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Linux/sound/soc/codecs/ad193x.c

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  1 /*
  2  * AD193X Audio Codec driver supporting AD1936/7/8/9
  3  *
  4  * Copyright 2010 Analog Devices Inc.
  5  *
  6  * Licensed under the GPL-2 or later.
  7  */
  8 
  9 #include <linux/init.h>
 10 #include <linux/module.h>
 11 #include <linux/kernel.h>
 12 #include <linux/device.h>
 13 #include <linux/i2c.h>
 14 #include <linux/spi/spi.h>
 15 #include <linux/slab.h>
 16 #include <sound/core.h>
 17 #include <sound/pcm.h>
 18 #include <sound/pcm_params.h>
 19 #include <sound/initval.h>
 20 #include <sound/soc.h>
 21 #include <sound/tlv.h>
 22 #include "ad193x.h"
 23 
 24 /* codec private data */
 25 struct ad193x_priv {
 26         struct regmap *regmap;
 27         int sysclk;
 28 };
 29 
 30 /*
 31  * AD193X volume/mute/de-emphasis etc. controls
 32  */
 33 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
 34 
 35 static const struct soc_enum ad193x_deemp_enum =
 36         SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);
 37 
 38 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
 39 
 40 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
 41         /* DAC volume control */
 42         SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
 43                         AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
 44         SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
 45                         AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
 46         SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
 47                         AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
 48         SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
 49                         AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
 50 
 51         /* ADC switch control */
 52         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
 53                 AD193X_ADCR1_MUTE, 1, 1),
 54         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
 55                 AD193X_ADCR2_MUTE, 1, 1),
 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         /* ADC high-pass filter */
 68         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
 69                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
 70 
 71         /* DAC de-emphasis */
 72         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
 73 };
 74 
 75 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
 76         SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
 77         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
 78         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
 79         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
 80         SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
 81         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
 82         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
 83         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
 84         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
 85         SND_SOC_DAPM_INPUT("ADC1IN"),
 86         SND_SOC_DAPM_INPUT("ADC2IN"),
 87 };
 88 
 89 static const struct snd_soc_dapm_route audio_paths[] = {
 90         { "DAC", NULL, "SYSCLK" },
 91         { "ADC", NULL, "SYSCLK" },
 92         { "DAC", NULL, "ADC_PWR" },
 93         { "ADC", NULL, "ADC_PWR" },
 94         { "DAC1OUT", NULL, "DAC" },
 95         { "DAC2OUT", NULL, "DAC" },
 96         { "DAC3OUT", NULL, "DAC" },
 97         { "DAC4OUT", NULL, "DAC" },
 98         { "ADC", NULL, "ADC1IN" },
 99         { "ADC", NULL, "ADC2IN" },
100         { "SYSCLK", NULL, "PLL_PWR" },
101 };
102 
103 /*
104  * DAI ops entries
105  */
106 
107 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
108 {
109         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
110 
111         if (mute)
112                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
113                                     AD193X_DAC_MASTER_MUTE,
114                                     AD193X_DAC_MASTER_MUTE);
115         else
116                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
117                                     AD193X_DAC_MASTER_MUTE, 0);
118 
119         return 0;
120 }
121 
122 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
123                                unsigned int rx_mask, int slots, int width)
124 {
125         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
126         unsigned int channels;
127 
128         switch (slots) {
129         case 2:
130                 channels = AD193X_2_CHANNELS;
131                 break;
132         case 4:
133                 channels = AD193X_4_CHANNELS;
134                 break;
135         case 8:
136                 channels = AD193X_8_CHANNELS;
137                 break;
138         case 16:
139                 channels = AD193X_16_CHANNELS;
140                 break;
141         default:
142                 return -EINVAL;
143         }
144 
145         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
146                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
147         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
148                 AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
149 
150         return 0;
151 }
152 
153 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
154                 unsigned int fmt)
155 {
156         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
157         unsigned int adc_serfmt = 0;
158         unsigned int adc_fmt = 0;
159         unsigned int dac_fmt = 0;
160 
161         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
162          * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
163          */
164         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
165         case SND_SOC_DAIFMT_I2S:
166                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
167                 break;
168         case SND_SOC_DAIFMT_DSP_A:
169                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
170                 break;
171         default:
172                 return -EINVAL;
173         }
174 
175         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
176         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
177                 break;
178         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
179                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
180                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
181                 break;
182         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
183                 adc_fmt |= AD193X_ADC_BCLK_INV;
184                 dac_fmt |= AD193X_DAC_BCLK_INV;
185                 break;
186         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
187                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
188                 adc_fmt |= AD193X_ADC_BCLK_INV;
189                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
190                 dac_fmt |= AD193X_DAC_BCLK_INV;
191                 break;
192         default:
193                 return -EINVAL;
194         }
195 
196         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
197         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
198                 adc_fmt |= AD193X_ADC_LCR_MASTER;
199                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
200                 dac_fmt |= AD193X_DAC_LCR_MASTER;
201                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
202                 break;
203         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
204                 adc_fmt |= AD193X_ADC_LCR_MASTER;
205                 dac_fmt |= AD193X_DAC_LCR_MASTER;
206                 break;
207         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
208                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
209                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
210                 break;
211         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
212                 break;
213         default:
214                 return -EINVAL;
215         }
216 
217         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
218                 AD193X_ADC_SERFMT_MASK, adc_serfmt);
219         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
220                 AD193X_ADC_FMT_MASK, adc_fmt);
221         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
222                 AD193X_DAC_FMT_MASK, dac_fmt);
223 
224         return 0;
225 }
226 
227 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
228                 int clk_id, unsigned int freq, int dir)
229 {
230         struct snd_soc_codec *codec = codec_dai->codec;
231         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
232         switch (freq) {
233         case 12288000:
234         case 18432000:
235         case 24576000:
236         case 36864000:
237                 ad193x->sysclk = freq;
238                 return 0;
239         }
240         return -EINVAL;
241 }
242 
243 static int ad193x_hw_params(struct snd_pcm_substream *substream,
244                 struct snd_pcm_hw_params *params,
245                 struct snd_soc_dai *dai)
246 {
247         int word_len = 0, master_rate = 0;
248         struct snd_soc_codec *codec = dai->codec;
249         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
250 
251         /* bit size */
252         switch (params_format(params)) {
253         case SNDRV_PCM_FORMAT_S16_LE:
254                 word_len = 3;
255                 break;
256         case SNDRV_PCM_FORMAT_S20_3LE:
257                 word_len = 1;
258                 break;
259         case SNDRV_PCM_FORMAT_S24_LE:
260         case SNDRV_PCM_FORMAT_S32_LE:
261                 word_len = 0;
262                 break;
263         }
264 
265         switch (ad193x->sysclk) {
266         case 12288000:
267                 master_rate = AD193X_PLL_INPUT_256;
268                 break;
269         case 18432000:
270                 master_rate = AD193X_PLL_INPUT_384;
271                 break;
272         case 24576000:
273                 master_rate = AD193X_PLL_INPUT_512;
274                 break;
275         case 36864000:
276                 master_rate = AD193X_PLL_INPUT_768;
277                 break;
278         }
279 
280         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
281                             AD193X_PLL_INPUT_MASK, master_rate);
282 
283         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
284                             AD193X_DAC_WORD_LEN_MASK,
285                             word_len << AD193X_DAC_WORD_LEN_SHFT);
286 
287         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
288                             AD193X_ADC_WORD_LEN_MASK, word_len);
289 
290         return 0;
291 }
292 
293 static const struct snd_soc_dai_ops ad193x_dai_ops = {
294         .hw_params = ad193x_hw_params,
295         .digital_mute = ad193x_mute,
296         .set_tdm_slot = ad193x_set_tdm_slot,
297         .set_sysclk     = ad193x_set_dai_sysclk,
298         .set_fmt = ad193x_set_dai_fmt,
299 };
300 
301 /* codec DAI instance */
302 static struct snd_soc_dai_driver ad193x_dai = {
303         .name = "ad193x-hifi",
304         .playback = {
305                 .stream_name = "Playback",
306                 .channels_min = 2,
307                 .channels_max = 8,
308                 .rates = SNDRV_PCM_RATE_48000,
309                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
310                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
311         },
312         .capture = {
313                 .stream_name = "Capture",
314                 .channels_min = 2,
315                 .channels_max = 4,
316                 .rates = SNDRV_PCM_RATE_48000,
317                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
318                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
319         },
320         .ops = &ad193x_dai_ops,
321 };
322 
323 static int ad193x_probe(struct snd_soc_codec *codec)
324 {
325         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
326         int ret;
327 
328         codec->control_data = ad193x->regmap;
329         ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
330         if (ret < 0) {
331                 dev_err(codec->dev, "failed to set cache I/O: %d\n", ret);
332                 return ret;
333         }
334 
335         /* default setting for ad193x */
336 
337         /* unmute dac channels */
338         regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
339         /* de-emphasis: 48kHz, powedown dac */
340         regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
341         /* powerdown dac, dac in tdm mode */
342         regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x41);
343         /* high-pass filter enable */
344         regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
345         /* sata delay=1, adc aux mode */
346         regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
347         /* pll input: mclki/xi */
348         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
349         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
350 
351         return ret;
352 }
353 
354 static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
355         .probe =        ad193x_probe,
356         .controls = ad193x_snd_controls,
357         .num_controls = ARRAY_SIZE(ad193x_snd_controls),
358         .dapm_widgets = ad193x_dapm_widgets,
359         .num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
360         .dapm_routes = audio_paths,
361         .num_dapm_routes = ARRAY_SIZE(audio_paths),
362 };
363 
364 static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
365 {
366         return false;
367 }
368 
369 #if defined(CONFIG_SPI_MASTER)
370 
371 static const struct regmap_config ad193x_spi_regmap_config = {
372         .val_bits = 8,
373         .reg_bits = 16,
374         .read_flag_mask = 0x09,
375         .write_flag_mask = 0x08,
376 
377         .max_register = AD193X_NUM_REGS - 1,
378         .volatile_reg = adau193x_reg_volatile,
379 };
380 
381 static int ad193x_spi_probe(struct spi_device *spi)
382 {
383         struct ad193x_priv *ad193x;
384 
385         ad193x = devm_kzalloc(&spi->dev, sizeof(struct ad193x_priv),
386                               GFP_KERNEL);
387         if (ad193x == NULL)
388                 return -ENOMEM;
389 
390         ad193x->regmap = devm_regmap_init_spi(spi, &ad193x_spi_regmap_config);
391         if (IS_ERR(ad193x->regmap))
392                 return PTR_ERR(ad193x->regmap);
393 
394         spi_set_drvdata(spi, ad193x);
395 
396         return snd_soc_register_codec(&spi->dev, &soc_codec_dev_ad193x,
397                         &ad193x_dai, 1);
398 }
399 
400 static int ad193x_spi_remove(struct spi_device *spi)
401 {
402         snd_soc_unregister_codec(&spi->dev);
403         return 0;
404 }
405 
406 static struct spi_driver ad193x_spi_driver = {
407         .driver = {
408                 .name   = "ad193x",
409                 .owner  = THIS_MODULE,
410         },
411         .probe          = ad193x_spi_probe,
412         .remove         = ad193x_spi_remove,
413 };
414 #endif
415 
416 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
417 
418 static const struct regmap_config ad193x_i2c_regmap_config = {
419         .val_bits = 8,
420         .reg_bits = 8,
421 
422         .max_register = AD193X_NUM_REGS - 1,
423         .volatile_reg = adau193x_reg_volatile,
424 };
425 
426 static const struct i2c_device_id ad193x_id[] = {
427         { "ad1936", 0 },
428         { "ad1937", 0 },
429         { }
430 };
431 MODULE_DEVICE_TABLE(i2c, ad193x_id);
432 
433 static int ad193x_i2c_probe(struct i2c_client *client,
434                             const struct i2c_device_id *id)
435 {
436         struct ad193x_priv *ad193x;
437 
438         ad193x = devm_kzalloc(&client->dev, sizeof(struct ad193x_priv),
439                               GFP_KERNEL);
440         if (ad193x == NULL)
441                 return -ENOMEM;
442 
443         ad193x->regmap = devm_regmap_init_i2c(client, &ad193x_i2c_regmap_config);
444         if (IS_ERR(ad193x->regmap))
445                 return PTR_ERR(ad193x->regmap);
446 
447         i2c_set_clientdata(client, ad193x);
448 
449         return snd_soc_register_codec(&client->dev, &soc_codec_dev_ad193x,
450                         &ad193x_dai, 1);
451 }
452 
453 static int ad193x_i2c_remove(struct i2c_client *client)
454 {
455         snd_soc_unregister_codec(&client->dev);
456         return 0;
457 }
458 
459 static struct i2c_driver ad193x_i2c_driver = {
460         .driver = {
461                 .name = "ad193x",
462         },
463         .probe    = ad193x_i2c_probe,
464         .remove   = ad193x_i2c_remove,
465         .id_table = ad193x_id,
466 };
467 #endif
468 
469 static int __init ad193x_modinit(void)
470 {
471         int ret;
472 
473 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
474         ret =  i2c_add_driver(&ad193x_i2c_driver);
475         if (ret != 0) {
476                 printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
477                                 ret);
478         }
479 #endif
480 
481 #if defined(CONFIG_SPI_MASTER)
482         ret = spi_register_driver(&ad193x_spi_driver);
483         if (ret != 0) {
484                 printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
485                                 ret);
486         }
487 #endif
488         return ret;
489 }
490 module_init(ad193x_modinit);
491 
492 static void __exit ad193x_modexit(void)
493 {
494 #if defined(CONFIG_SPI_MASTER)
495         spi_unregister_driver(&ad193x_spi_driver);
496 #endif
497 
498 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
499         i2c_del_driver(&ad193x_i2c_driver);
500 #endif
501 }
502 module_exit(ad193x_modexit);
503 
504 MODULE_DESCRIPTION("ASoC ad193x driver");
505 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
506 MODULE_LICENSE("GPL");
507 

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