioOFF     0x00    // bit b5
68
69 #define cOutputPort1Active      0x00    // bit b6
70 #define cOutputPort1Inactive    0x40    // bit b6
71
72 #define cOutputPort2Active      0x00    // bit b7
73 #define cOutputPort2Inactive    0x80    // bit b7
74
75
76 //// second reg (c)
77 #define cDeemphasisOFF          0x00    // bit c5
78 #define cDeemphasisON           0x20    // bit c5
79
80 #define cDeemphasis75           0x00    // bit c6
81 #define cDeemphasis50           0x40    // bit c6
82
83 #define cAudioGain0             0x00    // bit c7
84 #define cAudioGain6             0x80    // bit c7
85
86 #define cTopMask                0x1f    // bit c0:4
87 #define cTopDefault             0x10    // bit c0:4
88
89 //// third reg (e)
90 #define cAudioIF_4_5             0x00    // bit e0:1
91 #define cAudioIF_5_5             0x01    // bit e0:1
92 #define cAudioIF_6_0             0x02    // bit e0:1
93 #define cAudioIF_6_5             0x03    // bit e0:1
94
95
96 #define cVideoIF_58_75           0x00    // bit e2:4
97 #define cVideoIF_45_75           0x04    // bit e2:4
98 #define cVideoIF_38_90           0x08    // bit e2:4
99 #define cVideoIF_38_00           0x0C    // bit e2:4
100 #define cVideoIF_33_90           0x10    // bit e2:4
101 #define cVideoIF_33_40           0x14    // bit e2:4
102 #define cRadioIF_45_75           0x18    // bit e2:4
103 #define cRadioIF_38_90           0x1C    // bit e2:4
104
105
106 #define cTunerGainNormal         0x00    // bit e5
107 #define cTunerGainLow            0x20    // bit e5
108
109 #define cGating_18               0x00    // bit e6
110 #define cGating_36               0x40    // bit e6
111
112 #define cAgcOutON                0x80    // bit e7
113 #define cAgcOutOFF               0x00    // bit e7
114
115 /* ---------------------------------------------------------------------- */
116
117 static struct tvnorm tvnorms[] = {
118         {
119                 .std   = V4L2_STD_PAL_BG | V4L2_STD_PAL_H | V4L2_STD_PAL_N,
120                 .name  = "PAL-BGHN",
121                 .b     = ( cNegativeFmTV  |
122                            cQSS           ),
123                 .c     = ( cDeemphasisON  |
124                            cDeemphasis50  |
125                            cTopDefault),
126                 .e     = ( cGating_36     |
127                            cAudioIF_5_5   |
128                            cVideoIF_38_90 ),
129         },{
130                 .std   = V4L2_STD_PAL_I,
131                 .name  = "PAL-I",
132                 .b     = ( cNegativeFmTV  |
133                            cQSS           ),
134                 .c     = ( cDeemphasisON  |
135                            cDeemphasis50  |
136                            cTopDefault),
137                 .e     = ( cGating_36     |
138                            cAudioIF_6_0   |
139                            cVideoIF_38_90 ),
140         },{
141                 .std   = V4L2_STD_PAL_DK,
142                 .name  = "PAL-DK",
143                 .b     = ( cNegativeFmTV  |
144                            cQSS           ),
145                 .c     = ( cDeemphasisON  |
146                            cDeemphasis50  |
147                            cTopDefault),
148                 .e     = ( cGating_36     |
149                            cAudioIF_6_5   |
150                            cVideoIF_38_90 ),
151         },{
152                 .std   = V4L2_STD_PAL_M | V4L2_STD_PAL_Nc,
153                 .name  = "PAL-M/Nc",
154                 .b     = ( cNegativeFmTV  |
155                            cQSS           ),
156                 .c     = ( cDeemphasisON  |
157                            cDeemphasis75  |
158                            cTopDefault),
159                 .e     = ( cGating_36     |
160                            cAudioIF_4_5   |
161                            cVideoIF_45_75 ),
162         },{
163                 .std   = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
164                 .name  = "SECAM-BGH",
165                 .b     = ( cPositiveAmTV  |
166                            cQSS           ),
167                 .c     = ( cTopDefault),
168                 .e     = ( cGating_36     |
169                            cAudioIF_5_5   |
170                            cVideoIF_38_90 ),
171         },{
172                 .std   = V4L2_STD_SECAM_L,
173                 .name  = "SECAM-L",
174                 .b     = ( cPositiveAmTV  |
175                            cQSS           ),
176                 .c     = ( cTopDefault),
177                 .e     = ( cGating_36     |
178                            cAudioIF_6_5   |
179                            cVideoIF_38_90 ),
180         },{
181                 .std   = V4L2_STD_SECAM_LC,
182                 .name  = "SECAM-L'",
183                 .b     = ( cOutputPort2Inactive |
184                            cPositiveAmTV  |
185                            cQSS           ),
186                 .c     = ( cTopDefault),
187                 .e     = ( cGating_36     |
188                            cAudioIF_6_5   |
189                            cVideoIF_33_90 ),
190         },{
191                 .std   = V4L2_STD_SECAM_DK,
192                 .name  = "SECAM-DK",
193                 .b     = ( cNegativeFmTV  |
194                            cQSS           ),
195                 .c     = ( cDeemphasisON  |
196                            cDeemphasis50  |
197                            cTopDefault),
198                 .e     = ( cGating_36     |
199                            cAudioIF_6_5   |
200                            cVideoIF_38_90 ),
201         },{
202                 .std   = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
203                 .name  = "NTSC-M",
204                 .b     = ( cNegativeFmTV  |
205                            cQSS           ),
206                 .c     = ( cDeemphasisON  |
207                            cDeemphasis75  |
208                            cTopDefault),
209                 .e     = ( cGating_36     |
210                            cAudioIF_4_5   |
211                            cVideoIF_45_75 ),
212         },{
213                 .std   = V4L2_STD_NTSC_M_JP,
214                 .name  = "NTSC-M-JP",
215                 .b     = ( cNegativeFmTV  |
216                            cQSS           ),
217                 .c     = ( cDeemphasisON  |
218                            cDeemphasis50  |
219                            cTopDefault),
220                 .e     = ( cGating_36     |
221                            cAudioIF_4_5   |
222                            cVideoIF_58_75 ),
223         }
224 };
225
226 static struct tvnorm radio_stereo = {
227         .name = "Radio Stereo",
228         .b    = ( cFmRadio       |
229                   cQSS           ),
230         .c    = ( cDeemphasisOFF |
231                   cAudioGain6    |
232                   cTopDefault),
233         .e    = ( cTunerGainLow  |
234                   cAudioIF_5_5   |
235                   cRadioIF_38_90 ),
236 };
237
238 static struct tvnorm radio_mono = {
239         .name = "Radio Mono",
240         .b    = ( cFmRadio       |
241                   cQSS           ),
242         .c    = ( cDeemphasisON  |
243                   cDeemphasis75  |
244                   cTopDefault),
245         .e    = ( cTunerGainLow  |
246                   cAudioIF_5_5   |
247                   cRadioIF_38_90 ),
248 };
249
250 /* ---------------------------------------------------------------------- */
251
252 static void dump_read_message(struct tuner *t, unsigned char *buf)
253 {
254         static char *afc[16] = {
255                 "- 12.5 kHz",
256                 "- 37.5 kHz",
257                 "- 62.5 kHz",
258                 "- 87.5 kHz",
259                 "-112.5 kHz",
260                 "-137.5 kHz",
261                 "-162.5 kHz",
262                 "-187.5 kHz [min]",
263                 "+187.5 kHz [max]",
264                 "+162.5 kHz",
265                 "+137.5 kHz",
266                 "+112.5 kHz",
267                 "+ 87.5 kHz",
268                 "+ 62.5 kHz",
269                 "+ 37.5 kHz",
270                 "+ 12.5 kHz",
271         };
272         tda9887_info("read: 0x%2x\n", buf[0]);
273         tda9887_info("  after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no");
274         tda9887_info("  afc            : %s\n", afc[(buf[0] >> 1) & 0x0f]);
275         tda9887_info("  fmif level     : %s\n", (buf[0] & 0x20) ? "high" : "low");
276         tda9887_info("  afc window     : %s\n", (buf[0] & 0x40) ? "in" : "out");
277         tda9887_info("  vfi level      : %s\n", (buf[0] & 0x80) ? "high" : "low");
278 }
279
280 static void dump_write_message(struct tuner *t, unsigned char *buf)
281 {
282         static char *sound[4] = {
283                 "AM/TV",
284                 "FM/radio",
285                 "FM/TV",
286                 "FM/radio"
287         };
288         static char *adjust[32] = {
289                 "-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9",
290                 "-8",  "-7",  "-6",  "-5",  "-4",  "-3",  "-2",  "-1",
291                 "0",   "+1",  "+2",  "+3",  "+4",  "+5",  "+6",  "+7",
292                 "+8",  "+9",  "+10", "+11", "+12", "+13", "+14", "+15"
293         };
294         static char *deemph[4] = {
295                 "no", "no", "75", "50"
296         };
297         static char *carrier[4] = {
298                 "4.5 MHz",
299                 "5.5 MHz",
300                 "6.0 MHz",
301                 "6.5 MHz / AM"
302         };
303         static char *vif[8] = {
304                 "58.75 MHz",
305                 "45.75 MHz",
306                 "38.9 MHz",
307                 "38.0 MHz",
308                 "33.9 MHz",
309                 "33.4 MHz",
310                 "45.75 MHz + pin13",
311                 "38.9 MHz + pin13",
312         };
313         static char *rif[4] = {
314                 "44 MHz",
315                 "52 MHz",
316                 "52 MHz",
317                 "44 MHz",
318         };
319
320         tda9887_info("write: byte B 0x%02x\n",buf[1]);
321         tda9887_info("  B0   video mode      : %s\n",
322                (buf[1] & 0x01) ? "video trap" : "sound trap");
323         tda9887_info("  B1   auto mute fm    : %s\n",
324                (buf[1] & 0x02) ? "yes" : "no");
325         tda9887_info("  B2   carrier mode    : %s\n",
326                (buf[1] & 0x04) ? "QSS" : "Intercarrier");
327         tda9887_info("  B3-4 tv sound/radio  : %s\n",
328                sound[(buf[1] & 0x18) >> 3]);
329         tda9887_info("  B5   force mute audio: %s\n",
330                (buf[1] & 0x20) ? "yes" : "no");
331         tda9887_info("  B6   output port 1   : %s\n",
332                (buf[1] & 0x40) ? "high (inactive)" : "low (active)");
333         tda9887_info("  B7   output port 2   : %s\n",
334                (buf[1] & 0x80) ? "high (inactive)" : "low (active)");
335
336         tda9887_info("write: byte C 0x%02x\n",buf[2]);
337         tda9887_info("  C0-4 top adjustment  : %s dB\n", adjust[buf[2] & 0x1f]);
338         tda9887_info("  C5-6 de-emphasis     : %s\n", deemph[(buf[2] & 0x60) >> 5]);
339         tda9887_info("  C7   audio gain      : %s\n",
340                (buf[2] & 0x80) ? "-6" : "0");
341
342         tda9887_info("write: byte E 0x%02x\n",buf[3]);
343         tda9887_info("  E0-1 sound carrier   : %s\n",
344                carrier[(buf[3] & 0x03)]);
345         tda9887_info("  E6   l pll gating   : %s\n",
346                (buf[3] & 0x40) ? "36" : "13");
347
348         if (buf[1] & 0x08) {
349                 /* radio */
350                 tda9887_info("  E2-4 video if        : %s\n",
351                        rif[(buf[3] & 0x0c) >> 2]);
352                 tda9887_info("  E7   vif agc output  : %s\n",
353                        (buf[3] & 0x80)
354                        ? ((buf[3] & 0x10) ? "fm-agc radio" : "sif-agc radio")
355                        : "fm radio carrier afc");
356         } else {
357                 /* video */
358                 tda9887_info("  E2-4 video if        : %s\n",
359                        vif[(buf[3] & 0x1c) >> 2]);
360                 tda9887_info("  E5   tuner gain      : %s\n",
361                        (buf[3] & 0x80)
362                        ? ((buf[3] & 0x20) ? "external" : "normal")
363                        : ((buf[3] & 0x20) ? "minimum"  : "normal"));
364                 tda9887_info("  E7   vif agc output  : %s\n",
365                        (buf[3] & 0x80)
366                        ? ((buf[3] & 0x20)
367                           ? "pin3 port, pin22 vif agc out"
368                           : "pin22 port, pin3 vif acg ext in")
369                        : "pin3+pin22 port");
370         }
371         tda9887_info("--\n");
372 }
373
374 /* ---------------------------------------------------------------------- */
375
376 static int tda9887_set_tvnorm(struct tuner *t, char *buf)
377 {
378         struct tvnorm *norm = NULL;
379         int i;
380
381         if (t->mode == V4L2_TUNER_RADIO) {
382                 if (t->audmode == V4L2_TUNER_MODE_MONO)
383                         norm = &radio_mono;
384                 else
385                         norm = &radio_stereo;
386         } else {
387                 for (i = 0; i < ARRAY_SIZE(tvnorms); i++) {
388                         if (tvnorms[i].std & t->std) {
389                                 norm = tvnorms+i;
390                                 break;
391                         }
392                 }
393         }
394         if (NULL == norm) {
395                 tda9887_dbg("Unsupported tvnorm entry - audio muted\n");
396                 return -1;
397         }
398
399         tda9887_dbg("configure for: %s\n",norm->name);
400         buf[1] = norm->b;
401         buf[2] = norm->c;
402         buf[3] = norm->e;
403         return 0;
404 }
405
406 static unsigned int port1  = UNSET;
407 static unsigned int port2  = UNSET;
408 static unsigned int qss    = UNSET;
409 static unsigned int adjust = UNSET;
410
411 module_param(port1, int, 0644);
412 module_param(port2, int, 0644);
413 module_param(qss, int, 0644);
414 module_param(adjust, int, 0644);
415
416 static int tda9887_set_insmod(struct tuner *t, char *buf)
417 {
418         if (UNSET != port1) {
419                 if (port1)
420                         buf[1] |= cOutputPort1Inactive;
421                 else
422                         buf[1] &= ~cOutputPort1Inactive;
423         }
424         if (UNSET != port2) {
425                 if (port2)
426                         buf[1] |= cOutputPort2Inactive;
427                 else
428                         buf[1] &= ~cOutputPort2Inactive;
429         }
430
431         if (UNSET != qss) {
432                 if (qss)
433                         buf[1] |= cQSS;
434                 else
435                         buf[1] &= ~cQSS;
436         }
437
438         if (adjust >= 0x00 && adjust < 0x20) {
439                 buf[2] &= ~cTopMask;
440                 buf[2] |= adjust;
441         }
442         return 0;
443 }
444
445 static int tda9887_set_config(struct tuner *t, char *buf)
446 {
447         if (t->tda9887_config & TDA9887_PORT1_ACTIVE)
448                 buf[1] &= ~cOutputPort1Inactive;
449         if (t->tda9887_config & TDA9887_PORT1_INACTIVE)
450                 buf[1] |= cOutputPort1Inactive;
451         if (t->tda9887_config & TDA9887_PORT2_ACTIVE)
452                 buf[1] &= ~cOutputPort2Inactive;
453         if (t->tda9887_config & TDA9887_PORT2_INACTIVE)
454                 buf[1] |= cOutputPort2Inactive;
455
456         if (t->tda9887_config & TDA9887_QSS)
457                 buf[1] |= cQSS;
458         if (t->tda9887_config & TDA9887_INTERCARRIER)
459                 buf[1] &= ~cQSS;
460
461         if (t->tda9887_config & TDA9887_AUTOMUTE)
462                 buf[1] |= cAutoMuteFmActive;
463         if (t->tda9887_config & TDA9887_DEEMPHASIS_MASK) {
464                 buf[2] &= ~0x60;
465                 switch (t->tda9887_config & TDA9887_DEEMPHASIS_MASK) {
466                 case TDA9887_DEEMPHASIS_NONE:
467                         buf[2] |= cDeemphasisOFF;
468                         break;
469                 case TDA9887_DEEMPHASIS_50:
470                         buf[2] |= cDeemphasisON | cDeemphasis50;
471                         break;
472                 case TDA9887_DEEMPHASIS_75:
473                         buf[2] |= cDeemphasisON | cDeemphasis75;
474                         break;
475                 }
476         }
477         if (t->tda9887_config & TDA9887_TOP_SET) {
478                 buf[2] &= ~cTopMask;
479                 buf[2] |= (t->tda9887_config >> 8) & cTopMask;
480         }
481         if ((t->tda9887_config & TDA9887_INTERCARRIER_NTSC) && (t->std & V4L2_STD_NTSC))
482                 buf[1] &= ~cQSS;
483         return 0;
484 }
485
486 /* ---------------------------------------------------------------------- */
487
488 static int tda9887_status(struct tuner *t)
489 {
490         unsigned char buf[1];
491         int rc;
492
493         memset(buf,0,sizeof(buf));
494         if (1 != (rc = i2c_master_recv(&t->i2c,buf,1)))
495                 tda9887_info("i2c i/o error: rc == %d (should be 1)\n",rc);
496         dump_read_message(t, buf);
497         return 0;
498 }
499
500 static void tda9887_configure(struct i2c_client *client)
501 {
502         struct tuner *t = i2c_get_clientdata(client);
503         int rc;
504
505         memset(t->tda9887_data,0,sizeof(t->tda9887_data));
506         tda9887_set_tvnorm(t,t->tda9887_data);
507
508         /* A note on the port settings:
509            These settings tend to depend on the specifics of the board.
510            By default they are set to inactive (bit value 1) by this driver,
511            overwriting any changes made by the tvnorm. This means that it
512            is the responsibility of the module using the tda9887 to set
513            these values in case of changes in the tvnorm.
514            In many cases port 2 should be made active (0) when selecting
515            SECAM-L, and port 2 should remain inactive (1) for SECAM-L'.
516
517            For the other standards the tda9887 application note says that
518            the ports should be set to active (0), but, again, that may
519            differ depending on the precise hardware configuration.
520          */
521         t->tda9887_data[1] |= cOutputPort1Inactive;
522         t->tda9887_data[1] |= cOutputPort2Inactive;
523
524         tda9887_set_config(t,t->tda9887_data);
525         tda9887_set_insmod(t,t->tda9887_data);
526
527         if (t->mode == T_STANDBY) {
528                 t->tda9887_data[1] |= cForcedMuteAudioON;
529         }
530
531         tda9887_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n",
532                 t->tda9887_data[1],t->tda9887_data[2],t->tda9887_data[3]);
533         if (tuner_debug > 1)
534                 dump_write_message(t, t->tda9887_data);
535
536         if (4 != (rc = i2c_master_send(&t->i2c,t->tda9887_data,4)))
537                 tda9887_info("i2c i/o error: rc == %d (should be 4)\n",rc);
538
539         if (tuner_debug > 2) {
540                 msleep_interruptible(1000);
541                 tda9887_status(t);
542         }
543 }
544
545 /* ---------------------------------------------------------------------- */
546
547 static void tda9887_tuner_status(struct i2c_client *client)
548 {
549         struct tuner *t = i2c_get_clientdata(client);
550         tda9887_info("Data bytes: b=0x%02x c=0x%02x e=0x%02x\n", t->tda9887_data[1], t->tda9887_data[2], t->tda9887_data[3]);
551 }
552
553 static int tda9887_get_afc(struct i2c_client *client)
554 {
555         struct tuner *t = i2c_get_clientdata(client);
556         static int AFC_BITS_2_kHz[] = {
557                 -12500,  -37500,  -62500,  -97500,
558                 -112500, -137500, -162500, -187500,
559                 187500,  162500,  137500,  112500,
560                 97500 ,  62500,   37500 ,  12500
561         };
562         int afc=0;
563         __u8 reg = 0;
564
565         if (1 == i2c_master_recv(&t->i2c,&reg,1))
566                 afc = AFC_BITS_2_kHz[(reg>>1)&0x0f];
567
568         return afc;
569 }
570
571 static void tda9887_standby(struct i2c_client *client)
572 {
573         tda9887_configure(client);
574 }
575
576 static void tda9887_set_freq(struct i2c_client *client, unsigned int freq)
577 {
578         tda9887_configure(client);
579 }
580
581 int tda9887_tuner_init(struct i2c_client *c)
582 {
583         struct tuner *t = i2c_get_clientdata(c);
584
585         strlcpy(c->name, "tda9887", sizeof(c->name));
586
587         tda9887_info("tda988[5/6/7] found @ 0x%x (%s)\n", t->i2c.addr,
588                                                 t->i2c.driver->driver.name);
589
590         t->set_tv_freq = tda9887_set_freq;
591         t->set_radio_freq = tda9887_set_freq;
592         t->standby = tda9887_standby;
593         t->tuner_status=tda9887_tuner_status;
594         t->get_afc=tda9887_get_afc;
595
596         return 0;
597 }
598
599 /*
600  * Overrides for Emacs so that we follow Linus's tabbing style.
601  * ---------------------------------------------------------------------------
602  * Local variables:
603  * c-basic-offset: 8
604  * End:
605  */