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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 | ||
31 | #define AUDIO_NAME "ak4535" | |
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 | ||
63 | static inline unsigned int ak4535_read(struct snd_soc_codec *codec, | |
64 | unsigned int reg) | |
65 | { | |
66 | u8 data; | |
67 | data = reg; | |
68 | ||
69 | if (codec->hw_write(codec->control_data, &data, 1) != 1) | |
70 | return -EIO; | |
71 | ||
72 | if (codec->hw_read(codec->control_data, &data, 1) != 1) | |
73 | return -EIO; | |
74 | ||
75 | return data; | |
76 | }; | |
77 | ||
78 | /* | |
79 | * write ak4535 register cache | |
80 | */ | |
81 | static inline void ak4535_write_reg_cache(struct snd_soc_codec *codec, | |
82 | u16 reg, unsigned int value) | |
83 | { | |
84 | u16 *cache = codec->reg_cache; | |
85 | if (reg >= AK4535_CACHEREGNUM) | |
86 | return; | |
87 | cache[reg] = value; | |
88 | } | |
89 | ||
90 | /* | |
91 | * write to the AK4535 register space | |
92 | */ | |
93 | static int ak4535_write(struct snd_soc_codec *codec, unsigned int reg, | |
94 | unsigned int value) | |
95 | { | |
96 | u8 data[2]; | |
97 | ||
98 | /* data is | |
99 | * D15..D8 AK4535 register offset | |
100 | * D7...D0 register data | |
101 | */ | |
102 | data[0] = reg & 0xff; | |
103 | data[1] = value & 0xff; | |
104 | ||
105 | ak4535_write_reg_cache(codec, reg, value); | |
106 | if (codec->hw_write(codec->control_data, data, 2) == 2) | |
107 | return 0; | |
108 | else | |
109 | return -EIO; | |
110 | } | |
111 | ||
112 | static int ak4535_sync(struct snd_soc_codec *codec) | |
113 | { | |
114 | u16 *cache = codec->reg_cache; | |
115 | int i, r = 0; | |
116 | ||
117 | for (i = 0; i < AK4535_CACHEREGNUM; i++) | |
118 | r |= ak4535_write(codec, i, cache[i]); | |
119 | ||
120 | return r; | |
121 | }; | |
122 | ||
123 | static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"}; | |
124 | static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"}; | |
125 | static const char *ak4535_hp_out[] = {"Stereo", "Mono"}; | |
126 | static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"}; | |
127 | static const char *ak4535_mic_select[] = {"Internal", "External"}; | |
128 | ||
129 | static const struct soc_enum ak4535_enum[] = { | |
130 | SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain), | |
131 | SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out), | |
132 | SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out), | |
133 | SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp), | |
134 | SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select), | |
135 | }; | |
136 | ||
137 | static const struct snd_kcontrol_new ak4535_snd_controls[] = { | |
138 | SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0), | |
139 | SOC_ENUM("Mono 1 Output", ak4535_enum[1]), | |
140 | SOC_ENUM("Mono 1 Gain", ak4535_enum[0]), | |
141 | SOC_ENUM("Headphone Output", ak4535_enum[2]), | |
142 | SOC_ENUM("Playback Deemphasis", ak4535_enum[3]), | |
143 | SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0), | |
144 | SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0), | |
145 | SOC_ENUM("Mic Select", ak4535_enum[4]), | |
146 | SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0), | |
147 | SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0), | |
148 | SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0), | |
149 | SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0), | |
150 | SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0), | |
151 | SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0), | |
152 | SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0), | |
153 | SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1), | |
154 | SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1), | |
155 | SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0), | |
156 | SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0), | |
157 | }; | |
158 | ||
159 | /* add non dapm controls */ | |
160 | static int ak4535_add_controls(struct snd_soc_codec *codec) | |
161 | { | |
162 | int err, i; | |
163 | ||
164 | for (i = 0; i < ARRAY_SIZE(ak4535_snd_controls); i++) { | |
165 | err = snd_ctl_add(codec->card, | |
166 | snd_soc_cnew(&ak4535_snd_controls[i], codec, NULL)); | |
167 | if (err < 0) | |
168 | return err; | |
169 | } | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | /* Mono 1 Mixer */ | |
175 | static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = { | |
176 | SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0), | |
177 | SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0), | |
178 | }; | |
179 | ||
180 | /* Stereo Mixer */ | |
181 | static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = { | |
182 | SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0), | |
183 | SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0), | |
184 | SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0), | |
185 | }; | |
186 | ||
187 | /* Input Mixer */ | |
188 | static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = { | |
189 | SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0), | |
190 | SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0), | |
191 | }; | |
192 | ||
193 | /* Input mux */ | |
194 | static const struct snd_kcontrol_new ak4535_input_mux_control = | |
195 | SOC_DAPM_ENUM("Input Select", ak4535_enum[4]); | |
196 | ||
197 | /* HP L switch */ | |
198 | static const struct snd_kcontrol_new ak4535_hpl_control = | |
199 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1); | |
200 | ||
201 | /* HP R switch */ | |
202 | static const struct snd_kcontrol_new ak4535_hpr_control = | |
203 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1); | |
204 | ||
205 | /* mono 2 switch */ | |
206 | static const struct snd_kcontrol_new ak4535_mono2_control = | |
207 | SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0); | |
208 | ||
209 | /* Line out switch */ | |
210 | static const struct snd_kcontrol_new ak4535_line_control = | |
211 | SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0); | |
212 | ||
213 | /* ak4535 dapm widgets */ | |
214 | static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = { | |
215 | SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0, | |
216 | &ak4535_stereo_mixer_controls[0], | |
217 | ARRAY_SIZE(ak4535_stereo_mixer_controls)), | |
218 | SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0, | |
219 | &ak4535_mono1_mixer_controls[0], | |
220 | ARRAY_SIZE(ak4535_mono1_mixer_controls)), | |
221 | SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, | |
222 | &ak4535_input_mixer_controls[0], | |
223 | ARRAY_SIZE(ak4535_input_mixer_controls)), | |
224 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, | |
225 | &ak4535_input_mux_control), | |
226 | SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0), | |
227 | SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0, | |
228 | &ak4535_mono2_control), | |
229 | /* speaker powersave bit */ | |
230 | SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0), | |
231 | SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0, | |
232 | &ak4535_line_control), | |
233 | SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0, | |
234 | &ak4535_hpl_control), | |
235 | SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0, | |
236 | &ak4535_hpr_control), | |
237 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
238 | SND_SOC_DAPM_OUTPUT("HPL"), | |
239 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
240 | SND_SOC_DAPM_OUTPUT("HPR"), | |
241 | SND_SOC_DAPM_OUTPUT("SPP"), | |
242 | SND_SOC_DAPM_OUTPUT("SPN"), | |
243 | SND_SOC_DAPM_OUTPUT("MOUT1"), | |
244 | SND_SOC_DAPM_OUTPUT("MOUT2"), | |
245 | SND_SOC_DAPM_OUTPUT("MICOUT"), | |
246 | SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0), | |
247 | SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0), | |
248 | SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0), | |
249 | SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0), | |
250 | SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0), | |
251 | SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0), | |
252 | SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0), | |
253 | SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0), | |
254 | ||
255 | SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0), | |
256 | SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0), | |
257 | SND_SOC_DAPM_INPUT("MICIN"), | |
258 | SND_SOC_DAPM_INPUT("MICEXT"), | |
259 | SND_SOC_DAPM_INPUT("AUX"), | |
260 | SND_SOC_DAPM_INPUT("MIN"), | |
261 | SND_SOC_DAPM_INPUT("AIN"), | |
262 | }; | |
263 | ||
264 | static const struct snd_soc_dapm_route audio_map[] = { | |
265 | /*stereo mixer */ | |
266 | {"Stereo Mixer", "Playback Switch", "DAC"}, | |
267 | {"Stereo Mixer", "Mic Sidetone Switch", "Mic"}, | |
268 | {"Stereo Mixer", "Aux Bypass Switch", "AUX In"}, | |
269 | ||
270 | /* mono1 mixer */ | |
271 | {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"}, | |
272 | {"Mono1 Mixer", "Mono Playback Switch", "DAC"}, | |
273 | ||
274 | /* Mic */ | |
275 | {"Mic", NULL, "AIN"}, | |
276 | {"Input Mux", "Internal", "Mic Int Bias"}, | |
277 | {"Input Mux", "External", "Mic Ext Bias"}, | |
278 | {"Mic Int Bias", NULL, "MICIN"}, | |
279 | {"Mic Ext Bias", NULL, "MICEXT"}, | |
280 | {"MICOUT", NULL, "Input Mux"}, | |
281 | ||
282 | /* line out */ | |
283 | {"LOUT", NULL, "Line Out Enable"}, | |
284 | {"ROUT", NULL, "Line Out Enable"}, | |
285 | {"Line Out Enable", "Switch", "Line Out"}, | |
286 | {"Line Out", NULL, "Stereo Mixer"}, | |
287 | ||
288 | /* mono1 out */ | |
289 | {"MOUT1", NULL, "Mono Out"}, | |
290 | {"Mono Out", NULL, "Mono1 Mixer"}, | |
291 | ||
292 | /* left HP */ | |
293 | {"HPL", NULL, "Left HP Enable"}, | |
294 | {"Left HP Enable", "Switch", "HP L Amp"}, | |
295 | {"HP L Amp", NULL, "Stereo Mixer"}, | |
296 | ||
297 | /* right HP */ | |
298 | {"HPR", NULL, "Right HP Enable"}, | |
299 | {"Right HP Enable", "Switch", "HP R Amp"}, | |
300 | {"HP R Amp", NULL, "Stereo Mixer"}, | |
301 | ||
302 | /* speaker */ | |
303 | {"SPP", NULL, "Speaker Enable"}, | |
304 | {"SPN", NULL, "Speaker Enable"}, | |
305 | {"Speaker Enable", "Switch", "Spk Amp"}, | |
306 | {"Spk Amp", NULL, "MIN"}, | |
307 | ||
308 | /* mono 2 */ | |
309 | {"MOUT2", NULL, "Mono 2 Enable"}, | |
310 | {"Mono 2 Enable", "Switch", "Stereo Mixer"}, | |
311 | ||
312 | /* Aux In */ | |
313 | {"Aux In", NULL, "AUX"}, | |
314 | ||
315 | /* ADC */ | |
316 | {"ADC", NULL, "Input Mixer"}, | |
317 | {"Input Mixer", "Mic Capture Switch", "Mic"}, | |
318 | {"Input Mixer", "Aux Capture Switch", "Aux In"}, | |
319 | }; | |
320 | ||
321 | static int ak4535_add_widgets(struct snd_soc_codec *codec) | |
322 | { | |
323 | snd_soc_dapm_new_controls(codec, ak4535_dapm_widgets, | |
324 | ARRAY_SIZE(ak4535_dapm_widgets)); | |
325 | ||
326 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
327 | ||
328 | snd_soc_dapm_new_widgets(codec); | |
329 | return 0; | |
330 | } | |
331 | ||
e550e17f | 332 | static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
796d2ca8 RP |
333 | int clk_id, unsigned int freq, int dir) |
334 | { | |
335 | struct snd_soc_codec *codec = codec_dai->codec; | |
336 | struct ak4535_priv *ak4535 = codec->private_data; | |
337 | ||
338 | ak4535->sysclk = freq; | |
339 | return 0; | |
340 | } | |
341 | ||
342 | static int ak4535_hw_params(struct snd_pcm_substream *substream, | |
343 | struct snd_pcm_hw_params *params) | |
344 | { | |
345 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
346 | struct snd_soc_device *socdev = rtd->socdev; | |
347 | struct snd_soc_codec *codec = socdev->codec; | |
348 | struct ak4535_priv *ak4535 = codec->private_data; | |
349 | u8 mode2 = ak4535_read_reg_cache(codec, AK4535_MODE2) & ~(0x3 << 5); | |
350 | int rate = params_rate(params), fs = 256; | |
351 | ||
352 | if (rate) | |
353 | fs = ak4535->sysclk / rate; | |
354 | ||
355 | /* set fs */ | |
356 | switch (fs) { | |
357 | case 1024: | |
358 | mode2 |= (0x2 << 5); | |
359 | break; | |
360 | case 512: | |
361 | mode2 |= (0x1 << 5); | |
362 | break; | |
363 | case 256: | |
364 | break; | |
365 | } | |
366 | ||
367 | /* set rate */ | |
368 | ak4535_write(codec, AK4535_MODE2, mode2); | |
369 | return 0; | |
370 | } | |
371 | ||
e550e17f | 372 | static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai, |
796d2ca8 RP |
373 | unsigned int fmt) |
374 | { | |
375 | struct snd_soc_codec *codec = codec_dai->codec; | |
376 | u8 mode1 = 0; | |
377 | ||
378 | /* interface format */ | |
379 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
380 | case SND_SOC_DAIFMT_I2S: | |
381 | mode1 = 0x0002; | |
382 | break; | |
383 | case SND_SOC_DAIFMT_LEFT_J: | |
384 | mode1 = 0x0001; | |
385 | break; | |
386 | default: | |
387 | return -EINVAL; | |
388 | } | |
389 | ||
390 | /* use 32 fs for BCLK to save power */ | |
391 | mode1 |= 0x4; | |
392 | ||
393 | ak4535_write(codec, AK4535_MODE1, mode1); | |
394 | return 0; | |
395 | } | |
396 | ||
e550e17f | 397 | static int ak4535_mute(struct snd_soc_dai *dai, int mute) |
796d2ca8 RP |
398 | { |
399 | struct snd_soc_codec *codec = dai->codec; | |
400 | u16 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf; | |
401 | if (!mute) | |
402 | ak4535_write(codec, AK4535_DAC, mute_reg); | |
403 | else | |
404 | ak4535_write(codec, AK4535_DAC, mute_reg | 0x20); | |
405 | return 0; | |
406 | } | |
407 | ||
408 | static int ak4535_set_bias_level(struct snd_soc_codec *codec, | |
409 | enum snd_soc_bias_level level) | |
410 | { | |
411 | u16 i; | |
412 | ||
413 | switch (level) { | |
414 | case SND_SOC_BIAS_ON: | |
415 | ak4535_mute(codec->dai, 0); | |
416 | break; | |
417 | case SND_SOC_BIAS_PREPARE: | |
418 | ak4535_mute(codec->dai, 1); | |
419 | break; | |
420 | case SND_SOC_BIAS_STANDBY: | |
421 | i = ak4535_read_reg_cache(codec, AK4535_PM1); | |
422 | ak4535_write(codec, AK4535_PM1, i | 0x80); | |
423 | i = ak4535_read_reg_cache(codec, AK4535_PM2); | |
424 | ak4535_write(codec, AK4535_PM2, i & (~0x80)); | |
425 | break; | |
426 | case SND_SOC_BIAS_OFF: | |
427 | i = ak4535_read_reg_cache(codec, AK4535_PM1); | |
428 | ak4535_write(codec, AK4535_PM1, i & (~0x80)); | |
429 | break; | |
430 | } | |
431 | codec->bias_level = level; | |
432 | return 0; | |
433 | } | |
434 | ||
435 | #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
436 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
437 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) | |
438 | ||
e550e17f | 439 | struct snd_soc_dai ak4535_dai = { |
796d2ca8 RP |
440 | .name = "AK4535", |
441 | .playback = { | |
442 | .stream_name = "Playback", | |
443 | .channels_min = 1, | |
444 | .channels_max = 2, | |
445 | .rates = AK4535_RATES, | |
446 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
447 | .capture = { | |
448 | .stream_name = "Capture", | |
449 | .channels_min = 1, | |
450 | .channels_max = 2, | |
451 | .rates = AK4535_RATES, | |
452 | .formats = SNDRV_PCM_FMTBIT_S16_LE,}, | |
453 | .ops = { | |
454 | .hw_params = ak4535_hw_params, | |
455 | }, | |
456 | .dai_ops = { | |
457 | .set_fmt = ak4535_set_dai_fmt, | |
458 | .digital_mute = ak4535_mute, | |
459 | .set_sysclk = ak4535_set_dai_sysclk, | |
460 | }, | |
461 | }; | |
462 | EXPORT_SYMBOL_GPL(ak4535_dai); | |
463 | ||
464 | static int ak4535_suspend(struct platform_device *pdev, pm_message_t state) | |
465 | { | |
466 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
467 | struct snd_soc_codec *codec = socdev->codec; | |
468 | ||
469 | ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static int ak4535_resume(struct platform_device *pdev) | |
474 | { | |
475 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
476 | struct snd_soc_codec *codec = socdev->codec; | |
477 | ak4535_sync(codec); | |
478 | ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
479 | ak4535_set_bias_level(codec, codec->suspend_bias_level); | |
480 | return 0; | |
481 | } | |
482 | ||
483 | /* | |
484 | * initialise the AK4535 driver | |
485 | * register the mixer and dsp interfaces with the kernel | |
486 | */ | |
487 | static int ak4535_init(struct snd_soc_device *socdev) | |
488 | { | |
489 | struct snd_soc_codec *codec = socdev->codec; | |
490 | int ret = 0; | |
491 | ||
492 | codec->name = "AK4535"; | |
493 | codec->owner = THIS_MODULE; | |
494 | codec->read = ak4535_read_reg_cache; | |
495 | codec->write = ak4535_write; | |
496 | codec->set_bias_level = ak4535_set_bias_level; | |
497 | codec->dai = &ak4535_dai; | |
498 | codec->num_dai = 1; | |
499 | codec->reg_cache_size = ARRAY_SIZE(ak4535_reg); | |
500 | codec->reg_cache = kmemdup(ak4535_reg, sizeof(ak4535_reg), GFP_KERNEL); | |
501 | ||
502 | if (codec->reg_cache == NULL) | |
503 | return -ENOMEM; | |
504 | ||
505 | /* register pcms */ | |
506 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
507 | if (ret < 0) { | |
508 | printk(KERN_ERR "ak4535: failed to create pcms\n"); | |
509 | goto pcm_err; | |
510 | } | |
511 | ||
512 | /* power on device */ | |
513 | ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
514 | ||
515 | ak4535_add_controls(codec); | |
516 | ak4535_add_widgets(codec); | |
517 | ret = snd_soc_register_card(socdev); | |
518 | if (ret < 0) { | |
519 | printk(KERN_ERR "ak4535: failed to register card\n"); | |
520 | goto card_err; | |
521 | } | |
522 | ||
523 | return ret; | |
524 | ||
525 | card_err: | |
526 | snd_soc_free_pcms(socdev); | |
527 | snd_soc_dapm_free(socdev); | |
528 | pcm_err: | |
529 | kfree(codec->reg_cache); | |
530 | ||
531 | return ret; | |
532 | } | |
533 | ||
534 | static struct snd_soc_device *ak4535_socdev; | |
535 | ||
536 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
537 | ||
538 | #define I2C_DRIVERID_AK4535 0xfefe /* liam - need a proper id */ | |
539 | ||
540 | static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; | |
541 | ||
542 | /* Magic definition of all other variables and things */ | |
543 | I2C_CLIENT_INSMOD; | |
544 | ||
545 | static struct i2c_driver ak4535_i2c_driver; | |
546 | static struct i2c_client client_template; | |
547 | ||
548 | /* If the i2c layer weren't so broken, we could pass this kind of data | |
549 | around */ | |
550 | static int ak4535_codec_probe(struct i2c_adapter *adap, int addr, int kind) | |
551 | { | |
552 | struct snd_soc_device *socdev = ak4535_socdev; | |
553 | struct ak4535_setup_data *setup = socdev->codec_data; | |
554 | struct snd_soc_codec *codec = socdev->codec; | |
555 | struct i2c_client *i2c; | |
556 | int ret; | |
557 | ||
558 | if (addr != setup->i2c_address) | |
559 | return -ENODEV; | |
560 | ||
561 | client_template.adapter = adap; | |
562 | client_template.addr = addr; | |
563 | ||
564 | i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL); | |
565 | if (i2c == NULL) { | |
566 | kfree(codec); | |
567 | return -ENOMEM; | |
568 | } | |
569 | i2c_set_clientdata(i2c, codec); | |
570 | codec->control_data = i2c; | |
571 | ||
572 | ret = i2c_attach_client(i2c); | |
573 | if (ret < 0) { | |
574 | printk(KERN_ERR "failed to attach codec at addr %x\n", addr); | |
575 | goto err; | |
576 | } | |
577 | ||
578 | ret = ak4535_init(socdev); | |
579 | if (ret < 0) { | |
580 | printk(KERN_ERR "failed to initialise AK4535\n"); | |
581 | goto err; | |
582 | } | |
583 | return ret; | |
584 | ||
585 | err: | |
586 | kfree(codec); | |
587 | kfree(i2c); | |
588 | return ret; | |
589 | } | |
590 | ||
591 | static int ak4535_i2c_detach(struct i2c_client *client) | |
592 | { | |
593 | struct snd_soc_codec *codec = i2c_get_clientdata(client); | |
594 | i2c_detach_client(client); | |
595 | kfree(codec->reg_cache); | |
596 | kfree(client); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | static int ak4535_i2c_attach(struct i2c_adapter *adap) | |
601 | { | |
602 | return i2c_probe(adap, &addr_data, ak4535_codec_probe); | |
603 | } | |
604 | ||
605 | /* corgi i2c codec control layer */ | |
606 | static struct i2c_driver ak4535_i2c_driver = { | |
607 | .driver = { | |
608 | .name = "AK4535 I2C Codec", | |
609 | .owner = THIS_MODULE, | |
610 | }, | |
611 | .id = I2C_DRIVERID_AK4535, | |
612 | .attach_adapter = ak4535_i2c_attach, | |
613 | .detach_client = ak4535_i2c_detach, | |
614 | .command = NULL, | |
615 | }; | |
616 | ||
617 | static struct i2c_client client_template = { | |
618 | .name = "AK4535", | |
619 | .driver = &ak4535_i2c_driver, | |
620 | }; | |
621 | #endif | |
622 | ||
623 | static int ak4535_probe(struct platform_device *pdev) | |
624 | { | |
625 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
626 | struct ak4535_setup_data *setup; | |
627 | struct snd_soc_codec *codec; | |
628 | struct ak4535_priv *ak4535; | |
629 | int ret = 0; | |
630 | ||
631 | printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION); | |
632 | ||
633 | setup = socdev->codec_data; | |
634 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
635 | if (codec == NULL) | |
636 | return -ENOMEM; | |
637 | ||
638 | ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL); | |
639 | if (ak4535 == NULL) { | |
640 | kfree(codec); | |
641 | return -ENOMEM; | |
642 | } | |
643 | ||
644 | codec->private_data = ak4535; | |
645 | socdev->codec = codec; | |
646 | mutex_init(&codec->mutex); | |
647 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
648 | INIT_LIST_HEAD(&codec->dapm_paths); | |
649 | ||
650 | ak4535_socdev = socdev; | |
651 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
652 | if (setup->i2c_address) { | |
653 | normal_i2c[0] = setup->i2c_address; | |
654 | codec->hw_write = (hw_write_t)i2c_master_send; | |
655 | codec->hw_read = (hw_read_t)i2c_master_recv; | |
656 | ret = i2c_add_driver(&ak4535_i2c_driver); | |
657 | if (ret != 0) | |
658 | printk(KERN_ERR "can't add i2c driver"); | |
659 | } | |
660 | #else | |
661 | /* Add other interfaces here */ | |
662 | #endif | |
663 | return ret; | |
664 | } | |
665 | ||
666 | /* power down chip */ | |
667 | static int ak4535_remove(struct platform_device *pdev) | |
668 | { | |
669 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
670 | struct snd_soc_codec *codec = socdev->codec; | |
671 | ||
672 | if (codec->control_data) | |
673 | ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
674 | ||
675 | snd_soc_free_pcms(socdev); | |
676 | snd_soc_dapm_free(socdev); | |
677 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
678 | i2c_del_driver(&ak4535_i2c_driver); | |
679 | #endif | |
680 | kfree(codec->private_data); | |
681 | kfree(codec); | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | struct snd_soc_codec_device soc_codec_dev_ak4535 = { | |
687 | .probe = ak4535_probe, | |
688 | .remove = ak4535_remove, | |
689 | .suspend = ak4535_suspend, | |
690 | .resume = ak4535_resume, | |
691 | }; | |
692 | EXPORT_SYMBOL_GPL(soc_codec_dev_ak4535); | |
693 | ||
694 | MODULE_DESCRIPTION("Soc AK4535 driver"); | |
695 | MODULE_AUTHOR("Richard Purdie"); | |
696 | MODULE_LICENSE("GPL"); |