sound/soc/tegra/tegra_rt5677.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3 * tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
   4  *
   5  * Copyright (c) 2014, The Chromium OS Authors.  All rights reserved.
   6  *
   7  * Based on code copyright/by:
   8  *
   9  * Copyright (C) 2010-2012 - NVIDIA, Inc.
  10  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  11  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  12  * Copyright 2007 Wolfson Microelectronics PLC.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/slab.h>
  18 #include <linux/gpio.h>
  19 #include <linux/of_gpio.h>
  20
  21 #include <sound/core.h>
  22 #include <sound/jack.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26
  27 #include "../codecs/rt5677.h"
  28
  29 #include "tegra_asoc_utils.h"
  30
  31 #define DRV_NAME "tegra-snd-rt5677"
  32
  33 struct tegra_rt5677 {
  34         struct tegra_asoc_utils_data util_data;
  35         int gpio_hp_det;
  36         int gpio_hp_en;
  37         int gpio_mic_present;
  38         int gpio_dmic_clk_en;
  39 };
  40
  41 static int tegra_rt5677_asoc_hw_params(struct snd_pcm_substream *substream,
  42                                         struct snd_pcm_hw_params *params)
  43 {
  44         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  45         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  46         struct snd_soc_card *card = rtd->card;
  47         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
  48         int srate, mclk, err;
  49
  50         srate = params_rate(params);
  51         mclk = 256 * srate;
  52
  53         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  54         if (err < 0) {
  55                 dev_err(card->dev, "Can't configure clocks\n");
  56                 return err;
  57         }
  58
  59         err = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, mclk,
  60                                         SND_SOC_CLOCK_IN);
  61         if (err < 0) {
  62                 dev_err(card->dev, "codec_dai clock not set\n");
  63                 return err;
  64         }
  65
  66         return 0;
  67 }
  68
  69 static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
  70                         struct snd_kcontrol *k, int event)
  71 {
  72         struct snd_soc_dapm_context *dapm = w->dapm;
  73         struct snd_soc_card *card = dapm->card;
  74         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
  75
  76         if (!gpio_is_valid(machine->gpio_hp_en))
  77                 return 0;
  78
  79         gpio_set_value_cansleep(machine->gpio_hp_en,
  80                 SND_SOC_DAPM_EVENT_ON(event));
  81
  82         return 0;
  83 }
  84
  85 static const struct snd_soc_ops tegra_rt5677_ops = {
  86         .hw_params = tegra_rt5677_asoc_hw_params,
  87 };
  88
  89 static struct snd_soc_jack tegra_rt5677_hp_jack;
  90
  91 static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
  92         .pin = "Headphone",
  93         .mask = SND_JACK_HEADPHONE,
  94 };
  95 static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
  96         .name = "Headphone detection",
  97         .report = SND_JACK_HEADPHONE,
  98         .debounce_time = 150,
  99 };
 100
 101 static struct snd_soc_jack tegra_rt5677_mic_jack;
 102
 103 static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
 104         .pin = "Headset Mic",
 105         .mask = SND_JACK_MICROPHONE,
 106 };
 107
 108 static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
 109         .name = "Headset Mic detection",
 110         .report = SND_JACK_MICROPHONE,
 111         .debounce_time = 150,
 112         .invert = 1
 113 };
 114
 115 static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
 116         SND_SOC_DAPM_SPK("Speaker", NULL),
 117         SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
 118         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 119         SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
 120         SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
 121 };
 122
 123 static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
 124         SOC_DAPM_PIN_SWITCH("Speaker"),
 125         SOC_DAPM_PIN_SWITCH("Headphone"),
 126         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 127         SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
 128         SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
 129 };
 130
 131 static int tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime *rtd)
 132 {
 133         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
 134
 135         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 136                               &tegra_rt5677_hp_jack,
 137                               &tegra_rt5677_hp_jack_pins, 1);
 138
 139         if (gpio_is_valid(machine->gpio_hp_det)) {
 140                 tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
 141                 snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
 142                                 &tegra_rt5677_hp_jack_gpio);
 143         }
 144
 145
 146         snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
 147                               &tegra_rt5677_mic_jack,
 148                               &tegra_rt5677_mic_jack_pins, 1);
 149
 150         if (gpio_is_valid(machine->gpio_mic_present)) {
 151                 tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
 152                 snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
 153                                 &tegra_rt5677_mic_jack_gpio);
 154         }
 155
 156         snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
 157
 158         return 0;
 159 }
 160
 161 SND_SOC_DAILINK_DEFS(pcm,
 162         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 163         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5677-aif1")),
 164         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 165
 166 static struct snd_soc_dai_link tegra_rt5677_dai = {
 167         .name = "RT5677",
 168         .stream_name = "RT5677 PCM",
 169         .init = tegra_rt5677_asoc_init,
 170         .ops = &tegra_rt5677_ops,
 171         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 172                         SND_SOC_DAIFMT_CBS_CFS,
 173         SND_SOC_DAILINK_REG(pcm),
 174 };
 175
 176 static struct snd_soc_card snd_soc_tegra_rt5677 = {
 177         .name = "tegra-rt5677",
 178         .owner = THIS_MODULE,
 179         .dai_link = &tegra_rt5677_dai,
 180         .num_links = 1,
 181         .controls = tegra_rt5677_controls,
 182         .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
 183         .dapm_widgets = tegra_rt5677_dapm_widgets,
 184         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
 185         .fully_routed = true,
 186 };
 187
 188 static int tegra_rt5677_probe(struct platform_device *pdev)
 189 {
 190         struct device_node *np = pdev->dev.of_node;
 191         struct snd_soc_card *card = &snd_soc_tegra_rt5677;
 192         struct tegra_rt5677 *machine;
 193         int ret;
 194
 195         machine = devm_kzalloc(&pdev->dev,
 196                         sizeof(struct tegra_rt5677), GFP_KERNEL);
 197         if (!machine)
 198                 return -ENOMEM;
 199
 200         card->dev = &pdev->dev;
 201         snd_soc_card_set_drvdata(card, machine);
 202
 203         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 204         if (machine->gpio_hp_det == -EPROBE_DEFER)
 205                 return -EPROBE_DEFER;
 206
 207         machine->gpio_mic_present = of_get_named_gpio(np,
 208                         "nvidia,mic-present-gpios", 0);
 209         if (machine->gpio_mic_present == -EPROBE_DEFER)
 210                 return -EPROBE_DEFER;
 211
 212         machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
 213         if (machine->gpio_hp_en == -EPROBE_DEFER)
 214                 return -EPROBE_DEFER;
 215         if (gpio_is_valid(machine->gpio_hp_en)) {
 216                 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
 217                                 GPIOF_OUT_INIT_LOW, "hp_en");
 218                 if (ret) {
 219                         dev_err(card->dev, "cannot get hp_en gpio\n");
 220                         return ret;
 221                 }
 222         }
 223
 224         machine->gpio_dmic_clk_en = of_get_named_gpio(np,
 225                 "nvidia,dmic-clk-en-gpios", 0);
 226         if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
 227                 return -EPROBE_DEFER;
 228         if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
 229                 ret = devm_gpio_request_one(&pdev->dev,
 230                                 machine->gpio_dmic_clk_en,
 231                                 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
 232                 if (ret) {
 233                         dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
 234                         return ret;
 235                 }
 236         }
 237
 238         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 239         if (ret)
 240                 goto err;
 241
 242         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 243         if (ret)
 244                 goto err;
 245
 246         tegra_rt5677_dai.codecs->of_node = of_parse_phandle(np,
 247                         "nvidia,audio-codec", 0);
 248         if (!tegra_rt5677_dai.codecs->of_node) {
 249                 dev_err(&pdev->dev,
 250                         "Property 'nvidia,audio-codec' missing or invalid\n");
 251                 ret = -EINVAL;
 252                 goto err;
 253         }
 254
 255         tegra_rt5677_dai.cpus->of_node = of_parse_phandle(np,
 256                         "nvidia,i2s-controller", 0);
 257         if (!tegra_rt5677_dai.cpus->of_node) {
 258                 dev_err(&pdev->dev,
 259                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 260                 ret = -EINVAL;
 261                 goto err_put_codec_of_node;
 262         }
 263         tegra_rt5677_dai.platforms->of_node = tegra_rt5677_dai.cpus->of_node;
 264
 265         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 266         if (ret)
 267                 goto err_put_cpu_of_node;
 268
 269         ret = snd_soc_register_card(card);
 270         if (ret) {
 271                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 272                         ret);
 273                 goto err_fini_utils;
 274         }
 275
 276         return 0;
 277
 278 err_fini_utils:
 279         tegra_asoc_utils_fini(&machine->util_data);
 280 err_put_cpu_of_node:
 281         of_node_put(tegra_rt5677_dai.cpus->of_node);
 282         tegra_rt5677_dai.cpus->of_node = NULL;
 283         tegra_rt5677_dai.platforms->of_node = NULL;
 284 err_put_codec_of_node:
 285         of_node_put(tegra_rt5677_dai.codecs->of_node);
 286         tegra_rt5677_dai.codecs->of_node = NULL;
 287 err:
 288         return ret;
 289 }
 290
 291 static int tegra_rt5677_remove(struct platform_device *pdev)
 292 {
 293         struct snd_soc_card *card = platform_get_drvdata(pdev);
 294         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 295
 296         snd_soc_unregister_card(card);
 297
 298         tegra_asoc_utils_fini(&machine->util_data);
 299
 300         tegra_rt5677_dai.platforms->of_node = NULL;
 301         of_node_put(tegra_rt5677_dai.codecs->of_node);
 302         tegra_rt5677_dai.codecs->of_node = NULL;
 303         of_node_put(tegra_rt5677_dai.cpus->of_node);
 304         tegra_rt5677_dai.cpus->of_node = NULL;
 305
 306         return 0;
 307 }
 308
 309 static const struct of_device_id tegra_rt5677_of_match[] = {
 310         { .compatible = "nvidia,tegra-audio-rt5677", },
 311         {},
 312 };
 313
 314 static struct platform_driver tegra_rt5677_driver = {
 315         .driver = {
 316                 .name = DRV_NAME,
 317                 .pm = &snd_soc_pm_ops,
 318                 .of_match_table = tegra_rt5677_of_match,
 319         },
 320         .probe = tegra_rt5677_probe,
 321         .remove = tegra_rt5677_remove,
 322 };
 323 module_platform_driver(tegra_rt5677_driver);
 324
 325 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
 326 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
 327 MODULE_LICENSE("GPL v2");
 328 MODULE_ALIAS("platform:" DRV_NAME);
 329 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);