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) 2010-2011 - 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_das.h" 50 #include "tegra_i2s.h" 51 #include "tegra_pcm.h" 52 #include "tegra_asoc_utils.h" 53 54 #define DRV_NAME "tegra-snd-wm8903" 55 56 #define GPIO_SPKR_EN BIT(0) 57 #define GPIO_HP_MUTE BIT(1) 58 #define GPIO_INT_MIC_EN BIT(2) 59 #define GPIO_EXT_MIC_EN BIT(3) 60 #define GPIO_HP_DET BIT(4) 61 62 struct tegra_wm8903 { 63 struct tegra_wm8903_platform_data pdata; 64 struct platform_device *pcm_dev; 65 struct tegra_asoc_utils_data util_data; 66 int gpio_requested; 67 }; 68 69 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream, 70 struct snd_pcm_hw_params *params) 71 { 72 struct snd_soc_pcm_runtime *rtd = substream->private_data; 73 struct snd_soc_dai *codec_dai = rtd->codec_dai; 74 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 75 struct snd_soc_codec *codec = rtd->codec; 76 struct snd_soc_card *card = codec->card; 77 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 78 int srate, mclk; 79 int err; 80 81 srate = params_rate(params); 82 switch (srate) { 83 case 64000: 84 case 88200: 85 case 96000: 86 mclk = 128 * srate; 87 break; 88 default: 89 mclk = 256 * srate; 90 break; 91 } 92 /* FIXME: Codec only requires >= 3MHz if OSR==0 */ 93 while (mclk < 6000000) 94 mclk *= 2; 95 96 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); 97 if (err < 0) { 98 dev_err(card->dev, "Can't configure clocks\n"); 99 return err; 100 } 101 102 err = snd_soc_dai_set_fmt(codec_dai, 103 SND_SOC_DAIFMT_I2S | 104 SND_SOC_DAIFMT_NB_NF | 105 SND_SOC_DAIFMT_CBS_CFS); 106 if (err < 0) { 107 dev_err(card->dev, "codec_dai fmt not set\n"); 108 return err; 109 } 110 111 err = snd_soc_dai_set_fmt(cpu_dai, 112 SND_SOC_DAIFMT_I2S | 113 SND_SOC_DAIFMT_NB_NF | 114 SND_SOC_DAIFMT_CBS_CFS); 115 if (err < 0) { 116 dev_err(card->dev, "cpu_dai fmt not set\n"); 117 return err; 118 } 119 120 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 121 SND_SOC_CLOCK_IN); 122 if (err < 0) { 123 dev_err(card->dev, "codec_dai clock not set\n"); 124 return err; 125 } 126 127 return 0; 128 } 129 130 static struct snd_soc_ops tegra_wm8903_ops = { 131 .hw_params = tegra_wm8903_hw_params, 132 }; 133 134 static struct snd_soc_jack tegra_wm8903_hp_jack; 135 136 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = { 137 { 138 .pin = "Headphone Jack", 139 .mask = SND_JACK_HEADPHONE, 140 }, 141 }; 142 143 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = { 144 .name = "headphone detect", 145 .report = SND_JACK_HEADPHONE, 146 .debounce_time = 150, 147 .invert = 1, 148 }; 149 150 static struct snd_soc_jack tegra_wm8903_mic_jack; 151 152 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { 153 { 154 .pin = "Mic Jack", 155 .mask = SND_JACK_MICROPHONE, 156 }, 157 }; 158 159 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w, 160 struct snd_kcontrol *k, int event) 161 { 162 struct snd_soc_dapm_context *dapm = w->dapm; 163 struct snd_soc_card *card = dapm->card; 164 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 165 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 166 167 if (!(machine->gpio_requested & GPIO_SPKR_EN)) 168 return 0; 169 170 gpio_set_value_cansleep(pdata->gpio_spkr_en, 171 SND_SOC_DAPM_EVENT_ON(event)); 172 173 return 0; 174 } 175 176 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w, 177 struct snd_kcontrol *k, int event) 178 { 179 struct snd_soc_dapm_context *dapm = w->dapm; 180 struct snd_soc_card *card = dapm->card; 181 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 182 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 183 184 if (!(machine->gpio_requested & GPIO_HP_MUTE)) 185 return 0; 186 187 gpio_set_value_cansleep(pdata->gpio_hp_mute, 188 !SND_SOC_DAPM_EVENT_ON(event)); 189 190 return 0; 191 } 192 193 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = { 194 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk), 195 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp), 196 SND_SOC_DAPM_MIC("Mic Jack", NULL), 197 }; 198 199 static const struct snd_soc_dapm_route harmony_audio_map[] = { 200 {"Headphone Jack", NULL, "HPOUTR"}, 201 {"Headphone Jack", NULL, "HPOUTL"}, 202 {"Int Spk", NULL, "ROP"}, 203 {"Int Spk", NULL, "RON"}, 204 {"Int Spk", NULL, "LOP"}, 205 {"Int Spk", NULL, "LON"}, 206 {"Mic Jack", NULL, "MICBIAS"}, 207 {"IN1L", NULL, "Mic Jack"}, 208 }; 209 210 static const struct snd_soc_dapm_route seaboard_audio_map[] = { 211 {"Headphone Jack", NULL, "HPOUTR"}, 212 {"Headphone Jack", NULL, "HPOUTL"}, 213 {"Int Spk", NULL, "ROP"}, 214 {"Int Spk", NULL, "RON"}, 215 {"Int Spk", NULL, "LOP"}, 216 {"Int Spk", NULL, "LON"}, 217 {"Mic Jack", NULL, "MICBIAS"}, 218 {"IN1R", NULL, "Mic Jack"}, 219 }; 220 221 static const struct snd_soc_dapm_route kaen_audio_map[] = { 222 {"Headphone Jack", NULL, "HPOUTR"}, 223 {"Headphone Jack", NULL, "HPOUTL"}, 224 {"Int Spk", NULL, "ROP"}, 225 {"Int Spk", NULL, "RON"}, 226 {"Int Spk", NULL, "LOP"}, 227 {"Int Spk", NULL, "LON"}, 228 {"Mic Jack", NULL, "MICBIAS"}, 229 {"IN2R", NULL, "Mic Jack"}, 230 }; 231 232 static const struct snd_soc_dapm_route aebl_audio_map[] = { 233 {"Headphone Jack", NULL, "HPOUTR"}, 234 {"Headphone Jack", NULL, "HPOUTL"}, 235 {"Int Spk", NULL, "LINEOUTR"}, 236 {"Int Spk", NULL, "LINEOUTL"}, 237 {"Mic Jack", NULL, "MICBIAS"}, 238 {"IN1R", NULL, "Mic Jack"}, 239 }; 240 241 static const struct snd_kcontrol_new tegra_wm8903_controls[] = { 242 SOC_DAPM_PIN_SWITCH("Int Spk"), 243 }; 244 245 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) 246 { 247 struct snd_soc_codec *codec = rtd->codec; 248 struct snd_soc_dapm_context *dapm = &codec->dapm; 249 struct snd_soc_card *card = codec->card; 250 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 251 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 252 struct device_node *np = card->dev->of_node; 253 int ret; 254 255 if (card->dev->platform_data) { 256 memcpy(pdata, card->dev->platform_data, sizeof(*pdata)); 257 } else if (np) { 258 /* 259 * This part must be in init() rather than probe() in order to 260 * guarantee that the WM8903 has been probed, and hence its 261 * GPIO controller registered, which is a pre-condition for 262 * of_get_named_gpio() to be able to map the phandles in the 263 * properties to the controller node. Given this, all 264 * pdata handling is in init() for consistency. 265 */ 266 pdata->gpio_spkr_en = of_get_named_gpio(np, 267 "nvidia,spkr-en-gpios", 0); 268 pdata->gpio_hp_mute = of_get_named_gpio(np, 269 "nvidia,hp-mute-gpios", 0); 270 pdata->gpio_hp_det = of_get_named_gpio(np, 271 "nvidia,hp-det-gpios", 0); 272 pdata->gpio_int_mic_en = of_get_named_gpio(np, 273 "nvidia,int-mic-en-gpios", 0); 274 pdata->gpio_ext_mic_en = of_get_named_gpio(np, 275 "nvidia,ext-mic-en-gpios", 0); 276 } else { 277 dev_err(card->dev, "No platform data supplied\n"); 278 return -EINVAL; 279 } 280 281 if (gpio_is_valid(pdata->gpio_spkr_en)) { 282 ret = gpio_request(pdata->gpio_spkr_en, "spkr_en"); 283 if (ret) { 284 dev_err(card->dev, "cannot get spkr_en gpio\n"); 285 return ret; 286 } 287 machine->gpio_requested |= GPIO_SPKR_EN; 288 289 gpio_direction_output(pdata->gpio_spkr_en, 0); 290 } 291 292 if (gpio_is_valid(pdata->gpio_hp_mute)) { 293 ret = gpio_request(pdata->gpio_hp_mute, "hp_mute"); 294 if (ret) { 295 dev_err(card->dev, "cannot get hp_mute gpio\n"); 296 return ret; 297 } 298 machine->gpio_requested |= GPIO_HP_MUTE; 299 300 gpio_direction_output(pdata->gpio_hp_mute, 1); 301 } 302 303 if (gpio_is_valid(pdata->gpio_int_mic_en)) { 304 ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en"); 305 if (ret) { 306 dev_err(card->dev, "cannot get int_mic_en gpio\n"); 307 return ret; 308 } 309 machine->gpio_requested |= GPIO_INT_MIC_EN; 310 311 /* Disable int mic; enable signal is active-high */ 312 gpio_direction_output(pdata->gpio_int_mic_en, 0); 313 } 314 315 if (gpio_is_valid(pdata->gpio_ext_mic_en)) { 316 ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en"); 317 if (ret) { 318 dev_err(card->dev, "cannot get ext_mic_en gpio\n"); 319 return ret; 320 } 321 machine->gpio_requested |= GPIO_EXT_MIC_EN; 322 323 /* Enable ext mic; enable signal is active-low */ 324 gpio_direction_output(pdata->gpio_ext_mic_en, 0); 325 } 326 327 if (gpio_is_valid(pdata->gpio_hp_det)) { 328 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det; 329 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, 330 &tegra_wm8903_hp_jack); 331 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack, 332 ARRAY_SIZE(tegra_wm8903_hp_jack_pins), 333 tegra_wm8903_hp_jack_pins); 334 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack, 335 1, 336 &tegra_wm8903_hp_jack_gpio); 337 machine->gpio_requested |= GPIO_HP_DET; 338 } 339 340 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, 341 &tegra_wm8903_mic_jack); 342 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack, 343 ARRAY_SIZE(tegra_wm8903_mic_jack_pins), 344 tegra_wm8903_mic_jack_pins); 345 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE, 346 0); 347 348 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 349 350 return 0; 351 } 352 353 static struct snd_soc_dai_link tegra_wm8903_dai = { 354 .name = "WM8903", 355 .stream_name = "WM8903 PCM", 356 .codec_name = "wm8903.0-001a", 357 .platform_name = "tegra-pcm-audio", 358 .cpu_dai_name = "tegra-i2s.0", 359 .codec_dai_name = "wm8903-hifi", 360 .init = tegra_wm8903_init, 361 .ops = &tegra_wm8903_ops, 362 }; 363 364 static struct snd_soc_card snd_soc_tegra_wm8903 = { 365 .name = "tegra-wm8903", 366 .owner = THIS_MODULE, 367 .dai_link = &tegra_wm8903_dai, 368 .num_links = 1, 369 370 .controls = tegra_wm8903_controls, 371 .num_controls = ARRAY_SIZE(tegra_wm8903_controls), 372 .dapm_widgets = tegra_wm8903_dapm_widgets, 373 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets), 374 .fully_routed = true, 375 }; 376 377 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev) 378 { 379 struct snd_soc_card *card = &snd_soc_tegra_wm8903; 380 struct tegra_wm8903 *machine; 381 int ret; 382 383 if (!pdev->dev.platform_data && !pdev->dev.of_node) { 384 dev_err(&pdev->dev, "No platform data supplied\n"); 385 return -EINVAL; 386 } 387 388 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903), 389 GFP_KERNEL); 390 if (!machine) { 391 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n"); 392 ret = -ENOMEM; 393 goto err; 394 } 395 machine->pcm_dev = ERR_PTR(-EINVAL); 396 397 card->dev = &pdev->dev; 398 platform_set_drvdata(pdev, card); 399 snd_soc_card_set_drvdata(card, machine); 400 401 if (pdev->dev.of_node) { 402 ret = snd_soc_of_parse_card_name(card, "nvidia,model"); 403 if (ret) 404 goto err; 405 406 ret = snd_soc_of_parse_audio_routing(card, 407 "nvidia,audio-routing"); 408 if (ret) 409 goto err; 410 411 tegra_wm8903_dai.codec_name = NULL; 412 tegra_wm8903_dai.codec_of_node = of_parse_phandle( 413 pdev->dev.of_node, "nvidia,audio-codec", 0); 414 if (!tegra_wm8903_dai.codec_of_node) { 415 dev_err(&pdev->dev, 416 "Property 'nvidia,audio-codec' missing or invalid\n"); 417 ret = -EINVAL; 418 goto err; 419 } 420 421 tegra_wm8903_dai.cpu_dai_name = NULL; 422 tegra_wm8903_dai.cpu_dai_of_node = of_parse_phandle( 423 pdev->dev.of_node, "nvidia,i2s-controller", 0); 424 if (!tegra_wm8903_dai.cpu_dai_of_node) { 425 dev_err(&pdev->dev, 426 "Property 'nvidia,i2s-controller' missing or invalid\n"); 427 ret = -EINVAL; 428 goto err; 429 } 430 431 machine->pcm_dev = platform_device_register_simple( 432 "tegra-pcm-audio", -1, NULL, 0); 433 if (IS_ERR(machine->pcm_dev)) { 434 dev_err(&pdev->dev, 435 "Can't instantiate tegra-pcm-audio\n"); 436 ret = PTR_ERR(machine->pcm_dev); 437 goto err; 438 } 439 } else { 440 if (machine_is_harmony()) { 441 card->dapm_routes = harmony_audio_map; 442 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map); 443 } else if (machine_is_seaboard()) { 444 card->dapm_routes = seaboard_audio_map; 445 card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map); 446 } else if (machine_is_kaen()) { 447 card->dapm_routes = kaen_audio_map; 448 card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map); 449 } else { 450 card->dapm_routes = aebl_audio_map; 451 card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map); 452 } 453 } 454 455 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); 456 if (ret) 457 goto err_unregister; 458 459 ret = snd_soc_register_card(card); 460 if (ret) { 461 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 462 ret); 463 goto err_fini_utils; 464 } 465 466 return 0; 467 468 err_fini_utils: 469 tegra_asoc_utils_fini(&machine->util_data); 470 err_unregister: 471 if (!IS_ERR(machine->pcm_dev)) 472 platform_device_unregister(machine->pcm_dev); 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 if (!IS_ERR(machine->pcm_dev)) 501 platform_device_unregister(machine->pcm_dev); 502 503 return 0; 504 } 505 506 static const struct of_device_id tegra_wm8903_of_match[] __devinitconst = { 507 { .compatible = "nvidia,tegra-audio-wm8903", }, 508 {}, 509 }; 510 511 static struct platform_driver tegra_wm8903_driver = { 512 .driver = { 513 .name = DRV_NAME, 514 .owner = THIS_MODULE, 515 .pm = &snd_soc_pm_ops, 516 .of_match_table = tegra_wm8903_of_match, 517 }, 518 .probe = tegra_wm8903_driver_probe, 519 .remove = __devexit_p(tegra_wm8903_driver_remove), 520 }; 521 module_platform_driver(tegra_wm8903_driver); 522 523 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); 524 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); 525 MODULE_LICENSE("GPL"); 526 MODULE_ALIAS("platform:" DRV_NAME); 527 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); 528