1 /* 2 * ASoC driver for TI DAVINCI EVM platform 3 * 4 * Author: Vladimir Barinov, <vbarinov@embeddedalley.com> 5 * Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/timer.h> 15 #include <linux/interrupt.h> 16 #include <linux/platform_device.h> 17 #include <linux/i2c.h> 18 #include <linux/of_platform.h> 19 #include <linux/clk.h> 20 #include <sound/core.h> 21 #include <sound/pcm.h> 22 #include <sound/soc.h> 23 24 #include <asm/dma.h> 25 #include <asm/mach-types.h> 26 27 struct snd_soc_card_drvdata_davinci { 28 struct clk *mclk; 29 unsigned sysclk; 30 }; 31 32 static int evm_startup(struct snd_pcm_substream *substream) 33 { 34 struct snd_soc_pcm_runtime *rtd = substream->private_data; 35 struct snd_soc_card *soc_card = rtd->card; 36 struct snd_soc_card_drvdata_davinci *drvdata = 37 snd_soc_card_get_drvdata(soc_card); 38 39 if (drvdata->mclk) 40 return clk_prepare_enable(drvdata->mclk); 41 42 return 0; 43 } 44 45 static void evm_shutdown(struct snd_pcm_substream *substream) 46 { 47 struct snd_soc_pcm_runtime *rtd = substream->private_data; 48 struct snd_soc_card *soc_card = rtd->card; 49 struct snd_soc_card_drvdata_davinci *drvdata = 50 snd_soc_card_get_drvdata(soc_card); 51 52 if (drvdata->mclk) 53 clk_disable_unprepare(drvdata->mclk); 54 } 55 56 static int evm_hw_params(struct snd_pcm_substream *substream, 57 struct snd_pcm_hw_params *params) 58 { 59 struct snd_soc_pcm_runtime *rtd = substream->private_data; 60 struct snd_soc_dai *codec_dai = rtd->codec_dai; 61 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 62 struct snd_soc_card *soc_card = rtd->card; 63 int ret = 0; 64 unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *) 65 snd_soc_card_get_drvdata(soc_card))->sysclk; 66 67 /* set the codec system clock */ 68 ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT); 69 if (ret < 0) 70 return ret; 71 72 /* set the CPU system clock */ 73 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT); 74 if (ret < 0) 75 return ret; 76 77 return 0; 78 } 79 80 static struct snd_soc_ops evm_ops = { 81 .startup = evm_startup, 82 .shutdown = evm_shutdown, 83 .hw_params = evm_hw_params, 84 }; 85 86 /* davinci-evm machine dapm widgets */ 87 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = { 88 SND_SOC_DAPM_HP("Headphone Jack", NULL), 89 SND_SOC_DAPM_LINE("Line Out", NULL), 90 SND_SOC_DAPM_MIC("Mic Jack", NULL), 91 SND_SOC_DAPM_LINE("Line In", NULL), 92 }; 93 94 /* davinci-evm machine audio_mapnections to the codec pins */ 95 static const struct snd_soc_dapm_route audio_map[] = { 96 /* Headphone connected to HPLOUT, HPROUT */ 97 {"Headphone Jack", NULL, "HPLOUT"}, 98 {"Headphone Jack", NULL, "HPROUT"}, 99 100 /* Line Out connected to LLOUT, RLOUT */ 101 {"Line Out", NULL, "LLOUT"}, 102 {"Line Out", NULL, "RLOUT"}, 103 104 /* Mic connected to (MIC3L | MIC3R) */ 105 {"MIC3L", NULL, "Mic Bias"}, 106 {"MIC3R", NULL, "Mic Bias"}, 107 {"Mic Bias", NULL, "Mic Jack"}, 108 109 /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */ 110 {"LINE1L", NULL, "Line In"}, 111 {"LINE2L", NULL, "Line In"}, 112 {"LINE1R", NULL, "Line In"}, 113 {"LINE2R", NULL, "Line In"}, 114 }; 115 116 /* Logic for a aic3x as connected on a davinci-evm */ 117 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd) 118 { 119 struct snd_soc_card *card = rtd->card; 120 struct device_node *np = card->dev->of_node; 121 int ret; 122 123 /* Add davinci-evm specific widgets */ 124 snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets, 125 ARRAY_SIZE(aic3x_dapm_widgets)); 126 127 if (np) { 128 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing"); 129 if (ret) 130 return ret; 131 } else { 132 /* Set up davinci-evm specific audio path audio_map */ 133 snd_soc_dapm_add_routes(&card->dapm, audio_map, 134 ARRAY_SIZE(audio_map)); 135 } 136 137 /* not connected */ 138 snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT"); 139 snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM"); 140 snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM"); 141 142 return 0; 143 } 144 145 /* davinci-evm digital audio interface glue - connects codec <--> CPU */ 146 static struct snd_soc_dai_link dm6446_evm_dai = { 147 .name = "TLV320AIC3X", 148 .stream_name = "AIC3X", 149 .cpu_dai_name = "davinci-mcbsp", 150 .codec_dai_name = "tlv320aic3x-hifi", 151 .codec_name = "tlv320aic3x-codec.1-001b", 152 .platform_name = "davinci-mcbsp", 153 .init = evm_aic3x_init, 154 .ops = &evm_ops, 155 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 156 SND_SOC_DAIFMT_IB_NF, 157 }; 158 159 static struct snd_soc_dai_link dm355_evm_dai = { 160 .name = "TLV320AIC3X", 161 .stream_name = "AIC3X", 162 .cpu_dai_name = "davinci-mcbsp.1", 163 .codec_dai_name = "tlv320aic3x-hifi", 164 .codec_name = "tlv320aic3x-codec.1-001b", 165 .platform_name = "davinci-mcbsp.1", 166 .init = evm_aic3x_init, 167 .ops = &evm_ops, 168 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 169 SND_SOC_DAIFMT_IB_NF, 170 }; 171 172 static struct snd_soc_dai_link dm365_evm_dai = { 173 #ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC 174 .name = "TLV320AIC3X", 175 .stream_name = "AIC3X", 176 .cpu_dai_name = "davinci-mcbsp", 177 .codec_dai_name = "tlv320aic3x-hifi", 178 .codec_name = "tlv320aic3x-codec.1-0018", 179 .platform_name = "davinci-mcbsp", 180 .init = evm_aic3x_init, 181 .ops = &evm_ops, 182 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 183 SND_SOC_DAIFMT_IB_NF, 184 #elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC) 185 .name = "Voice Codec - CQ93VC", 186 .stream_name = "CQ93", 187 .cpu_dai_name = "davinci-vcif", 188 .codec_dai_name = "cq93vc-hifi", 189 .codec_name = "cq93vc-codec", 190 .platform_name = "davinci-vcif", 191 #endif 192 }; 193 194 static struct snd_soc_dai_link dm6467_evm_dai[] = { 195 { 196 .name = "TLV320AIC3X", 197 .stream_name = "AIC3X", 198 .cpu_dai_name= "davinci-mcasp.0", 199 .codec_dai_name = "tlv320aic3x-hifi", 200 .platform_name = "davinci-mcasp.0", 201 .codec_name = "tlv320aic3x-codec.0-001a", 202 .init = evm_aic3x_init, 203 .ops = &evm_ops, 204 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 205 SND_SOC_DAIFMT_IB_NF, 206 }, 207 { 208 .name = "McASP", 209 .stream_name = "spdif", 210 .cpu_dai_name= "davinci-mcasp.1", 211 .codec_dai_name = "dit-hifi", 212 .codec_name = "spdif_dit", 213 .platform_name = "davinci-mcasp.1", 214 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 215 SND_SOC_DAIFMT_IB_NF, 216 }, 217 }; 218 219 static struct snd_soc_dai_link da830_evm_dai = { 220 .name = "TLV320AIC3X", 221 .stream_name = "AIC3X", 222 .cpu_dai_name = "davinci-mcasp.1", 223 .codec_dai_name = "tlv320aic3x-hifi", 224 .codec_name = "tlv320aic3x-codec.1-0018", 225 .platform_name = "davinci-mcasp.1", 226 .init = evm_aic3x_init, 227 .ops = &evm_ops, 228 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 229 SND_SOC_DAIFMT_IB_NF, 230 }; 231 232 static struct snd_soc_dai_link da850_evm_dai = { 233 .name = "TLV320AIC3X", 234 .stream_name = "AIC3X", 235 .cpu_dai_name= "davinci-mcasp.0", 236 .codec_dai_name = "tlv320aic3x-hifi", 237 .codec_name = "tlv320aic3x-codec.1-0018", 238 .platform_name = "davinci-mcasp.0", 239 .init = evm_aic3x_init, 240 .ops = &evm_ops, 241 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 242 SND_SOC_DAIFMT_IB_NF, 243 }; 244 245 /* davinci dm6446 evm audio machine driver */ 246 /* 247 * ASP0 in DM6446 EVM is clocked by U55, as configured by 248 * board-dm644x-evm.c using GPIOs from U18. There are six 249 * options; here we "know" we use a 48 KHz sample rate. 250 */ 251 static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = { 252 .sysclk = 12288000, 253 }; 254 255 static struct snd_soc_card dm6446_snd_soc_card_evm = { 256 .name = "DaVinci DM6446 EVM", 257 .owner = THIS_MODULE, 258 .dai_link = &dm6446_evm_dai, 259 .num_links = 1, 260 .drvdata = &dm6446_snd_soc_card_drvdata, 261 }; 262 263 /* davinci dm355 evm audio machine driver */ 264 /* ASP1 on DM355 EVM is clocked by an external oscillator */ 265 static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = { 266 .sysclk = 27000000, 267 }; 268 269 static struct snd_soc_card dm355_snd_soc_card_evm = { 270 .name = "DaVinci DM355 EVM", 271 .owner = THIS_MODULE, 272 .dai_link = &dm355_evm_dai, 273 .num_links = 1, 274 .drvdata = &dm355_snd_soc_card_drvdata, 275 }; 276 277 /* davinci dm365 evm audio machine driver */ 278 static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = { 279 .sysclk = 27000000, 280 }; 281 282 static struct snd_soc_card dm365_snd_soc_card_evm = { 283 .name = "DaVinci DM365 EVM", 284 .owner = THIS_MODULE, 285 .dai_link = &dm365_evm_dai, 286 .num_links = 1, 287 .drvdata = &dm365_snd_soc_card_drvdata, 288 }; 289 290 /* davinci dm6467 evm audio machine driver */ 291 static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = { 292 .sysclk = 27000000, 293 }; 294 295 static struct snd_soc_card dm6467_snd_soc_card_evm = { 296 .name = "DaVinci DM6467 EVM", 297 .owner = THIS_MODULE, 298 .dai_link = dm6467_evm_dai, 299 .num_links = ARRAY_SIZE(dm6467_evm_dai), 300 .drvdata = &dm6467_snd_soc_card_drvdata, 301 }; 302 303 static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = { 304 .sysclk = 24576000, 305 }; 306 307 static struct snd_soc_card da830_snd_soc_card = { 308 .name = "DA830/OMAP-L137 EVM", 309 .owner = THIS_MODULE, 310 .dai_link = &da830_evm_dai, 311 .num_links = 1, 312 .drvdata = &da830_snd_soc_card_drvdata, 313 }; 314 315 static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = { 316 .sysclk = 24576000, 317 }; 318 319 static struct snd_soc_card da850_snd_soc_card = { 320 .name = "DA850/OMAP-L138 EVM", 321 .owner = THIS_MODULE, 322 .dai_link = &da850_evm_dai, 323 .num_links = 1, 324 .drvdata = &da850_snd_soc_card_drvdata, 325 }; 326 327 #if defined(CONFIG_OF) 328 329 /* 330 * The struct is used as place holder. It will be completely 331 * filled with data from dt node. 332 */ 333 static struct snd_soc_dai_link evm_dai_tlv320aic3x = { 334 .name = "TLV320AIC3X", 335 .stream_name = "AIC3X", 336 .codec_dai_name = "tlv320aic3x-hifi", 337 .ops = &evm_ops, 338 .init = evm_aic3x_init, 339 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM | 340 SND_SOC_DAIFMT_IB_NF, 341 }; 342 343 static const struct of_device_id davinci_evm_dt_ids[] = { 344 { 345 .compatible = "ti,da830-evm-audio", 346 .data = (void *) &evm_dai_tlv320aic3x, 347 }, 348 { /* sentinel */ } 349 }; 350 MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids); 351 352 /* davinci evm audio machine driver */ 353 static struct snd_soc_card evm_soc_card = { 354 .owner = THIS_MODULE, 355 .num_links = 1, 356 }; 357 358 static int davinci_evm_probe(struct platform_device *pdev) 359 { 360 struct device_node *np = pdev->dev.of_node; 361 const struct of_device_id *match; 362 struct snd_soc_dai_link *dai; 363 struct snd_soc_card_drvdata_davinci *drvdata = NULL; 364 struct clk *mclk; 365 int ret = 0; 366 367 match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); 368 if (!match) { 369 dev_err(&pdev->dev, "Error: No device match found\n"); 370 return -ENODEV; 371 } 372 373 dai = (struct snd_soc_dai_link *) match->data; 374 375 evm_soc_card.dai_link = dai; 376 377 dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0); 378 if (!dai->codec_of_node) 379 return -EINVAL; 380 381 dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0); 382 if (!dai->cpu_of_node) 383 return -EINVAL; 384 385 dai->platform_of_node = dai->cpu_of_node; 386 387 evm_soc_card.dev = &pdev->dev; 388 ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model"); 389 if (ret) 390 return ret; 391 392 mclk = devm_clk_get(&pdev->dev, "mclk"); 393 if (PTR_ERR(mclk) == -EPROBE_DEFER) { 394 return -EPROBE_DEFER; 395 } else if (IS_ERR(mclk)) { 396 dev_dbg(&pdev->dev, "mclk not found.\n"); 397 mclk = NULL; 398 } 399 400 drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); 401 if (!drvdata) 402 return -ENOMEM; 403 404 drvdata->mclk = mclk; 405 406 ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk); 407 408 if (ret < 0) { 409 if (!drvdata->mclk) { 410 dev_err(&pdev->dev, 411 "No clock or clock rate defined.\n"); 412 return -EINVAL; 413 } 414 drvdata->sysclk = clk_get_rate(drvdata->mclk); 415 } else if (drvdata->mclk) { 416 unsigned int requestd_rate = drvdata->sysclk; 417 clk_set_rate(drvdata->mclk, drvdata->sysclk); 418 drvdata->sysclk = clk_get_rate(drvdata->mclk); 419 if (drvdata->sysclk != requestd_rate) 420 dev_warn(&pdev->dev, 421 "Could not get requested rate %u using %u.\n", 422 requestd_rate, drvdata->sysclk); 423 } 424 425 snd_soc_card_set_drvdata(&evm_soc_card, drvdata); 426 ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card); 427 428 if (ret) 429 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 430 431 return ret; 432 } 433 434 static struct platform_driver davinci_evm_driver = { 435 .probe = davinci_evm_probe, 436 .driver = { 437 .name = "davinci_evm", 438 .pm = &snd_soc_pm_ops, 439 .of_match_table = of_match_ptr(davinci_evm_dt_ids), 440 }, 441 }; 442 #endif 443 444 static struct platform_device *evm_snd_device; 445 446 static int __init evm_init(void) 447 { 448 struct snd_soc_card *evm_snd_dev_data; 449 int index; 450 int ret; 451 452 /* 453 * If dtb is there, the devices will be created dynamically. 454 * Only register platfrom driver structure. 455 */ 456 #if defined(CONFIG_OF) 457 if (of_have_populated_dt()) 458 return platform_driver_register(&davinci_evm_driver); 459 #endif 460 461 if (machine_is_davinci_evm()) { 462 evm_snd_dev_data = &dm6446_snd_soc_card_evm; 463 index = 0; 464 } else if (machine_is_davinci_dm355_evm()) { 465 evm_snd_dev_data = &dm355_snd_soc_card_evm; 466 index = 1; 467 } else if (machine_is_davinci_dm365_evm()) { 468 evm_snd_dev_data = &dm365_snd_soc_card_evm; 469 index = 0; 470 } else if (machine_is_davinci_dm6467_evm()) { 471 evm_snd_dev_data = &dm6467_snd_soc_card_evm; 472 index = 0; 473 } else if (machine_is_davinci_da830_evm()) { 474 evm_snd_dev_data = &da830_snd_soc_card; 475 index = 1; 476 } else if (machine_is_davinci_da850_evm()) { 477 evm_snd_dev_data = &da850_snd_soc_card; 478 index = 0; 479 } else 480 return -EINVAL; 481 482 evm_snd_device = platform_device_alloc("soc-audio", index); 483 if (!evm_snd_device) 484 return -ENOMEM; 485 486 platform_set_drvdata(evm_snd_device, evm_snd_dev_data); 487 ret = platform_device_add(evm_snd_device); 488 if (ret) 489 platform_device_put(evm_snd_device); 490 491 return ret; 492 } 493 494 static void __exit evm_exit(void) 495 { 496 #if defined(CONFIG_OF) 497 if (of_have_populated_dt()) { 498 platform_driver_unregister(&davinci_evm_driver); 499 return; 500 } 501 #endif 502 503 platform_device_unregister(evm_snd_device); 504 } 505 506 module_init(evm_init); 507 module_exit(evm_exit); 508 509 MODULE_AUTHOR("Vladimir Barinov"); 510 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver"); 511 MODULE_LICENSE("GPL"); 512