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-rw-r--r--sound/soc/codecs/wm8804.c833
1 files changed, 833 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8804.c b/sound/soc/codecs/wm8804.c
new file mode 100644
index 000000000000..4599e8e95aa2
--- /dev/null
+++ b/sound/soc/codecs/wm8804.c
@@ -0,0 +1,833 @@
1/*
2 * wm8804.c -- WM8804 S/PDIF transceiver driver
3 *
4 * Copyright 2010 Wolfson Microelectronics plc
5 *
6 * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/init.h>
16#include <linux/delay.h>
17#include <linux/pm.h>
18#include <linux/i2c.h>
19#include <linux/spi/spi.h>
20#include <linux/regulator/consumer.h>
21#include <linux/slab.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/soc-dapm.h>
27#include <sound/initval.h>
28#include <sound/tlv.h>
29
30#include "wm8804.h"
31
32#define WM8804_NUM_SUPPLIES 2
33static const char *wm8804_supply_names[WM8804_NUM_SUPPLIES] = {
34 "PVDD",
35 "DVDD"
36};
37
38static const u8 wm8804_reg_defs[] = {
39 0x05, /* R0 - RST/DEVID1 */
40 0x88, /* R1 - DEVID2 */
41 0x04, /* R2 - DEVREV */
42 0x21, /* R3 - PLL1 */
43 0xFD, /* R4 - PLL2 */
44 0x36, /* R5 - PLL3 */
45 0x07, /* R6 - PLL4 */
46 0x16, /* R7 - PLL5 */
47 0x18, /* R8 - PLL6 */
48 0xFF, /* R9 - SPDMODE */
49 0x00, /* R10 - INTMASK */
50 0x00, /* R11 - INTSTAT */
51 0x00, /* R12 - SPDSTAT */
52 0x00, /* R13 - RXCHAN1 */
53 0x00, /* R14 - RXCHAN2 */
54 0x00, /* R15 - RXCHAN3 */
55 0x00, /* R16 - RXCHAN4 */
56 0x00, /* R17 - RXCHAN5 */
57 0x00, /* R18 - SPDTX1 */
58 0x00, /* R19 - SPDTX2 */
59 0x00, /* R20 - SPDTX3 */
60 0x71, /* R21 - SPDTX4 */
61 0x0B, /* R22 - SPDTX5 */
62 0x70, /* R23 - GPO0 */
63 0x57, /* R24 - GPO1 */
64 0x00, /* R25 */
65 0x42, /* R26 - GPO2 */
66 0x06, /* R27 - AIFTX */
67 0x06, /* R28 - AIFRX */
68 0x80, /* R29 - SPDRX1 */
69 0x07, /* R30 - PWRDN */
70};
71
72struct wm8804_priv {
73 enum snd_soc_control_type control_type;
74 struct regulator_bulk_data supplies[WM8804_NUM_SUPPLIES];
75 struct notifier_block disable_nb[WM8804_NUM_SUPPLIES];
76 struct snd_soc_codec *codec;
77};
78
79static int txsrc_get(struct snd_kcontrol *kcontrol,
80 struct snd_ctl_elem_value *ucontrol);
81
82static int txsrc_put(struct snd_kcontrol *kcontrol,
83 struct snd_ctl_elem_value *ucontrol);
84
85/*
86 * We can't use the same notifier block for more than one supply and
87 * there's no way I can see to get from a callback to the caller
88 * except container_of().
89 */
90#define WM8804_REGULATOR_EVENT(n) \
91static int wm8804_regulator_event_##n(struct notifier_block *nb, \
92 unsigned long event, void *data) \
93{ \
94 struct wm8804_priv *wm8804 = container_of(nb, struct wm8804_priv, \
95 disable_nb[n]); \
96 if (event & REGULATOR_EVENT_DISABLE) { \
97 wm8804->codec->cache_sync = 1; \
98 } \
99 return 0; \
100}
101
102WM8804_REGULATOR_EVENT(0)
103WM8804_REGULATOR_EVENT(1)
104
105static const char *txsrc_text[] = { "S/PDIF RX", "AIF" };
106static const SOC_ENUM_SINGLE_EXT_DECL(txsrc, txsrc_text);
107
108static const struct snd_kcontrol_new wm8804_snd_controls[] = {
109 SOC_ENUM_EXT("Input Source", txsrc, txsrc_get, txsrc_put),
110 SOC_SINGLE("TX Playback Switch", WM8804_PWRDN, 2, 1, 1),
111 SOC_SINGLE("AIF Playback Switch", WM8804_PWRDN, 4, 1, 1)
112};
113
114static int txsrc_get(struct snd_kcontrol *kcontrol,
115 struct snd_ctl_elem_value *ucontrol)
116{
117 struct snd_soc_codec *codec;
118 unsigned int src;
119
120 codec = snd_kcontrol_chip(kcontrol);
121 src = snd_soc_read(codec, WM8804_SPDTX4);
122 if (src & 0x40)
123 ucontrol->value.integer.value[0] = 1;
124 else
125 ucontrol->value.integer.value[0] = 0;
126
127 return 0;
128}
129
130static int txsrc_put(struct snd_kcontrol *kcontrol,
131 struct snd_ctl_elem_value *ucontrol)
132{
133 struct snd_soc_codec *codec;
134 unsigned int src, txpwr;
135
136 codec = snd_kcontrol_chip(kcontrol);
137
138 if (ucontrol->value.integer.value[0] != 0
139 && ucontrol->value.integer.value[0] != 1)
140 return -EINVAL;
141
142 src = snd_soc_read(codec, WM8804_SPDTX4);
143 switch ((src & 0x40) >> 6) {
144 case 0:
145 if (!ucontrol->value.integer.value[0])
146 return 0;
147 break;
148 case 1:
149 if (ucontrol->value.integer.value[1])
150 return 0;
151 break;
152 }
153
154 /* save the current power state of the transmitter */
155 txpwr = snd_soc_read(codec, WM8804_PWRDN) & 0x4;
156 /* power down the transmitter */
157 snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x4);
158 /* set the tx source */
159 snd_soc_update_bits(codec, WM8804_SPDTX4, 0x40,
160 ucontrol->value.integer.value[0] << 6);
161
162 if (ucontrol->value.integer.value[0]) {
163 /* power down the receiver */
164 snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0x2);
165 /* power up the AIF */
166 snd_soc_update_bits(codec, WM8804_PWRDN, 0x10, 0);
167 } else {
168 /* don't power down the AIF -- may be used as an output */
169 /* power up the receiver */
170 snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0);
171 }
172
173 /* restore the transmitter's configuration */
174 snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, txpwr);
175
176 return 0;
177}
178
179static int wm8804_volatile(unsigned int reg)
180{
181 switch (reg) {
182 case WM8804_RST_DEVID1:
183 case WM8804_DEVID2:
184 case WM8804_DEVREV:
185 case WM8804_INTSTAT:
186 case WM8804_SPDSTAT:
187 case WM8804_RXCHAN1:
188 case WM8804_RXCHAN2:
189 case WM8804_RXCHAN3:
190 case WM8804_RXCHAN4:
191 case WM8804_RXCHAN5:
192 return 1;
193 default:
194 break;
195 }
196
197 return 0;
198}
199
200static int wm8804_reset(struct snd_soc_codec *codec)
201{
202 return snd_soc_write(codec, WM8804_RST_DEVID1, 0x0);
203}
204
205static int wm8804_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
206{
207 struct snd_soc_codec *codec;
208 u16 format, master, bcp, lrp;
209
210 codec = dai->codec;
211
212 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
213 case SND_SOC_DAIFMT_I2S:
214 format = 0x2;
215 break;
216 case SND_SOC_DAIFMT_RIGHT_J:
217 format = 0x0;
218 break;
219 case SND_SOC_DAIFMT_LEFT_J:
220 format = 0x1;
221 break;
222 case SND_SOC_DAIFMT_DSP_A:
223 case SND_SOC_DAIFMT_DSP_B:
224 format = 0x3;
225 break;
226 default:
227 dev_err(dai->dev, "Unknown dai format\n");
228 return -EINVAL;
229 }
230
231 /* set data format */
232 snd_soc_update_bits(codec, WM8804_AIFTX, 0x3, format);
233 snd_soc_update_bits(codec, WM8804_AIFRX, 0x3, format);
234
235 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
236 case SND_SOC_DAIFMT_CBM_CFM:
237 master = 1;
238 break;
239 case SND_SOC_DAIFMT_CBS_CFS:
240 master = 0;
241 break;
242 default:
243 dev_err(dai->dev, "Unknown master/slave configuration\n");
244 return -EINVAL;
245 }
246
247 /* set master/slave mode */
248 snd_soc_update_bits(codec, WM8804_AIFRX, 0x40, master << 6);
249
250 bcp = lrp = 0;
251 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
252 case SND_SOC_DAIFMT_NB_NF:
253 break;
254 case SND_SOC_DAIFMT_IB_IF:
255 bcp = lrp = 1;
256 break;
257 case SND_SOC_DAIFMT_IB_NF:
258 bcp = 1;
259 break;
260 case SND_SOC_DAIFMT_NB_IF:
261 lrp = 1;
262 break;
263 default:
264 dev_err(dai->dev, "Unknown polarity configuration\n");
265 return -EINVAL;
266 }
267
268 /* set frame inversion */
269 snd_soc_update_bits(codec, WM8804_AIFTX, 0x10 | 0x20,
270 (bcp << 4) | (lrp << 5));
271 snd_soc_update_bits(codec, WM8804_AIFRX, 0x10 | 0x20,
272 (bcp << 4) | (lrp << 5));
273 return 0;
274}
275
276static int wm8804_hw_params(struct snd_pcm_substream *substream,
277 struct snd_pcm_hw_params *params,
278 struct snd_soc_dai *dai)
279{
280 struct snd_soc_codec *codec;
281 u16 blen;
282
283 codec = dai->codec;
284
285 switch (params_format(params)) {
286 case SNDRV_PCM_FORMAT_S16_LE:
287 blen = 0x0;
288 break;
289 case SNDRV_PCM_FORMAT_S20_3LE:
290 blen = 0x1;
291 break;
292 case SNDRV_PCM_FORMAT_S24_LE:
293 blen = 0x2;
294 break;
295 default:
296 dev_err(dai->dev, "Unsupported word length: %u\n",
297 params_format(params));
298 return -EINVAL;
299 }
300
301 /* set word length */
302 snd_soc_update_bits(codec, WM8804_AIFTX, 0xc, blen << 2);
303 snd_soc_update_bits(codec, WM8804_AIFRX, 0xc, blen << 2);
304
305 return 0;
306}
307
308struct pll_div {
309 u32 prescale:1;
310 u32 mclkdiv:1;
311 u32 freqmode:2;
312 u32 n:4;
313 u32 k:22;
314};
315
316/* PLL rate to output rate divisions */
317static struct {
318 unsigned int div;
319 unsigned int freqmode;
320 unsigned int mclkdiv;
321} post_table[] = {
322 { 2, 0, 0 },
323 { 4, 0, 1 },
324 { 4, 1, 0 },
325 { 8, 1, 1 },
326 { 8, 2, 0 },
327 { 16, 2, 1 },
328 { 12, 3, 0 },
329 { 24, 3, 1 }
330};
331
332#define FIXED_PLL_SIZE ((1ULL << 22) * 10)
333static int pll_factors(struct pll_div *pll_div, unsigned int target,
334 unsigned int source)
335{
336 u64 Kpart;
337 unsigned long int K, Ndiv, Nmod, tmp;
338 int i;
339
340 /*
341 * Scale the output frequency up; the PLL should run in the
342 * region of 90-100MHz.
343 */
344 for (i = 0; i < ARRAY_SIZE(post_table); i++) {
345 tmp = target * post_table[i].div;
346 if (tmp >= 90000000 && tmp <= 100000000) {
347 pll_div->freqmode = post_table[i].freqmode;
348 pll_div->mclkdiv = post_table[i].mclkdiv;
349 target *= post_table[i].div;
350 break;
351 }
352 }
353
354 if (i == ARRAY_SIZE(post_table)) {
355 pr_err("%s: Unable to scale output frequency: %uHz\n",
356 __func__, target);
357 return -EINVAL;
358 }
359
360 pll_div->prescale = 0;
361 Ndiv = target / source;
362 if (Ndiv < 5) {
363 source >>= 1;
364 pll_div->prescale = 1;
365 Ndiv = target / source;
366 }
367
368 if (Ndiv < 5 || Ndiv > 13) {
369 pr_err("%s: WM8804 N value is not within the recommended range: %lu\n",
370 __func__, Ndiv);
371 return -EINVAL;
372 }
373 pll_div->n = Ndiv;
374
375 Nmod = target % source;
376 Kpart = FIXED_PLL_SIZE * (u64)Nmod;
377
378 do_div(Kpart, source);
379
380 K = Kpart & 0xffffffff;
381 if ((K % 10) >= 5)
382 K += 5;
383 K /= 10;
384 pll_div->k = K;
385
386 return 0;
387}
388
389static int wm8804_set_pll(struct snd_soc_dai *dai, int pll_id,
390 int source, unsigned int freq_in,
391 unsigned int freq_out)
392{
393 struct snd_soc_codec *codec;
394
395 codec = dai->codec;
396 if (!freq_in || !freq_out) {
397 /* disable the PLL */
398 snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1);
399 return 0;
400 } else {
401 int ret;
402 struct pll_div pll_div;
403
404 ret = pll_factors(&pll_div, freq_out, freq_in);
405 if (ret)
406 return ret;
407
408 /* power down the PLL before reprogramming it */
409 snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1);
410
411 if (!freq_in || !freq_out)
412 return 0;
413
414 /* set PLLN and PRESCALE */
415 snd_soc_update_bits(codec, WM8804_PLL4, 0xf | 0x10,
416 pll_div.n | (pll_div.prescale << 4));
417 /* set mclkdiv and freqmode */
418 snd_soc_update_bits(codec, WM8804_PLL5, 0x3 | 0x8,
419 pll_div.freqmode | (pll_div.mclkdiv << 3));
420 /* set PLLK */
421 snd_soc_write(codec, WM8804_PLL1, pll_div.k & 0xff);
422 snd_soc_write(codec, WM8804_PLL2, (pll_div.k >> 8) & 0xff);
423 snd_soc_write(codec, WM8804_PLL3, pll_div.k >> 16);
424
425 /* power up the PLL */
426 snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0);
427 }
428
429 return 0;
430}
431
432static int wm8804_set_sysclk(struct snd_soc_dai *dai,
433 int clk_id, unsigned int freq, int dir)
434{
435 struct snd_soc_codec *codec;
436
437 codec = dai->codec;
438
439 switch (clk_id) {
440 case WM8804_TX_CLKSRC_MCLK:
441 if ((freq >= 10000000 && freq <= 14400000)
442 || (freq >= 16280000 && freq <= 27000000))
443 snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0x80);
444 else {
445 dev_err(dai->dev, "OSCCLOCK is not within the "
446 "recommended range: %uHz\n", freq);
447 return -EINVAL;
448 }
449 break;
450 case WM8804_TX_CLKSRC_PLL:
451 snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0);
452 break;
453 case WM8804_CLKOUT_SRC_CLK1:
454 snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0);
455 break;
456 case WM8804_CLKOUT_SRC_OSCCLK:
457 snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0x8);
458 break;
459 default:
460 dev_err(dai->dev, "Unknown clock source: %d\n", clk_id);
461 return -EINVAL;
462 }
463
464 return 0;
465}
466
467static int wm8804_set_clkdiv(struct snd_soc_dai *dai,
468 int div_id, int div)
469{
470 struct snd_soc_codec *codec;
471
472 codec = dai->codec;
473 switch (div_id) {
474 case WM8804_CLKOUT_DIV:
475 snd_soc_update_bits(codec, WM8804_PLL5, 0x30,
476 (div & 0x3) << 4);
477 break;
478 default:
479 dev_err(dai->dev, "Unknown clock divider: %d\n", div_id);
480 return -EINVAL;
481 }
482 return 0;
483}
484
485static void wm8804_sync_cache(struct snd_soc_codec *codec)
486{
487 short i;
488 u8 *cache;
489
490 if (!codec->cache_sync)
491 return;
492
493 codec->cache_only = 0;
494 cache = codec->reg_cache;
495 for (i = 0; i < codec->driver->reg_cache_size; i++) {
496 if (i == WM8804_RST_DEVID1 || cache[i] == wm8804_reg_defs[i])
497 continue;
498 snd_soc_write(codec, i, cache[i]);
499 }
500 codec->cache_sync = 0;
501}
502
503static int wm8804_set_bias_level(struct snd_soc_codec *codec,
504 enum snd_soc_bias_level level)
505{
506 int ret;
507 struct wm8804_priv *wm8804;
508
509 wm8804 = snd_soc_codec_get_drvdata(codec);
510 switch (level) {
511 case SND_SOC_BIAS_ON:
512 break;
513 case SND_SOC_BIAS_PREPARE:
514 /* power up the OSC and the PLL */
515 snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
516 break;
517 case SND_SOC_BIAS_STANDBY:
518 if (codec->bias_level == SND_SOC_BIAS_OFF) {
519 ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies),
520 wm8804->supplies);
521 if (ret) {
522 dev_err(codec->dev,
523 "Failed to enable supplies: %d\n",
524 ret);
525 return ret;
526 }
527 wm8804_sync_cache(codec);
528 }
529 /* power down the OSC and the PLL */
530 snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9);
531 break;
532 case SND_SOC_BIAS_OFF:
533 /* power down the OSC and the PLL */
534 snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9);
535 regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies),
536 wm8804->supplies);
537 break;
538 }
539
540 codec->bias_level = level;
541 return 0;
542}
543
544#ifdef CONFIG_PM
545static int wm8804_suspend(struct snd_soc_codec *codec, pm_message_t state)
546{
547 wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF);
548 return 0;
549}
550
551static int wm8804_resume(struct snd_soc_codec *codec)
552{
553 wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
554 return 0;
555}
556#else
557#define wm8804_suspend NULL
558#define wm8804_resume NULL
559#endif
560
561static int wm8804_remove(struct snd_soc_codec *codec)
562{
563 struct wm8804_priv *wm8804;
564 int i;
565
566 wm8804 = snd_soc_codec_get_drvdata(codec);
567 wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF);
568
569 for (i = 0; i < ARRAY_SIZE(wm8804->supplies); ++i)
570 regulator_unregister_notifier(wm8804->supplies[i].consumer,
571 &wm8804->disable_nb[i]);
572 regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies);
573 return 0;
574}
575
576static int wm8804_probe(struct snd_soc_codec *codec)
577{
578 struct wm8804_priv *wm8804;
579 int i, id1, id2, ret;
580
581 wm8804 = snd_soc_codec_get_drvdata(codec);
582 wm8804->codec = codec;
583
584 codec->idle_bias_off = 1;
585
586 ret = snd_soc_codec_set_cache_io(codec, 8, 8, wm8804->control_type);
587 if (ret < 0) {
588 dev_err(codec->dev, "Failed to set cache i/o: %d\n", ret);
589 return ret;
590 }
591
592 for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++)
593 wm8804->supplies[i].supply = wm8804_supply_names[i];
594
595 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8804->supplies),
596 wm8804->supplies);
597 if (ret) {
598 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
599 return ret;
600 }
601
602 wm8804->disable_nb[0].notifier_call = wm8804_regulator_event_0;
603 wm8804->disable_nb[1].notifier_call = wm8804_regulator_event_1;
604
605 /* This should really be moved into the regulator core */
606 for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) {
607 ret = regulator_register_notifier(wm8804->supplies[i].consumer,
608 &wm8804->disable_nb[i]);
609 if (ret != 0) {
610 dev_err(codec->dev,
611 "Failed to register regulator notifier: %d\n",
612 ret);
613 }
614 }
615
616 ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies),
617 wm8804->supplies);
618 if (ret) {
619 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
620 goto err_reg_get;
621 }
622
623 id1 = snd_soc_read(codec, WM8804_RST_DEVID1);
624 if (id1 < 0) {
625 dev_err(codec->dev, "Failed to read device ID: %d\n", id1);
626 ret = id1;
627 goto err_reg_enable;
628 }
629
630 id2 = snd_soc_read(codec, WM8804_DEVID2);
631 if (id2 < 0) {
632 dev_err(codec->dev, "Failed to read device ID: %d\n", id2);
633 ret = id2;
634 goto err_reg_enable;
635 }
636
637 id2 = (id2 << 8) | id1;
638
639 if (id2 != ((wm8804_reg_defs[WM8804_DEVID2] << 8)
640 | wm8804_reg_defs[WM8804_RST_DEVID1])) {
641 dev_err(codec->dev, "Invalid device ID: %#x\n", id2);
642 ret = -EINVAL;
643 goto err_reg_enable;
644 }
645
646 ret = snd_soc_read(codec, WM8804_DEVREV);
647 if (ret < 0) {
648 dev_err(codec->dev, "Failed to read device revision: %d\n",
649 ret);
650 goto err_reg_enable;
651 }
652 dev_info(codec->dev, "revision %c\n", ret + 'A');
653
654 ret = wm8804_reset(codec);
655 if (ret < 0) {
656 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
657 goto err_reg_enable;
658 }
659
660 wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
661
662 snd_soc_add_controls(codec, wm8804_snd_controls,
663 ARRAY_SIZE(wm8804_snd_controls));
664 return 0;
665
666err_reg_enable:
667 regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), wm8804->supplies);
668err_reg_get:
669 regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies);
670 return ret;
671}
672
673static struct snd_soc_dai_ops wm8804_dai_ops = {
674 .hw_params = wm8804_hw_params,
675 .set_fmt = wm8804_set_fmt,
676 .set_sysclk = wm8804_set_sysclk,
677 .set_clkdiv = wm8804_set_clkdiv,
678 .set_pll = wm8804_set_pll
679};
680
681#define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
682 SNDRV_PCM_FMTBIT_S24_LE)
683
684static struct snd_soc_dai_driver wm8804_dai = {
685 .name = "wm8804-spdif",
686 .playback = {
687 .stream_name = "Playback",
688 .channels_min = 2,
689 .channels_max = 2,
690 .rates = SNDRV_PCM_RATE_8000_192000,
691 .formats = WM8804_FORMATS,
692 },
693 .capture = {
694 .stream_name = "Capture",
695 .channels_min = 2,
696 .channels_max = 2,
697 .rates = SNDRV_PCM_RATE_8000_192000,
698 .formats = WM8804_FORMATS,
699 },
700 .ops = &wm8804_dai_ops,
701 .symmetric_rates = 1
702};
703
704static struct snd_soc_codec_driver soc_codec_dev_wm8804 = {
705 .probe = wm8804_probe,
706 .remove = wm8804_remove,
707 .suspend = wm8804_suspend,
708 .resume = wm8804_resume,
709 .set_bias_level = wm8804_set_bias_level,
710 .reg_cache_size = ARRAY_SIZE(wm8804_reg_defs),
711 .reg_word_size = sizeof(u8),
712 .reg_cache_default = wm8804_reg_defs,
713 .volatile_register = wm8804_volatile
714};
715
716#if defined(CONFIG_SPI_MASTER)
717static int __devinit wm8804_spi_probe(struct spi_device *spi)
718{
719 struct wm8804_priv *wm8804;
720 int ret;
721
722 wm8804 = kzalloc(sizeof *wm8804, GFP_KERNEL);
723 if (!wm8804)
724 return -ENOMEM;
725
726 wm8804->control_type = SND_SOC_SPI;
727 spi_set_drvdata(spi, wm8804);
728
729 ret = snd_soc_register_codec(&spi->dev,
730 &soc_codec_dev_wm8804, &wm8804_dai, 1);
731 if (ret < 0)
732 kfree(wm8804);
733 return ret;
734}
735
736static int __devexit wm8804_spi_remove(struct spi_device *spi)
737{
738 snd_soc_unregister_codec(&spi->dev);
739 kfree(spi_get_drvdata(spi));
740 return 0;
741}
742
743static struct spi_driver wm8804_spi_driver = {
744 .driver = {
745 .name = "wm8804",
746 .owner = THIS_MODULE,
747 },
748 .probe = wm8804_spi_probe,
749 .remove = __devexit_p(wm8804_spi_remove)
750};
751#endif
752
753#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
754static __devinit int wm8804_i2c_probe(struct i2c_client *i2c,
755 const struct i2c_device_id *id)
756{
757 struct wm8804_priv *wm8804;
758 int ret;
759
760 wm8804 = kzalloc(sizeof *wm8804, GFP_KERNEL);
761 if (!wm8804)
762 return -ENOMEM;
763
764 wm8804->control_type = SND_SOC_I2C;
765 i2c_set_clientdata(i2c, wm8804);
766
767 ret = snd_soc_register_codec(&i2c->dev,
768 &soc_codec_dev_wm8804, &wm8804_dai, 1);
769 if (ret < 0)
770 kfree(wm8804);
771 return ret;
772}
773
774static __devexit int wm8804_i2c_remove(struct i2c_client *client)
775{
776 snd_soc_unregister_codec(&client->dev);
777 kfree(i2c_get_clientdata(client));
778 return 0;
779}
780
781static const struct i2c_device_id wm8804_i2c_id[] = {
782 { "wm8804", 0 },
783 { }
784};
785MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
786
787static struct i2c_driver wm8804_i2c_driver = {
788 .driver = {
789 .name = "wm8804",
790 .owner = THIS_MODULE,
791 },
792 .probe = wm8804_i2c_probe,
793 .remove = __devexit_p(wm8804_i2c_remove),
794 .id_table = wm8804_i2c_id
795};
796#endif
797
798static int __init wm8804_modinit(void)
799{
800 int ret = 0;
801
802#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
803 ret = i2c_add_driver(&wm8804_i2c_driver);
804 if (ret) {
805 printk(KERN_ERR "Failed to register wm8804 I2C driver: %d\n",
806 ret);
807 }
808#endif
809#if defined(CONFIG_SPI_MASTER)
810 ret = spi_register_driver(&wm8804_spi_driver);
811 if (ret != 0) {
812 printk(KERN_ERR "Failed to register wm8804 SPI driver: %d\n",
813 ret);
814 }
815#endif
816 return ret;
817}
818module_init(wm8804_modinit);
819
820static void __exit wm8804_exit(void)
821{
822#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
823 i2c_del_driver(&wm8804_i2c_driver);
824#endif
825#if defined(CONFIG_SPI_MASTER)
826 spi_unregister_driver(&wm8804_spi_driver);
827#endif
828}
829module_exit(wm8804_exit);
830
831MODULE_DESCRIPTION("ASoC WM8804 driver");
832MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
833MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 00:40:32 -0500