Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6] / drivers / media / video / tuner-simple.c
1 /*
2  *
3  * i2c tv tuner chip device driver
4  * controls all those simple 4-control-bytes style tuners.
5  */
6 #include <linux/delay.h>
7 #include <linux/i2c.h>
8 #include <linux/videodev.h>
9 #include <media/tuner.h>
10 #include <media/v4l2-common.h>
11
12 static int offset = 0;
13 module_param(offset, int, 0664);
14 MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
15
16 /* ---------------------------------------------------------------------- */
17
18 /* tv standard selection for Temic 4046 FM5
19    this value takes the low bits of control byte 2
20    from datasheet Rev.01, Feb.00
21      standard     BG      I       L       L2      D
22      picture IF   38.9    38.9    38.9    33.95   38.9
23      sound 1      33.4    32.9    32.4    40.45   32.4
24      sound 2      33.16
25      NICAM        33.05   32.348  33.05           33.05
26  */
27 #define TEMIC_SET_PAL_I         0x05
28 #define TEMIC_SET_PAL_DK        0x09
29 #define TEMIC_SET_PAL_L         0x0a // SECAM ?
30 #define TEMIC_SET_PAL_L2        0x0b // change IF !
31 #define TEMIC_SET_PAL_BG        0x0c
32
33 /* tv tuner system standard selection for Philips FQ1216ME
34    this value takes the low bits of control byte 2
35    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
36      standard           BG      DK      I       L       L`
37      picture carrier    38.90   38.90   38.90   38.90   33.95
38      colour             34.47   34.47   34.47   34.47   38.38
39      sound 1            33.40   32.40   32.90   32.40   40.45
40      sound 2            33.16   -       -       -       -
41      NICAM              33.05   33.05   32.35   33.05   39.80
42  */
43 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
44 #define PHILIPS_SET_PAL_BGDK    0x09
45 #define PHILIPS_SET_PAL_L2      0x0a
46 #define PHILIPS_SET_PAL_L       0x0b
47
48 /* system switching for Philips FI1216MF MK2
49    from datasheet "1996 Jul 09",
50     standard         BG     L      L'
51     picture carrier  38.90  38.90  33.95
52     colour           34.47  34.37  38.38
53     sound 1          33.40  32.40  40.45
54     sound 2          33.16  -      -
55     NICAM            33.05  33.05  39.80
56  */
57 #define PHILIPS_MF_SET_BG       0x01 /* Bit 2 must be zero, Bit 3 is system output */
58 #define PHILIPS_MF_SET_PAL_L    0x03 // France
59 #define PHILIPS_MF_SET_PAL_L2   0x02 // L'
60
61 /* Control byte */
62
63 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
64 #define TUNER_RATIO_SELECT_50   0x00
65 #define TUNER_RATIO_SELECT_32   0x02
66 #define TUNER_RATIO_SELECT_166  0x04
67 #define TUNER_RATIO_SELECT_62   0x06
68
69 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
70
71 /* Status byte */
72
73 #define TUNER_POR         0x80
74 #define TUNER_FL          0x40
75 #define TUNER_MODE        0x38
76 #define TUNER_AFC         0x07
77 #define TUNER_SIGNAL      0x07
78 #define TUNER_STEREO      0x10
79
80 #define TUNER_PLL_LOCKED   0x40
81 #define TUNER_STEREO_MK3   0x04
82
83 /* ---------------------------------------------------------------------- */
84
85 static int tuner_getstatus(struct i2c_client *c)
86 {
87         unsigned char byte;
88
89         if (1 != i2c_master_recv(c,&byte,1))
90                 return 0;
91
92         return byte;
93 }
94
95 static int tuner_signal(struct i2c_client *c)
96 {
97         return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
98 }
99
100 static int tuner_stereo(struct i2c_client *c)
101 {
102         int stereo, status;
103         struct tuner *t = i2c_get_clientdata(c);
104
105         status = tuner_getstatus (c);
106
107         switch (t->type) {
108                 case TUNER_PHILIPS_FM1216ME_MK3:
109                 case TUNER_PHILIPS_FM1236_MK3:
110                 case TUNER_PHILIPS_FM1256_IH3:
111                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
112                         break;
113                 default:
114                         stereo = status & TUNER_STEREO;
115         }
116
117         return stereo;
118 }
119
120
121 /* ---------------------------------------------------------------------- */
122
123 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
124 {
125         struct tuner *t = i2c_get_clientdata(c);
126         u8 config, cb, tuneraddr;
127         u16 div;
128         struct tunertype *tun;
129         u8 buffer[4];
130         int rc, IFPCoff, i, j;
131         enum param_type desired_type;
132         struct tuner_params *params;
133
134         tun = &tuners[t->type];
135
136         /* IFPCoff = Video Intermediate Frequency - Vif:
137                 940  =16*58.75  NTSC/J (Japan)
138                 732  =16*45.75  M/N STD
139                 704  =16*44     ATSC (at DVB code)
140                 632  =16*39.50  I U.K.
141                 622.4=16*38.90  B/G D/K I, L STD
142                 592  =16*37.00  D China
143                 590  =16.36.875 B Australia
144                 543.2=16*33.95  L' STD
145                 171.2=16*10.70  FM Radio (at set_radio_freq)
146         */
147
148         if (t->std == V4L2_STD_NTSC_M_JP) {
149                 IFPCoff      = 940;
150                 desired_type = TUNER_PARAM_TYPE_NTSC;
151         } else if ((t->std & V4L2_STD_MN) &&
152                   !(t->std & ~V4L2_STD_MN)) {
153                 IFPCoff      = 732;
154                 desired_type = TUNER_PARAM_TYPE_NTSC;
155         } else if (t->std == V4L2_STD_SECAM_LC) {
156                 IFPCoff      = 543;
157                 desired_type = TUNER_PARAM_TYPE_SECAM;
158         } else {
159                 IFPCoff      = 623;
160                 desired_type = TUNER_PARAM_TYPE_PAL;
161         }
162
163         for (j = 0; j < tun->count-1; j++) {
164                 if (desired_type != tun->params[j].type)
165                         continue;
166                 break;
167         }
168         /* use default tuner_params if desired_type not available */
169         if (desired_type != tun->params[j].type) {
170                 tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
171                           IFPCoff,t->type);
172                 j = 0;
173         }
174         params = &tun->params[j];
175
176         for (i = 0; i < params->count; i++) {
177                 if (freq > params->ranges[i].limit)
178                         continue;
179                 break;
180         }
181         if (i == params->count) {
182                 tuner_dbg("TV frequency out of range (%d > %d)",
183                                 freq, params->ranges[i - 1].limit);
184                 freq = params->ranges[--i].limit;
185         }
186         config = params->ranges[i].config;
187         cb     = params->ranges[i].cb;
188         /*  i == 0 -> VHF_LO
189          *  i == 1 -> VHF_HI
190          *  i == 2 -> UHF     */
191         tuner_dbg("tv: param %d, range %d\n",j,i);
192
193         div=freq + IFPCoff + offset;
194
195         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
196                                         freq / 16, freq % 16 * 100 / 16,
197                                         IFPCoff / 16, IFPCoff % 16 * 100 / 16,
198                                         offset / 16, offset % 16 * 100 / 16,
199                                         div);
200
201         /* tv norm specific stuff for multi-norm tuners */
202         switch (t->type) {
203         case TUNER_PHILIPS_SECAM: // FI1216MF
204                 /* 0x01 -> ??? no change ??? */
205                 /* 0x02 -> PAL BDGHI / SECAM L */
206                 /* 0x04 -> ??? PAL others / SECAM others ??? */
207                 cb &= ~0x02;
208                 if (t->std & V4L2_STD_SECAM)
209                         cb |= 0x02;
210                 break;
211
212         case TUNER_TEMIC_4046FM5:
213                 cb &= ~0x0f;
214
215                 if (t->std & V4L2_STD_PAL_BG) {
216                         cb |= TEMIC_SET_PAL_BG;
217
218                 } else if (t->std & V4L2_STD_PAL_I) {
219                         cb |= TEMIC_SET_PAL_I;
220
221                 } else if (t->std & V4L2_STD_PAL_DK) {
222                         cb |= TEMIC_SET_PAL_DK;
223
224                 } else if (t->std & V4L2_STD_SECAM_L) {
225                         cb |= TEMIC_SET_PAL_L;
226
227                 }
228                 break;
229
230         case TUNER_PHILIPS_FQ1216ME:
231                 cb &= ~0x0f;
232
233                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
234                         cb |= PHILIPS_SET_PAL_BGDK;
235
236                 } else if (t->std & V4L2_STD_PAL_I) {
237                         cb |= PHILIPS_SET_PAL_I;
238
239                 } else if (t->std & V4L2_STD_SECAM_L) {
240                         cb |= PHILIPS_SET_PAL_L;
241
242                 }
243                 break;
244
245         case TUNER_PHILIPS_ATSC:
246                 /* 0x00 -> ATSC antenna input 1 */
247                 /* 0x01 -> ATSC antenna input 2 */
248                 /* 0x02 -> NTSC antenna input 1 */
249                 /* 0x03 -> NTSC antenna input 2 */
250                 cb &= ~0x03;
251                 if (!(t->std & V4L2_STD_ATSC))
252                         cb |= 2;
253                 /* FIXME: input */
254                 break;
255
256         case TUNER_MICROTUNE_4042FI5:
257                 /* Set the charge pump for fast tuning */
258                 config |= TUNER_CHARGE_PUMP;
259                 break;
260
261         case TUNER_PHILIPS_TUV1236D:
262                 /* 0x40 -> ATSC antenna input 1 */
263                 /* 0x48 -> ATSC antenna input 2 */
264                 /* 0x00 -> NTSC antenna input 1 */
265                 /* 0x08 -> NTSC antenna input 2 */
266                 buffer[0] = 0x14;
267                 buffer[1] = 0x00;
268                 buffer[2] = 0x17;
269                 buffer[3] = 0x00;
270                 cb &= ~0x40;
271                 if (t->std & V4L2_STD_ATSC) {
272                         cb |= 0x40;
273                         buffer[1] = 0x04;
274                 }
275                 /* set to the correct mode (analog or digital) */
276                 tuneraddr = c->addr;
277                 c->addr = 0x0a;
278                 if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
279                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
280                 if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
281                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
282                 c->addr = tuneraddr;
283                 /* FIXME: input */
284                 break;
285         }
286
287         if (params->cb_first_if_lower_freq && div < t->last_div) {
288                 buffer[0] = config;
289                 buffer[1] = cb;
290                 buffer[2] = (div>>8) & 0x7f;
291                 buffer[3] = div      & 0xff;
292         } else {
293                 buffer[0] = (div>>8) & 0x7f;
294                 buffer[1] = div      & 0xff;
295                 buffer[2] = config;
296                 buffer[3] = cb;
297         }
298         t->last_div = div;
299         if (params->has_tda9887) {
300                 int config = 0;
301                 int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
302                         !(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
303
304                 if (t->std == V4L2_STD_SECAM_LC) {
305                         if (params->port1_active ^ params->port1_invert_for_secam_lc)
306                                 config |= TDA9887_PORT1_ACTIVE;
307                         if (params->port2_active ^ params->port2_invert_for_secam_lc)
308                                 config |= TDA9887_PORT2_ACTIVE;
309                 }
310                 else {
311                         if (params->port1_active)
312                                 config |= TDA9887_PORT1_ACTIVE;
313                         if (params->port2_active)
314                                 config |= TDA9887_PORT2_ACTIVE;
315                 }
316                 if (params->intercarrier_mode)
317                         config |= TDA9887_INTERCARRIER;
318                 if (is_secam_l) {
319                         if (i == 0 && params->default_top_secam_low)
320                                 config |= TDA9887_TOP(params->default_top_secam_low);
321                         else if (i == 1 && params->default_top_secam_mid)
322                                 config |= TDA9887_TOP(params->default_top_secam_mid);
323                         else if (params->default_top_secam_high)
324                                 config |= TDA9887_TOP(params->default_top_secam_high);
325                 }
326                 else {
327                         if (i == 0 && params->default_top_low)
328                                 config |= TDA9887_TOP(params->default_top_low);
329                         else if (i == 1 && params->default_top_mid)
330                                 config |= TDA9887_TOP(params->default_top_mid);
331                         else if (params->default_top_high)
332                                 config |= TDA9887_TOP(params->default_top_high);
333                 }
334                 if (params->default_pll_gating_18)
335                         config |= TDA9887_GATING_18;
336                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
337         }
338         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
339                   buffer[0],buffer[1],buffer[2],buffer[3]);
340
341         if (4 != (rc = i2c_master_send(c,buffer,4)))
342                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
343
344         switch (t->type) {
345         case TUNER_LG_TDVS_H06XF:
346                 /* Set the Auxiliary Byte. */
347                 buffer[0] = buffer[2];
348                 buffer[0] &= ~0x20;
349                 buffer[0] |= 0x18;
350                 buffer[1] = 0x20;
351                 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
352
353                 if (2 != (rc = i2c_master_send(c,buffer,2)))
354                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
355                 break;
356         case TUNER_MICROTUNE_4042FI5:
357         {
358                 // FIXME - this may also work for other tuners
359                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
360                 u8 status_byte = 0;
361
362                 /* Wait until the PLL locks */
363                 for (;;) {
364                         if (time_after(jiffies,timeout))
365                                 return;
366                         if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
367                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
368                                 break;
369                         }
370                         if (status_byte & TUNER_PLL_LOCKED)
371                                 break;
372                         udelay(10);
373                 }
374
375                 /* Set the charge pump for optimized phase noise figure */
376                 config &= ~TUNER_CHARGE_PUMP;
377                 buffer[0] = (div>>8) & 0x7f;
378                 buffer[1] = div      & 0xff;
379                 buffer[2] = config;
380                 buffer[3] = cb;
381                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
382                           buffer[0],buffer[1],buffer[2],buffer[3]);
383
384                 if (4 != (rc = i2c_master_send(c,buffer,4)))
385                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
386                 break;
387         }
388         }
389 }
390
391 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
392 {
393         struct tunertype *tun;
394         struct tuner *t = i2c_get_clientdata(c);
395         u8 buffer[4];
396         u16 div;
397         int rc, j;
398         enum param_type desired_type = TUNER_PARAM_TYPE_RADIO;
399         struct tuner_params *params;
400
401         tun = &tuners[t->type];
402
403         for (j = 0; j < tun->count-1; j++) {
404                 if (desired_type != tun->params[j].type)
405                         continue;
406                 break;
407         }
408         /* use default tuner_params if desired_type not available */
409         if (desired_type != tun->params[j].type)
410                 j = 0;
411
412         div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
413         params = &tun->params[j];
414         buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
415
416         switch (t->type) {
417         case TUNER_TENA_9533_DI:
418         case TUNER_YMEC_TVF_5533MF:
419                 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
420                 return;
421         case TUNER_PHILIPS_FM1216ME_MK3:
422         case TUNER_PHILIPS_FM1236_MK3:
423         case TUNER_PHILIPS_FMD1216ME_MK3:
424                 buffer[3] = 0x19;
425                 break;
426         case TUNER_TNF_5335MF:
427                 buffer[3] = 0x11;
428                 break;
429         case TUNER_PHILIPS_FM1256_IH3:
430                 div = (20 * freq) / 16000 + (int)(33.3 * 20);  /* IF 33.3 MHz */
431                 buffer[3] = 0x19;
432                 break;
433         case TUNER_LG_PAL_FM:
434                 buffer[3] = 0xa5;
435                 break;
436         case TUNER_MICROTUNE_4049FM5:
437                 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
438                 buffer[3] = 0xa4;
439                 break;
440         default:
441                 buffer[3] = 0xa4;
442                 break;
443         }
444         if (params->cb_first_if_lower_freq && div < t->last_div) {
445                 buffer[0] = buffer[2];
446                 buffer[1] = buffer[3];
447                 buffer[2] = (div>>8) & 0x7f;
448                 buffer[3] = div      & 0xff;
449         } else {
450                 buffer[0] = (div>>8) & 0x7f;
451                 buffer[1] = div      & 0xff;
452         }
453
454         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
455                buffer[0],buffer[1],buffer[2],buffer[3]);
456         t->last_div = div;
457
458         if (params->has_tda9887) {
459                 int config = 0;
460                 if (params->port1_active && !params->port1_fm_high_sensitivity)
461                         config |= TDA9887_PORT1_ACTIVE;
462                 if (params->port2_active && !params->port2_fm_high_sensitivity)
463                         config |= TDA9887_PORT2_ACTIVE;
464                 if (params->intercarrier_mode)
465                         config |= TDA9887_INTERCARRIER;
466 /*              if (params->port1_set_for_fm_mono)
467                         config &= ~TDA9887_PORT1_ACTIVE;*/
468                 i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
469         }
470         if (4 != (rc = i2c_master_send(c,buffer,4)))
471                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
472 }
473
474 int default_tuner_init(struct i2c_client *c)
475 {
476         struct tuner *t = i2c_get_clientdata(c);
477
478         tuner_info("type set to %d (%s)\n",
479                    t->type, tuners[t->type].name);
480         strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
481
482         t->set_tv_freq = default_set_tv_freq;
483         t->set_radio_freq = default_set_radio_freq;
484         t->has_signal = tuner_signal;
485         t->is_stereo = tuner_stereo;
486         t->standby = NULL;
487
488         return 0;
489 }
490
491 /*
492  * Overrides for Emacs so that we follow Linus's tabbing style.
493  * ---------------------------------------------------------------------------
494  * Local variables:
495  * c-basic-offset: 8
496  * End:
497  */