1 /*
2 * es8316.c -- es8316 ALSA SoC audio driver
3 * Copyright Everest Semiconductor Co.,Ltd
4 *
5 * Authors: David Yang <yangxiaohua@everest-semi.com>,
6 * Daniel Drake <drake@endlessm.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/module.h>
14 #include <linux/acpi.h>
15 #include <linux/delay.h>
16 #include <linux/i2c.h>
17 #include <linux/mod_devicetable.h>
18 #include <linux/regmap.h>
19 #include <sound/pcm.h>
20 #include <sound/pcm_params.h>
21 #include <sound/soc.h>
22 #include <sound/soc-dapm.h>
23 #include <sound/tlv.h>
24 #include "es8316.h"
25
26 /* In slave mode at single speed, the codec is documented as accepting 5
27 * MCLK/LRCK ratios, but we also add ratio 400, which is commonly used on
28 * Intel Cherry Trail platforms (19.2MHz MCLK, 48kHz LRCK).
29 */
30 #define NR_SUPPORTED_MCLK_LRCK_RATIOS 6
31 static const unsigned int supported_mclk_lrck_ratios[] = {
32 256, 384, 400, 512, 768, 1024
33 };
34
35 struct es8316_priv {
36 unsigned int sysclk;
37 unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS];
38 struct snd_pcm_hw_constraint_list sysclk_constraints;
39 };
40
41 /*
42 * ES8316 controls
43 */
44 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(dac_vol_tlv, -9600, 50, 1);
45 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(adc_vol_tlv, -9600, 50, 1);
46 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_max_gain_tlv, -650, 150, 0);
47 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_min_gain_tlv, -1200, 150, 0);
48 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_target_tlv, -1650, 150, 0);
49 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpmixer_gain_tlv,
50 0, 4, TLV_DB_SCALE_ITEM(-1200, 150, 0),
51 8, 11, TLV_DB_SCALE_ITEM(-450, 150, 0),
52 );
53
54 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(adc_pga_gain_tlv,
55 0, 0, TLV_DB_SCALE_ITEM(-350, 0, 0),
56 1, 1, TLV_DB_SCALE_ITEM(0, 0, 0),
57 2, 2, TLV_DB_SCALE_ITEM(250, 0, 0),
58 3, 3, TLV_DB_SCALE_ITEM(450, 0, 0),
59 4, 4, TLV_DB_SCALE_ITEM(700, 0, 0),
60 5, 5, TLV_DB_SCALE_ITEM(1000, 0, 0),
61 6, 6, TLV_DB_SCALE_ITEM(1300, 0, 0),
62 7, 7, TLV_DB_SCALE_ITEM(1600, 0, 0),
63 8, 8, TLV_DB_SCALE_ITEM(1800, 0, 0),
64 9, 9, TLV_DB_SCALE_ITEM(2100, 0, 0),
65 10, 10, TLV_DB_SCALE_ITEM(2400, 0, 0),
66 );
67
68 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpout_vol_tlv,
69 0, 0, TLV_DB_SCALE_ITEM(-4800, 0, 0),
70 1, 3, TLV_DB_SCALE_ITEM(-2400, 1200, 0),
71 );
72
73 static const char * const ng_type_txt[] =
74 { "Constant PGA Gain", "Mute ADC Output" };
75 static const struct soc_enum ng_type =
76 SOC_ENUM_SINGLE(ES8316_ADC_ALC_NG, 6, 2, ng_type_txt);
77
78 static const char * const adcpol_txt[] = { "Normal", "Invert" };
79 static const struct soc_enum adcpol =
80 SOC_ENUM_SINGLE(ES8316_ADC_MUTE, 1, 2, adcpol_txt);
81 static const char *const dacpol_txt[] =
82 { "Normal", "R Invert", "L Invert", "L + R Invert" };
83 static const struct soc_enum dacpol =
84 SOC_ENUM_SINGLE(ES8316_DAC_SET1, 0, 4, dacpol_txt);
85
86 static const struct snd_kcontrol_new es8316_snd_controls[] = {
87 SOC_DOUBLE_TLV("Headphone Playback Volume", ES8316_CPHP_ICAL_VOL,
88 4, 0, 3, 1, hpout_vol_tlv),
89 SOC_DOUBLE_TLV("Headphone Mixer Volume", ES8316_HPMIX_VOL,
90 0, 4, 11, 0, hpmixer_gain_tlv),
91
92 SOC_ENUM("Playback Polarity", dacpol),
93 SOC_DOUBLE_R_TLV("DAC Playback Volume", ES8316_DAC_VOLL,
94 ES8316_DAC_VOLR, 0, 0xc0, 1, dac_vol_tlv),
95 SOC_SINGLE("DAC Soft Ramp Switch", ES8316_DAC_SET1, 4, 1, 1),
96 SOC_SINGLE("DAC Soft Ramp Rate", ES8316_DAC_SET1, 2, 4, 0),
97 SOC_SINGLE("DAC Notch Filter Switch", ES8316_DAC_SET2, 6, 1, 0),
98 SOC_SINGLE("DAC Double Fs Switch", ES8316_DAC_SET2, 7, 1, 0),
99 SOC_SINGLE("DAC Stereo Enhancement", ES8316_DAC_SET3, 0, 7, 0),
100
101 SOC_ENUM("Capture Polarity", adcpol),
102 SOC_SINGLE("Mic Boost Switch", ES8316_ADC_D2SEPGA, 0, 1, 0),
103 SOC_SINGLE_TLV("ADC Capture Volume", ES8316_ADC_VOLUME,
104 0, 0xc0, 1, adc_vol_tlv),
105 SOC_SINGLE_TLV("ADC PGA Gain Volume", ES8316_ADC_PGAGAIN,
106 4, 10, 0, adc_pga_gain_tlv),
107 SOC_SINGLE("ADC Soft Ramp Switch", ES8316_ADC_MUTE, 4, 1, 0),
108 SOC_SINGLE("ADC Double Fs Switch", ES8316_ADC_DMIC, 4, 1, 0),
109
110 SOC_SINGLE("ALC Capture Switch", ES8316_ADC_ALC1, 6, 1, 0),
111 SOC_SINGLE_TLV("ALC Capture Max Volume", ES8316_ADC_ALC1, 0, 28, 0,
112 alc_max_gain_tlv),
113 SOC_SINGLE_TLV("ALC Capture Min Volume", ES8316_ADC_ALC2, 0, 28, 0,
114 alc_min_gain_tlv),
115 SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 10, 0,
116 alc_target_tlv),
117 SOC_SINGLE("ALC Capture Hold Time", ES8316_ADC_ALC3, 0, 10, 0),
118 SOC_SINGLE("ALC Capture Decay Time", ES8316_ADC_ALC4, 4, 10, 0),
119 SOC_SINGLE("ALC Capture Attack Time", ES8316_ADC_ALC4, 0, 10, 0),
120 SOC_SINGLE("ALC Capture Noise Gate Switch", ES8316_ADC_ALC_NG,
121 5, 1, 0),
122 SOC_SINGLE("ALC Capture Noise Gate Threshold", ES8316_ADC_ALC_NG,
123 0, 31, 0),
124 SOC_ENUM("ALC Capture Noise Gate Type", ng_type),
125 };
126
127 /* Analog Input Mux */
128 static const char * const es8316_analog_in_txt[] = {
129 "lin1-rin1",
130 "lin2-rin2",
131 "lin1-rin1 with 20db Boost",
132 "lin2-rin2 with 20db Boost"
133 };
134 static const unsigned int es8316_analog_in_values[] = { 0, 1, 2, 3 };
135 static const struct soc_enum es8316_analog_input_enum =
136 SOC_VALUE_ENUM_SINGLE(ES8316_ADC_PDN_LINSEL, 4, 3,
137 ARRAY_SIZE(es8316_analog_in_txt),
138 es8316_analog_in_txt,
139 es8316_analog_in_values);
140 static const struct snd_kcontrol_new es8316_analog_in_mux_controls =
141 SOC_DAPM_ENUM("Route", es8316_analog_input_enum);
142
143 static const char * const es8316_dmic_txt[] = {
144 "dmic disable",
145 "dmic data at high level",
146 "dmic data at low level",
147 };
148 static const unsigned int es8316_dmic_values[] = { 0, 1, 2 };
149 static const struct soc_enum es8316_dmic_src_enum =
150 SOC_VALUE_ENUM_SINGLE(ES8316_ADC_DMIC, 0, 3,
151 ARRAY_SIZE(es8316_dmic_txt),
152 es8316_dmic_txt,
153 es8316_dmic_values);
154 static const struct snd_kcontrol_new es8316_dmic_src_controls =
155 SOC_DAPM_ENUM("Route", es8316_dmic_src_enum);
156
157 /* hp mixer mux */
158 static const char * const es8316_hpmux_texts[] = {
159 "lin1-rin1",
160 "lin2-rin2",
161 "lin-rin with Boost",
162 "lin-rin with Boost and PGA"
163 };
164
165 static const unsigned int es8316_hpmux_values[] = { 0, 1, 2, 3 };
166
167 static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL,
168 4, es8316_hpmux_texts);
169
170 static const struct snd_kcontrol_new es8316_left_hpmux_controls =
171 SOC_DAPM_ENUM("Route", es8316_left_hpmux_enum);
172
173 static SOC_ENUM_SINGLE_DECL(es8316_right_hpmux_enum, ES8316_HPMIX_SEL,
174 0, es8316_hpmux_texts);
175
176 static const struct snd_kcontrol_new es8316_right_hpmux_controls =
177 SOC_DAPM_ENUM("Route", es8316_right_hpmux_enum);
178
179 /* headphone Output Mixer */
180 static const struct snd_kcontrol_new es8316_out_left_mix[] = {
181 SOC_DAPM_SINGLE("LLIN Switch", ES8316_HPMIX_SWITCH, 6, 1, 0),
182 SOC_DAPM_SINGLE("Left DAC Switch", ES8316_HPMIX_SWITCH, 7, 1, 0),
183 };
184 static const struct snd_kcontrol_new es8316_out_right_mix[] = {
185 SOC_DAPM_SINGLE("RLIN Switch", ES8316_HPMIX_SWITCH, 2, 1, 0),
186 SOC_DAPM_SINGLE("Right DAC Switch", ES8316_HPMIX_SWITCH, 3, 1, 0),
187 };
188
189 /* DAC data source mux */
190 static const char * const es8316_dacsrc_texts[] = {
191 "LDATA TO LDAC, RDATA TO RDAC",
192 "LDATA TO LDAC, LDATA TO RDAC",
193 "RDATA TO LDAC, RDATA TO RDAC",
194 "RDATA TO LDAC, LDATA TO RDAC",
195 };
196
197 static const unsigned int es8316_dacsrc_values[] = { 0, 1, 2, 3 };
198
199 static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1,
200 6, es8316_dacsrc_texts);
201
202 static const struct snd_kcontrol_new es8316_dacsrc_mux_controls =
203 SOC_DAPM_ENUM("Route", es8316_dacsrc_mux_enum);
204
205 static const struct snd_soc_dapm_widget es8316_dapm_widgets[] = {
206 SND_SOC_DAPM_SUPPLY("Bias", ES8316_SYS_PDN, 3, 1, NULL, 0),
207 SND_SOC_DAPM_SUPPLY("Analog power", ES8316_SYS_PDN, 4, 1, NULL, 0),
208 SND_SOC_DAPM_SUPPLY("Mic Bias", ES8316_SYS_PDN, 5, 1, NULL, 0),
209
210 SND_SOC_DAPM_INPUT("DMIC"),
211 SND_SOC_DAPM_INPUT("MIC1"),
212 SND_SOC_DAPM_INPUT("MIC2"),
213
214 /* Input Mux */
215 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
216 &es8316_analog_in_mux_controls),
217
218 SND_SOC_DAPM_SUPPLY("ADC Vref", ES8316_SYS_PDN, 1, 1, NULL, 0),
219 SND_SOC_DAPM_SUPPLY("ADC bias", ES8316_SYS_PDN, 2, 1, NULL, 0),
220 SND_SOC_DAPM_SUPPLY("ADC Clock", ES8316_CLKMGR_CLKSW, 3, 0, NULL, 0),
221 SND_SOC_DAPM_PGA("Line input PGA", ES8316_ADC_PDN_LINSEL,
222 7, 1, NULL, 0),
223 SND_SOC_DAPM_ADC("Mono ADC", NULL, ES8316_ADC_PDN_LINSEL, 6, 1),
224 SND_SOC_DAPM_MUX("Digital Mic Mux", SND_SOC_NOPM, 0, 0,
225 &es8316_dmic_src_controls),
226
227 /* Digital Interface */
228 SND_SOC_DAPM_AIF_OUT("I2S OUT", "I2S1 Capture", 1,
229 ES8316_SERDATA_ADC, 6, 1),
230 SND_SOC_DAPM_AIF_IN("I2S IN", "I2S1 Playback", 0,
231 SND_SOC_NOPM, 0, 0),
232
233 SND_SOC_DAPM_MUX("DAC Source Mux", SND_SOC_NOPM, 0, 0,
234 &es8316_dacsrc_mux_controls),
235
236 SND_SOC_DAPM_SUPPLY("DAC Vref", ES8316_SYS_PDN, 0, 1, NULL, 0),
237 SND_SOC_DAPM_SUPPLY("DAC Clock", ES8316_CLKMGR_CLKSW, 2, 0, NULL, 0),
238 SND_SOC_DAPM_DAC("Right DAC", NULL, ES8316_DAC_PDN, 0, 1),
239 SND_SOC_DAPM_DAC("Left DAC", NULL, ES8316_DAC_PDN, 4, 1),
240
241 /* Headphone Output Side */
242 SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0,
243 &es8316_left_hpmux_controls),
244 SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0,
245 &es8316_right_hpmux_controls),
246 SND_SOC_DAPM_MIXER("Left Headphone Mixer", ES8316_HPMIX_PDN,
247 5, 1, &es8316_out_left_mix[0],
248 ARRAY_SIZE(es8316_out_left_mix)),
249 SND_SOC_DAPM_MIXER("Right Headphone Mixer", ES8316_HPMIX_PDN,
250 1, 1, &es8316_out_right_mix[0],
251 ARRAY_SIZE(es8316_out_right_mix)),
252 SND_SOC_DAPM_PGA("Left Headphone Mixer Out", ES8316_HPMIX_PDN,
253 4, 1, NULL, 0),
254 SND_SOC_DAPM_PGA("Right Headphone Mixer Out", ES8316_HPMIX_PDN,
255 0, 1, NULL, 0),
256
257 SND_SOC_DAPM_OUT_DRV("Left Headphone Charge Pump", ES8316_CPHP_OUTEN,
258 6, 0, NULL, 0),
259 SND_SOC_DAPM_OUT_DRV("Right Headphone Charge Pump", ES8316_CPHP_OUTEN,
260 2, 0, NULL, 0),
261 SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", ES8316_CPHP_PDN2,
262 5, 1, NULL, 0),
263 SND_SOC_DAPM_SUPPLY("Headphone Charge Pump Clock", ES8316_CLKMGR_CLKSW,
264 4, 0, NULL, 0),
265
266 SND_SOC_DAPM_OUT_DRV("Left Headphone Driver", ES8316_CPHP_OUTEN,
267 5, 0, NULL, 0),
268 SND_SOC_DAPM_OUT_DRV("Right Headphone Driver", ES8316_CPHP_OUTEN,
269 1, 0, NULL, 0),
270 SND_SOC_DAPM_SUPPLY("Headphone Out", ES8316_CPHP_PDN1, 2, 1, NULL, 0),
271
272 /* pdn_Lical and pdn_Rical bits are documented as Reserved, but must
273 * be explicitly unset in order to enable HP output
274 */
275 SND_SOC_DAPM_SUPPLY("Left Headphone ical", ES8316_CPHP_ICAL_VOL,
276 7, 1, NULL, 0),
277 SND_SOC_DAPM_SUPPLY("Right Headphone ical", ES8316_CPHP_ICAL_VOL,
278 3, 1, NULL, 0),
279
280 SND_SOC_DAPM_OUTPUT("HPOL"),
281 SND_SOC_DAPM_OUTPUT("HPOR"),
282 };
283
284 static const struct snd_soc_dapm_route es8316_dapm_routes[] = {
285 /* Recording */
286 {"MIC1", NULL, "Mic Bias"},
287 {"MIC2", NULL, "Mic Bias"},
288 {"MIC1", NULL, "Bias"},
289 {"MIC2", NULL, "Bias"},
290 {"MIC1", NULL, "Analog power"},
291 {"MIC2", NULL, "Analog power"},
292
293 {"Differential Mux", "lin1-rin1", "MIC1"},
294 {"Differential Mux", "lin2-rin2", "MIC2"},
295 {"Line input PGA", NULL, "Differential Mux"},
296
297 {"Mono ADC", NULL, "ADC Clock"},
298 {"Mono ADC", NULL, "ADC Vref"},
299 {"Mono ADC", NULL, "ADC bias"},
300 {"Mono ADC", NULL, "Line input PGA"},
301
302 /* It's not clear why, but to avoid recording only silence,
303 * the DAC clock must be running for the ADC to work.
304 */
305 {"Mono ADC", NULL, "DAC Clock"},
306
307 {"Digital Mic Mux", "dmic disable", "Mono ADC"},
308
309 {"I2S OUT", NULL, "Digital Mic Mux"},
310
311 /* Playback */
312 {"DAC Source Mux", "LDATA TO LDAC, RDATA TO RDAC", "I2S IN"},
313
314 {"Left DAC", NULL, "DAC Clock"},
315 {"Right DAC", NULL, "DAC Clock"},
316
317 {"Left DAC", NULL, "DAC Vref"},
318 {"Right DAC", NULL, "DAC Vref"},
319
320 {"Left DAC", NULL, "DAC Source Mux"},
321 {"Right DAC", NULL, "DAC Source Mux"},
322
323 {"Left Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
324 {"Right Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
325
326 {"Left Headphone Mixer", "LLIN Switch", "Left Headphone Mux"},
327 {"Left Headphone Mixer", "Left DAC Switch", "Left DAC"},
328
329 {"Right Headphone Mixer", "RLIN Switch", "Right Headphone Mux"},
330 {"Right Headphone Mixer", "Right DAC Switch", "Right DAC"},
331
332 {"Left Headphone Mixer Out", NULL, "Left Headphone Mixer"},
333 {"Right Headphone Mixer Out", NULL, "Right Headphone Mixer"},
334
335 {"Left Headphone Charge Pump", NULL, "Left Headphone Mixer Out"},
336 {"Right Headphone Charge Pump", NULL, "Right Headphone Mixer Out"},
337
338 {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump"},
339 {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump"},
340
341 {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
342 {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
343
344 {"Left Headphone Driver", NULL, "Left Headphone Charge Pump"},
345 {"Right Headphone Driver", NULL, "Right Headphone Charge Pump"},
346
347 {"HPOL", NULL, "Left Headphone Driver"},
348 {"HPOR", NULL, "Right Headphone Driver"},
349
350 {"HPOL", NULL, "Left Headphone ical"},
351 {"HPOR", NULL, "Right Headphone ical"},
352
353 {"Headphone Out", NULL, "Bias"},
354 {"Headphone Out", NULL, "Analog power"},
355 {"HPOL", NULL, "Headphone Out"},
356 {"HPOR", NULL, "Headphone Out"},
357 };
358
es8316_set_dai_sysclk(struct snd_soc_dai * codec_dai,int clk_id,unsigned int freq,int dir)359 static int es8316_set_dai_sysclk(struct snd_soc_dai *codec_dai,
360 int clk_id, unsigned int freq, int dir)
361 {
362 struct snd_soc_codec *codec = codec_dai->codec;
363 struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec);
364 int i;
365 int count = 0;
366
367 es8316->sysclk = freq;
368
369 if (freq == 0)
370 return 0;
371
372 /* Limit supported sample rates to ones that can be autodetected
373 * by the codec running in slave mode.
374 */
375 for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
376 const unsigned int ratio = supported_mclk_lrck_ratios[i];
377
378 if (freq % ratio == 0)
379 es8316->allowed_rates[count++] = freq / ratio;
380 }
381
382 es8316->sysclk_constraints.list = es8316->allowed_rates;
383 es8316->sysclk_constraints.count = count;
384
385 return 0;
386 }
387
es8316_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)388 static int es8316_set_dai_fmt(struct snd_soc_dai *codec_dai,
389 unsigned int fmt)
390 {
391 struct snd_soc_codec *codec = codec_dai->codec;
392 u8 serdata1 = 0;
393 u8 serdata2 = 0;
394 u8 clksw;
395 u8 mask;
396
397 if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
398 dev_err(codec->dev, "Codec driver only supports slave mode\n");
399 return -EINVAL;
400 }
401
402 if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) {
403 dev_err(codec->dev, "Codec driver only supports I2S format\n");
404 return -EINVAL;
405 }
406
407 /* Clock inversion */
408 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
409 case SND_SOC_DAIFMT_NB_NF:
410 break;
411 case SND_SOC_DAIFMT_IB_IF:
412 serdata1 |= ES8316_SERDATA1_BCLK_INV;
413 serdata2 |= ES8316_SERDATA2_ADCLRP;
414 break;
415 case SND_SOC_DAIFMT_IB_NF:
416 serdata1 |= ES8316_SERDATA1_BCLK_INV;
417 break;
418 case SND_SOC_DAIFMT_NB_IF:
419 serdata2 |= ES8316_SERDATA2_ADCLRP;
420 break;
421 default:
422 return -EINVAL;
423 }
424
425 mask = ES8316_SERDATA1_MASTER | ES8316_SERDATA1_BCLK_INV;
426 snd_soc_update_bits(codec, ES8316_SERDATA1, mask, serdata1);
427
428 mask = ES8316_SERDATA2_FMT_MASK | ES8316_SERDATA2_ADCLRP;
429 snd_soc_update_bits(codec, ES8316_SERDATA_ADC, mask, serdata2);
430 snd_soc_update_bits(codec, ES8316_SERDATA_DAC, mask, serdata2);
431
432 /* Enable BCLK and MCLK inputs in slave mode */
433 clksw = ES8316_CLKMGR_CLKSW_MCLK_ON | ES8316_CLKMGR_CLKSW_BCLK_ON;
434 snd_soc_update_bits(codec, ES8316_CLKMGR_CLKSW, clksw, clksw);
435
436 return 0;
437 }
438
es8316_pcm_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)439 static int es8316_pcm_startup(struct snd_pcm_substream *substream,
440 struct snd_soc_dai *dai)
441 {
442 struct snd_soc_codec *codec = dai->codec;
443 struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec);
444
445 if (es8316->sysclk == 0) {
446 dev_err(codec->dev, "No sysclk provided\n");
447 return -EINVAL;
448 }
449
450 /* The set of sample rates that can be supported depends on the
451 * MCLK supplied to the CODEC.
452 */
453 snd_pcm_hw_constraint_list(substream->runtime, 0,
454 SNDRV_PCM_HW_PARAM_RATE,
455 &es8316->sysclk_constraints);
456
457 return 0;
458 }
459
es8316_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)460 static int es8316_pcm_hw_params(struct snd_pcm_substream *substream,
461 struct snd_pcm_hw_params *params,
462 struct snd_soc_dai *dai)
463 {
464 struct snd_soc_pcm_runtime *rtd = substream->private_data;
465 struct snd_soc_codec *codec = rtd->codec;
466 struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec);
467 u8 wordlen = 0;
468
469 if (!es8316->sysclk) {
470 dev_err(codec->dev, "No MCLK configured\n");
471 return -EINVAL;
472 }
473
474 switch (params_format(params)) {
475 case SNDRV_PCM_FORMAT_S16_LE:
476 wordlen = ES8316_SERDATA2_LEN_16;
477 break;
478 case SNDRV_PCM_FORMAT_S20_3LE:
479 wordlen = ES8316_SERDATA2_LEN_20;
480 break;
481 case SNDRV_PCM_FORMAT_S24_LE:
482 wordlen = ES8316_SERDATA2_LEN_24;
483 break;
484 case SNDRV_PCM_FORMAT_S32_LE:
485 wordlen = ES8316_SERDATA2_LEN_32;
486 break;
487 default:
488 return -EINVAL;
489 }
490
491 snd_soc_update_bits(codec, ES8316_SERDATA_DAC,
492 ES8316_SERDATA2_LEN_MASK, wordlen);
493 snd_soc_update_bits(codec, ES8316_SERDATA_ADC,
494 ES8316_SERDATA2_LEN_MASK, wordlen);
495 return 0;
496 }
497
es8316_mute(struct snd_soc_dai * dai,int mute)498 static int es8316_mute(struct snd_soc_dai *dai, int mute)
499 {
500 snd_soc_update_bits(dai->codec, ES8316_DAC_SET1, 0x20,
501 mute ? 0x20 : 0);
502 return 0;
503 }
504
505 #define ES8316_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
506 SNDRV_PCM_FMTBIT_S24_LE)
507
508 static const struct snd_soc_dai_ops es8316_ops = {
509 .startup = es8316_pcm_startup,
510 .hw_params = es8316_pcm_hw_params,
511 .set_fmt = es8316_set_dai_fmt,
512 .set_sysclk = es8316_set_dai_sysclk,
513 .digital_mute = es8316_mute,
514 };
515
516 static struct snd_soc_dai_driver es8316_dai = {
517 .name = "ES8316 HiFi",
518 .playback = {
519 .stream_name = "Playback",
520 .channels_min = 1,
521 .channels_max = 2,
522 .rates = SNDRV_PCM_RATE_8000_48000,
523 .formats = ES8316_FORMATS,
524 },
525 .capture = {
526 .stream_name = "Capture",
527 .channels_min = 1,
528 .channels_max = 2,
529 .rates = SNDRV_PCM_RATE_8000_48000,
530 .formats = ES8316_FORMATS,
531 },
532 .ops = &es8316_ops,
533 .symmetric_rates = 1,
534 };
535
es8316_probe(struct snd_soc_codec * codec)536 static int es8316_probe(struct snd_soc_codec *codec)
537 {
538 /* Reset codec and enable current state machine */
539 snd_soc_write(codec, ES8316_RESET, 0x3f);
540 usleep_range(5000, 5500);
541 snd_soc_write(codec, ES8316_RESET, ES8316_RESET_CSM_ON);
542 msleep(30);
543
544 /*
545 * Documentation is unclear, but this value from the vendor driver is
546 * needed otherwise audio output is silent.
547 */
548 snd_soc_write(codec, ES8316_SYS_VMIDSEL, 0xff);
549
550 /*
551 * Documentation for this register is unclear and incomplete,
552 * but here is a vendor-provided value that improves volume
553 * and quality for Intel CHT platforms.
554 */
555 snd_soc_write(codec, ES8316_CLKMGR_ADCOSR, 0x32);
556
557 return 0;
558 }
559
560 static const struct snd_soc_codec_driver soc_codec_dev_es8316 = {
561 .probe = es8316_probe,
562 .idle_bias_off = true,
563
564 .component_driver = {
565 .controls = es8316_snd_controls,
566 .num_controls = ARRAY_SIZE(es8316_snd_controls),
567 .dapm_widgets = es8316_dapm_widgets,
568 .num_dapm_widgets = ARRAY_SIZE(es8316_dapm_widgets),
569 .dapm_routes = es8316_dapm_routes,
570 .num_dapm_routes = ARRAY_SIZE(es8316_dapm_routes),
571 },
572 };
573
574 static const struct regmap_config es8316_regmap = {
575 .reg_bits = 8,
576 .val_bits = 8,
577 .max_register = 0x53,
578 .cache_type = REGCACHE_RBTREE,
579 };
580
es8316_i2c_probe(struct i2c_client * i2c_client,const struct i2c_device_id * id)581 static int es8316_i2c_probe(struct i2c_client *i2c_client,
582 const struct i2c_device_id *id)
583 {
584 struct es8316_priv *es8316;
585 struct regmap *regmap;
586
587 es8316 = devm_kzalloc(&i2c_client->dev, sizeof(struct es8316_priv),
588 GFP_KERNEL);
589 if (es8316 == NULL)
590 return -ENOMEM;
591
592 i2c_set_clientdata(i2c_client, es8316);
593
594 regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap);
595 if (IS_ERR(regmap))
596 return PTR_ERR(regmap);
597
598 return snd_soc_register_codec(&i2c_client->dev, &soc_codec_dev_es8316,
599 &es8316_dai, 1);
600 }
601
es8316_i2c_remove(struct i2c_client * client)602 static int es8316_i2c_remove(struct i2c_client *client)
603 {
604 snd_soc_unregister_codec(&client->dev);
605 return 0;
606 }
607
608 static const struct i2c_device_id es8316_i2c_id[] = {
609 {"es8316", 0 },
610 {}
611 };
612 MODULE_DEVICE_TABLE(i2c, es8316_i2c_id);
613
614 static const struct of_device_id es8316_of_match[] = {
615 { .compatible = "everest,es8316", },
616 {},
617 };
618 MODULE_DEVICE_TABLE(of, es8316_of_match);
619
620 static const struct acpi_device_id es8316_acpi_match[] = {
621 {"ESSX8316", 0},
622 {},
623 };
624 MODULE_DEVICE_TABLE(acpi, es8316_acpi_match);
625
626 static struct i2c_driver es8316_i2c_driver = {
627 .driver = {
628 .name = "es8316",
629 .acpi_match_table = ACPI_PTR(es8316_acpi_match),
630 .of_match_table = of_match_ptr(es8316_of_match),
631 },
632 .probe = es8316_i2c_probe,
633 .remove = es8316_i2c_remove,
634 .id_table = es8316_i2c_id,
635 };
636 module_i2c_driver(es8316_i2c_driver);
637
638 MODULE_DESCRIPTION("Everest Semi ES8316 ALSA SoC Codec Driver");
639 MODULE_AUTHOR("David Yang <yangxiaohua@everest-semi.com>");
640 MODULE_LICENSE("GPL v2");
641