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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> | |
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 | ||
796d2ca8 RP |
31 | #define AK4535_VERSION "0.3" |
32 | ||
33 | struct snd_soc_codec_device soc_codec_dev_ak4535; | |
34 | ||
35 | /* codec private data */ | |
36 | struct ak4535_priv { | |
37 | unsigned int sysclk; | |
38 | }; | |
39 | ||
40 | /* | |
41 | * ak4535 register cache | |
42 | */ | |
43 | static 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 | */ | |
53 | static 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 | ||
796d2ca8 RP |
62 | /* |
63 | * write ak4535 register cache | |
64 | */ | |
65 | static inline void ak4535_write_reg_cache(struct snd_soc_codec *codec, | |
66 | u16 reg, unsigned int value) | |
67 | { | |
68 | u16 *cache = codec->reg_cache; | |
69 | if (reg >= AK4535_CACHEREGNUM) | |
70 | return; | |
71 | cache[reg] = value; | |
72 | } | |
73 | ||
74 | /* | |
75 | * write to the AK4535 register space | |
76 | */ | |
77 | static int ak4535_write(struct snd_soc_codec *codec, unsigned int reg, | |
78 | unsigned int value) | |
79 | { | |
80 | u8 data[2]; | |
81 | ||
82 | /* data is | |
83 | * D15..D8 AK4535 register offset | |
84 | * D7...D0 register data | |
85 | */ | |
86 | data[0] = reg & 0xff; | |
87 | data[1] = value & 0xff; | |
88 | ||
89 | ak4535_write_reg_cache(codec, reg, value); | |
90 | if (codec->hw_write(codec->control_data, data, 2) == 2) | |
91 | return 0; | |
92 | else | |
93 | return -EIO; | |
94 | } | |
95 | ||
96 | static int ak4535_sync(struct snd_soc_codec *codec) | |
97 | { | |
98 | u16 *cache = codec->reg_cache; | |
99 | int i, r = 0; | |
100 | ||
101 | for (i = 0; i < AK4535_CACHEREGNUM; i++) | |
102 | r |= ak4535_write(codec, i, cache[i]); | |
103 | ||
104 | return r; | |
105 | }; | |
106 | ||
107 | static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"}; | |
108 | static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"}; | |
109 | static const char *ak4535_hp_out[] = {"Stereo", "Mono"}; | |
110 | static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"}; | |
111 | static const char *ak4535_mic_select[] = {"Internal", "External"}; | |
112 | ||
113 | static const struct soc_enum ak4535_enum[] = { | |
114 | SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain), | |
115 | SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out), | |
116 | SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out), | |
117 | SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp), | |
118 | SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select), | |
119 | }; | |
120 | ||
121 | static const struct snd_kcontrol_new ak4535_snd_controls[] = { | |
122 | SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0), | |
123 | SOC_ENUM("Mono 1 Output", ak4535_enum[1]), | |
124 | SOC_ENUM("Mono 1 Gain", ak4535_enum[0]), | |
125 | SOC_ENUM("Headphone Output", ak4535_enum[2]), | |
126 | SOC_ENUM("Playback Deemphasis", ak4535_enum[3]), | |
127 | SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0), | |
128 | SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0), | |
129 | SOC_ENUM("Mic Select", ak4535_enum[4]), | |
130 | SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0), | |
131 | SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0), | |
132 | SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0), | |
133 | SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0), | |
134 | SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0), | |
135 | SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0), | |
136 | SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0), | |
137 | SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1), | |
138 | SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1), | |
139 | SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0), | |
140 | SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0), | |
141 | }; | |
142 | ||
796d2ca8 RP |
143 | /* Mono 1 Mixer */ |
144 | static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = { | |
145 | SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0), | |
146 | SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0), | |
147 | }; | |
148 | ||
149 | /* Stereo Mixer */ | |
150 | static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = { | |
151 | SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0), | |
152 | SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0), | |
153 | SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0), | |
154 | }; | |
155 | ||
156 | /* Input Mixer */ | |
157 | static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = { | |
158 | SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0), | |
159 | SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0), | |
160 | }; | |
161 | ||
162 | /* Input mux */ | |
163 | static const struct snd_kcontrol_new ak4535_input_mux_control = | |
164 | SOC_DAPM_ENUM("Input Select", ak4535_enum[4]); | |
165 | ||
166 | /* HP L switch */ | |
167 | static const struct snd_kcontrol_new ak4535_hpl_control = | |
168 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1); | |
169 | ||
170 | /* HP R switch */ | |
171 | static const struct snd_kcontrol_new ak4535_hpr_control = | |
172 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1); | |
173 | ||
174 | /* mono 2 switch */ | |
175 | static const struct snd_kcontrol_new ak4535_mono2_control = | |
176 | SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0); | |
177 | ||
178 | /* Line out switch */ | |
179 | static const struct snd_kcontrol_new ak4535_line_control = | |
180 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0); | |
181 | ||
182 | /* ak4535 dapm widgets */ | |
183 | static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = { | |
184 | SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0, | |
185 | &ak4535_stereo_mixer_controls[0], | |
186 | ARRAY_SIZE(ak4535_stereo_mixer_controls)), | |
187 | SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0, | |
188 | &ak4535_mono1_mixer_controls[0], | |
189 | ARRAY_SIZE(ak4535_mono1_mixer_controls)), | |
190 | SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, | |
191 | &ak4535_input_mixer_controls[0], | |
192 | ARRAY_SIZE(ak4535_input_mixer_controls)), | |
193 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, | |
194 | &ak4535_input_mux_control), | |
195 | SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0), | |
196 | SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0, | |
197 | &ak4535_mono2_control), | |
198 | /* speaker powersave bit */ | |
199 | SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0), | |
200 | SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0, | |
201 | &ak4535_line_control), | |
202 | SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0, | |
203 | &ak4535_hpl_control), | |
204 | SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0, | |
205 | &ak4535_hpr_control), | |
206 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
207 | SND_SOC_DAPM_OUTPUT("HPL"), | |
208 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
209 | SND_SOC_DAPM_OUTPUT("HPR"), | |
210 | SND_SOC_DAPM_OUTPUT("SPP"), | |
211 | SND_SOC_DAPM_OUTPUT("SPN"), | |
212 | SND_SOC_DAPM_OUTPUT("MOUT1"), | |
213 | SND_SOC_DAPM_OUTPUT("MOUT2"), | |
214 | SND_SOC_DAPM_OUTPUT("MICOUT"), | |
215 | SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0), | |
216 | SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0), | |
217 | SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0), | |
218 | SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0), | |
219 | SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0), | |
220 | SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0), | |
221 | SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0), | |
222 | SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0), | |
223 | ||
224 | SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0), | |
225 | SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0), | |
226 | SND_SOC_DAPM_INPUT("MICIN"), | |
227 | SND_SOC_DAPM_INPUT("MICEXT"), | |
228 | SND_SOC_DAPM_INPUT("AUX"), | |
229 | SND_SOC_DAPM_INPUT("MIN"), | |
230 | SND_SOC_DAPM_INPUT("AIN"), | |
231 | }; | |
232 | ||
233 | static const struct snd_soc_dapm_route audio_map[] = { | |
234 | /*stereo mixer */ | |
235 | {"Stereo Mixer", "Playback Switch", "DAC"}, | |
236 | {"Stereo Mixer", "Mic Sidetone Switch", "Mic"}, | |
237 | {"Stereo Mixer", "Aux Bypass Switch", "AUX In"}, | |
238 | ||
239 | /* mono1 mixer */ | |
240 | {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"}, | |
241 | {"Mono1 Mixer", "Mono Playback Switch", "DAC"}, | |
242 | ||
243 | /* Mic */ | |
244 | {"Mic", NULL, "AIN"}, | |
245 | {"Input Mux", "Internal", "Mic Int Bias"}, | |
246 | {"Input Mux", "External", "Mic Ext Bias"}, | |
247 | {"Mic Int Bias", NULL, "MICIN"}, | |
248 | {"Mic Ext Bias", NULL, "MICEXT"}, | |
249 | {"MICOUT", NULL, "Input Mux"}, | |
250 | ||
251 | /* line out */ | |
252 | {"LOUT", NULL, "Line Out Enable"}, | |
253 | {"ROUT", NULL, "Line Out Enable"}, | |
254 | {"Line Out Enable", "Switch", "Line Out"}, | |
255 | {"Line Out", NULL, "Stereo Mixer"}, | |
256 | ||
257 | /* mono1 out */ | |
258 | {"MOUT1", NULL, "Mono Out"}, | |
259 | {"Mono Out", NULL, "Mono1 Mixer"}, | |
260 | ||
261 | /* left HP */ | |
262 | {"HPL", NULL, "Left HP Enable"}, | |
263 | {"Left HP Enable", "Switch", "HP L Amp"}, | |
264 | {"HP L Amp", NULL, "Stereo Mixer"}, | |
265 | ||
266 | /* right HP */ | |
267 | {"HPR", NULL, "Right HP Enable"}, | |
268 | {"Right HP Enable", "Switch", "HP R Amp"}, | |
269 | {"HP R Amp", NULL, "Stereo Mixer"}, | |
270 | ||
271 | /* speaker */ | |
272 | {"SPP", NULL, "Speaker Enable"}, | |
273 | {"SPN", NULL, "Speaker Enable"}, | |
274 | {"Speaker Enable", "Switch", "Spk Amp"}, | |
275 | {"Spk Amp", NULL, "MIN"}, | |
276 | ||
277 | /* mono 2 */ | |
278 | {"MOUT2", NULL, "Mono 2 Enable"}, | |
279 | {"Mono 2 Enable", "Switch", "Stereo Mixer"}, | |
280 | ||
281 | /* Aux In */ | |
282 | {"Aux In", NULL, "AUX"}, | |
283 | ||
284 | /* ADC */ | |
285 | {"ADC", NULL, "Input Mixer"}, | |
286 | {"Input Mixer", "Mic Capture Switch", "Mic"}, | |
287 | {"Input Mixer", "Aux Capture Switch", "Aux In"}, | |
288 | }; | |
289 | ||
290 | static int ak4535_add_widgets(struct snd_soc_codec *codec) | |
291 | { | |
292 | snd_soc_dapm_new_controls(codec, ak4535_dapm_widgets, | |
293 | ARRAY_SIZE(ak4535_dapm_widgets)); | |
294 | ||
295 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
296 | ||
796d2ca8 RP |
297 | return 0; |
298 | } | |
299 | ||
e550e17f | 300 | static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
796d2ca8 RP |
301 | int clk_id, unsigned int freq, int dir) |
302 | { | |
303 | struct snd_soc_codec *codec = codec_dai->codec; | |
304 | struct ak4535_priv *ak4535 = codec->private_data; | |
305 | ||
306 | ak4535->sysclk = freq; | |
307 | return 0; | |
308 | } | |
309 | ||
310 | static int ak4535_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
311 | struct snd_pcm_hw_params *params, |
312 | struct snd_soc_dai *dai) | |
796d2ca8 RP |
313 | { |
314 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
315 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 316 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
317 | struct ak4535_priv *ak4535 = codec->private_data; |
318 | 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 | ||
e550e17f | 341 | static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai, |
796d2ca8 RP |
342 | 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 | ||
e550e17f | 366 | static int ak4535_mute(struct snd_soc_dai *dai, int mute) |
796d2ca8 RP |
367 | { |
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 | ||
377 | static int ak4535_set_bias_level(struct snd_soc_codec *codec, | |
378 | enum snd_soc_bias_level level) | |
379 | { | |
380 | u16 i; | |
381 | ||
382 | switch (level) { | |
383 | case SND_SOC_BIAS_ON: | |
384 | ak4535_mute(codec->dai, 0); | |
385 | break; | |
386 | case SND_SOC_BIAS_PREPARE: | |
387 | ak4535_mute(codec->dai, 1); | |
388 | break; | |
389 | case SND_SOC_BIAS_STANDBY: | |
390 | i = ak4535_read_reg_cache(codec, AK4535_PM1); | |
391 | ak4535_write(codec, AK4535_PM1, i | 0x80); | |
392 | i = ak4535_read_reg_cache(codec, AK4535_PM2); | |
393 | ak4535_write(codec, AK4535_PM2, i & (~0x80)); | |
394 | break; | |
395 | case SND_SOC_BIAS_OFF: | |
396 | i = ak4535_read_reg_cache(codec, AK4535_PM1); | |
397 | ak4535_write(codec, AK4535_PM1, i & (~0x80)); | |
398 | break; | |
399 | } | |
400 | codec->bias_level = level; | |
401 | return 0; | |
402 | } | |
403 | ||
404 | #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
405 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
406 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) | |
407 | ||
6335d055 EM |
408 | static struct snd_soc_dai_ops ak4535_dai_ops = { |
409 | .hw_params = ak4535_hw_params, | |
410 | .set_fmt = ak4535_set_dai_fmt, | |
411 | .digital_mute = ak4535_mute, | |
412 | .set_sysclk = ak4535_set_dai_sysclk, | |
413 | }; | |
414 | ||
e550e17f | 415 | struct snd_soc_dai ak4535_dai = { |
796d2ca8 RP |
416 | .name = "AK4535", |
417 | .playback = { | |
418 | .stream_name = "Playback", | |
419 | .channels_min = 1, | |
420 | .channels_max = 2, | |
421 | .rates = AK4535_RATES, | |
422 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
423 | .capture = { | |
424 | .stream_name = "Capture", | |
425 | .channels_min = 1, | |
426 | .channels_max = 2, | |
427 | .rates = AK4535_RATES, | |
428 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
6335d055 | 429 | .ops = &ak4535_dai_ops, |
796d2ca8 RP |
430 | }; |
431 | EXPORT_SYMBOL_GPL(ak4535_dai); | |
432 | ||
433 | static int ak4535_suspend(struct platform_device *pdev, pm_message_t state) | |
434 | { | |
435 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 436 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
437 | |
438 | ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | static int ak4535_resume(struct platform_device *pdev) | |
443 | { | |
444 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 445 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
446 | ak4535_sync(codec); |
447 | ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
448 | ak4535_set_bias_level(codec, codec->suspend_bias_level); | |
449 | return 0; | |
450 | } | |
451 | ||
452 | /* | |
453 | * initialise the AK4535 driver | |
454 | * register the mixer and dsp interfaces with the kernel | |
455 | */ | |
456 | static int ak4535_init(struct snd_soc_device *socdev) | |
457 | { | |
6627a653 | 458 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
459 | int ret = 0; |
460 | ||
461 | codec->name = "AK4535"; | |
462 | codec->owner = THIS_MODULE; | |
463 | codec->read = ak4535_read_reg_cache; | |
464 | codec->write = ak4535_write; | |
465 | codec->set_bias_level = ak4535_set_bias_level; | |
466 | codec->dai = &ak4535_dai; | |
467 | codec->num_dai = 1; | |
468 | codec->reg_cache_size = ARRAY_SIZE(ak4535_reg); | |
469 | codec->reg_cache = kmemdup(ak4535_reg, sizeof(ak4535_reg), GFP_KERNEL); | |
470 | ||
471 | if (codec->reg_cache == NULL) | |
472 | return -ENOMEM; | |
473 | ||
474 | /* register pcms */ | |
475 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
476 | if (ret < 0) { | |
477 | printk(KERN_ERR "ak4535: failed to create pcms\n"); | |
478 | goto pcm_err; | |
479 | } | |
480 | ||
481 | /* power on device */ | |
482 | ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
483 | ||
3e8e1952 IM |
484 | snd_soc_add_controls(codec, ak4535_snd_controls, |
485 | ARRAY_SIZE(ak4535_snd_controls)); | |
796d2ca8 | 486 | ak4535_add_widgets(codec); |
796d2ca8 RP |
487 | |
488 | return ret; | |
489 | ||
796d2ca8 RP |
490 | pcm_err: |
491 | kfree(codec->reg_cache); | |
492 | ||
493 | return ret; | |
494 | } | |
495 | ||
496 | static struct snd_soc_device *ak4535_socdev; | |
497 | ||
498 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
499 | ||
d28d2713 JD |
500 | static int ak4535_i2c_probe(struct i2c_client *i2c, |
501 | const struct i2c_device_id *id) | |
796d2ca8 RP |
502 | { |
503 | struct snd_soc_device *socdev = ak4535_socdev; | |
6627a653 | 504 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
505 | int ret; |
506 | ||
796d2ca8 RP |
507 | i2c_set_clientdata(i2c, codec); |
508 | codec->control_data = i2c; | |
509 | ||
796d2ca8 | 510 | ret = ak4535_init(socdev); |
d28d2713 | 511 | if (ret < 0) |
796d2ca8 | 512 | printk(KERN_ERR "failed to initialise AK4535\n"); |
796d2ca8 | 513 | |
796d2ca8 RP |
514 | return ret; |
515 | } | |
516 | ||
d28d2713 | 517 | static int ak4535_i2c_remove(struct i2c_client *client) |
796d2ca8 RP |
518 | { |
519 | struct snd_soc_codec *codec = i2c_get_clientdata(client); | |
796d2ca8 | 520 | kfree(codec->reg_cache); |
796d2ca8 RP |
521 | return 0; |
522 | } | |
523 | ||
d28d2713 JD |
524 | static const struct i2c_device_id ak4535_i2c_id[] = { |
525 | { "ak4535", 0 }, | |
526 | { } | |
527 | }; | |
528 | MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id); | |
796d2ca8 | 529 | |
796d2ca8 RP |
530 | static struct i2c_driver ak4535_i2c_driver = { |
531 | .driver = { | |
532 | .name = "AK4535 I2C Codec", | |
533 | .owner = THIS_MODULE, | |
534 | }, | |
d28d2713 JD |
535 | .probe = ak4535_i2c_probe, |
536 | .remove = ak4535_i2c_remove, | |
537 | .id_table = ak4535_i2c_id, | |
796d2ca8 RP |
538 | }; |
539 | ||
d28d2713 JD |
540 | static int ak4535_add_i2c_device(struct platform_device *pdev, |
541 | const struct ak4535_setup_data *setup) | |
542 | { | |
543 | struct i2c_board_info info; | |
544 | struct i2c_adapter *adapter; | |
545 | struct i2c_client *client; | |
546 | int ret; | |
547 | ||
548 | ret = i2c_add_driver(&ak4535_i2c_driver); | |
549 | if (ret != 0) { | |
550 | dev_err(&pdev->dev, "can't add i2c driver\n"); | |
551 | return ret; | |
552 | } | |
553 | ||
554 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
555 | info.addr = setup->i2c_address; | |
556 | strlcpy(info.type, "ak4535", I2C_NAME_SIZE); | |
557 | ||
558 | adapter = i2c_get_adapter(setup->i2c_bus); | |
559 | if (!adapter) { | |
560 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", | |
561 | setup->i2c_bus); | |
562 | goto err_driver; | |
563 | } | |
564 | ||
565 | client = i2c_new_device(adapter, &info); | |
566 | i2c_put_adapter(adapter); | |
567 | if (!client) { | |
568 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", | |
569 | (unsigned int)info.addr); | |
570 | goto err_driver; | |
571 | } | |
572 | ||
573 | return 0; | |
574 | ||
575 | err_driver: | |
576 | i2c_del_driver(&ak4535_i2c_driver); | |
577 | return -ENODEV; | |
578 | } | |
796d2ca8 RP |
579 | #endif |
580 | ||
581 | static int ak4535_probe(struct platform_device *pdev) | |
582 | { | |
583 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
584 | struct ak4535_setup_data *setup; | |
585 | struct snd_soc_codec *codec; | |
586 | struct ak4535_priv *ak4535; | |
b7c9d852 | 587 | int ret; |
796d2ca8 RP |
588 | |
589 | printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION); | |
590 | ||
591 | setup = socdev->codec_data; | |
592 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
593 | if (codec == NULL) | |
594 | return -ENOMEM; | |
595 | ||
596 | ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL); | |
597 | if (ak4535 == NULL) { | |
598 | kfree(codec); | |
599 | return -ENOMEM; | |
600 | } | |
601 | ||
602 | codec->private_data = ak4535; | |
6627a653 | 603 | socdev->card->codec = codec; |
796d2ca8 RP |
604 | mutex_init(&codec->mutex); |
605 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
606 | INIT_LIST_HEAD(&codec->dapm_paths); | |
607 | ||
608 | ak4535_socdev = socdev; | |
b7c9d852 MB |
609 | ret = -ENODEV; |
610 | ||
796d2ca8 RP |
611 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
612 | if (setup->i2c_address) { | |
796d2ca8 | 613 | codec->hw_write = (hw_write_t)i2c_master_send; |
d28d2713 | 614 | ret = ak4535_add_i2c_device(pdev, setup); |
796d2ca8 | 615 | } |
796d2ca8 | 616 | #endif |
3051e41a JD |
617 | |
618 | if (ret != 0) { | |
619 | kfree(codec->private_data); | |
620 | kfree(codec); | |
621 | } | |
796d2ca8 RP |
622 | return ret; |
623 | } | |
624 | ||
625 | /* power down chip */ | |
626 | static int ak4535_remove(struct platform_device *pdev) | |
627 | { | |
628 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 629 | struct snd_soc_codec *codec = socdev->card->codec; |
796d2ca8 RP |
630 | |
631 | if (codec->control_data) | |
632 | ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
633 | ||
634 | snd_soc_free_pcms(socdev); | |
635 | snd_soc_dapm_free(socdev); | |
636 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
09318c47 DC |
637 | if (codec->control_data) |
638 | i2c_unregister_device(codec->control_data); | |
796d2ca8 RP |
639 | i2c_del_driver(&ak4535_i2c_driver); |
640 | #endif | |
641 | kfree(codec->private_data); | |
642 | kfree(codec); | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | struct snd_soc_codec_device soc_codec_dev_ak4535 = { | |
648 | .probe = ak4535_probe, | |
649 | .remove = ak4535_remove, | |
650 | .suspend = ak4535_suspend, | |
651 | .resume = ak4535_resume, | |
652 | }; | |
653 | EXPORT_SYMBOL_GPL(soc_codec_dev_ak4535); | |
654 | ||
c9b3a40f | 655 | static int __init ak4535_modinit(void) |
64089b84 MB |
656 | { |
657 | return snd_soc_register_dai(&ak4535_dai); | |
658 | } | |
659 | module_init(ak4535_modinit); | |
660 | ||
661 | static void __exit ak4535_exit(void) | |
662 | { | |
663 | snd_soc_unregister_dai(&ak4535_dai); | |
664 | } | |
665 | module_exit(ak4535_exit); | |
666 | ||
796d2ca8 RP |
667 | MODULE_DESCRIPTION("Soc AK4535 driver"); |
668 | MODULE_AUTHOR("Richard Purdie"); | |
669 | MODULE_LICENSE("GPL"); |