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Mark Brown924914e2009-08-04 23:50:16 +01001/*
2 * wm8776.c -- WM8776 ALSA SoC Audio driver
3 *
4 * Copyright 2009 Wolfson Microelectronics plc
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * TODO: Input ALC/limiter support
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>
Mark Brownb6de4312011-08-29 14:14:45 +010021#include <linux/of_device.h>
Mark Brown924914e2009-08-04 23:50:16 +010022#include <linux/spi/spi.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090023#include <linux/slab.h>
Mark Brown924914e2009-08-04 23:50:16 +010024#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
Mark Brown924914e2009-08-04 23:50:16 +010028#include <sound/initval.h>
29#include <sound/tlv.h>
30
31#include "wm8776.h"
32
Mark Brownfdd48f92012-02-21 09:12:25 +000033enum wm8776_chip_type {
34 WM8775 = 1,
35 WM8776,
36};
37
Mark Brown924914e2009-08-04 23:50:16 +010038/* codec private data */
39struct wm8776_priv {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000040 enum snd_soc_control_type control_type;
Mark Brown924914e2009-08-04 23:50:16 +010041 int sysclk[2];
42};
43
Mark Brown924914e2009-08-04 23:50:16 +010044static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
45 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */
46 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */
47 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */
48 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */
49 0xa6, 0x01, 0x01
50};
51
Mark Brown924914e2009-08-04 23:50:16 +010052static int wm8776_reset(struct snd_soc_codec *codec)
53{
Mark Brown35b12072009-08-08 10:37:33 +010054 return snd_soc_write(codec, WM8776_RESET, 0);
Mark Brown924914e2009-08-04 23:50:16 +010055}
56
57static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
58static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
59static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
60
61static const struct snd_kcontrol_new wm8776_snd_controls[] = {
62SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
63 0, 127, 0, hp_tlv),
64SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
65 0, 255, 0, dac_tlv),
66SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),
67
68SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),
69
70SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
71 0, 255, 0, adc_tlv),
72SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
73SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
74SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
75};
76
77static const struct snd_kcontrol_new inmix_controls[] = {
78SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
79SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
80SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
81SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
82SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
83};
84
85static const struct snd_kcontrol_new outmix_controls[] = {
86SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
87SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
88SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
89};
90
91static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
92SND_SOC_DAPM_INPUT("AUX"),
Mark Brown924914e2009-08-04 23:50:16 +010093
94SND_SOC_DAPM_INPUT("AIN1"),
95SND_SOC_DAPM_INPUT("AIN2"),
96SND_SOC_DAPM_INPUT("AIN3"),
97SND_SOC_DAPM_INPUT("AIN4"),
98SND_SOC_DAPM_INPUT("AIN5"),
99
100SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
101 inmix_controls, ARRAY_SIZE(inmix_controls)),
102
103SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
104SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),
105
106SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
107 outmix_controls, ARRAY_SIZE(outmix_controls)),
108
109SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),
110
111SND_SOC_DAPM_OUTPUT("VOUT"),
112
113SND_SOC_DAPM_OUTPUT("HPOUTL"),
114SND_SOC_DAPM_OUTPUT("HPOUTR"),
115};
116
117static const struct snd_soc_dapm_route routes[] = {
118 { "Input Mixer", "AIN1 Switch", "AIN1" },
119 { "Input Mixer", "AIN2 Switch", "AIN2" },
120 { "Input Mixer", "AIN3 Switch", "AIN3" },
121 { "Input Mixer", "AIN4 Switch", "AIN4" },
122 { "Input Mixer", "AIN5 Switch", "AIN5" },
123
124 { "ADC", NULL, "Input Mixer" },
125
126 { "Output Mixer", "DAC Switch", "DAC" },
127 { "Output Mixer", "AUX Switch", "AUX" },
128 { "Output Mixer", "Bypass Switch", "Input Mixer" },
129
130 { "VOUT", NULL, "Output Mixer" },
131
132 { "Headphone PGA", NULL, "Output Mixer" },
133
134 { "HPOUTL", NULL, "Headphone PGA" },
135 { "HPOUTR", NULL, "Headphone PGA" },
136};
137
138static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
139{
140 struct snd_soc_codec *codec = dai->codec;
141 int reg, iface, master;
142
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000143 switch (dai->driver->id) {
Mark Brown924914e2009-08-04 23:50:16 +0100144 case WM8776_DAI_DAC:
145 reg = WM8776_DACIFCTRL;
146 master = 0x80;
147 break;
148 case WM8776_DAI_ADC:
149 reg = WM8776_ADCIFCTRL;
150 master = 0x100;
151 break;
152 default:
153 return -EINVAL;
154 }
155
156 iface = 0;
157
158 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
159 case SND_SOC_DAIFMT_CBM_CFM:
160 break;
161 case SND_SOC_DAIFMT_CBS_CFS:
162 master = 0;
163 break;
164 default:
165 return -EINVAL;
166 }
167
168 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
169 case SND_SOC_DAIFMT_I2S:
170 iface |= 0x0002;
171 break;
172 case SND_SOC_DAIFMT_RIGHT_J:
173 break;
174 case SND_SOC_DAIFMT_LEFT_J:
175 iface |= 0x0001;
176 break;
Mark Brown924914e2009-08-04 23:50:16 +0100177 default:
178 return -EINVAL;
179 }
180
181 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
182 case SND_SOC_DAIFMT_NB_NF:
183 break;
184 case SND_SOC_DAIFMT_IB_IF:
185 iface |= 0x00c;
186 break;
187 case SND_SOC_DAIFMT_IB_NF:
188 iface |= 0x008;
189 break;
190 case SND_SOC_DAIFMT_NB_IF:
191 iface |= 0x004;
192 break;
193 default:
194 return -EINVAL;
195 }
196
197 /* Finally, write out the values */
198 snd_soc_update_bits(codec, reg, 0xf, iface);
199 snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master);
200
201 return 0;
202}
203
204static int mclk_ratios[] = {
205 128,
206 192,
207 256,
208 384,
209 512,
210 768,
211};
212
213static int wm8776_hw_params(struct snd_pcm_substream *substream,
214 struct snd_pcm_hw_params *params,
215 struct snd_soc_dai *dai)
216{
217 struct snd_soc_codec *codec = dai->codec;
Mark Brownb2c812e2010-04-14 15:35:19 +0900218 struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
Mark Brown924914e2009-08-04 23:50:16 +0100219 int iface_reg, iface;
220 int ratio_shift, master;
221 int i;
222
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000223 switch (dai->driver->id) {
Mark Brown924914e2009-08-04 23:50:16 +0100224 case WM8776_DAI_DAC:
225 iface_reg = WM8776_DACIFCTRL;
226 master = 0x80;
227 ratio_shift = 4;
228 break;
229 case WM8776_DAI_ADC:
230 iface_reg = WM8776_ADCIFCTRL;
231 master = 0x100;
232 ratio_shift = 0;
233 break;
234 default:
235 return -EINVAL;
236 }
237
Mark Brown924914e2009-08-04 23:50:16 +0100238 /* Set word length */
Timur Tabid1dc6982011-09-13 12:59:35 -0500239 switch (snd_pcm_format_width(params_format(params))) {
240 case 16:
241 iface = 0;
Joachim Eastwood990fc3d2011-12-23 17:32:25 +0100242 break;
Timur Tabid1dc6982011-09-13 12:59:35 -0500243 case 20:
244 iface = 0x10;
Mark Brown924914e2009-08-04 23:50:16 +0100245 break;
Timur Tabid1dc6982011-09-13 12:59:35 -0500246 case 24:
247 iface = 0x20;
Mark Brown924914e2009-08-04 23:50:16 +0100248 break;
Timur Tabid1dc6982011-09-13 12:59:35 -0500249 case 32:
250 iface = 0x30;
Mark Brown924914e2009-08-04 23:50:16 +0100251 break;
Timur Tabid1dc6982011-09-13 12:59:35 -0500252 default:
253 dev_err(codec->dev, "Unsupported sample size: %i\n",
254 snd_pcm_format_width(params_format(params)));
255 return -EINVAL;
Mark Brown924914e2009-08-04 23:50:16 +0100256 }
257
258 /* Only need to set MCLK/LRCLK ratio if we're master */
259 if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) {
260 for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000261 if (wm8776->sysclk[dai->driver->id] / params_rate(params)
Mark Brown924914e2009-08-04 23:50:16 +0100262 == mclk_ratios[i])
263 break;
264 }
265
266 if (i == ARRAY_SIZE(mclk_ratios)) {
267 dev_err(codec->dev,
268 "Unable to configure MCLK ratio %d/%d\n",
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000269 wm8776->sysclk[dai->driver->id], params_rate(params));
Mark Brown924914e2009-08-04 23:50:16 +0100270 return -EINVAL;
271 }
272
273 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
274
275 snd_soc_update_bits(codec, WM8776_MSTRCTRL,
276 0x7 << ratio_shift, i << ratio_shift);
277 } else {
278 dev_dbg(codec->dev, "DAI in slave mode\n");
279 }
280
281 snd_soc_update_bits(codec, iface_reg, 0x30, iface);
282
283 return 0;
284}
285
286static int wm8776_mute(struct snd_soc_dai *dai, int mute)
287{
288 struct snd_soc_codec *codec = dai->codec;
289
290 return snd_soc_write(codec, WM8776_DACMUTE, !!mute);
291}
292
293static int wm8776_set_sysclk(struct snd_soc_dai *dai,
294 int clk_id, unsigned int freq, int dir)
295{
296 struct snd_soc_codec *codec = dai->codec;
Mark Brownb2c812e2010-04-14 15:35:19 +0900297 struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
Mark Brown924914e2009-08-04 23:50:16 +0100298
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000299 BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk));
Mark Brown924914e2009-08-04 23:50:16 +0100300
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000301 wm8776->sysclk[dai->driver->id] = freq;
Mark Brown924914e2009-08-04 23:50:16 +0100302
303 return 0;
304}
305
306static int wm8776_set_bias_level(struct snd_soc_codec *codec,
307 enum snd_soc_bias_level level)
308{
309 switch (level) {
310 case SND_SOC_BIAS_ON:
311 break;
312 case SND_SOC_BIAS_PREPARE:
313 break;
314 case SND_SOC_BIAS_STANDBY:
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200315 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
Axel Linabe11d02011-10-07 21:41:41 +0800316 snd_soc_cache_sync(codec);
317
Mark Brown924914e2009-08-04 23:50:16 +0100318 /* Disable the global powerdown; DAPM does the rest */
319 snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
320 }
321
322 break;
323 case SND_SOC_BIAS_OFF:
324 snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1);
325 break;
326 }
327
Liam Girdwoodce6120c2010-11-05 15:53:46 +0200328 codec->dapm.bias_level = level;
Mark Brown924914e2009-08-04 23:50:16 +0100329 return 0;
330}
331
Mark Brown924914e2009-08-04 23:50:16 +0100332#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
333 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
334
Lars-Peter Clausen85e76522011-11-23 11:40:40 +0100335static const struct snd_soc_dai_ops wm8776_dac_ops = {
Mark Brown924914e2009-08-04 23:50:16 +0100336 .digital_mute = wm8776_mute,
337 .hw_params = wm8776_hw_params,
338 .set_fmt = wm8776_set_fmt,
339 .set_sysclk = wm8776_set_sysclk,
340};
341
Lars-Peter Clausen85e76522011-11-23 11:40:40 +0100342static const struct snd_soc_dai_ops wm8776_adc_ops = {
Mark Brown924914e2009-08-04 23:50:16 +0100343 .hw_params = wm8776_hw_params,
344 .set_fmt = wm8776_set_fmt,
345 .set_sysclk = wm8776_set_sysclk,
346};
347
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000348static struct snd_soc_dai_driver wm8776_dai[] = {
Mark Brown924914e2009-08-04 23:50:16 +0100349 {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000350 .name = "wm8776-hifi-playback",
351 .id = WM8776_DAI_DAC,
Mark Brown924914e2009-08-04 23:50:16 +0100352 .playback = {
353 .stream_name = "Playback",
354 .channels_min = 2,
355 .channels_max = 2,
Timur Tabi00162262011-09-16 09:16:54 -0500356 .rates = SNDRV_PCM_RATE_CONTINUOUS,
357 .rate_min = 32000,
358 .rate_max = 192000,
Mark Brown924914e2009-08-04 23:50:16 +0100359 .formats = WM8776_FORMATS,
360 },
361 .ops = &wm8776_dac_ops,
362 },
363 {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000364 .name = "wm8776-hifi-capture",
365 .id = WM8776_DAI_ADC,
Mark Brown924914e2009-08-04 23:50:16 +0100366 .capture = {
367 .stream_name = "Capture",
368 .channels_min = 2,
369 .channels_max = 2,
Timur Tabi00162262011-09-16 09:16:54 -0500370 .rates = SNDRV_PCM_RATE_CONTINUOUS,
371 .rate_min = 32000,
372 .rate_max = 96000,
Mark Brown924914e2009-08-04 23:50:16 +0100373 .formats = WM8776_FORMATS,
374 },
375 .ops = &wm8776_adc_ops,
376 },
377};
Mark Brown924914e2009-08-04 23:50:16 +0100378
379#ifdef CONFIG_PM
Lars-Peter Clausen84b315e2011-12-02 10:18:28 +0100380static int wm8776_suspend(struct snd_soc_codec *codec)
Mark Brown924914e2009-08-04 23:50:16 +0100381{
Mark Brown924914e2009-08-04 23:50:16 +0100382 wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
383
384 return 0;
385}
386
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000387static int wm8776_resume(struct snd_soc_codec *codec)
Mark Brown924914e2009-08-04 23:50:16 +0100388{
Mark Brown924914e2009-08-04 23:50:16 +0100389 wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
Mark Brown924914e2009-08-04 23:50:16 +0100390 return 0;
391}
392#else
393#define wm8776_suspend NULL
394#define wm8776_resume NULL
395#endif
396
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000397static int wm8776_probe(struct snd_soc_codec *codec)
Mark Brown924914e2009-08-04 23:50:16 +0100398{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000399 struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
Mark Brown924914e2009-08-04 23:50:16 +0100400 int ret = 0;
401
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000402 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type);
Mark Brown35b12072009-08-08 10:37:33 +0100403 if (ret < 0) {
404 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000405 return ret;
Mark Brown35b12072009-08-08 10:37:33 +0100406 }
407
Mark Brown924914e2009-08-04 23:50:16 +0100408 ret = wm8776_reset(codec);
409 if (ret < 0) {
410 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000411 return ret;
Mark Brown924914e2009-08-04 23:50:16 +0100412 }
413
414 wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
415
416 /* Latch the update bits; right channel only since we always
417 * update both. */
418 snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
419 snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);
420
Mark Brown924914e2009-08-04 23:50:16 +0100421 return ret;
422}
423
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000424/* power down chip */
425static int wm8776_remove(struct snd_soc_codec *codec)
Mark Brown924914e2009-08-04 23:50:16 +0100426{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000427 wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
428 return 0;
Mark Brown924914e2009-08-04 23:50:16 +0100429}
430
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000431static struct snd_soc_codec_driver soc_codec_dev_wm8776 = {
432 .probe = wm8776_probe,
433 .remove = wm8776_remove,
434 .suspend = wm8776_suspend,
435 .resume = wm8776_resume,
436 .set_bias_level = wm8776_set_bias_level,
Dimitris Papastamose5eec342010-09-10 18:14:56 +0100437 .reg_cache_size = ARRAY_SIZE(wm8776_reg),
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000438 .reg_word_size = sizeof(u16),
439 .reg_cache_default = wm8776_reg,
Mark Brown1db3c982011-11-22 23:19:41 +0000440
441 .controls = wm8776_snd_controls,
442 .num_controls = ARRAY_SIZE(wm8776_snd_controls),
443 .dapm_widgets = wm8776_dapm_widgets,
444 .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
445 .dapm_routes = routes,
446 .num_dapm_routes = ARRAY_SIZE(routes),
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000447};
448
Mark Brownb6de4312011-08-29 14:14:45 +0100449static const struct of_device_id wm8776_of_match[] = {
450 { .compatible = "wlf,wm8776", },
451 { }
452};
453MODULE_DEVICE_TABLE(of, wm8776_of_match);
454
Mark Brown924914e2009-08-04 23:50:16 +0100455#if defined(CONFIG_SPI_MASTER)
Mark Brown924914e2009-08-04 23:50:16 +0100456static int __devinit wm8776_spi_probe(struct spi_device *spi)
457{
Mark Brown924914e2009-08-04 23:50:16 +0100458 struct wm8776_priv *wm8776;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000459 int ret;
Mark Brown924914e2009-08-04 23:50:16 +0100460
Mark Brownbf97ca92011-12-08 16:45:22 +0800461 wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
462 GFP_KERNEL);
Mark Brown924914e2009-08-04 23:50:16 +0100463 if (wm8776 == NULL)
464 return -ENOMEM;
465
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000466 wm8776->control_type = SND_SOC_SPI;
467 spi_set_drvdata(spi, wm8776);
Mark Brown924914e2009-08-04 23:50:16 +0100468
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000469 ret = snd_soc_register_codec(&spi->dev,
470 &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
Mark Brownbf97ca92011-12-08 16:45:22 +0800471
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000472 return ret;
Mark Brown924914e2009-08-04 23:50:16 +0100473}
474
475static int __devexit wm8776_spi_remove(struct spi_device *spi)
476{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000477 snd_soc_unregister_codec(&spi->dev);
Mark Brown924914e2009-08-04 23:50:16 +0100478 return 0;
479}
480
Mark Brown924914e2009-08-04 23:50:16 +0100481static struct spi_driver wm8776_spi_driver = {
482 .driver = {
Mark Brown1e3ad572011-08-29 14:10:42 +0100483 .name = "wm8776",
Mark Brown924914e2009-08-04 23:50:16 +0100484 .owner = THIS_MODULE,
Mark Brownb6de4312011-08-29 14:14:45 +0100485 .of_match_table = wm8776_of_match,
Mark Brown924914e2009-08-04 23:50:16 +0100486 },
487 .probe = wm8776_spi_probe,
Mark Brown924914e2009-08-04 23:50:16 +0100488 .remove = __devexit_p(wm8776_spi_remove),
489};
490#endif /* CONFIG_SPI_MASTER */
491
492#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
493static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
494 const struct i2c_device_id *id)
495{
496 struct wm8776_priv *wm8776;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000497 int ret;
Mark Brown924914e2009-08-04 23:50:16 +0100498
Mark Brownbf97ca92011-12-08 16:45:22 +0800499 wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
500 GFP_KERNEL);
Mark Brown924914e2009-08-04 23:50:16 +0100501 if (wm8776 == NULL)
502 return -ENOMEM;
503
Mark Brown924914e2009-08-04 23:50:16 +0100504 i2c_set_clientdata(i2c, wm8776);
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000505 wm8776->control_type = SND_SOC_I2C;
Mark Brown924914e2009-08-04 23:50:16 +0100506
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000507 ret = snd_soc_register_codec(&i2c->dev,
508 &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
Mark Brownbf97ca92011-12-08 16:45:22 +0800509
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000510 return ret;
Mark Brown924914e2009-08-04 23:50:16 +0100511}
512
513static __devexit int wm8776_i2c_remove(struct i2c_client *client)
514{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000515 snd_soc_unregister_codec(&client->dev);
Mark Brown924914e2009-08-04 23:50:16 +0100516 return 0;
517}
518
Mark Brown924914e2009-08-04 23:50:16 +0100519static const struct i2c_device_id wm8776_i2c_id[] = {
Mark Brownfdd48f92012-02-21 09:12:25 +0000520 { "wm8775", WM8775 },
521 { "wm8776", WM8776 },
Mark Brown924914e2009-08-04 23:50:16 +0100522 { }
523};
524MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
525
526static struct i2c_driver wm8776_i2c_driver = {
527 .driver = {
Mark Brown1e3ad572011-08-29 14:10:42 +0100528 .name = "wm8776",
Mark Brown924914e2009-08-04 23:50:16 +0100529 .owner = THIS_MODULE,
Mark Brownb6de4312011-08-29 14:14:45 +0100530 .of_match_table = wm8776_of_match,
Mark Brown924914e2009-08-04 23:50:16 +0100531 },
532 .probe = wm8776_i2c_probe,
533 .remove = __devexit_p(wm8776_i2c_remove),
Mark Brown924914e2009-08-04 23:50:16 +0100534 .id_table = wm8776_i2c_id,
535};
536#endif
537
538static int __init wm8776_modinit(void)
539{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000540 int ret = 0;
Mark Brown924914e2009-08-04 23:50:16 +0100541#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
542 ret = i2c_add_driver(&wm8776_i2c_driver);
543 if (ret != 0) {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000544 printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
Mark Brown924914e2009-08-04 23:50:16 +0100545 ret);
546 }
547#endif
548#if defined(CONFIG_SPI_MASTER)
549 ret = spi_register_driver(&wm8776_spi_driver);
550 if (ret != 0) {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000551 printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",
Mark Brown924914e2009-08-04 23:50:16 +0100552 ret);
553 }
554#endif
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000555 return ret;
Mark Brown924914e2009-08-04 23:50:16 +0100556}
557module_init(wm8776_modinit);
558
559static void __exit wm8776_exit(void)
560{
561#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
562 i2c_del_driver(&wm8776_i2c_driver);
563#endif
564#if defined(CONFIG_SPI_MASTER)
565 spi_unregister_driver(&wm8776_spi_driver);
566#endif
567}
568module_exit(wm8776_exit);
569
570MODULE_DESCRIPTION("ASoC WM8776 driver");
571MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
572MODULE_LICENSE("GPL");