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18#include <linux/module.h>
19#include <linux/moduleparam.h>
20#include <linux/init.h>
21#include <linux/delay.h>
22#include <linux/pm.h>
23#include <linux/i2c.h>
24#include <linux/slab.h>
25#include <linux/platform_device.h>
26#include <linux/regmap.h>
27#include <sound/core.h>
28#include <sound/pcm.h>
29#include <sound/pcm_params.h>
30#include <sound/soc.h>
31#include <sound/tlv.h>
32#include "ml26124.h"
33
34#define DVOL_CTL_DVMUTE_ON BIT(4)
35#define DVOL_CTL_DVMUTE_OFF 0
36#define ML26124_SAI_NO_DELAY BIT(1)
37#define ML26124_SAI_FRAME_SYNC (BIT(5) | BIT(0))
38#define ML26134_CACHESIZE 212
39#define ML26124_VMID BIT(1)
40#define ML26124_RATES (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 |\
41 SNDRV_PCM_RATE_48000)
42#define ML26124_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |\
43 SNDRV_PCM_FMTBIT_S32_LE)
44#define ML26124_NUM_REGISTER ML26134_CACHESIZE
45
46struct ml26124_priv {
47 u32 mclk;
48 u32 rate;
49 struct regmap *regmap;
50 int clk_in;
51 struct snd_pcm_substream *substream;
52};
53
54struct clk_coeff {
55 u32 mclk;
56 u32 rate;
57 u8 pllnl;
58 u8 pllnh;
59 u8 pllml;
60 u8 pllmh;
61 u8 plldiv;
62};
63
64
65static const DECLARE_TLV_DB_SCALE(digital_tlv, -7150, 50, 0);
66
67static const DECLARE_TLV_DB_SCALE(alclvl, -2250, 150, 0);
68static const DECLARE_TLV_DB_SCALE(mingain, -1200, 600, 0);
69static const DECLARE_TLV_DB_SCALE(maxgain, -675, 600, 0);
70static const DECLARE_TLV_DB_SCALE(boost_vol, -1200, 75, 0);
71static const DECLARE_TLV_DB_SCALE(ngth, -7650, 150, 0);
72
73static const char * const ml26124_companding[] = {"16bit PCM", "u-law",
74 "A-law"};
75
76static SOC_ENUM_SINGLE_DECL(ml26124_adc_companding_enum,
77 ML26124_SAI_TRANS_CTL, 6, ml26124_companding);
78
79static SOC_ENUM_SINGLE_DECL(ml26124_dac_companding_enum,
80 ML26124_SAI_RCV_CTL, 6, ml26124_companding);
81
82static const struct snd_kcontrol_new ml26124_snd_controls[] = {
83 SOC_SINGLE_TLV("Capture Digital Volume", ML26124_RECORD_DIG_VOL, 0,
84 0xff, 1, digital_tlv),
85 SOC_SINGLE_TLV("Playback Digital Volume", ML26124_PLBAK_DIG_VOL, 0,
86 0xff, 1, digital_tlv),
87 SOC_SINGLE_TLV("Digital Boost Volume", ML26124_DIGI_BOOST_VOL, 0,
88 0x3f, 0, boost_vol),
89 SOC_SINGLE_TLV("EQ Band0 Volume", ML26124_EQ_GAIN_BRAND0, 0,
90 0xff, 1, digital_tlv),
91 SOC_SINGLE_TLV("EQ Band1 Volume", ML26124_EQ_GAIN_BRAND1, 0,
92 0xff, 1, digital_tlv),
93 SOC_SINGLE_TLV("EQ Band2 Volume", ML26124_EQ_GAIN_BRAND2, 0,
94 0xff, 1, digital_tlv),
95 SOC_SINGLE_TLV("EQ Band3 Volume", ML26124_EQ_GAIN_BRAND3, 0,
96 0xff, 1, digital_tlv),
97 SOC_SINGLE_TLV("EQ Band4 Volume", ML26124_EQ_GAIN_BRAND4, 0,
98 0xff, 1, digital_tlv),
99 SOC_SINGLE_TLV("ALC Target Level", ML26124_ALC_TARGET_LEV, 0,
100 0xf, 1, alclvl),
101 SOC_SINGLE_TLV("ALC Min Input Volume", ML26124_ALC_MAXMIN_GAIN, 0,
102 7, 0, mingain),
103 SOC_SINGLE_TLV("ALC Max Input Volume", ML26124_ALC_MAXMIN_GAIN, 4,
104 7, 1, maxgain),
105 SOC_SINGLE_TLV("Playback Limiter Min Input Volume",
106 ML26124_PL_MAXMIN_GAIN, 0, 7, 0, mingain),
107 SOC_SINGLE_TLV("Playback Limiter Max Input Volume",
108 ML26124_PL_MAXMIN_GAIN, 4, 7, 1, maxgain),
109 SOC_SINGLE_TLV("Playback Boost Volume", ML26124_PLYBAK_BOST_VOL, 0,
110 0x3f, 0, boost_vol),
111 SOC_SINGLE("DC High Pass Filter Switch", ML26124_FILTER_EN, 0, 1, 0),
112 SOC_SINGLE("Noise High Pass Filter Switch", ML26124_FILTER_EN, 1, 1, 0),
113 SOC_SINGLE("ZC Switch", ML26124_PW_ZCCMP_PW_MNG, 1,
114 1, 0),
115 SOC_SINGLE("EQ Band0 Switch", ML26124_FILTER_EN, 2, 1, 0),
116 SOC_SINGLE("EQ Band1 Switch", ML26124_FILTER_EN, 3, 1, 0),
117 SOC_SINGLE("EQ Band2 Switch", ML26124_FILTER_EN, 4, 1, 0),
118 SOC_SINGLE("EQ Band3 Switch", ML26124_FILTER_EN, 5, 1, 0),
119 SOC_SINGLE("EQ Band4 Switch", ML26124_FILTER_EN, 6, 1, 0),
120 SOC_SINGLE("Play Limiter", ML26124_DVOL_CTL, 0, 1, 0),
121 SOC_SINGLE("Capture Limiter", ML26124_DVOL_CTL, 1, 1, 0),
122 SOC_SINGLE("Digital Volume Fade Switch", ML26124_DVOL_CTL, 3, 1, 0),
123 SOC_SINGLE("Digital Switch", ML26124_DVOL_CTL, 4, 1, 0),
124 SOC_ENUM("DAC Companding", ml26124_dac_companding_enum),
125 SOC_ENUM("ADC Companding", ml26124_adc_companding_enum),
126};
127
128static const struct snd_kcontrol_new ml26124_output_mixer_controls[] = {
129 SOC_DAPM_SINGLE("DAC Switch", ML26124_SPK_AMP_OUT, 1, 1, 0),
130 SOC_DAPM_SINGLE("Line in loopback Switch", ML26124_SPK_AMP_OUT, 3, 1,
131 0),
132 SOC_DAPM_SINGLE("PGA Switch", ML26124_SPK_AMP_OUT, 5, 1, 0),
133};
134
135
136static const char * const ml26124_input_select[] = {"Analog MIC SingleEnded in",
137 "Digital MIC in", "Analog MIC Differential in"};
138
139static SOC_ENUM_SINGLE_DECL(ml26124_insel_enum,
140 ML26124_MIC_IF_CTL, 0, ml26124_input_select);
141
142static const struct snd_kcontrol_new ml26124_input_mux_controls =
143 SOC_DAPM_ENUM("Input Select", ml26124_insel_enum);
144
145static const struct snd_kcontrol_new ml26124_line_control =
146 SOC_DAPM_SINGLE("Switch", ML26124_PW_LOUT_PW_MNG, 1, 1, 0);
147
148static const struct snd_soc_dapm_widget ml26124_dapm_widgets[] = {
149 SND_SOC_DAPM_SUPPLY("MCLKEN", ML26124_CLK_EN, 0, 0, NULL, 0),
150 SND_SOC_DAPM_SUPPLY("PLLEN", ML26124_CLK_EN, 1, 0, NULL, 0),
151 SND_SOC_DAPM_SUPPLY("PLLOE", ML26124_CLK_EN, 2, 0, NULL, 0),
152 SND_SOC_DAPM_SUPPLY("MICBIAS", ML26124_PW_REF_PW_MNG, 2, 0, NULL, 0),
153 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
154 &ml26124_output_mixer_controls[0],
155 ARRAY_SIZE(ml26124_output_mixer_controls)),
156 SND_SOC_DAPM_DAC("DAC", "Playback", ML26124_PW_DAC_PW_MNG, 1, 0),
157 SND_SOC_DAPM_ADC("ADC", "Capture", ML26124_PW_IN_PW_MNG, 1, 0),
158 SND_SOC_DAPM_PGA("PGA", ML26124_PW_IN_PW_MNG, 3, 0, NULL, 0),
159 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
160 &ml26124_input_mux_controls),
161 SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
162 &ml26124_line_control),
163 SND_SOC_DAPM_INPUT("MDIN"),
164 SND_SOC_DAPM_INPUT("MIN"),
165 SND_SOC_DAPM_INPUT("LIN"),
166 SND_SOC_DAPM_OUTPUT("SPOUT"),
167 SND_SOC_DAPM_OUTPUT("LOUT"),
168};
169
170static const struct snd_soc_dapm_route ml26124_intercon[] = {
171
172 {"DAC", NULL, "MCLKEN"},
173 {"ADC", NULL, "MCLKEN"},
174 {"DAC", NULL, "PLLEN"},
175 {"ADC", NULL, "PLLEN"},
176 {"DAC", NULL, "PLLOE"},
177 {"ADC", NULL, "PLLOE"},
178
179
180 {"Output Mixer", "DAC Switch", "DAC"},
181 {"Output Mixer", "Line in loopback Switch", "LIN"},
182
183
184 {"LOUT", NULL, "Output Mixer"},
185 {"SPOUT", NULL, "Output Mixer"},
186 {"Line Out Enable", NULL, "LOUT"},
187
188
189 {"ADC", NULL, "Input Mux"},
190 {"Input Mux", "Analog MIC SingleEnded in", "PGA"},
191 {"Input Mux", "Analog MIC Differential in", "PGA"},
192 {"PGA", NULL, "MIN"},
193};
194
195
196static const struct clk_coeff coeff_div[] = {
197 {12288000, 16000, 0xc, 0x0, 0x20, 0x0, 0x4},
198 {12288000, 32000, 0xc, 0x0, 0x20, 0x0, 0x4},
199 {12288000, 48000, 0xc, 0x0, 0x30, 0x0, 0x4},
200};
201
202static struct reg_default ml26124_reg[] = {
203
204 {0x00, 0x00 },
205 {0x02, 0x00},
206 {0x04, 0x00},
207 {0x06, 0x00},
208 {0x08, 0x00},
209 {0x0a, 0x00},
210 {0x0c, 0x00},
211 {0x0e, 0x00},
212
213
214 {0x10, 0x00},
215 {0x12, 0x00},
216 {0x14, 0x00},
217
218
219 {0x20, 0x00},
220 {0x22, 0x00},
221 {0x24, 0x00},
222 {0x26, 0x00},
223 {0x28, 0x00},
224 {0x2a, 0x00},
225 {0x2e, 0x00},
226
227
228 {0x30, 0x04},
229
230
231 {0x32, 0x10},
232 {0x38, 0x00},
233 {0x3a, 0x33},
234 {0x48, 0x00},
235 {0x4a, 0x00},
236
237
238 {0x54, 0x00},
239 {0x5a, 0x00},
240 {0xe8, 0x01},
241
242
243 {0x60, 0x00},
244 {0x62, 0x00},
245 {0x64, 0x00},
246
247
248 {0x66, 0x01},
249 {0x68, 0x00},
250 {0x6A, 0x00},
251 {0x6C, 0xff},
252 {0x70, 0xff},
253 {0x72, 0x10},
254 {0x74, 0xe7},
255 {0x76, 0xe7},
256 {0x78, 0xe7},
257 {0x7A, 0xe7},
258 {0x7C, 0xe7},
259 {0x7E, 0x00},
260 {0x80, 0x00},
261 {0x82, 0x00},
262 {0x84, 0x00},
263 {0x86, 0x00},
264 {0x88, 0x00},
265 {0x8A, 0x00},
266 {0x8C, 0x00},
267 {0x8E, 0x00},
268 {0x90, 0x00},
269 {0x92, 0x00},
270 {0x94, 0x00},
271 {0x96, 0x00},
272 {0x98, 0x00},
273 {0x9A, 0x00},
274 {0x9C, 0x00},
275 {0x9E, 0x00},
276 {0xA0, 0x00},
277 {0xA2, 0x00},
278 {0xA4, 0x00},
279 {0xA6, 0x00},
280
281
282 {0xb0, 0x00},
283 {0xb2, 0x02},
284 {0xb4, 0x03},
285 {0xb6, 0x00},
286 {0xb8, 0x0b},
287 {0xba, 0x70},
288 {0xbc, 0x00},
289 {0xbe, 0x00},
290
291
292 {0xc0, 0x04},
293 {0xc2, 0x05},
294 {0xc4, 0x0d},
295 {0xc6, 0x70},
296 {0xc8, 0x10},
297 {0xca, 0x00},
298
299
300 {0xd0, 0x01},
301 {0xd2, 0x01},
302 {0xd4, 0x01},
303};
304
305
306static inline int get_srate(int rate)
307{
308 int srate;
309
310 switch (rate) {
311 case 16000:
312 srate = 3;
313 break;
314 case 32000:
315 srate = 6;
316 break;
317 case 48000:
318 srate = 8;
319 break;
320 default:
321 return -EINVAL;
322 }
323 return srate;
324}
325
326static inline int get_coeff(int mclk, int rate)
327{
328 int i;
329
330 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
331 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
332 return i;
333 }
334 return -EINVAL;
335}
336
337static int ml26124_hw_params(struct snd_pcm_substream *substream,
338 struct snd_pcm_hw_params *hw_params,
339 struct snd_soc_dai *dai)
340{
341 struct snd_soc_codec *codec = dai->codec;
342 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
343 int i = get_coeff(priv->mclk, params_rate(hw_params));
344
345 if (i < 0)
346 return i;
347 priv->substream = substream;
348 priv->rate = params_rate(hw_params);
349
350 if (priv->clk_in) {
351 switch (priv->mclk / params_rate(hw_params)) {
352 case 256:
353 snd_soc_update_bits(codec, ML26124_CLK_CTL,
354 BIT(0) | BIT(1), 1);
355 break;
356 case 512:
357 snd_soc_update_bits(codec, ML26124_CLK_CTL,
358 BIT(0) | BIT(1), 2);
359 break;
360 case 1024:
361 snd_soc_update_bits(codec, ML26124_CLK_CTL,
362 BIT(0) | BIT(1), 3);
363 break;
364 default:
365 dev_err(codec->dev, "Unsupported MCLKI\n");
366 break;
367 }
368 } else {
369 snd_soc_update_bits(codec, ML26124_CLK_CTL,
370 BIT(0) | BIT(1), 0);
371 }
372
373 switch (params_rate(hw_params)) {
374 case 16000:
375 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf,
376 get_srate(params_rate(hw_params)));
377 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff,
378 coeff_div[i].pllnl);
379 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1,
380 coeff_div[i].pllnh);
381 snd_soc_update_bits(codec, ML26124_PLLML, 0xff,
382 coeff_div[i].pllml);
383 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f,
384 coeff_div[i].pllmh);
385 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f,
386 coeff_div[i].plldiv);
387 break;
388 case 32000:
389 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf,
390 get_srate(params_rate(hw_params)));
391 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff,
392 coeff_div[i].pllnl);
393 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1,
394 coeff_div[i].pllnh);
395 snd_soc_update_bits(codec, ML26124_PLLML, 0xff,
396 coeff_div[i].pllml);
397 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f,
398 coeff_div[i].pllmh);
399 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f,
400 coeff_div[i].plldiv);
401 break;
402 case 48000:
403 snd_soc_update_bits(codec, ML26124_SMPLING_RATE, 0xf,
404 get_srate(params_rate(hw_params)));
405 snd_soc_update_bits(codec, ML26124_PLLNL, 0xff,
406 coeff_div[i].pllnl);
407 snd_soc_update_bits(codec, ML26124_PLLNH, 0x1,
408 coeff_div[i].pllnh);
409 snd_soc_update_bits(codec, ML26124_PLLML, 0xff,
410 coeff_div[i].pllml);
411 snd_soc_update_bits(codec, ML26124_PLLMH, 0x3f,
412 coeff_div[i].pllmh);
413 snd_soc_update_bits(codec, ML26124_PLLDIV, 0x1f,
414 coeff_div[i].plldiv);
415 break;
416 default:
417 pr_err("%s:this rate is no support for ml26124\n", __func__);
418 return -EINVAL;
419 }
420
421 return 0;
422}
423
424static int ml26124_mute(struct snd_soc_dai *dai, int mute)
425{
426 struct snd_soc_codec *codec = dai->codec;
427 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
428
429 switch (priv->substream->stream) {
430 case SNDRV_PCM_STREAM_CAPTURE:
431 snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(0), 1);
432 break;
433 case SNDRV_PCM_STREAM_PLAYBACK:
434 snd_soc_update_bits(codec, ML26124_REC_PLYBAK_RUN, BIT(1), 2);
435 break;
436 }
437
438 if (mute)
439 snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4),
440 DVOL_CTL_DVMUTE_ON);
441 else
442 snd_soc_update_bits(codec, ML26124_DVOL_CTL, BIT(4),
443 DVOL_CTL_DVMUTE_OFF);
444
445 return 0;
446}
447
448static int ml26124_set_dai_fmt(struct snd_soc_dai *codec_dai,
449 unsigned int fmt)
450{
451 unsigned char mode;
452 struct snd_soc_codec *codec = codec_dai->codec;
453
454
455 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
456 case SND_SOC_DAIFMT_CBM_CFM:
457 mode = 1;
458 break;
459 case SND_SOC_DAIFMT_CBS_CFS:
460 mode = 0;
461 break;
462 default:
463 return -EINVAL;
464 }
465 snd_soc_update_bits(codec, ML26124_SAI_MODE_SEL, BIT(0), mode);
466
467
468 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
469 case SND_SOC_DAIFMT_I2S:
470 break;
471 default:
472 return -EINVAL;
473 }
474
475
476 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
477 case SND_SOC_DAIFMT_NB_NF:
478 break;
479 default:
480 return -EINVAL;
481 }
482
483 return 0;
484}
485
486static int ml26124_set_dai_sysclk(struct snd_soc_dai *codec_dai,
487 int clk_id, unsigned int freq, int dir)
488{
489 struct snd_soc_codec *codec = codec_dai->codec;
490 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
491
492 switch (clk_id) {
493 case ML26124_USE_PLLOUT:
494 priv->clk_in = ML26124_USE_PLLOUT;
495 break;
496 case ML26124_USE_MCLKI:
497 priv->clk_in = ML26124_USE_MCLKI;
498 break;
499 default:
500 return -EINVAL;
501 }
502
503 priv->mclk = freq;
504
505 return 0;
506}
507
508static int ml26124_set_bias_level(struct snd_soc_codec *codec,
509 enum snd_soc_bias_level level)
510{
511 struct ml26124_priv *priv = snd_soc_codec_get_drvdata(codec);
512
513 switch (level) {
514 case SND_SOC_BIAS_ON:
515 snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG,
516 ML26124_R26_MASK, ML26124_BLT_PREAMP_ON);
517 msleep(100);
518 snd_soc_update_bits(codec, ML26124_PW_SPAMP_PW_MNG,
519 ML26124_R26_MASK,
520 ML26124_MICBEN_ON | ML26124_BLT_ALL_ON);
521 break;
522 case SND_SOC_BIAS_PREPARE:
523 break;
524 case SND_SOC_BIAS_STANDBY:
525
526 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
527 snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG,
528 ML26124_VMID, ML26124_VMID);
529 msleep(500);
530 regcache_sync(priv->regmap);
531 }
532 break;
533 case SND_SOC_BIAS_OFF:
534
535 snd_soc_update_bits(codec, ML26124_PW_REF_PW_MNG,
536 ML26124_VMID, 0);
537 break;
538 }
539 codec->dapm.bias_level = level;
540 return 0;
541}
542
543static const struct snd_soc_dai_ops ml26124_dai_ops = {
544 .hw_params = ml26124_hw_params,
545 .digital_mute = ml26124_mute,
546 .set_fmt = ml26124_set_dai_fmt,
547 .set_sysclk = ml26124_set_dai_sysclk,
548};
549
550static struct snd_soc_dai_driver ml26124_dai = {
551 .name = "ml26124-hifi",
552 .playback = {
553 .stream_name = "Playback",
554 .channels_min = 1,
555 .channels_max = 2,
556 .rates = ML26124_RATES,
557 .formats = ML26124_FORMATS,},
558 .capture = {
559 .stream_name = "Capture",
560 .channels_min = 1,
561 .channels_max = 2,
562 .rates = ML26124_RATES,
563 .formats = ML26124_FORMATS,},
564 .ops = &ml26124_dai_ops,
565 .symmetric_rates = 1,
566};
567
568#ifdef CONFIG_PM
569static int ml26124_suspend(struct snd_soc_codec *codec)
570{
571 ml26124_set_bias_level(codec, SND_SOC_BIAS_OFF);
572
573 return 0;
574}
575
576static int ml26124_resume(struct snd_soc_codec *codec)
577{
578 ml26124_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
579
580 return 0;
581}
582#else
583#define ml26124_suspend NULL
584#define ml26124_resume NULL
585#endif
586
587static int ml26124_probe(struct snd_soc_codec *codec)
588{
589
590 snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 1);
591 snd_soc_update_bits(codec, ML26124_SW_RST, 0x01, 0);
592
593 ml26124_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
594
595 return 0;
596}
597
598static struct snd_soc_codec_driver soc_codec_dev_ml26124 = {
599 .probe = ml26124_probe,
600 .suspend = ml26124_suspend,
601 .resume = ml26124_resume,
602 .set_bias_level = ml26124_set_bias_level,
603 .dapm_widgets = ml26124_dapm_widgets,
604 .num_dapm_widgets = ARRAY_SIZE(ml26124_dapm_widgets),
605 .dapm_routes = ml26124_intercon,
606 .num_dapm_routes = ARRAY_SIZE(ml26124_intercon),
607 .controls = ml26124_snd_controls,
608 .num_controls = ARRAY_SIZE(ml26124_snd_controls),
609};
610
611static const struct regmap_config ml26124_i2c_regmap = {
612 .val_bits = 8,
613 .reg_bits = 8,
614 .max_register = ML26124_NUM_REGISTER,
615 .reg_defaults = ml26124_reg,
616 .num_reg_defaults = ARRAY_SIZE(ml26124_reg),
617 .cache_type = REGCACHE_RBTREE,
618 .write_flag_mask = 0x01,
619};
620
621static int ml26124_i2c_probe(struct i2c_client *i2c,
622 const struct i2c_device_id *id)
623{
624 struct ml26124_priv *priv;
625 int ret;
626
627 priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
628 if (!priv)
629 return -ENOMEM;
630
631 i2c_set_clientdata(i2c, priv);
632
633 priv->regmap = devm_regmap_init_i2c(i2c, &ml26124_i2c_regmap);
634 if (IS_ERR(priv->regmap)) {
635 ret = PTR_ERR(priv->regmap);
636 dev_err(&i2c->dev, "regmap_init_i2c() failed: %d\n", ret);
637 return ret;
638 }
639
640 return snd_soc_register_codec(&i2c->dev,
641 &soc_codec_dev_ml26124, &ml26124_dai, 1);
642}
643
644static int ml26124_i2c_remove(struct i2c_client *client)
645{
646 snd_soc_unregister_codec(&client->dev);
647 return 0;
648}
649
650static const struct i2c_device_id ml26124_i2c_id[] = {
651 { "ml26124", 0 },
652 { }
653};
654MODULE_DEVICE_TABLE(i2c, ml26124_i2c_id);
655
656static struct i2c_driver ml26124_i2c_driver = {
657 .driver = {
658 .name = "ml26124",
659 .owner = THIS_MODULE,
660 },
661 .probe = ml26124_i2c_probe,
662 .remove = ml26124_i2c_remove,
663 .id_table = ml26124_i2c_id,
664};
665
666module_i2c_driver(ml26124_i2c_driver);
667
668MODULE_AUTHOR("Tomoya MORINAGA <tomoya.rohm@gmail.com>");
669MODULE_DESCRIPTION("LAPIS Semiconductor ML26124 ALSA SoC codec driver");
670MODULE_LICENSE("GPL");
671
