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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>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/soc-dapm.h>
27#include <sound/initval.h>
28
29#include "ak4535.h"
30
Richard Purdie796d2ca2008-06-23 14:51:28 +010031#define AK4535_VERSION "0.3"
32
33struct snd_soc_codec_device soc_codec_dev_ak4535;
34
35/* codec private data */
36struct ak4535_priv {
37 unsigned int sysclk;
38};
39
40/*
41 * ak4535 register cache
42 */
43static const u16 ak4535_reg[AK4535_CACHEREGNUM] = {
44 0x0000, 0x0080, 0x0000, 0x0003,
45 0x0002, 0x0000, 0x0011, 0x0001,
46 0x0000, 0x0040, 0x0036, 0x0010,
47 0x0000, 0x0000, 0x0057, 0x0000,
48};
49
50/*
51 * read ak4535 register cache
52 */
53static inline unsigned int ak4535_read_reg_cache(struct snd_soc_codec *codec,
54 unsigned int reg)
55{
56 u16 *cache = codec->reg_cache;
57 if (reg >= AK4535_CACHEREGNUM)
58 return -1;
59 return cache[reg];
60}
61
62static inline unsigned int ak4535_read(struct snd_soc_codec *codec,
63 unsigned int reg)
64{
65 u8 data;
66 data = reg;
67
68 if (codec->hw_write(codec->control_data, &data, 1) != 1)
69 return -EIO;
70
71 if (codec->hw_read(codec->control_data, &data, 1) != 1)
72 return -EIO;
73
74 return data;
75};
76
77/*
78 * write ak4535 register cache
79 */
80static inline void ak4535_write_reg_cache(struct snd_soc_codec *codec,
81 u16 reg, unsigned int value)
82{
83 u16 *cache = codec->reg_cache;
84 if (reg >= AK4535_CACHEREGNUM)
85 return;
86 cache[reg] = value;
87}
88
89/*
90 * write to the AK4535 register space
91 */
92static int ak4535_write(struct snd_soc_codec *codec, unsigned int reg,
93 unsigned int value)
94{
95 u8 data[2];
96
97 /* data is
98 * D15..D8 AK4535 register offset
99 * D7...D0 register data
100 */
101 data[0] = reg & 0xff;
102 data[1] = value & 0xff;
103
104 ak4535_write_reg_cache(codec, reg, value);
105 if (codec->hw_write(codec->control_data, data, 2) == 2)
106 return 0;
107 else
108 return -EIO;
109}
110
111static int ak4535_sync(struct snd_soc_codec *codec)
112{
113 u16 *cache = codec->reg_cache;
114 int i, r = 0;
115
116 for (i = 0; i < AK4535_CACHEREGNUM; i++)
117 r |= ak4535_write(codec, i, cache[i]);
118
119 return r;
120};
121
122static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
123static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
124static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
125static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
126static const char *ak4535_mic_select[] = {"Internal", "External"};
127
128static const struct soc_enum ak4535_enum[] = {
129 SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
130 SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
131 SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
132 SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
133 SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
134};
135
136static const struct snd_kcontrol_new ak4535_snd_controls[] = {
137 SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
138 SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
139 SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
140 SOC_ENUM("Headphone Output", ak4535_enum[2]),
141 SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
142 SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
143 SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
144 SOC_ENUM("Mic Select", ak4535_enum[4]),
145 SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
146 SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
147 SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
148 SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
149 SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
150 SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
151 SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
152 SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
153 SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
154 SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
155 SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
156};
157
Richard Purdie796d2ca2008-06-23 14:51:28 +0100158/* Mono 1 Mixer */
159static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
160 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
161 SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
162};
163
164/* Stereo Mixer */
165static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
166 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
167 SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
168 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
169};
170
171/* Input Mixer */
172static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
173 SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
174 SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
175};
176
177/* Input mux */
178static const struct snd_kcontrol_new ak4535_input_mux_control =
179 SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
180
181/* HP L switch */
182static const struct snd_kcontrol_new ak4535_hpl_control =
183 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
184
185/* HP R switch */
186static const struct snd_kcontrol_new ak4535_hpr_control =
187 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
188
189/* mono 2 switch */
190static const struct snd_kcontrol_new ak4535_mono2_control =
191 SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
192
193/* Line out switch */
194static const struct snd_kcontrol_new ak4535_line_control =
195 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
196
197/* ak4535 dapm widgets */
198static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
199 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
200 &ak4535_stereo_mixer_controls[0],
201 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
202 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
203 &ak4535_mono1_mixer_controls[0],
204 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
205 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
206 &ak4535_input_mixer_controls[0],
207 ARRAY_SIZE(ak4535_input_mixer_controls)),
208 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
209 &ak4535_input_mux_control),
210 SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
211 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
212 &ak4535_mono2_control),
213 /* speaker powersave bit */
214 SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
215 SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
216 &ak4535_line_control),
217 SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
218 &ak4535_hpl_control),
219 SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
220 &ak4535_hpr_control),
221 SND_SOC_DAPM_OUTPUT("LOUT"),
222 SND_SOC_DAPM_OUTPUT("HPL"),
223 SND_SOC_DAPM_OUTPUT("ROUT"),
224 SND_SOC_DAPM_OUTPUT("HPR"),
225 SND_SOC_DAPM_OUTPUT("SPP"),
226 SND_SOC_DAPM_OUTPUT("SPN"),
227 SND_SOC_DAPM_OUTPUT("MOUT1"),
228 SND_SOC_DAPM_OUTPUT("MOUT2"),
229 SND_SOC_DAPM_OUTPUT("MICOUT"),
230 SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
231 SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
232 SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
233 SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
234 SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
235 SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
236 SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
237 SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
238
239 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
240 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
241 SND_SOC_DAPM_INPUT("MICIN"),
242 SND_SOC_DAPM_INPUT("MICEXT"),
243 SND_SOC_DAPM_INPUT("AUX"),
244 SND_SOC_DAPM_INPUT("MIN"),
245 SND_SOC_DAPM_INPUT("AIN"),
246};
247
248static const struct snd_soc_dapm_route audio_map[] = {
249 /*stereo mixer */
250 {"Stereo Mixer", "Playback Switch", "DAC"},
251 {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
252 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
253
254 /* mono1 mixer */
255 {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
256 {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
257
258 /* Mic */
259 {"Mic", NULL, "AIN"},
260 {"Input Mux", "Internal", "Mic Int Bias"},
261 {"Input Mux", "External", "Mic Ext Bias"},
262 {"Mic Int Bias", NULL, "MICIN"},
263 {"Mic Ext Bias", NULL, "MICEXT"},
264 {"MICOUT", NULL, "Input Mux"},
265
266 /* line out */
267 {"LOUT", NULL, "Line Out Enable"},
268 {"ROUT", NULL, "Line Out Enable"},
269 {"Line Out Enable", "Switch", "Line Out"},
270 {"Line Out", NULL, "Stereo Mixer"},
271
272 /* mono1 out */
273 {"MOUT1", NULL, "Mono Out"},
274 {"Mono Out", NULL, "Mono1 Mixer"},
275
276 /* left HP */
277 {"HPL", NULL, "Left HP Enable"},
278 {"Left HP Enable", "Switch", "HP L Amp"},
279 {"HP L Amp", NULL, "Stereo Mixer"},
280
281 /* right HP */
282 {"HPR", NULL, "Right HP Enable"},
283 {"Right HP Enable", "Switch", "HP R Amp"},
284 {"HP R Amp", NULL, "Stereo Mixer"},
285
286 /* speaker */
287 {"SPP", NULL, "Speaker Enable"},
288 {"SPN", NULL, "Speaker Enable"},
289 {"Speaker Enable", "Switch", "Spk Amp"},
290 {"Spk Amp", NULL, "MIN"},
291
292 /* mono 2 */
293 {"MOUT2", NULL, "Mono 2 Enable"},
294 {"Mono 2 Enable", "Switch", "Stereo Mixer"},
295
296 /* Aux In */
297 {"Aux In", NULL, "AUX"},
298
299 /* ADC */
300 {"ADC", NULL, "Input Mixer"},
301 {"Input Mixer", "Mic Capture Switch", "Mic"},
302 {"Input Mixer", "Aux Capture Switch", "Aux In"},
303};
304
305static int ak4535_add_widgets(struct snd_soc_codec *codec)
306{
307 snd_soc_dapm_new_controls(codec, ak4535_dapm_widgets,
308 ARRAY_SIZE(ak4535_dapm_widgets));
309
310 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
311
312 snd_soc_dapm_new_widgets(codec);
313 return 0;
314}
315
Liam Girdwoode550e172008-07-07 16:07:52 +0100316static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100317 int clk_id, unsigned int freq, int dir)
318{
319 struct snd_soc_codec *codec = codec_dai->codec;
320 struct ak4535_priv *ak4535 = codec->private_data;
321
322 ak4535->sysclk = freq;
323 return 0;
324}
325
326static int ak4535_hw_params(struct snd_pcm_substream *substream,
Mark Browndee89c42008-11-18 22:11:38 +0000327 struct snd_pcm_hw_params *params,
328 struct snd_soc_dai *dai)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100329{
330 struct snd_soc_pcm_runtime *rtd = substream->private_data;
331 struct snd_soc_device *socdev = rtd->socdev;
332 struct snd_soc_codec *codec = socdev->codec;
333 struct ak4535_priv *ak4535 = codec->private_data;
334 u8 mode2 = ak4535_read_reg_cache(codec, AK4535_MODE2) & ~(0x3 << 5);
335 int rate = params_rate(params), fs = 256;
336
337 if (rate)
338 fs = ak4535->sysclk / rate;
339
340 /* set fs */
341 switch (fs) {
342 case 1024:
343 mode2 |= (0x2 << 5);
344 break;
345 case 512:
346 mode2 |= (0x1 << 5);
347 break;
348 case 256:
349 break;
350 }
351
352 /* set rate */
353 ak4535_write(codec, AK4535_MODE2, mode2);
354 return 0;
355}
356
Liam Girdwoode550e172008-07-07 16:07:52 +0100357static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100358 unsigned int fmt)
359{
360 struct snd_soc_codec *codec = codec_dai->codec;
361 u8 mode1 = 0;
362
363 /* interface format */
364 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
365 case SND_SOC_DAIFMT_I2S:
366 mode1 = 0x0002;
367 break;
368 case SND_SOC_DAIFMT_LEFT_J:
369 mode1 = 0x0001;
370 break;
371 default:
372 return -EINVAL;
373 }
374
375 /* use 32 fs for BCLK to save power */
376 mode1 |= 0x4;
377
378 ak4535_write(codec, AK4535_MODE1, mode1);
379 return 0;
380}
381
Liam Girdwoode550e172008-07-07 16:07:52 +0100382static int ak4535_mute(struct snd_soc_dai *dai, int mute)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100383{
384 struct snd_soc_codec *codec = dai->codec;
385 u16 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf;
386 if (!mute)
387 ak4535_write(codec, AK4535_DAC, mute_reg);
388 else
389 ak4535_write(codec, AK4535_DAC, mute_reg | 0x20);
390 return 0;
391}
392
393static int ak4535_set_bias_level(struct snd_soc_codec *codec,
394 enum snd_soc_bias_level level)
395{
396 u16 i;
397
398 switch (level) {
399 case SND_SOC_BIAS_ON:
400 ak4535_mute(codec->dai, 0);
401 break;
402 case SND_SOC_BIAS_PREPARE:
403 ak4535_mute(codec->dai, 1);
404 break;
405 case SND_SOC_BIAS_STANDBY:
406 i = ak4535_read_reg_cache(codec, AK4535_PM1);
407 ak4535_write(codec, AK4535_PM1, i | 0x80);
408 i = ak4535_read_reg_cache(codec, AK4535_PM2);
409 ak4535_write(codec, AK4535_PM2, i & (~0x80));
410 break;
411 case SND_SOC_BIAS_OFF:
412 i = ak4535_read_reg_cache(codec, AK4535_PM1);
413 ak4535_write(codec, AK4535_PM1, i & (~0x80));
414 break;
415 }
416 codec->bias_level = level;
417 return 0;
418}
419
420#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
421 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
422 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
423
Liam Girdwoode550e172008-07-07 16:07:52 +0100424struct snd_soc_dai ak4535_dai = {
Richard Purdie796d2ca2008-06-23 14:51:28 +0100425 .name = "AK4535",
426 .playback = {
427 .stream_name = "Playback",
428 .channels_min = 1,
429 .channels_max = 2,
430 .rates = AK4535_RATES,
431 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
432 .capture = {
433 .stream_name = "Capture",
434 .channels_min = 1,
435 .channels_max = 2,
436 .rates = AK4535_RATES,
437 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
438 .ops = {
439 .hw_params = ak4535_hw_params,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100440 .set_fmt = ak4535_set_dai_fmt,
441 .digital_mute = ak4535_mute,
442 .set_sysclk = ak4535_set_dai_sysclk,
443 },
444};
445EXPORT_SYMBOL_GPL(ak4535_dai);
446
447static int ak4535_suspend(struct platform_device *pdev, pm_message_t state)
448{
449 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
450 struct snd_soc_codec *codec = socdev->codec;
451
452 ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
453 return 0;
454}
455
456static int ak4535_resume(struct platform_device *pdev)
457{
458 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
459 struct snd_soc_codec *codec = socdev->codec;
460 ak4535_sync(codec);
461 ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
462 ak4535_set_bias_level(codec, codec->suspend_bias_level);
463 return 0;
464}
465
466/*
467 * initialise the AK4535 driver
468 * register the mixer and dsp interfaces with the kernel
469 */
470static int ak4535_init(struct snd_soc_device *socdev)
471{
472 struct snd_soc_codec *codec = socdev->codec;
473 int ret = 0;
474
475 codec->name = "AK4535";
476 codec->owner = THIS_MODULE;
477 codec->read = ak4535_read_reg_cache;
478 codec->write = ak4535_write;
479 codec->set_bias_level = ak4535_set_bias_level;
480 codec->dai = &ak4535_dai;
481 codec->num_dai = 1;
482 codec->reg_cache_size = ARRAY_SIZE(ak4535_reg);
483 codec->reg_cache = kmemdup(ak4535_reg, sizeof(ak4535_reg), GFP_KERNEL);
484
485 if (codec->reg_cache == NULL)
486 return -ENOMEM;
487
488 /* register pcms */
489 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
490 if (ret < 0) {
491 printk(KERN_ERR "ak4535: failed to create pcms\n");
492 goto pcm_err;
493 }
494
495 /* power on device */
496 ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
497
Ian Molton3e8e1952009-01-09 00:23:21 +0000498 snd_soc_add_controls(codec, ak4535_snd_controls,
499 ARRAY_SIZE(ak4535_snd_controls));
Richard Purdie796d2ca2008-06-23 14:51:28 +0100500 ak4535_add_widgets(codec);
Mark Brown968a6022008-11-28 11:49:07 +0000501 ret = snd_soc_init_card(socdev);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100502 if (ret < 0) {
503 printk(KERN_ERR "ak4535: failed to register card\n");
504 goto card_err;
505 }
506
507 return ret;
508
509card_err:
510 snd_soc_free_pcms(socdev);
511 snd_soc_dapm_free(socdev);
512pcm_err:
513 kfree(codec->reg_cache);
514
515 return ret;
516}
517
518static struct snd_soc_device *ak4535_socdev;
519
520#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
521
Jean Delvared28d2712008-09-01 18:46:59 +0100522static int ak4535_i2c_probe(struct i2c_client *i2c,
523 const struct i2c_device_id *id)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100524{
525 struct snd_soc_device *socdev = ak4535_socdev;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100526 struct snd_soc_codec *codec = socdev->codec;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100527 int ret;
528
Richard Purdie796d2ca2008-06-23 14:51:28 +0100529 i2c_set_clientdata(i2c, codec);
530 codec->control_data = i2c;
531
Richard Purdie796d2ca2008-06-23 14:51:28 +0100532 ret = ak4535_init(socdev);
Jean Delvared28d2712008-09-01 18:46:59 +0100533 if (ret < 0)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100534 printk(KERN_ERR "failed to initialise AK4535\n");
Richard Purdie796d2ca2008-06-23 14:51:28 +0100535
Richard Purdie796d2ca2008-06-23 14:51:28 +0100536 return ret;
537}
538
Jean Delvared28d2712008-09-01 18:46:59 +0100539static int ak4535_i2c_remove(struct i2c_client *client)
Richard Purdie796d2ca2008-06-23 14:51:28 +0100540{
541 struct snd_soc_codec *codec = i2c_get_clientdata(client);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100542 kfree(codec->reg_cache);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100543 return 0;
544}
545
Jean Delvared28d2712008-09-01 18:46:59 +0100546static const struct i2c_device_id ak4535_i2c_id[] = {
547 { "ak4535", 0 },
548 { }
549};
550MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100551
Richard Purdie796d2ca2008-06-23 14:51:28 +0100552static struct i2c_driver ak4535_i2c_driver = {
553 .driver = {
554 .name = "AK4535 I2C Codec",
555 .owner = THIS_MODULE,
556 },
Jean Delvared28d2712008-09-01 18:46:59 +0100557 .probe = ak4535_i2c_probe,
558 .remove = ak4535_i2c_remove,
559 .id_table = ak4535_i2c_id,
Richard Purdie796d2ca2008-06-23 14:51:28 +0100560};
561
Jean Delvared28d2712008-09-01 18:46:59 +0100562static int ak4535_add_i2c_device(struct platform_device *pdev,
563 const struct ak4535_setup_data *setup)
564{
565 struct i2c_board_info info;
566 struct i2c_adapter *adapter;
567 struct i2c_client *client;
568 int ret;
569
570 ret = i2c_add_driver(&ak4535_i2c_driver);
571 if (ret != 0) {
572 dev_err(&pdev->dev, "can't add i2c driver\n");
573 return ret;
574 }
575
576 memset(&info, 0, sizeof(struct i2c_board_info));
577 info.addr = setup->i2c_address;
578 strlcpy(info.type, "ak4535", I2C_NAME_SIZE);
579
580 adapter = i2c_get_adapter(setup->i2c_bus);
581 if (!adapter) {
582 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
583 setup->i2c_bus);
584 goto err_driver;
585 }
586
587 client = i2c_new_device(adapter, &info);
588 i2c_put_adapter(adapter);
589 if (!client) {
590 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
591 (unsigned int)info.addr);
592 goto err_driver;
593 }
594
595 return 0;
596
597err_driver:
598 i2c_del_driver(&ak4535_i2c_driver);
599 return -ENODEV;
600}
Richard Purdie796d2ca2008-06-23 14:51:28 +0100601#endif
602
603static int ak4535_probe(struct platform_device *pdev)
604{
605 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
606 struct ak4535_setup_data *setup;
607 struct snd_soc_codec *codec;
608 struct ak4535_priv *ak4535;
Mark Brownb7c9d852008-09-01 18:47:04 +0100609 int ret;
Richard Purdie796d2ca2008-06-23 14:51:28 +0100610
611 printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
612
613 setup = socdev->codec_data;
614 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
615 if (codec == NULL)
616 return -ENOMEM;
617
618 ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
619 if (ak4535 == NULL) {
620 kfree(codec);
621 return -ENOMEM;
622 }
623
624 codec->private_data = ak4535;
625 socdev->codec = codec;
626 mutex_init(&codec->mutex);
627 INIT_LIST_HEAD(&codec->dapm_widgets);
628 INIT_LIST_HEAD(&codec->dapm_paths);
629
630 ak4535_socdev = socdev;
Mark Brownb7c9d852008-09-01 18:47:04 +0100631 ret = -ENODEV;
632
Richard Purdie796d2ca2008-06-23 14:51:28 +0100633#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
634 if (setup->i2c_address) {
Richard Purdie796d2ca2008-06-23 14:51:28 +0100635 codec->hw_write = (hw_write_t)i2c_master_send;
636 codec->hw_read = (hw_read_t)i2c_master_recv;
Jean Delvared28d2712008-09-01 18:46:59 +0100637 ret = ak4535_add_i2c_device(pdev, setup);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100638 }
Richard Purdie796d2ca2008-06-23 14:51:28 +0100639#endif
Jean Delvare3051e412008-08-25 11:49:20 +0100640
641 if (ret != 0) {
642 kfree(codec->private_data);
643 kfree(codec);
644 }
Richard Purdie796d2ca2008-06-23 14:51:28 +0100645 return ret;
646}
647
648/* power down chip */
649static int ak4535_remove(struct platform_device *pdev)
650{
651 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
652 struct snd_soc_codec *codec = socdev->codec;
653
654 if (codec->control_data)
655 ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
656
657 snd_soc_free_pcms(socdev);
658 snd_soc_dapm_free(socdev);
659#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
Jean Delvared28d2712008-09-01 18:46:59 +0100660 i2c_unregister_device(codec->control_data);
Richard Purdie796d2ca2008-06-23 14:51:28 +0100661 i2c_del_driver(&ak4535_i2c_driver);
662#endif
663 kfree(codec->private_data);
664 kfree(codec);
665
666 return 0;
667}
668
669struct snd_soc_codec_device soc_codec_dev_ak4535 = {
670 .probe = ak4535_probe,
671 .remove = ak4535_remove,
672 .suspend = ak4535_suspend,
673 .resume = ak4535_resume,
674};
675EXPORT_SYMBOL_GPL(soc_codec_dev_ak4535);
676
Takashi Iwaic9b3a402008-12-10 07:47:22 +0100677static int __init ak4535_modinit(void)
Mark Brown64089b82008-12-08 19:17:58 +0000678{
679 return snd_soc_register_dai(&ak4535_dai);
680}
681module_init(ak4535_modinit);
682
683static void __exit ak4535_exit(void)
684{
685 snd_soc_unregister_dai(&ak4535_dai);
686}
687module_exit(ak4535_exit);
688
Richard Purdie796d2ca2008-06-23 14:51:28 +0100689MODULE_DESCRIPTION("Soc AK4535 driver");
690MODULE_AUTHOR("Richard Purdie");
691MODULE_LICENSE("GPL");