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Richard Purdie40e0aa62006-10-06 18:36:07 +02001/*
2 * wm8731.c -- WM8731 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Openedhand Ltd.
5 *
6 * Author: Richard Purdie <richard@openedhand.com>
7 *
8 * Based on wm8753.c by Liam Girdwood
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>
Cliff Caid2a40352008-09-01 18:47:03 +010022#include <linux/spi/spi.h>
Richard Purdie40e0aa62006-10-06 18:36:07 +020023#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/initval.h>
29
30#include "wm8731.h"
31
Mark Brown59981022009-02-16 20:49:16 +000032static struct snd_soc_codec *wm8731_codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +020033struct snd_soc_codec_device soc_codec_dev_wm8731;
34
Frank Mandarinob36d61d2007-02-02 17:14:56 +010035/* codec private data */
36struct wm8731_priv {
Mark Brown59981022009-02-16 20:49:16 +000037 struct snd_soc_codec codec;
38 u16 reg_cache[WM8731_CACHEREGNUM];
Frank Mandarinob36d61d2007-02-02 17:14:56 +010039 unsigned int sysclk;
40};
41
Mark Browna8035c82009-02-16 19:35:43 +000042#ifdef CONFIG_SPI_MASTER
43static int wm8731_spi_write(struct spi_device *spi, const char *data, int len);
Mark Browna8035c82009-02-16 19:35:43 +000044#endif
45
Richard Purdie40e0aa62006-10-06 18:36:07 +020046/*
47 * wm8731 register cache
48 * We can't read the WM8731 register space when we are
49 * using 2 wire for device control, so we cache them instead.
50 * There is no point in caching the reset register
51 */
52static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
53 0x0097, 0x0097, 0x0079, 0x0079,
54 0x000a, 0x0008, 0x009f, 0x000a,
55 0x0000, 0x0000
56};
57
Richard Purdie40e0aa62006-10-06 18:36:07 +020058/*
59 * read wm8731 register cache
60 */
61static inline unsigned int wm8731_read_reg_cache(struct snd_soc_codec *codec,
62 unsigned int reg)
63{
64 u16 *cache = codec->reg_cache;
65 if (reg == WM8731_RESET)
66 return 0;
67 if (reg >= WM8731_CACHEREGNUM)
68 return -1;
69 return cache[reg];
70}
71
72/*
73 * write wm8731 register cache
74 */
75static inline void wm8731_write_reg_cache(struct snd_soc_codec *codec,
76 u16 reg, unsigned int value)
77{
78 u16 *cache = codec->reg_cache;
79 if (reg >= WM8731_CACHEREGNUM)
80 return;
81 cache[reg] = value;
82}
83
84/*
85 * write to the WM8731 register space
86 */
87static int wm8731_write(struct snd_soc_codec *codec, unsigned int reg,
88 unsigned int value)
89{
90 u8 data[2];
91
92 /* data is
93 * D15..D9 WM8731 register offset
94 * D8...D0 register data
95 */
96 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
97 data[1] = value & 0x00ff;
98
Mark Brownd454aee2008-04-23 15:16:46 +020099 wm8731_write_reg_cache(codec, reg, value);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200100 if (codec->hw_write(codec->control_data, data, 2) == 2)
101 return 0;
102 else
103 return -EIO;
104}
105
106#define wm8731_reset(c) wm8731_write(c, WM8731_RESET, 0)
107
108static const char *wm8731_input_select[] = {"Line In", "Mic"};
109static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
110
111static const struct soc_enum wm8731_enum[] = {
112 SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select),
113 SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph),
114};
115
116static const struct snd_kcontrol_new wm8731_snd_controls[] = {
117
Liam Girdwoodbd903b62006-11-09 16:35:01 +0100118SOC_DOUBLE_R("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
119 0, 127, 0),
120SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
121 7, 1, 0),
Richard Purdie40e0aa62006-10-06 18:36:07 +0200122
123SOC_DOUBLE_R("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0),
124SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
125
126SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0),
127SOC_SINGLE("Capture Mic Switch", WM8731_APANA, 1, 1, 1),
128
129SOC_SINGLE("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1),
130
131SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
132SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
133
134SOC_ENUM("Playback De-emphasis", wm8731_enum[1]),
135};
136
Richard Purdie40e0aa62006-10-06 18:36:07 +0200137/* Output Mixer */
138static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
139SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
140SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
141SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
142};
143
144/* Input mux */
145static const struct snd_kcontrol_new wm8731_input_mux_controls =
146SOC_DAPM_ENUM("Input Select", wm8731_enum[0]);
147
148static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
149SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
150 &wm8731_output_mixer_controls[0],
151 ARRAY_SIZE(wm8731_output_mixer_controls)),
152SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
153SND_SOC_DAPM_OUTPUT("LOUT"),
154SND_SOC_DAPM_OUTPUT("LHPOUT"),
155SND_SOC_DAPM_OUTPUT("ROUT"),
156SND_SOC_DAPM_OUTPUT("RHPOUT"),
157SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
158SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
159SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
160SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
161SND_SOC_DAPM_INPUT("MICIN"),
162SND_SOC_DAPM_INPUT("RLINEIN"),
163SND_SOC_DAPM_INPUT("LLINEIN"),
164};
165
Mark Browna65f0562008-05-13 14:54:43 +0200166static const struct snd_soc_dapm_route intercon[] = {
Richard Purdie40e0aa62006-10-06 18:36:07 +0200167 /* output mixer */
168 {"Output Mixer", "Line Bypass Switch", "Line Input"},
169 {"Output Mixer", "HiFi Playback Switch", "DAC"},
170 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
171
172 /* outputs */
173 {"RHPOUT", NULL, "Output Mixer"},
174 {"ROUT", NULL, "Output Mixer"},
175 {"LHPOUT", NULL, "Output Mixer"},
176 {"LOUT", NULL, "Output Mixer"},
177
178 /* input mux */
179 {"Input Mux", "Line In", "Line Input"},
180 {"Input Mux", "Mic", "Mic Bias"},
181 {"ADC", NULL, "Input Mux"},
182
183 /* inputs */
184 {"Line Input", NULL, "LLINEIN"},
185 {"Line Input", NULL, "RLINEIN"},
186 {"Mic Bias", NULL, "MICIN"},
Richard Purdie40e0aa62006-10-06 18:36:07 +0200187};
188
189static int wm8731_add_widgets(struct snd_soc_codec *codec)
190{
Mark Browna65f0562008-05-13 14:54:43 +0200191 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
192 ARRAY_SIZE(wm8731_dapm_widgets));
Richard Purdie40e0aa62006-10-06 18:36:07 +0200193
Mark Browna65f0562008-05-13 14:54:43 +0200194 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
Richard Purdie40e0aa62006-10-06 18:36:07 +0200195
196 snd_soc_dapm_new_widgets(codec);
197 return 0;
198}
199
200struct _coeff_div {
201 u32 mclk;
202 u32 rate;
203 u16 fs;
204 u8 sr:4;
205 u8 bosr:1;
206 u8 usb:1;
207};
208
209/* codec mclk clock divider coefficients */
210static const struct _coeff_div coeff_div[] = {
211 /* 48k */
212 {12288000, 48000, 256, 0x0, 0x0, 0x0},
213 {18432000, 48000, 384, 0x0, 0x1, 0x0},
214 {12000000, 48000, 250, 0x0, 0x0, 0x1},
215
216 /* 32k */
217 {12288000, 32000, 384, 0x6, 0x0, 0x0},
218 {18432000, 32000, 576, 0x6, 0x1, 0x0},
Frank Mandarino298a2c72007-01-31 10:02:56 +0100219 {12000000, 32000, 375, 0x6, 0x0, 0x1},
Richard Purdie40e0aa62006-10-06 18:36:07 +0200220
221 /* 8k */
222 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
223 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
224 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
225 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
226 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
227
228 /* 96k */
229 {12288000, 96000, 128, 0x7, 0x0, 0x0},
230 {18432000, 96000, 192, 0x7, 0x1, 0x0},
231 {12000000, 96000, 125, 0x7, 0x0, 0x1},
232
233 /* 44.1k */
234 {11289600, 44100, 256, 0x8, 0x0, 0x0},
235 {16934400, 44100, 384, 0x8, 0x1, 0x0},
236 {12000000, 44100, 272, 0x8, 0x1, 0x1},
237
238 /* 88.2k */
239 {11289600, 88200, 128, 0xf, 0x0, 0x0},
240 {16934400, 88200, 192, 0xf, 0x1, 0x0},
241 {12000000, 88200, 136, 0xf, 0x1, 0x1},
242};
243
244static inline int get_coeff(int mclk, int rate)
245{
246 int i;
247
248 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
249 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
250 return i;
251 }
252 return 0;
253}
254
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100255static int wm8731_hw_params(struct snd_pcm_substream *substream,
Mark Browndee89c42008-11-18 22:11:38 +0000256 struct snd_pcm_hw_params *params,
257 struct snd_soc_dai *dai)
Richard Purdie40e0aa62006-10-06 18:36:07 +0200258{
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100259 struct snd_soc_pcm_runtime *rtd = substream->private_data;
260 struct snd_soc_device *socdev = rtd->socdev;
Mark Brown6627a652009-01-23 22:55:23 +0000261 struct snd_soc_codec *codec = socdev->card->codec;
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100262 struct wm8731_priv *wm8731 = codec->private_data;
263 u16 iface = wm8731_read_reg_cache(codec, WM8731_IFACE) & 0xfff3;
264 int i = get_coeff(wm8731->sysclk, params_rate(params));
265 u16 srate = (coeff_div[i].sr << 2) |
266 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200267
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100268 wm8731_write(codec, WM8731_SRATE, srate);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200269
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100270 /* bit size */
271 switch (params_format(params)) {
272 case SNDRV_PCM_FORMAT_S16_LE:
273 break;
274 case SNDRV_PCM_FORMAT_S20_3LE:
275 iface |= 0x0004;
276 break;
277 case SNDRV_PCM_FORMAT_S24_LE:
278 iface |= 0x0008;
279 break;
280 }
281
282 wm8731_write(codec, WM8731_IFACE, iface);
283 return 0;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200284}
285
Mark Browndee89c42008-11-18 22:11:38 +0000286static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
287 struct snd_soc_dai *dai)
Richard Purdie40e0aa62006-10-06 18:36:07 +0200288{
289 struct snd_soc_pcm_runtime *rtd = substream->private_data;
290 struct snd_soc_device *socdev = rtd->socdev;
Mark Brown6627a652009-01-23 22:55:23 +0000291 struct snd_soc_codec *codec = socdev->card->codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200292
293 /* set active */
294 wm8731_write(codec, WM8731_ACTIVE, 0x0001);
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100295
Richard Purdie40e0aa62006-10-06 18:36:07 +0200296 return 0;
297}
298
Mark Browndee89c42008-11-18 22:11:38 +0000299static void wm8731_shutdown(struct snd_pcm_substream *substream,
300 struct snd_soc_dai *dai)
Richard Purdie40e0aa62006-10-06 18:36:07 +0200301{
302 struct snd_soc_pcm_runtime *rtd = substream->private_data;
303 struct snd_soc_device *socdev = rtd->socdev;
Mark Brown6627a652009-01-23 22:55:23 +0000304 struct snd_soc_codec *codec = socdev->card->codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200305
306 /* deactivate */
307 if (!codec->active) {
308 udelay(50);
309 wm8731_write(codec, WM8731_ACTIVE, 0x0);
310 }
311}
312
Liam Girdwoode550e172008-07-07 16:07:52 +0100313static int wm8731_mute(struct snd_soc_dai *dai, int mute)
Richard Purdie40e0aa62006-10-06 18:36:07 +0200314{
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100315 struct snd_soc_codec *codec = dai->codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200316 u16 mute_reg = wm8731_read_reg_cache(codec, WM8731_APDIGI) & 0xfff7;
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100317
Richard Purdie40e0aa62006-10-06 18:36:07 +0200318 if (mute)
319 wm8731_write(codec, WM8731_APDIGI, mute_reg | 0x8);
320 else
321 wm8731_write(codec, WM8731_APDIGI, mute_reg);
322 return 0;
323}
324
Liam Girdwoode550e172008-07-07 16:07:52 +0100325static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100326 int clk_id, unsigned int freq, int dir)
327{
328 struct snd_soc_codec *codec = codec_dai->codec;
329 struct wm8731_priv *wm8731 = codec->private_data;
330
331 switch (freq) {
332 case 11289600:
333 case 12000000:
334 case 12288000:
335 case 16934400:
336 case 18432000:
337 wm8731->sysclk = freq;
338 return 0;
339 }
340 return -EINVAL;
341}
342
343
Liam Girdwoode550e172008-07-07 16:07:52 +0100344static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100345 unsigned int fmt)
346{
347 struct snd_soc_codec *codec = codec_dai->codec;
348 u16 iface = 0;
349
350 /* set master/slave audio interface */
351 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
352 case SND_SOC_DAIFMT_CBM_CFM:
353 iface |= 0x0040;
354 break;
355 case SND_SOC_DAIFMT_CBS_CFS:
356 break;
357 default:
358 return -EINVAL;
359 }
360
361 /* interface format */
362 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
363 case SND_SOC_DAIFMT_I2S:
364 iface |= 0x0002;
365 break;
366 case SND_SOC_DAIFMT_RIGHT_J:
367 break;
368 case SND_SOC_DAIFMT_LEFT_J:
369 iface |= 0x0001;
370 break;
371 case SND_SOC_DAIFMT_DSP_A:
372 iface |= 0x0003;
373 break;
374 case SND_SOC_DAIFMT_DSP_B:
375 iface |= 0x0013;
376 break;
377 default:
378 return -EINVAL;
379 }
380
381 /* clock inversion */
382 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
383 case SND_SOC_DAIFMT_NB_NF:
384 break;
385 case SND_SOC_DAIFMT_IB_IF:
386 iface |= 0x0090;
387 break;
388 case SND_SOC_DAIFMT_IB_NF:
389 iface |= 0x0080;
390 break;
391 case SND_SOC_DAIFMT_NB_IF:
392 iface |= 0x0010;
393 break;
394 default:
395 return -EINVAL;
396 }
397
398 /* set iface */
399 wm8731_write(codec, WM8731_IFACE, iface);
400 return 0;
401}
402
Mark Brown0be98982008-05-19 12:31:28 +0200403static int wm8731_set_bias_level(struct snd_soc_codec *codec,
404 enum snd_soc_bias_level level)
Richard Purdie40e0aa62006-10-06 18:36:07 +0200405{
Mark Brown22d22ee2009-02-16 19:20:15 +0000406 u16 reg;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200407
Mark Brown0be98982008-05-19 12:31:28 +0200408 switch (level) {
409 case SND_SOC_BIAS_ON:
Richard Purdie40e0aa62006-10-06 18:36:07 +0200410 break;
Mark Brown0be98982008-05-19 12:31:28 +0200411 case SND_SOC_BIAS_PREPARE:
Richard Purdie40e0aa62006-10-06 18:36:07 +0200412 break;
Mark Brown0be98982008-05-19 12:31:28 +0200413 case SND_SOC_BIAS_STANDBY:
Mark Brown22d22ee2009-02-16 19:20:15 +0000414 /* Clear PWROFF, gate CLKOUT, everything else as-is */
415 reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200416 wm8731_write(codec, WM8731_PWR, reg | 0x0040);
417 break;
Mark Brown0be98982008-05-19 12:31:28 +0200418 case SND_SOC_BIAS_OFF:
Richard Purdie40e0aa62006-10-06 18:36:07 +0200419 wm8731_write(codec, WM8731_ACTIVE, 0x0);
420 wm8731_write(codec, WM8731_PWR, 0xffff);
421 break;
422 }
Mark Brown0be98982008-05-19 12:31:28 +0200423 codec->bias_level = level;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200424 return 0;
425}
426
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100427#define WM8731_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
428 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
429 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
430 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
431 SNDRV_PCM_RATE_96000)
432
433#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
434 SNDRV_PCM_FMTBIT_S24_LE)
435
Eric Miao6335d052009-03-03 09:41:00 +0800436static struct snd_soc_dai_ops wm8731_dai_ops = {
437 .prepare = wm8731_pcm_prepare,
438 .hw_params = wm8731_hw_params,
439 .shutdown = wm8731_shutdown,
440 .digital_mute = wm8731_mute,
441 .set_sysclk = wm8731_set_dai_sysclk,
442 .set_fmt = wm8731_set_dai_fmt,
443};
444
Liam Girdwoode550e172008-07-07 16:07:52 +0100445struct snd_soc_dai wm8731_dai = {
Richard Purdie40e0aa62006-10-06 18:36:07 +0200446 .name = "WM8731",
447 .playback = {
448 .stream_name = "Playback",
449 .channels_min = 1,
450 .channels_max = 2,
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100451 .rates = WM8731_RATES,
452 .formats = WM8731_FORMATS,},
Richard Purdie40e0aa62006-10-06 18:36:07 +0200453 .capture = {
454 .stream_name = "Capture",
455 .channels_min = 1,
456 .channels_max = 2,
Frank Mandarinob36d61d2007-02-02 17:14:56 +0100457 .rates = WM8731_RATES,
458 .formats = WM8731_FORMATS,},
Eric Miao6335d052009-03-03 09:41:00 +0800459 .ops = &wm8731_dai_ops,
Richard Purdie40e0aa62006-10-06 18:36:07 +0200460};
461EXPORT_SYMBOL_GPL(wm8731_dai);
462
463static int wm8731_suspend(struct platform_device *pdev, pm_message_t state)
464{
465 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
Mark Brown6627a652009-01-23 22:55:23 +0000466 struct snd_soc_codec *codec = socdev->card->codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200467
468 wm8731_write(codec, WM8731_ACTIVE, 0x0);
Mark Brown0be98982008-05-19 12:31:28 +0200469 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200470 return 0;
471}
472
473static int wm8731_resume(struct platform_device *pdev)
474{
475 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
Mark Brown6627a652009-01-23 22:55:23 +0000476 struct snd_soc_codec *codec = socdev->card->codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200477 int i;
478 u8 data[2];
479 u16 *cache = codec->reg_cache;
480
481 /* Sync reg_cache with the hardware */
482 for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) {
483 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
484 data[1] = cache[i] & 0x00ff;
485 codec->hw_write(codec->control_data, data, 2);
486 }
Mark Brown0be98982008-05-19 12:31:28 +0200487 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
488 wm8731_set_bias_level(codec, codec->suspend_bias_level);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200489 return 0;
490}
491
Mark Brown59981022009-02-16 20:49:16 +0000492static int wm8731_probe(struct platform_device *pdev)
Richard Purdie40e0aa62006-10-06 18:36:07 +0200493{
Mark Brown59981022009-02-16 20:49:16 +0000494 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
495 struct snd_soc_codec *codec;
496 int ret = 0;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200497
Mark Brown59981022009-02-16 20:49:16 +0000498 if (wm8731_codec == NULL) {
499 dev_err(&pdev->dev, "Codec device not registered\n");
500 return -ENODEV;
501 }
Richard Purdie40e0aa62006-10-06 18:36:07 +0200502
Mark Brown59981022009-02-16 20:49:16 +0000503 socdev->card->codec = wm8731_codec;
504 codec = wm8731_codec;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200505
506 /* register pcms */
507 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
508 if (ret < 0) {
Mark Brown59981022009-02-16 20:49:16 +0000509 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
Liam Girdwoode35115a2007-01-31 10:02:23 +0100510 goto pcm_err;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200511 }
512
Ian Molton3e8e1952009-01-09 00:23:21 +0000513 snd_soc_add_controls(codec, wm8731_snd_controls,
Mark Brown59981022009-02-16 20:49:16 +0000514 ARRAY_SIZE(wm8731_snd_controls));
Richard Purdie40e0aa62006-10-06 18:36:07 +0200515 wm8731_add_widgets(codec);
Mark Brown968a6022008-11-28 11:49:07 +0000516 ret = snd_soc_init_card(socdev);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200517 if (ret < 0) {
Mark Brown59981022009-02-16 20:49:16 +0000518 dev_err(codec->dev, "failed to register card: %d\n", ret);
Liam Girdwoode35115a2007-01-31 10:02:23 +0100519 goto card_err;
Richard Purdie40e0aa62006-10-06 18:36:07 +0200520 }
521
522 return ret;
Liam Girdwoode35115a2007-01-31 10:02:23 +0100523
524card_err:
525 snd_soc_free_pcms(socdev);
526 snd_soc_dapm_free(socdev);
527pcm_err:
Richard Purdie40e0aa62006-10-06 18:36:07 +0200528 return ret;
529}
530
531/* power down chip */
532static int wm8731_remove(struct platform_device *pdev)
533{
534 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200535
536 snd_soc_free_pcms(socdev);
537 snd_soc_dapm_free(socdev);
Richard Purdie40e0aa62006-10-06 18:36:07 +0200538
539 return 0;
540}
541
542struct snd_soc_codec_device soc_codec_dev_wm8731 = {
543 .probe = wm8731_probe,
544 .remove = wm8731_remove,
545 .suspend = wm8731_suspend,
546 .resume = wm8731_resume,
547};
Richard Purdie40e0aa62006-10-06 18:36:07 +0200548EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731);
549
Mark Brown59981022009-02-16 20:49:16 +0000550static int wm8731_register(struct wm8731_priv *wm8731)
Mark Browna8035c82009-02-16 19:35:43 +0000551{
Mark Browna8035c82009-02-16 19:35:43 +0000552 int ret;
Mark Brown59981022009-02-16 20:49:16 +0000553 struct snd_soc_codec *codec = &wm8731->codec;
554 u16 reg;
Mark Browna8035c82009-02-16 19:35:43 +0000555
Mark Brown59981022009-02-16 20:49:16 +0000556 if (wm8731_codec) {
557 dev_err(codec->dev, "Another WM8731 is registered\n");
558 return -EINVAL;
559 }
Mark Browna8035c82009-02-16 19:35:43 +0000560
Mark Brown59981022009-02-16 20:49:16 +0000561 mutex_init(&codec->mutex);
562 INIT_LIST_HEAD(&codec->dapm_widgets);
563 INIT_LIST_HEAD(&codec->dapm_paths);
Mark Browna8035c82009-02-16 19:35:43 +0000564
Mark Brown59981022009-02-16 20:49:16 +0000565 codec->private_data = wm8731;
566 codec->name = "WM8731";
567 codec->owner = THIS_MODULE;
568 codec->read = wm8731_read_reg_cache;
569 codec->write = wm8731_write;
570 codec->bias_level = SND_SOC_BIAS_OFF;
571 codec->set_bias_level = wm8731_set_bias_level;
572 codec->dai = &wm8731_dai;
573 codec->num_dai = 1;
574 codec->reg_cache_size = WM8731_CACHEREGNUM;
575 codec->reg_cache = &wm8731->reg_cache;
Mark Browna8035c82009-02-16 19:35:43 +0000576
Mark Brown59981022009-02-16 20:49:16 +0000577 memcpy(codec->reg_cache, wm8731_reg, sizeof(wm8731_reg));
578
Mark Brown519cf2d2009-02-18 21:06:01 +0000579 ret = wm8731_reset(codec);
580 if (ret < 0) {
581 dev_err(codec->dev, "Failed to issue reset\n");
582 return ret;
583 }
584
Mark Brown59981022009-02-16 20:49:16 +0000585 wm8731_dai.dev = codec->dev;
586
Mark Brown59981022009-02-16 20:49:16 +0000587 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
588
589 /* Latch the update bits */
590 reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V);
591 wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100);
592 reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V);
593 wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100);
594 reg = wm8731_read_reg_cache(codec, WM8731_LINVOL);
595 wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100);
596 reg = wm8731_read_reg_cache(codec, WM8731_RINVOL);
597 wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100);
598
Mark Brownce3bdaa2009-02-19 14:29:49 +0000599 /* Disable bypass path by default */
600 reg = wm8731_read_reg_cache(codec, WM8731_APANA);
601 wm8731_write(codec, WM8731_APANA, reg & ~0x4);
602
Mark Brown59981022009-02-16 20:49:16 +0000603 wm8731_codec = codec;
604
605 ret = snd_soc_register_codec(codec);
606 if (ret != 0) {
607 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
608 return ret;
609 }
610
611 ret = snd_soc_register_dai(&wm8731_dai);
612 if (ret != 0) {
613 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
614 snd_soc_unregister_codec(codec);
615 return ret;
616 }
617
Mark Browna8035c82009-02-16 19:35:43 +0000618 return 0;
619}
620
Mark Brown59981022009-02-16 20:49:16 +0000621static void wm8731_unregister(struct wm8731_priv *wm8731)
622{
623 wm8731_set_bias_level(&wm8731->codec, SND_SOC_BIAS_OFF);
624 snd_soc_unregister_dai(&wm8731_dai);
625 snd_soc_unregister_codec(&wm8731->codec);
626 kfree(wm8731);
627 wm8731_codec = NULL;
628}
Mark Browna8035c82009-02-16 19:35:43 +0000629
Mark Brown59981022009-02-16 20:49:16 +0000630#if defined(CONFIG_SPI_MASTER)
Mark Browna8035c82009-02-16 19:35:43 +0000631static int wm8731_spi_write(struct spi_device *spi, const char *data, int len)
632{
633 struct spi_transfer t;
634 struct spi_message m;
635 u8 msg[2];
636
637 if (len <= 0)
638 return 0;
639
640 msg[0] = data[0];
641 msg[1] = data[1];
642
643 spi_message_init(&m);
644 memset(&t, 0, (sizeof t));
645
646 t.tx_buf = &msg[0];
647 t.len = len;
648
649 spi_message_add_tail(&t, &m);
650 spi_sync(spi, &m);
651
652 return len;
653}
Mark Brown59981022009-02-16 20:49:16 +0000654
655static int __devinit wm8731_spi_probe(struct spi_device *spi)
656{
657 struct snd_soc_codec *codec;
658 struct wm8731_priv *wm8731;
659
660 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
661 if (wm8731 == NULL)
662 return -ENOMEM;
663
664 codec = &wm8731->codec;
665 codec->control_data = spi;
666 codec->hw_write = (hw_write_t)wm8731_spi_write;
667 codec->dev = &spi->dev;
668
Mark Brown93b760b2009-02-18 12:44:40 +0000669 spi->dev.driver_data = wm8731;
670
Mark Brown59981022009-02-16 20:49:16 +0000671 return wm8731_register(wm8731);
672}
673
674static int __devexit wm8731_spi_remove(struct spi_device *spi)
675{
Mark Brown93b760b2009-02-18 12:44:40 +0000676 struct wm8731_priv *wm8731 = spi->dev.driver_data;
677
678 wm8731_unregister(wm8731);
679
Mark Brown59981022009-02-16 20:49:16 +0000680 return 0;
681}
682
683static struct spi_driver wm8731_spi_driver = {
684 .driver = {
685 .name = "wm8731",
686 .bus = &spi_bus_type,
687 .owner = THIS_MODULE,
688 },
689 .probe = wm8731_spi_probe,
690 .remove = __devexit_p(wm8731_spi_remove),
691};
Mark Browna8035c82009-02-16 19:35:43 +0000692#endif /* CONFIG_SPI_MASTER */
693
694#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
Mark Brownc6f29812009-02-18 21:25:40 +0000695static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
696 const struct i2c_device_id *id)
Mark Browna8035c82009-02-16 19:35:43 +0000697{
Mark Brown59981022009-02-16 20:49:16 +0000698 struct wm8731_priv *wm8731;
699 struct snd_soc_codec *codec;
Mark Browna8035c82009-02-16 19:35:43 +0000700
Mark Brown59981022009-02-16 20:49:16 +0000701 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
702 if (wm8731 == NULL)
703 return -ENOMEM;
704
705 codec = &wm8731->codec;
706 codec->hw_write = (hw_write_t)i2c_master_send;
707
708 i2c_set_clientdata(i2c, wm8731);
Mark Browna8035c82009-02-16 19:35:43 +0000709 codec->control_data = i2c;
710
Mark Brown59981022009-02-16 20:49:16 +0000711 codec->dev = &i2c->dev;
Mark Browna8035c82009-02-16 19:35:43 +0000712
Mark Brown59981022009-02-16 20:49:16 +0000713 return wm8731_register(wm8731);
Mark Browna8035c82009-02-16 19:35:43 +0000714}
715
Mark Brownc6f29812009-02-18 21:25:40 +0000716static __devexit int wm8731_i2c_remove(struct i2c_client *client)
Mark Browna8035c82009-02-16 19:35:43 +0000717{
Mark Brown59981022009-02-16 20:49:16 +0000718 struct wm8731_priv *wm8731 = i2c_get_clientdata(client);
719 wm8731_unregister(wm8731);
Mark Browna8035c82009-02-16 19:35:43 +0000720 return 0;
721}
722
723static const struct i2c_device_id wm8731_i2c_id[] = {
724 { "wm8731", 0 },
725 { }
726};
727MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
728
729static struct i2c_driver wm8731_i2c_driver = {
730 .driver = {
731 .name = "WM8731 I2C Codec",
732 .owner = THIS_MODULE,
733 },
734 .probe = wm8731_i2c_probe,
Mark Brownc6f29812009-02-18 21:25:40 +0000735 .remove = __devexit_p(wm8731_i2c_remove),
Mark Browna8035c82009-02-16 19:35:43 +0000736 .id_table = wm8731_i2c_id,
737};
738#endif
739
Takashi Iwaic9b3a402008-12-10 07:47:22 +0100740static int __init wm8731_modinit(void)
Mark Brown64089b82008-12-08 19:17:58 +0000741{
Mark Brown59981022009-02-16 20:49:16 +0000742 int ret;
743#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
744 ret = i2c_add_driver(&wm8731_i2c_driver);
745 if (ret != 0) {
746 printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
747 ret);
748 }
749#endif
750#if defined(CONFIG_SPI_MASTER)
751 ret = spi_register_driver(&wm8731_spi_driver);
752 if (ret != 0) {
753 printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
754 ret);
755 }
756#endif
757 return 0;
Mark Brown64089b82008-12-08 19:17:58 +0000758}
759module_init(wm8731_modinit);
760
761static void __exit wm8731_exit(void)
762{
Mark Brown59981022009-02-16 20:49:16 +0000763#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
764 i2c_del_driver(&wm8731_i2c_driver);
765#endif
766#if defined(CONFIG_SPI_MASTER)
767 spi_unregister_driver(&wm8731_spi_driver);
768#endif
Mark Brown64089b82008-12-08 19:17:58 +0000769}
770module_exit(wm8731_exit);
771
Richard Purdie40e0aa62006-10-06 18:36:07 +0200772MODULE_DESCRIPTION("ASoC WM8731 driver");
773MODULE_AUTHOR("Richard Purdie");
774MODULE_LICENSE("GPL");