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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/es8316.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * es8316.c -- es8316 ALSA SoC audio driver
  4  * Copyright Everest Semiconductor Co.,Ltd
  5  *
  6  * Authors: David Yang <yangxiaohua@everest-semi.com>,
  7  *          Daniel Drake <drake@endlessm.com>
  8  */
  9 
 10 #include <linux/module.h>
 11 #include <linux/acpi.h>
 12 #include <linux/delay.h>
 13 #include <linux/i2c.h>
 14 #include <linux/mod_devicetable.h>
 15 #include <linux/mutex.h>
 16 #include <linux/regmap.h>
 17 #include <sound/pcm.h>
 18 #include <sound/pcm_params.h>
 19 #include <sound/soc.h>
 20 #include <sound/soc-dapm.h>
 21 #include <sound/tlv.h>
 22 #include <sound/jack.h>
 23 #include "es8316.h"
 24 
 25 /* In slave mode at single speed, the codec is documented as accepting 5
 26  * MCLK/LRCK ratios, but we also add ratio 400, which is commonly used on
 27  * Intel Cherry Trail platforms (19.2MHz MCLK, 48kHz LRCK).
 28  */
 29 #define NR_SUPPORTED_MCLK_LRCK_RATIOS 6
 30 static const unsigned int supported_mclk_lrck_ratios[] = {
 31         256, 384, 400, 512, 768, 1024
 32 };
 33 
 34 struct es8316_priv {
 35         struct mutex lock;
 36         struct regmap *regmap;
 37         struct snd_soc_component *component;
 38         struct snd_soc_jack *jack;
 39         int irq;
 40         unsigned int sysclk;
 41         unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS];
 42         struct snd_pcm_hw_constraint_list sysclk_constraints;
 43         bool jd_inverted;
 44 };
 45 
 46 /*
 47  * ES8316 controls
 48  */
 49 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(dac_vol_tlv, -9600, 50, 1);
 50 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(adc_vol_tlv, -9600, 50, 1);
 51 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_max_gain_tlv, -650, 150, 0);
 52 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_min_gain_tlv, -1200, 150, 0);
 53 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_target_tlv, -1650, 150, 0);
 54 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpmixer_gain_tlv,
 55         0, 4, TLV_DB_SCALE_ITEM(-1200, 150, 0),
 56         8, 11, TLV_DB_SCALE_ITEM(-450, 150, 0),
 57 );
 58 
 59 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(adc_pga_gain_tlv,
 60         0, 0, TLV_DB_SCALE_ITEM(-350, 0, 0),
 61         1, 1, TLV_DB_SCALE_ITEM(0, 0, 0),
 62         2, 2, TLV_DB_SCALE_ITEM(250, 0, 0),
 63         3, 3, TLV_DB_SCALE_ITEM(450, 0, 0),
 64         4, 4, TLV_DB_SCALE_ITEM(700, 0, 0),
 65         5, 5, TLV_DB_SCALE_ITEM(1000, 0, 0),
 66         6, 6, TLV_DB_SCALE_ITEM(1300, 0, 0),
 67         7, 7, TLV_DB_SCALE_ITEM(1600, 0, 0),
 68         8, 8, TLV_DB_SCALE_ITEM(1800, 0, 0),
 69         9, 9, TLV_DB_SCALE_ITEM(2100, 0, 0),
 70         10, 10, TLV_DB_SCALE_ITEM(2400, 0, 0),
 71 );
 72 
 73 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpout_vol_tlv,
 74         0, 0, TLV_DB_SCALE_ITEM(-4800, 0, 0),
 75         1, 3, TLV_DB_SCALE_ITEM(-2400, 1200, 0),
 76 );
 77 
 78 static const char * const ng_type_txt[] =
 79         { "Constant PGA Gain", "Mute ADC Output" };
 80 static const struct soc_enum ng_type =
 81         SOC_ENUM_SINGLE(ES8316_ADC_ALC_NG, 6, 2, ng_type_txt);
 82 
 83 static const char * const adcpol_txt[] = { "Normal", "Invert" };
 84 static const struct soc_enum adcpol =
 85         SOC_ENUM_SINGLE(ES8316_ADC_MUTE, 1, 2, adcpol_txt);
 86 static const char *const dacpol_txt[] =
 87         { "Normal", "R Invert", "L Invert", "L + R Invert" };
 88 static const struct soc_enum dacpol =
 89         SOC_ENUM_SINGLE(ES8316_DAC_SET1, 0, 4, dacpol_txt);
 90 
 91 static const struct snd_kcontrol_new es8316_snd_controls[] = {
 92         SOC_DOUBLE_TLV("Headphone Playback Volume", ES8316_CPHP_ICAL_VOL,
 93                        4, 0, 3, 1, hpout_vol_tlv),
 94         SOC_DOUBLE_TLV("Headphone Mixer Volume", ES8316_HPMIX_VOL,
 95                        0, 4, 11, 0, hpmixer_gain_tlv),
 96 
 97         SOC_ENUM("Playback Polarity", dacpol),
 98         SOC_DOUBLE_R_TLV("DAC Playback Volume", ES8316_DAC_VOLL,
 99                          ES8316_DAC_VOLR, 0, 0xc0, 1, dac_vol_tlv),
100         SOC_SINGLE("DAC Soft Ramp Switch", ES8316_DAC_SET1, 4, 1, 1),
101         SOC_SINGLE("DAC Soft Ramp Rate", ES8316_DAC_SET1, 2, 4, 0),
102         SOC_SINGLE("DAC Notch Filter Switch", ES8316_DAC_SET2, 6, 1, 0),
103         SOC_SINGLE("DAC Double Fs Switch", ES8316_DAC_SET2, 7, 1, 0),
104         SOC_SINGLE("DAC Stereo Enhancement", ES8316_DAC_SET3, 0, 7, 0),
105         SOC_SINGLE("DAC Mono Mix Switch", ES8316_DAC_SET3, 3, 1, 0),
106 
107         SOC_ENUM("Capture Polarity", adcpol),
108         SOC_SINGLE("Mic Boost Switch", ES8316_ADC_D2SEPGA, 0, 1, 0),
109         SOC_SINGLE_TLV("ADC Capture Volume", ES8316_ADC_VOLUME,
110                        0, 0xc0, 1, adc_vol_tlv),
111         SOC_SINGLE_TLV("ADC PGA Gain Volume", ES8316_ADC_PGAGAIN,
112                        4, 10, 0, adc_pga_gain_tlv),
113         SOC_SINGLE("ADC Soft Ramp Switch", ES8316_ADC_MUTE, 4, 1, 0),
114         SOC_SINGLE("ADC Double Fs Switch", ES8316_ADC_DMIC, 4, 1, 0),
115 
116         SOC_SINGLE("ALC Capture Switch", ES8316_ADC_ALC1, 6, 1, 0),
117         SOC_SINGLE_TLV("ALC Capture Max Volume", ES8316_ADC_ALC1, 0, 28, 0,
118                        alc_max_gain_tlv),
119         SOC_SINGLE_TLV("ALC Capture Min Volume", ES8316_ADC_ALC2, 0, 28, 0,
120                        alc_min_gain_tlv),
121         SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 10, 0,
122                        alc_target_tlv),
123         SOC_SINGLE("ALC Capture Hold Time", ES8316_ADC_ALC3, 0, 10, 0),
124         SOC_SINGLE("ALC Capture Decay Time", ES8316_ADC_ALC4, 4, 10, 0),
125         SOC_SINGLE("ALC Capture Attack Time", ES8316_ADC_ALC4, 0, 10, 0),
126         SOC_SINGLE("ALC Capture Noise Gate Switch", ES8316_ADC_ALC_NG,
127                    5, 1, 0),
128         SOC_SINGLE("ALC Capture Noise Gate Threshold", ES8316_ADC_ALC_NG,
129                    0, 31, 0),
130         SOC_ENUM("ALC Capture Noise Gate Type", ng_type),
131 };
132 
133 /* Analog Input Mux */
134 static const char * const es8316_analog_in_txt[] = {
135                 "lin1-rin1",
136                 "lin2-rin2",
137                 "lin1-rin1 with 20db Boost",
138                 "lin2-rin2 with 20db Boost"
139 };
140 static const unsigned int es8316_analog_in_values[] = { 0, 1, 2, 3 };
141 static const struct soc_enum es8316_analog_input_enum =
142         SOC_VALUE_ENUM_SINGLE(ES8316_ADC_PDN_LINSEL, 4, 3,
143                               ARRAY_SIZE(es8316_analog_in_txt),
144                               es8316_analog_in_txt,
145                               es8316_analog_in_values);
146 static const struct snd_kcontrol_new es8316_analog_in_mux_controls =
147         SOC_DAPM_ENUM("Route", es8316_analog_input_enum);
148 
149 static const char * const es8316_dmic_txt[] = {
150                 "dmic disable",
151                 "dmic data at high level",
152                 "dmic data at low level",
153 };
154 static const unsigned int es8316_dmic_values[] = { 0, 1, 2 };
155 static const struct soc_enum es8316_dmic_src_enum =
156         SOC_VALUE_ENUM_SINGLE(ES8316_ADC_DMIC, 0, 3,
157                               ARRAY_SIZE(es8316_dmic_txt),
158                               es8316_dmic_txt,
159                               es8316_dmic_values);
160 static const struct snd_kcontrol_new es8316_dmic_src_controls =
161         SOC_DAPM_ENUM("Route", es8316_dmic_src_enum);
162 
163 /* hp mixer mux */
164 static const char * const es8316_hpmux_texts[] = {
165         "lin1-rin1",
166         "lin2-rin2",
167         "lin-rin with Boost",
168         "lin-rin with Boost and PGA"
169 };
170 
171 static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL,
172         4, es8316_hpmux_texts);
173 
174 static const struct snd_kcontrol_new es8316_left_hpmux_controls =
175         SOC_DAPM_ENUM("Route", es8316_left_hpmux_enum);
176 
177 static SOC_ENUM_SINGLE_DECL(es8316_right_hpmux_enum, ES8316_HPMIX_SEL,
178         0, es8316_hpmux_texts);
179 
180 static const struct snd_kcontrol_new es8316_right_hpmux_controls =
181         SOC_DAPM_ENUM("Route", es8316_right_hpmux_enum);
182 
183 /* headphone Output Mixer */
184 static const struct snd_kcontrol_new es8316_out_left_mix[] = {
185         SOC_DAPM_SINGLE("LLIN Switch", ES8316_HPMIX_SWITCH, 6, 1, 0),
186         SOC_DAPM_SINGLE("Left DAC Switch", ES8316_HPMIX_SWITCH, 7, 1, 0),
187 };
188 static const struct snd_kcontrol_new es8316_out_right_mix[] = {
189         SOC_DAPM_SINGLE("RLIN Switch", ES8316_HPMIX_SWITCH, 2, 1, 0),
190         SOC_DAPM_SINGLE("Right DAC Switch", ES8316_HPMIX_SWITCH, 3, 1, 0),
191 };
192 
193 /* DAC data source mux */
194 static const char * const es8316_dacsrc_texts[] = {
195         "LDATA TO LDAC, RDATA TO RDAC",
196         "LDATA TO LDAC, LDATA TO RDAC",
197         "RDATA TO LDAC, RDATA TO RDAC",
198         "RDATA TO LDAC, LDATA TO RDAC",
199 };
200 
201 static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1,
202         6, es8316_dacsrc_texts);
203 
204 static const struct snd_kcontrol_new es8316_dacsrc_mux_controls =
205         SOC_DAPM_ENUM("Route", es8316_dacsrc_mux_enum);
206 
207 static const struct snd_soc_dapm_widget es8316_dapm_widgets[] = {
208         SND_SOC_DAPM_SUPPLY("Bias", ES8316_SYS_PDN, 3, 1, NULL, 0),
209         SND_SOC_DAPM_SUPPLY("Analog power", ES8316_SYS_PDN, 4, 1, NULL, 0),
210         SND_SOC_DAPM_SUPPLY("Mic Bias", ES8316_SYS_PDN, 5, 1, NULL, 0),
211 
212         SND_SOC_DAPM_INPUT("DMIC"),
213         SND_SOC_DAPM_INPUT("MIC1"),
214         SND_SOC_DAPM_INPUT("MIC2"),
215 
216         /* Input Mux */
217         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
218                          &es8316_analog_in_mux_controls),
219 
220         SND_SOC_DAPM_SUPPLY("ADC Vref", ES8316_SYS_PDN, 1, 1, NULL, 0),
221         SND_SOC_DAPM_SUPPLY("ADC bias", ES8316_SYS_PDN, 2, 1, NULL, 0),
222         SND_SOC_DAPM_SUPPLY("ADC Clock", ES8316_CLKMGR_CLKSW, 3, 0, NULL, 0),
223         SND_SOC_DAPM_PGA("Line input PGA", ES8316_ADC_PDN_LINSEL,
224                          7, 1, NULL, 0),
225         SND_SOC_DAPM_ADC("Mono ADC", NULL, ES8316_ADC_PDN_LINSEL, 6, 1),
226         SND_SOC_DAPM_MUX("Digital Mic Mux", SND_SOC_NOPM, 0, 0,
227                          &es8316_dmic_src_controls),
228 
229         /* Digital Interface */
230         SND_SOC_DAPM_AIF_OUT("I2S OUT", "I2S1 Capture",  1,
231                              ES8316_SERDATA_ADC, 6, 1),
232         SND_SOC_DAPM_AIF_IN("I2S IN", "I2S1 Playback", 0,
233                             SND_SOC_NOPM, 0, 0),
234 
235         SND_SOC_DAPM_MUX("DAC Source Mux", SND_SOC_NOPM, 0, 0,
236                          &es8316_dacsrc_mux_controls),
237 
238         SND_SOC_DAPM_SUPPLY("DAC Vref", ES8316_SYS_PDN, 0, 1, NULL, 0),
239         SND_SOC_DAPM_SUPPLY("DAC Clock", ES8316_CLKMGR_CLKSW, 2, 0, NULL, 0),
240         SND_SOC_DAPM_DAC("Right DAC", NULL, ES8316_DAC_PDN, 0, 1),
241         SND_SOC_DAPM_DAC("Left DAC", NULL, ES8316_DAC_PDN, 4, 1),
242 
243         /* Headphone Output Side */
244         SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0,
245                          &es8316_left_hpmux_controls),
246         SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0,
247                          &es8316_right_hpmux_controls),
248         SND_SOC_DAPM_MIXER("Left Headphone Mixer", ES8316_HPMIX_PDN,
249                            5, 1, &es8316_out_left_mix[0],
250                            ARRAY_SIZE(es8316_out_left_mix)),
251         SND_SOC_DAPM_MIXER("Right Headphone Mixer", ES8316_HPMIX_PDN,
252                            1, 1, &es8316_out_right_mix[0],
253                            ARRAY_SIZE(es8316_out_right_mix)),
254         SND_SOC_DAPM_PGA("Left Headphone Mixer Out", ES8316_HPMIX_PDN,
255                          4, 1, NULL, 0),
256         SND_SOC_DAPM_PGA("Right Headphone Mixer Out", ES8316_HPMIX_PDN,
257                          0, 1, NULL, 0),
258 
259         SND_SOC_DAPM_OUT_DRV("Left Headphone Charge Pump", ES8316_CPHP_OUTEN,
260                              6, 0, NULL, 0),
261         SND_SOC_DAPM_OUT_DRV("Right Headphone Charge Pump", ES8316_CPHP_OUTEN,
262                              2, 0, NULL, 0),
263         SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", ES8316_CPHP_PDN2,
264                             5, 1, NULL, 0),
265         SND_SOC_DAPM_SUPPLY("Headphone Charge Pump Clock", ES8316_CLKMGR_CLKSW,
266                             4, 0, NULL, 0),
267 
268         SND_SOC_DAPM_OUT_DRV("Left Headphone Driver", ES8316_CPHP_OUTEN,
269                              5, 0, NULL, 0),
270         SND_SOC_DAPM_OUT_DRV("Right Headphone Driver", ES8316_CPHP_OUTEN,
271                              1, 0, NULL, 0),
272         SND_SOC_DAPM_SUPPLY("Headphone Out", ES8316_CPHP_PDN1, 2, 1, NULL, 0),
273 
274         /* pdn_Lical and pdn_Rical bits are documented as Reserved, but must
275          * be explicitly unset in order to enable HP output
276          */
277         SND_SOC_DAPM_SUPPLY("Left Headphone ical", ES8316_CPHP_ICAL_VOL,
278                             7, 1, NULL, 0),
279         SND_SOC_DAPM_SUPPLY("Right Headphone ical", ES8316_CPHP_ICAL_VOL,
280                             3, 1, NULL, 0),
281 
282         SND_SOC_DAPM_OUTPUT("HPOL"),
283         SND_SOC_DAPM_OUTPUT("HPOR"),
284 };
285 
286 static const struct snd_soc_dapm_route es8316_dapm_routes[] = {
287         /* Recording */
288         {"MIC1", NULL, "Mic Bias"},
289         {"MIC2", NULL, "Mic Bias"},
290         {"MIC1", NULL, "Bias"},
291         {"MIC2", NULL, "Bias"},
292         {"MIC1", NULL, "Analog power"},
293         {"MIC2", NULL, "Analog power"},
294 
295         {"Differential Mux", "lin1-rin1", "MIC1"},
296         {"Differential Mux", "lin2-rin2", "MIC2"},
297         {"Line input PGA", NULL, "Differential Mux"},
298 
299         {"Mono ADC", NULL, "ADC Clock"},
300         {"Mono ADC", NULL, "ADC Vref"},
301         {"Mono ADC", NULL, "ADC bias"},
302         {"Mono ADC", NULL, "Line input PGA"},
303 
304         /* It's not clear why, but to avoid recording only silence,
305          * the DAC clock must be running for the ADC to work.
306          */
307         {"Mono ADC", NULL, "DAC Clock"},
308 
309         {"Digital Mic Mux", "dmic disable", "Mono ADC"},
310 
311         {"I2S OUT", NULL, "Digital Mic Mux"},
312 
313         /* Playback */
314         {"DAC Source Mux", "LDATA TO LDAC, RDATA TO RDAC", "I2S IN"},
315 
316         {"Left DAC", NULL, "DAC Clock"},
317         {"Right DAC", NULL, "DAC Clock"},
318 
319         {"Left DAC", NULL, "DAC Vref"},
320         {"Right DAC", NULL, "DAC Vref"},
321 
322         {"Left DAC", NULL, "DAC Source Mux"},
323         {"Right DAC", NULL, "DAC Source Mux"},
324 
325         {"Left Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
326         {"Right Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
327 
328         {"Left Headphone Mixer", "LLIN Switch", "Left Headphone Mux"},
329         {"Left Headphone Mixer", "Left DAC Switch", "Left DAC"},
330 
331         {"Right Headphone Mixer", "RLIN Switch", "Right Headphone Mux"},
332         {"Right Headphone Mixer", "Right DAC Switch", "Right DAC"},
333 
334         {"Left Headphone Mixer Out", NULL, "Left Headphone Mixer"},
335         {"Right Headphone Mixer Out", NULL, "Right Headphone Mixer"},
336 
337         {"Left Headphone Charge Pump", NULL, "Left Headphone Mixer Out"},
338         {"Right Headphone Charge Pump", NULL, "Right Headphone Mixer Out"},
339 
340         {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump"},
341         {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump"},
342 
343         {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
344         {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
345 
346         {"Left Headphone Driver", NULL, "Left Headphone Charge Pump"},
347         {"Right Headphone Driver", NULL, "Right Headphone Charge Pump"},
348 
349         {"HPOL", NULL, "Left Headphone Driver"},
350         {"HPOR", NULL, "Right Headphone Driver"},
351 
352         {"HPOL", NULL, "Left Headphone ical"},
353         {"HPOR", NULL, "Right Headphone ical"},
354 
355         {"Headphone Out", NULL, "Bias"},
356         {"Headphone Out", NULL, "Analog power"},
357         {"HPOL", NULL, "Headphone Out"},
358         {"HPOR", NULL, "Headphone Out"},
359 };
360 
361 static int es8316_set_dai_sysclk(struct snd_soc_dai *codec_dai,
362                                  int clk_id, unsigned int freq, int dir)
363 {
364         struct snd_soc_component *component = codec_dai->component;
365         struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
366         int i;
367         int count = 0;
368 
369         es8316->sysclk = freq;
370 
371         if (freq == 0)
372                 return 0;
373 
374         /* Limit supported sample rates to ones that can be autodetected
375          * by the codec running in slave mode.
376          */
377         for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
378                 const unsigned int ratio = supported_mclk_lrck_ratios[i];
379 
380                 if (freq % ratio == 0)
381                         es8316->allowed_rates[count++] = freq / ratio;
382         }
383 
384         es8316->sysclk_constraints.list = es8316->allowed_rates;
385         es8316->sysclk_constraints.count = count;
386 
387         return 0;
388 }
389 
390 static int es8316_set_dai_fmt(struct snd_soc_dai *codec_dai,
391                               unsigned int fmt)
392 {
393         struct snd_soc_component *component = codec_dai->component;
394         u8 serdata1 = 0;
395         u8 serdata2 = 0;
396         u8 clksw;
397         u8 mask;
398 
399         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
400                 dev_err(component->dev, "Codec driver only supports slave mode\n");
401                 return -EINVAL;
402         }
403 
404         if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) {
405                 dev_err(component->dev, "Codec driver only supports I2S format\n");
406                 return -EINVAL;
407         }
408 
409         /* Clock inversion */
410         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
411         case SND_SOC_DAIFMT_NB_NF:
412                 break;
413         case SND_SOC_DAIFMT_IB_IF:
414                 serdata1 |= ES8316_SERDATA1_BCLK_INV;
415                 serdata2 |= ES8316_SERDATA2_ADCLRP;
416                 break;
417         case SND_SOC_DAIFMT_IB_NF:
418                 serdata1 |= ES8316_SERDATA1_BCLK_INV;
419                 break;
420         case SND_SOC_DAIFMT_NB_IF:
421                 serdata2 |= ES8316_SERDATA2_ADCLRP;
422                 break;
423         default:
424                 return -EINVAL;
425         }
426 
427         mask = ES8316_SERDATA1_MASTER | ES8316_SERDATA1_BCLK_INV;
428         snd_soc_component_update_bits(component, ES8316_SERDATA1, mask, serdata1);
429 
430         mask = ES8316_SERDATA2_FMT_MASK | ES8316_SERDATA2_ADCLRP;
431         snd_soc_component_update_bits(component, ES8316_SERDATA_ADC, mask, serdata2);
432         snd_soc_component_update_bits(component, ES8316_SERDATA_DAC, mask, serdata2);
433 
434         /* Enable BCLK and MCLK inputs in slave mode */
435         clksw = ES8316_CLKMGR_CLKSW_MCLK_ON | ES8316_CLKMGR_CLKSW_BCLK_ON;
436         snd_soc_component_update_bits(component, ES8316_CLKMGR_CLKSW, clksw, clksw);
437 
438         return 0;
439 }
440 
441 static int es8316_pcm_startup(struct snd_pcm_substream *substream,
442                               struct snd_soc_dai *dai)
443 {
444         struct snd_soc_component *component = dai->component;
445         struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
446 
447         if (es8316->sysclk == 0) {
448                 dev_err(component->dev, "No sysclk provided\n");
449                 return -EINVAL;
450         }
451 
452         /* The set of sample rates that can be supported depends on the
453          * MCLK supplied to the CODEC.
454          */
455         snd_pcm_hw_constraint_list(substream->runtime, 0,
456                                    SNDRV_PCM_HW_PARAM_RATE,
457                                    &es8316->sysclk_constraints);
458 
459         return 0;
460 }
461 
462 static int es8316_pcm_hw_params(struct snd_pcm_substream *substream,
463                                 struct snd_pcm_hw_params *params,
464                                 struct snd_soc_dai *dai)
465 {
466         struct snd_soc_component *component = dai->component;
467         struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
468         u8 wordlen = 0;
469 
470         if (!es8316->sysclk) {
471                 dev_err(component->dev, "No MCLK configured\n");
472                 return -EINVAL;
473         }
474 
475         switch (params_format(params)) {
476         case SNDRV_PCM_FORMAT_S16_LE:
477                 wordlen = ES8316_SERDATA2_LEN_16;
478                 break;
479         case SNDRV_PCM_FORMAT_S20_3LE:
480                 wordlen = ES8316_SERDATA2_LEN_20;
481                 break;
482         case SNDRV_PCM_FORMAT_S24_LE:
483                 wordlen = ES8316_SERDATA2_LEN_24;
484                 break;
485         case SNDRV_PCM_FORMAT_S32_LE:
486                 wordlen = ES8316_SERDATA2_LEN_32;
487                 break;
488         default:
489                 return -EINVAL;
490         }
491 
492         snd_soc_component_update_bits(component, ES8316_SERDATA_DAC,
493                             ES8316_SERDATA2_LEN_MASK, wordlen);
494         snd_soc_component_update_bits(component, ES8316_SERDATA_ADC,
495                             ES8316_SERDATA2_LEN_MASK, wordlen);
496         return 0;
497 }
498 
499 static int es8316_mute(struct snd_soc_dai *dai, int mute)
500 {
501         snd_soc_component_update_bits(dai->component, ES8316_DAC_SET1, 0x20,
502                             mute ? 0x20 : 0);
503         return 0;
504 }
505 
506 #define ES8316_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
507                         SNDRV_PCM_FMTBIT_S24_LE)
508 
509 static const struct snd_soc_dai_ops es8316_ops = {
510         .startup = es8316_pcm_startup,
511         .hw_params = es8316_pcm_hw_params,
512         .set_fmt = es8316_set_dai_fmt,
513         .set_sysclk = es8316_set_dai_sysclk,
514         .digital_mute = es8316_mute,
515 };
516 
517 static struct snd_soc_dai_driver es8316_dai = {
518         .name = "ES8316 HiFi",
519         .playback = {
520                 .stream_name = "Playback",
521                 .channels_min = 1,
522                 .channels_max = 2,
523                 .rates = SNDRV_PCM_RATE_8000_48000,
524                 .formats = ES8316_FORMATS,
525         },
526         .capture = {
527                 .stream_name = "Capture",
528                 .channels_min = 1,
529                 .channels_max = 2,
530                 .rates = SNDRV_PCM_RATE_8000_48000,
531                 .formats = ES8316_FORMATS,
532         },
533         .ops = &es8316_ops,
534         .symmetric_rates = 1,
535 };
536 
537 static void es8316_enable_micbias_for_mic_gnd_short_detect(
538         struct snd_soc_component *component)
539 {
540         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
541 
542         snd_soc_dapm_mutex_lock(dapm);
543         snd_soc_dapm_force_enable_pin_unlocked(dapm, "Bias");
544         snd_soc_dapm_force_enable_pin_unlocked(dapm, "Analog power");
545         snd_soc_dapm_force_enable_pin_unlocked(dapm, "Mic Bias");
546         snd_soc_dapm_sync_unlocked(dapm);
547         snd_soc_dapm_mutex_unlock(dapm);
548 
549         msleep(20);
550 }
551 
552 static void es8316_disable_micbias_for_mic_gnd_short_detect(
553         struct snd_soc_component *component)
554 {
555         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
556 
557         snd_soc_dapm_mutex_lock(dapm);
558         snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Bias");
559         snd_soc_dapm_disable_pin_unlocked(dapm, "Analog power");
560         snd_soc_dapm_disable_pin_unlocked(dapm, "Bias");
561         snd_soc_dapm_sync_unlocked(dapm);
562         snd_soc_dapm_mutex_unlock(dapm);
563 }
564 
565 static irqreturn_t es8316_irq(int irq, void *data)
566 {
567         struct es8316_priv *es8316 = data;
568         struct snd_soc_component *comp = es8316->component;
569         unsigned int flags;
570 
571         mutex_lock(&es8316->lock);
572 
573         regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
574         if (flags == 0x00)
575                 goto out; /* Powered-down / reset */
576 
577         /* Catch spurious IRQ before set_jack is called */
578         if (!es8316->jack)
579                 goto out;
580 
581         if (es8316->jd_inverted)
582                 flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
583 
584         dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
585         if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
586                 /* Jack removed, or spurious IRQ? */
587                 if (es8316->jack->status & SND_JACK_MICROPHONE)
588                         es8316_disable_micbias_for_mic_gnd_short_detect(comp);
589 
590                 if (es8316->jack->status & SND_JACK_HEADPHONE) {
591                         snd_soc_jack_report(es8316->jack, 0,
592                                             SND_JACK_HEADSET | SND_JACK_BTN_0);
593                         dev_dbg(comp->dev, "jack unplugged\n");
594                 }
595         } else if (!(es8316->jack->status & SND_JACK_HEADPHONE)) {
596                 /* Jack inserted, determine type */
597                 es8316_enable_micbias_for_mic_gnd_short_detect(comp);
598                 regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
599                 if (es8316->jd_inverted)
600                         flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
601                 dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
602                 if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
603                         /* Jack unplugged underneath us */
604                         es8316_disable_micbias_for_mic_gnd_short_detect(comp);
605                 } else if (flags & ES8316_GPIO_FLAG_GM_NOT_SHORTED) {
606                         /* Open, headset */
607                         snd_soc_jack_report(es8316->jack,
608                                             SND_JACK_HEADSET,
609                                             SND_JACK_HEADSET);
610                         /* Keep mic-gnd-short detection on for button press */
611                 } else {
612                         /* Shorted, headphones */
613                         snd_soc_jack_report(es8316->jack,
614                                             SND_JACK_HEADPHONE,
615                                             SND_JACK_HEADSET);
616                         /* No longer need mic-gnd-short detection */
617                         es8316_disable_micbias_for_mic_gnd_short_detect(comp);
618                 }
619         } else if (es8316->jack->status & SND_JACK_MICROPHONE) {
620                 /* Interrupt while jack inserted, report button state */
621                 if (flags & ES8316_GPIO_FLAG_GM_NOT_SHORTED) {
622                         /* Open, button release */
623                         snd_soc_jack_report(es8316->jack, 0, SND_JACK_BTN_0);
624                 } else {
625                         /* Short, button press */
626                         snd_soc_jack_report(es8316->jack,
627                                             SND_JACK_BTN_0,
628                                             SND_JACK_BTN_0);
629                 }
630         }
631 
632 out:
633         mutex_unlock(&es8316->lock);
634         return IRQ_HANDLED;
635 }
636 
637 static void es8316_enable_jack_detect(struct snd_soc_component *component,
638                                       struct snd_soc_jack *jack)
639 {
640         struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
641 
642         /*
643          * Init es8316->jd_inverted here and not in the probe, as we cannot
644          * guarantee that the bytchr-es8316 driver, which might set this
645          * property, will probe before us.
646          */
647         es8316->jd_inverted = device_property_read_bool(component->dev,
648                                                         "everest,jack-detect-inverted");
649 
650         mutex_lock(&es8316->lock);
651 
652         es8316->jack = jack;
653 
654         if (es8316->jack->status & SND_JACK_MICROPHONE)
655                 es8316_enable_micbias_for_mic_gnd_short_detect(component);
656 
657         snd_soc_component_update_bits(component, ES8316_GPIO_DEBOUNCE,
658                                       ES8316_GPIO_ENABLE_INTERRUPT,
659                                       ES8316_GPIO_ENABLE_INTERRUPT);
660 
661         mutex_unlock(&es8316->lock);
662 
663         /* Enable irq and sync initial jack state */
664         enable_irq(es8316->irq);
665         es8316_irq(es8316->irq, es8316);
666 }
667 
668 static void es8316_disable_jack_detect(struct snd_soc_component *component)
669 {
670         struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
671 
672         disable_irq(es8316->irq);
673 
674         mutex_lock(&es8316->lock);
675 
676         snd_soc_component_update_bits(component, ES8316_GPIO_DEBOUNCE,
677                                       ES8316_GPIO_ENABLE_INTERRUPT, 0);
678 
679         if (es8316->jack->status & SND_JACK_MICROPHONE) {
680                 es8316_disable_micbias_for_mic_gnd_short_detect(component);
681                 snd_soc_jack_report(es8316->jack, 0, SND_JACK_BTN_0);
682         }
683 
684         es8316->jack = NULL;
685 
686         mutex_unlock(&es8316->lock);
687 }
688 
689 static int es8316_set_jack(struct snd_soc_component *component,
690                            struct snd_soc_jack *jack, void *data)
691 {
692         if (jack)
693                 es8316_enable_jack_detect(component, jack);
694         else
695                 es8316_disable_jack_detect(component);
696 
697         return 0;
698 }
699 
700 static int es8316_probe(struct snd_soc_component *component)
701 {
702         struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
703 
704         es8316->component = component;
705 
706         /* Reset codec and enable current state machine */
707         snd_soc_component_write(component, ES8316_RESET, 0x3f);
708         usleep_range(5000, 5500);
709         snd_soc_component_write(component, ES8316_RESET, ES8316_RESET_CSM_ON);
710         msleep(30);
711 
712         /*
713          * Documentation is unclear, but this value from the vendor driver is
714          * needed otherwise audio output is silent.
715          */
716         snd_soc_component_write(component, ES8316_SYS_VMIDSEL, 0xff);
717 
718         /*
719          * Documentation for this register is unclear and incomplete,
720          * but here is a vendor-provided value that improves volume
721          * and quality for Intel CHT platforms.
722          */
723         snd_soc_component_write(component, ES8316_CLKMGR_ADCOSR, 0x32);
724 
725         return 0;
726 }
727 
728 static const struct snd_soc_component_driver soc_component_dev_es8316 = {
729         .probe                  = es8316_probe,
730         .set_jack               = es8316_set_jack,
731         .controls               = es8316_snd_controls,
732         .num_controls           = ARRAY_SIZE(es8316_snd_controls),
733         .dapm_widgets           = es8316_dapm_widgets,
734         .num_dapm_widgets       = ARRAY_SIZE(es8316_dapm_widgets),
735         .dapm_routes            = es8316_dapm_routes,
736         .num_dapm_routes        = ARRAY_SIZE(es8316_dapm_routes),
737         .use_pmdown_time        = 1,
738         .endianness             = 1,
739         .non_legacy_dai_naming  = 1,
740 };
741 
742 static const struct regmap_range es8316_volatile_ranges[] = {
743         regmap_reg_range(ES8316_GPIO_FLAG, ES8316_GPIO_FLAG),
744 };
745 
746 static const struct regmap_access_table es8316_volatile_table = {
747         .yes_ranges     = es8316_volatile_ranges,
748         .n_yes_ranges   = ARRAY_SIZE(es8316_volatile_ranges),
749 };
750 
751 static const struct regmap_config es8316_regmap = {
752         .reg_bits = 8,
753         .val_bits = 8,
754         .max_register = 0x53,
755         .volatile_table = &es8316_volatile_table,
756         .cache_type = REGCACHE_RBTREE,
757 };
758 
759 static int es8316_i2c_probe(struct i2c_client *i2c_client,
760                             const struct i2c_device_id *id)
761 {
762         struct device *dev = &i2c_client->dev;
763         struct es8316_priv *es8316;
764         int ret;
765 
766         es8316 = devm_kzalloc(&i2c_client->dev, sizeof(struct es8316_priv),
767                               GFP_KERNEL);
768         if (es8316 == NULL)
769                 return -ENOMEM;
770 
771         i2c_set_clientdata(i2c_client, es8316);
772 
773         es8316->regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap);
774         if (IS_ERR(es8316->regmap))
775                 return PTR_ERR(es8316->regmap);
776 
777         es8316->irq = i2c_client->irq;
778         mutex_init(&es8316->lock);
779 
780         ret = devm_request_threaded_irq(dev, es8316->irq, NULL, es8316_irq,
781                                         IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
782                                         "es8316", es8316);
783         if (ret == 0) {
784                 /* Gets re-enabled by es8316_set_jack() */
785                 disable_irq(es8316->irq);
786         } else {
787                 dev_warn(dev, "Failed to get IRQ %d: %d\n", es8316->irq, ret);
788                 es8316->irq = -ENXIO;
789         }
790 
791         return devm_snd_soc_register_component(&i2c_client->dev,
792                                       &soc_component_dev_es8316,
793                                       &es8316_dai, 1);
794 }
795 
796 static const struct i2c_device_id es8316_i2c_id[] = {
797         {"es8316", 0 },
798         {}
799 };
800 MODULE_DEVICE_TABLE(i2c, es8316_i2c_id);
801 
802 static const struct of_device_id es8316_of_match[] = {
803         { .compatible = "everest,es8316", },
804         {},
805 };
806 MODULE_DEVICE_TABLE(of, es8316_of_match);
807 
808 static const struct acpi_device_id es8316_acpi_match[] = {
809         {"ESSX8316", 0},
810         {},
811 };
812 MODULE_DEVICE_TABLE(acpi, es8316_acpi_match);
813 
814 static struct i2c_driver es8316_i2c_driver = {
815         .driver = {
816                 .name                   = "es8316",
817                 .acpi_match_table       = ACPI_PTR(es8316_acpi_match),
818                 .of_match_table         = of_match_ptr(es8316_of_match),
819         },
820         .probe          = es8316_i2c_probe,
821         .id_table       = es8316_i2c_id,
822 };
823 module_i2c_driver(es8316_i2c_driver);
824 
825 MODULE_DESCRIPTION("Everest Semi ES8316 ALSA SoC Codec Driver");
826 MODULE_AUTHOR("David Yang <yangxiaohua@everest-semi.com>");
827 MODULE_LICENSE("GPL v2");
828 

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