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12#include <linux/module.h>
13#include <linux/moduleparam.h>
14#include <linux/init.h>
15#include <linux/delay.h>
16#include <linux/pm.h>
17#include <linux/i2c.h>
18#include <linux/regmap.h>
19#include <linux/slab.h>
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/pcm_params.h>
23#include <sound/soc.h>
24#include <sound/initval.h>
25
26#include "ak4535.h"
27
28
29struct ak4535_priv {
30 struct regmap *regmap;
31 unsigned int sysclk;
32};
33
34
35
36
37static const struct reg_default ak4535_reg_defaults[] = {
38 { 0, 0x00 },
39 { 1, 0x80 },
40 { 2, 0x00 },
41 { 3, 0x03 },
42 { 4, 0x02 },
43 { 5, 0x00 },
44 { 6, 0x11 },
45 { 7, 0x01 },
46 { 8, 0x00 },
47 { 9, 0x40 },
48 { 10, 0x36 },
49 { 11, 0x10 },
50 { 12, 0x00 },
51 { 13, 0x00 },
52 { 14, 0x57 },
53};
54
55static bool ak4535_volatile(struct device *dev, unsigned int reg)
56{
57 switch (reg) {
58 case AK4535_STATUS:
59 return true;
60 default:
61 return false;
62 }
63}
64
65static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
66static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
67static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
68static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
69static const char *ak4535_mic_select[] = {"Internal", "External"};
70
71static const struct soc_enum ak4535_enum[] = {
72 SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
73 SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
74 SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
75 SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
76 SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
77};
78
79static const struct snd_kcontrol_new ak4535_snd_controls[] = {
80 SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
81 SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
82 SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
83 SOC_ENUM("Headphone Output", ak4535_enum[2]),
84 SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
85 SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
86 SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
87 SOC_ENUM("Mic Select", ak4535_enum[4]),
88 SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
89 SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
90 SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
91 SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
92 SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
93 SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
94 SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
95 SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
96 SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
97 SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
98 SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
99};
100
101
102static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
103 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
104 SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
105};
106
107
108static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
109 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
110 SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
111 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
112};
113
114
115static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
116 SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
117 SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
118};
119
120
121static const struct snd_kcontrol_new ak4535_input_mux_control =
122 SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
123
124
125static const struct snd_kcontrol_new ak4535_hpl_control =
126 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
127
128
129static const struct snd_kcontrol_new ak4535_hpr_control =
130 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
131
132
133static const struct snd_kcontrol_new ak4535_mono2_control =
134 SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
135
136
137static const struct snd_kcontrol_new ak4535_line_control =
138 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
139
140
141static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
142 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
143 &ak4535_stereo_mixer_controls[0],
144 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
145 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
146 &ak4535_mono1_mixer_controls[0],
147 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
148 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
149 &ak4535_input_mixer_controls[0],
150 ARRAY_SIZE(ak4535_input_mixer_controls)),
151 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
152 &ak4535_input_mux_control),
153 SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
154 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
155 &ak4535_mono2_control),
156
157 SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
158 SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
159 &ak4535_line_control),
160 SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
161 &ak4535_hpl_control),
162 SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
163 &ak4535_hpr_control),
164 SND_SOC_DAPM_OUTPUT("LOUT"),
165 SND_SOC_DAPM_OUTPUT("HPL"),
166 SND_SOC_DAPM_OUTPUT("ROUT"),
167 SND_SOC_DAPM_OUTPUT("HPR"),
168 SND_SOC_DAPM_OUTPUT("SPP"),
169 SND_SOC_DAPM_OUTPUT("SPN"),
170 SND_SOC_DAPM_OUTPUT("MOUT1"),
171 SND_SOC_DAPM_OUTPUT("MOUT2"),
172 SND_SOC_DAPM_OUTPUT("MICOUT"),
173 SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
174 SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
175 SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
176 SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
177 SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
178 SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
179 SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
180 SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
181
182 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
183 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
184 SND_SOC_DAPM_INPUT("MICIN"),
185 SND_SOC_DAPM_INPUT("MICEXT"),
186 SND_SOC_DAPM_INPUT("AUX"),
187 SND_SOC_DAPM_INPUT("MIN"),
188 SND_SOC_DAPM_INPUT("AIN"),
189};
190
191static const struct snd_soc_dapm_route ak4535_audio_map[] = {
192
193 {"Stereo Mixer", "Playback Switch", "DAC"},
194 {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
195 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
196
197
198 {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
199 {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
200
201
202 {"Mic", NULL, "AIN"},
203 {"Input Mux", "Internal", "Mic Int Bias"},
204 {"Input Mux", "External", "Mic Ext Bias"},
205 {"Mic Int Bias", NULL, "MICIN"},
206 {"Mic Ext Bias", NULL, "MICEXT"},
207 {"MICOUT", NULL, "Input Mux"},
208
209
210 {"LOUT", NULL, "Line Out Enable"},
211 {"ROUT", NULL, "Line Out Enable"},
212 {"Line Out Enable", "Switch", "Line Out"},
213 {"Line Out", NULL, "Stereo Mixer"},
214
215
216 {"MOUT1", NULL, "Mono Out"},
217 {"Mono Out", NULL, "Mono1 Mixer"},
218
219
220 {"HPL", NULL, "Left HP Enable"},
221 {"Left HP Enable", "Switch", "HP L Amp"},
222 {"HP L Amp", NULL, "Stereo Mixer"},
223
224
225 {"HPR", NULL, "Right HP Enable"},
226 {"Right HP Enable", "Switch", "HP R Amp"},
227 {"HP R Amp", NULL, "Stereo Mixer"},
228
229
230 {"SPP", NULL, "Speaker Enable"},
231 {"SPN", NULL, "Speaker Enable"},
232 {"Speaker Enable", "Switch", "Spk Amp"},
233 {"Spk Amp", NULL, "MIN"},
234
235
236 {"MOUT2", NULL, "Mono 2 Enable"},
237 {"Mono 2 Enable", "Switch", "Stereo Mixer"},
238
239
240 {"Aux In", NULL, "AUX"},
241
242
243 {"ADC", NULL, "Input Mixer"},
244 {"Input Mixer", "Mic Capture Switch", "Mic"},
245 {"Input Mixer", "Aux Capture Switch", "Aux In"},
246};
247
248static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
249 int clk_id, unsigned int freq, int dir)
250{
251 struct snd_soc_component *component = codec_dai->component;
252 struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
253
254 ak4535->sysclk = freq;
255 return 0;
256}
257
258static int ak4535_hw_params(struct snd_pcm_substream *substream,
259 struct snd_pcm_hw_params *params,
260 struct snd_soc_dai *dai)
261{
262 struct snd_soc_component *component = dai->component;
263 struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
264 u8 mode2 = snd_soc_component_read(component, AK4535_MODE2) & ~(0x3 << 5);
265 int rate = params_rate(params), fs = 256;
266
267 if (rate)
268 fs = ak4535->sysclk / rate;
269
270
271 switch (fs) {
272 case 1024:
273 mode2 |= (0x2 << 5);
274 break;
275 case 512:
276 mode2 |= (0x1 << 5);
277 break;
278 case 256:
279 break;
280 }
281
282
283 snd_soc_component_write(component, AK4535_MODE2, mode2);
284 return 0;
285}
286
287static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
288 unsigned int fmt)
289{
290 struct snd_soc_component *component = codec_dai->component;
291 u8 mode1 = 0;
292
293
294 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
295 case SND_SOC_DAIFMT_I2S:
296 mode1 = 0x0002;
297 break;
298 case SND_SOC_DAIFMT_LEFT_J:
299 mode1 = 0x0001;
300 break;
301 default:
302 return -EINVAL;
303 }
304
305
306 mode1 |= 0x4;
307
308 snd_soc_component_write(component, AK4535_MODE1, mode1);
309 return 0;
310}
311
312static int ak4535_mute(struct snd_soc_dai *dai, int mute, int direction)
313{
314 struct snd_soc_component *component = dai->component;
315 u16 mute_reg = snd_soc_component_read(component, AK4535_DAC);
316
317 if (!mute)
318 snd_soc_component_write(component, AK4535_DAC, mute_reg & ~0x20);
319 else
320 snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20);
321 return 0;
322}
323
324static int ak4535_set_bias_level(struct snd_soc_component *component,
325 enum snd_soc_bias_level level)
326{
327 switch (level) {
328 case SND_SOC_BIAS_ON:
329 snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0);
330 break;
331 case SND_SOC_BIAS_PREPARE:
332 snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0x20);
333 break;
334 case SND_SOC_BIAS_STANDBY:
335 snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0x80);
336 snd_soc_component_update_bits(component, AK4535_PM2, 0x80, 0);
337 break;
338 case SND_SOC_BIAS_OFF:
339 snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0);
340 break;
341 }
342 return 0;
343}
344
345#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
346 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
347 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
348
349static const struct snd_soc_dai_ops ak4535_dai_ops = {
350 .hw_params = ak4535_hw_params,
351 .set_fmt = ak4535_set_dai_fmt,
352 .mute_stream = ak4535_mute,
353 .set_sysclk = ak4535_set_dai_sysclk,
354 .no_capture_mute = 1,
355};
356
357static struct snd_soc_dai_driver ak4535_dai = {
358 .name = "ak4535-hifi",
359 .playback = {
360 .stream_name = "Playback",
361 .channels_min = 1,
362 .channels_max = 2,
363 .rates = AK4535_RATES,
364 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
365 .capture = {
366 .stream_name = "Capture",
367 .channels_min = 1,
368 .channels_max = 2,
369 .rates = AK4535_RATES,
370 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
371 .ops = &ak4535_dai_ops,
372};
373
374static int ak4535_resume(struct snd_soc_component *component)
375{
376 snd_soc_component_cache_sync(component);
377 return 0;
378}
379
380static const struct regmap_config ak4535_regmap = {
381 .reg_bits = 8,
382 .val_bits = 8,
383
384 .max_register = AK4535_STATUS,
385 .volatile_reg = ak4535_volatile,
386
387 .cache_type = REGCACHE_RBTREE,
388 .reg_defaults = ak4535_reg_defaults,
389 .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
390};
391
392static const struct snd_soc_component_driver soc_component_dev_ak4535 = {
393 .resume = ak4535_resume,
394 .set_bias_level = ak4535_set_bias_level,
395 .controls = ak4535_snd_controls,
396 .num_controls = ARRAY_SIZE(ak4535_snd_controls),
397 .dapm_widgets = ak4535_dapm_widgets,
398 .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
399 .dapm_routes = ak4535_audio_map,
400 .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
401 .suspend_bias_off = 1,
402 .idle_bias_on = 1,
403 .use_pmdown_time = 1,
404 .endianness = 1,
405 .non_legacy_dai_naming = 1,
406};
407
408static int ak4535_i2c_probe(struct i2c_client *i2c,
409 const struct i2c_device_id *id)
410{
411 struct ak4535_priv *ak4535;
412 int ret;
413
414 ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
415 GFP_KERNEL);
416 if (ak4535 == NULL)
417 return -ENOMEM;
418
419 ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
420 if (IS_ERR(ak4535->regmap)) {
421 ret = PTR_ERR(ak4535->regmap);
422 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
423 return ret;
424 }
425
426 i2c_set_clientdata(i2c, ak4535);
427
428 ret = devm_snd_soc_register_component(&i2c->dev,
429 &soc_component_dev_ak4535, &ak4535_dai, 1);
430
431 return ret;
432}
433
434static const struct i2c_device_id ak4535_i2c_id[] = {
435 { "ak4535", 0 },
436 { }
437};
438MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
439
440static struct i2c_driver ak4535_i2c_driver = {
441 .driver = {
442 .name = "ak4535",
443 },
444 .probe = ak4535_i2c_probe,
445 .id_table = ak4535_i2c_id,
446};
447
448module_i2c_driver(ak4535_i2c_driver);
449
450MODULE_DESCRIPTION("Soc AK4535 driver");
451MODULE_AUTHOR("Richard Purdie");
452MODULE_LICENSE("GPL");
453
