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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/ad193x.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * AD193X Audio Codec driver supporting AD1936/7/8/9
  4  *
  5  * Copyright 2010 Analog Devices Inc.
  6  */
  7 
  8 #include <linux/module.h>
  9 #include <linux/kernel.h>
 10 #include <linux/device.h>
 11 #include <linux/regmap.h>
 12 #include <linux/slab.h>
 13 #include <sound/core.h>
 14 #include <sound/pcm.h>
 15 #include <sound/pcm_params.h>
 16 #include <sound/initval.h>
 17 #include <sound/soc.h>
 18 #include <sound/tlv.h>
 19 
 20 #include "ad193x.h"
 21 
 22 /* codec private data */
 23 struct ad193x_priv {
 24         struct regmap *regmap;
 25         enum ad193x_type type;
 26         int sysclk;
 27 };
 28 
 29 /*
 30  * AD193X volume/mute/de-emphasis etc. controls
 31  */
 32 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
 33 
 34 static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
 35                             ad193x_deemp);
 36 
 37 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
 38 
 39 static const unsigned int ad193x_sb[] = {32};
 40 
 41 static struct snd_pcm_hw_constraint_list constr = {
 42         .list = ad193x_sb,
 43         .count = ARRAY_SIZE(ad193x_sb),
 44 };
 45 
 46 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
 47         /* DAC volume control */
 48         SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
 49                         AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
 50         SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
 51                         AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
 52         SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
 53                         AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
 54         SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
 55                         AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
 56 
 57         /* DAC switch control */
 58         SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
 59                 AD193X_DACR1_MUTE, 1, 1),
 60         SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
 61                 AD193X_DACR2_MUTE, 1, 1),
 62         SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
 63                 AD193X_DACR3_MUTE, 1, 1),
 64         SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
 65                 AD193X_DACR4_MUTE, 1, 1),
 66 
 67         /* DAC de-emphasis */
 68         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
 69 };
 70 
 71 static const struct snd_kcontrol_new ad193x_adc_snd_controls[] = {
 72         /* ADC switch control */
 73         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
 74                 AD193X_ADCR1_MUTE, 1, 1),
 75         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
 76                 AD193X_ADCR2_MUTE, 1, 1),
 77 
 78         /* ADC high-pass filter */
 79         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
 80                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
 81 };
 82 
 83 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
 84         SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
 85         SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
 86         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
 87         SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
 88         SND_SOC_DAPM_VMID("VMID"),
 89         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
 90         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
 91         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
 92         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
 93 };
 94 
 95 static const struct snd_soc_dapm_widget ad193x_adc_widgets[] = {
 96         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
 97         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
 98         SND_SOC_DAPM_INPUT("ADC1IN"),
 99         SND_SOC_DAPM_INPUT("ADC2IN"),
100 };
101 
102 static int ad193x_check_pll(struct snd_soc_dapm_widget *source,
103                             struct snd_soc_dapm_widget *sink)
104 {
105         struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
106         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
107 
108         return !!ad193x->sysclk;
109 }
110 
111 static const struct snd_soc_dapm_route audio_paths[] = {
112         { "DAC", NULL, "SYSCLK" },
113         { "DAC Output", NULL, "DAC" },
114         { "DAC Output", NULL, "VMID" },
115         { "DAC1OUT", NULL, "DAC Output" },
116         { "DAC2OUT", NULL, "DAC Output" },
117         { "DAC3OUT", NULL, "DAC Output" },
118         { "DAC4OUT", NULL, "DAC Output" },
119         { "SYSCLK", NULL, "PLL_PWR", &ad193x_check_pll },
120 };
121 
122 static const struct snd_soc_dapm_route ad193x_adc_audio_paths[] = {
123         { "ADC", NULL, "SYSCLK" },
124         { "ADC", NULL, "ADC_PWR" },
125         { "ADC", NULL, "ADC1IN" },
126         { "ADC", NULL, "ADC2IN" },
127 };
128 
129 static inline bool ad193x_has_adc(const struct ad193x_priv *ad193x)
130 {
131         switch (ad193x->type) {
132         case AD1933:
133         case AD1934:
134                 return false;
135         default:
136                 break;
137         }
138 
139         return true;
140 }
141 
142 /*
143  * DAI ops entries
144  */
145 
146 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
147 {
148         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
149 
150         if (mute)
151                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
152                                     AD193X_DAC_MASTER_MUTE,
153                                     AD193X_DAC_MASTER_MUTE);
154         else
155                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
156                                     AD193X_DAC_MASTER_MUTE, 0);
157 
158         return 0;
159 }
160 
161 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
162                                unsigned int rx_mask, int slots, int width)
163 {
164         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
165         unsigned int channels;
166 
167         switch (slots) {
168         case 2:
169                 channels = AD193X_2_CHANNELS;
170                 break;
171         case 4:
172                 channels = AD193X_4_CHANNELS;
173                 break;
174         case 8:
175                 channels = AD193X_8_CHANNELS;
176                 break;
177         case 16:
178                 channels = AD193X_16_CHANNELS;
179                 break;
180         default:
181                 return -EINVAL;
182         }
183 
184         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
185                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
186         if (ad193x_has_adc(ad193x))
187                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
188                                    AD193X_ADC_CHAN_MASK,
189                                    channels << AD193X_ADC_CHAN_SHFT);
190 
191         return 0;
192 }
193 
194 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
195                 unsigned int fmt)
196 {
197         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(codec_dai->component);
198         unsigned int adc_serfmt = 0;
199         unsigned int dac_serfmt = 0;
200         unsigned int adc_fmt = 0;
201         unsigned int dac_fmt = 0;
202 
203         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
204          * with TDM), ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) and DAC I2S mode
205          * (SND_SOC_DAIFMT_I2S)
206          */
207         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
208         case SND_SOC_DAIFMT_I2S:
209                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
210                 dac_serfmt |= AD193X_DAC_SERFMT_STEREO;
211                 break;
212         case SND_SOC_DAIFMT_DSP_A:
213                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
214                 dac_serfmt |= AD193X_DAC_SERFMT_TDM;
215                 break;
216         default:
217                 if (ad193x_has_adc(ad193x))
218                         return -EINVAL;
219         }
220 
221         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
222         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
223                 break;
224         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
225                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
226                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
227                 break;
228         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
229                 adc_fmt |= AD193X_ADC_BCLK_INV;
230                 dac_fmt |= AD193X_DAC_BCLK_INV;
231                 break;
232         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
233                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
234                 adc_fmt |= AD193X_ADC_BCLK_INV;
235                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
236                 dac_fmt |= AD193X_DAC_BCLK_INV;
237                 break;
238         default:
239                 return -EINVAL;
240         }
241 
242         /* For DSP_*, LRCLK's polarity must be inverted */
243         if (fmt & SND_SOC_DAIFMT_DSP_A) {
244                 change_bit(ffs(AD193X_DAC_LEFT_HIGH) - 1,
245                            (unsigned long *)&dac_fmt);
246         }
247 
248         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
249         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
250                 adc_fmt |= AD193X_ADC_LCR_MASTER;
251                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
252                 dac_fmt |= AD193X_DAC_LCR_MASTER;
253                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
254                 break;
255         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
256                 adc_fmt |= AD193X_ADC_LCR_MASTER;
257                 dac_fmt |= AD193X_DAC_LCR_MASTER;
258                 break;
259         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
260                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
261                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
262                 break;
263         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
264                 break;
265         default:
266                 return -EINVAL;
267         }
268 
269         if (ad193x_has_adc(ad193x)) {
270                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
271                                    AD193X_ADC_SERFMT_MASK, adc_serfmt);
272                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
273                                    AD193X_ADC_FMT_MASK, adc_fmt);
274         }
275         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0,
276                            AD193X_DAC_SERFMT_MASK, dac_serfmt);
277         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
278                 AD193X_DAC_FMT_MASK, dac_fmt);
279 
280         return 0;
281 }
282 
283 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
284                 int clk_id, unsigned int freq, int dir)
285 {
286         struct snd_soc_component *component = codec_dai->component;
287         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
288         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
289 
290         if (clk_id == AD193X_SYSCLK_MCLK) {
291                 /* MCLK must be 512 x fs */
292                 if (dir == SND_SOC_CLOCK_OUT || freq != 24576000)
293                         return -EINVAL;
294 
295                 regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL1,
296                                    AD193X_PLL_SRC_MASK,
297                                    AD193X_PLL_DAC_SRC_MCLK |
298                                    AD193X_PLL_CLK_SRC_MCLK);
299 
300                 snd_soc_dapm_sync(dapm);
301                 return 0;
302         }
303         switch (freq) {
304         case 12288000:
305         case 18432000:
306         case 24576000:
307         case 36864000:
308                 ad193x->sysclk = freq;
309                 return 0;
310         }
311         return -EINVAL;
312 }
313 
314 static int ad193x_hw_params(struct snd_pcm_substream *substream,
315                 struct snd_pcm_hw_params *params,
316                 struct snd_soc_dai *dai)
317 {
318         int word_len = 0, master_rate = 0;
319         struct snd_soc_component *component = dai->component;
320         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
321 
322         /* bit size */
323         switch (params_width(params)) {
324         case 16:
325                 word_len = 3;
326                 break;
327         case 20:
328                 word_len = 1;
329                 break;
330         case 24:
331         case 32:
332                 word_len = 0;
333                 break;
334         }
335 
336         switch (ad193x->sysclk) {
337         case 12288000:
338                 master_rate = AD193X_PLL_INPUT_256;
339                 break;
340         case 18432000:
341                 master_rate = AD193X_PLL_INPUT_384;
342                 break;
343         case 24576000:
344                 master_rate = AD193X_PLL_INPUT_512;
345                 break;
346         case 36864000:
347                 master_rate = AD193X_PLL_INPUT_768;
348                 break;
349         }
350 
351         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
352                             AD193X_PLL_INPUT_MASK, master_rate);
353 
354         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
355                             AD193X_DAC_WORD_LEN_MASK,
356                             word_len << AD193X_DAC_WORD_LEN_SHFT);
357 
358         if (ad193x_has_adc(ad193x))
359                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
360                                    AD193X_ADC_WORD_LEN_MASK, word_len);
361 
362         return 0;
363 }
364 
365 static int ad193x_startup(struct snd_pcm_substream *substream,
366                           struct snd_soc_dai *dai)
367 {
368         return snd_pcm_hw_constraint_list(substream->runtime, 0,
369                                    SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
370                                    &constr);
371 }
372 
373 static const struct snd_soc_dai_ops ad193x_dai_ops = {
374         .startup = ad193x_startup,
375         .hw_params = ad193x_hw_params,
376         .digital_mute = ad193x_mute,
377         .set_tdm_slot = ad193x_set_tdm_slot,
378         .set_sysclk     = ad193x_set_dai_sysclk,
379         .set_fmt = ad193x_set_dai_fmt,
380 };
381 
382 /* codec DAI instance */
383 static struct snd_soc_dai_driver ad193x_dai = {
384         .name = "ad193x-hifi",
385         .playback = {
386                 .stream_name = "Playback",
387                 .channels_min = 2,
388                 .channels_max = 8,
389                 .rates = SNDRV_PCM_RATE_48000,
390                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
391                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
392         },
393         .capture = {
394                 .stream_name = "Capture",
395                 .channels_min = 2,
396                 .channels_max = 4,
397                 .rates = SNDRV_PCM_RATE_48000,
398                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
399                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
400         },
401         .ops = &ad193x_dai_ops,
402 };
403 
404 /* codec DAI instance for DAC only */
405 static struct snd_soc_dai_driver ad193x_no_adc_dai = {
406         .name = "ad193x-hifi",
407         .playback = {
408                 .stream_name = "Playback",
409                 .channels_min = 2,
410                 .channels_max = 8,
411                 .rates = SNDRV_PCM_RATE_48000,
412                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
413                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
414         },
415         .ops = &ad193x_dai_ops,
416 };
417 
418 static int ad193x_component_probe(struct snd_soc_component *component)
419 {
420         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
421         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
422         int num, ret;
423 
424         /* default setting for ad193x */
425 
426         /* unmute dac channels */
427         regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
428         /* de-emphasis: 48kHz, powedown dac */
429         regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
430         /* dac in tdm mode */
431         regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
432 
433         /* adc only */
434         if (ad193x_has_adc(ad193x)) {
435                 /* high-pass filter enable */
436                 regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
437                 /* sata delay=1, adc aux mode */
438                 regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
439         }
440 
441         /* pll input: mclki/xi */
442         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
443         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
444 
445         /* adc only */
446         if (ad193x_has_adc(ad193x)) {
447                 /* add adc controls */
448                 num = ARRAY_SIZE(ad193x_adc_snd_controls);
449                 ret = snd_soc_add_component_controls(component,
450                                                  ad193x_adc_snd_controls,
451                                                  num);
452                 if (ret)
453                         return ret;
454 
455                 /* add adc widgets */
456                 num = ARRAY_SIZE(ad193x_adc_widgets);
457                 ret = snd_soc_dapm_new_controls(dapm,
458                                                 ad193x_adc_widgets,
459                                                 num);
460                 if (ret)
461                         return ret;
462 
463                 /* add adc routes */
464                 num = ARRAY_SIZE(ad193x_adc_audio_paths);
465                 ret = snd_soc_dapm_add_routes(dapm,
466                                               ad193x_adc_audio_paths,
467                                               num);
468                 if (ret)
469                         return ret;
470         }
471 
472         return 0;
473 }
474 
475 static const struct snd_soc_component_driver soc_component_dev_ad193x = {
476         .probe                  = ad193x_component_probe,
477         .controls               = ad193x_snd_controls,
478         .num_controls           = ARRAY_SIZE(ad193x_snd_controls),
479         .dapm_widgets           = ad193x_dapm_widgets,
480         .num_dapm_widgets       = ARRAY_SIZE(ad193x_dapm_widgets),
481         .dapm_routes            = audio_paths,
482         .num_dapm_routes        = ARRAY_SIZE(audio_paths),
483         .idle_bias_on           = 1,
484         .use_pmdown_time        = 1,
485         .endianness             = 1,
486         .non_legacy_dai_naming  = 1,
487 };
488 
489 const struct regmap_config ad193x_regmap_config = {
490         .max_register = AD193X_NUM_REGS - 1,
491 };
492 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
493 
494 int ad193x_probe(struct device *dev, struct regmap *regmap,
495                  enum ad193x_type type)
496 {
497         struct ad193x_priv *ad193x;
498 
499         if (IS_ERR(regmap))
500                 return PTR_ERR(regmap);
501 
502         ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
503         if (ad193x == NULL)
504                 return -ENOMEM;
505 
506         ad193x->regmap = regmap;
507         ad193x->type = type;
508 
509         dev_set_drvdata(dev, ad193x);
510 
511         if (ad193x_has_adc(ad193x))
512                 return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
513                                                        &ad193x_dai, 1);
514         return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
515                 &ad193x_no_adc_dai, 1);
516 }
517 EXPORT_SYMBOL_GPL(ad193x_probe);
518 
519 MODULE_DESCRIPTION("ASoC ad193x driver");
520 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
521 MODULE_LICENSE("GPL");
522 

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