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3b2af7f7 PR |
1 | /* |
2 | * Driver for the MAX9860 Mono Audio Voice Codec | |
3 | * | |
4 | * https://datasheets.maximintegrated.com/en/ds/MAX9860.pdf | |
5 | * | |
6 | * The driver does not support sidetone since the DVST register field is | |
7 | * backwards with the mute near the maximum level instead of the minimum. | |
8 | * | |
9 | * Author: Peter Rosin <peda@axentia.s> | |
10 | * Copyright 2016 Axentia Technologies | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License | |
14 | * version 2 as published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | */ | |
21 | ||
22 | #include <linux/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/clk.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/pm_runtime.h> | |
27 | #include <linux/regmap.h> | |
28 | #include <linux/i2c.h> | |
29 | #include <linux/regulator/consumer.h> | |
30 | #include <sound/soc.h> | |
31 | #include <sound/soc-dapm.h> | |
32 | #include <sound/pcm_params.h> | |
33 | #include <sound/tlv.h> | |
34 | ||
35 | #include "max9860.h" | |
36 | ||
37 | struct max9860_priv { | |
38 | struct regmap *regmap; | |
39 | struct regulator *dvddio; | |
40 | struct notifier_block dvddio_nb; | |
41 | u8 psclk; | |
42 | unsigned long pclk_rate; | |
43 | int fmt; | |
44 | }; | |
45 | ||
46 | static int max9860_dvddio_event(struct notifier_block *nb, | |
47 | unsigned long event, void *data) | |
48 | { | |
49 | struct max9860_priv *max9860 = container_of(nb, struct max9860_priv, | |
50 | dvddio_nb); | |
51 | if (event & REGULATOR_EVENT_DISABLE) { | |
52 | regcache_mark_dirty(max9860->regmap); | |
53 | regcache_cache_only(max9860->regmap, true); | |
54 | } | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static const struct reg_default max9860_reg_defaults[] = { | |
60 | { MAX9860_PWRMAN, 0x00 }, | |
61 | { MAX9860_INTEN, 0x00 }, | |
62 | { MAX9860_SYSCLK, 0x00 }, | |
63 | { MAX9860_AUDIOCLKHIGH, 0x00 }, | |
64 | { MAX9860_AUDIOCLKLOW, 0x00 }, | |
65 | { MAX9860_IFC1A, 0x00 }, | |
66 | { MAX9860_IFC1B, 0x00 }, | |
67 | { MAX9860_VOICEFLTR, 0x00 }, | |
68 | { MAX9860_DACATTN, 0x00 }, | |
69 | { MAX9860_ADCLEVEL, 0x00 }, | |
70 | { MAX9860_DACGAIN, 0x00 }, | |
71 | { MAX9860_MICGAIN, 0x00 }, | |
72 | { MAX9860_MICADC, 0x00 }, | |
73 | { MAX9860_NOISEGATE, 0x00 }, | |
74 | }; | |
75 | ||
76 | static bool max9860_readable(struct device *dev, unsigned int reg) | |
77 | { | |
78 | switch (reg) { | |
79 | case MAX9860_INTRSTATUS ... MAX9860_MICGAIN: | |
80 | case MAX9860_MICADC ... MAX9860_PWRMAN: | |
81 | case MAX9860_REVISION: | |
82 | return true; | |
83 | } | |
84 | ||
85 | return false; | |
86 | } | |
87 | ||
88 | static bool max9860_writeable(struct device *dev, unsigned int reg) | |
89 | { | |
90 | switch (reg) { | |
91 | case MAX9860_INTEN ... MAX9860_MICGAIN: | |
92 | case MAX9860_MICADC ... MAX9860_PWRMAN: | |
93 | return true; | |
94 | } | |
95 | ||
96 | return false; | |
97 | } | |
98 | ||
99 | static bool max9860_volatile(struct device *dev, unsigned int reg) | |
100 | { | |
101 | switch (reg) { | |
102 | case MAX9860_INTRSTATUS: | |
103 | case MAX9860_MICREADBACK: | |
104 | return true; | |
105 | } | |
106 | ||
107 | return false; | |
108 | } | |
109 | ||
110 | static bool max9860_precious(struct device *dev, unsigned int reg) | |
111 | { | |
112 | switch (reg) { | |
113 | case MAX9860_INTRSTATUS: | |
114 | return true; | |
115 | } | |
116 | ||
117 | return false; | |
118 | } | |
119 | ||
716540fd | 120 | static const struct regmap_config max9860_regmap = { |
3b2af7f7 PR |
121 | .reg_bits = 8, |
122 | .val_bits = 8, | |
123 | ||
124 | .readable_reg = max9860_readable, | |
125 | .writeable_reg = max9860_writeable, | |
126 | .volatile_reg = max9860_volatile, | |
127 | .precious_reg = max9860_precious, | |
128 | ||
129 | .max_register = MAX9860_MAX_REGISTER, | |
130 | .reg_defaults = max9860_reg_defaults, | |
131 | .num_reg_defaults = ARRAY_SIZE(max9860_reg_defaults), | |
132 | .cache_type = REGCACHE_RBTREE, | |
133 | }; | |
134 | ||
135 | static const DECLARE_TLV_DB_SCALE(dva_tlv, -9100, 100, 1); | |
136 | static const DECLARE_TLV_DB_SCALE(dvg_tlv, 0, 600, 0); | |
137 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0); | |
138 | static const DECLARE_TLV_DB_RANGE(pam_tlv, | |
139 | 0, MAX9860_PAM_MAX - 1, TLV_DB_SCALE_ITEM(-2000, 2000, 1), | |
140 | MAX9860_PAM_MAX, MAX9860_PAM_MAX, TLV_DB_SCALE_ITEM(3000, 0, 0)); | |
141 | static const DECLARE_TLV_DB_SCALE(pgam_tlv, 0, 100, 0); | |
142 | static const DECLARE_TLV_DB_SCALE(anth_tlv, -7600, 400, 1); | |
143 | static const DECLARE_TLV_DB_SCALE(agcth_tlv, -1800, 100, 0); | |
144 | ||
145 | static const char * const agchld_text[] = { | |
146 | "AGC Disabled", "50ms", "100ms", "400ms" | |
147 | }; | |
148 | ||
149 | static SOC_ENUM_SINGLE_DECL(agchld_enum, MAX9860_MICADC, | |
150 | MAX9860_AGCHLD_SHIFT, agchld_text); | |
151 | ||
152 | static const char * const agcsrc_text[] = { | |
153 | "Left ADC", "Left/Right ADC" | |
154 | }; | |
155 | ||
156 | static SOC_ENUM_SINGLE_DECL(agcsrc_enum, MAX9860_MICADC, | |
157 | MAX9860_AGCSRC_SHIFT, agcsrc_text); | |
158 | ||
159 | static const char * const agcatk_text[] = { | |
160 | "3ms", "12ms", "50ms", "200ms" | |
161 | }; | |
162 | ||
163 | static SOC_ENUM_SINGLE_DECL(agcatk_enum, MAX9860_MICADC, | |
164 | MAX9860_AGCATK_SHIFT, agcatk_text); | |
165 | ||
166 | static const char * const agcrls_text[] = { | |
167 | "78ms", "156ms", "312ms", "625ms", | |
168 | "1.25s", "2.5s", "5s", "10s" | |
169 | }; | |
170 | ||
171 | static SOC_ENUM_SINGLE_DECL(agcrls_enum, MAX9860_MICADC, | |
172 | MAX9860_AGCRLS_SHIFT, agcrls_text); | |
173 | ||
174 | static const char * const filter_text[] = { | |
175 | "Disabled", | |
176 | "Elliptical HP 217Hz notch (16kHz)", | |
177 | "Butterworth HP 500Hz (16kHz)", | |
178 | "Elliptical HP 217Hz notch (8kHz)", | |
179 | "Butterworth HP 500Hz (8kHz)", | |
180 | "Butterworth HP 200Hz (48kHz)" | |
181 | }; | |
182 | ||
183 | static SOC_ENUM_SINGLE_DECL(avflt_enum, MAX9860_VOICEFLTR, | |
184 | MAX9860_AVFLT_SHIFT, filter_text); | |
185 | ||
186 | static SOC_ENUM_SINGLE_DECL(dvflt_enum, MAX9860_VOICEFLTR, | |
187 | MAX9860_DVFLT_SHIFT, filter_text); | |
188 | ||
189 | static const struct snd_kcontrol_new max9860_controls[] = { | |
190 | SOC_SINGLE_TLV("Master Playback Volume", MAX9860_DACATTN, | |
191 | MAX9860_DVA_SHIFT, MAX9860_DVA_MUTE, 1, dva_tlv), | |
192 | SOC_SINGLE_TLV("DAC Gain Volume", MAX9860_DACGAIN, | |
193 | MAX9860_DVG_SHIFT, MAX9860_DVG_MAX, 0, dvg_tlv), | |
194 | SOC_DOUBLE_TLV("Line Capture Volume", MAX9860_ADCLEVEL, | |
195 | MAX9860_ADCLL_SHIFT, MAX9860_ADCRL_SHIFT, MAX9860_ADCxL_MIN, 1, | |
196 | adc_tlv), | |
197 | ||
198 | SOC_ENUM("AGC Hold Time", agchld_enum), | |
199 | SOC_ENUM("AGC/Noise Gate Source", agcsrc_enum), | |
200 | SOC_ENUM("AGC Attack Time", agcatk_enum), | |
201 | SOC_ENUM("AGC Release Time", agcrls_enum), | |
202 | ||
203 | SOC_SINGLE_TLV("Noise Gate Threshold Volume", MAX9860_NOISEGATE, | |
204 | MAX9860_ANTH_SHIFT, MAX9860_ANTH_MAX, 0, anth_tlv), | |
205 | SOC_SINGLE_TLV("AGC Signal Threshold Volume", MAX9860_NOISEGATE, | |
206 | MAX9860_AGCTH_SHIFT, MAX9860_AGCTH_MIN, 1, agcth_tlv), | |
207 | ||
208 | SOC_SINGLE_TLV("Mic PGA Volume", MAX9860_MICGAIN, | |
209 | MAX9860_PGAM_SHIFT, MAX9860_PGAM_MIN, 1, pgam_tlv), | |
210 | SOC_SINGLE_TLV("Mic Preamp Volume", MAX9860_MICGAIN, | |
211 | MAX9860_PAM_SHIFT, MAX9860_PAM_MAX, 0, pam_tlv), | |
212 | ||
213 | SOC_ENUM("ADC Filter", avflt_enum), | |
214 | SOC_ENUM("DAC Filter", dvflt_enum), | |
215 | }; | |
216 | ||
217 | static const struct snd_soc_dapm_widget max9860_dapm_widgets[] = { | |
218 | SND_SOC_DAPM_INPUT("MICL"), | |
219 | SND_SOC_DAPM_INPUT("MICR"), | |
220 | ||
221 | SND_SOC_DAPM_ADC("ADCL", NULL, MAX9860_PWRMAN, MAX9860_ADCLEN_SHIFT, 0), | |
222 | SND_SOC_DAPM_ADC("ADCR", NULL, MAX9860_PWRMAN, MAX9860_ADCREN_SHIFT, 0), | |
223 | ||
224 | SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0), | |
225 | SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0), | |
226 | ||
227 | SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0), | |
228 | SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0), | |
229 | ||
230 | SND_SOC_DAPM_DAC("DAC", NULL, MAX9860_PWRMAN, MAX9860_DACEN_SHIFT, 0), | |
231 | ||
232 | SND_SOC_DAPM_OUTPUT("OUT"), | |
233 | ||
234 | SND_SOC_DAPM_SUPPLY("Supply", SND_SOC_NOPM, 0, 0, | |
235 | NULL, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), | |
236 | SND_SOC_DAPM_REGULATOR_SUPPLY("AVDD", 0, 0), | |
237 | SND_SOC_DAPM_REGULATOR_SUPPLY("DVDD", 0, 0), | |
238 | SND_SOC_DAPM_CLOCK_SUPPLY("mclk"), | |
239 | }; | |
240 | ||
241 | static const struct snd_soc_dapm_route max9860_dapm_routes[] = { | |
242 | { "ADCL", NULL, "MICL" }, | |
243 | { "ADCR", NULL, "MICR" }, | |
244 | { "AIFOUTL", NULL, "ADCL" }, | |
245 | { "AIFOUTR", NULL, "ADCR" }, | |
246 | ||
247 | { "DAC", NULL, "AIFINL" }, | |
248 | { "DAC", NULL, "AIFINR" }, | |
249 | { "OUT", NULL, "DAC" }, | |
250 | ||
251 | { "Supply", NULL, "AVDD" }, | |
252 | { "Supply", NULL, "DVDD" }, | |
253 | { "Supply", NULL, "mclk" }, | |
254 | ||
255 | { "DAC", NULL, "Supply" }, | |
256 | { "ADCL", NULL, "Supply" }, | |
257 | { "ADCR", NULL, "Supply" }, | |
258 | }; | |
259 | ||
260 | static int max9860_hw_params(struct snd_pcm_substream *substream, | |
261 | struct snd_pcm_hw_params *params, | |
262 | struct snd_soc_dai *dai) | |
263 | { | |
264 | struct snd_soc_codec *codec = dai->codec; | |
265 | struct max9860_priv *max9860 = snd_soc_codec_get_drvdata(codec); | |
266 | u8 master; | |
267 | u8 ifc1a = 0; | |
268 | u8 ifc1b = 0; | |
269 | u8 sysclk = 0; | |
270 | unsigned long n; | |
271 | int ret; | |
272 | ||
273 | dev_dbg(codec->dev, "hw_params %u Hz, %u channels\n", | |
274 | params_rate(params), | |
275 | params_channels(params)); | |
276 | ||
277 | if (params_channels(params) == 2) | |
278 | ifc1b |= MAX9860_ST; | |
279 | ||
280 | switch (max9860->fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
281 | case SND_SOC_DAIFMT_CBS_CFS: | |
282 | master = 0; | |
283 | break; | |
284 | case SND_SOC_DAIFMT_CBM_CFM: | |
285 | master = MAX9860_MASTER; | |
286 | break; | |
287 | default: | |
288 | return -EINVAL; | |
289 | } | |
290 | ifc1a |= master; | |
291 | ||
292 | if (master) { | |
293 | if (params_width(params) * params_channels(params) > 48) | |
294 | ifc1b |= MAX9860_BSEL_64X; | |
295 | else | |
296 | ifc1b |= MAX9860_BSEL_48X; | |
297 | } | |
298 | ||
299 | switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
300 | case SND_SOC_DAIFMT_I2S: | |
301 | ifc1a |= MAX9860_DDLY; | |
302 | ifc1b |= MAX9860_ADLY; | |
303 | break; | |
304 | case SND_SOC_DAIFMT_LEFT_J: | |
305 | ifc1a |= MAX9860_WCI; | |
306 | break; | |
307 | case SND_SOC_DAIFMT_DSP_A: | |
308 | if (params_width(params) != 16) { | |
309 | dev_err(codec->dev, | |
310 | "DSP_A works for 16 bits per sample only.\n"); | |
311 | return -EINVAL; | |
312 | } | |
313 | ifc1a |= MAX9860_DDLY | MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM; | |
314 | ifc1b |= MAX9860_ADLY; | |
315 | break; | |
316 | case SND_SOC_DAIFMT_DSP_B: | |
317 | if (params_width(params) != 16) { | |
318 | dev_err(codec->dev, | |
319 | "DSP_B works for 16 bits per sample only.\n"); | |
320 | return -EINVAL; | |
321 | } | |
322 | ifc1a |= MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM; | |
323 | break; | |
324 | default: | |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | switch (max9860->fmt & SND_SOC_DAIFMT_INV_MASK) { | |
329 | case SND_SOC_DAIFMT_NB_NF: | |
330 | break; | |
331 | case SND_SOC_DAIFMT_NB_IF: | |
332 | switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
333 | case SND_SOC_DAIFMT_DSP_A: | |
334 | case SND_SOC_DAIFMT_DSP_B: | |
335 | return -EINVAL; | |
336 | } | |
337 | ifc1a ^= MAX9860_WCI; | |
338 | break; | |
339 | case SND_SOC_DAIFMT_IB_IF: | |
340 | switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
341 | case SND_SOC_DAIFMT_DSP_A: | |
342 | case SND_SOC_DAIFMT_DSP_B: | |
343 | return -EINVAL; | |
344 | } | |
345 | ifc1a ^= MAX9860_WCI; | |
346 | /* fall through */ | |
347 | case SND_SOC_DAIFMT_IB_NF: | |
348 | ifc1a ^= MAX9860_DBCI; | |
349 | ifc1b ^= MAX9860_ABCI; | |
350 | break; | |
351 | default: | |
352 | return -EINVAL; | |
353 | } | |
354 | ||
355 | dev_dbg(codec->dev, "IFC1A %02x\n", ifc1a); | |
356 | ret = regmap_write(max9860->regmap, MAX9860_IFC1A, ifc1a); | |
357 | if (ret) { | |
358 | dev_err(codec->dev, "Failed to set IFC1A: %d\n", ret); | |
359 | return ret; | |
360 | } | |
361 | dev_dbg(codec->dev, "IFC1B %02x\n", ifc1b); | |
362 | ret = regmap_write(max9860->regmap, MAX9860_IFC1B, ifc1b); | |
363 | if (ret) { | |
364 | dev_err(codec->dev, "Failed to set IFC1B: %d\n", ret); | |
365 | return ret; | |
366 | } | |
367 | ||
368 | /* | |
369 | * Check if Integer Clock Mode is possible, but avoid it in slave mode | |
370 | * since we then do not know if lrclk is derived from pclk and the | |
371 | * datasheet mentions that the frequencies have to match exactly in | |
372 | * order for this to work. | |
373 | */ | |
374 | if (params_rate(params) == 8000 || params_rate(params) == 16000) { | |
375 | if (master) { | |
376 | switch (max9860->pclk_rate) { | |
377 | case 12000000: | |
378 | sysclk = MAX9860_FREQ_12MHZ; | |
379 | break; | |
380 | case 13000000: | |
381 | sysclk = MAX9860_FREQ_13MHZ; | |
382 | break; | |
383 | case 19200000: | |
384 | sysclk = MAX9860_FREQ_19_2MHZ; | |
385 | break; | |
386 | default: | |
387 | /* | |
388 | * Integer Clock Mode not possible. Leave | |
389 | * sysclk at zero and fall through to the | |
390 | * code below for PLL mode. | |
391 | */ | |
392 | break; | |
393 | } | |
394 | ||
395 | if (sysclk && params_rate(params) == 16000) | |
396 | sysclk |= MAX9860_16KHZ; | |
397 | } | |
398 | } | |
399 | ||
400 | /* | |
401 | * Largest possible n: | |
402 | * 65536 * 96 * 48kHz / 10MHz -> 30199 | |
403 | * Smallest possible n: | |
404 | * 65536 * 96 * 8kHz / 20MHz -> 2517 | |
405 | * Both fit nicely in the available 15 bits, no need to apply any mask. | |
406 | */ | |
407 | n = DIV_ROUND_CLOSEST_ULL(65536ULL * 96 * params_rate(params), | |
408 | max9860->pclk_rate); | |
409 | ||
410 | if (!sysclk) { | |
411 | /* PLL mode */ | |
412 | if (params_rate(params) > 24000) | |
413 | sysclk |= MAX9860_16KHZ; | |
414 | ||
415 | if (!master) | |
416 | n |= 1; /* trigger rapid pll lock mode */ | |
417 | } | |
418 | ||
419 | sysclk |= max9860->psclk; | |
420 | dev_dbg(codec->dev, "SYSCLK %02x\n", sysclk); | |
421 | ret = regmap_write(max9860->regmap, | |
422 | MAX9860_SYSCLK, sysclk); | |
423 | if (ret) { | |
424 | dev_err(codec->dev, "Failed to set SYSCLK: %d\n", ret); | |
425 | return ret; | |
426 | } | |
427 | dev_dbg(codec->dev, "N %lu\n", n); | |
428 | ret = regmap_write(max9860->regmap, | |
429 | MAX9860_AUDIOCLKHIGH, n >> 8); | |
430 | if (ret) { | |
431 | dev_err(codec->dev, "Failed to set NHI: %d\n", ret); | |
432 | return ret; | |
433 | } | |
434 | ret = regmap_write(max9860->regmap, | |
435 | MAX9860_AUDIOCLKLOW, n & 0xff); | |
436 | if (ret) { | |
437 | dev_err(codec->dev, "Failed to set NLO: %d\n", ret); | |
438 | return ret; | |
439 | } | |
440 | ||
441 | if (!master) { | |
442 | dev_dbg(codec->dev, "Enable PLL\n"); | |
443 | ret = regmap_update_bits(max9860->regmap, MAX9860_AUDIOCLKHIGH, | |
444 | MAX9860_PLL, MAX9860_PLL); | |
445 | if (ret) { | |
446 | dev_err(codec->dev, "Failed to enable PLL: %d\n", ret); | |
447 | return ret; | |
448 | } | |
449 | } | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | static int max9860_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
455 | { | |
456 | struct snd_soc_codec *codec = dai->codec; | |
457 | struct max9860_priv *max9860 = snd_soc_codec_get_drvdata(codec); | |
458 | ||
459 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
460 | case SND_SOC_DAIFMT_CBM_CFM: | |
461 | case SND_SOC_DAIFMT_CBS_CFS: | |
462 | max9860->fmt = fmt; | |
463 | return 0; | |
464 | ||
465 | default: | |
466 | return -EINVAL; | |
467 | } | |
468 | } | |
469 | ||
470 | static const struct snd_soc_dai_ops max9860_dai_ops = { | |
471 | .hw_params = max9860_hw_params, | |
472 | .set_fmt = max9860_set_fmt, | |
473 | }; | |
474 | ||
475 | static struct snd_soc_dai_driver max9860_dai = { | |
476 | .name = "max9860-hifi", | |
477 | .playback = { | |
478 | .stream_name = "Playback", | |
479 | .channels_min = 1, | |
480 | .channels_max = 2, | |
481 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
482 | .rate_min = 8000, | |
483 | .rate_max = 48000, | |
484 | .formats = SNDRV_PCM_FMTBIT_S16_LE | | |
485 | SNDRV_PCM_FMTBIT_S24_LE | | |
486 | SNDRV_PCM_FMTBIT_S32_LE, | |
487 | }, | |
488 | .capture = { | |
489 | .stream_name = "Capture", | |
490 | .channels_min = 1, | |
491 | .channels_max = 2, | |
492 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
493 | .rate_min = 8000, | |
494 | .rate_max = 48000, | |
495 | .formats = SNDRV_PCM_FMTBIT_S16_LE | | |
496 | SNDRV_PCM_FMTBIT_S24_LE | | |
497 | SNDRV_PCM_FMTBIT_S32_LE, | |
498 | }, | |
499 | .ops = &max9860_dai_ops, | |
500 | .symmetric_rates = 1, | |
501 | }; | |
502 | ||
503 | static int max9860_set_bias_level(struct snd_soc_codec *codec, | |
504 | enum snd_soc_bias_level level) | |
505 | { | |
506 | struct max9860_priv *max9860 = dev_get_drvdata(codec->dev); | |
507 | int ret; | |
508 | ||
509 | switch (level) { | |
510 | case SND_SOC_BIAS_ON: | |
511 | case SND_SOC_BIAS_PREPARE: | |
512 | break; | |
513 | ||
514 | case SND_SOC_BIAS_STANDBY: | |
515 | ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN, | |
516 | MAX9860_SHDN, MAX9860_SHDN); | |
517 | if (ret) { | |
518 | dev_err(codec->dev, "Failed to remove SHDN: %d\n", ret); | |
519 | return ret; | |
520 | } | |
521 | break; | |
522 | ||
523 | case SND_SOC_BIAS_OFF: | |
524 | ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN, | |
525 | MAX9860_SHDN, 0); | |
526 | if (ret) { | |
527 | dev_err(codec->dev, "Failed to request SHDN: %d\n", | |
528 | ret); | |
529 | return ret; | |
530 | } | |
531 | break; | |
532 | } | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
537 | static struct snd_soc_codec_driver max9860_codec_driver = { | |
538 | .set_bias_level = max9860_set_bias_level, | |
539 | .idle_bias_off = true, | |
540 | ||
541 | .controls = max9860_controls, | |
542 | .num_controls = ARRAY_SIZE(max9860_controls), | |
543 | .dapm_widgets = max9860_dapm_widgets, | |
544 | .num_dapm_widgets = ARRAY_SIZE(max9860_dapm_widgets), | |
545 | .dapm_routes = max9860_dapm_routes, | |
546 | .num_dapm_routes = ARRAY_SIZE(max9860_dapm_routes), | |
547 | }; | |
548 | ||
549 | #ifdef CONFIG_PM | |
550 | static int max9860_suspend(struct device *dev) | |
551 | { | |
552 | struct max9860_priv *max9860 = dev_get_drvdata(dev); | |
553 | int ret; | |
554 | ||
555 | ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK, | |
556 | MAX9860_PSCLK, MAX9860_PSCLK_OFF); | |
557 | if (ret) { | |
558 | dev_err(dev, "Failed to disable clock: %d\n", ret); | |
559 | return ret; | |
560 | } | |
561 | ||
562 | regulator_disable(max9860->dvddio); | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | static int max9860_resume(struct device *dev) | |
568 | { | |
569 | struct max9860_priv *max9860 = dev_get_drvdata(dev); | |
570 | int ret; | |
571 | ||
572 | ret = regulator_enable(max9860->dvddio); | |
573 | if (ret) { | |
574 | dev_err(dev, "Failed to enable DVDDIO: %d\n", ret); | |
575 | return ret; | |
576 | } | |
577 | ||
578 | regcache_cache_only(max9860->regmap, false); | |
579 | ret = regcache_sync(max9860->regmap); | |
580 | if (ret) { | |
581 | dev_err(dev, "Failed to sync cache: %d\n", ret); | |
582 | return ret; | |
583 | } | |
584 | ||
585 | ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK, | |
586 | MAX9860_PSCLK, max9860->psclk); | |
587 | if (ret) { | |
588 | dev_err(dev, "Failed to enable clock: %d\n", ret); | |
589 | return ret; | |
590 | } | |
591 | ||
592 | return 0; | |
593 | } | |
594 | #endif | |
595 | ||
716540fd | 596 | static const struct dev_pm_ops max9860_pm_ops = { |
3b2af7f7 PR |
597 | SET_RUNTIME_PM_OPS(max9860_suspend, max9860_resume, NULL) |
598 | }; | |
599 | ||
600 | static int max9860_probe(struct i2c_client *i2c, | |
601 | const struct i2c_device_id *id) | |
602 | { | |
603 | struct device *dev = &i2c->dev; | |
604 | struct max9860_priv *max9860; | |
605 | int ret; | |
606 | struct clk *mclk; | |
607 | unsigned long mclk_rate; | |
608 | int i; | |
609 | int intr; | |
610 | ||
611 | max9860 = devm_kzalloc(dev, sizeof(struct max9860_priv), GFP_KERNEL); | |
612 | if (!max9860) | |
613 | return -ENOMEM; | |
614 | ||
615 | max9860->dvddio = devm_regulator_get(dev, "DVDDIO"); | |
616 | if (IS_ERR(max9860->dvddio)) { | |
617 | ret = PTR_ERR(max9860->dvddio); | |
618 | if (ret != -EPROBE_DEFER) | |
619 | dev_err(dev, "Failed to get DVDDIO supply: %d\n", ret); | |
620 | return ret; | |
621 | } | |
622 | ||
623 | max9860->dvddio_nb.notifier_call = max9860_dvddio_event; | |
624 | ||
625 | ret = regulator_register_notifier(max9860->dvddio, &max9860->dvddio_nb); | |
626 | if (ret) | |
627 | dev_err(dev, "Failed to register DVDDIO notifier: %d\n", ret); | |
628 | ||
629 | ret = regulator_enable(max9860->dvddio); | |
630 | if (ret != 0) { | |
631 | dev_err(dev, "Failed to enable DVDDIO: %d\n", ret); | |
632 | return ret; | |
633 | } | |
634 | ||
635 | max9860->regmap = devm_regmap_init_i2c(i2c, &max9860_regmap); | |
636 | if (IS_ERR(max9860->regmap)) { | |
637 | ret = PTR_ERR(max9860->regmap); | |
638 | goto err_regulator; | |
639 | } | |
640 | ||
641 | dev_set_drvdata(dev, max9860); | |
642 | ||
643 | /* | |
644 | * mclk has to be in the 10MHz to 60MHz range. | |
645 | * psclk is used to scale mclk into pclk so that | |
646 | * pclk is in the 10MHz to 20MHz range. | |
647 | */ | |
648 | mclk = clk_get(dev, "mclk"); | |
649 | ||
650 | if (IS_ERR(mclk)) { | |
651 | ret = PTR_ERR(mclk); | |
652 | if (ret != -EPROBE_DEFER) | |
653 | dev_err(dev, "Failed to get MCLK: %d\n", ret); | |
654 | goto err_regulator; | |
655 | } | |
656 | ||
657 | mclk_rate = clk_get_rate(mclk); | |
658 | clk_put(mclk); | |
659 | ||
660 | if (mclk_rate > 60000000 || mclk_rate < 10000000) { | |
661 | dev_err(dev, "Bad mclk %luHz (needs 10MHz - 60MHz)\n", | |
662 | mclk_rate); | |
663 | ret = -EINVAL; | |
664 | goto err_regulator; | |
665 | } | |
666 | if (mclk_rate >= 40000000) | |
667 | max9860->psclk = 3; | |
668 | else if (mclk_rate >= 20000000) | |
669 | max9860->psclk = 2; | |
670 | else | |
671 | max9860->psclk = 1; | |
672 | max9860->pclk_rate = mclk_rate >> (max9860->psclk - 1); | |
673 | max9860->psclk <<= MAX9860_PSCLK_SHIFT; | |
674 | dev_dbg(dev, "mclk %lu pclk %lu\n", mclk_rate, max9860->pclk_rate); | |
675 | ||
676 | regcache_cache_bypass(max9860->regmap, true); | |
677 | for (i = 0; i < max9860_regmap.num_reg_defaults; ++i) { | |
678 | ret = regmap_write(max9860->regmap, | |
679 | max9860_regmap.reg_defaults[i].reg, | |
680 | max9860_regmap.reg_defaults[i].def); | |
681 | if (ret) { | |
682 | dev_err(dev, "Failed to initialize register %u: %d\n", | |
683 | max9860_regmap.reg_defaults[i].reg, ret); | |
684 | goto err_regulator; | |
685 | } | |
686 | } | |
687 | regcache_cache_bypass(max9860->regmap, false); | |
688 | ||
689 | ret = regmap_read(max9860->regmap, MAX9860_INTRSTATUS, &intr); | |
690 | if (ret) { | |
691 | dev_err(dev, "Failed to clear INTRSTATUS: %d\n", ret); | |
692 | goto err_regulator; | |
693 | } | |
694 | ||
695 | pm_runtime_set_active(dev); | |
696 | pm_runtime_enable(dev); | |
697 | pm_runtime_idle(dev); | |
698 | ||
699 | ret = snd_soc_register_codec(dev, &max9860_codec_driver, | |
700 | &max9860_dai, 1); | |
701 | if (ret) { | |
702 | dev_err(dev, "Failed to register CODEC: %d\n", ret); | |
703 | goto err_pm; | |
704 | } | |
705 | ||
706 | return 0; | |
707 | ||
708 | err_pm: | |
709 | pm_runtime_disable(dev); | |
710 | err_regulator: | |
711 | regulator_disable(max9860->dvddio); | |
712 | return ret; | |
713 | } | |
714 | ||
715 | static int max9860_remove(struct i2c_client *i2c) | |
716 | { | |
717 | struct device *dev = &i2c->dev; | |
718 | struct max9860_priv *max9860 = dev_get_drvdata(dev); | |
719 | ||
720 | snd_soc_unregister_codec(dev); | |
721 | pm_runtime_disable(dev); | |
722 | regulator_disable(max9860->dvddio); | |
723 | return 0; | |
724 | } | |
725 | ||
726 | static const struct i2c_device_id max9860_i2c_id[] = { | |
727 | { "max9860", }, | |
728 | { } | |
729 | }; | |
730 | MODULE_DEVICE_TABLE(i2c, max9860_i2c_id); | |
731 | ||
732 | static const struct of_device_id max9860_of_match[] = { | |
733 | { .compatible = "maxim,max9860", }, | |
734 | { } | |
735 | }; | |
736 | MODULE_DEVICE_TABLE(of, max9860_of_match); | |
737 | ||
738 | static struct i2c_driver max9860_i2c_driver = { | |
739 | .probe = max9860_probe, | |
740 | .remove = max9860_remove, | |
741 | .id_table = max9860_i2c_id, | |
742 | .driver = { | |
743 | .name = "max9860", | |
744 | .of_match_table = max9860_of_match, | |
745 | .pm = &max9860_pm_ops, | |
746 | }, | |
747 | }; | |
748 | ||
749 | module_i2c_driver(max9860_i2c_driver); | |
750 | ||
751 | MODULE_DESCRIPTION("ASoC MAX9860 Mono Audio Voice Codec driver"); | |
752 | MODULE_AUTHOR("Peter Rosin <peda@axentia.se>"); | |
753 | MODULE_LICENSE("GPL v2"); |