1 /* 2 * Audio Codec driver supporting: 3 * AD1835A, AD1836, AD1837A, AD1838A, AD1839A 4 * 5 * Copyright 2009-2011 Analog Devices Inc. 6 * 7 * Licensed under the GPL-2 or later. 8 */ 9 10 #include <linux/init.h> 11 #include <linux/slab.h> 12 #include <linux/module.h> 13 #include <linux/kernel.h> 14 #include <linux/device.h> 15 #include <sound/core.h> 16 #include <sound/pcm.h> 17 #include <sound/pcm_params.h> 18 #include <sound/initval.h> 19 #include <sound/soc.h> 20 #include <sound/tlv.h> 21 #include <linux/spi/spi.h> 22 #include <linux/regmap.h> 23 24 #include "ad1836.h" 25 26 enum ad1836_type { 27 AD1835, 28 AD1836, 29 AD1838, 30 }; 31 32 /* codec private data */ 33 struct ad1836_priv { 34 enum ad1836_type type; 35 struct regmap *regmap; 36 }; 37 38 /* 39 * AD1836 volume/mute/de-emphasis etc. controls 40 */ 41 static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"}; 42 43 static const struct soc_enum ad1836_deemp_enum = 44 SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp); 45 46 #define AD1836_DAC_VOLUME(x) \ 47 SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \ 48 AD1836_DAC_R_VOL(x), 0, 0x3FF, 0) 49 50 #define AD1836_DAC_SWITCH(x) \ 51 SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \ 52 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) 53 54 #define AD1836_ADC_SWITCH(x) \ 55 SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \ 56 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) 57 58 static const struct snd_kcontrol_new ad183x_dac_controls[] = { 59 AD1836_DAC_VOLUME(1), 60 AD1836_DAC_SWITCH(1), 61 AD1836_DAC_VOLUME(2), 62 AD1836_DAC_SWITCH(2), 63 AD1836_DAC_VOLUME(3), 64 AD1836_DAC_SWITCH(3), 65 AD1836_DAC_VOLUME(4), 66 AD1836_DAC_SWITCH(4), 67 }; 68 69 static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = { 70 SND_SOC_DAPM_OUTPUT("DAC1OUT"), 71 SND_SOC_DAPM_OUTPUT("DAC2OUT"), 72 SND_SOC_DAPM_OUTPUT("DAC3OUT"), 73 SND_SOC_DAPM_OUTPUT("DAC4OUT"), 74 }; 75 76 static const struct snd_soc_dapm_route ad183x_dac_routes[] = { 77 { "DAC1OUT", NULL, "DAC" }, 78 { "DAC2OUT", NULL, "DAC" }, 79 { "DAC3OUT", NULL, "DAC" }, 80 { "DAC4OUT", NULL, "DAC" }, 81 }; 82 83 static const struct snd_kcontrol_new ad183x_adc_controls[] = { 84 AD1836_ADC_SWITCH(1), 85 AD1836_ADC_SWITCH(2), 86 AD1836_ADC_SWITCH(3), 87 }; 88 89 static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = { 90 SND_SOC_DAPM_INPUT("ADC1IN"), 91 SND_SOC_DAPM_INPUT("ADC2IN"), 92 }; 93 94 static const struct snd_soc_dapm_route ad183x_adc_routes[] = { 95 { "ADC", NULL, "ADC1IN" }, 96 { "ADC", NULL, "ADC2IN" }, 97 }; 98 99 static const struct snd_kcontrol_new ad183x_controls[] = { 100 /* ADC high-pass filter */ 101 SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1, 102 AD1836_ADC_HIGHPASS_FILTER, 1, 0), 103 104 /* DAC de-emphasis */ 105 SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum), 106 }; 107 108 static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = { 109 SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1, 110 AD1836_DAC_POWERDOWN, 1), 111 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), 112 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1, 113 AD1836_ADC_POWERDOWN, 1, NULL, 0), 114 }; 115 116 static const struct snd_soc_dapm_route ad183x_dapm_routes[] = { 117 { "DAC", NULL, "ADC_PWR" }, 118 { "ADC", NULL, "ADC_PWR" }, 119 }; 120 121 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0); 122 123 static const struct snd_kcontrol_new ad1836_controls[] = { 124 SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0, 125 ad1836_in_tlv), 126 }; 127 128 /* 129 * DAI ops entries 130 */ 131 132 static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai, 133 unsigned int fmt) 134 { 135 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 136 /* at present, we support adc aux mode to interface with 137 * blackfin sport tdm mode 138 */ 139 case SND_SOC_DAIFMT_DSP_A: 140 break; 141 default: 142 return -EINVAL; 143 } 144 145 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 146 case SND_SOC_DAIFMT_IB_IF: 147 break; 148 default: 149 return -EINVAL; 150 } 151 152 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 153 /* ALCLK,ABCLK are both output, AD1836 can only be master */ 154 case SND_SOC_DAIFMT_CBM_CFM: 155 break; 156 default: 157 return -EINVAL; 158 } 159 160 return 0; 161 } 162 163 static int ad1836_hw_params(struct snd_pcm_substream *substream, 164 struct snd_pcm_hw_params *params, 165 struct snd_soc_dai *dai) 166 { 167 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(dai->codec); 168 int word_len = 0; 169 170 /* bit size */ 171 switch (params_format(params)) { 172 case SNDRV_PCM_FORMAT_S16_LE: 173 word_len = AD1836_WORD_LEN_16; 174 break; 175 case SNDRV_PCM_FORMAT_S20_3LE: 176 word_len = AD1836_WORD_LEN_20; 177 break; 178 case SNDRV_PCM_FORMAT_S24_LE: 179 case SNDRV_PCM_FORMAT_S32_LE: 180 word_len = AD1836_WORD_LEN_24; 181 break; 182 } 183 184 regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1, 185 AD1836_DAC_WORD_LEN_MASK, 186 word_len << AD1836_DAC_WORD_LEN_OFFSET); 187 188 regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 189 AD1836_ADC_WORD_LEN_MASK, 190 word_len << AD1836_ADC_WORD_OFFSET); 191 192 return 0; 193 } 194 195 static const struct snd_soc_dai_ops ad1836_dai_ops = { 196 .hw_params = ad1836_hw_params, 197 .set_fmt = ad1836_set_dai_fmt, 198 }; 199 200 #define AD183X_DAI(_name, num_dacs, num_adcs) \ 201 { \ 202 .name = _name "-hifi", \ 203 .playback = { \ 204 .stream_name = "Playback", \ 205 .channels_min = 2, \ 206 .channels_max = (num_dacs) * 2, \ 207 .rates = SNDRV_PCM_RATE_48000, \ 208 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 209 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 210 }, \ 211 .capture = { \ 212 .stream_name = "Capture", \ 213 .channels_min = 2, \ 214 .channels_max = (num_adcs) * 2, \ 215 .rates = SNDRV_PCM_RATE_48000, \ 216 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 217 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 218 }, \ 219 .ops = &ad1836_dai_ops, \ 220 } 221 222 static struct snd_soc_dai_driver ad183x_dais[] = { 223 [AD1835] = AD183X_DAI("ad1835", 4, 1), 224 [AD1836] = AD183X_DAI("ad1836", 3, 2), 225 [AD1838] = AD183X_DAI("ad1838", 3, 1), 226 }; 227 228 #ifdef CONFIG_PM 229 static int ad1836_suspend(struct snd_soc_codec *codec) 230 { 231 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 232 /* reset clock control mode */ 233 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 234 AD1836_ADC_SERFMT_MASK, 0); 235 } 236 237 static int ad1836_resume(struct snd_soc_codec *codec) 238 { 239 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 240 /* restore clock control mode */ 241 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 242 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX); 243 } 244 #else 245 #define ad1836_suspend NULL 246 #define ad1836_resume NULL 247 #endif 248 249 static int ad1836_probe(struct snd_soc_codec *codec) 250 { 251 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 252 struct snd_soc_dapm_context *dapm = &codec->dapm; 253 int num_dacs, num_adcs; 254 int ret = 0; 255 int i; 256 257 num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2; 258 num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2; 259 260 /* default setting for ad1836 */ 261 /* de-emphasis: 48kHz, power-on dac */ 262 regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300); 263 /* unmute dac channels */ 264 regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0); 265 /* high-pass filter enable, power-on adc */ 266 regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100); 267 /* unmute adc channles, adc aux mode */ 268 regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180); 269 /* volume */ 270 for (i = 1; i <= num_dacs; ++i) { 271 regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF); 272 regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF); 273 } 274 275 if (ad1836->type == AD1836) { 276 /* left/right diff:PGA/MUX */ 277 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A); 278 ret = snd_soc_add_codec_controls(codec, ad1836_controls, 279 ARRAY_SIZE(ad1836_controls)); 280 if (ret) 281 return ret; 282 } else { 283 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00); 284 } 285 286 ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2); 287 if (ret) 288 return ret; 289 290 ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs); 291 if (ret) 292 return ret; 293 294 ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs); 295 if (ret) 296 return ret; 297 298 ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs); 299 if (ret) 300 return ret; 301 302 ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs); 303 if (ret) 304 return ret; 305 306 ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs); 307 if (ret) 308 return ret; 309 310 return ret; 311 } 312 313 /* power down chip */ 314 static int ad1836_remove(struct snd_soc_codec *codec) 315 { 316 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 317 /* reset clock control mode */ 318 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 319 AD1836_ADC_SERFMT_MASK, 0); 320 } 321 322 static struct snd_soc_codec_driver soc_codec_dev_ad1836 = { 323 .probe = ad1836_probe, 324 .remove = ad1836_remove, 325 .suspend = ad1836_suspend, 326 .resume = ad1836_resume, 327 328 .controls = ad183x_controls, 329 .num_controls = ARRAY_SIZE(ad183x_controls), 330 .dapm_widgets = ad183x_dapm_widgets, 331 .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets), 332 .dapm_routes = ad183x_dapm_routes, 333 .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes), 334 }; 335 336 static const struct reg_default ad1836_reg_defaults[] = { 337 { AD1836_DAC_CTRL1, 0x0000 }, 338 { AD1836_DAC_CTRL2, 0x0000 }, 339 { AD1836_DAC_L_VOL(0), 0x0000 }, 340 { AD1836_DAC_R_VOL(0), 0x0000 }, 341 { AD1836_DAC_L_VOL(1), 0x0000 }, 342 { AD1836_DAC_R_VOL(1), 0x0000 }, 343 { AD1836_DAC_L_VOL(2), 0x0000 }, 344 { AD1836_DAC_R_VOL(2), 0x0000 }, 345 { AD1836_DAC_L_VOL(3), 0x0000 }, 346 { AD1836_DAC_R_VOL(3), 0x0000 }, 347 { AD1836_ADC_CTRL1, 0x0000 }, 348 { AD1836_ADC_CTRL2, 0x0000 }, 349 { AD1836_ADC_CTRL3, 0x0000 }, 350 }; 351 352 static const struct regmap_config ad1836_regmap_config = { 353 .val_bits = 12, 354 .reg_bits = 4, 355 .read_flag_mask = 0x08, 356 357 .max_register = AD1836_ADC_CTRL3, 358 .reg_defaults = ad1836_reg_defaults, 359 .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults), 360 .cache_type = REGCACHE_RBTREE, 361 }; 362 363 static int ad1836_spi_probe(struct spi_device *spi) 364 { 365 struct ad1836_priv *ad1836; 366 int ret; 367 368 ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv), 369 GFP_KERNEL); 370 if (ad1836 == NULL) 371 return -ENOMEM; 372 373 ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config); 374 if (IS_ERR(ad1836->regmap)) 375 return PTR_ERR(ad1836->regmap); 376 377 ad1836->type = spi_get_device_id(spi)->driver_data; 378 379 spi_set_drvdata(spi, ad1836); 380 381 ret = snd_soc_register_codec(&spi->dev, 382 &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1); 383 return ret; 384 } 385 386 static int ad1836_spi_remove(struct spi_device *spi) 387 { 388 snd_soc_unregister_codec(&spi->dev); 389 return 0; 390 } 391 392 static const struct spi_device_id ad1836_ids[] = { 393 { "ad1835", AD1835 }, 394 { "ad1836", AD1836 }, 395 { "ad1837", AD1835 }, 396 { "ad1838", AD1838 }, 397 { "ad1839", AD1838 }, 398 { }, 399 }; 400 MODULE_DEVICE_TABLE(spi, ad1836_ids); 401 402 static struct spi_driver ad1836_spi_driver = { 403 .driver = { 404 .name = "ad1836", 405 .owner = THIS_MODULE, 406 }, 407 .probe = ad1836_spi_probe, 408 .remove = ad1836_spi_remove, 409 .id_table = ad1836_ids, 410 }; 411 412 module_spi_driver(ad1836_spi_driver); 413 414 MODULE_DESCRIPTION("ASoC ad1836 driver"); 415 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 416 MODULE_LICENSE("GPL"); 417