1 /* 2 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec. 3 * 4 * Author: Stephen Warren <swarren@nvidia.com> 5 * Copyright (C) 2010-2012 - NVIDIA, Inc. 6 * 7 * Based on code copyright/by: 8 * 9 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. 10 * 11 * Copyright 2007 Wolfson Microelectronics PLC. 12 * Author: Graeme Gregory 13 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * version 2 as published by the Free Software Foundation. 18 * 19 * This program is distributed in the hope that it will be useful, but 20 * WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 * General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 27 * 02110-1301 USA 28 * 29 */ 30 31 #include <asm/mach-types.h> 32 33 #include <linux/module.h> 34 #include <linux/platform_device.h> 35 #include <linux/slab.h> 36 #include <linux/gpio.h> 37 #include <linux/of_gpio.h> 38 39 #include <mach/tegra_wm8903_pdata.h> 40 41 #include <sound/core.h> 42 #include <sound/jack.h> 43 #include <sound/pcm.h> 44 #include <sound/pcm_params.h> 45 #include <sound/soc.h> 46 47 #include "../codecs/wm8903.h" 48 49 #include "tegra_asoc_utils.h" 50 51 #define DRV_NAME "tegra-snd-wm8903" 52 53 #define GPIO_SPKR_EN BIT(0) 54 #define GPIO_HP_MUTE BIT(1) 55 #define GPIO_INT_MIC_EN BIT(2) 56 #define GPIO_EXT_MIC_EN BIT(3) 57 #define GPIO_HP_DET BIT(4) 58 59 struct tegra_wm8903 { 60 struct tegra_wm8903_platform_data pdata; 61 struct tegra_asoc_utils_data util_data; 62 int gpio_requested; 63 }; 64 65 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream, 66 struct snd_pcm_hw_params *params) 67 { 68 struct snd_soc_pcm_runtime *rtd = substream->private_data; 69 struct snd_soc_dai *codec_dai = rtd->codec_dai; 70 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 71 struct snd_soc_codec *codec = rtd->codec; 72 struct snd_soc_card *card = codec->card; 73 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 74 int srate, mclk; 75 int err; 76 77 srate = params_rate(params); 78 switch (srate) { 79 case 64000: 80 case 88200: 81 case 96000: 82 mclk = 128 * srate; 83 break; 84 default: 85 mclk = 256 * srate; 86 break; 87 } 88 /* FIXME: Codec only requires >= 3MHz if OSR==0 */ 89 while (mclk < 6000000) 90 mclk *= 2; 91 92 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); 93 if (err < 0) { 94 dev_err(card->dev, "Can't configure clocks\n"); 95 return err; 96 } 97 98 err = snd_soc_dai_set_fmt(codec_dai, 99 SND_SOC_DAIFMT_I2S | 100 SND_SOC_DAIFMT_NB_NF | 101 SND_SOC_DAIFMT_CBS_CFS); 102 if (err < 0) { 103 dev_err(card->dev, "codec_dai fmt not set\n"); 104 return err; 105 } 106 107 err = snd_soc_dai_set_fmt(cpu_dai, 108 SND_SOC_DAIFMT_I2S | 109 SND_SOC_DAIFMT_NB_NF | 110 SND_SOC_DAIFMT_CBS_CFS); 111 if (err < 0) { 112 dev_err(card->dev, "cpu_dai fmt not set\n"); 113 return err; 114 } 115 116 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 117 SND_SOC_CLOCK_IN); 118 if (err < 0) { 119 dev_err(card->dev, "codec_dai clock not set\n"); 120 return err; 121 } 122 123 return 0; 124 } 125 126 static struct snd_soc_ops tegra_wm8903_ops = { 127 .hw_params = tegra_wm8903_hw_params, 128 }; 129 130 static struct snd_soc_jack tegra_wm8903_hp_jack; 131 132 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = { 133 { 134 .pin = "Headphone Jack", 135 .mask = SND_JACK_HEADPHONE, 136 }, 137 }; 138 139 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = { 140 .name = "headphone detect", 141 .report = SND_JACK_HEADPHONE, 142 .debounce_time = 150, 143 .invert = 1, 144 }; 145 146 static struct snd_soc_jack tegra_wm8903_mic_jack; 147 148 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { 149 { 150 .pin = "Mic Jack", 151 .mask = SND_JACK_MICROPHONE, 152 }, 153 }; 154 155 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w, 156 struct snd_kcontrol *k, int event) 157 { 158 struct snd_soc_dapm_context *dapm = w->dapm; 159 struct snd_soc_card *card = dapm->card; 160 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 161 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 162 163 if (!(machine->gpio_requested & GPIO_SPKR_EN)) 164 return 0; 165 166 gpio_set_value_cansleep(pdata->gpio_spkr_en, 167 SND_SOC_DAPM_EVENT_ON(event)); 168 169 return 0; 170 } 171 172 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w, 173 struct snd_kcontrol *k, int event) 174 { 175 struct snd_soc_dapm_context *dapm = w->dapm; 176 struct snd_soc_card *card = dapm->card; 177 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 178 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 179 180 if (!(machine->gpio_requested & GPIO_HP_MUTE)) 181 return 0; 182 183 gpio_set_value_cansleep(pdata->gpio_hp_mute, 184 !SND_SOC_DAPM_EVENT_ON(event)); 185 186 return 0; 187 } 188 189 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = { 190 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk), 191 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp), 192 SND_SOC_DAPM_MIC("Mic Jack", NULL), 193 }; 194 195 static const struct snd_soc_dapm_route harmony_audio_map[] = { 196 {"Headphone Jack", NULL, "HPOUTR"}, 197 {"Headphone Jack", NULL, "HPOUTL"}, 198 {"Int Spk", NULL, "ROP"}, 199 {"Int Spk", NULL, "RON"}, 200 {"Int Spk", NULL, "LOP"}, 201 {"Int Spk", NULL, "LON"}, 202 {"Mic Jack", NULL, "MICBIAS"}, 203 {"IN1L", NULL, "Mic Jack"}, 204 }; 205 206 static const struct snd_soc_dapm_route seaboard_audio_map[] = { 207 {"Headphone Jack", NULL, "HPOUTR"}, 208 {"Headphone Jack", NULL, "HPOUTL"}, 209 {"Int Spk", NULL, "ROP"}, 210 {"Int Spk", NULL, "RON"}, 211 {"Int Spk", NULL, "LOP"}, 212 {"Int Spk", NULL, "LON"}, 213 {"Mic Jack", NULL, "MICBIAS"}, 214 {"IN1R", NULL, "Mic Jack"}, 215 }; 216 217 static const struct snd_soc_dapm_route kaen_audio_map[] = { 218 {"Headphone Jack", NULL, "HPOUTR"}, 219 {"Headphone Jack", NULL, "HPOUTL"}, 220 {"Int Spk", NULL, "ROP"}, 221 {"Int Spk", NULL, "RON"}, 222 {"Int Spk", NULL, "LOP"}, 223 {"Int Spk", NULL, "LON"}, 224 {"Mic Jack", NULL, "MICBIAS"}, 225 {"IN2R", NULL, "Mic Jack"}, 226 }; 227 228 static const struct snd_soc_dapm_route aebl_audio_map[] = { 229 {"Headphone Jack", NULL, "HPOUTR"}, 230 {"Headphone Jack", NULL, "HPOUTL"}, 231 {"Int Spk", NULL, "LINEOUTR"}, 232 {"Int Spk", NULL, "LINEOUTL"}, 233 {"Mic Jack", NULL, "MICBIAS"}, 234 {"IN1R", NULL, "Mic Jack"}, 235 }; 236 237 static const struct snd_kcontrol_new tegra_wm8903_controls[] = { 238 SOC_DAPM_PIN_SWITCH("Int Spk"), 239 }; 240 241 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) 242 { 243 struct snd_soc_codec *codec = rtd->codec; 244 struct snd_soc_dapm_context *dapm = &codec->dapm; 245 struct snd_soc_card *card = codec->card; 246 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 247 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 248 struct device_node *np = card->dev->of_node; 249 int ret; 250 251 if (card->dev->platform_data) { 252 memcpy(pdata, card->dev->platform_data, sizeof(*pdata)); 253 } else if (np) { 254 /* 255 * This part must be in init() rather than probe() in order to 256 * guarantee that the WM8903 has been probed, and hence its 257 * GPIO controller registered, which is a pre-condition for 258 * of_get_named_gpio() to be able to map the phandles in the 259 * properties to the controller node. Given this, all 260 * pdata handling is in init() for consistency. 261 */ 262 pdata->gpio_spkr_en = of_get_named_gpio(np, 263 "nvidia,spkr-en-gpios", 0); 264 pdata->gpio_hp_mute = of_get_named_gpio(np, 265 "nvidia,hp-mute-gpios", 0); 266 pdata->gpio_hp_det = of_get_named_gpio(np, 267 "nvidia,hp-det-gpios", 0); 268 pdata->gpio_int_mic_en = of_get_named_gpio(np, 269 "nvidia,int-mic-en-gpios", 0); 270 pdata->gpio_ext_mic_en = of_get_named_gpio(np, 271 "nvidia,ext-mic-en-gpios", 0); 272 } else { 273 dev_err(card->dev, "No platform data supplied\n"); 274 return -EINVAL; 275 } 276 277 if (gpio_is_valid(pdata->gpio_spkr_en)) { 278 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en"); 279 if (ret) { 280 dev_err(card->dev, "cannot get spkr_en gpio\n"); 281 return ret; 282 } 283 machine->gpio_requested |= GPIO_SPKR_EN; 284 285 gpio_direction_output(pdata->gpio_spkr_en, 0); 286 } 287 288 if (gpio_is_valid(pdata->gpio_hp_mute)) { 289 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute"); 290 if (ret) { 291 dev_err(card->dev, "cannot get hp_mute gpio\n"); 292 return ret; 293 } 294 machine->gpio_requested |= GPIO_HP_MUTE; 295 296 gpio_direction_output(pdata->gpio_hp_mute, 1); 297 } 298 299 if (gpio_is_valid(pdata->gpio_int_mic_en)) { 300 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en"); 301 if (ret) { 302 dev_err(card->dev, "cannot get int_mic_en gpio\n"); 303 return ret; 304 } 305 machine->gpio_requested |= GPIO_INT_MIC_EN; 306 307 /* Disable int mic; enable signal is active-high */ 308 gpio_direction_output(pdata->gpio_int_mic_en, 0); 309 } 310 311 if (gpio_is_valid(pdata->gpio_ext_mic_en)) { 312 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en"); 313 if (ret) { 314 dev_err(card->dev, "cannot get ext_mic_en gpio\n"); 315 return ret; 316 } 317 machine->gpio_requested |= GPIO_EXT_MIC_EN; 318 319 /* Enable ext mic; enable signal is active-low */ 320 gpio_direction_output(pdata->gpio_ext_mic_en, 0); 321 } 322 323 if (gpio_is_valid(pdata->gpio_hp_det)) { 324 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det; 325 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, 326 &tegra_wm8903_hp_jack); 327 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack, 328 ARRAY_SIZE(tegra_wm8903_hp_jack_pins), 329 tegra_wm8903_hp_jack_pins); 330 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack, 331 1, 332 &tegra_wm8903_hp_jack_gpio); 333 machine->gpio_requested |= GPIO_HP_DET; 334 } 335 336 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, 337 &tegra_wm8903_mic_jack); 338 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack, 339 ARRAY_SIZE(tegra_wm8903_mic_jack_pins), 340 tegra_wm8903_mic_jack_pins); 341 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE, 342 0); 343 344 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 345 346 return 0; 347 } 348 349 static int tegra_wm8903_remove(struct snd_soc_card *card) 350 { 351 struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]); 352 struct snd_soc_dai *codec_dai = rtd->codec_dai; 353 struct snd_soc_codec *codec = codec_dai->codec; 354 355 wm8903_mic_detect(codec, NULL, 0, 0); 356 357 return 0; 358 } 359 360 static struct snd_soc_dai_link tegra_wm8903_dai = { 361 .name = "WM8903", 362 .stream_name = "WM8903 PCM", 363 .codec_name = "wm8903.0-001a", 364 .platform_name = "tegra20-i2s.0", 365 .cpu_dai_name = "tegra20-i2s.0", 366 .codec_dai_name = "wm8903-hifi", 367 .init = tegra_wm8903_init, 368 .ops = &tegra_wm8903_ops, 369 }; 370 371 static struct snd_soc_card snd_soc_tegra_wm8903 = { 372 .name = "tegra-wm8903", 373 .owner = THIS_MODULE, 374 .dai_link = &tegra_wm8903_dai, 375 .num_links = 1, 376 377 .remove = tegra_wm8903_remove, 378 379 .controls = tegra_wm8903_controls, 380 .num_controls = ARRAY_SIZE(tegra_wm8903_controls), 381 .dapm_widgets = tegra_wm8903_dapm_widgets, 382 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets), 383 .fully_routed = true, 384 }; 385 386 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev) 387 { 388 struct snd_soc_card *card = &snd_soc_tegra_wm8903; 389 struct tegra_wm8903 *machine; 390 int ret; 391 392 if (!pdev->dev.platform_data && !pdev->dev.of_node) { 393 dev_err(&pdev->dev, "No platform data supplied\n"); 394 return -EINVAL; 395 } 396 397 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903), 398 GFP_KERNEL); 399 if (!machine) { 400 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n"); 401 ret = -ENOMEM; 402 goto err; 403 } 404 405 card->dev = &pdev->dev; 406 platform_set_drvdata(pdev, card); 407 snd_soc_card_set_drvdata(card, machine); 408 409 if (pdev->dev.of_node) { 410 ret = snd_soc_of_parse_card_name(card, "nvidia,model"); 411 if (ret) 412 goto err; 413 414 ret = snd_soc_of_parse_audio_routing(card, 415 "nvidia,audio-routing"); 416 if (ret) 417 goto err; 418 419 tegra_wm8903_dai.codec_name = NULL; 420 tegra_wm8903_dai.codec_of_node = of_parse_phandle( 421 pdev->dev.of_node, "nvidia,audio-codec", 0); 422 if (!tegra_wm8903_dai.codec_of_node) { 423 dev_err(&pdev->dev, 424 "Property 'nvidia,audio-codec' missing or invalid\n"); 425 ret = -EINVAL; 426 goto err; 427 } 428 429 tegra_wm8903_dai.cpu_dai_name = NULL; 430 tegra_wm8903_dai.cpu_dai_of_node = of_parse_phandle( 431 pdev->dev.of_node, "nvidia,i2s-controller", 0); 432 if (!tegra_wm8903_dai.cpu_dai_of_node) { 433 dev_err(&pdev->dev, 434 "Property 'nvidia,i2s-controller' missing or invalid\n"); 435 ret = -EINVAL; 436 goto err; 437 } 438 439 tegra_wm8903_dai.platform_name = NULL; 440 tegra_wm8903_dai.platform_of_node = 441 tegra_wm8903_dai.cpu_dai_of_node; 442 } else { 443 if (machine_is_harmony()) { 444 card->dapm_routes = harmony_audio_map; 445 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map); 446 } else if (machine_is_seaboard()) { 447 card->dapm_routes = seaboard_audio_map; 448 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map); 449 } else if (machine_is_kaen()) { 450 card->dapm_routes = kaen_audio_map; 451 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map); 452 } else { 453 card->dapm_routes = aebl_audio_map; 454 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map); 455 } 456 } 457 458 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); 459 if (ret) 460 goto err; 461 462 ret = snd_soc_register_card(card); 463 if (ret) { 464 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 465 ret); 466 goto err_fini_utils; 467 } 468 469 return 0; 470 471 err_fini_utils: 472 tegra_asoc_utils_fini(&machine->util_data); 473 err: 474 return ret; 475 } 476 477 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev) 478 { 479 struct snd_soc_card *card = platform_get_drvdata(pdev); 480 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 481 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 482 483 if (machine->gpio_requested & GPIO_HP_DET) 484 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 485 1, 486 &tegra_wm8903_hp_jack_gpio); 487 if (machine->gpio_requested & GPIO_EXT_MIC_EN) 488 gpio_free(pdata->gpio_ext_mic_en); 489 if (machine->gpio_requested & GPIO_INT_MIC_EN) 490 gpio_free(pdata->gpio_int_mic_en); 491 if (machine->gpio_requested & GPIO_HP_MUTE) 492 gpio_free(pdata->gpio_hp_mute); 493 if (machine->gpio_requested & GPIO_SPKR_EN) 494 gpio_free(pdata->gpio_spkr_en); 495 machine->gpio_requested = 0; 496 497 snd_soc_unregister_card(card); 498 499 tegra_asoc_utils_fini(&machine->util_data); 500 501 return 0; 502 } 503 504 static const struct of_device_id tegra_wm8903_of_match[] __devinitconst = { 505 { .compatible = "nvidia,tegra-audio-wm8903", }, 506 {}, 507 }; 508 509 static struct platform_driver tegra_wm8903_driver = { 510 .driver = { 511 .name = DRV_NAME, 512 .owner = THIS_MODULE, 513 .pm = &snd_soc_pm_ops, 514 .of_match_table = tegra_wm8903_of_match, 515 }, 516 .probe = tegra_wm8903_driver_probe, 517 .remove = __devexit_p(tegra_wm8903_driver_remove), 518 }; 519 module_platform_driver(tegra_wm8903_driver); 520 521 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); 522 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); 523 MODULE_LICENSE("GPL"); 524 MODULE_ALIAS("platform:" DRV_NAME); 525 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); 526