sound/soc/tegra/tegra_rt5677.c

   1 /*
   2 * tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
   3  *
   4  * Copyright (c) 2014, The Chromium OS Authors.  All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Based on code copyright/by:
  19  *
  20  * Copyright (C) 2010-2012 - NVIDIA, Inc.
  21  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  22  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  23  * Copyright 2007 Wolfson Microelectronics PLC.
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/slab.h>
  29 #include <linux/gpio.h>
  30 #include <linux/of_gpio.h>
  31
  32 #include <sound/core.h>
  33 #include <sound/jack.h>
  34 #include <sound/pcm.h>
  35 #include <sound/pcm_params.h>
  36 #include <sound/soc.h>
  37
  38 #include "../codecs/rt5677.h"
  39
  40 #include "tegra_asoc_utils.h"
  41
  42 #define DRV_NAME "tegra-snd-rt5677"
  43
  44 struct tegra_rt5677 {
  45         struct tegra_asoc_utils_data util_data;
  46         int gpio_hp_det;
  47         int gpio_hp_en;
  48         int gpio_mic_present;
  49         int gpio_dmic_clk_en;
  50 };
  51
  52 static int tegra_rt5677_asoc_hw_params(struct snd_pcm_substream *substream,
  53                                         struct snd_pcm_hw_params *params)
  54 {
  55         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  56         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  57         struct snd_soc_card *card = rtd->card;
  58         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
  59         int srate, mclk, err;
  60
  61         srate = params_rate(params);
  62         mclk = 256 * srate;
  63
  64         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  65         if (err < 0) {
  66                 dev_err(card->dev, "Can't configure clocks\n");
  67                 return err;
  68         }
  69
  70         err = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, mclk,
  71                                         SND_SOC_CLOCK_IN);
  72         if (err < 0) {
  73                 dev_err(card->dev, "codec_dai clock not set\n");
  74                 return err;
  75         }
  76
  77         return 0;
  78 }
  79
  80 static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
  81                         struct snd_kcontrol *k, int event)
  82 {
  83         struct snd_soc_dapm_context *dapm = w->dapm;
  84         struct snd_soc_card *card = dapm->card;
  85         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
  86
  87         if (!gpio_is_valid(machine->gpio_hp_en))
  88                 return 0;
  89
  90         gpio_set_value_cansleep(machine->gpio_hp_en,
  91                 SND_SOC_DAPM_EVENT_ON(event));
  92
  93         return 0;
  94 }
  95
  96 static struct snd_soc_ops tegra_rt5677_ops = {
  97         .hw_params = tegra_rt5677_asoc_hw_params,
  98 };
  99
 100 static struct snd_soc_jack tegra_rt5677_hp_jack;
 101
 102 static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
 103         .pin = "Headphone",
 104         .mask = SND_JACK_HEADPHONE,
 105 };
 106 static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
 107         .name = "Headphone detection",
 108         .report = SND_JACK_HEADPHONE,
 109         .debounce_time = 150,
 110 };
 111
 112 static struct snd_soc_jack tegra_rt5677_mic_jack;
 113
 114 static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
 115         .pin = "Headset Mic",
 116         .mask = SND_JACK_MICROPHONE,
 117 };
 118
 119 static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
 120         .name = "Headset Mic detection",
 121         .report = SND_JACK_MICROPHONE,
 122         .debounce_time = 150,
 123         .invert = 1
 124 };
 125
 126 static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
 127         SND_SOC_DAPM_SPK("Speaker", NULL),
 128         SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
 129         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 130         SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
 131         SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
 132 };
 133
 134 static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
 135         SOC_DAPM_PIN_SWITCH("Speaker"),
 136         SOC_DAPM_PIN_SWITCH("Headphone"),
 137         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 138         SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
 139         SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
 140 };
 141
 142 static int tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime *rtd)
 143 {
 144         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 145         struct snd_soc_codec *codec = codec_dai->codec;
 146         struct snd_soc_dapm_context *dapm = &codec->dapm;
 147         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
 148
 149         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 150                               &tegra_rt5677_hp_jack,
 151                               &tegra_rt5677_hp_jack_pins, 1);
 152
 153         if (gpio_is_valid(machine->gpio_hp_det)) {
 154                 tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
 155                 snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
 156                                 &tegra_rt5677_hp_jack_gpio);
 157         }
 158
 159
 160         snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
 161                               &tegra_rt5677_mic_jack,
 162                               &tegra_rt5677_mic_jack_pins, 1);
 163
 164         if (gpio_is_valid(machine->gpio_mic_present)) {
 165                 tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
 166                 snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
 167                                 &tegra_rt5677_mic_jack_gpio);
 168         }
 169
 170         snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
 171
 172         return 0;
 173 }
 174
 175 static int tegra_rt5677_card_remove(struct snd_soc_card *card)
 176 {
 177         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 178
 179         if (gpio_is_valid(machine->gpio_hp_det)) {
 180                 snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1,
 181                                 &tegra_rt5677_hp_jack_gpio);
 182         }
 183
 184         if (gpio_is_valid(machine->gpio_mic_present)) {
 185                 snd_soc_jack_free_gpios(&tegra_rt5677_mic_jack, 1,
 186                                 &tegra_rt5677_mic_jack_gpio);
 187         }
 188
 189         return 0;
 190 }
 191
 192 static struct snd_soc_dai_link tegra_rt5677_dai = {
 193         .name = "RT5677",
 194         .stream_name = "RT5677 PCM",
 195         .codec_dai_name = "rt5677-aif1",
 196         .init = tegra_rt5677_asoc_init,
 197         .ops = &tegra_rt5677_ops,
 198         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 199                         SND_SOC_DAIFMT_CBS_CFS,
 200 };
 201
 202 static struct snd_soc_card snd_soc_tegra_rt5677 = {
 203         .name = "tegra-rt5677",
 204         .owner = THIS_MODULE,
 205         .remove = tegra_rt5677_card_remove,
 206         .dai_link = &tegra_rt5677_dai,
 207         .num_links = 1,
 208         .controls = tegra_rt5677_controls,
 209         .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
 210         .dapm_widgets = tegra_rt5677_dapm_widgets,
 211         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
 212         .fully_routed = true,
 213 };
 214
 215 static int tegra_rt5677_probe(struct platform_device *pdev)
 216 {
 217         struct device_node *np = pdev->dev.of_node;
 218         struct snd_soc_card *card = &snd_soc_tegra_rt5677;
 219         struct tegra_rt5677 *machine;
 220         int ret;
 221
 222         machine = devm_kzalloc(&pdev->dev,
 223                         sizeof(struct tegra_rt5677), GFP_KERNEL);
 224         if (!machine)
 225                 return -ENOMEM;
 226
 227         card->dev = &pdev->dev;
 228         platform_set_drvdata(pdev, card);
 229         snd_soc_card_set_drvdata(card, machine);
 230
 231         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 232         if (machine->gpio_hp_det == -EPROBE_DEFER)
 233                 return -EPROBE_DEFER;
 234
 235         machine->gpio_mic_present = of_get_named_gpio(np,
 236                         "nvidia,mic-present-gpios", 0);
 237         if (machine->gpio_mic_present == -EPROBE_DEFER)
 238                 return -EPROBE_DEFER;
 239
 240         machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
 241         if (machine->gpio_hp_en == -EPROBE_DEFER)
 242                 return -EPROBE_DEFER;
 243         if (gpio_is_valid(machine->gpio_hp_en)) {
 244                 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
 245                                 GPIOF_OUT_INIT_LOW, "hp_en");
 246                 if (ret) {
 247                         dev_err(card->dev, "cannot get hp_en gpio\n");
 248                         return ret;
 249                 }
 250         }
 251
 252         machine->gpio_dmic_clk_en = of_get_named_gpio(np,
 253                 "nvidia,dmic-clk-en-gpios", 0);
 254         if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
 255                 return -EPROBE_DEFER;
 256         if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
 257                 ret = devm_gpio_request_one(&pdev->dev,
 258                                 machine->gpio_dmic_clk_en,
 259                                 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
 260                 if (ret) {
 261                         dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
 262                         return ret;
 263                 }
 264         }
 265
 266         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 267         if (ret)
 268                 goto err;
 269
 270         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 271         if (ret)
 272                 goto err;
 273
 274         tegra_rt5677_dai.codec_of_node = of_parse_phandle(np,
 275                         "nvidia,audio-codec", 0);
 276         if (!tegra_rt5677_dai.codec_of_node) {
 277                 dev_err(&pdev->dev,
 278                         "Property 'nvidia,audio-codec' missing or invalid\n");
 279                 ret = -EINVAL;
 280                 goto err;
 281         }
 282
 283         tegra_rt5677_dai.cpu_of_node = of_parse_phandle(np,
 284                         "nvidia,i2s-controller", 0);
 285         if (!tegra_rt5677_dai.cpu_of_node) {
 286                 dev_err(&pdev->dev,
 287                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 288                 ret = -EINVAL;
 289                 goto err;
 290         }
 291         tegra_rt5677_dai.platform_of_node = tegra_rt5677_dai.cpu_of_node;
 292
 293         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 294         if (ret)
 295                 goto err;
 296
 297         ret = snd_soc_register_card(card);
 298         if (ret) {
 299                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 300                         ret);
 301                 goto err_fini_utils;
 302         }
 303
 304         return 0;
 305
 306 err_fini_utils:
 307         tegra_asoc_utils_fini(&machine->util_data);
 308 err:
 309         return ret;
 310 }
 311
 312 static int tegra_rt5677_remove(struct platform_device *pdev)
 313 {
 314         struct snd_soc_card *card = platform_get_drvdata(pdev);
 315         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 316
 317         snd_soc_unregister_card(card);
 318
 319         tegra_asoc_utils_fini(&machine->util_data);
 320
 321         return 0;
 322 }
 323
 324 static const struct of_device_id tegra_rt5677_of_match[] = {
 325         { .compatible = "nvidia,tegra-audio-rt5677", },
 326         {},
 327 };
 328
 329 static struct platform_driver tegra_rt5677_driver = {
 330         .driver = {
 331                 .name = DRV_NAME,
 332                 .owner = THIS_MODULE,
 333                 .pm = &snd_soc_pm_ops,
 334                 .of_match_table = tegra_rt5677_of_match,
 335         },
 336         .probe = tegra_rt5677_probe,
 337         .remove = tegra_rt5677_remove,
 338 };
 339 module_platform_driver(tegra_rt5677_driver);
 340
 341 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
 342 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
 343 MODULE_LICENSE("GPL v2");
 344 MODULE_ALIAS("platform:" DRV_NAME);
 345 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);