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; 165 166 struct snd_soc_pcm_runtime *rtd = substream->private_data; 167 struct snd_soc_codec *codec = rtd->codec; 168 169 /* bit size */ 170 switch (params_format(params)) { 171 case SNDRV_PCM_FORMAT_S16_LE: 172 word_len = AD1836_WORD_LEN_16; 173 break; 174 case SNDRV_PCM_FORMAT_S20_3LE: 175 word_len = AD1836_WORD_LEN_20; 176 break; 177 case SNDRV_PCM_FORMAT_S24_LE: 178 case SNDRV_PCM_FORMAT_S32_LE: 179 word_len = AD1836_WORD_LEN_24; 180 break; 181 } 182 183 snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK, 184 word_len << AD1836_DAC_WORD_LEN_OFFSET); 185 186 snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK, 187 word_len << AD1836_ADC_WORD_OFFSET); 188 189 return 0; 190 } 191 192 static const struct snd_soc_dai_ops ad1836_dai_ops = { 193 .hw_params = ad1836_hw_params, 194 .set_fmt = ad1836_set_dai_fmt, 195 }; 196 197 #define AD183X_DAI(_name, num_dacs, num_adcs) \ 198 { \ 199 .name = _name "-hifi", \ 200 .playback = { \ 201 .stream_name = "Playback", \ 202 .channels_min = 2, \ 203 .channels_max = (num_dacs) * 2, \ 204 .rates = SNDRV_PCM_RATE_48000, \ 205 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 206 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 207 }, \ 208 .capture = { \ 209 .stream_name = "Capture", \ 210 .channels_min = 2, \ 211 .channels_max = (num_adcs) * 2, \ 212 .rates = SNDRV_PCM_RATE_48000, \ 213 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ 214 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ 215 }, \ 216 .ops = &ad1836_dai_ops, \ 217 } 218 219 static struct snd_soc_dai_driver ad183x_dais[] = { 220 [AD1835] = AD183X_DAI("ad1835", 4, 1), 221 [AD1836] = AD183X_DAI("ad1836", 3, 2), 222 [AD1838] = AD183X_DAI("ad1838", 3, 1), 223 }; 224 225 #ifdef CONFIG_PM 226 static int ad1836_suspend(struct snd_soc_codec *codec) 227 { 228 /* reset clock control mode */ 229 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, 230 AD1836_ADC_SERFMT_MASK, 0); 231 } 232 233 static int ad1836_resume(struct snd_soc_codec *codec) 234 { 235 /* restore clock control mode */ 236 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, 237 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX); 238 } 239 #else 240 #define ad1836_suspend NULL 241 #define ad1836_resume NULL 242 #endif 243 244 static int ad1836_probe(struct snd_soc_codec *codec) 245 { 246 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); 247 struct snd_soc_dapm_context *dapm = &codec->dapm; 248 int num_dacs, num_adcs; 249 int ret = 0; 250 int i; 251 252 num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2; 253 num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2; 254 255 ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI); 256 if (ret < 0) { 257 dev_err(codec->dev, "failed to set cache I/O: %d\n", 258 ret); 259 return ret; 260 } 261 262 /* default setting for ad1836 */ 263 /* de-emphasis: 48kHz, power-on dac */ 264 snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300); 265 /* unmute dac channels */ 266 snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0); 267 /* high-pass filter enable, power-on adc */ 268 snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100); 269 /* unmute adc channles, adc aux mode */ 270 snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180); 271 /* volume */ 272 for (i = 1; i <= num_dacs; ++i) { 273 snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF); 274 snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF); 275 } 276 277 if (ad1836->type == AD1836) { 278 /* left/right diff:PGA/MUX */ 279 snd_soc_write(codec, 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 snd_soc_write(codec, 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 /* reset clock control mode */ 319 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, 320 AD1836_ADC_SERFMT_MASK, 0); 321 } 322 323 static struct snd_soc_codec_driver soc_codec_dev_ad1836 = { 324 .probe = ad1836_probe, 325 .remove = ad1836_remove, 326 .suspend = ad1836_suspend, 327 .resume = ad1836_resume, 328 .reg_cache_size = AD1836_NUM_REGS, 329 .reg_word_size = sizeof(u16), 330 331 .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 static int __devinit ad1836_spi_probe(struct spi_device *spi) 340 { 341 struct ad1836_priv *ad1836; 342 int ret; 343 344 ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv), 345 GFP_KERNEL); 346 if (ad1836 == NULL) 347 return -ENOMEM; 348 349 ad1836->type = spi_get_device_id(spi)->driver_data; 350 351 spi_set_drvdata(spi, ad1836); 352 353 ret = snd_soc_register_codec(&spi->dev, 354 &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1); 355 return ret; 356 } 357 358 static int __devexit ad1836_spi_remove(struct spi_device *spi) 359 { 360 snd_soc_unregister_codec(&spi->dev); 361 return 0; 362 } 363 364 static const struct spi_device_id ad1836_ids[] = { 365 { "ad1835", AD1835 }, 366 { "ad1836", AD1836 }, 367 { "ad1837", AD1835 }, 368 { "ad1838", AD1838 }, 369 { "ad1839", AD1838 }, 370 { }, 371 }; 372 MODULE_DEVICE_TABLE(spi, ad1836_ids); 373 374 static struct spi_driver ad1836_spi_driver = { 375 .driver = { 376 .name = "ad1836", 377 .owner = THIS_MODULE, 378 }, 379 .probe = ad1836_spi_probe, 380 .remove = __devexit_p(ad1836_spi_remove), 381 .id_table = ad1836_ids, 382 }; 383 384 static int __init ad1836_init(void) 385 { 386 return spi_register_driver(&ad1836_spi_driver); 387 } 388 module_init(ad1836_init); 389 390 static void __exit ad1836_exit(void) 391 { 392 spi_unregister_driver(&ad1836_spi_driver); 393 } 394 module_exit(ad1836_exit); 395 396 MODULE_DESCRIPTION("ASoC ad1836 driver"); 397 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 398 MODULE_LICENSE("GPL"); 399