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 <linux/module.h> 32 #include <linux/platform_device.h> 33 #include <linux/slab.h> 34 #include <linux/gpio.h> 35 #include <linux/of_gpio.h> 36 37 #include <mach/tegra_wm8903_pdata.h> 38 39 #include <sound/core.h> 40 #include <sound/jack.h> 41 #include <sound/pcm.h> 42 #include <sound/pcm_params.h> 43 #include <sound/soc.h> 44 45 #include "../codecs/wm8903.h" 46 47 #include "tegra_asoc_utils.h" 48 49 #define DRV_NAME "tegra-snd-wm8903" 50 51 struct tegra_wm8903 { 52 struct tegra_wm8903_platform_data pdata; 53 struct tegra_asoc_utils_data util_data; 54 }; 55 56 static int tegra_wm8903_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_codec *codec = codec_dai->codec; 62 struct snd_soc_card *card = codec->card; 63 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 64 int srate, mclk; 65 int err; 66 67 srate = params_rate(params); 68 switch (srate) { 69 case 64000: 70 case 88200: 71 case 96000: 72 mclk = 128 * srate; 73 break; 74 default: 75 mclk = 256 * srate; 76 break; 77 } 78 /* FIXME: Codec only requires >= 3MHz if OSR==0 */ 79 while (mclk < 6000000) 80 mclk *= 2; 81 82 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); 83 if (err < 0) { 84 dev_err(card->dev, "Can't configure clocks\n"); 85 return err; 86 } 87 88 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 89 SND_SOC_CLOCK_IN); 90 if (err < 0) { 91 dev_err(card->dev, "codec_dai clock not set\n"); 92 return err; 93 } 94 95 return 0; 96 } 97 98 static struct snd_soc_ops tegra_wm8903_ops = { 99 .hw_params = tegra_wm8903_hw_params, 100 }; 101 102 static struct snd_soc_jack tegra_wm8903_hp_jack; 103 104 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = { 105 { 106 .pin = "Headphone Jack", 107 .mask = SND_JACK_HEADPHONE, 108 }, 109 }; 110 111 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = { 112 .name = "headphone detect", 113 .report = SND_JACK_HEADPHONE, 114 .debounce_time = 150, 115 .invert = 1, 116 }; 117 118 static struct snd_soc_jack tegra_wm8903_mic_jack; 119 120 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { 121 { 122 .pin = "Mic Jack", 123 .mask = SND_JACK_MICROPHONE, 124 }, 125 }; 126 127 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w, 128 struct snd_kcontrol *k, int event) 129 { 130 struct snd_soc_dapm_context *dapm = w->dapm; 131 struct snd_soc_card *card = dapm->card; 132 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 133 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 134 135 if (!gpio_is_valid(pdata->gpio_spkr_en)) 136 return 0; 137 138 gpio_set_value_cansleep(pdata->gpio_spkr_en, 139 SND_SOC_DAPM_EVENT_ON(event)); 140 141 return 0; 142 } 143 144 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w, 145 struct snd_kcontrol *k, int event) 146 { 147 struct snd_soc_dapm_context *dapm = w->dapm; 148 struct snd_soc_card *card = dapm->card; 149 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 150 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 151 152 if (!gpio_is_valid(pdata->gpio_hp_mute)) 153 return 0; 154 155 gpio_set_value_cansleep(pdata->gpio_hp_mute, 156 !SND_SOC_DAPM_EVENT_ON(event)); 157 158 return 0; 159 } 160 161 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = { 162 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk), 163 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp), 164 SND_SOC_DAPM_MIC("Mic Jack", NULL), 165 }; 166 167 static const struct snd_soc_dapm_route harmony_audio_map[] = { 168 {"Headphone Jack", NULL, "HPOUTR"}, 169 {"Headphone Jack", NULL, "HPOUTL"}, 170 {"Int Spk", NULL, "ROP"}, 171 {"Int Spk", NULL, "RON"}, 172 {"Int Spk", NULL, "LOP"}, 173 {"Int Spk", NULL, "LON"}, 174 {"Mic Jack", NULL, "MICBIAS"}, 175 {"IN1L", NULL, "Mic Jack"}, 176 }; 177 178 static const struct snd_kcontrol_new tegra_wm8903_controls[] = { 179 SOC_DAPM_PIN_SWITCH("Int Spk"), 180 }; 181 182 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) 183 { 184 struct snd_soc_dai *codec_dai = rtd->codec_dai; 185 struct snd_soc_codec *codec = codec_dai->codec; 186 struct snd_soc_dapm_context *dapm = &codec->dapm; 187 struct snd_soc_card *card = codec->card; 188 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 189 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 190 191 if (gpio_is_valid(pdata->gpio_hp_det)) { 192 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det; 193 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, 194 &tegra_wm8903_hp_jack); 195 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack, 196 ARRAY_SIZE(tegra_wm8903_hp_jack_pins), 197 tegra_wm8903_hp_jack_pins); 198 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack, 199 1, 200 &tegra_wm8903_hp_jack_gpio); 201 } 202 203 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, 204 &tegra_wm8903_mic_jack); 205 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack, 206 ARRAY_SIZE(tegra_wm8903_mic_jack_pins), 207 tegra_wm8903_mic_jack_pins); 208 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE, 209 0); 210 211 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 212 213 return 0; 214 } 215 216 static int tegra_wm8903_remove(struct snd_soc_card *card) 217 { 218 struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]); 219 struct snd_soc_dai *codec_dai = rtd->codec_dai; 220 struct snd_soc_codec *codec = codec_dai->codec; 221 222 wm8903_mic_detect(codec, NULL, 0, 0); 223 224 return 0; 225 } 226 227 static struct snd_soc_dai_link tegra_wm8903_dai = { 228 .name = "WM8903", 229 .stream_name = "WM8903 PCM", 230 .codec_name = "wm8903.0-001a", 231 .platform_name = "tegra20-i2s.0", 232 .cpu_dai_name = "tegra20-i2s.0", 233 .codec_dai_name = "wm8903-hifi", 234 .init = tegra_wm8903_init, 235 .ops = &tegra_wm8903_ops, 236 .dai_fmt = SND_SOC_DAIFMT_I2S | 237 SND_SOC_DAIFMT_NB_NF | 238 SND_SOC_DAIFMT_CBS_CFS, 239 }; 240 241 static struct snd_soc_card snd_soc_tegra_wm8903 = { 242 .name = "tegra-wm8903", 243 .owner = THIS_MODULE, 244 .dai_link = &tegra_wm8903_dai, 245 .num_links = 1, 246 247 .remove = tegra_wm8903_remove, 248 249 .controls = tegra_wm8903_controls, 250 .num_controls = ARRAY_SIZE(tegra_wm8903_controls), 251 .dapm_widgets = tegra_wm8903_dapm_widgets, 252 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets), 253 .fully_routed = true, 254 }; 255 256 static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev) 257 { 258 struct device_node *np = pdev->dev.of_node; 259 struct snd_soc_card *card = &snd_soc_tegra_wm8903; 260 struct tegra_wm8903 *machine; 261 struct tegra_wm8903_platform_data *pdata; 262 int ret; 263 264 if (!pdev->dev.platform_data && !pdev->dev.of_node) { 265 dev_err(&pdev->dev, "No platform data supplied\n"); 266 return -EINVAL; 267 } 268 269 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903), 270 GFP_KERNEL); 271 if (!machine) { 272 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n"); 273 ret = -ENOMEM; 274 goto err; 275 } 276 pdata = &machine->pdata; 277 278 card->dev = &pdev->dev; 279 platform_set_drvdata(pdev, card); 280 snd_soc_card_set_drvdata(card, machine); 281 282 if (pdev->dev.platform_data) { 283 memcpy(pdata, card->dev->platform_data, sizeof(*pdata)); 284 } else if (np) { 285 pdata->gpio_spkr_en = of_get_named_gpio(np, 286 "nvidia,spkr-en-gpios", 0); 287 if (pdata->gpio_spkr_en == -ENODEV) 288 return -EPROBE_DEFER; 289 290 pdata->gpio_hp_mute = of_get_named_gpio(np, 291 "nvidia,hp-mute-gpios", 0); 292 if (pdata->gpio_hp_mute == -ENODEV) 293 return -EPROBE_DEFER; 294 295 pdata->gpio_hp_det = of_get_named_gpio(np, 296 "nvidia,hp-det-gpios", 0); 297 if (pdata->gpio_hp_det == -ENODEV) 298 return -EPROBE_DEFER; 299 300 pdata->gpio_int_mic_en = of_get_named_gpio(np, 301 "nvidia,int-mic-en-gpios", 0); 302 if (pdata->gpio_int_mic_en == -ENODEV) 303 return -EPROBE_DEFER; 304 305 pdata->gpio_ext_mic_en = of_get_named_gpio(np, 306 "nvidia,ext-mic-en-gpios", 0); 307 if (pdata->gpio_ext_mic_en == -ENODEV) 308 return -EPROBE_DEFER; 309 } 310 311 if (np) { 312 ret = snd_soc_of_parse_card_name(card, "nvidia,model"); 313 if (ret) 314 goto err; 315 316 ret = snd_soc_of_parse_audio_routing(card, 317 "nvidia,audio-routing"); 318 if (ret) 319 goto err; 320 321 tegra_wm8903_dai.codec_name = NULL; 322 tegra_wm8903_dai.codec_of_node = of_parse_phandle(np, 323 "nvidia,audio-codec", 0); 324 if (!tegra_wm8903_dai.codec_of_node) { 325 dev_err(&pdev->dev, 326 "Property 'nvidia,audio-codec' missing or invalid\n"); 327 ret = -EINVAL; 328 goto err; 329 } 330 331 tegra_wm8903_dai.cpu_dai_name = NULL; 332 tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np, 333 "nvidia,i2s-controller", 0); 334 if (!tegra_wm8903_dai.cpu_of_node) { 335 dev_err(&pdev->dev, 336 "Property 'nvidia,i2s-controller' missing or invalid\n"); 337 ret = -EINVAL; 338 goto err; 339 } 340 341 tegra_wm8903_dai.platform_name = NULL; 342 tegra_wm8903_dai.platform_of_node = 343 tegra_wm8903_dai.cpu_of_node; 344 } else { 345 card->dapm_routes = harmony_audio_map; 346 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map); 347 } 348 349 if (gpio_is_valid(pdata->gpio_spkr_en)) { 350 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_spkr_en, 351 GPIOF_OUT_INIT_LOW, "spkr_en"); 352 if (ret) { 353 dev_err(card->dev, "cannot get spkr_en gpio\n"); 354 return ret; 355 } 356 } 357 358 if (gpio_is_valid(pdata->gpio_hp_mute)) { 359 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_hp_mute, 360 GPIOF_OUT_INIT_HIGH, "hp_mute"); 361 if (ret) { 362 dev_err(card->dev, "cannot get hp_mute gpio\n"); 363 return ret; 364 } 365 } 366 367 if (gpio_is_valid(pdata->gpio_int_mic_en)) { 368 /* Disable int mic; enable signal is active-high */ 369 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_int_mic_en, 370 GPIOF_OUT_INIT_LOW, "int_mic_en"); 371 if (ret) { 372 dev_err(card->dev, "cannot get int_mic_en gpio\n"); 373 return ret; 374 } 375 } 376 377 if (gpio_is_valid(pdata->gpio_ext_mic_en)) { 378 /* Enable ext mic; enable signal is active-low */ 379 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_ext_mic_en, 380 GPIOF_OUT_INIT_LOW, "ext_mic_en"); 381 if (ret) { 382 dev_err(card->dev, "cannot get ext_mic_en gpio\n"); 383 return ret; 384 } 385 } 386 387 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); 388 if (ret) 389 goto err; 390 391 ret = snd_soc_register_card(card); 392 if (ret) { 393 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 394 ret); 395 goto err_fini_utils; 396 } 397 398 return 0; 399 400 err_fini_utils: 401 tegra_asoc_utils_fini(&machine->util_data); 402 err: 403 return ret; 404 } 405 406 static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev) 407 { 408 struct snd_soc_card *card = platform_get_drvdata(pdev); 409 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 410 411 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1, 412 &tegra_wm8903_hp_jack_gpio); 413 414 snd_soc_unregister_card(card); 415 416 tegra_asoc_utils_fini(&machine->util_data); 417 418 return 0; 419 } 420 421 static const struct of_device_id tegra_wm8903_of_match[] __devinitconst = { 422 { .compatible = "nvidia,tegra-audio-wm8903", }, 423 {}, 424 }; 425 426 static struct platform_driver tegra_wm8903_driver = { 427 .driver = { 428 .name = DRV_NAME, 429 .owner = THIS_MODULE, 430 .pm = &snd_soc_pm_ops, 431 .of_match_table = tegra_wm8903_of_match, 432 }, 433 .probe = tegra_wm8903_driver_probe, 434 .remove = __devexit_p(tegra_wm8903_driver_remove), 435 }; 436 module_platform_driver(tegra_wm8903_driver); 437 438 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); 439 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); 440 MODULE_LICENSE("GPL"); 441 MODULE_ALIAS("platform:" DRV_NAME); 442 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); 443