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 <sound/core.h> 38 #include <sound/jack.h> 39 #include <sound/pcm.h> 40 #include <sound/pcm_params.h> 41 #include <sound/soc.h> 42 #include <sound/tegra_wm8903.h> 43 44 #include "../codecs/wm8903.h" 45 46 #include "tegra_asoc_utils.h" 47 48 #define DRV_NAME "tegra-snd-wm8903" 49 50 struct tegra_wm8903 { 51 struct tegra_wm8903_platform_data pdata; 52 struct tegra_asoc_utils_data util_data; 53 }; 54 55 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream, 56 struct snd_pcm_hw_params *params) 57 { 58 struct snd_soc_pcm_runtime *rtd = substream->private_data; 59 struct snd_soc_dai *codec_dai = rtd->codec_dai; 60 struct snd_soc_codec *codec = codec_dai->codec; 61 struct snd_soc_card *card = codec->card; 62 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 63 int srate, mclk; 64 int err; 65 66 srate = params_rate(params); 67 switch (srate) { 68 case 64000: 69 case 88200: 70 case 96000: 71 mclk = 128 * srate; 72 break; 73 default: 74 mclk = 256 * srate; 75 break; 76 } 77 /* FIXME: Codec only requires >= 3MHz if OSR==0 */ 78 while (mclk < 6000000) 79 mclk *= 2; 80 81 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); 82 if (err < 0) { 83 dev_err(card->dev, "Can't configure clocks\n"); 84 return err; 85 } 86 87 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, 88 SND_SOC_CLOCK_IN); 89 if (err < 0) { 90 dev_err(card->dev, "codec_dai clock not set\n"); 91 return err; 92 } 93 94 return 0; 95 } 96 97 static struct snd_soc_ops tegra_wm8903_ops = { 98 .hw_params = tegra_wm8903_hw_params, 99 }; 100 101 static struct snd_soc_jack tegra_wm8903_hp_jack; 102 103 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = { 104 { 105 .pin = "Headphone Jack", 106 .mask = SND_JACK_HEADPHONE, 107 }, 108 }; 109 110 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = { 111 .name = "headphone detect", 112 .report = SND_JACK_HEADPHONE, 113 .debounce_time = 150, 114 .invert = 1, 115 }; 116 117 static struct snd_soc_jack tegra_wm8903_mic_jack; 118 119 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { 120 { 121 .pin = "Mic Jack", 122 .mask = SND_JACK_MICROPHONE, 123 }, 124 }; 125 126 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w, 127 struct snd_kcontrol *k, int event) 128 { 129 struct snd_soc_dapm_context *dapm = w->dapm; 130 struct snd_soc_card *card = dapm->card; 131 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 132 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 133 134 if (!gpio_is_valid(pdata->gpio_spkr_en)) 135 return 0; 136 137 gpio_set_value_cansleep(pdata->gpio_spkr_en, 138 SND_SOC_DAPM_EVENT_ON(event)); 139 140 return 0; 141 } 142 143 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w, 144 struct snd_kcontrol *k, int event) 145 { 146 struct snd_soc_dapm_context *dapm = w->dapm; 147 struct snd_soc_card *card = dapm->card; 148 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 149 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 150 151 if (!gpio_is_valid(pdata->gpio_hp_mute)) 152 return 0; 153 154 gpio_set_value_cansleep(pdata->gpio_hp_mute, 155 !SND_SOC_DAPM_EVENT_ON(event)); 156 157 return 0; 158 } 159 160 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = { 161 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk), 162 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp), 163 SND_SOC_DAPM_MIC("Mic Jack", NULL), 164 }; 165 166 static const struct snd_soc_dapm_route harmony_audio_map[] = { 167 {"Headphone Jack", NULL, "HPOUTR"}, 168 {"Headphone Jack", NULL, "HPOUTL"}, 169 {"Int Spk", NULL, "ROP"}, 170 {"Int Spk", NULL, "RON"}, 171 {"Int Spk", NULL, "LOP"}, 172 {"Int Spk", NULL, "LON"}, 173 {"Mic Jack", NULL, "MICBIAS"}, 174 {"IN1L", NULL, "Mic Jack"}, 175 }; 176 177 static const struct snd_kcontrol_new tegra_wm8903_controls[] = { 178 SOC_DAPM_PIN_SWITCH("Int Spk"), 179 }; 180 181 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) 182 { 183 struct snd_soc_dai *codec_dai = rtd->codec_dai; 184 struct snd_soc_codec *codec = codec_dai->codec; 185 struct snd_soc_dapm_context *dapm = &codec->dapm; 186 struct snd_soc_card *card = codec->card; 187 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 188 struct tegra_wm8903_platform_data *pdata = &machine->pdata; 189 190 if (gpio_is_valid(pdata->gpio_hp_det)) { 191 tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det; 192 snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, 193 &tegra_wm8903_hp_jack); 194 snd_soc_jack_add_pins(&tegra_wm8903_hp_jack, 195 ARRAY_SIZE(tegra_wm8903_hp_jack_pins), 196 tegra_wm8903_hp_jack_pins); 197 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack, 198 1, 199 &tegra_wm8903_hp_jack_gpio); 200 } 201 202 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, 203 &tegra_wm8903_mic_jack); 204 snd_soc_jack_add_pins(&tegra_wm8903_mic_jack, 205 ARRAY_SIZE(tegra_wm8903_mic_jack_pins), 206 tegra_wm8903_mic_jack_pins); 207 wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE, 208 0); 209 210 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); 211 212 return 0; 213 } 214 215 static int tegra_wm8903_remove(struct snd_soc_card *card) 216 { 217 struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]); 218 struct snd_soc_dai *codec_dai = rtd->codec_dai; 219 struct snd_soc_codec *codec = codec_dai->codec; 220 221 wm8903_mic_detect(codec, NULL, 0, 0); 222 223 return 0; 224 } 225 226 static struct snd_soc_dai_link tegra_wm8903_dai = { 227 .name = "WM8903", 228 .stream_name = "WM8903 PCM", 229 .codec_name = "wm8903.0-001a", 230 .platform_name = "tegra20-i2s.0", 231 .cpu_dai_name = "tegra20-i2s.0", 232 .codec_dai_name = "wm8903-hifi", 233 .init = tegra_wm8903_init, 234 .ops = &tegra_wm8903_ops, 235 .dai_fmt = SND_SOC_DAIFMT_I2S | 236 SND_SOC_DAIFMT_NB_NF | 237 SND_SOC_DAIFMT_CBS_CFS, 238 }; 239 240 static struct snd_soc_card snd_soc_tegra_wm8903 = { 241 .name = "tegra-wm8903", 242 .owner = THIS_MODULE, 243 .dai_link = &tegra_wm8903_dai, 244 .num_links = 1, 245 246 .remove = tegra_wm8903_remove, 247 248 .controls = tegra_wm8903_controls, 249 .num_controls = ARRAY_SIZE(tegra_wm8903_controls), 250 .dapm_widgets = tegra_wm8903_dapm_widgets, 251 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets), 252 .fully_routed = true, 253 }; 254 255 static int tegra_wm8903_driver_probe(struct platform_device *pdev) 256 { 257 struct device_node *np = pdev->dev.of_node; 258 struct snd_soc_card *card = &snd_soc_tegra_wm8903; 259 struct tegra_wm8903 *machine; 260 struct tegra_wm8903_platform_data *pdata; 261 int ret; 262 263 if (!pdev->dev.platform_data && !pdev->dev.of_node) { 264 dev_err(&pdev->dev, "No platform data supplied\n"); 265 return -EINVAL; 266 } 267 268 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903), 269 GFP_KERNEL); 270 if (!machine) { 271 dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n"); 272 ret = -ENOMEM; 273 goto err; 274 } 275 pdata = &machine->pdata; 276 277 card->dev = &pdev->dev; 278 platform_set_drvdata(pdev, card); 279 snd_soc_card_set_drvdata(card, machine); 280 281 if (pdev->dev.platform_data) { 282 memcpy(pdata, card->dev->platform_data, sizeof(*pdata)); 283 } else if (np) { 284 pdata->gpio_spkr_en = of_get_named_gpio(np, 285 "nvidia,spkr-en-gpios", 0); 286 if (pdata->gpio_spkr_en == -EPROBE_DEFER) 287 return -EPROBE_DEFER; 288 289 pdata->gpio_hp_mute = of_get_named_gpio(np, 290 "nvidia,hp-mute-gpios", 0); 291 if (pdata->gpio_hp_mute == -EPROBE_DEFER) 292 return -EPROBE_DEFER; 293 294 pdata->gpio_hp_det = of_get_named_gpio(np, 295 "nvidia,hp-det-gpios", 0); 296 if (pdata->gpio_hp_det == -EPROBE_DEFER) 297 return -EPROBE_DEFER; 298 299 pdata->gpio_int_mic_en = of_get_named_gpio(np, 300 "nvidia,int-mic-en-gpios", 0); 301 if (pdata->gpio_int_mic_en == -EPROBE_DEFER) 302 return -EPROBE_DEFER; 303 304 pdata->gpio_ext_mic_en = of_get_named_gpio(np, 305 "nvidia,ext-mic-en-gpios", 0); 306 if (pdata->gpio_ext_mic_en == -EPROBE_DEFER) 307 return -EPROBE_DEFER; 308 } 309 310 if (np) { 311 ret = snd_soc_of_parse_card_name(card, "nvidia,model"); 312 if (ret) 313 goto err; 314 315 ret = snd_soc_of_parse_audio_routing(card, 316 "nvidia,audio-routing"); 317 if (ret) 318 goto err; 319 320 tegra_wm8903_dai.codec_name = NULL; 321 tegra_wm8903_dai.codec_of_node = of_parse_phandle(np, 322 "nvidia,audio-codec", 0); 323 if (!tegra_wm8903_dai.codec_of_node) { 324 dev_err(&pdev->dev, 325 "Property 'nvidia,audio-codec' missing or invalid\n"); 326 ret = -EINVAL; 327 goto err; 328 } 329 330 tegra_wm8903_dai.cpu_dai_name = NULL; 331 tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np, 332 "nvidia,i2s-controller", 0); 333 if (!tegra_wm8903_dai.cpu_of_node) { 334 dev_err(&pdev->dev, 335 "Property 'nvidia,i2s-controller' missing or invalid\n"); 336 ret = -EINVAL; 337 goto err; 338 } 339 340 tegra_wm8903_dai.platform_name = NULL; 341 tegra_wm8903_dai.platform_of_node = 342 tegra_wm8903_dai.cpu_of_node; 343 } else { 344 card->dapm_routes = harmony_audio_map; 345 card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map); 346 } 347 348 if (gpio_is_valid(pdata->gpio_spkr_en)) { 349 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_spkr_en, 350 GPIOF_OUT_INIT_LOW, "spkr_en"); 351 if (ret) { 352 dev_err(card->dev, "cannot get spkr_en gpio\n"); 353 return ret; 354 } 355 } 356 357 if (gpio_is_valid(pdata->gpio_hp_mute)) { 358 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_hp_mute, 359 GPIOF_OUT_INIT_HIGH, "hp_mute"); 360 if (ret) { 361 dev_err(card->dev, "cannot get hp_mute gpio\n"); 362 return ret; 363 } 364 } 365 366 if (gpio_is_valid(pdata->gpio_int_mic_en)) { 367 /* Disable int mic; enable signal is active-high */ 368 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_int_mic_en, 369 GPIOF_OUT_INIT_LOW, "int_mic_en"); 370 if (ret) { 371 dev_err(card->dev, "cannot get int_mic_en gpio\n"); 372 return ret; 373 } 374 } 375 376 if (gpio_is_valid(pdata->gpio_ext_mic_en)) { 377 /* Enable ext mic; enable signal is active-low */ 378 ret = devm_gpio_request_one(&pdev->dev, pdata->gpio_ext_mic_en, 379 GPIOF_OUT_INIT_LOW, "ext_mic_en"); 380 if (ret) { 381 dev_err(card->dev, "cannot get ext_mic_en gpio\n"); 382 return ret; 383 } 384 } 385 386 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); 387 if (ret) 388 goto err; 389 390 ret = snd_soc_register_card(card); 391 if (ret) { 392 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 393 ret); 394 goto err_fini_utils; 395 } 396 397 return 0; 398 399 err_fini_utils: 400 tegra_asoc_utils_fini(&machine->util_data); 401 err: 402 return ret; 403 } 404 405 static int tegra_wm8903_driver_remove(struct platform_device *pdev) 406 { 407 struct snd_soc_card *card = platform_get_drvdata(pdev); 408 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); 409 410 snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1, 411 &tegra_wm8903_hp_jack_gpio); 412 413 snd_soc_unregister_card(card); 414 415 tegra_asoc_utils_fini(&machine->util_data); 416 417 return 0; 418 } 419 420 static const struct of_device_id tegra_wm8903_of_match[] = { 421 { .compatible = "nvidia,tegra-audio-wm8903", }, 422 {}, 423 }; 424 425 static struct platform_driver tegra_wm8903_driver = { 426 .driver = { 427 .name = DRV_NAME, 428 .owner = THIS_MODULE, 429 .pm = &snd_soc_pm_ops, 430 .of_match_table = tegra_wm8903_of_match, 431 }, 432 .probe = tegra_wm8903_driver_probe, 433 .remove = tegra_wm8903_driver_remove, 434 }; 435 module_platform_driver(tegra_wm8903_driver); 436 437 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); 438 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); 439 MODULE_LICENSE("GPL"); 440 MODULE_ALIAS("platform:" DRV_NAME); 441 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); 442