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 SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum, 44 AD1836_DAC_CTRL1, 8, 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_width(params)) { 172 case 16: 173 word_len = AD1836_WORD_LEN_16; 174 break; 175 case 20: 176 word_len = AD1836_WORD_LEN_20; 177 break; 178 case 24: 179 case 32: 180 word_len = AD1836_WORD_LEN_24; 181 break; 182 default: 183 return -EINVAL; 184 } 185 186 regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1, 187 AD1836_DAC_WORD_LEN_MASK, 188 word_len << AD1836_DAC_WORD_LEN_OFFSET); 189 190 regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 191 AD1836_ADC_WORD_LEN_MASK, 192 word_len << AD1836_ADC_WORD_OFFSET); 193 194 return 0; 195 } 196 197 static const struct snd_soc_dai_ops ad1836_dai_ops = { 198 .hw_params = ad1836_hw_params, 199 .set_fmt = ad1836_set_dai_fmt, 200 }; 201 202 #define AD183X_DAI(_name, num_dacs, num_adcs) \ 203 { \ 204 .name = _name "-hifi", \ 205 .playback = { \ 206 .stream_name = "Playback", \ 207 .channels_min = 2, \ 208 .channels_max = (num_dacs) * 2, \ 209 .rates = SNDRV_PCM_RATE_48000, \ 210 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 211 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 212 }, \ 213 .capture = { \ 214 .stream_name = "Capture", \ 215 .channels_min = 2, \ 216 .channels_max = (num_adcs) * 2, \ 217 .rates = SNDRV_PCM_RATE_48000, \ 218 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 219 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 220 }, \ 221 .ops = &ad1836_dai_ops, \ 222 } 223 224 static struct snd_soc_dai_driver ad183x_dais[] = { 225 [AD1835] = AD183X_DAI("ad1835", 4, 1), 226 [AD1836] = AD183X_DAI("ad1836", 3, 2), 227 [AD1838] = AD183X_DAI("ad1838", 3, 1), 228 }; 229 230 #ifdef CONFIG_PM 231 static int ad1836_suspend(struct snd_soc_codec *codec) 232 { 233 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 234 /* reset clock control mode */ 235 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 236 AD1836_ADC_SERFMT_MASK, 0); 237 } 238 239 static int ad1836_resume(struct snd_soc_codec *codec) 240 { 241 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 242 /* restore clock control mode */ 243 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 244 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX); 245 } 246 #else 247 #define ad1836_suspend NULL 248 #define ad1836_resume NULL 249 #endif 250 251 static int ad1836_probe(struct snd_soc_codec *codec) 252 { 253 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 254 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); 255 int num_dacs, num_adcs; 256 int ret = 0; 257 int i; 258 259 num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2; 260 num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2; 261 262 /* default setting for ad1836 */ 263 /* de-emphasis: 48kHz, power-on dac */ 264 regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300); 265 /* unmute dac channels */ 266 regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0); 267 /* high-pass filter enable, power-on adc */ 268 regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100); 269 /* unmute adc channles, adc aux mode */ 270 regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180); 271 /* volume */ 272 for (i = 1; i <= num_dacs; ++i) { 273 regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF); 274 regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF); 275 } 276 277 if (ad1836->type == AD1836) { 278 /* left/right diff:PGA/MUX */ 279 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A); 280 ret = snd_soc_add_codec_controls(codec, ad1836_controls, 281 ARRAY_SIZE(ad1836_controls)); 282 if (ret) 283 return ret; 284 } else { 285 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00); 286 } 287 288 ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2); 289 if (ret) 290 return ret; 291 292 ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs); 293 if (ret) 294 return ret; 295 296 ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs); 297 if (ret) 298 return ret; 299 300 ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs); 301 if (ret) 302 return ret; 303 304 ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs); 305 if (ret) 306 return ret; 307 308 ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs); 309 if (ret) 310 return ret; 311 312 return ret; 313 } 314 315 /* power down chip */ 316 static int ad1836_remove(struct snd_soc_codec *codec) 317 { 318 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 319 /* reset clock control mode */ 320 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2, 321 AD1836_ADC_SERFMT_MASK, 0); 322 } 323 324 static const struct snd_soc_codec_driver soc_codec_dev_ad1836 = { 325 .probe = ad1836_probe, 326 .remove = ad1836_remove, 327 .suspend = ad1836_suspend, 328 .resume = ad1836_resume, 329 330 .component_driver = { 331 .controls = ad183x_controls, 332 .num_controls = ARRAY_SIZE(ad183x_controls), 333 .dapm_widgets = ad183x_dapm_widgets, 334 .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets), 335 .dapm_routes = ad183x_dapm_routes, 336 .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes), 337 }, 338 }; 339 340 static const struct reg_default ad1836_reg_defaults[] = { 341 { AD1836_DAC_CTRL1, 0x0000 }, 342 { AD1836_DAC_CTRL2, 0x0000 }, 343 { AD1836_DAC_L_VOL(0), 0x0000 }, 344 { AD1836_DAC_R_VOL(0), 0x0000 }, 345 { AD1836_DAC_L_VOL(1), 0x0000 }, 346 { AD1836_DAC_R_VOL(1), 0x0000 }, 347 { AD1836_DAC_L_VOL(2), 0x0000 }, 348 { AD1836_DAC_R_VOL(2), 0x0000 }, 349 { AD1836_DAC_L_VOL(3), 0x0000 }, 350 { AD1836_DAC_R_VOL(3), 0x0000 }, 351 { AD1836_ADC_CTRL1, 0x0000 }, 352 { AD1836_ADC_CTRL2, 0x0000 }, 353 { AD1836_ADC_CTRL3, 0x0000 }, 354 }; 355 356 static const struct regmap_config ad1836_regmap_config = { 357 .val_bits = 12, 358 .reg_bits = 4, 359 .read_flag_mask = 0x08, 360 361 .max_register = AD1836_ADC_CTRL3, 362 .reg_defaults = ad1836_reg_defaults, 363 .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults), 364 .cache_type = REGCACHE_RBTREE, 365 }; 366 367 static int ad1836_spi_probe(struct spi_device *spi) 368 { 369 struct ad1836_priv *ad1836; 370 int ret; 371 372 ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv), 373 GFP_KERNEL); 374 if (ad1836 == NULL) 375 return -ENOMEM; 376 377 ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config); 378 if (IS_ERR(ad1836->regmap)) 379 return PTR_ERR(ad1836->regmap); 380 381 ad1836->type = spi_get_device_id(spi)->driver_data; 382 383 spi_set_drvdata(spi, ad1836); 384 385 ret = snd_soc_register_codec(&spi->dev, 386 &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1); 387 return ret; 388 } 389 390 static int ad1836_spi_remove(struct spi_device *spi) 391 { 392 snd_soc_unregister_codec(&spi->dev); 393 return 0; 394 } 395 396 static const struct spi_device_id ad1836_ids[] = { 397 { "ad1835", AD1835 }, 398 { "ad1836", AD1836 }, 399 { "ad1837", AD1835 }, 400 { "ad1838", AD1838 }, 401 { "ad1839", AD1838 }, 402 { }, 403 }; 404 MODULE_DEVICE_TABLE(spi, ad1836_ids); 405 406 static struct spi_driver ad1836_spi_driver = { 407 .driver = { 408 .name = "ad1836", 409 }, 410 .probe = ad1836_spi_probe, 411 .remove = ad1836_spi_remove, 412 .id_table = ad1836_ids, 413 }; 414 415 module_spi_driver(ad1836_spi_driver); 416 417 MODULE_DESCRIPTION("ASoC ad1836 driver"); 418 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 419 MODULE_LICENSE("GPL"); 420