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 "ad1836.h" 23 24 enum ad1836_type { 25 AD1835, 26 AD1836, 27 AD1838, 28 }; 29 30 /* codec private data */ 31 struct ad1836_priv { 32 enum ad1836_type type; 33 }; 34 35 /* 36 * AD1836 volume/mute/de-emphasis etc. controls 37 */ 38 static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"}; 39 40 static const struct soc_enum ad1836_deemp_enum = 41 SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp); 42 43 #define AD1836_DAC_VOLUME(x) \ 44 SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \ 45 AD1836_DAC_R_VOL(x), 0, 0x3FF, 0) 46 47 #define AD1836_DAC_SWITCH(x) \ 48 SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \ 49 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) 50 51 #define AD1836_ADC_SWITCH(x) \ 52 SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \ 53 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) 54 55 static const struct snd_kcontrol_new ad183x_dac_controls[] = { 56 AD1836_DAC_VOLUME(1), 57 AD1836_DAC_SWITCH(1), 58 AD1836_DAC_VOLUME(2), 59 AD1836_DAC_SWITCH(2), 60 AD1836_DAC_VOLUME(3), 61 AD1836_DAC_SWITCH(3), 62 AD1836_DAC_VOLUME(4), 63 AD1836_DAC_SWITCH(4), 64 }; 65 66 static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = { 67 SND_SOC_DAPM_OUTPUT("DAC1OUT"), 68 SND_SOC_DAPM_OUTPUT("DAC2OUT"), 69 SND_SOC_DAPM_OUTPUT("DAC3OUT"), 70 SND_SOC_DAPM_OUTPUT("DAC4OUT"), 71 }; 72 73 static const struct snd_soc_dapm_route ad183x_dac_routes[] = { 74 { "DAC1OUT", NULL, "DAC" }, 75 { "DAC2OUT", NULL, "DAC" }, 76 { "DAC3OUT", NULL, "DAC" }, 77 { "DAC4OUT", NULL, "DAC" }, 78 }; 79 80 static const struct snd_kcontrol_new ad183x_adc_controls[] = { 81 AD1836_ADC_SWITCH(1), 82 AD1836_ADC_SWITCH(2), 83 AD1836_ADC_SWITCH(3), 84 }; 85 86 static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = { 87 SND_SOC_DAPM_INPUT("ADC1IN"), 88 SND_SOC_DAPM_INPUT("ADC2IN"), 89 }; 90 91 static const struct snd_soc_dapm_route ad183x_adc_routes[] = { 92 { "ADC", NULL, "ADC1IN" }, 93 { "ADC", NULL, "ADC2IN" }, 94 }; 95 96 static const struct snd_kcontrol_new ad183x_controls[] = { 97 /* ADC high-pass filter */ 98 SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1, 99 AD1836_ADC_HIGHPASS_FILTER, 1, 0), 100 101 /* DAC de-emphasis */ 102 SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum), 103 }; 104 105 static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = { 106 SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1, 107 AD1836_DAC_POWERDOWN, 1), 108 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), 109 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1, 110 AD1836_ADC_POWERDOWN, 1, NULL, 0), 111 }; 112 113 static const struct snd_soc_dapm_route ad183x_dapm_routes[] = { 114 { "DAC", NULL, "ADC_PWR" }, 115 { "ADC", NULL, "ADC_PWR" }, 116 }; 117 118 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0); 119 120 static const struct snd_kcontrol_new ad1836_controls[] = { 121 SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0, 122 ad1836_in_tlv), 123 }; 124 125 /* 126 * DAI ops entries 127 */ 128 129 static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai, 130 unsigned int fmt) 131 { 132 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 133 /* at present, we support adc aux mode to interface with 134 * blackfin sport tdm mode 135 */ 136 case SND_SOC_DAIFMT_DSP_A: 137 break; 138 default: 139 return -EINVAL; 140 } 141 142 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 143 case SND_SOC_DAIFMT_IB_IF: 144 break; 145 default: 146 return -EINVAL; 147 } 148 149 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 150 /* ALCLK,ABCLK are both output, AD1836 can only be master */ 151 case SND_SOC_DAIFMT_CBM_CFM: 152 break; 153 default: 154 return -EINVAL; 155 } 156 157 return 0; 158 } 159 160 static int ad1836_hw_params(struct snd_pcm_substream *substream, 161 struct snd_pcm_hw_params *params, 162 struct snd_soc_dai *dai) 163 { 164 int word_len = 0; 165 struct snd_soc_codec *codec = dai->codec; 166 167 /* bit size */ 168 switch (params_format(params)) { 169 case SNDRV_PCM_FORMAT_S16_LE: 170 word_len = AD1836_WORD_LEN_16; 171 break; 172 case SNDRV_PCM_FORMAT_S20_3LE: 173 word_len = AD1836_WORD_LEN_20; 174 break; 175 case SNDRV_PCM_FORMAT_S24_LE: 176 case SNDRV_PCM_FORMAT_S32_LE: 177 word_len = AD1836_WORD_LEN_24; 178 break; 179 } 180 181 snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK, 182 word_len << AD1836_DAC_WORD_LEN_OFFSET); 183 184 snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK, 185 word_len << AD1836_ADC_WORD_OFFSET); 186 187 return 0; 188 } 189 190 static const struct snd_soc_dai_ops ad1836_dai_ops = { 191 .hw_params = ad1836_hw_params, 192 .set_fmt = ad1836_set_dai_fmt, 193 }; 194 195 #define AD183X_DAI(_name, num_dacs, num_adcs) \ 196 { \ 197 .name = _name "-hifi", \ 198 .playback = { \ 199 .stream_name = "Playback", \ 200 .channels_min = 2, \ 201 .channels_max = (num_dacs) * 2, \ 202 .rates = SNDRV_PCM_RATE_48000, \ 203 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 204 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 205 }, \ 206 .capture = { \ 207 .stream_name = "Capture", \ 208 .channels_min = 2, \ 209 .channels_max = (num_adcs) * 2, \ 210 .rates = SNDRV_PCM_RATE_48000, \ 211 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 212 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 213 }, \ 214 .ops = &ad1836_dai_ops, \ 215 } 216 217 static struct snd_soc_dai_driver ad183x_dais[] = { 218 [AD1835] = AD183X_DAI("ad1835", 4, 1), 219 [AD1836] = AD183X_DAI("ad1836", 3, 2), 220 [AD1838] = AD183X_DAI("ad1838", 3, 1), 221 }; 222 223 #ifdef CONFIG_PM 224 static int ad1836_suspend(struct snd_soc_codec *codec) 225 { 226 /* reset clock control mode */ 227 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, 228 AD1836_ADC_SERFMT_MASK, 0); 229 } 230 231 static int ad1836_resume(struct snd_soc_codec *codec) 232 { 233 /* restore clock control mode */ 234 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, 235 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX); 236 } 237 #else 238 #define ad1836_suspend NULL 239 #define ad1836_resume NULL 240 #endif 241 242 static int ad1836_probe(struct snd_soc_codec *codec) 243 { 244 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 245 struct snd_soc_dapm_context *dapm = &codec->dapm; 246 int num_dacs, num_adcs; 247 int ret = 0; 248 int i; 249 250 num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2; 251 num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2; 252 253 ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI); 254 if (ret < 0) { 255 dev_err(codec->dev, "failed to set cache I/O: %d\n", 256 ret); 257 return ret; 258 } 259 260 /* default setting for ad1836 */ 261 /* de-emphasis: 48kHz, power-on dac */ 262 snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300); 263 /* unmute dac channels */ 264 snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0); 265 /* high-pass filter enable, power-on adc */ 266 snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100); 267 /* unmute adc channles, adc aux mode */ 268 snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180); 269 /* volume */ 270 for (i = 1; i <= num_dacs; ++i) { 271 snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF); 272 snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF); 273 } 274 275 if (ad1836->type == AD1836) { 276 /* left/right diff:PGA/MUX */ 277 snd_soc_write(codec, 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 snd_soc_write(codec, 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 /* reset clock control mode */ 317 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, 318 AD1836_ADC_SERFMT_MASK, 0); 319 } 320 321 static struct snd_soc_codec_driver soc_codec_dev_ad1836 = { 322 .probe = ad1836_probe, 323 .remove = ad1836_remove, 324 .suspend = ad1836_suspend, 325 .resume = ad1836_resume, 326 .reg_cache_size = AD1836_NUM_REGS, 327 .reg_word_size = sizeof(u16), 328 329 .controls = ad183x_controls, 330 .num_controls = ARRAY_SIZE(ad183x_controls), 331 .dapm_widgets = ad183x_dapm_widgets, 332 .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets), 333 .dapm_routes = ad183x_dapm_routes, 334 .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes), 335 }; 336 337 static int __devinit ad1836_spi_probe(struct spi_device *spi) 338 { 339 struct ad1836_priv *ad1836; 340 int ret; 341 342 ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv), 343 GFP_KERNEL); 344 if (ad1836 == NULL) 345 return -ENOMEM; 346 347 ad1836->type = spi_get_device_id(spi)->driver_data; 348 349 spi_set_drvdata(spi, ad1836); 350 351 ret = snd_soc_register_codec(&spi->dev, 352 &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1); 353 return ret; 354 } 355 356 static int __devexit ad1836_spi_remove(struct spi_device *spi) 357 { 358 snd_soc_unregister_codec(&spi->dev); 359 return 0; 360 } 361 362 static const struct spi_device_id ad1836_ids[] = { 363 { "ad1835", AD1835 }, 364 { "ad1836", AD1836 }, 365 { "ad1837", AD1835 }, 366 { "ad1838", AD1838 }, 367 { "ad1839", AD1838 }, 368 { }, 369 }; 370 MODULE_DEVICE_TABLE(spi, ad1836_ids); 371 372 static struct spi_driver ad1836_spi_driver = { 373 .driver = { 374 .name = "ad1836", 375 .owner = THIS_MODULE, 376 }, 377 .probe = ad1836_spi_probe, 378 .remove = __devexit_p(ad1836_spi_remove), 379 .id_table = ad1836_ids, 380 }; 381 382 static int __init ad1836_init(void) 383 { 384 return spi_register_driver(&ad1836_spi_driver); 385 } 386 module_init(ad1836_init); 387 388 static void __exit ad1836_exit(void) 389 { 390 spi_unregister_driver(&ad1836_spi_driver); 391 } 392 module_exit(ad1836_exit); 393 394 MODULE_DESCRIPTION("ASoC ad1836 driver"); 395 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 396 MODULE_LICENSE("GPL"); 397