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 27struct snd_soc_card_drvdata_davinci { 28 struct clk *mclk; 29 unsigned sysclk; 30}; 31 32static 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 45static 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 56static 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 80static 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 */ 87static 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 */ 95static 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 */ 117static 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 */ 146static 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 159static 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 172static struct snd_soc_dai_link dm365_evm_dai = { 173#ifdef CONFIG_SND_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_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 194static 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 219static 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 232static 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 */ 251static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = { 252 .sysclk = 12288000, 253}; 254 255static 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 */ 265static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = { 266 .sysclk = 27000000, 267}; 268 269static 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 */ 278static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = { 279 .sysclk = 27000000, 280}; 281 282static 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 */ 291static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = { 292 .sysclk = 27000000, 293}; 294 295static 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 303static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = { 304 .sysclk = 24576000, 305}; 306 307static 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 315static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = { 316 .sysclk = 24576000, 317}; 318 319static 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 */ 333static 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 343static 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}; 350MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids); 351 352/* davinci evm audio machine driver */ 353static struct snd_soc_card evm_soc_card = { 354 .owner = THIS_MODULE, 355 .num_links = 1, 356}; 357 358static 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 of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); 363 struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data; 364 struct snd_soc_card_drvdata_davinci *drvdata = NULL; 365 struct clk *mclk; 366 int ret = 0; 367 368 evm_soc_card.dai_link = dai; 369 370 dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0); 371 if (!dai->codec_of_node) 372 return -EINVAL; 373 374 dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0); 375 if (!dai->cpu_of_node) 376 return -EINVAL; 377 378 dai->platform_of_node = dai->cpu_of_node; 379 380 evm_soc_card.dev = &pdev->dev; 381 ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model"); 382 if (ret) 383 return ret; 384 385 mclk = devm_clk_get(&pdev->dev, "mclk"); 386 if (PTR_ERR(mclk) == -EPROBE_DEFER) { 387 return -EPROBE_DEFER; 388 } else if (IS_ERR(mclk)) { 389 dev_dbg(&pdev->dev, "mclk not found.\n"); 390 mclk = NULL; 391 } 392 393 drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); 394 if (!drvdata) 395 return -ENOMEM; 396 397 drvdata->mclk = mclk; 398 399 ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk); 400 401 if (ret < 0) { 402 if (!drvdata->mclk) { 403 dev_err(&pdev->dev, 404 "No clock or clock rate defined.\n"); 405 return -EINVAL; 406 } 407 drvdata->sysclk = clk_get_rate(drvdata->mclk); 408 } else if (drvdata->mclk) { 409 unsigned int requestd_rate = drvdata->sysclk; 410 clk_set_rate(drvdata->mclk, drvdata->sysclk); 411 drvdata->sysclk = clk_get_rate(drvdata->mclk); 412 if (drvdata->sysclk != requestd_rate) 413 dev_warn(&pdev->dev, 414 "Could not get requested rate %u using %u.\n", 415 requestd_rate, drvdata->sysclk); 416 } 417 418 snd_soc_card_set_drvdata(&evm_soc_card, drvdata); 419 ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card); 420 421 if (ret) 422 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); 423 424 return ret; 425} 426 427static struct platform_driver davinci_evm_driver = { 428 .probe = davinci_evm_probe, 429 .driver = { 430 .name = "davinci_evm", 431 .pm = &snd_soc_pm_ops, 432 .of_match_table = of_match_ptr(davinci_evm_dt_ids), 433 }, 434}; 435#endif 436 437static struct platform_device *evm_snd_device; 438 439static int __init evm_init(void) 440{ 441 struct snd_soc_card *evm_snd_dev_data; 442 int index; 443 int ret; 444 445 /* 446 * If dtb is there, the devices will be created dynamically. 447 * Only register platfrom driver structure. 448 */ 449#if defined(CONFIG_OF) 450 if (of_have_populated_dt()) 451 return platform_driver_register(&davinci_evm_driver); 452#endif 453 454 if (machine_is_davinci_evm()) { 455 evm_snd_dev_data = &dm6446_snd_soc_card_evm; 456 index = 0; 457 } else if (machine_is_davinci_dm355_evm()) { 458 evm_snd_dev_data = &dm355_snd_soc_card_evm; 459 index = 1; 460 } else if (machine_is_davinci_dm365_evm()) { 461 evm_snd_dev_data = &dm365_snd_soc_card_evm; 462 index = 0; 463 } else if (machine_is_davinci_dm6467_evm()) { 464 evm_snd_dev_data = &dm6467_snd_soc_card_evm; 465 index = 0; 466 } else if (machine_is_davinci_da830_evm()) { 467 evm_snd_dev_data = &da830_snd_soc_card; 468 index = 1; 469 } else if (machine_is_davinci_da850_evm()) { 470 evm_snd_dev_data = &da850_snd_soc_card; 471 index = 0; 472 } else 473 return -EINVAL; 474 475 evm_snd_device = platform_device_alloc("soc-audio", index); 476 if (!evm_snd_device) 477 return -ENOMEM; 478 479 platform_set_drvdata(evm_snd_device, evm_snd_dev_data); 480 ret = platform_device_add(evm_snd_device); 481 if (ret) 482 platform_device_put(evm_snd_device); 483 484 return ret; 485} 486 487static void __exit evm_exit(void) 488{ 489#if defined(CONFIG_OF) 490 if (of_have_populated_dt()) { 491 platform_driver_unregister(&davinci_evm_driver); 492 return; 493 } 494#endif 495 496 platform_device_unregister(evm_snd_device); 497} 498 499module_init(evm_init); 500module_exit(evm_exit); 501 502MODULE_AUTHOR("Vladimir Barinov"); 503MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver"); 504MODULE_LICENSE("GPL"); 505