1 /*
2 * experimental driver for simple i2c audio chips.
3 *
4 * Copyright (c) 2000 Gerd Knorr
5 * based on code by:
6 * Eric Sandeen (eric_sandeen@bigfoot.com)
7 * Steve VanDeBogart (vandebo@uclink.berkeley.edu)
8 * Greg Alexander (galexand@acm.org)
9 *
10 * This code is placed under the terms of the GNU General Public License
11 *
12 * OPTIONS:
13 * debug - set to 1 if you'd like to see debug messages
14 *
15 */
16
17 #include <linux/config.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/sched.h>
21 #include <linux/string.h>
22 #include <linux/timer.h>
23 #include <linux/delay.h>
24 #include <linux/errno.h>
25 #include <linux/slab.h>
26 #include <linux/videodev.h>
27 #include <linux/i2c.h>
28 #include <linux/i2c-algo-bit.h>
29 #include <linux/init.h>
30 #include <linux/smp_lock.h>
31
32 #include "audiochip.h"
33 #include "id.h"
34 #include "i2c-compat.h"
35
36 #include "tvaudio.h"
37
38 /* ---------------------------------------------------------------------- */
39 /* insmod args */
40
41 MODULE_PARM(debug,"i");
42 static int debug = 0; /* insmod parameter */
43
44 MODULE_DESCRIPTION("device driver for various i2c TV sound decoder / audiomux chips");
45 MODULE_AUTHOR("Eric Sandeen, Steve VanDeBogart, Greg Alexander, Gerd Knorr");
46 MODULE_LICENSE("GPL");
47
48 #define UNSET (-1U)
49 #define dprintk if (debug) printk
50
51 /* ---------------------------------------------------------------------- */
52 /* our structs */
53
54 #define MAXREGS 64
55
56 struct CHIPSTATE;
57 typedef int (*getvalue)(int);
58 typedef int (*checkit)(struct CHIPSTATE*);
59 typedef int (*initialize)(struct CHIPSTATE*);
60 typedef int (*getmode)(struct CHIPSTATE*);
61 typedef void (*setmode)(struct CHIPSTATE*, int mode);
62 typedef void (*checkmode)(struct CHIPSTATE*);
63
64 /* i2c command */
65 typedef struct AUDIOCMD {
66 int count; /* # of bytes to send */
67 unsigned char bytes[MAXREGS+1]; /* addr, data, data, ... */
68 } audiocmd;
69
70 /* chip description */
71 struct CHIPDESC {
72 char *name; /* chip name */
73 int id; /* ID */
74 int addr_lo, addr_hi; /* i2c address range */
75 int registers; /* # of registers */
76
77 int *insmodopt;
78 checkit checkit;
79 initialize initialize;
80 int flags;
81 #define CHIP_HAS_VOLUME 1
82 #define CHIP_HAS_BASSTREBLE 2
83 #define CHIP_HAS_INPUTSEL 4
84
85 /* various i2c command sequences */
86 audiocmd init;
87
88 /* which register has which value */
89 int leftreg,rightreg,treblereg,bassreg;
90
91 /* initialize with (defaults to 65535/65535/32768/32768 */
92 int leftinit,rightinit,trebleinit,bassinit;
93
94 /* functions to convert the values (v4l -> chip) */
95 getvalue volfunc,treblefunc,bassfunc;
96
97 /* get/set mode */
98 getmode getmode;
99 setmode setmode;
100
101 /* check / autoswitch audio after channel switches */
102 checkmode checkmode;
103
104 /* input switch register + values for v4l inputs */
105 int inputreg;
106 int inputmap[8];
107 int inputmute;
108 int inputmask;
109 };
110 static struct CHIPDESC chiplist[];
111
112 /* current state of the chip */
113 struct CHIPSTATE {
114 struct i2c_client c;
115
116 /* index into CHIPDESC array */
117 int type;
118
119 /* shadow register set */
120 audiocmd shadow;
121
122 /* current settings */
123 __u16 left,right,treble,bass,mode;
124 int prevmode;
125 int norm;
126 /* thread */
127 struct task_struct *thread;
128 struct semaphore *notify;
129 wait_queue_head_t wq;
130 struct timer_list wt;
131 int done;
132 int watch_stereo;
133 };
134
135 #define VIDEO_MODE_RADIO 16 /* norm magic for radio mode */
136
137 /* ---------------------------------------------------------------------- */
138 /* i2c addresses */
139
140 static unsigned short normal_i2c[] = {
141 I2C_TDA8425 >> 1,
142 I2C_TEA6300 >> 1,
143 I2C_TEA6420 >> 1,
144 I2C_TDA9840 >> 1,
145 I2C_TDA985x_L >> 1,
146 I2C_TDA985x_H >> 1,
147 I2C_TDA9874 >> 1,
148 I2C_PIC16C54 >> 1,
149 I2C_CLIENT_END };
150 static unsigned short normal_i2c_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
151 I2C_CLIENT_INSMOD;
152
153 static struct i2c_driver driver;
154 static struct i2c_client client_template;
155
156
157 /* ---------------------------------------------------------------------- */
158 /* i2c I/O functions */
159
chip_write(struct CHIPSTATE * chip,int subaddr,int val)160 static int chip_write(struct CHIPSTATE *chip, int subaddr, int val)
161 {
162 unsigned char buffer[2];
163
164 if (-1 == subaddr) {
165 dprintk("%s: chip_write: 0x%x\n",
166 i2c_clientname(&chip->c), val);
167 chip->shadow.bytes[1] = val;
168 buffer[0] = val;
169 if (1 != i2c_master_send(&chip->c,buffer,1)) {
170 printk(KERN_WARNING "%s: I/O error (write 0x%x)\n",
171 i2c_clientname(&chip->c), val);
172 return -1;
173 }
174 } else {
175 dprintk("%s: chip_write: reg%d=0x%x\n",
176 i2c_clientname(&chip->c), subaddr, val);
177 chip->shadow.bytes[subaddr+1] = val;
178 buffer[0] = subaddr;
179 buffer[1] = val;
180 if (2 != i2c_master_send(&chip->c,buffer,2)) {
181 printk(KERN_WARNING "%s: I/O error (write reg%d=0x%x)\n",
182 i2c_clientname(&chip->c), subaddr, val);
183 return -1;
184 }
185 }
186 return 0;
187 }
188
chip_write_masked(struct CHIPSTATE * chip,int subaddr,int val,int mask)189 static int chip_write_masked(struct CHIPSTATE *chip, int subaddr, int val, int mask)
190 {
191 if (mask != 0) {
192 if (-1 == subaddr) {
193 val = (chip->shadow.bytes[1] & ~mask) | (val & mask);
194 } else {
195 val = (chip->shadow.bytes[subaddr+1] & ~mask) | (val & mask);
196 }
197 }
198 return chip_write(chip, subaddr, val);
199 }
200
chip_read(struct CHIPSTATE * chip)201 static int chip_read(struct CHIPSTATE *chip)
202 {
203 unsigned char buffer;
204
205 if (1 != i2c_master_recv(&chip->c,&buffer,1)) {
206 printk(KERN_WARNING "%s: I/O error (read)\n",
207 i2c_clientname(&chip->c));
208 return -1;
209 }
210 dprintk("%s: chip_read: 0x%x\n",i2c_clientname(&chip->c),buffer);
211 return buffer;
212 }
213
chip_read2(struct CHIPSTATE * chip,int subaddr)214 static int chip_read2(struct CHIPSTATE *chip, int subaddr)
215 {
216 unsigned char write[1];
217 unsigned char read[1];
218 struct i2c_msg msgs[2] = {
219 { chip->c.addr, 0, 1, write },
220 { chip->c.addr, I2C_M_RD, 1, read }
221 };
222 write[0] = subaddr;
223
224 if (2 != i2c_transfer(chip->c.adapter,msgs,2)) {
225 printk(KERN_WARNING "%s: I/O error (read2)\n",
226 i2c_clientname(&chip->c));
227 return -1;
228 }
229 dprintk("%s: chip_read2: reg%d=0x%x\n",
230 i2c_clientname(&chip->c),subaddr,read[0]);
231 return read[0];
232 }
233
chip_cmd(struct CHIPSTATE * chip,char * name,audiocmd * cmd)234 static int chip_cmd(struct CHIPSTATE *chip, char *name, audiocmd *cmd)
235 {
236 int i;
237
238 if (0 == cmd->count)
239 return 0;
240
241 /* update our shadow register set; print bytes if (debug > 0) */
242 dprintk("%s: chip_cmd(%s): reg=%d, data:",
243 i2c_clientname(&chip->c),name,cmd->bytes[0]);
244 for (i = 1; i < cmd->count; i++) {
245 dprintk(" 0x%x",cmd->bytes[i]);
246 chip->shadow.bytes[i+cmd->bytes[0]] = cmd->bytes[i];
247 }
248 dprintk("\n");
249
250 /* send data to the chip */
251 if (cmd->count != i2c_master_send(&chip->c,cmd->bytes,cmd->count)) {
252 printk(KERN_WARNING "%s: I/O error (%s)\n", i2c_clientname(&chip->c), name);
253 return -1;
254 }
255 return 0;
256 }
257
258 /* ---------------------------------------------------------------------- */
259 /* kernel thread for doing i2c stuff asyncronly
260 * right now it is used only to check the audio mode (mono/stereo/whatever)
261 * some time after switching to another TV channel, then turn on stereo
262 * if available, ...
263 */
264
chip_thread_wake(unsigned long data)265 static void chip_thread_wake(unsigned long data)
266 {
267 struct CHIPSTATE *chip = (struct CHIPSTATE*)data;
268 wake_up_interruptible(&chip->wq);
269 }
270
chip_thread(void * data)271 static int chip_thread(void *data)
272 {
273 struct CHIPSTATE *chip = data;
274 struct CHIPDESC *desc = chiplist + chip->type;
275
276 lock_kernel();
277 daemonize();
278 sigfillset(¤t->blocked);
279 strcpy(current->comm,i2c_clientname(&chip->c));
280 chip->thread = current;
281 unlock_kernel();
282
283 dprintk("%s: thread started\n", i2c_clientname(&chip->c));
284 if(chip->notify != NULL)
285 up(chip->notify);
286
287 for (;;) {
288 interruptible_sleep_on(&chip->wq);
289 dprintk("%s: thread wakeup\n", i2c_clientname(&chip->c));
290 if (chip->done || signal_pending(current))
291 break;
292
293 /* don't do anything for radio or if mode != auto */
294 if (chip->norm == VIDEO_MODE_RADIO || chip->mode != 0)
295 continue;
296
297 /* have a look what's going on */
298 desc->checkmode(chip);
299
300 /* schedule next check */
301 mod_timer(&chip->wt, jiffies+2*HZ);
302 }
303
304 chip->thread = NULL;
305 dprintk("%s: thread exiting\n", i2c_clientname(&chip->c));
306 if(chip->notify != NULL)
307 up(chip->notify);
308
309 return 0;
310 }
311
generic_checkmode(struct CHIPSTATE * chip)312 static void generic_checkmode(struct CHIPSTATE *chip)
313 {
314 struct CHIPDESC *desc = chiplist + chip->type;
315 int mode = desc->getmode(chip);
316
317 if (mode == chip->prevmode)
318 return;
319
320 dprintk("%s: thread checkmode\n", i2c_clientname(&chip->c));
321 chip->prevmode = mode;
322
323 if (mode & VIDEO_SOUND_STEREO)
324 desc->setmode(chip,VIDEO_SOUND_STEREO);
325 else if (mode & VIDEO_SOUND_LANG1)
326 desc->setmode(chip,VIDEO_SOUND_LANG1);
327 else if (mode & VIDEO_SOUND_LANG2)
328 desc->setmode(chip,VIDEO_SOUND_LANG2);
329 else
330 desc->setmode(chip,VIDEO_SOUND_MONO);
331 }
332
333 /* ---------------------------------------------------------------------- */
334 /* audio chip descriptions - defines+functions for tda9840 */
335
336 #define TDA9840_SW 0x00
337 #define TDA9840_LVADJ 0x02
338 #define TDA9840_STADJ 0x03
339 #define TDA9840_TEST 0x04
340
341 #define TDA9840_MONO 0x10
342 #define TDA9840_STEREO 0x2a
343 #define TDA9840_DUALA 0x12
344 #define TDA9840_DUALB 0x1e
345 #define TDA9840_DUALAB 0x1a
346 #define TDA9840_DUALBA 0x16
347 #define TDA9840_EXTERNAL 0x7a
348
349 #define TDA9840_DS_DUAL 0x20 /* Dual sound identified */
350 #define TDA9840_ST_STEREO 0x40 /* Stereo sound identified */
351 #define TDA9840_PONRES 0x80 /* Power-on reset detected if = 1 */
352
353 #define TDA9840_TEST_INT1SN 0x1 /* Integration time 0.5s when set */
354 #define TDA9840_TEST_INTFU 0x02 /* Disables integrator function */
355
tda9840_getmode(struct CHIPSTATE * chip)356 static int tda9840_getmode(struct CHIPSTATE *chip)
357 {
358 int val, mode;
359
360 val = chip_read(chip);
361 mode = VIDEO_SOUND_MONO;
362 if (val & TDA9840_DS_DUAL)
363 mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
364 if (val & TDA9840_ST_STEREO)
365 mode |= VIDEO_SOUND_STEREO;
366
367 dprintk ("tda9840_getmode(): raw chip read: %d, return: %d\n",
368 val, mode);
369 return mode;
370 }
371
tda9840_setmode(struct CHIPSTATE * chip,int mode)372 static void tda9840_setmode(struct CHIPSTATE *chip, int mode)
373 {
374 int update = 1;
375 int t = chip->shadow.bytes[TDA9840_SW + 1] & ~0x7e;
376
377 switch (mode) {
378 case VIDEO_SOUND_MONO:
379 t |= TDA9840_MONO;
380 break;
381 case VIDEO_SOUND_STEREO:
382 t |= TDA9840_STEREO;
383 break;
384 case VIDEO_SOUND_LANG1:
385 t |= TDA9840_DUALA;
386 break;
387 case VIDEO_SOUND_LANG2:
388 t |= TDA9840_DUALB;
389 break;
390 default:
391 update = 0;
392 }
393
394 if (update)
395 chip_write(chip, TDA9840_SW, t);
396 }
397
398 /* ---------------------------------------------------------------------- */
399 /* audio chip descriptions - defines+functions for tda985x */
400
401 /* subaddresses for TDA9855 */
402 #define TDA9855_VR 0x00 /* Volume, right */
403 #define TDA9855_VL 0x01 /* Volume, left */
404 #define TDA9855_BA 0x02 /* Bass */
405 #define TDA9855_TR 0x03 /* Treble */
406 #define TDA9855_SW 0x04 /* Subwoofer - not connected on DTV2000 */
407
408 /* subaddresses for TDA9850 */
409 #define TDA9850_C4 0x04 /* Control 1 for TDA9850 */
410
411 /* subaddesses for both chips */
412 #define TDA985x_C5 0x05 /* Control 2 for TDA9850, Control 1 for TDA9855 */
413 #define TDA985x_C6 0x06 /* Control 3 for TDA9850, Control 2 for TDA9855 */
414 #define TDA985x_C7 0x07 /* Control 4 for TDA9850, Control 3 for TDA9855 */
415 #define TDA985x_A1 0x08 /* Alignment 1 for both chips */
416 #define TDA985x_A2 0x09 /* Alignment 2 for both chips */
417 #define TDA985x_A3 0x0a /* Alignment 3 for both chips */
418
419 /* Masks for bits in TDA9855 subaddresses */
420 /* 0x00 - VR in TDA9855 */
421 /* 0x01 - VL in TDA9855 */
422 /* lower 7 bits control gain from -71dB (0x28) to 16dB (0x7f)
423 * in 1dB steps - mute is 0x27 */
424
425
426 /* 0x02 - BA in TDA9855 */
427 /* lower 5 bits control bass gain from -12dB (0x06) to 16.5dB (0x19)
428 * in .5dB steps - 0 is 0x0E */
429
430
431 /* 0x03 - TR in TDA9855 */
432 /* 4 bits << 1 control treble gain from -12dB (0x3) to 12dB (0xb)
433 * in 3dB steps - 0 is 0x7 */
434
435 /* Masks for bits in both chips' subaddresses */
436 /* 0x04 - SW in TDA9855, C4/Control 1 in TDA9850 */
437 /* Unique to TDA9855: */
438 /* 4 bits << 2 control subwoofer/surround gain from -14db (0x1) to 14db (0xf)
439 * in 3dB steps - mute is 0x0 */
440
441 /* Unique to TDA9850: */
442 /* lower 4 bits control stereo noise threshold, over which stereo turns off
443 * set to values of 0x00 through 0x0f for Ster1 through Ster16 */
444
445
446 /* 0x05 - C5 - Control 1 in TDA9855 , Control 2 in TDA9850*/
447 /* Unique to TDA9855: */
448 #define TDA9855_MUTE 1<<7 /* GMU, Mute at outputs */
449 #define TDA9855_AVL 1<<6 /* AVL, Automatic Volume Level */
450 #define TDA9855_LOUD 1<<5 /* Loudness, 1==off */
451 #define TDA9855_SUR 1<<3 /* Surround / Subwoofer 1==.5(L-R) 0==.5(L+R) */
452 /* Bits 0 to 3 select various combinations
453 * of line in and line out, only the
454 * interesting ones are defined */
455 #define TDA9855_EXT 1<<2 /* Selects inputs LIR and LIL. Pins 41 & 12 */
456 #define TDA9855_INT 0 /* Selects inputs LOR and LOL. (internal) */
457
458 /* Unique to TDA9850: */
459 /* lower 4 bits contol SAP noise threshold, over which SAP turns off
460 * set to values of 0x00 through 0x0f for SAP1 through SAP16 */
461
462
463 /* 0x06 - C6 - Control 2 in TDA9855, Control 3 in TDA9850 */
464 /* Common to TDA9855 and TDA9850: */
465 #define TDA985x_SAP 3<<6 /* Selects SAP output, mute if not received */
466 #define TDA985x_STEREO 1<<6 /* Selects Stereo ouput, mono if not received */
467 #define TDA985x_MONO 0 /* Forces Mono output */
468 #define TDA985x_LMU 1<<3 /* Mute (LOR/LOL for 9855, OUTL/OUTR for 9850) */
469
470 /* Unique to TDA9855: */
471 #define TDA9855_TZCM 1<<5 /* If set, don't mute till zero crossing */
472 #define TDA9855_VZCM 1<<4 /* If set, don't change volume till zero crossing*/
473 #define TDA9855_LINEAR 0 /* Linear Stereo */
474 #define TDA9855_PSEUDO 1 /* Pseudo Stereo */
475 #define TDA9855_SPAT_30 2 /* Spatial Stereo, 30% anti-phase crosstalk */
476 #define TDA9855_SPAT_50 3 /* Spatial Stereo, 52% anti-phase crosstalk */
477 #define TDA9855_E_MONO 7 /* Forced mono - mono select elseware, so useless*/
478
479 /* 0x07 - C7 - Control 3 in TDA9855, Control 4 in TDA9850 */
480 /* Common to both TDA9855 and TDA9850: */
481 /* lower 4 bits control input gain from -3.5dB (0x0) to 4dB (0xF)
482 * in .5dB steps - 0dB is 0x7 */
483
484 /* 0x08, 0x09 - A1 and A2 (read/write) */
485 /* Common to both TDA9855 and TDA9850: */
486 /* lower 5 bites are wideband and spectral expander alignment
487 * from 0x00 to 0x1f - nominal at 0x0f and 0x10 (read/write) */
488 #define TDA985x_STP 1<<5 /* Stereo Pilot/detect (read-only) */
489 #define TDA985x_SAPP 1<<6 /* SAP Pilot/detect (read-only) */
490 #define TDA985x_STS 1<<7 /* Stereo trigger 1= <35mV 0= <30mV (write-only)*/
491
492 /* 0x0a - A3 */
493 /* Common to both TDA9855 and TDA9850: */
494 /* lower 3 bits control timing current for alignment: -30% (0x0), -20% (0x1),
495 * -10% (0x2), nominal (0x3), +10% (0x6), +20% (0x5), +30% (0x4) */
496 #define TDA985x_ADJ 1<<7 /* Stereo adjust on/off (wideband and spectral */
497
tda9855_volume(int val)498 static int tda9855_volume(int val) { return val/0x2e8+0x27; }
tda9855_bass(int val)499 static int tda9855_bass(int val) { return val/0xccc+0x06; }
tda9855_treble(int val)500 static int tda9855_treble(int val) { return (val/0x1c71+0x3)<<1; }
501
tda985x_getmode(struct CHIPSTATE * chip)502 static int tda985x_getmode(struct CHIPSTATE *chip)
503 {
504 int mode;
505
506 mode = ((TDA985x_STP | TDA985x_SAPP) &
507 chip_read(chip)) >> 4;
508 /* Add mono mode regardless of SAP and stereo */
509 /* Allows forced mono */
510 return mode | VIDEO_SOUND_MONO;
511 }
512
tda985x_setmode(struct CHIPSTATE * chip,int mode)513 static void tda985x_setmode(struct CHIPSTATE *chip, int mode)
514 {
515 int update = 1;
516 int c6 = chip->shadow.bytes[TDA985x_C6+1] & 0x3f;
517
518 switch (mode) {
519 case VIDEO_SOUND_MONO:
520 c6 |= TDA985x_MONO;
521 break;
522 case VIDEO_SOUND_STEREO:
523 c6 |= TDA985x_STEREO;
524 break;
525 case VIDEO_SOUND_LANG1:
526 c6 |= TDA985x_SAP;
527 break;
528 default:
529 update = 0;
530 }
531 if (update)
532 chip_write(chip,TDA985x_C6,c6);
533 }
534
535
536 /* ---------------------------------------------------------------------- */
537 /* audio chip descriptions - defines+functions for tda9873h */
538
539 /* Subaddresses for TDA9873H */
540
541 #define TDA9873_SW 0x00 /* Switching */
542 #define TDA9873_AD 0x01 /* Adjust */
543 #define TDA9873_PT 0x02 /* Port */
544
545 /* Subaddress 0x00: Switching Data
546 * B7..B0:
547 *
548 * B1, B0: Input source selection
549 * 0, 0 internal
550 * 1, 0 external stereo
551 * 0, 1 external mono
552 */
553 #define TDA9873_INP_MASK 3
554 #define TDA9873_INTERNAL 0
555 #define TDA9873_EXT_STEREO 2
556 #define TDA9873_EXT_MONO 1
557
558 /* B3, B2: output signal select
559 * B4 : transmission mode
560 * 0, 0, 1 Mono
561 * 1, 0, 0 Stereo
562 * 1, 1, 1 Stereo (reversed channel)
563 * 0, 0, 0 Dual AB
564 * 0, 0, 1 Dual AA
565 * 0, 1, 0 Dual BB
566 * 0, 1, 1 Dual BA
567 */
568
569 #define TDA9873_TR_MASK (7 << 2)
570 #define TDA9873_TR_MONO 4
571 #define TDA9873_TR_STEREO 1 << 4
572 #define TDA9873_TR_REVERSE (1 << 3) & (1 << 2)
573 #define TDA9873_TR_DUALA 1 << 2
574 #define TDA9873_TR_DUALB 1 << 3
575
576 /* output level controls
577 * B5: output level switch (0 = reduced gain, 1 = normal gain)
578 * B6: mute (1 = muted)
579 * B7: auto-mute (1 = auto-mute enabled)
580 */
581
582 #define TDA9873_GAIN_NORMAL 1 << 5
583 #define TDA9873_MUTE 1 << 6
584 #define TDA9873_AUTOMUTE 1 << 7
585
586 /* Subaddress 0x01: Adjust/standard */
587
588 /* Lower 4 bits (C3..C0) control stereo adjustment on R channel (-0.6 - +0.7 dB)
589 * Recommended value is +0 dB
590 */
591
592 #define TDA9873_STEREO_ADJ 0x06 /* 0dB gain */
593
594 /* Bits C6..C4 control FM stantard
595 * C6, C5, C4
596 * 0, 0, 0 B/G (PAL FM)
597 * 0, 0, 1 M
598 * 0, 1, 0 D/K(1)
599 * 0, 1, 1 D/K(2)
600 * 1, 0, 0 D/K(3)
601 * 1, 0, 1 I
602 */
603 #define TDA9873_BG 0
604 #define TDA9873_M 1
605 #define TDA9873_DK1 2
606 #define TDA9873_DK2 3
607 #define TDA9873_DK3 4
608 #define TDA9873_I 5
609
610 /* C7 controls identification response time (1=fast/0=normal)
611 */
612 #define TDA9873_IDR_NORM 0
613 #define TDA9873_IDR_FAST 1 << 7
614
615
616 /* Subaddress 0x02: Port data */
617
618 /* E1, E0 free programmable ports P1/P2
619 0, 0 both ports low
620 0, 1 P1 high
621 1, 0 P2 high
622 1, 1 both ports high
623 */
624
625 #define TDA9873_PORTS 3
626
627 /* E2: test port */
628 #define TDA9873_TST_PORT 1 << 2
629
630 /* E5..E3 control mono output channel (together with transmission mode bit B4)
631 *
632 * E5 E4 E3 B4 OUTM
633 * 0 0 0 0 mono
634 * 0 0 1 0 DUAL B
635 * 0 1 0 1 mono (from stereo decoder)
636 */
637 #define TDA9873_MOUT_MONO 0
638 #define TDA9873_MOUT_FMONO 0
639 #define TDA9873_MOUT_DUALA 0
640 #define TDA9873_MOUT_DUALB 1 << 3
641 #define TDA9873_MOUT_ST 1 << 4
642 #define TDA9873_MOUT_EXTM (1 << 4 ) & (1 << 3)
643 #define TDA9873_MOUT_EXTL 1 << 5
644 #define TDA9873_MOUT_EXTR (1 << 5 ) & (1 << 3)
645 #define TDA9873_MOUT_EXTLR (1 << 5 ) & (1 << 4)
646 #define TDA9873_MOUT_MUTE (1 << 5 ) & (1 << 4) & (1 << 3)
647
648 /* Status bits: (chip read) */
649 #define TDA9873_PONR 0 /* Power-on reset detected if = 1 */
650 #define TDA9873_STEREO 2 /* Stereo sound is identified */
651 #define TDA9873_DUAL 4 /* Dual sound is identified */
652
tda9873_getmode(struct CHIPSTATE * chip)653 static int tda9873_getmode(struct CHIPSTATE *chip)
654 {
655 int val,mode;
656
657 val = chip_read(chip);
658 mode = VIDEO_SOUND_MONO;
659 if (val & TDA9873_STEREO)
660 mode |= VIDEO_SOUND_STEREO;
661 if (val & TDA9873_DUAL)
662 mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
663 dprintk ("tda9873_getmode(): raw chip read: %d, return: %d\n",
664 val, mode);
665 return mode;
666 }
667
tda9873_setmode(struct CHIPSTATE * chip,int mode)668 static void tda9873_setmode(struct CHIPSTATE *chip, int mode)
669 {
670 int sw_data = chip->shadow.bytes[TDA9873_SW+1] & ~ TDA9873_TR_MASK;
671 /* int adj_data = chip->shadow.bytes[TDA9873_AD+1] ; */
672
673 if ((sw_data & TDA9873_INP_MASK) != TDA9873_INTERNAL) {
674 dprintk("tda9873_setmode(): external input\n");
675 return;
676 }
677
678 dprintk("tda9873_setmode(): chip->shadow.bytes[%d] = %d\n", TDA9873_SW+1, chip->shadow.bytes[TDA9873_SW+1]);
679 dprintk("tda9873_setmode(): sw_data = %d\n", sw_data);
680
681 switch (mode) {
682 case VIDEO_SOUND_MONO:
683 sw_data |= TDA9873_TR_MONO;
684 break;
685 case VIDEO_SOUND_STEREO:
686 sw_data |= TDA9873_TR_STEREO;
687 break;
688 case VIDEO_SOUND_LANG1:
689 sw_data |= TDA9873_TR_DUALA;
690 break;
691 case VIDEO_SOUND_LANG2:
692 sw_data |= TDA9873_TR_DUALB;
693 break;
694 default:
695 chip->mode = 0;
696 return;
697 }
698
699 chip_write(chip, TDA9873_SW, sw_data);
700 dprintk("tda9873_setmode(): req. mode %d; chip_write: %d\n",
701 mode, sw_data);
702 }
703
tda9873_checkit(struct CHIPSTATE * chip)704 static int tda9873_checkit(struct CHIPSTATE *chip)
705 {
706 int rc;
707
708 if (-1 == (rc = chip_read2(chip,254)))
709 return 0;
710 return (rc & ~0x1f) == 0x80;
711 }
712
713
714 /* ---------------------------------------------------------------------- */
715 /* audio chip description - defines+functions for tda9874h and tda9874a */
716 /* Dariusz Kowalewski <darekk@automex.pl> */
717
718 /* Subaddresses for TDA9874H and TDA9874A (slave rx) */
719 #define TDA9874A_AGCGR 0x00 /* AGC gain */
720 #define TDA9874A_GCONR 0x01 /* general config */
721 #define TDA9874A_MSR 0x02 /* monitor select */
722 #define TDA9874A_C1FRA 0x03 /* carrier 1 freq. */
723 #define TDA9874A_C1FRB 0x04 /* carrier 1 freq. */
724 #define TDA9874A_C1FRC 0x05 /* carrier 1 freq. */
725 #define TDA9874A_C2FRA 0x06 /* carrier 2 freq. */
726 #define TDA9874A_C2FRB 0x07 /* carrier 2 freq. */
727 #define TDA9874A_C2FRC 0x08 /* carrier 2 freq. */
728 #define TDA9874A_DCR 0x09 /* demodulator config */
729 #define TDA9874A_FMER 0x0a /* FM de-emphasis */
730 #define TDA9874A_FMMR 0x0b /* FM dematrix */
731 #define TDA9874A_C1OLAR 0x0c /* ch.1 output level adj. */
732 #define TDA9874A_C2OLAR 0x0d /* ch.2 output level adj. */
733 #define TDA9874A_NCONR 0x0e /* NICAM config */
734 #define TDA9874A_NOLAR 0x0f /* NICAM output level adj. */
735 #define TDA9874A_NLELR 0x10 /* NICAM lower error limit */
736 #define TDA9874A_NUELR 0x11 /* NICAM upper error limit */
737 #define TDA9874A_AMCONR 0x12 /* audio mute control */
738 #define TDA9874A_SDACOSR 0x13 /* stereo DAC output select */
739 #define TDA9874A_AOSR 0x14 /* analog output select */
740 #define TDA9874A_DAICONR 0x15 /* digital audio interface config */
741 #define TDA9874A_I2SOSR 0x16 /* I2S-bus output select */
742 #define TDA9874A_I2SOLAR 0x17 /* I2S-bus output level adj. */
743 #define TDA9874A_MDACOSR 0x18 /* mono DAC output select (tda9874a) */
744 #define TDA9874A_ESP 0xFF /* easy standard progr. (tda9874a) */
745
746 /* Subaddresses for TDA9874H and TDA9874A (slave tx) */
747 #define TDA9874A_DSR 0x00 /* device status */
748 #define TDA9874A_NSR 0x01 /* NICAM status */
749 #define TDA9874A_NECR 0x02 /* NICAM error count */
750 #define TDA9874A_DR1 0x03 /* add. data LSB */
751 #define TDA9874A_DR2 0x04 /* add. data MSB */
752 #define TDA9874A_LLRA 0x05 /* monitor level read-out LSB */
753 #define TDA9874A_LLRB 0x06 /* monitor level read-out MSB */
754 #define TDA9874A_SIFLR 0x07 /* SIF level */
755 #define TDA9874A_TR2 252 /* test reg. 2 */
756 #define TDA9874A_TR1 253 /* test reg. 1 */
757 #define TDA9874A_DIC 254 /* device id. code */
758 #define TDA9874A_SIC 255 /* software id. code */
759
760
761 static int tda9874a_mode = 1; /* 0: A2, 1: NICAM */
762 static int tda9874a_GCONR = 0xc0; /* default config. input pin: SIFSEL=0 */
763 static int tda9874a_NCONR = 0x01; /* default NICAM config.: AMSEL=0,AMUTE=1 */
764 static int tda9874a_ESP = 0x07; /* default standard: NICAM D/K */
765 static int tda9874a_dic = -1; /* device id. code */
766
767 /* insmod options for tda9874a */
768 static unsigned int tda9874a_SIF = UNSET;
769 static unsigned int tda9874a_AMSEL = UNSET;
770 static unsigned int tda9874a_STD = UNSET;
771 MODULE_PARM(tda9874a_SIF,"i");
772 MODULE_PARM(tda9874a_AMSEL,"i");
773 MODULE_PARM(tda9874a_STD,"i");
774
775 /*
776 * initialization table for tda9874 decoder:
777 * - carrier 1 freq. registers (3 bytes)
778 * - carrier 2 freq. registers (3 bytes)
779 * - demudulator config register
780 * - FM de-emphasis register (slow identification mode)
781 * Note: frequency registers must be written in single i2c transfer.
782 */
783 static struct tda9874a_MODES {
784 char *name;
785 audiocmd cmd;
786 } tda9874a_modelist[9] = {
787 { "A2, B/G",
788 { 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x77,0xA0,0x00, 0x00,0x00 }} },
789 { "A2, M (Korea)",
790 { 9, { TDA9874A_C1FRA, 0x5D,0xC0,0x00, 0x62,0x6A,0xAA, 0x20,0x22 }} },
791 { "A2, D/K (1)",
792 { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x82,0x60,0x00, 0x00,0x00 }} },
793 { "A2, D/K (2)",
794 { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x8C,0x75,0x55, 0x00,0x00 }} },
795 { "A2, D/K (3)",
796 { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x77,0xA0,0x00, 0x00,0x00 }} },
797 { "NICAM, I",
798 { 9, { TDA9874A_C1FRA, 0x7D,0x00,0x00, 0x88,0x8A,0xAA, 0x08,0x33 }} },
799 { "NICAM, B/G",
800 { 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x79,0xEA,0xAA, 0x08,0x33 }} },
801 { "NICAM, D/K", /* default */
802 { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x08,0x33 }} },
803 { "NICAM, L",
804 { 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x09,0x33 }} }
805 };
806
tda9874a_setup(struct CHIPSTATE * chip)807 static int tda9874a_setup(struct CHIPSTATE *chip)
808 {
809 chip_write(chip, TDA9874A_AGCGR, 0x00); /* 0 dB */
810 chip_write(chip, TDA9874A_GCONR, tda9874a_GCONR);
811 chip_write(chip, TDA9874A_MSR, (tda9874a_mode) ? 0x03:0x02);
812 if(tda9874a_dic == 0x11) {
813 chip_write(chip, TDA9874A_FMMR, 0x80);
814 } else { /* dic == 0x07 */
815 chip_cmd(chip,"tda9874_modelist",&tda9874a_modelist[tda9874a_STD].cmd);
816 chip_write(chip, TDA9874A_FMMR, 0x00);
817 }
818 chip_write(chip, TDA9874A_C1OLAR, 0x00); /* 0 dB */
819 chip_write(chip, TDA9874A_C2OLAR, 0x00); /* 0 dB */
820 chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
821 chip_write(chip, TDA9874A_NOLAR, 0x00); /* 0 dB */
822 /* Note: If signal quality is poor you may want to change NICAM */
823 /* error limit registers (NLELR and NUELR) to some greater values. */
824 /* Then the sound would remain stereo, but won't be so clear. */
825 chip_write(chip, TDA9874A_NLELR, 0x14); /* default */
826 chip_write(chip, TDA9874A_NUELR, 0x50); /* default */
827
828 if(tda9874a_dic == 0x11) {
829 chip_write(chip, TDA9874A_AMCONR, 0xf9);
830 chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
831 chip_write(chip, TDA9874A_AOSR, 0x80);
832 chip_write(chip, TDA9874A_MDACOSR, (tda9874a_mode) ? 0x82:0x80);
833 chip_write(chip, TDA9874A_ESP, tda9874a_ESP);
834 } else { /* dic == 0x07 */
835 chip_write(chip, TDA9874A_AMCONR, 0xfb);
836 chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
837 chip_write(chip, TDA9874A_AOSR, 0x00); // or 0x10
838 }
839 dprintk("tda9874a_setup(): %s [0x%02X].\n",
840 tda9874a_modelist[tda9874a_STD].name,tda9874a_STD);
841 return 1;
842 }
843
tda9874a_getmode(struct CHIPSTATE * chip)844 static int tda9874a_getmode(struct CHIPSTATE *chip)
845 {
846 int dsr,nsr,mode;
847 int necr; /* just for debugging */
848
849 mode = VIDEO_SOUND_MONO;
850
851 if(-1 == (dsr = chip_read2(chip,TDA9874A_DSR)))
852 return mode;
853 if(-1 == (nsr = chip_read2(chip,TDA9874A_NSR)))
854 return mode;
855 if(-1 == (necr = chip_read2(chip,TDA9874A_NECR)))
856 return mode;
857
858 /* need to store dsr/nsr somewhere */
859 chip->shadow.bytes[MAXREGS-2] = dsr;
860 chip->shadow.bytes[MAXREGS-1] = nsr;
861
862 if(tda9874a_mode) {
863 /* Note: DSR.RSSF and DSR.AMSTAT bits are also checked.
864 * If NICAM auto-muting is enabled, DSR.AMSTAT=1 indicates
865 * that sound has (temporarily) switched from NICAM to
866 * mono FM (or AM) on 1st sound carrier due to high NICAM bit
867 * error count. So in fact there is no stereo in this case :-(
868 * But changing the mode to VIDEO_SOUND_MONO would switch
869 * external 4052 multiplexer in audio_hook().
870 */
871 #if 0
872 if((nsr & 0x02) && !(dsr & 0x10)) /* NSR.S/MB=1 and DSR.AMSTAT=0 */
873 mode |= VIDEO_SOUND_STEREO;
874 #else
875 if(nsr & 0x02) /* NSR.S/MB=1 */
876 mode |= VIDEO_SOUND_STEREO;
877 #endif
878 if(nsr & 0x01) /* NSR.D/SB=1 */
879 mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
880 } else {
881 if(dsr & 0x02) /* DSR.IDSTE=1 */
882 mode |= VIDEO_SOUND_STEREO;
883 if(dsr & 0x04) /* DSR.IDDUA=1 */
884 mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
885 }
886
887 dprintk("tda9874a_getmode(): DSR=0x%X, NSR=0x%X, NECR=0x%X, return: %d.\n",
888 dsr, nsr, necr, mode);
889 return mode;
890 }
891
tda9874a_setmode(struct CHIPSTATE * chip,int mode)892 static void tda9874a_setmode(struct CHIPSTATE *chip, int mode)
893 {
894 /* Disable/enable NICAM auto-muting (based on DSR.RSSF status bit). */
895 /* If auto-muting is disabled, we can hear a signal of degrading quality. */
896 if(tda9874a_mode) {
897 if(chip->shadow.bytes[MAXREGS-2] & 0x20) /* DSR.RSSF=1 */
898 tda9874a_NCONR &= 0xfe; /* enable */
899 else
900 tda9874a_NCONR |= 0x01; /* disable */
901 chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
902 }
903
904 /* Note: TDA9874A supports automatic FM dematrixing (FMMR register)
905 * and has auto-select function for audio output (AOSR register).
906 * Old TDA9874H doesn't support these features.
907 * TDA9874A also has additional mono output pin (OUTM), which
908 * on same (all?) tv-cards is not used, anyway (as well as MONOIN).
909 */
910 if(tda9874a_dic == 0x11) {
911 int aosr = 0x80;
912 int mdacosr = (tda9874a_mode) ? 0x82:0x80;
913
914 switch(mode) {
915 case VIDEO_SOUND_MONO:
916 case VIDEO_SOUND_STEREO:
917 break;
918 case VIDEO_SOUND_LANG1:
919 aosr = 0x80; /* auto-select, dual A/A */
920 mdacosr = (tda9874a_mode) ? 0x82:0x80;
921 break;
922 case VIDEO_SOUND_LANG2:
923 aosr = 0xa0; /* auto-select, dual B/B */
924 mdacosr = (tda9874a_mode) ? 0x83:0x81;
925 break;
926 default:
927 chip->mode = 0;
928 return;
929 }
930 chip_write(chip, TDA9874A_AOSR, aosr);
931 chip_write(chip, TDA9874A_MDACOSR, mdacosr);
932
933 dprintk("tda9874a_setmode(): req. mode %d; AOSR=0x%X, MDACOSR=0x%X.\n",
934 mode, aosr, mdacosr);
935
936 } else { /* dic == 0x07 */
937 int fmmr,aosr;
938
939 switch(mode) {
940 case VIDEO_SOUND_MONO:
941 fmmr = 0x00; /* mono */
942 aosr = 0x10; /* A/A */
943 break;
944 case VIDEO_SOUND_STEREO:
945 if(tda9874a_mode) {
946 fmmr = 0x00;
947 aosr = 0x00; /* handled by NICAM auto-mute */
948 } else {
949 fmmr = (tda9874a_ESP == 1) ? 0x05 : 0x04; /* stereo */
950 aosr = 0x00;
951 }
952 break;
953 case VIDEO_SOUND_LANG1:
954 fmmr = 0x02; /* dual */
955 aosr = 0x10; /* dual A/A */
956 break;
957 case VIDEO_SOUND_LANG2:
958 fmmr = 0x02; /* dual */
959 aosr = 0x20; /* dual B/B */
960 break;
961 default:
962 chip->mode = 0;
963 return;
964 }
965 chip_write(chip, TDA9874A_FMMR, fmmr);
966 chip_write(chip, TDA9874A_AOSR, aosr);
967
968 dprintk("tda9874a_setmode(): req. mode %d; FMMR=0x%X, AOSR=0x%X.\n",
969 mode, fmmr, aosr);
970 }
971 }
972
tda9874a_checkit(struct CHIPSTATE * chip)973 static int tda9874a_checkit(struct CHIPSTATE *chip)
974 {
975 int dic,sic; /* device id. and software id. codes */
976
977 if(-1 == (dic = chip_read2(chip,TDA9874A_DIC)))
978 return 0;
979 if(-1 == (sic = chip_read2(chip,TDA9874A_SIC)))
980 return 0;
981
982 dprintk("tda9874a_checkit(): DIC=0x%X, SIC=0x%X.\n", dic, sic);
983
984 if((dic == 0x11)||(dic == 0x07)) {
985 printk("tvaudio: found tda9874%s.\n", (dic == 0x11) ? "a":"h");
986 tda9874a_dic = dic; /* remember device id. */
987 return 1;
988 }
989 return 0; /* not found */
990 }
991
tda9874a_initialize(struct CHIPSTATE * chip)992 static int tda9874a_initialize(struct CHIPSTATE *chip)
993 {
994 if (tda9874a_SIF > 2)
995 tda9874a_SIF = 1;
996 if (tda9874a_STD >= 8)
997 tda9874a_STD = 0;
998 if(tda9874a_AMSEL > 1)
999 tda9874a_AMSEL = 0;
1000
1001 if(tda9874a_SIF == 1)
1002 tda9874a_GCONR = 0xc0; /* sound IF input 1 */
1003 else
1004 tda9874a_GCONR = 0xc1; /* sound IF input 2 */
1005
1006 tda9874a_ESP = tda9874a_STD;
1007 tda9874a_mode = (tda9874a_STD < 5) ? 0 : 1;
1008
1009 if(tda9874a_AMSEL == 0)
1010 tda9874a_NCONR = 0x01; /* auto-mute: analog mono input */
1011 else
1012 tda9874a_NCONR = 0x05; /* auto-mute: 1st carrier FM or AM */
1013
1014 tda9874a_setup(chip);
1015 return 0;
1016 }
1017
1018
1019 /* ---------------------------------------------------------------------- */
1020 /* audio chip descriptions - defines+functions for tea6420 */
1021
1022 #define TEA6300_VL 0x00 /* volume left */
1023 #define TEA6300_VR 0x01 /* volume right */
1024 #define TEA6300_BA 0x02 /* bass */
1025 #define TEA6300_TR 0x03 /* treble */
1026 #define TEA6300_FA 0x04 /* fader control */
1027 #define TEA6300_S 0x05 /* switch register */
1028 /* values for those registers: */
1029 #define TEA6300_S_SA 0x01 /* stereo A input */
1030 #define TEA6300_S_SB 0x02 /* stereo B */
1031 #define TEA6300_S_SC 0x04 /* stereo C */
1032 #define TEA6300_S_GMU 0x80 /* general mute */
1033
1034 #define TEA6420_S_SA 0x00 /* stereo A input */
1035 #define TEA6420_S_SB 0x01 /* stereo B */
1036 #define TEA6420_S_SC 0x02 /* stereo C */
1037 #define TEA6420_S_SD 0x03 /* stereo D */
1038 #define TEA6420_S_SE 0x04 /* stereo E */
1039 #define TEA6420_S_GMU 0x05 /* general mute */
1040
tea6300_shift10(int val)1041 static int tea6300_shift10(int val) { return val >> 10; }
tea6300_shift12(int val)1042 static int tea6300_shift12(int val) { return val >> 12; }
1043
1044
1045 /* ---------------------------------------------------------------------- */
1046 /* audio chip descriptions - defines+functions for tda8425 */
1047
1048 #define TDA8425_VL 0x00 /* volume left */
1049 #define TDA8425_VR 0x01 /* volume right */
1050 #define TDA8425_BA 0x02 /* bass */
1051 #define TDA8425_TR 0x03 /* treble */
1052 #define TDA8425_S1 0x08 /* switch functions */
1053 /* values for those registers: */
1054 #define TDA8425_S1_OFF 0xEE /* audio off (mute on) */
1055 #define TDA8425_S1_CH1 0xCE /* audio channel 1 (mute off) - "linear stereo" mode */
1056 #define TDA8425_S1_CH2 0xCF /* audio channel 2 (mute off) - "linear stereo" mode */
1057 #define TDA8425_S1_MU 0x20 /* mute bit */
1058 #define TDA8425_S1_STEREO 0x18 /* stereo bits */
1059 #define TDA8425_S1_STEREO_SPATIAL 0x18 /* spatial stereo */
1060 #define TDA8425_S1_STEREO_LINEAR 0x08 /* linear stereo */
1061 #define TDA8425_S1_STEREO_PSEUDO 0x10 /* pseudo stereo */
1062 #define TDA8425_S1_STEREO_MONO 0x00 /* forced mono */
1063 #define TDA8425_S1_ML 0x06 /* language selector */
1064 #define TDA8425_S1_ML_SOUND_A 0x02 /* sound a */
1065 #define TDA8425_S1_ML_SOUND_B 0x04 /* sound b */
1066 #define TDA8425_S1_ML_STEREO 0x06 /* stereo */
1067 #define TDA8425_S1_IS 0x01 /* channel selector */
1068
1069
tda8425_shift10(int val)1070 static int tda8425_shift10(int val) { return (val >> 10) | 0xc0; }
tda8425_shift12(int val)1071 static int tda8425_shift12(int val) { return (val >> 12) | 0xf0; }
1072
tda8425_initialize(struct CHIPSTATE * chip)1073 static int tda8425_initialize(struct CHIPSTATE *chip)
1074 {
1075 struct CHIPDESC *desc = chiplist + chip->type;
1076 int inputmap[8] = { /* tuner */ TDA8425_S1_CH2, /* radio */ TDA8425_S1_CH1,
1077 /* extern */ TDA8425_S1_CH1, /* intern */ TDA8425_S1_OFF,
1078 /* off */ TDA8425_S1_OFF, /* on */ TDA8425_S1_CH2};
1079
1080 if (chip->c.adapter->id == (I2C_ALGO_BIT | I2C_HW_B_RIVA)) {
1081 memcpy (desc->inputmap, inputmap, sizeof (inputmap));
1082 }
1083 return 0;
1084 }
1085
tda8425_setmode(struct CHIPSTATE * chip,int mode)1086 static void tda8425_setmode(struct CHIPSTATE *chip, int mode)
1087 {
1088 int s1 = chip->shadow.bytes[TDA8425_S1+1] & 0xe1;
1089
1090 if (mode & VIDEO_SOUND_LANG1) {
1091 s1 |= TDA8425_S1_ML_SOUND_A;
1092 s1 |= TDA8425_S1_STEREO_PSEUDO;
1093
1094 } else if (mode & VIDEO_SOUND_LANG2) {
1095 s1 |= TDA8425_S1_ML_SOUND_B;
1096 s1 |= TDA8425_S1_STEREO_PSEUDO;
1097
1098 } else {
1099 s1 |= TDA8425_S1_ML_STEREO;
1100
1101 if (mode & VIDEO_SOUND_MONO)
1102 s1 |= TDA8425_S1_STEREO_MONO;
1103 if (mode & VIDEO_SOUND_STEREO)
1104 s1 |= TDA8425_S1_STEREO_SPATIAL;
1105 }
1106 chip_write(chip,TDA8425_S1,s1);
1107 }
1108
1109
1110 /* ---------------------------------------------------------------------- */
1111 /* audio chip descriptions - defines+functions for pic16c54 (PV951) */
1112
1113 /* the registers of 16C54, I2C sub address. */
1114 #define PIC16C54_REG_KEY_CODE 0x01 /* Not use. */
1115 #define PIC16C54_REG_MISC 0x02
1116
1117 /* bit definition of the RESET register, I2C data. */
1118 #define PIC16C54_MISC_RESET_REMOTE_CTL 0x01 /* bit 0, Reset to receive the key */
1119 /* code of remote controller */
1120 #define PIC16C54_MISC_MTS_MAIN 0x02 /* bit 1 */
1121 #define PIC16C54_MISC_MTS_SAP 0x04 /* bit 2 */
1122 #define PIC16C54_MISC_MTS_BOTH 0x08 /* bit 3 */
1123 #define PIC16C54_MISC_SND_MUTE 0x10 /* bit 4, Mute Audio(Line-in and Tuner) */
1124 #define PIC16C54_MISC_SND_NOTMUTE 0x20 /* bit 5 */
1125 #define PIC16C54_MISC_SWITCH_TUNER 0x40 /* bit 6 , Switch to Line-in */
1126 #define PIC16C54_MISC_SWITCH_LINE 0x80 /* bit 7 , Switch to Tuner */
1127
1128 /* ---------------------------------------------------------------------- */
1129 /* audio chip descriptions - defines+functions for TA8874Z */
1130
1131 // write 1st byte
1132 #define TA8874Z_LED_STE 0x80
1133 #define TA8874Z_LED_BIL 0x40
1134 #define TA8874Z_LED_EXT 0x20
1135 #define TA8874Z_MONO_SET 0x10
1136 #define TA8874Z_MUTE 0x08
1137 #define TA8874Z_F_MONO 0x04
1138 #define TA8874Z_MODE_SUB 0x02
1139 #define TA8874Z_MODE_MAIN 0x01
1140
1141 // write 2nd byte
1142 //#define TA8874Z_TI 0x80 // test mode
1143 #define TA8874Z_SEPARATION 0x3f
1144 #define TA8874Z_SEPARATION_DEFAULT 0x10
1145
1146 // read
1147 #define TA8874Z_B1 0x80
1148 #define TA8874Z_B0 0x40
1149 #define TA8874Z_CHAG_FLAG 0x20
1150
1151 // B1 B0
1152 // mono L H
1153 // stereo L L
1154 // BIL H L
1155
ta8874z_getmode(struct CHIPSTATE * chip)1156 static int ta8874z_getmode(struct CHIPSTATE *chip)
1157 {
1158 int val, mode;
1159
1160 val = chip_read(chip);
1161 mode = VIDEO_SOUND_MONO;
1162 if (val & TA8874Z_B1){
1163 mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
1164 }else if (!(val & TA8874Z_B0)){
1165 mode |= VIDEO_SOUND_STEREO;
1166 }
1167 //dprintk ("ta8874z_getmode(): raw chip read: 0x%02x, return: 0x%02x\n", val, mode);
1168 return mode;
1169 }
1170
1171 static audiocmd ta8874z_stereo = { 2, {0, TA8874Z_SEPARATION_DEFAULT}};
1172 static audiocmd ta8874z_mono = {2, { TA8874Z_MONO_SET, TA8874Z_SEPARATION_DEFAULT}};
1173 static audiocmd ta8874z_main = {2, { 0, TA8874Z_SEPARATION_DEFAULT}};
1174 static audiocmd ta8874z_sub = {2, { TA8874Z_MODE_SUB, TA8874Z_SEPARATION_DEFAULT}};
1175
ta8874z_setmode(struct CHIPSTATE * chip,int mode)1176 static void ta8874z_setmode(struct CHIPSTATE *chip, int mode)
1177 {
1178 int update = 1;
1179 audiocmd *t = NULL;
1180 dprintk("ta8874z_setmode(): mode: 0x%02x\n", mode);
1181
1182 switch(mode){
1183 case VIDEO_SOUND_MONO:
1184 t = &ta8874z_mono;
1185 break;
1186 case VIDEO_SOUND_STEREO:
1187 t = &ta8874z_stereo;
1188 break;
1189 case VIDEO_SOUND_LANG1:
1190 t = &ta8874z_main;
1191 break;
1192 case VIDEO_SOUND_LANG2:
1193 t = &ta8874z_sub;
1194 break;
1195 default:
1196 update = 0;
1197 }
1198
1199 if(update)
1200 chip_cmd(chip, "TA8874Z", t);
1201 }
1202
ta8874z_checkit(struct CHIPSTATE * chip)1203 static int ta8874z_checkit(struct CHIPSTATE *chip)
1204 {
1205 int rc;
1206 rc = chip_read(chip);
1207 return ((rc & 0x1f) == 0x1f) ? 1 : 0;
1208 }
1209
1210 /* ---------------------------------------------------------------------- */
1211 /* audio chip descriptions - struct CHIPDESC */
1212
1213 /* insmod options to enable/disable individual audio chips */
1214 int tda8425 = 1;
1215 int tda9840 = 1;
1216 int tda9850 = 1;
1217 int tda9855 = 1;
1218 int tda9873 = 1;
1219 int tda9874a = 1;
1220 int tea6300 = 0; // address clash with msp34xx
1221 int tea6420 = 1;
1222 int pic16c54 = 1;
1223 int ta8874z = 0; // address clash with tda9840
1224
1225 MODULE_PARM(tda8425,"i");
1226 MODULE_PARM(tda9840,"i");
1227 MODULE_PARM(tda9850,"i");
1228 MODULE_PARM(tda9855,"i");
1229 MODULE_PARM(tda9873,"i");
1230 MODULE_PARM(tda9874a,"i");
1231 MODULE_PARM(tea6300,"i");
1232 MODULE_PARM(tea6420,"i");
1233 MODULE_PARM(pic16c54,"i");
1234 MODULE_PARM(ta8874z,"i");
1235
1236 static struct CHIPDESC chiplist[] = {
1237 {
1238 .name = "tda9840",
1239 .id = I2C_DRIVERID_TDA9840,
1240 .insmodopt = &tda9840,
1241 .addr_lo = I2C_TDA9840 >> 1,
1242 .addr_hi = I2C_TDA9840 >> 1,
1243 .registers = 5,
1244
1245 .getmode = tda9840_getmode,
1246 .setmode = tda9840_setmode,
1247 .checkmode = generic_checkmode,
1248
1249 .init = { 2, { TDA9840_TEST, TDA9840_TEST_INT1SN
1250 /* ,TDA9840_SW, TDA9840_MONO */} }
1251 },
1252 {
1253 .name = "tda9873h",
1254 .id = I2C_DRIVERID_TDA9873,
1255 .checkit = tda9873_checkit,
1256 .insmodopt = &tda9873,
1257 .addr_lo = I2C_TDA985x_L >> 1,
1258 .addr_hi = I2C_TDA985x_H >> 1,
1259 .registers = 3,
1260 .flags = CHIP_HAS_INPUTSEL,
1261
1262 .getmode = tda9873_getmode,
1263 .setmode = tda9873_setmode,
1264 .checkmode = generic_checkmode,
1265
1266 .init = { 4, { TDA9873_SW, 0xa4, 0x06, 0x03 } },
1267 .inputreg = TDA9873_SW,
1268 .inputmute = TDA9873_MUTE | TDA9873_AUTOMUTE,
1269 .inputmap = {0xa0, 0xa2, 0xa0, 0xa0, 0xc0},
1270 .inputmask = TDA9873_INP_MASK|TDA9873_MUTE|TDA9873_AUTOMUTE,
1271
1272 },
1273 {
1274 .name = "tda9874h/a",
1275 .id = I2C_DRIVERID_TDA9874,
1276 .checkit = tda9874a_checkit,
1277 .initialize = tda9874a_initialize,
1278 .insmodopt = &tda9874a,
1279 .addr_lo = I2C_TDA9874 >> 1,
1280 .addr_hi = I2C_TDA9874 >> 1,
1281
1282 .getmode = tda9874a_getmode,
1283 .setmode = tda9874a_setmode,
1284 .checkmode = generic_checkmode,
1285 },
1286 {
1287 .name = "tda9850",
1288 .id = I2C_DRIVERID_TDA9850,
1289 .insmodopt = &tda9850,
1290 .addr_lo = I2C_TDA985x_L >> 1,
1291 .addr_hi = I2C_TDA985x_H >> 1,
1292 .registers = 11,
1293
1294 .getmode = tda985x_getmode,
1295 .setmode = tda985x_setmode,
1296
1297 .init = { 8, { TDA9850_C4, 0x08, 0x08, TDA985x_STEREO, 0x07, 0x10, 0x10, 0x03 } }
1298 },
1299 {
1300 .name = "tda9855",
1301 .id = I2C_DRIVERID_TDA9855,
1302 .insmodopt = &tda9855,
1303 .addr_lo = I2C_TDA985x_L >> 1,
1304 .addr_hi = I2C_TDA985x_H >> 1,
1305 .registers = 11,
1306 .flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE,
1307
1308 .leftreg = TDA9855_VL,
1309 .rightreg = TDA9855_VR,
1310 .bassreg = TDA9855_BA,
1311 .treblereg = TDA9855_TR,
1312 .volfunc = tda9855_volume,
1313 .bassfunc = tda9855_bass,
1314 .treblefunc = tda9855_treble,
1315
1316 .getmode = tda985x_getmode,
1317 .setmode = tda985x_setmode,
1318
1319 .init = { 12, { 0, 0x6f, 0x6f, 0x0e, 0x07<<1, 0x8<<2,
1320 TDA9855_MUTE | TDA9855_AVL | TDA9855_LOUD | TDA9855_INT,
1321 TDA985x_STEREO | TDA9855_LINEAR | TDA9855_TZCM | TDA9855_VZCM,
1322 0x07, 0x10, 0x10, 0x03 }}
1323 },
1324 {
1325 .name = "tea6300",
1326 .id = I2C_DRIVERID_TEA6300,
1327 .insmodopt = &tea6300,
1328 .addr_lo = I2C_TEA6300 >> 1,
1329 .addr_hi = I2C_TEA6300 >> 1,
1330 .registers = 6,
1331 .flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL,
1332
1333 .leftreg = TEA6300_VR,
1334 .rightreg = TEA6300_VL,
1335 .bassreg = TEA6300_BA,
1336 .treblereg = TEA6300_TR,
1337 .volfunc = tea6300_shift10,
1338 .bassfunc = tea6300_shift12,
1339 .treblefunc = tea6300_shift12,
1340
1341 .inputreg = TEA6300_S,
1342 .inputmap = { TEA6300_S_SA, TEA6300_S_SB, TEA6300_S_SC },
1343 .inputmute = TEA6300_S_GMU,
1344 },
1345 {
1346 .name = "tea6420",
1347 .id = I2C_DRIVERID_TEA6420,
1348 .insmodopt = &tea6420,
1349 .addr_lo = I2C_TEA6420 >> 1,
1350 .addr_hi = I2C_TEA6420 >> 1,
1351 .registers = 1,
1352 .flags = CHIP_HAS_INPUTSEL,
1353
1354 .inputreg = -1,
1355 .inputmap = { TEA6420_S_SA, TEA6420_S_SB, TEA6420_S_SC },
1356 .inputmute = TEA6300_S_GMU,
1357 },
1358 {
1359 .name = "tda8425",
1360 .id = I2C_DRIVERID_TDA8425,
1361 .insmodopt = &tda8425,
1362 .addr_lo = I2C_TDA8425 >> 1,
1363 .addr_hi = I2C_TDA8425 >> 1,
1364 .registers = 9,
1365 .flags = CHIP_HAS_VOLUME | CHIP_HAS_BASSTREBLE | CHIP_HAS_INPUTSEL,
1366
1367 .leftreg = TDA8425_VL,
1368 .rightreg = TDA8425_VR,
1369 .bassreg = TDA8425_BA,
1370 .treblereg = TDA8425_TR,
1371 .volfunc = tda8425_shift10,
1372 .bassfunc = tda8425_shift12,
1373 .treblefunc = tda8425_shift12,
1374
1375 .inputreg = TDA8425_S1,
1376 .inputmap = { TDA8425_S1_CH1, TDA8425_S1_CH1, TDA8425_S1_CH1 },
1377 .inputmute = TDA8425_S1_OFF,
1378
1379 .setmode = tda8425_setmode,
1380 .initialize = tda8425_initialize,
1381 },
1382 {
1383 .name = "pic16c54 (PV951)",
1384 .id = I2C_DRIVERID_PIC16C54_PV951,
1385 .insmodopt = &pic16c54,
1386 .addr_lo = I2C_PIC16C54 >> 1,
1387 .addr_hi = I2C_PIC16C54>> 1,
1388 .registers = 2,
1389 .flags = CHIP_HAS_INPUTSEL,
1390
1391 .inputreg = PIC16C54_REG_MISC,
1392 .inputmap = {PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_TUNER,
1393 PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_LINE,
1394 PIC16C54_MISC_SND_NOTMUTE|PIC16C54_MISC_SWITCH_LINE,
1395 PIC16C54_MISC_SND_MUTE,PIC16C54_MISC_SND_MUTE,
1396 PIC16C54_MISC_SND_NOTMUTE},
1397 .inputmute = PIC16C54_MISC_SND_MUTE,
1398 },
1399 {
1400 .name = "ta8874z",
1401 .id = -1,
1402 //.id = I2C_DRIVERID_TA8874Z,
1403 .checkit = ta8874z_checkit,
1404 .insmodopt = &ta8874z,
1405 .addr_lo = I2C_TDA9840 >> 1,
1406 .addr_hi = I2C_TDA9840 >> 1,
1407 .registers = 2,
1408
1409 .getmode = ta8874z_getmode,
1410 .setmode = ta8874z_setmode,
1411 .checkmode = generic_checkmode,
1412
1413 .init = {2, { TA8874Z_MONO_SET, TA8874Z_SEPARATION_DEFAULT}},
1414 },
1415 { .name = NULL } /* EOF */
1416 };
1417
1418
1419 /* ---------------------------------------------------------------------- */
1420 /* i2c registration */
1421
chip_attach(struct i2c_adapter * adap,int addr,unsigned short flags,int kind)1422 static int chip_attach(struct i2c_adapter *adap, int addr,
1423 unsigned short flags, int kind)
1424 {
1425 struct CHIPSTATE *chip;
1426 struct CHIPDESC *desc;
1427 int rc;
1428
1429 chip = kmalloc(sizeof(*chip),GFP_KERNEL);
1430 if (!chip)
1431 return -ENOMEM;
1432 memset(chip,0,sizeof(*chip));
1433 memcpy(&chip->c,&client_template,sizeof(struct i2c_client));
1434 chip->c.adapter = adap;
1435 chip->c.addr = addr;
1436 i2c_set_clientdata(&chip->c, chip);
1437
1438 /* find description for the chip */
1439 dprintk("tvaudio: chip found @ i2c-addr=0x%x\n", addr<<1);
1440 for (desc = chiplist; desc->name != NULL; desc++) {
1441 if (0 == *(desc->insmodopt))
1442 continue;
1443 if (addr < desc->addr_lo ||
1444 addr > desc->addr_hi)
1445 continue;
1446 if (desc->checkit && !desc->checkit(chip))
1447 continue;
1448 break;
1449 }
1450 if (desc->name == NULL) {
1451 dprintk("tvaudio: no matching chip description found\n");
1452 return -EIO;
1453 }
1454 printk("tvaudio: found %s @ 0x%x\n", desc->name, addr<<1);
1455 dprintk("tvaudio: matches:%s%s%s.\n",
1456 (desc->flags & CHIP_HAS_VOLUME) ? " volume" : "",
1457 (desc->flags & CHIP_HAS_BASSTREBLE) ? " bass/treble" : "",
1458 (desc->flags & CHIP_HAS_INPUTSEL) ? " audiomux" : "");
1459
1460 /* fill required data structures */
1461 strcpy(i2c_clientname(&chip->c),desc->name);
1462 chip->type = desc-chiplist;
1463 chip->shadow.count = desc->registers+1;
1464 chip->prevmode = -1;
1465 /* register */
1466 MOD_INC_USE_COUNT;
1467 i2c_attach_client(&chip->c);
1468
1469 /* initialization */
1470 if (desc->initialize != NULL)
1471 desc->initialize(chip);
1472 else
1473 chip_cmd(chip,"init",&desc->init);
1474
1475 if (desc->flags & CHIP_HAS_VOLUME) {
1476 chip->left = desc->leftinit ? desc->leftinit : 65535;
1477 chip->right = desc->rightinit ? desc->rightinit : 65535;
1478 chip_write(chip,desc->leftreg,desc->volfunc(chip->left));
1479 chip_write(chip,desc->rightreg,desc->volfunc(chip->right));
1480 }
1481 if (desc->flags & CHIP_HAS_BASSTREBLE) {
1482 chip->treble = desc->trebleinit ? desc->trebleinit : 32768;
1483 chip->bass = desc->bassinit ? desc->bassinit : 32768;
1484 chip_write(chip,desc->bassreg,desc->bassfunc(chip->bass));
1485 chip_write(chip,desc->treblereg,desc->treblefunc(chip->treble));
1486 }
1487
1488 if (desc->checkmode) {
1489 /* start async thread */
1490 DECLARE_MUTEX_LOCKED(sem);
1491 chip->notify = &sem;
1492 init_timer(&chip->wt);
1493 chip->wt.function = chip_thread_wake;
1494 chip->wt.data = (unsigned long)chip;
1495 init_waitqueue_head(&chip->wq);
1496 rc = kernel_thread(chip_thread,(void *)chip,0);
1497 if (rc < 0)
1498 printk(KERN_WARNING "%s: kernel_thread() failed\n",
1499 i2c_clientname(&chip->c));
1500 else
1501 down(&sem);
1502 chip->notify = NULL;
1503 wake_up_interruptible(&chip->wq);
1504 }
1505 return 0;
1506 }
1507
chip_probe(struct i2c_adapter * adap)1508 static int chip_probe(struct i2c_adapter *adap)
1509 {
1510 #ifdef I2C_ADAP_CLASS_TV_ANALOG
1511 if (adap->class & I2C_ADAP_CLASS_TV_ANALOG)
1512 return i2c_probe(adap, &addr_data, chip_attach);
1513 #else
1514 switch (adap->id) {
1515 case I2C_ALGO_BIT | I2C_HW_B_BT848:
1516 case I2C_ALGO_BIT | I2C_HW_B_RIVA:
1517 case I2C_ALGO_SAA7134:
1518 return i2c_probe(adap, &addr_data, chip_attach);
1519 }
1520 #endif
1521 return 0;
1522 }
1523
chip_detach(struct i2c_client * client)1524 static int chip_detach(struct i2c_client *client)
1525 {
1526 struct CHIPSTATE *chip = i2c_get_clientdata(client);
1527
1528 del_timer(&chip->wt);
1529 if (NULL != chip->thread) {
1530 /* shutdown async thread */
1531 DECLARE_MUTEX_LOCKED(sem);
1532 chip->notify = &sem;
1533 chip->done = 1;
1534 wake_up_interruptible(&chip->wq);
1535 down(&sem);
1536 chip->notify = NULL;
1537 }
1538
1539 i2c_detach_client(&chip->c);
1540 kfree(chip);
1541 MOD_DEC_USE_COUNT;
1542 return 0;
1543 }
1544
1545 /* ---------------------------------------------------------------------- */
1546 /* video4linux interface */
1547
chip_command(struct i2c_client * client,unsigned int cmd,void * arg)1548 static int chip_command(struct i2c_client *client,
1549 unsigned int cmd, void *arg)
1550 {
1551 __u16 *sarg = arg;
1552 struct CHIPSTATE *chip = i2c_get_clientdata(client);
1553 struct CHIPDESC *desc = chiplist + chip->type;
1554
1555 dprintk("%s: chip_command 0x%x\n",i2c_clientname(&chip->c),cmd);
1556
1557 switch (cmd) {
1558 case AUDC_SET_INPUT:
1559 if (desc->flags & CHIP_HAS_INPUTSEL) {
1560 if (*sarg & 0x80)
1561 chip_write_masked(chip,desc->inputreg,desc->inputmute,desc->inputmask);
1562 else
1563 chip_write_masked(chip,desc->inputreg,desc->inputmap[*sarg],desc->inputmask);
1564 }
1565 break;
1566
1567 case AUDC_SET_RADIO:
1568 dprintk(KERN_DEBUG "tvaudio: AUDC_SET_RADIO\n");
1569 chip->norm = VIDEO_MODE_RADIO;
1570 chip->watch_stereo = 0;
1571 /* del_timer(&chip->wt); */
1572 break;
1573
1574 /* --- v4l ioctls --- */
1575 /* take care: bttv does userspace copying, we'll get a
1576 kernel pointer here... */
1577 case VIDIOCGAUDIO:
1578 {
1579 struct video_audio *va = arg;
1580
1581 if (desc->flags & CHIP_HAS_VOLUME) {
1582 va->flags |= VIDEO_AUDIO_VOLUME;
1583 va->volume = max(chip->left,chip->right);
1584 va->balance = (32768*min(chip->left,chip->right))/
1585 (va->volume ? va->volume : 1);
1586 }
1587 if (desc->flags & CHIP_HAS_BASSTREBLE) {
1588 va->flags |= VIDEO_AUDIO_BASS | VIDEO_AUDIO_TREBLE;
1589 va->bass = chip->bass;
1590 va->treble = chip->treble;
1591 }
1592 if (chip->norm != VIDEO_MODE_RADIO) {
1593 if (desc->getmode)
1594 va->mode = desc->getmode(chip);
1595 else
1596 va->mode = VIDEO_SOUND_MONO;
1597 }
1598 break;
1599 }
1600
1601 case VIDIOCSAUDIO:
1602 {
1603 struct video_audio *va = arg;
1604
1605 if (desc->flags & CHIP_HAS_VOLUME) {
1606 chip->left = (min(65536 - va->balance,32768) *
1607 va->volume) / 32768;
1608 chip->right = (min(va->balance,(__u16)32768) *
1609 va->volume) / 32768;
1610 chip_write(chip,desc->leftreg,desc->volfunc(chip->left));
1611 chip_write(chip,desc->rightreg,desc->volfunc(chip->right));
1612 }
1613 if (desc->flags & CHIP_HAS_BASSTREBLE) {
1614 chip->bass = va->bass;
1615 chip->treble = va->treble;
1616 chip_write(chip,desc->bassreg,desc->bassfunc(chip->bass));
1617 chip_write(chip,desc->treblereg,desc->treblefunc(chip->treble));
1618 }
1619 if (desc->setmode && va->mode) {
1620 chip->watch_stereo = 0;
1621 /* del_timer(&chip->wt); */
1622 chip->mode = va->mode;
1623 desc->setmode(chip,va->mode);
1624 }
1625 break;
1626 }
1627 case VIDIOCSCHAN:
1628 {
1629 struct video_channel *vc = arg;
1630
1631 dprintk(KERN_DEBUG "tvaudio: VIDIOCSCHAN\n");
1632 chip->norm = vc->norm;
1633 break;
1634 }
1635 case VIDIOCSFREQ:
1636 {
1637 chip->mode = 0; /* automatic */
1638 if (desc->checkmode && desc->setmode) {
1639 desc->setmode(chip,VIDEO_SOUND_MONO);
1640 if (chip->prevmode != VIDEO_SOUND_MONO)
1641 chip->prevmode = -1; /* reset previous mode */
1642 mod_timer(&chip->wt, jiffies+2*HZ);
1643 /* the thread will call checkmode() later */
1644 }
1645 }
1646 }
1647 return 0;
1648 }
1649
1650
1651 static struct i2c_driver driver = {
1652 .name = "generic i2c audio driver",
1653 .id = I2C_DRIVERID_TVAUDIO,
1654 .flags = I2C_DF_NOTIFY,
1655 .attach_adapter = chip_probe,
1656 .detach_client = chip_detach,
1657 .command = chip_command,
1658 };
1659
1660 static struct i2c_client client_template =
1661 {
1662 I2C_DEVNAME("(unset)"),
1663 .flags = I2C_CLIENT_ALLOW_USE,
1664 .driver = &driver,
1665 };
1666
audiochip_init_module(void)1667 static int audiochip_init_module(void)
1668 {
1669 struct CHIPDESC *desc;
1670 printk(KERN_INFO "tvaudio: TV audio decoder + audio/video mux driver\n");
1671 printk(KERN_INFO "tvaudio: known chips: ");
1672 for (desc = chiplist; desc->name != NULL; desc++)
1673 printk("%s%s", (desc == chiplist) ? "" : ",",desc->name);
1674 printk("\n");
1675 i2c_add_driver(&driver);
1676 return 0;
1677 }
1678
audiochip_cleanup_module(void)1679 static void audiochip_cleanup_module(void)
1680 {
1681 i2c_del_driver(&driver);
1682 }
1683
1684 module_init(audiochip_init_module);
1685 module_exit(audiochip_cleanup_module);
1686
1687 /*
1688 * Local variables:
1689 * c-basic-offset: 8
1690 * End:
1691 */
1692