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Ian Lartey992bee42010-07-31 00:32:11 +01001/*
2 * wm8741.c -- WM8741 ALSA SoC Audio driver
3 *
Mark Brown656baae2012-05-23 12:39:07 +01004 * Copyright 2010-1 Wolfson Microelectronics plc
Ian Lartey992bee42010-07-31 00:32:11 +01005 *
6 * Author: Ian Lartey <ian@opensource.wolfsonmicro.com>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/init.h>
17#include <linux/delay.h>
18#include <linux/pm.h>
19#include <linux/i2c.h>
Mark Brown39e9b8d2011-08-03 17:30:57 +090020#include <linux/spi/spi.h>
Mark Brownfe98c0c2012-09-10 18:00:21 +080021#include <linux/regmap.h>
Ian Lartey992bee42010-07-31 00:32:11 +010022#include <linux/regulator/consumer.h>
23#include <linux/slab.h>
Mark Brown80080ec2011-08-03 17:31:26 +090024#include <linux/of_device.h>
Ian Lartey992bee42010-07-31 00:32:11 +010025#include <sound/core.h>
26#include <sound/pcm.h>
27#include <sound/pcm_params.h>
28#include <sound/soc.h>
Ian Lartey992bee42010-07-31 00:32:11 +010029#include <sound/initval.h>
30#include <sound/tlv.h>
31
32#include "wm8741.h"
33
Ian Lartey992bee42010-07-31 00:32:11 +010034#define WM8741_NUM_SUPPLIES 2
35static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = {
36 "AVDD",
37 "DVDD",
38};
39
Ian Lartey3fe4a5e2010-08-27 15:26:27 +010040#define WM8741_NUM_RATES 6
Ian Lartey992bee42010-07-31 00:32:11 +010041
42/* codec private data */
43struct wm8741_priv {
Sergej Sawazkic354b542015-05-13 11:39:01 +020044 struct wm8741_platform_data pdata;
Mark Brownfe98c0c2012-09-10 18:00:21 +080045 struct regmap *regmap;
Ian Lartey992bee42010-07-31 00:32:11 +010046 struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES];
47 unsigned int sysclk;
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +010048 const struct snd_pcm_hw_constraint_list *sysclk_constraints;
Ian Lartey992bee42010-07-31 00:32:11 +010049};
50
Mark Brownfe98c0c2012-09-10 18:00:21 +080051static const struct reg_default wm8741_reg_defaults[] = {
52 { 0, 0x0000 }, /* R0 - DACLLSB Attenuation */
53 { 1, 0x0000 }, /* R1 - DACLMSB Attenuation */
54 { 2, 0x0000 }, /* R2 - DACRLSB Attenuation */
55 { 3, 0x0000 }, /* R3 - DACRMSB Attenuation */
56 { 4, 0x0000 }, /* R4 - Volume Control */
57 { 5, 0x000A }, /* R5 - Format Control */
58 { 6, 0x0000 }, /* R6 - Filter Control */
59 { 7, 0x0000 }, /* R7 - Mode Control 1 */
60 { 8, 0x0002 }, /* R8 - Mode Control 2 */
61 { 32, 0x0002 }, /* R32 - ADDITONAL_CONTROL_1 */
Ian Lartey992bee42010-07-31 00:32:11 +010062};
63
Mark Brownfe98c0c2012-09-10 18:00:21 +080064static bool wm8741_readable(struct device *dev, unsigned int reg)
65{
66 switch (reg) {
67 case WM8741_DACLLSB_ATTENUATION:
68 case WM8741_DACLMSB_ATTENUATION:
69 case WM8741_DACRLSB_ATTENUATION:
70 case WM8741_DACRMSB_ATTENUATION:
71 case WM8741_VOLUME_CONTROL:
72 case WM8741_FORMAT_CONTROL:
73 case WM8741_FILTER_CONTROL:
74 case WM8741_MODE_CONTROL_1:
75 case WM8741_MODE_CONTROL_2:
76 case WM8741_ADDITIONAL_CONTROL_1:
77 return true;
78 default:
79 return false;
80 }
81}
Ian Lartey992bee42010-07-31 00:32:11 +010082
83static int wm8741_reset(struct snd_soc_codec *codec)
84{
85 return snd_soc_write(codec, WM8741_RESET, 0);
86}
87
88static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, -12700, 13, 0);
89static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 400, 0);
90
Sergej Sawazkic354b542015-05-13 11:39:01 +020091static const struct snd_kcontrol_new wm8741_snd_controls_stereo[] = {
Ian Lartey992bee42010-07-31 00:32:11 +010092SOC_DOUBLE_R_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
93 WM8741_DACRLSB_ATTENUATION, 1, 255, 1, dac_tlv_fine),
94SOC_DOUBLE_R_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION,
95 WM8741_DACRMSB_ATTENUATION, 0, 511, 1, dac_tlv),
96};
97
Sergej Sawazkic354b542015-05-13 11:39:01 +020098static const struct snd_kcontrol_new wm8741_snd_controls_mono_left[] = {
99SOC_SINGLE_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
100 1, 255, 1, dac_tlv_fine),
101SOC_SINGLE_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION,
102 0, 511, 1, dac_tlv),
103};
104
105static const struct snd_kcontrol_new wm8741_snd_controls_mono_right[] = {
106SOC_SINGLE_TLV("Fine Playback Volume", WM8741_DACRLSB_ATTENUATION,
107 1, 255, 1, dac_tlv_fine),
108SOC_SINGLE_TLV("Playback Volume", WM8741_DACRMSB_ATTENUATION,
109 0, 511, 1, dac_tlv),
110};
111
Ian Lartey992bee42010-07-31 00:32:11 +0100112static const struct snd_soc_dapm_widget wm8741_dapm_widgets[] = {
113SND_SOC_DAPM_DAC("DACL", "Playback", SND_SOC_NOPM, 0, 0),
114SND_SOC_DAPM_DAC("DACR", "Playback", SND_SOC_NOPM, 0, 0),
115SND_SOC_DAPM_OUTPUT("VOUTLP"),
116SND_SOC_DAPM_OUTPUT("VOUTLN"),
117SND_SOC_DAPM_OUTPUT("VOUTRP"),
118SND_SOC_DAPM_OUTPUT("VOUTRN"),
119};
120
Mark Brown0e627802011-12-03 17:15:06 +0000121static const struct snd_soc_dapm_route wm8741_dapm_routes[] = {
Ian Lartey992bee42010-07-31 00:32:11 +0100122 { "VOUTLP", NULL, "DACL" },
123 { "VOUTLN", NULL, "DACL" },
124 { "VOUTRP", NULL, "DACR" },
125 { "VOUTRN", NULL, "DACR" },
126};
127
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100128static const unsigned int rates_11289[] = {
Sergej Sawazki87870412015-03-24 21:13:22 +0100129 44100, 88200,
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100130};
131
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100132static const struct snd_pcm_hw_constraint_list constraints_11289 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100133 .count = ARRAY_SIZE(rates_11289),
134 .list = rates_11289,
135};
136
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100137static const unsigned int rates_12288[] = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100138 32000, 48000, 96000,
139};
140
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100141static const struct snd_pcm_hw_constraint_list constraints_12288 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100142 .count = ARRAY_SIZE(rates_12288),
143 .list = rates_12288,
144};
145
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100146static const unsigned int rates_16384[] = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100147 32000,
148};
149
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100150static const struct snd_pcm_hw_constraint_list constraints_16384 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100151 .count = ARRAY_SIZE(rates_16384),
152 .list = rates_16384,
153};
154
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100155static const unsigned int rates_16934[] = {
Sergej Sawazki87870412015-03-24 21:13:22 +0100156 44100, 88200,
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100157};
158
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100159static const struct snd_pcm_hw_constraint_list constraints_16934 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100160 .count = ARRAY_SIZE(rates_16934),
161 .list = rates_16934,
162};
163
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100164static const unsigned int rates_18432[] = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100165 48000, 96000,
166};
167
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100168static const struct snd_pcm_hw_constraint_list constraints_18432 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100169 .count = ARRAY_SIZE(rates_18432),
170 .list = rates_18432,
171};
172
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100173static const unsigned int rates_22579[] = {
Sergej Sawazki87870412015-03-24 21:13:22 +0100174 44100, 88200, 176400
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100175};
176
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100177static const struct snd_pcm_hw_constraint_list constraints_22579 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100178 .count = ARRAY_SIZE(rates_22579),
179 .list = rates_22579,
180};
181
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100182static const unsigned int rates_24576[] = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100183 32000, 48000, 96000, 192000
184};
185
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100186static const struct snd_pcm_hw_constraint_list constraints_24576 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100187 .count = ARRAY_SIZE(rates_24576),
188 .list = rates_24576,
189};
190
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100191static const unsigned int rates_36864[] = {
Sergej Sawazki87870412015-03-24 21:13:22 +0100192 48000, 96000, 192000
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100193};
194
Lars-Peter Clausen70bad2c2014-02-05 21:54:35 +0100195static const struct snd_pcm_hw_constraint_list constraints_36864 = {
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100196 .count = ARRAY_SIZE(rates_36864),
197 .list = rates_36864,
Ian Lartey992bee42010-07-31 00:32:11 +0100198};
199
Ian Lartey992bee42010-07-31 00:32:11 +0100200static int wm8741_startup(struct snd_pcm_substream *substream,
201 struct snd_soc_dai *dai)
202{
203 struct snd_soc_codec *codec = dai->codec;
204 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
205
Sergej Sawazkie369bd02015-06-06 11:25:48 +0200206 if (wm8741->sysclk)
207 snd_pcm_hw_constraint_list(substream->runtime, 0,
208 SNDRV_PCM_HW_PARAM_RATE,
209 wm8741->sysclk_constraints);
Ian Lartey992bee42010-07-31 00:32:11 +0100210
211 return 0;
212}
213
214static int wm8741_hw_params(struct snd_pcm_substream *substream,
215 struct snd_pcm_hw_params *params,
216 struct snd_soc_dai *dai)
217{
Mark Browne6968a12012-04-04 15:58:16 +0100218 struct snd_soc_codec *codec = dai->codec;
Ian Lartey992bee42010-07-31 00:32:11 +0100219 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
220 u16 iface = snd_soc_read(codec, WM8741_FORMAT_CONTROL) & 0x1FC;
221 int i;
222
Sergej Sawazkie369bd02015-06-06 11:25:48 +0200223 /* The set of sample rates that can be supported depends on the
224 * MCLK supplied to the CODEC - enforce this.
225 */
226 if (!wm8741->sysclk) {
227 dev_err(codec->dev,
228 "No MCLK configured, call set_sysclk() on init or in hw_params\n");
229 return -EINVAL;
230 }
231
232 /* Find a supported LRCLK rate */
233 for (i = 0; i < wm8741->sysclk_constraints->count; i++) {
234 if (wm8741->sysclk_constraints->list[i] == params_rate(params))
Ian Lartey992bee42010-07-31 00:32:11 +0100235 break;
236 }
237
Sergej Sawazkie369bd02015-06-06 11:25:48 +0200238 if (i == wm8741->sysclk_constraints->count) {
239 dev_err(codec->dev, "LRCLK %d unsupported with MCLK %d\n",
240 params_rate(params), wm8741->sysclk);
Ian Lartey992bee42010-07-31 00:32:11 +0100241 return -EINVAL;
242 }
243
244 /* bit size */
Mark Brown34967ad2014-07-31 12:51:45 +0100245 switch (params_width(params)) {
246 case 16:
Ian Lartey992bee42010-07-31 00:32:11 +0100247 break;
Mark Brown34967ad2014-07-31 12:51:45 +0100248 case 20:
Ian Lartey992bee42010-07-31 00:32:11 +0100249 iface |= 0x0001;
250 break;
Mark Brown34967ad2014-07-31 12:51:45 +0100251 case 24:
Ian Lartey992bee42010-07-31 00:32:11 +0100252 iface |= 0x0002;
253 break;
Mark Brown34967ad2014-07-31 12:51:45 +0100254 case 32:
Ian Lartey992bee42010-07-31 00:32:11 +0100255 iface |= 0x0003;
256 break;
257 default:
258 dev_dbg(codec->dev, "wm8741_hw_params: Unsupported bit size param = %d",
Mark Brown34967ad2014-07-31 12:51:45 +0100259 params_width(params));
Ian Lartey992bee42010-07-31 00:32:11 +0100260 return -EINVAL;
261 }
262
Sergej Sawazkie369bd02015-06-06 11:25:48 +0200263 dev_dbg(codec->dev, "wm8741_hw_params: bit size param = %d, rate param = %d",
264 params_width(params), params_rate(params));
Ian Lartey992bee42010-07-31 00:32:11 +0100265
266 snd_soc_write(codec, WM8741_FORMAT_CONTROL, iface);
267 return 0;
268}
269
270static int wm8741_set_dai_sysclk(struct snd_soc_dai *codec_dai,
271 int clk_id, unsigned int freq, int dir)
272{
273 struct snd_soc_codec *codec = codec_dai->codec;
274 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
Ian Lartey992bee42010-07-31 00:32:11 +0100275
276 dev_dbg(codec->dev, "wm8741_set_dai_sysclk info: freq=%dHz\n", freq);
277
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100278 switch (freq) {
Sergej Sawazkie369bd02015-06-06 11:25:48 +0200279 case 0:
280 wm8741->sysclk_constraints = NULL;
281 wm8741->sysclk = freq;
282 return 0;
283
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100284 case 11289600:
285 wm8741->sysclk_constraints = &constraints_11289;
286 wm8741->sysclk = freq;
287 return 0;
Ian Lartey992bee42010-07-31 00:32:11 +0100288
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100289 case 12288000:
290 wm8741->sysclk_constraints = &constraints_12288;
291 wm8741->sysclk = freq;
292 return 0;
Ian Lartey992bee42010-07-31 00:32:11 +0100293
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100294 case 16384000:
295 wm8741->sysclk_constraints = &constraints_16384;
296 wm8741->sysclk = freq;
297 return 0;
Ian Lartey992bee42010-07-31 00:32:11 +0100298
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100299 case 16934400:
300 wm8741->sysclk_constraints = &constraints_16934;
301 wm8741->sysclk = freq;
302 return 0;
303
304 case 18432000:
305 wm8741->sysclk_constraints = &constraints_18432;
306 wm8741->sysclk = freq;
307 return 0;
308
309 case 22579200:
310 case 33868800:
311 wm8741->sysclk_constraints = &constraints_22579;
312 wm8741->sysclk = freq;
313 return 0;
314
315 case 24576000:
316 wm8741->sysclk_constraints = &constraints_24576;
317 wm8741->sysclk = freq;
318 return 0;
319
320 case 36864000:
321 wm8741->sysclk_constraints = &constraints_36864;
322 wm8741->sysclk = freq;
323 return 0;
Ian Lartey992bee42010-07-31 00:32:11 +0100324 }
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100325 return -EINVAL;
Ian Lartey992bee42010-07-31 00:32:11 +0100326}
327
328static int wm8741_set_dai_fmt(struct snd_soc_dai *codec_dai,
329 unsigned int fmt)
330{
331 struct snd_soc_codec *codec = codec_dai->codec;
332 u16 iface = snd_soc_read(codec, WM8741_FORMAT_CONTROL) & 0x1C3;
333
334 /* check master/slave audio interface */
335 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
336 case SND_SOC_DAIFMT_CBS_CFS:
337 break;
338 default:
339 return -EINVAL;
340 }
341
342 /* interface format */
343 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
344 case SND_SOC_DAIFMT_I2S:
345 iface |= 0x0008;
346 break;
347 case SND_SOC_DAIFMT_RIGHT_J:
348 break;
349 case SND_SOC_DAIFMT_LEFT_J:
350 iface |= 0x0004;
351 break;
352 case SND_SOC_DAIFMT_DSP_A:
Axel Lin3a340102011-10-17 20:14:56 +0800353 iface |= 0x000C;
Ian Lartey992bee42010-07-31 00:32:11 +0100354 break;
355 case SND_SOC_DAIFMT_DSP_B:
Axel Lin3a340102011-10-17 20:14:56 +0800356 iface |= 0x001C;
Ian Lartey992bee42010-07-31 00:32:11 +0100357 break;
358 default:
359 return -EINVAL;
360 }
361
362 /* clock inversion */
363 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
364 case SND_SOC_DAIFMT_NB_NF:
365 break;
366 case SND_SOC_DAIFMT_IB_IF:
367 iface |= 0x0010;
368 break;
369 case SND_SOC_DAIFMT_IB_NF:
370 iface |= 0x0020;
371 break;
372 case SND_SOC_DAIFMT_NB_IF:
373 iface |= 0x0030;
374 break;
375 default:
376 return -EINVAL;
377 }
378
379
380 dev_dbg(codec->dev, "wm8741_set_dai_fmt: Format=%x, Clock Inv=%x\n",
381 fmt & SND_SOC_DAIFMT_FORMAT_MASK,
382 ((fmt & SND_SOC_DAIFMT_INV_MASK)));
383
384 snd_soc_write(codec, WM8741_FORMAT_CONTROL, iface);
385 return 0;
386}
387
388#define WM8741_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
389 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
390 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \
391 SNDRV_PCM_RATE_192000)
392
393#define WM8741_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
394 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
395
Lars-Peter Clausen85e76522011-11-23 11:40:40 +0100396static const struct snd_soc_dai_ops wm8741_dai_ops = {
Ian Lartey992bee42010-07-31 00:32:11 +0100397 .startup = wm8741_startup,
398 .hw_params = wm8741_hw_params,
399 .set_sysclk = wm8741_set_dai_sysclk,
400 .set_fmt = wm8741_set_dai_fmt,
401};
402
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000403static struct snd_soc_dai_driver wm8741_dai = {
Ian Lartey30e2d362010-08-20 17:18:44 +0100404 .name = "wm8741",
Ian Lartey992bee42010-07-31 00:32:11 +0100405 .playback = {
406 .stream_name = "Playback",
Sergej Sawazkic354b542015-05-13 11:39:01 +0200407 .channels_min = 2,
Ian Lartey992bee42010-07-31 00:32:11 +0100408 .channels_max = 2,
409 .rates = WM8741_RATES,
410 .formats = WM8741_FORMATS,
411 },
412 .ops = &wm8741_dai_ops,
413};
Ian Lartey992bee42010-07-31 00:32:11 +0100414
415#ifdef CONFIG_PM
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000416static int wm8741_resume(struct snd_soc_codec *codec)
Ian Lartey992bee42010-07-31 00:32:11 +0100417{
Axel Lindf3431b2011-10-17 20:16:37 +0800418 snd_soc_cache_sync(codec);
Ian Lartey992bee42010-07-31 00:32:11 +0100419 return 0;
420}
421#else
Ian Lartey992bee42010-07-31 00:32:11 +0100422#define wm8741_resume NULL
423#endif
424
Sergej Sawazkic354b542015-05-13 11:39:01 +0200425static int wm8741_configure(struct snd_soc_codec *codec)
426{
427 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
428
429 /* Configure differential mode */
430 switch (wm8741->pdata.diff_mode) {
431 case WM8741_DIFF_MODE_STEREO:
432 case WM8741_DIFF_MODE_STEREO_REVERSED:
433 case WM8741_DIFF_MODE_MONO_LEFT:
434 case WM8741_DIFF_MODE_MONO_RIGHT:
435 snd_soc_update_bits(codec, WM8741_MODE_CONTROL_2,
436 WM8741_DIFF_MASK,
437 wm8741->pdata.diff_mode << WM8741_DIFF_SHIFT);
438 break;
439 default:
440 return -EINVAL;
441 }
442
443 /* Change some default settings - latch VU */
444 snd_soc_update_bits(codec, WM8741_DACLLSB_ATTENUATION,
445 WM8741_UPDATELL, WM8741_UPDATELL);
446 snd_soc_update_bits(codec, WM8741_DACLMSB_ATTENUATION,
447 WM8741_UPDATELM, WM8741_UPDATELM);
448 snd_soc_update_bits(codec, WM8741_DACRLSB_ATTENUATION,
449 WM8741_UPDATERL, WM8741_UPDATERL);
450 snd_soc_update_bits(codec, WM8741_DACRMSB_ATTENUATION,
451 WM8741_UPDATERM, WM8741_UPDATERM);
452
453 return 0;
454}
455
456static int wm8741_add_controls(struct snd_soc_codec *codec)
457{
458 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
459
460 switch (wm8741->pdata.diff_mode) {
461 case WM8741_DIFF_MODE_STEREO:
462 case WM8741_DIFF_MODE_STEREO_REVERSED:
463 snd_soc_add_codec_controls(codec,
464 wm8741_snd_controls_stereo,
465 ARRAY_SIZE(wm8741_snd_controls_stereo));
466 break;
467 case WM8741_DIFF_MODE_MONO_LEFT:
468 snd_soc_add_codec_controls(codec,
469 wm8741_snd_controls_mono_left,
470 ARRAY_SIZE(wm8741_snd_controls_mono_left));
471 break;
472 case WM8741_DIFF_MODE_MONO_RIGHT:
473 snd_soc_add_codec_controls(codec,
474 wm8741_snd_controls_mono_right,
475 ARRAY_SIZE(wm8741_snd_controls_mono_right));
476 break;
477 default:
478 return -EINVAL;
479 }
480
481 return 0;
482}
483
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000484static int wm8741_probe(struct snd_soc_codec *codec)
Ian Lartey992bee42010-07-31 00:32:11 +0100485{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000486 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
Ian Lartey992bee42010-07-31 00:32:11 +0100487 int ret = 0;
Mark Brown398575d2011-08-03 17:16:11 +0900488
489 ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies),
490 wm8741->supplies);
491 if (ret != 0) {
492 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
493 goto err_get;
494 }
Ian Lartey992bee42010-07-31 00:32:11 +0100495
Ian Lartey992bee42010-07-31 00:32:11 +0100496 ret = wm8741_reset(codec);
497 if (ret < 0) {
498 dev_err(codec->dev, "Failed to issue reset\n");
Mark Brown398575d2011-08-03 17:16:11 +0900499 goto err_enable;
Ian Lartey992bee42010-07-31 00:32:11 +0100500 }
501
Sergej Sawazkic354b542015-05-13 11:39:01 +0200502 ret = wm8741_configure(codec);
503 if (ret < 0) {
504 dev_err(codec->dev, "Failed to change default settings\n");
505 goto err_enable;
506 }
507
508 ret = wm8741_add_controls(codec);
509 if (ret < 0) {
510 dev_err(codec->dev, "Failed to add controls\n");
511 goto err_enable;
512 }
Ian Lartey992bee42010-07-31 00:32:11 +0100513
Ian Lartey992bee42010-07-31 00:32:11 +0100514 dev_dbg(codec->dev, "Successful registration\n");
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000515 return ret;
Mark Brown398575d2011-08-03 17:16:11 +0900516
517err_enable:
518 regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
519err_get:
Mark Brown398575d2011-08-03 17:16:11 +0900520 return ret;
521}
522
523static int wm8741_remove(struct snd_soc_codec *codec)
524{
525 struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
526
527 regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
Mark Brown398575d2011-08-03 17:16:11 +0900528
529 return 0;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000530}
531
532static struct snd_soc_codec_driver soc_codec_dev_wm8741 = {
533 .probe = wm8741_probe,
Mark Brown398575d2011-08-03 17:16:11 +0900534 .remove = wm8741_remove,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000535 .resume = wm8741_resume,
Mark Brown0e627802011-12-03 17:15:06 +0000536
Mark Brown0e627802011-12-03 17:15:06 +0000537 .dapm_widgets = wm8741_dapm_widgets,
538 .num_dapm_widgets = ARRAY_SIZE(wm8741_dapm_widgets),
539 .dapm_routes = wm8741_dapm_routes,
540 .num_dapm_routes = ARRAY_SIZE(wm8741_dapm_routes),
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000541};
542
Mark Brown80080ec2011-08-03 17:31:26 +0900543static const struct of_device_id wm8741_of_match[] = {
544 { .compatible = "wlf,wm8741", },
545 { }
546};
547MODULE_DEVICE_TABLE(of, wm8741_of_match);
548
Mark Brownfe98c0c2012-09-10 18:00:21 +0800549static const struct regmap_config wm8741_regmap = {
550 .reg_bits = 7,
551 .val_bits = 9,
552 .max_register = WM8741_MAX_REGISTER,
553
554 .reg_defaults = wm8741_reg_defaults,
555 .num_reg_defaults = ARRAY_SIZE(wm8741_reg_defaults),
556 .cache_type = REGCACHE_RBTREE,
557
558 .readable_reg = wm8741_readable,
559};
560
Sergej Sawazkic354b542015-05-13 11:39:01 +0200561static int wm8741_set_pdata(struct device *dev, struct wm8741_priv *wm8741)
562{
563 const struct wm8741_platform_data *pdata = dev_get_platdata(dev);
564 u32 diff_mode;
565
566 if (dev->of_node) {
567 if (of_property_read_u32(dev->of_node, "diff-mode", &diff_mode)
568 >= 0)
569 wm8741->pdata.diff_mode = diff_mode;
570 } else {
571 if (pdata != NULL)
572 memcpy(&wm8741->pdata, pdata, sizeof(wm8741->pdata));
573 }
574
575 return 0;
576}
577
Fabio Estevam26090a82013-11-21 12:38:45 -0200578#if IS_ENABLED(CONFIG_I2C)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000579static int wm8741_i2c_probe(struct i2c_client *i2c,
580 const struct i2c_device_id *id)
581{
582 struct wm8741_priv *wm8741;
Mark Brownd9780552012-09-10 17:52:59 +0800583 int ret, i;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000584
Mark Brown5aefb302011-12-03 17:17:05 +0000585 wm8741 = devm_kzalloc(&i2c->dev, sizeof(struct wm8741_priv),
586 GFP_KERNEL);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000587 if (wm8741 == NULL)
588 return -ENOMEM;
589
Mark Brownd9780552012-09-10 17:52:59 +0800590 for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
591 wm8741->supplies[i].supply = wm8741_supply_names[i];
592
593 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies),
594 wm8741->supplies);
595 if (ret != 0) {
Mark Brownfe98c0c2012-09-10 18:00:21 +0800596 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
597 return ret;
598 }
599
Tushar Beherafd64c452012-11-22 09:38:37 +0530600 wm8741->regmap = devm_regmap_init_i2c(i2c, &wm8741_regmap);
Mark Brownfe98c0c2012-09-10 18:00:21 +0800601 if (IS_ERR(wm8741->regmap)) {
602 ret = PTR_ERR(wm8741->regmap);
603 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
604 return ret;
Mark Brownd9780552012-09-10 17:52:59 +0800605 }
606
Dan Carpenter2d52d172015-05-20 10:40:35 +0300607 ret = wm8741_set_pdata(&i2c->dev, wm8741);
Sergej Sawazkic354b542015-05-13 11:39:01 +0200608 if (ret != 0) {
609 dev_err(&i2c->dev, "Failed to set pdata: %d\n", ret);
610 return ret;
611 }
612
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000613 i2c_set_clientdata(i2c, wm8741);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000614
Mark Brown398575d2011-08-03 17:16:11 +0900615 ret = snd_soc_register_codec(&i2c->dev,
616 &soc_codec_dev_wm8741, &wm8741_dai, 1);
Mark Brown398575d2011-08-03 17:16:11 +0900617
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000618 return ret;
Ian Lartey992bee42010-07-31 00:32:11 +0100619}
620
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000621static int wm8741_i2c_remove(struct i2c_client *client)
Ian Lartey992bee42010-07-31 00:32:11 +0100622{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000623 snd_soc_unregister_codec(&client->dev);
Ian Lartey992bee42010-07-31 00:32:11 +0100624 return 0;
625}
626
627static const struct i2c_device_id wm8741_i2c_id[] = {
628 { "wm8741", 0 },
629 { }
630};
631MODULE_DEVICE_TABLE(i2c, wm8741_i2c_id);
632
Ian Lartey992bee42010-07-31 00:32:11 +0100633static struct i2c_driver wm8741_i2c_driver = {
634 .driver = {
Mark Brown0473e612011-08-03 16:52:10 +0900635 .name = "wm8741",
Ian Lartey992bee42010-07-31 00:32:11 +0100636 .owner = THIS_MODULE,
Mark Brown80080ec2011-08-03 17:31:26 +0900637 .of_match_table = wm8741_of_match,
Ian Lartey992bee42010-07-31 00:32:11 +0100638 },
639 .probe = wm8741_i2c_probe,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000640 .remove = wm8741_i2c_remove,
Ian Lartey992bee42010-07-31 00:32:11 +0100641 .id_table = wm8741_i2c_id,
642};
643#endif
644
Mark Brown39e9b8d2011-08-03 17:30:57 +0900645#if defined(CONFIG_SPI_MASTER)
Bill Pemberton7a79e942012-12-07 09:26:37 -0500646static int wm8741_spi_probe(struct spi_device *spi)
Mark Brown39e9b8d2011-08-03 17:30:57 +0900647{
648 struct wm8741_priv *wm8741;
Mark Brownd9780552012-09-10 17:52:59 +0800649 int ret, i;
Mark Brown39e9b8d2011-08-03 17:30:57 +0900650
Mark Brown5aefb302011-12-03 17:17:05 +0000651 wm8741 = devm_kzalloc(&spi->dev, sizeof(struct wm8741_priv),
652 GFP_KERNEL);
Mark Brown39e9b8d2011-08-03 17:30:57 +0900653 if (wm8741 == NULL)
654 return -ENOMEM;
655
Mark Brownd9780552012-09-10 17:52:59 +0800656 for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
657 wm8741->supplies[i].supply = wm8741_supply_names[i];
658
Mark Brownfe98c0c2012-09-10 18:00:21 +0800659 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8741->supplies),
Mark Brownd9780552012-09-10 17:52:59 +0800660 wm8741->supplies);
661 if (ret != 0) {
662 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
Mark Brownfe98c0c2012-09-10 18:00:21 +0800663 return ret;
Mark Brownd9780552012-09-10 17:52:59 +0800664 }
665
Tushar Beherafd64c452012-11-22 09:38:37 +0530666 wm8741->regmap = devm_regmap_init_spi(spi, &wm8741_regmap);
Mark Brownfe98c0c2012-09-10 18:00:21 +0800667 if (IS_ERR(wm8741->regmap)) {
668 ret = PTR_ERR(wm8741->regmap);
669 dev_err(&spi->dev, "Failed to init regmap: %d\n", ret);
670 return ret;
671 }
672
Dan Carpenter2d52d172015-05-20 10:40:35 +0300673 ret = wm8741_set_pdata(&spi->dev, wm8741);
Sergej Sawazkic354b542015-05-13 11:39:01 +0200674 if (ret != 0) {
675 dev_err(&spi->dev, "Failed to set pdata: %d\n", ret);
676 return ret;
677 }
678
Mark Brown39e9b8d2011-08-03 17:30:57 +0900679 spi_set_drvdata(spi, wm8741);
680
681 ret = snd_soc_register_codec(&spi->dev,
682 &soc_codec_dev_wm8741, &wm8741_dai, 1);
Mark Brown39e9b8d2011-08-03 17:30:57 +0900683 return ret;
684}
685
Bill Pemberton7a79e942012-12-07 09:26:37 -0500686static int wm8741_spi_remove(struct spi_device *spi)
Mark Brown39e9b8d2011-08-03 17:30:57 +0900687{
688 snd_soc_unregister_codec(&spi->dev);
Mark Brown39e9b8d2011-08-03 17:30:57 +0900689 return 0;
690}
691
692static struct spi_driver wm8741_spi_driver = {
693 .driver = {
694 .name = "wm8741",
695 .owner = THIS_MODULE,
Mark Brown80080ec2011-08-03 17:31:26 +0900696 .of_match_table = wm8741_of_match,
Mark Brown39e9b8d2011-08-03 17:30:57 +0900697 },
698 .probe = wm8741_spi_probe,
Bill Pemberton7a79e942012-12-07 09:26:37 -0500699 .remove = wm8741_spi_remove,
Mark Brown39e9b8d2011-08-03 17:30:57 +0900700};
701#endif /* CONFIG_SPI_MASTER */
702
Ian Lartey992bee42010-07-31 00:32:11 +0100703static int __init wm8741_modinit(void)
704{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000705 int ret = 0;
706
Fabio Estevam26090a82013-11-21 12:38:45 -0200707#if IS_ENABLED(CONFIG_I2C)
Ian Lartey992bee42010-07-31 00:32:11 +0100708 ret = i2c_add_driver(&wm8741_i2c_driver);
Ian Lartey3fe4a5e2010-08-27 15:26:27 +0100709 if (ret != 0)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000710 pr_err("Failed to register WM8741 I2C driver: %d\n", ret);
Ian Lartey992bee42010-07-31 00:32:11 +0100711#endif
Mark Brown39e9b8d2011-08-03 17:30:57 +0900712#if defined(CONFIG_SPI_MASTER)
713 ret = spi_register_driver(&wm8741_spi_driver);
714 if (ret != 0) {
715 printk(KERN_ERR "Failed to register wm8741 SPI driver: %d\n",
716 ret);
717 }
718#endif
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000719
720 return ret;
Ian Lartey992bee42010-07-31 00:32:11 +0100721}
722module_init(wm8741_modinit);
723
724static void __exit wm8741_exit(void)
725{
Mark Brown39e9b8d2011-08-03 17:30:57 +0900726#if defined(CONFIG_SPI_MASTER)
727 spi_unregister_driver(&wm8741_spi_driver);
728#endif
Fabio Estevam26090a82013-11-21 12:38:45 -0200729#if IS_ENABLED(CONFIG_I2C)
Ian Lartey992bee42010-07-31 00:32:11 +0100730 i2c_del_driver(&wm8741_i2c_driver);
731#endif
732}
733module_exit(wm8741_exit);
734
735MODULE_DESCRIPTION("ASoC WM8741 driver");
736MODULE_AUTHOR("Ian Lartey <ian@opensource.wolfsonmicro.com>");
737MODULE_LICENSE("GPL");