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ALSA: ASoC - Fix wrong section types
[linux-2.6-block.git] / sound / soc / codecs / wm8731.c
CommitLineData
40e0aa64
RP		 1/*
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>
d2a40355 22#include <linux/spi/spi.h>
40e0aa64
RP		 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/initval.h>
29
30#include "wm8731.h"
31
b36d61d4 32#define WM8731_VERSION "0.13"
40e0aa64 33
40e0aa64
RP		 34struct snd_soc_codec_device soc_codec_dev_wm8731;
35
b36d61d4
FM		 36/* codec private data */
37struct wm8731_priv {
38 unsigned int sysclk;
39};
40
40e0aa64
RP		 41/*
42 * wm8731 register cache
43 * We can't read the WM8731 register space when we are
44 * using 2 wire for device control, so we cache them instead.
45 * There is no point in caching the reset register
46 */
47static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
48 0x0097, 0x0097, 0x0079, 0x0079,
49 0x000a, 0x0008, 0x009f, 0x000a,
50 0x0000, 0x0000
51};
52
40e0aa64
RP		 53/*
54 * read wm8731 register cache
55 */
56static inline unsigned int wm8731_read_reg_cache(struct snd_soc_codec *codec,
57 unsigned int reg)
58{
59 u16 *cache = codec->reg_cache;
60 if (reg == WM8731_RESET)
61 return 0;
62 if (reg >= WM8731_CACHEREGNUM)
63 return -1;
64 return cache[reg];
65}
66
67/*
68 * write wm8731 register cache
69 */
70static inline void wm8731_write_reg_cache(struct snd_soc_codec *codec,
71 u16 reg, unsigned int value)
72{
73 u16 *cache = codec->reg_cache;
74 if (reg >= WM8731_CACHEREGNUM)
75 return;
76 cache[reg] = value;
77}
78
79/*
80 * write to the WM8731 register space
81 */
82static int wm8731_write(struct snd_soc_codec *codec, unsigned int reg,
83 unsigned int value)
84{
85 u8 data[2];
86
87 /* data is
88 * D15..D9 WM8731 register offset
89 * D8...D0 register data
90 */
91 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
92 data[1] = value & 0x00ff;
93
d454aee9 94 wm8731_write_reg_cache(codec, reg, value);
40e0aa64
RP		 95 if (codec->hw_write(codec->control_data, data, 2) == 2)
96 return 0;
97 else
98 return -EIO;
99}
100
101#define wm8731_reset(c) wm8731_write(c, WM8731_RESET, 0)
102
103static const char *wm8731_input_select[] = {"Line In", "Mic"};
104static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
105
106static const struct soc_enum wm8731_enum[] = {
107 SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select),
108 SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph),
109};
110
111static const struct snd_kcontrol_new wm8731_snd_controls[] = {
112
bd903b6e
LG		 113SOC_DOUBLE_R("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
114 0, 127, 0),
115SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
116 7, 1, 0),
40e0aa64
RP		 117
118SOC_DOUBLE_R("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0),
119SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
120
121SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0),
122SOC_SINGLE("Capture Mic Switch", WM8731_APANA, 1, 1, 1),
123
124SOC_SINGLE("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1),
125
126SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
127SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
128
129SOC_ENUM("Playback De-emphasis", wm8731_enum[1]),
130};
131
132/* add non dapm controls */
133static int wm8731_add_controls(struct snd_soc_codec *codec)
134{
135 int err, i;
136
137 for (i = 0; i < ARRAY_SIZE(wm8731_snd_controls); i++) {
d454aee9
MB		 138 err = snd_ctl_add(codec->card,
139 snd_soc_cnew(&wm8731_snd_controls[i],
140 codec, NULL));
141 if (err < 0)
40e0aa64
RP		 142 return err;
143 }
144
145 return 0;
146}
147
148/* Output Mixer */
149static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
150SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
151SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
152SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
153};
154
155/* Input mux */
156static const struct snd_kcontrol_new wm8731_input_mux_controls =
157SOC_DAPM_ENUM("Input Select", wm8731_enum[0]);
158
159static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
160SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
161 &wm8731_output_mixer_controls[0],
162 ARRAY_SIZE(wm8731_output_mixer_controls)),
163SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
164SND_SOC_DAPM_OUTPUT("LOUT"),
165SND_SOC_DAPM_OUTPUT("LHPOUT"),
166SND_SOC_DAPM_OUTPUT("ROUT"),
167SND_SOC_DAPM_OUTPUT("RHPOUT"),
168SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
169SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
170SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
171SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
172SND_SOC_DAPM_INPUT("MICIN"),
173SND_SOC_DAPM_INPUT("RLINEIN"),
174SND_SOC_DAPM_INPUT("LLINEIN"),
175};
176
a65f0568 177static const struct snd_soc_dapm_route intercon[] = {
40e0aa64
RP		 178 /* output mixer */
179 {"Output Mixer", "Line Bypass Switch", "Line Input"},
180 {"Output Mixer", "HiFi Playback Switch", "DAC"},
181 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
182
183 /* outputs */
184 {"RHPOUT", NULL, "Output Mixer"},
185 {"ROUT", NULL, "Output Mixer"},
186 {"LHPOUT", NULL, "Output Mixer"},
187 {"LOUT", NULL, "Output Mixer"},
188
189 /* input mux */
190 {"Input Mux", "Line In", "Line Input"},
191 {"Input Mux", "Mic", "Mic Bias"},
192 {"ADC", NULL, "Input Mux"},
193
194 /* inputs */
195 {"Line Input", NULL, "LLINEIN"},
196 {"Line Input", NULL, "RLINEIN"},
197 {"Mic Bias", NULL, "MICIN"},
40e0aa64
RP		 198};
199
200static int wm8731_add_widgets(struct snd_soc_codec *codec)
201{
a65f0568
MB		 202 snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
203 ARRAY_SIZE(wm8731_dapm_widgets));
40e0aa64 204
a65f0568 205 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
40e0aa64
RP		 206
207 snd_soc_dapm_new_widgets(codec);
208 return 0;
209}
210
211struct _coeff_div {
212 u32 mclk;
213 u32 rate;
214 u16 fs;
215 u8 sr:4;
216 u8 bosr:1;
217 u8 usb:1;
218};
219
220/* codec mclk clock divider coefficients */
221static const struct _coeff_div coeff_div[] = {
222 /* 48k */
223 {12288000, 48000, 256, 0x0, 0x0, 0x0},
224 {18432000, 48000, 384, 0x0, 0x1, 0x0},
225 {12000000, 48000, 250, 0x0, 0x0, 0x1},
226
227 /* 32k */
228 {12288000, 32000, 384, 0x6, 0x0, 0x0},
229 {18432000, 32000, 576, 0x6, 0x1, 0x0},
298a2c75 230 {12000000, 32000, 375, 0x6, 0x0, 0x1},
40e0aa64
RP		 231
232 /* 8k */
233 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
234 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
235 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
236 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
237 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
238
239 /* 96k */
240 {12288000, 96000, 128, 0x7, 0x0, 0x0},
241 {18432000, 96000, 192, 0x7, 0x1, 0x0},
242 {12000000, 96000, 125, 0x7, 0x0, 0x1},
243
244 /* 44.1k */
245 {11289600, 44100, 256, 0x8, 0x0, 0x0},
246 {16934400, 44100, 384, 0x8, 0x1, 0x0},
247 {12000000, 44100, 272, 0x8, 0x1, 0x1},
248
249 /* 88.2k */
250 {11289600, 88200, 128, 0xf, 0x0, 0x0},
251 {16934400, 88200, 192, 0xf, 0x1, 0x0},
252 {12000000, 88200, 136, 0xf, 0x1, 0x1},
253};
254
255static inline int get_coeff(int mclk, int rate)
256{
257 int i;
258
259 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
260 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
261 return i;
262 }
263 return 0;
264}
265
b36d61d4 266static int wm8731_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 267 struct snd_pcm_hw_params *params,
268 struct snd_soc_dai *dai)
40e0aa64 269{
b36d61d4
FM		 270 struct snd_soc_pcm_runtime *rtd = substream->private_data;
271 struct snd_soc_device *socdev = rtd->socdev;
272 struct snd_soc_codec *codec = socdev->codec;
273 struct wm8731_priv *wm8731 = codec->private_data;
274 u16 iface = wm8731_read_reg_cache(codec, WM8731_IFACE) & 0xfff3;
275 int i = get_coeff(wm8731->sysclk, params_rate(params));
276 u16 srate = (coeff_div[i].sr << 2) |
277 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
40e0aa64 278
b36d61d4
FM		 279 wm8731_write(codec, WM8731_SRATE, srate);
280
281 /* bit size */
282 switch (params_format(params)) {
283 case SNDRV_PCM_FORMAT_S16_LE:
284 break;
285 case SNDRV_PCM_FORMAT_S20_3LE:
286 iface |= 0x0004;
287 break;
288 case SNDRV_PCM_FORMAT_S24_LE:
289 iface |= 0x0008;
290 break;
291 }
40e0aa64 292
b36d61d4
FM		 293 wm8731_write(codec, WM8731_IFACE, iface);
294 return 0;
40e0aa64
RP		 295}
296
dee89c4d
MB		 297static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
298 struct snd_soc_dai *dai)
40e0aa64
RP		 299{
300 struct snd_soc_pcm_runtime *rtd = substream->private_data;
301 struct snd_soc_device *socdev = rtd->socdev;
302 struct snd_soc_codec *codec = socdev->codec;
b36d61d4
FM		 303
304 /* set active */
305 wm8731_write(codec, WM8731_ACTIVE, 0x0001);
306
307 return 0;
308}
309
dee89c4d
MB		 310static void wm8731_shutdown(struct snd_pcm_substream *substream,
311 struct snd_soc_dai *dai)
b36d61d4
FM		 312{
313 struct snd_soc_pcm_runtime *rtd = substream->private_data;
314 struct snd_soc_device *socdev = rtd->socdev;
315 struct snd_soc_codec *codec = socdev->codec;
316
317 /* deactivate */
318 if (!codec->active) {
319 udelay(50);
320 wm8731_write(codec, WM8731_ACTIVE, 0x0);
321 }
322}
323
e550e17f 324static int wm8731_mute(struct snd_soc_dai *dai, int mute)
b36d61d4
FM		 325{
326 struct snd_soc_codec *codec = dai->codec;
327 u16 mute_reg = wm8731_read_reg_cache(codec, WM8731_APDIGI) & 0xfff7;
328
329 if (mute)
330 wm8731_write(codec, WM8731_APDIGI, mute_reg | 0x8);
331 else
332 wm8731_write(codec, WM8731_APDIGI, mute_reg);
333 return 0;
334}
335
e550e17f 336static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
b36d61d4
FM		 337 int clk_id, unsigned int freq, int dir)
338{
339 struct snd_soc_codec *codec = codec_dai->codec;
340 struct wm8731_priv *wm8731 = codec->private_data;
341
342 switch (freq) {
343 case 11289600:
344 case 12000000:
345 case 12288000:
346 case 16934400:
347 case 18432000:
348 wm8731->sysclk = freq;
349 return 0;
350 }
351 return -EINVAL;
352}
353
354
e550e17f 355static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
b36d61d4
FM		 356 unsigned int fmt)
357{
358 struct snd_soc_codec *codec = codec_dai->codec;
359 u16 iface = 0;
40e0aa64
RP		 360
361 /* set master/slave audio interface */
b36d61d4 362 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
40e0aa64
RP		 363 case SND_SOC_DAIFMT_CBM_CFM:
364 iface |= 0x0040;
365 break;
366 case SND_SOC_DAIFMT_CBS_CFS:
367 break;
b36d61d4
FM		 368 default:
369 return -EINVAL;
40e0aa64 370 }
40e0aa64
RP		 371
372 /* interface format */
b36d61d4 373 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
40e0aa64
RP		 374 case SND_SOC_DAIFMT_I2S:
375 iface |= 0x0002;
376 break;
377 case SND_SOC_DAIFMT_RIGHT_J:
378 break;
379 case SND_SOC_DAIFMT_LEFT_J:
380 iface |= 0x0001;
381 break;
382 case SND_SOC_DAIFMT_DSP_A:
383 iface |= 0x0003;
384 break;
385 case SND_SOC_DAIFMT_DSP_B:
386 iface |= 0x0013;
387 break;
b36d61d4
FM		 388 default:
389 return -EINVAL;
40e0aa64
RP		 390 }
391
392 /* clock inversion */
b36d61d4 393 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
40e0aa64
RP		 394 case SND_SOC_DAIFMT_NB_NF:
395 break;
396 case SND_SOC_DAIFMT_IB_IF:
397 iface |= 0x0090;
398 break;
399 case SND_SOC_DAIFMT_IB_NF:
400 iface |= 0x0080;
401 break;
402 case SND_SOC_DAIFMT_NB_IF:
403 iface |= 0x0010;
404 break;
b36d61d4
FM		 405 default:
406 return -EINVAL;
40e0aa64
RP		 407 }
408
409 /* set iface */
410 wm8731_write(codec, WM8731_IFACE, iface);
40e0aa64
RP		 411 return 0;
412}
413
0be9898a
MB		 414static int wm8731_set_bias_level(struct snd_soc_codec *codec,
415 enum snd_soc_bias_level level)
40e0aa64
RP		 416{
417 u16 reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f;
418
0be9898a
MB		 419 switch (level) {
420 case SND_SOC_BIAS_ON:
40e0aa64
RP		 421 /* vref/mid, osc on, dac unmute */
422 wm8731_write(codec, WM8731_PWR, reg);
423 break;
0be9898a 424 case SND_SOC_BIAS_PREPARE:
40e0aa64 425 break;
0be9898a 426 case SND_SOC_BIAS_STANDBY:
40e0aa64
RP		 427 /* everything off except vref/vmid, */
428 wm8731_write(codec, WM8731_PWR, reg | 0x0040);
429 break;
0be9898a 430 case SND_SOC_BIAS_OFF:
40e0aa64
RP		 431 /* everything off, dac mute, inactive */
432 wm8731_write(codec, WM8731_ACTIVE, 0x0);
433 wm8731_write(codec, WM8731_PWR, 0xffff);
434 break;
435 }
0be9898a 436 codec->bias_level = level;
40e0aa64
RP		 437 return 0;
438}
439
b36d61d4
FM		 440#define WM8731_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
441 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
442 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
443 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
444 SNDRV_PCM_RATE_96000)
445
446#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
447 SNDRV_PCM_FMTBIT_S24_LE)
448
e550e17f 449struct snd_soc_dai wm8731_dai = {
40e0aa64
RP		 450 .name = "WM8731",
451 .playback = {
452 .stream_name = "Playback",
453 .channels_min = 1,
454 .channels_max = 2,
b36d61d4
FM		 455 .rates = WM8731_RATES,
456 .formats = WM8731_FORMATS,},
40e0aa64
RP		 457 .capture = {
458 .stream_name = "Capture",
459 .channels_min = 1,
460 .channels_max = 2,
b36d61d4
FM		 461 .rates = WM8731_RATES,
462 .formats = WM8731_FORMATS,},
40e0aa64
RP		 463 .ops = {
464 .prepare = wm8731_pcm_prepare,
b36d61d4 465 .hw_params = wm8731_hw_params,
40e0aa64 466 .shutdown = wm8731_shutdown,
b36d61d4
FM		 467 .digital_mute = wm8731_mute,
468 .set_sysclk = wm8731_set_dai_sysclk,
469 .set_fmt = wm8731_set_dai_fmt,
470 }
40e0aa64
RP		 471};
472EXPORT_SYMBOL_GPL(wm8731_dai);
473
474static int wm8731_suspend(struct platform_device *pdev, pm_message_t state)
475{
476 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
477 struct snd_soc_codec *codec = socdev->codec;
478
479 wm8731_write(codec, WM8731_ACTIVE, 0x0);
0be9898a 480 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
40e0aa64
RP		 481 return 0;
482}
483
484static int wm8731_resume(struct platform_device *pdev)
485{
486 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
487 struct snd_soc_codec *codec = socdev->codec;
488 int i;
489 u8 data[2];
490 u16 *cache = codec->reg_cache;
491
492 /* Sync reg_cache with the hardware */
493 for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) {
494 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
495 data[1] = cache[i] & 0x00ff;
496 codec->hw_write(codec->control_data, data, 2);
497 }
0be9898a
MB		 498 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
499 wm8731_set_bias_level(codec, codec->suspend_bias_level);
40e0aa64
RP		 500 return 0;
501}
502
503/*
504 * initialise the WM8731 driver
505 * register the mixer and dsp interfaces with the kernel
506 */
507static int wm8731_init(struct snd_soc_device *socdev)
508{
509 struct snd_soc_codec *codec = socdev->codec;
510 int reg, ret = 0;
511
512 codec->name = "WM8731";
513 codec->owner = THIS_MODULE;
514 codec->read = wm8731_read_reg_cache;
515 codec->write = wm8731_write;
0be9898a 516 codec->set_bias_level = wm8731_set_bias_level;
40e0aa64
RP		 517 codec->dai = &wm8731_dai;
518 codec->num_dai = 1;
d751b233 519 codec->reg_cache_size = ARRAY_SIZE(wm8731_reg);
88cb4290 520 codec->reg_cache = kmemdup(wm8731_reg, sizeof(wm8731_reg), GFP_KERNEL);
40e0aa64
RP		 521 if (codec->reg_cache == NULL)
522 return -ENOMEM;
40e0aa64
RP		 523
524 wm8731_reset(codec);
525
526 /* register pcms */
527 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
528 if (ret < 0) {
e35115a5
LG		 529 printk(KERN_ERR "wm8731: failed to create pcms\n");
530 goto pcm_err;
40e0aa64
RP		 531 }
532
533 /* power on device */
0be9898a 534 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
40e0aa64
RP		 535
536 /* set the update bits */
537 reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V);
389619f1 538 wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100);
40e0aa64 539 reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V);
389619f1 540 wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100);
40e0aa64 541 reg = wm8731_read_reg_cache(codec, WM8731_LINVOL);
389619f1 542 wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100);
40e0aa64 543 reg = wm8731_read_reg_cache(codec, WM8731_RINVOL);
389619f1 544 wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100);
40e0aa64
RP		 545
546 wm8731_add_controls(codec);
547 wm8731_add_widgets(codec);
968a6025 548 ret = snd_soc_init_card(socdev);
40e0aa64 549 if (ret < 0) {
e35115a5
LG		 550 printk(KERN_ERR "wm8731: failed to register card\n");
551 goto card_err;
40e0aa64
RP		 552 }
553
554 return ret;
e35115a5
LG		 555
556card_err:
557 snd_soc_free_pcms(socdev);
558 snd_soc_dapm_free(socdev);
559pcm_err:
560 kfree(codec->reg_cache);
561 return ret;
40e0aa64
RP		 562}
563
564static struct snd_soc_device *wm8731_socdev;
565
d454aee9 566#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
40e0aa64
RP		 567
568/*
569 * WM8731 2 wire address is determined by GPIO5
570 * state during powerup.
571 * low = 0x1a
572 * high = 0x1b
573 */
40e0aa64 574
81297c8a
JD		 575static int wm8731_i2c_probe(struct i2c_client *i2c,
576 const struct i2c_device_id *id)
40e0aa64
RP		 577{
578 struct snd_soc_device *socdev = wm8731_socdev;
40e0aa64 579 struct snd_soc_codec *codec = socdev->codec;
40e0aa64
RP		 580 int ret;
581
40e0aa64
RP		 582 i2c_set_clientdata(i2c, codec);
583 codec->control_data = i2c;
584
40e0aa64 585 ret = wm8731_init(socdev);
81297c8a 586 if (ret < 0)
a5c95e90 587 pr_err("failed to initialise WM8731\n");
40e0aa64 588
40e0aa64
RP		 589 return ret;
590}
591
81297c8a 592static int wm8731_i2c_remove(struct i2c_client *client)
40e0aa64 593{
d454aee9 594 struct snd_soc_codec *codec = i2c_get_clientdata(client);
40e0aa64 595 kfree(codec->reg_cache);
40e0aa64
RP		 596 return 0;
597}
598
81297c8a
JD		 599static const struct i2c_device_id wm8731_i2c_id[] = {
600 { "wm8731", 0 },
601 { }
602};
603MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
40e0aa64 604
40e0aa64
RP		 605static struct i2c_driver wm8731_i2c_driver = {
606 .driver = {
607 .name = "WM8731 I2C Codec",
608 .owner = THIS_MODULE,
609 },
81297c8a
JD		 610 .probe = wm8731_i2c_probe,
611 .remove = wm8731_i2c_remove,
612 .id_table = wm8731_i2c_id,
40e0aa64
RP		 613};
614
81297c8a
JD		 615static int wm8731_add_i2c_device(struct platform_device *pdev,
616 const struct wm8731_setup_data *setup)
617{
618 struct i2c_board_info info;
619 struct i2c_adapter *adapter;
620 struct i2c_client *client;
621 int ret;
622
623 ret = i2c_add_driver(&wm8731_i2c_driver);
624 if (ret != 0) {
625 dev_err(&pdev->dev, "can't add i2c driver\n");
626 return ret;
627 }
628
629 memset(&info, 0, sizeof(struct i2c_board_info));
630 info.addr = setup->i2c_address;
631 strlcpy(info.type, "wm8731", I2C_NAME_SIZE);
632
633 adapter = i2c_get_adapter(setup->i2c_bus);
634 if (!adapter) {
635 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
636 setup->i2c_bus);
637 goto err_driver;
638 }
639
640 client = i2c_new_device(adapter, &info);
641 i2c_put_adapter(adapter);
642 if (!client) {
643 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
644 (unsigned int)info.addr);
645 goto err_driver;
646 }
647
648 return 0;
649
650err_driver:
651 i2c_del_driver(&wm8731_i2c_driver);
652 return -ENODEV;
653}
40e0aa64
RP		 654#endif
655
d2a40355
CC		 656#if defined(CONFIG_SPI_MASTER)
657static int __devinit wm8731_spi_probe(struct spi_device *spi)
658{
659 struct snd_soc_device *socdev = wm8731_socdev;
660 struct snd_soc_codec *codec = socdev->codec;
661 int ret;
662
663 codec->control_data = spi;
664
665 ret = wm8731_init(socdev);
666 if (ret < 0)
667 dev_err(&spi->dev, "failed to initialise WM8731\n");
668
669 return ret;
670}
671
672static int __devexit wm8731_spi_remove(struct spi_device *spi)
673{
674 return 0;
675}
676
677static struct spi_driver wm8731_spi_driver = {
678 .driver = {
679 .name = "wm8731",
680 .bus = &spi_bus_type,
681 .owner = THIS_MODULE,
682 },
683 .probe = wm8731_spi_probe,
684 .remove = __devexit_p(wm8731_spi_remove),
685};
686
687static int wm8731_spi_write(struct spi_device *spi, const char *data, int len)
688{
689 struct spi_transfer t;
690 struct spi_message m;
8569be3c 691 u8 msg[2];
d2a40355
CC		 692
693 if (len <= 0)
694 return 0;
695
8569be3c
AH		 696 msg[0] = data[0];
697 msg[1] = data[1];
d2a40355
CC		 698
699 spi_message_init(&m);
700 memset(&t, 0, (sizeof t));
701
702 t.tx_buf = &msg[0];
703 t.len = len;
704
705 spi_message_add_tail(&t, &m);
706 spi_sync(spi, &m);
707
708 return len;
709}
710#endif /* CONFIG_SPI_MASTER */
711
40e0aa64
RP		 712static int wm8731_probe(struct platform_device *pdev)
713{
714 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
715 struct wm8731_setup_data *setup;
716 struct snd_soc_codec *codec;
b36d61d4 717 struct wm8731_priv *wm8731;
40e0aa64
RP		 718 int ret = 0;
719
a5c95e90 720 pr_info("WM8731 Audio Codec %s", WM8731_VERSION);
40e0aa64
RP		 721
722 setup = socdev->codec_data;
723 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
724 if (codec == NULL)
725 return -ENOMEM;
726
b36d61d4
FM		 727 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
728 if (wm8731 == NULL) {
729 kfree(codec);
730 return -ENOMEM;
731 }
732
733 codec->private_data = wm8731;
40e0aa64
RP		 734 socdev->codec = codec;
735 mutex_init(&codec->mutex);
736 INIT_LIST_HEAD(&codec->dapm_widgets);
737 INIT_LIST_HEAD(&codec->dapm_paths);
738
739 wm8731_socdev = socdev;
d2a40355
CC		 740 ret = -ENODEV;
741
d454aee9 742#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
40e0aa64 743 if (setup->i2c_address) {
40e0aa64 744 codec->hw_write = (hw_write_t)i2c_master_send;
81297c8a 745 ret = wm8731_add_i2c_device(pdev, setup);
40e0aa64 746 }
d2a40355
CC		 747#endif
748#if defined(CONFIG_SPI_MASTER)
749 if (setup->spi) {
750 codec->hw_write = (hw_write_t)wm8731_spi_write;
751 ret = spi_register_driver(&wm8731_spi_driver);
752 if (ret != 0)
753 printk(KERN_ERR "can't add spi driver");
754 }
40e0aa64 755#endif
3051e41a
JD		 756
757 if (ret != 0) {
758 kfree(codec->private_data);
759 kfree(codec);
760 }
40e0aa64
RP		 761 return ret;
762}
763
764/* power down chip */
765static int wm8731_remove(struct platform_device *pdev)
766{
767 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
768 struct snd_soc_codec *codec = socdev->codec;
769
770 if (codec->control_data)
0be9898a 771 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
40e0aa64
RP		 772
773 snd_soc_free_pcms(socdev);
774 snd_soc_dapm_free(socdev);
d454aee9 775#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
81297c8a 776 i2c_unregister_device(codec->control_data);
40e0aa64 777 i2c_del_driver(&wm8731_i2c_driver);
d2a40355
CC		 778#endif
779#if defined(CONFIG_SPI_MASTER)
780 spi_unregister_driver(&wm8731_spi_driver);
40e0aa64 781#endif
b36d61d4 782 kfree(codec->private_data);
40e0aa64
RP		 783 kfree(codec);
784
785 return 0;
786}
787
788struct snd_soc_codec_device soc_codec_dev_wm8731 = {
789 .probe = wm8731_probe,
790 .remove = wm8731_remove,
791 .suspend = wm8731_suspend,
792 .resume = wm8731_resume,
793};
40e0aa64
RP		 794EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731);
795
c9b3a40f 796static int __init wm8731_modinit(void)
64089b84
MB		 797{
798 return snd_soc_register_dai(&wm8731_dai);
799}
800module_init(wm8731_modinit);
801
802static void __exit wm8731_exit(void)
803{
804 snd_soc_unregister_dai(&wm8731_dai);
805}
806module_exit(wm8731_exit);
807
40e0aa64
RP		 808MODULE_DESCRIPTION("ASoC WM8731 driver");
809MODULE_AUTHOR("Richard Purdie");
810MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)