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796d2ca8 RP |
1 | /* |
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> | |
5a0e3ad6 | 22 | #include <linux/slab.h> |
796d2ca8 RP |
23 | #include <sound/core.h> |
24 | #include <sound/pcm.h> | |
25 | #include <sound/pcm_params.h> | |
26 | #include <sound/soc.h> | |
27 | #include <sound/soc-dapm.h> | |
28 | #include <sound/initval.h> | |
29 | ||
30 | #include "ak4535.h" | |
31 | ||
796d2ca8 RP |
32 | #define AK4535_VERSION "0.3" |
33 | ||
34 | struct snd_soc_codec_device soc_codec_dev_ak4535; | |
35 | ||
36 | /* codec private data */ | |
37 | struct ak4535_priv { | |
38 | unsigned int sysclk; | |
39 | }; | |
40 | ||
41 | /* | |
42 | * ak4535 register cache | |
43 | */ | |
44 | static 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 | */ | |
54 | static 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 | ||
796d2ca8 RP |
63 | /* |
64 | * write ak4535 register cache | |
65 | */ | |
66 | static 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 | */ | |
78 | static 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 | ||
97 | static 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 | ||
108 | static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"}; | |
109 | static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"}; | |
110 | static const char *ak4535_hp_out[] = {"Stereo", "Mono"}; | |
111 | static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"}; | |
112 | static const char *ak4535_mic_select[] = {"Internal", "External"}; | |
113 | ||
114 | static 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 | ||
122 | static 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 | ||
796d2ca8 RP |
144 | /* Mono 1 Mixer */ |
145 | static 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 */ | |
151 | static 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 */ | |
158 | static 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 */ | |
164 | static const struct snd_kcontrol_new ak4535_input_mux_control = | |
165 | SOC_DAPM_ENUM("Input Select", ak4535_enum[4]); | |
166 | ||
167 | /* HP L switch */ | |
168 | static const struct snd_kcontrol_new ak4535_hpl_control = | |
169 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1); | |
170 | ||
171 | /* HP R switch */ | |
172 | static const struct snd_kcontrol_new ak4535_hpr_control = | |
173 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1); | |
174 | ||
175 | /* mono 2 switch */ | |
176 | static const struct snd_kcontrol_new ak4535_mono2_control = | |
177 | SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0); | |
178 | ||
179 | /* Line out switch */ | |
180 | static const struct snd_kcontrol_new ak4535_line_control = | |
181 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0); | |
182 | ||
183 | /* ak4535 dapm widgets */ | |
184 | static 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 | ||
234 | static 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 | ||
291 | static 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 | ||
796d2ca8 RP |
298 | return 0; |
299 | } | |
300 | ||
e550e17f | 301 | static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
796d2ca8 RP |
302 | int clk_id, unsigned int freq, int dir) |
303 | { | |
304 | struct snd_soc_codec *codec = codec_dai->codec; | |
305 | struct ak4535_priv *ak4535 = codec->private_data; | |
306 | ||
307 | ak4535->sysclk = freq; | |
308 | return 0; | |
309 | } | |
310 | ||
311 | static int ak4535_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
312 | struct snd_pcm_hw_params *params, |
313 | struct snd_soc_dai *dai) | |
796d2ca8 RP |
314 | { |
315 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
316 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 317 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
318 | struct ak4535_priv *ak4535 = codec->private_data; |
319 | u8 mode2 = ak4535_read_reg_cache(codec, AK4535_MODE2) & ~(0x3 << 5); | |
320 | int rate = params_rate(params), fs = 256; | |
321 | ||
322 | if (rate) | |
323 | fs = ak4535->sysclk / rate; | |
324 | ||
325 | /* set fs */ | |
326 | switch (fs) { | |
327 | case 1024: | |
328 | mode2 |= (0x2 << 5); | |
329 | break; | |
330 | case 512: | |
331 | mode2 |= (0x1 << 5); | |
332 | break; | |
333 | case 256: | |
334 | break; | |
335 | } | |
336 | ||
337 | /* set rate */ | |
338 | ak4535_write(codec, AK4535_MODE2, mode2); | |
339 | return 0; | |
340 | } | |
341 | ||
e550e17f | 342 | static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai, |
796d2ca8 RP |
343 | unsigned int fmt) |
344 | { | |
345 | struct snd_soc_codec *codec = codec_dai->codec; | |
346 | u8 mode1 = 0; | |
347 | ||
348 | /* interface format */ | |
349 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
350 | case SND_SOC_DAIFMT_I2S: | |
351 | mode1 = 0x0002; | |
352 | break; | |
353 | case SND_SOC_DAIFMT_LEFT_J: | |
354 | mode1 = 0x0001; | |
355 | break; | |
356 | default: | |
357 | return -EINVAL; | |
358 | } | |
359 | ||
360 | /* use 32 fs for BCLK to save power */ | |
361 | mode1 |= 0x4; | |
362 | ||
363 | ak4535_write(codec, AK4535_MODE1, mode1); | |
364 | return 0; | |
365 | } | |
366 | ||
e550e17f | 367 | static int ak4535_mute(struct snd_soc_dai *dai, int mute) |
796d2ca8 RP |
368 | { |
369 | struct snd_soc_codec *codec = dai->codec; | |
370 | u16 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf; | |
371 | if (!mute) | |
372 | ak4535_write(codec, AK4535_DAC, mute_reg); | |
373 | else | |
374 | ak4535_write(codec, AK4535_DAC, mute_reg | 0x20); | |
375 | return 0; | |
376 | } | |
377 | ||
378 | static int ak4535_set_bias_level(struct snd_soc_codec *codec, | |
379 | enum snd_soc_bias_level level) | |
380 | { | |
381 | u16 i; | |
382 | ||
383 | switch (level) { | |
384 | case SND_SOC_BIAS_ON: | |
385 | ak4535_mute(codec->dai, 0); | |
386 | break; | |
387 | case SND_SOC_BIAS_PREPARE: | |
388 | ak4535_mute(codec->dai, 1); | |
389 | break; | |
390 | case SND_SOC_BIAS_STANDBY: | |
391 | i = ak4535_read_reg_cache(codec, AK4535_PM1); | |
392 | ak4535_write(codec, AK4535_PM1, i | 0x80); | |
393 | i = ak4535_read_reg_cache(codec, AK4535_PM2); | |
394 | ak4535_write(codec, AK4535_PM2, i & (~0x80)); | |
395 | break; | |
396 | case SND_SOC_BIAS_OFF: | |
397 | i = ak4535_read_reg_cache(codec, AK4535_PM1); | |
398 | ak4535_write(codec, AK4535_PM1, i & (~0x80)); | |
399 | break; | |
400 | } | |
401 | codec->bias_level = level; | |
402 | return 0; | |
403 | } | |
404 | ||
405 | #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
406 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
407 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) | |
408 | ||
6335d055 EM |
409 | static struct snd_soc_dai_ops ak4535_dai_ops = { |
410 | .hw_params = ak4535_hw_params, | |
411 | .set_fmt = ak4535_set_dai_fmt, | |
412 | .digital_mute = ak4535_mute, | |
413 | .set_sysclk = ak4535_set_dai_sysclk, | |
414 | }; | |
415 | ||
e550e17f | 416 | struct snd_soc_dai ak4535_dai = { |
796d2ca8 RP |
417 | .name = "AK4535", |
418 | .playback = { | |
419 | .stream_name = "Playback", | |
420 | .channels_min = 1, | |
421 | .channels_max = 2, | |
422 | .rates = AK4535_RATES, | |
423 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
424 | .capture = { | |
425 | .stream_name = "Capture", | |
426 | .channels_min = 1, | |
427 | .channels_max = 2, | |
428 | .rates = AK4535_RATES, | |
429 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
6335d055 | 430 | .ops = &ak4535_dai_ops, |
796d2ca8 RP |
431 | }; |
432 | EXPORT_SYMBOL_GPL(ak4535_dai); | |
433 | ||
434 | static int ak4535_suspend(struct platform_device *pdev, pm_message_t state) | |
435 | { | |
436 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 437 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
438 | |
439 | ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
440 | return 0; | |
441 | } | |
442 | ||
443 | static int ak4535_resume(struct platform_device *pdev) | |
444 | { | |
445 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 446 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
447 | ak4535_sync(codec); |
448 | ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
449 | ak4535_set_bias_level(codec, codec->suspend_bias_level); | |
450 | return 0; | |
451 | } | |
452 | ||
453 | /* | |
454 | * initialise the AK4535 driver | |
455 | * register the mixer and dsp interfaces with the kernel | |
456 | */ | |
457 | static int ak4535_init(struct snd_soc_device *socdev) | |
458 | { | |
6627a653 | 459 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
460 | int ret = 0; |
461 | ||
462 | codec->name = "AK4535"; | |
463 | codec->owner = THIS_MODULE; | |
464 | codec->read = ak4535_read_reg_cache; | |
465 | codec->write = ak4535_write; | |
466 | codec->set_bias_level = ak4535_set_bias_level; | |
467 | codec->dai = &ak4535_dai; | |
468 | codec->num_dai = 1; | |
469 | codec->reg_cache_size = ARRAY_SIZE(ak4535_reg); | |
470 | codec->reg_cache = kmemdup(ak4535_reg, sizeof(ak4535_reg), GFP_KERNEL); | |
471 | ||
472 | if (codec->reg_cache == NULL) | |
473 | return -ENOMEM; | |
474 | ||
475 | /* register pcms */ | |
476 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
477 | if (ret < 0) { | |
478 | printk(KERN_ERR "ak4535: failed to create pcms\n"); | |
479 | goto pcm_err; | |
480 | } | |
481 | ||
482 | /* power on device */ | |
483 | ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
484 | ||
3e8e1952 IM |
485 | snd_soc_add_controls(codec, ak4535_snd_controls, |
486 | ARRAY_SIZE(ak4535_snd_controls)); | |
796d2ca8 | 487 | ak4535_add_widgets(codec); |
796d2ca8 RP |
488 | |
489 | return ret; | |
490 | ||
796d2ca8 RP |
491 | pcm_err: |
492 | kfree(codec->reg_cache); | |
493 | ||
494 | return ret; | |
495 | } | |
496 | ||
497 | static struct snd_soc_device *ak4535_socdev; | |
498 | ||
499 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
500 | ||
d28d2713 JD |
501 | static int ak4535_i2c_probe(struct i2c_client *i2c, |
502 | const struct i2c_device_id *id) | |
796d2ca8 RP |
503 | { |
504 | struct snd_soc_device *socdev = ak4535_socdev; | |
6627a653 | 505 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
506 | int ret; |
507 | ||
796d2ca8 RP |
508 | i2c_set_clientdata(i2c, codec); |
509 | codec->control_data = i2c; | |
510 | ||
796d2ca8 | 511 | ret = ak4535_init(socdev); |
d28d2713 | 512 | if (ret < 0) |
796d2ca8 | 513 | printk(KERN_ERR "failed to initialise AK4535\n"); |
796d2ca8 | 514 | |
796d2ca8 RP |
515 | return ret; |
516 | } | |
517 | ||
d28d2713 | 518 | static int ak4535_i2c_remove(struct i2c_client *client) |
796d2ca8 RP |
519 | { |
520 | struct snd_soc_codec *codec = i2c_get_clientdata(client); | |
796d2ca8 | 521 | kfree(codec->reg_cache); |
796d2ca8 RP |
522 | return 0; |
523 | } | |
524 | ||
d28d2713 JD |
525 | static const struct i2c_device_id ak4535_i2c_id[] = { |
526 | { "ak4535", 0 }, | |
527 | { } | |
528 | }; | |
529 | MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id); | |
796d2ca8 | 530 | |
796d2ca8 RP |
531 | static struct i2c_driver ak4535_i2c_driver = { |
532 | .driver = { | |
533 | .name = "AK4535 I2C Codec", | |
534 | .owner = THIS_MODULE, | |
535 | }, | |
d28d2713 JD |
536 | .probe = ak4535_i2c_probe, |
537 | .remove = ak4535_i2c_remove, | |
538 | .id_table = ak4535_i2c_id, | |
796d2ca8 RP |
539 | }; |
540 | ||
d28d2713 JD |
541 | static int ak4535_add_i2c_device(struct platform_device *pdev, |
542 | const struct ak4535_setup_data *setup) | |
543 | { | |
544 | struct i2c_board_info info; | |
545 | struct i2c_adapter *adapter; | |
546 | struct i2c_client *client; | |
547 | int ret; | |
548 | ||
549 | ret = i2c_add_driver(&ak4535_i2c_driver); | |
550 | if (ret != 0) { | |
551 | dev_err(&pdev->dev, "can't add i2c driver\n"); | |
552 | return ret; | |
553 | } | |
554 | ||
555 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
556 | info.addr = setup->i2c_address; | |
557 | strlcpy(info.type, "ak4535", I2C_NAME_SIZE); | |
558 | ||
559 | adapter = i2c_get_adapter(setup->i2c_bus); | |
560 | if (!adapter) { | |
561 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", | |
562 | setup->i2c_bus); | |
563 | goto err_driver; | |
564 | } | |
565 | ||
566 | client = i2c_new_device(adapter, &info); | |
567 | i2c_put_adapter(adapter); | |
568 | if (!client) { | |
569 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", | |
570 | (unsigned int)info.addr); | |
571 | goto err_driver; | |
572 | } | |
573 | ||
574 | return 0; | |
575 | ||
576 | err_driver: | |
577 | i2c_del_driver(&ak4535_i2c_driver); | |
578 | return -ENODEV; | |
579 | } | |
796d2ca8 RP |
580 | #endif |
581 | ||
582 | static int ak4535_probe(struct platform_device *pdev) | |
583 | { | |
584 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
585 | struct ak4535_setup_data *setup; | |
586 | struct snd_soc_codec *codec; | |
587 | struct ak4535_priv *ak4535; | |
b7c9d852 | 588 | int ret; |
796d2ca8 RP |
589 | |
590 | printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION); | |
591 | ||
592 | setup = socdev->codec_data; | |
593 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
594 | if (codec == NULL) | |
595 | return -ENOMEM; | |
596 | ||
597 | ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL); | |
598 | if (ak4535 == NULL) { | |
599 | kfree(codec); | |
600 | return -ENOMEM; | |
601 | } | |
602 | ||
603 | codec->private_data = ak4535; | |
6627a653 | 604 | socdev->card->codec = codec; |
796d2ca8 RP |
605 | mutex_init(&codec->mutex); |
606 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
607 | INIT_LIST_HEAD(&codec->dapm_paths); | |
608 | ||
609 | ak4535_socdev = socdev; | |
b7c9d852 MB |
610 | ret = -ENODEV; |
611 | ||
796d2ca8 RP |
612 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
613 | if (setup->i2c_address) { | |
796d2ca8 | 614 | codec->hw_write = (hw_write_t)i2c_master_send; |
d28d2713 | 615 | ret = ak4535_add_i2c_device(pdev, setup); |
796d2ca8 | 616 | } |
796d2ca8 | 617 | #endif |
3051e41a JD |
618 | |
619 | if (ret != 0) { | |
620 | kfree(codec->private_data); | |
621 | kfree(codec); | |
622 | } | |
796d2ca8 RP |
623 | return ret; |
624 | } | |
625 | ||
626 | /* power down chip */ | |
627 | static int ak4535_remove(struct platform_device *pdev) | |
628 | { | |
629 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 630 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
631 | |
632 | if (codec->control_data) | |
633 | ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
634 | ||
635 | snd_soc_free_pcms(socdev); | |
636 | snd_soc_dapm_free(socdev); | |
637 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
09318c47 DC |
638 | if (codec->control_data) |
639 | i2c_unregister_device(codec->control_data); | |
796d2ca8 RP |
640 | i2c_del_driver(&ak4535_i2c_driver); |
641 | #endif | |
642 | kfree(codec->private_data); | |
643 | kfree(codec); | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
648 | struct snd_soc_codec_device soc_codec_dev_ak4535 = { | |
649 | .probe = ak4535_probe, | |
650 | .remove = ak4535_remove, | |
651 | .suspend = ak4535_suspend, | |
652 | .resume = ak4535_resume, | |
653 | }; | |
654 | EXPORT_SYMBOL_GPL(soc_codec_dev_ak4535); | |
655 | ||
c9b3a40f | 656 | static int __init ak4535_modinit(void) |
64089b84 MB |
657 | { |
658 | return snd_soc_register_dai(&ak4535_dai); | |
659 | } | |
660 | module_init(ak4535_modinit); | |
661 | ||
662 | static void __exit ak4535_exit(void) | |
663 | { | |
664 | snd_soc_unregister_dai(&ak4535_dai); | |
665 | } | |
666 | module_exit(ak4535_exit); | |
667 | ||
796d2ca8 RP |
668 | MODULE_DESCRIPTION("Soc AK4535 driver"); |
669 | MODULE_AUTHOR("Richard Purdie"); | |
670 | MODULE_LICENSE("GPL"); |