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Richard Purdie796d2ca2008-06-23 14:51:28 +01001/*
2 * ak4535.c -- AK4535 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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090022#include <linux/slab.h>
Richard Purdie796d2ca2008-06-23 14:51:28 +010023#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 "ak4535.h"
31
Richard Purdie796d2ca2008-06-23 14:51:28 +010032#define AK4535_VERSION "0.3"
33
Richard Purdie796d2ca2008-06-23 14:51:28 +010034/* codec private data */
35struct ak4535_priv {
36 unsigned int sysclk;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000037 enum snd_soc_control_type control_type;
38 void *control_data;
Richard Purdie796d2ca2008-06-23 14:51:28 +010039};
40
41/*
42 * ak4535 register cache
43 */
44static const u16 ak4535_reg[AK4535_CACHEREGNUM] = {
45 0x0000, 0x0080, 0x0000, 0x0003,
46 0x0002, 0x0000, 0x0011, 0x0001,
47 0x0000, 0x0040, 0x0036, 0x0010,
48 0x0000, 0x0000, 0x0057, 0x0000,
49};
50
51/*
52 * read ak4535 register cache
53 */
54static inline unsigned int ak4535_read_reg_cache(struct snd_soc_codec *codec,
55 unsigned int reg)
56{
57 u16 *cache = codec->reg_cache;
58 if (reg >= AK4535_CACHEREGNUM)
59 return -1;
60 return cache[reg];
61}
62
Richard Purdie796d2ca2008-06-23 14:51:28 +010063/*
64 * write ak4535 register cache
65 */
66static inline void ak4535_write_reg_cache(struct snd_soc_codec *codec,
67 u16 reg, unsigned int value)
68{
69 u16 *cache = codec->reg_cache;
70 if (reg >= AK4535_CACHEREGNUM)
71 return;
72 cache[reg] = value;
73}
74
75/*
76 * write to the AK4535 register space
77 */
78static int ak4535_write(struct snd_soc_codec *codec, unsigned int reg,
79 unsigned int value)
80{
81 u8 data[2];
82
83 /* data is
84 * D15..D8 AK4535 register offset
85 * D7...D0 register data
86 */
87 data[0] = reg & 0xff;
88 data[1] = value & 0xff;
89
90 ak4535_write_reg_cache(codec, reg, value);
91 if (codec->hw_write(codec->control_data, data, 2) == 2)
92 return 0;
93 else
94 return -EIO;
95}
96
97static int ak4535_sync(struct snd_soc_codec *codec)
98{
99 u16 *cache = codec->reg_cache;
100 int i, r = 0;
101
102 for (i = 0; i < AK4535_CACHEREGNUM; i++)
103 r |= ak4535_write(codec, i, cache[i]);
104
105 return r;
106};
107
108static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
109static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
110static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
111static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
112static const char *ak4535_mic_select[] = {"Internal", "External"};
113
114static const struct soc_enum ak4535_enum[] = {
115 SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
116 SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
117 SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
118 SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
119 SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
120};
121
122static const struct snd_kcontrol_new ak4535_snd_controls[] = {
123 SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
124 SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
125 SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
126 SOC_ENUM("Headphone Output", ak4535_enum[2]),
127 SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
128 SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
129 SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
130 SOC_ENUM("Mic Select", ak4535_enum[4]),
131 SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
132 SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
133 SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
134 SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
135 SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
136 SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
137 SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
138 SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
139 SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
140 SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
141 SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
142};
143
Richard Purdie796d2ca2008-06-23 14:51:28 +0100144/* Mono 1 Mixer */
145static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
146 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
147 SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
148};
149
150/* Stereo Mixer */
151static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
152 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
153 SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
154 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
155};
156
157/* Input Mixer */
158static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
159 SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
160 SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
161};
162
163/* Input mux */
164static const struct snd_kcontrol_new ak4535_input_mux_control =
165 SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
166
167/* HP L switch */
168static const struct snd_kcontrol_new ak4535_hpl_control =
169 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
170
171/* HP R switch */
172static const struct snd_kcontrol_new ak4535_hpr_control =
173 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
174
175/* mono 2 switch */
176static const struct snd_kcontrol_new ak4535_mono2_control =
177 SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
178
179/* Line out switch */
180static const struct snd_kcontrol_new ak4535_line_control =
181 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
182
183/* ak4535 dapm widgets */
184static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
185 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
186 &ak4535_stereo_mixer_controls[0],
187 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
188 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
189 &ak4535_mono1_mixer_controls[0],
190 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
191 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
192 &ak4535_input_mixer_controls[0],
193 ARRAY_SIZE(ak4535_input_mixer_controls)),
194 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
195 &ak4535_input_mux_control),
196 SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
197 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
198 &ak4535_mono2_control),
199 /* speaker powersave bit */
200 SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
201 SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
202 &ak4535_line_control),
203 SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
204 &ak4535_hpl_control),
205 SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
206 &ak4535_hpr_control),
207 SND_SOC_DAPM_OUTPUT("LOUT"),
208 SND_SOC_DAPM_OUTPUT("HPL"),
209 SND_SOC_DAPM_OUTPUT("ROUT"),
210 SND_SOC_DAPM_OUTPUT("HPR"),
211 SND_SOC_DAPM_OUTPUT("SPP"),
212 SND_SOC_DAPM_OUTPUT("SPN"),
213 SND_SOC_DAPM_OUTPUT("MOUT1"),
214 SND_SOC_DAPM_OUTPUT("MOUT2"),
215 SND_SOC_DAPM_OUTPUT("MICOUT"),
216 SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
217 SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
218 SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
219 SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
220 SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
221 SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
222 SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
223 SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
224
225 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
226 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
227 SND_SOC_DAPM_INPUT("MICIN"),
228 SND_SOC_DAPM_INPUT("MICEXT"),
229 SND_SOC_DAPM_INPUT("AUX"),
230 SND_SOC_DAPM_INPUT("MIN"),
231 SND_SOC_DAPM_INPUT("AIN"),
232};
233
234static const struct snd_soc_dapm_route audio_map[] = {
235 /*stereo mixer */
236 {"Stereo Mixer", "Playback Switch", "DAC"},
237 {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
238 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
239
240 /* mono1 mixer */
241 {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
242 {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
243
244 /* Mic */
245 {"Mic", NULL, "AIN"},
246 {"Input Mux", "Internal", "Mic Int Bias"},
247 {"Input Mux", "External", "Mic Ext Bias"},
248 {"Mic Int Bias", NULL, "MICIN"},
249 {"Mic Ext Bias", NULL, "MICEXT"},
250 {"MICOUT", NULL, "Input Mux"},
251
252 /* line out */
253 {"LOUT", NULL, "Line Out Enable"},
254 {"ROUT", NULL, "Line Out Enable"},
255 {"Line Out Enable", "Switch", "Line Out"},
256 {"Line Out", NULL, "Stereo Mixer"},
257
258 /* mono1 out */
259 {"MOUT1", NULL, "Mono Out"},
260 {"Mono Out", NULL, "Mono1 Mixer"},
261
262 /* left HP */
263 {"HPL", NULL, "Left HP Enable"},
264 {"Left HP Enable", "Switch", "HP L Amp"},
265 {"HP L Amp", NULL, "Stereo Mixer"},
266
267 /* right HP */
268 {"HPR", NULL, "Right HP Enable"},
269 {"Right HP Enable", "Switch", "HP R Amp"},
270 {"HP R Amp", NULL, "Stereo Mixer"},
271
272 /* speaker */
273 {"SPP", NULL, "Speaker Enable"},
274 {"SPN", NULL, "Speaker Enable"},
275 {"Speaker Enable", "Switch", "Spk Amp"},
276 {"Spk Amp", NULL, "MIN"},
277
278 /* mono 2 */
279 {"MOUT2", NULL, "Mono 2 Enable"},
280 {"Mono 2 Enable", "Switch", "Stereo Mixer"},
281
282 /* Aux In */
283 {"Aux In", NULL, "AUX"},
284
285 /* ADC */
286 {"ADC", NULL, "Input Mixer"},
287 {"Input Mixer", "Mic Capture Switch", "Mic"},
288 {"Input Mixer", "Aux Capture Switch", "Aux In"},
289};
290
291static int ak4535_add_widgets(struct snd_soc_codec *codec)
292{
293 snd_soc_dapm_new_controls(codec, ak4535_dapm_widgets,
294 ARRAY_SIZE(ak4535_dapm_widgets));
295
296 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
297
Richard Purdie796d2ca2008-06-23 14:51:28 +0100298 return 0;
299}
300
Liam Girdwoode550e172008-07-07 16:07:52 +0100301static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100302 int clk_id, unsigned int freq, int dir)
303{
304 struct snd_soc_codec *codec = codec_dai->codec;
Mark Brownb2c812e2010-04-14 15:35:19 +0900305 struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100306
307 ak4535->sysclk = freq;
308 return 0;
309}
310
311static int ak4535_hw_params(struct snd_pcm_substream *substream,
Mark Browndee89c42008-11-18 22:11:38 +0000312 struct snd_pcm_hw_params *params,
313 struct snd_soc_dai *dai)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100314{
315 struct snd_soc_pcm_runtime *rtd = substream->private_data;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000316 struct snd_soc_codec *codec = rtd->codec;
Mark Brownb2c812e2010-04-14 15:35:19 +0900317 struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100318 u8 mode2 = ak4535_read_reg_cache(codec, AK4535_MODE2) & ~(0x3 << 5);
319 int rate = params_rate(params), fs = 256;
320
321 if (rate)
322 fs = ak4535->sysclk / rate;
323
324 /* set fs */
325 switch (fs) {
326 case 1024:
327 mode2 |= (0x2 << 5);
328 break;
329 case 512:
330 mode2 |= (0x1 << 5);
331 break;
332 case 256:
333 break;
334 }
335
336 /* set rate */
337 ak4535_write(codec, AK4535_MODE2, mode2);
338 return 0;
339}
340
Liam Girdwoode550e172008-07-07 16:07:52 +0100341static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100342 unsigned int fmt)
343{
344 struct snd_soc_codec *codec = codec_dai->codec;
345 u8 mode1 = 0;
346
347 /* interface format */
348 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
349 case SND_SOC_DAIFMT_I2S:
350 mode1 = 0x0002;
351 break;
352 case SND_SOC_DAIFMT_LEFT_J:
353 mode1 = 0x0001;
354 break;
355 default:
356 return -EINVAL;
357 }
358
359 /* use 32 fs for BCLK to save power */
360 mode1 |= 0x4;
361
362 ak4535_write(codec, AK4535_MODE1, mode1);
363 return 0;
364}
365
Liam Girdwoode550e172008-07-07 16:07:52 +0100366static int ak4535_mute(struct snd_soc_dai *dai, int mute)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100367{
368 struct snd_soc_codec *codec = dai->codec;
369 u16 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf;
370 if (!mute)
371 ak4535_write(codec, AK4535_DAC, mute_reg);
372 else
373 ak4535_write(codec, AK4535_DAC, mute_reg | 0x20);
374 return 0;
375}
376
377static int ak4535_set_bias_level(struct snd_soc_codec *codec,
378 enum snd_soc_bias_level level)
379{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000380 u16 i, mute_reg;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100381
382 switch (level) {
383 case SND_SOC_BIAS_ON:
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000384 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf;
385 ak4535_write(codec, AK4535_DAC, mute_reg);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100386 break;
387 case SND_SOC_BIAS_PREPARE:
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000388 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf;
389 ak4535_write(codec, AK4535_DAC, mute_reg | 0x20);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100390 break;
391 case SND_SOC_BIAS_STANDBY:
392 i = ak4535_read_reg_cache(codec, AK4535_PM1);
393 ak4535_write(codec, AK4535_PM1, i | 0x80);
394 i = ak4535_read_reg_cache(codec, AK4535_PM2);
395 ak4535_write(codec, AK4535_PM2, i & (~0x80));
396 break;
397 case SND_SOC_BIAS_OFF:
398 i = ak4535_read_reg_cache(codec, AK4535_PM1);
399 ak4535_write(codec, AK4535_PM1, i & (~0x80));
400 break;
401 }
402 codec->bias_level = level;
403 return 0;
404}
405
406#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
407 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
408 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
409
Eric Miao6335d052009-03-03 09:41:00 +0800410static struct snd_soc_dai_ops ak4535_dai_ops = {
411 .hw_params = ak4535_hw_params,
412 .set_fmt = ak4535_set_dai_fmt,
413 .digital_mute = ak4535_mute,
414 .set_sysclk = ak4535_set_dai_sysclk,
415};
416
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000417static struct snd_soc_dai_driver ak4535_dai = {
418 .name = "ak4535-hifi",
Richard Purdie796d2ca2008-06-23 14:51:28 +0100419 .playback = {
420 .stream_name = "Playback",
421 .channels_min = 1,
422 .channels_max = 2,
423 .rates = AK4535_RATES,
424 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
425 .capture = {
426 .stream_name = "Capture",
427 .channels_min = 1,
428 .channels_max = 2,
429 .rates = AK4535_RATES,
430 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
Eric Miao6335d052009-03-03 09:41:00 +0800431 .ops = &ak4535_dai_ops,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100432};
Richard Purdie796d2ca2008-06-23 14:51:28 +0100433
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000434static int ak4535_suspend(struct snd_soc_codec *codec, pm_message_t state)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100435{
Richard Purdie796d2ca2008-06-23 14:51:28 +0100436 ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
437 return 0;
438}
439
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000440static int ak4535_resume(struct snd_soc_codec *codec)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100441{
Richard Purdie796d2ca2008-06-23 14:51:28 +0100442 ak4535_sync(codec);
443 ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100444 return 0;
445}
446
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000447static int ak4535_probe(struct snd_soc_codec *codec)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100448{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000449 struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100450
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000451 printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100452
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000453 codec->control_data = ak4535->control_data;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100454
455 /* power on device */
456 ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
457
Ian Molton3e8e1952009-01-09 00:23:21 +0000458 snd_soc_add_controls(codec, ak4535_snd_controls,
459 ARRAY_SIZE(ak4535_snd_controls));
Richard Purdie796d2ca2008-06-23 14:51:28 +0100460 ak4535_add_widgets(codec);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100461
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000462 return 0;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100463}
464
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000465/* power down chip */
466static int ak4535_remove(struct snd_soc_codec *codec)
467{
468 ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
469 return 0;
470}
471
472static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
473 .probe = ak4535_probe,
474 .remove = ak4535_remove,
475 .suspend = ak4535_suspend,
476 .resume = ak4535_resume,
477 .read = ak4535_read_reg_cache,
478 .write = ak4535_write,
479 .set_bias_level = ak4535_set_bias_level,
480 .reg_cache_size = ARRAY_SIZE(ak4535_reg),
481 .reg_word_size = sizeof(u8),
482 .reg_cache_default = ak4535_reg,
483};
Richard Purdie796d2ca2008-06-23 14:51:28 +0100484
485#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000486static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
487 const struct i2c_device_id *id)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100488{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000489 struct ak4535_priv *ak4535;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100490 int ret;
491
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000492 ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
493 if (ak4535 == NULL)
494 return -ENOMEM;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100495
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000496 i2c_set_clientdata(i2c, ak4535);
497 ak4535->control_data = i2c;
498 ak4535->control_type = SND_SOC_I2C;
499
500 ret = snd_soc_register_codec(&i2c->dev,
501 &soc_codec_dev_ak4535, &ak4535_dai, 1);
Jean Delvared28d2712008-09-01 18:46:59 +0100502 if (ret < 0)
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000503 kfree(ak4535);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100504 return ret;
505}
506
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000507static __devexit int ak4535_i2c_remove(struct i2c_client *client)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100508{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000509 snd_soc_unregister_codec(&client->dev);
510 kfree(i2c_get_clientdata(client));
Richard Purdie796d2ca2008-06-23 14:51:28 +0100511 return 0;
512}
513
Jean Delvared28d2712008-09-01 18:46:59 +0100514static const struct i2c_device_id ak4535_i2c_id[] = {
515 { "ak4535", 0 },
516 { }
517};
518MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100519
Richard Purdie796d2ca2008-06-23 14:51:28 +0100520static struct i2c_driver ak4535_i2c_driver = {
521 .driver = {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000522 .name = "ak4535-codec",
Richard Purdie796d2ca2008-06-23 14:51:28 +0100523 .owner = THIS_MODULE,
524 },
Jean Delvared28d2712008-09-01 18:46:59 +0100525 .probe = ak4535_i2c_probe,
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000526 .remove = __devexit_p(ak4535_i2c_remove),
Jean Delvared28d2712008-09-01 18:46:59 +0100527 .id_table = ak4535_i2c_id,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100528};
Richard Purdie796d2ca2008-06-23 14:51:28 +0100529#endif
530
Takashi Iwaic9b3a402008-12-10 07:47:22 +0100531static int __init ak4535_modinit(void)
Mark Brown64089b82008-12-08 19:17:58 +0000532{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000533 int ret = 0;
534#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
535 ret = i2c_add_driver(&ak4535_i2c_driver);
536 if (ret != 0) {
537 printk(KERN_ERR "Failed to register AK4535 I2C driver: %d\n",
538 ret);
539 }
540#endif
541 return ret;
Mark Brown64089b82008-12-08 19:17:58 +0000542}
543module_init(ak4535_modinit);
544
545static void __exit ak4535_exit(void)
546{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000547#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
548 i2c_del_driver(&ak4535_i2c_driver);
549#endif
Mark Brown64089b82008-12-08 19:17:58 +0000550}
551module_exit(ak4535_exit);
552
Richard Purdie796d2ca2008-06-23 14:51:28 +0100553MODULE_DESCRIPTION("Soc AK4535 driver");
554MODULE_AUTHOR("Richard Purdie");
555MODULE_LICENSE("GPL");