Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.git] / sound / soc / codecs / wm8711.c
1 /*
2 * wm8711.c -- WM8711 ALSA SoC Audio driver
3 *
4 * Copyright 2006 Wolfson Microelectronics
5 *
6 * Author: Mike Arthur <linux@wolfsonmicro.com>
7 *
8 * Based on wm8731.c by Richard Purdie
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/pm.h>
20 #include <linux/i2c.h>
21 #include <linux/platform_device.h>
22 #include <linux/spi/spi.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/tlv.h>
29 #include <sound/initval.h>
30
31 #include "wm8711.h"
32
33 static struct snd_soc_codec *wm8711_codec;
34
35 /* codec private data */
36 struct wm8711_priv {
37 struct snd_soc_codec codec;
38 u16 reg_cache[WM8711_CACHEREGNUM];
39 unsigned int sysclk;
40 };
41
42 /*
43 * wm8711 register cache
44 * We can't read the WM8711 register space when we are
45 * using 2 wire for device control, so we cache them instead.
46 * There is no point in caching the reset register
47 */
48 static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
49 0x0079, 0x0079, 0x000a, 0x0008,
50 0x009f, 0x000a, 0x0000, 0x0000
51 };
52
53 #define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
54
55 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
56
57 static const struct snd_kcontrol_new wm8711_snd_controls[] = {
58
59 SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
60 0, 127, 0, out_tlv),
61 SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
62 7, 1, 0),
63
64 };
65
66 /* Output Mixer */
67 static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
68 SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
69 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
70 };
71
72 static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
73 SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
74 &wm8711_output_mixer_controls[0],
75 ARRAY_SIZE(wm8711_output_mixer_controls)),
76 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
77 SND_SOC_DAPM_OUTPUT("LOUT"),
78 SND_SOC_DAPM_OUTPUT("LHPOUT"),
79 SND_SOC_DAPM_OUTPUT("ROUT"),
80 SND_SOC_DAPM_OUTPUT("RHPOUT"),
81 };
82
83 static const struct snd_soc_dapm_route intercon[] = {
84 /* output mixer */
85 {"Output Mixer", "Line Bypass Switch", "Line Input"},
86 {"Output Mixer", "HiFi Playback Switch", "DAC"},
87
88 /* outputs */
89 {"RHPOUT", NULL, "Output Mixer"},
90 {"ROUT", NULL, "Output Mixer"},
91 {"LHPOUT", NULL, "Output Mixer"},
92 {"LOUT", NULL, "Output Mixer"},
93 };
94
95 static int wm8711_add_widgets(struct snd_soc_codec *codec)
96 {
97 snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets,
98 ARRAY_SIZE(wm8711_dapm_widgets));
99
100 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
101
102 return 0;
103 }
104
105 struct _coeff_div {
106 u32 mclk;
107 u32 rate;
108 u16 fs;
109 u8 sr:4;
110 u8 bosr:1;
111 u8 usb:1;
112 };
113
114 /* codec mclk clock divider coefficients */
115 static const struct _coeff_div coeff_div[] = {
116 /* 48k */
117 {12288000, 48000, 256, 0x0, 0x0, 0x0},
118 {18432000, 48000, 384, 0x0, 0x1, 0x0},
119 {12000000, 48000, 250, 0x0, 0x0, 0x1},
120
121 /* 32k */
122 {12288000, 32000, 384, 0x6, 0x0, 0x0},
123 {18432000, 32000, 576, 0x6, 0x1, 0x0},
124 {12000000, 32000, 375, 0x6, 0x0, 0x1},
125
126 /* 8k */
127 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
128 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
129 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
130 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
131 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
132
133 /* 96k */
134 {12288000, 96000, 128, 0x7, 0x0, 0x0},
135 {18432000, 96000, 192, 0x7, 0x1, 0x0},
136 {12000000, 96000, 125, 0x7, 0x0, 0x1},
137
138 /* 44.1k */
139 {11289600, 44100, 256, 0x8, 0x0, 0x0},
140 {16934400, 44100, 384, 0x8, 0x1, 0x0},
141 {12000000, 44100, 272, 0x8, 0x1, 0x1},
142
143 /* 88.2k */
144 {11289600, 88200, 128, 0xf, 0x0, 0x0},
145 {16934400, 88200, 192, 0xf, 0x1, 0x0},
146 {12000000, 88200, 136, 0xf, 0x1, 0x1},
147 };
148
149 static inline int get_coeff(int mclk, int rate)
150 {
151 int i;
152
153 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
154 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
155 return i;
156 }
157 return 0;
158 }
159
160 static int wm8711_hw_params(struct snd_pcm_substream *substream,
161 struct snd_pcm_hw_params *params,
162 struct snd_soc_dai *dai)
163 {
164 struct snd_soc_codec *codec = dai->codec;
165 struct wm8711_priv *wm8711 = codec->private_data;
166 u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
167 int i = get_coeff(wm8711->sysclk, params_rate(params));
168 u16 srate = (coeff_div[i].sr << 2) |
169 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
170
171 snd_soc_write(codec, WM8711_SRATE, srate);
172
173 /* bit size */
174 switch (params_format(params)) {
175 case SNDRV_PCM_FORMAT_S16_LE:
176 break;
177 case SNDRV_PCM_FORMAT_S20_3LE:
178 iface |= 0x0004;
179 break;
180 case SNDRV_PCM_FORMAT_S24_LE:
181 iface |= 0x0008;
182 break;
183 }
184
185 snd_soc_write(codec, WM8711_IFACE, iface);
186 return 0;
187 }
188
189 static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
190 struct snd_soc_dai *dai)
191 {
192 struct snd_soc_codec *codec = dai->codec;
193
194 /* set active */
195 snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
196
197 return 0;
198 }
199
200 static void wm8711_shutdown(struct snd_pcm_substream *substream,
201 struct snd_soc_dai *dai)
202 {
203 struct snd_soc_codec *codec = dai->codec;
204
205 /* deactivate */
206 if (!codec->active) {
207 udelay(50);
208 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
209 }
210 }
211
212 static int wm8711_mute(struct snd_soc_dai *dai, int mute)
213 {
214 struct snd_soc_codec *codec = dai->codec;
215 u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
216
217 if (mute)
218 snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8);
219 else
220 snd_soc_write(codec, WM8711_APDIGI, mute_reg);
221
222 return 0;
223 }
224
225 static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
226 int clk_id, unsigned int freq, int dir)
227 {
228 struct snd_soc_codec *codec = codec_dai->codec;
229 struct wm8711_priv *wm8711 = codec->private_data;
230
231 switch (freq) {
232 case 11289600:
233 case 12000000:
234 case 12288000:
235 case 16934400:
236 case 18432000:
237 wm8711->sysclk = freq;
238 return 0;
239 }
240 return -EINVAL;
241 }
242
243 static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
244 unsigned int fmt)
245 {
246 struct snd_soc_codec *codec = codec_dai->codec;
247 u16 iface = 0;
248
249 /* set master/slave audio interface */
250 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
251 case SND_SOC_DAIFMT_CBM_CFM:
252 iface |= 0x0040;
253 break;
254 case SND_SOC_DAIFMT_CBS_CFS:
255 break;
256 default:
257 return -EINVAL;
258 }
259
260 /* interface format */
261 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
262 case SND_SOC_DAIFMT_I2S:
263 iface |= 0x0002;
264 break;
265 case SND_SOC_DAIFMT_RIGHT_J:
266 break;
267 case SND_SOC_DAIFMT_LEFT_J:
268 iface |= 0x0001;
269 break;
270 case SND_SOC_DAIFMT_DSP_A:
271 iface |= 0x0003;
272 break;
273 case SND_SOC_DAIFMT_DSP_B:
274 iface |= 0x0013;
275 break;
276 default:
277 return -EINVAL;
278 }
279
280 /* clock inversion */
281 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
282 case SND_SOC_DAIFMT_NB_NF:
283 break;
284 case SND_SOC_DAIFMT_IB_IF:
285 iface |= 0x0090;
286 break;
287 case SND_SOC_DAIFMT_IB_NF:
288 iface |= 0x0080;
289 break;
290 case SND_SOC_DAIFMT_NB_IF:
291 iface |= 0x0010;
292 break;
293 default:
294 return -EINVAL;
295 }
296
297 /* set iface */
298 snd_soc_write(codec, WM8711_IFACE, iface);
299 return 0;
300 }
301
302
303 static int wm8711_set_bias_level(struct snd_soc_codec *codec,
304 enum snd_soc_bias_level level)
305 {
306 u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
307
308 switch (level) {
309 case SND_SOC_BIAS_ON:
310 snd_soc_write(codec, WM8711_PWR, reg);
311 break;
312 case SND_SOC_BIAS_PREPARE:
313 break;
314 case SND_SOC_BIAS_STANDBY:
315 snd_soc_write(codec, WM8711_PWR, reg | 0x0040);
316 break;
317 case SND_SOC_BIAS_OFF:
318 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
319 snd_soc_write(codec, WM8711_PWR, 0xffff);
320 break;
321 }
322 codec->bias_level = level;
323 return 0;
324 }
325
326 #define WM8711_RATES SNDRV_PCM_RATE_8000_96000
327
328 #define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
329 SNDRV_PCM_FMTBIT_S24_LE)
330
331 static struct snd_soc_dai_ops wm8711_ops = {
332 .prepare = wm8711_pcm_prepare,
333 .hw_params = wm8711_hw_params,
334 .shutdown = wm8711_shutdown,
335 .digital_mute = wm8711_mute,
336 .set_sysclk = wm8711_set_dai_sysclk,
337 .set_fmt = wm8711_set_dai_fmt,
338 };
339
340 struct snd_soc_dai wm8711_dai = {
341 .name = "WM8711",
342 .playback = {
343 .stream_name = "Playback",
344 .channels_min = 1,
345 .channels_max = 2,
346 .rates = WM8711_RATES,
347 .formats = WM8711_FORMATS,
348 },
349 .ops = &wm8711_ops,
350 };
351 EXPORT_SYMBOL_GPL(wm8711_dai);
352
353 static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
354 {
355 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
356 struct snd_soc_codec *codec = socdev->card->codec;
357
358 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
359 wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
360 return 0;
361 }
362
363 static int wm8711_resume(struct platform_device *pdev)
364 {
365 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
366 struct snd_soc_codec *codec = socdev->card->codec;
367 int i;
368 u8 data[2];
369 u16 *cache = codec->reg_cache;
370
371 /* Sync reg_cache with the hardware */
372 for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
373 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
374 data[1] = cache[i] & 0x00ff;
375 codec->hw_write(codec->control_data, data, 2);
376 }
377 wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
378 wm8711_set_bias_level(codec, codec->suspend_bias_level);
379 return 0;
380 }
381
382 static int wm8711_probe(struct platform_device *pdev)
383 {
384 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
385 struct snd_soc_codec *codec;
386 int ret = 0;
387
388 if (wm8711_codec == NULL) {
389 dev_err(&pdev->dev, "Codec device not registered\n");
390 return -ENODEV;
391 }
392
393 socdev->card->codec = wm8711_codec;
394 codec = wm8711_codec;
395
396 /* register pcms */
397 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
398 if (ret < 0) {
399 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
400 goto pcm_err;
401 }
402
403 snd_soc_add_controls(codec, wm8711_snd_controls,
404 ARRAY_SIZE(wm8711_snd_controls));
405 wm8711_add_widgets(codec);
406
407 return ret;
408
409 pcm_err:
410 return ret;
411 }
412
413 /* power down chip */
414 static int wm8711_remove(struct platform_device *pdev)
415 {
416 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
417
418 snd_soc_free_pcms(socdev);
419 snd_soc_dapm_free(socdev);
420
421 return 0;
422 }
423
424 struct snd_soc_codec_device soc_codec_dev_wm8711 = {
425 .probe = wm8711_probe,
426 .remove = wm8711_remove,
427 .suspend = wm8711_suspend,
428 .resume = wm8711_resume,
429 };
430 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);
431
432 static int wm8711_register(struct wm8711_priv *wm8711,
433 enum snd_soc_control_type control)
434 {
435 int ret;
436 struct snd_soc_codec *codec = &wm8711->codec;
437 u16 reg;
438
439 if (wm8711_codec) {
440 dev_err(codec->dev, "Another WM8711 is registered\n");
441 return -EINVAL;
442 }
443
444 mutex_init(&codec->mutex);
445 INIT_LIST_HEAD(&codec->dapm_widgets);
446 INIT_LIST_HEAD(&codec->dapm_paths);
447
448 codec->private_data = wm8711;
449 codec->name = "WM8711";
450 codec->owner = THIS_MODULE;
451 codec->bias_level = SND_SOC_BIAS_OFF;
452 codec->set_bias_level = wm8711_set_bias_level;
453 codec->dai = &wm8711_dai;
454 codec->num_dai = 1;
455 codec->reg_cache_size = WM8711_CACHEREGNUM;
456 codec->reg_cache = &wm8711->reg_cache;
457
458 memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg));
459
460 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
461 if (ret < 0) {
462 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
463 goto err;
464 }
465
466 ret = wm8711_reset(codec);
467 if (ret < 0) {
468 dev_err(codec->dev, "Failed to issue reset\n");
469 goto err;
470 }
471
472 wm8711_dai.dev = codec->dev;
473
474 wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
475
476 /* Latch the update bits */
477 reg = snd_soc_read(codec, WM8711_LOUT1V);
478 snd_soc_write(codec, WM8711_LOUT1V, reg | 0x0100);
479 reg = snd_soc_read(codec, WM8711_ROUT1V);
480 snd_soc_write(codec, WM8711_ROUT1V, reg | 0x0100);
481
482 wm8711_codec = codec;
483
484 ret = snd_soc_register_codec(codec);
485 if (ret != 0) {
486 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
487 goto err;
488 }
489
490 ret = snd_soc_register_dai(&wm8711_dai);
491 if (ret != 0) {
492 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
493 goto err_codec;
494 }
495
496 return 0;
497
498 err_codec:
499 snd_soc_unregister_codec(codec);
500 err:
501 kfree(wm8711);
502 return ret;
503 }
504
505 static void wm8711_unregister(struct wm8711_priv *wm8711)
506 {
507 wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF);
508 snd_soc_unregister_dai(&wm8711_dai);
509 snd_soc_unregister_codec(&wm8711->codec);
510 kfree(wm8711);
511 wm8711_codec = NULL;
512 }
513
514 #if defined(CONFIG_SPI_MASTER)
515 static int __devinit wm8711_spi_probe(struct spi_device *spi)
516 {
517 struct snd_soc_codec *codec;
518 struct wm8711_priv *wm8711;
519
520 wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
521 if (wm8711 == NULL)
522 return -ENOMEM;
523
524 codec = &wm8711->codec;
525 codec->control_data = spi;
526 codec->dev = &spi->dev;
527
528 dev_set_drvdata(&spi->dev, wm8711);
529
530 return wm8711_register(wm8711, SND_SOC_SPI);
531 }
532
533 static int __devexit wm8711_spi_remove(struct spi_device *spi)
534 {
535 struct wm8711_priv *wm8711 = dev_get_drvdata(&spi->dev);
536
537 wm8711_unregister(wm8711);
538
539 return 0;
540 }
541
542 static struct spi_driver wm8711_spi_driver = {
543 .driver = {
544 .name = "wm8711",
545 .bus = &spi_bus_type,
546 .owner = THIS_MODULE,
547 },
548 .probe = wm8711_spi_probe,
549 .remove = __devexit_p(wm8711_spi_remove),
550 };
551 #endif /* CONFIG_SPI_MASTER */
552
553 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
554 static __devinit int wm8711_i2c_probe(struct i2c_client *i2c,
555 const struct i2c_device_id *id)
556 {
557 struct wm8711_priv *wm8711;
558 struct snd_soc_codec *codec;
559
560 wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
561 if (wm8711 == NULL)
562 return -ENOMEM;
563
564 codec = &wm8711->codec;
565 codec->hw_write = (hw_write_t)i2c_master_send;
566
567 i2c_set_clientdata(i2c, wm8711);
568 codec->control_data = i2c;
569
570 codec->dev = &i2c->dev;
571
572 return wm8711_register(wm8711, SND_SOC_I2C);
573 }
574
575 static __devexit int wm8711_i2c_remove(struct i2c_client *client)
576 {
577 struct wm8711_priv *wm8711 = i2c_get_clientdata(client);
578 wm8711_unregister(wm8711);
579 return 0;
580 }
581
582 static const struct i2c_device_id wm8711_i2c_id[] = {
583 { "wm8711", 0 },
584 { }
585 };
586 MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
587
588 static struct i2c_driver wm8711_i2c_driver = {
589 .driver = {
590 .name = "WM8711 I2C Codec",
591 .owner = THIS_MODULE,
592 },
593 .probe = wm8711_i2c_probe,
594 .remove = __devexit_p(wm8711_i2c_remove),
595 .id_table = wm8711_i2c_id,
596 };
597 #endif
598
599 static int __init wm8711_modinit(void)
600 {
601 int ret;
602 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
603 ret = i2c_add_driver(&wm8711_i2c_driver);
604 if (ret != 0) {
605 printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
606 ret);
607 }
608 #endif
609 #if defined(CONFIG_SPI_MASTER)
610 ret = spi_register_driver(&wm8711_spi_driver);
611 if (ret != 0) {
612 printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
613 ret);
614 }
615 #endif
616 return 0;
617 }
618 module_init(wm8711_modinit);
619
620 static void __exit wm8711_exit(void)
621 {
622 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
623 i2c_del_driver(&wm8711_i2c_driver);
624 #endif
625 #if defined(CONFIG_SPI_MASTER)
626 spi_unregister_driver(&wm8711_spi_driver);
627 #endif
628 }
629 module_exit(wm8711_exit);
630
631 MODULE_DESCRIPTION("ASoC WM8711 driver");
632 MODULE_AUTHOR("Mike Arthur");
633 MODULE_LICENSE("GPL");
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