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 const 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 tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
 145
 146         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 147                               &tegra_rt5677_hp_jack,
 148                               &tegra_rt5677_hp_jack_pins, 1);
 149
 150         if (gpio_is_valid(machine->gpio_hp_det)) {
 151                 tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
 152                 snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
 153                                 &tegra_rt5677_hp_jack_gpio);
 154         }
 155
 156
 157         snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
 158                               &tegra_rt5677_mic_jack,
 159                               &tegra_rt5677_mic_jack_pins, 1);
 160
 161         if (gpio_is_valid(machine->gpio_mic_present)) {
 162                 tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
 163                 snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
 164                                 &tegra_rt5677_mic_jack_gpio);
 165         }
 166
 167         snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
 168
 169         return 0;
 170 }
 171
 172 static int tegra_rt5677_card_remove(struct snd_soc_card *card)
 173 {
 174         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 175
 176         if (gpio_is_valid(machine->gpio_hp_det)) {
 177                 snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1,
 178                                 &tegra_rt5677_hp_jack_gpio);
 179         }
 180
 181         if (gpio_is_valid(machine->gpio_mic_present)) {
 182                 snd_soc_jack_free_gpios(&tegra_rt5677_mic_jack, 1,
 183                                 &tegra_rt5677_mic_jack_gpio);
 184         }
 185
 186         return 0;
 187 }
 188
 189 static struct snd_soc_dai_link tegra_rt5677_dai = {
 190         .name = "RT5677",
 191         .stream_name = "RT5677 PCM",
 192         .codec_dai_name = "rt5677-aif1",
 193         .init = tegra_rt5677_asoc_init,
 194         .ops = &tegra_rt5677_ops,
 195         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 196                         SND_SOC_DAIFMT_CBS_CFS,
 197 };
 198
 199 static struct snd_soc_card snd_soc_tegra_rt5677 = {
 200         .name = "tegra-rt5677",
 201         .owner = THIS_MODULE,
 202         .remove = tegra_rt5677_card_remove,
 203         .dai_link = &tegra_rt5677_dai,
 204         .num_links = 1,
 205         .controls = tegra_rt5677_controls,
 206         .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
 207         .dapm_widgets = tegra_rt5677_dapm_widgets,
 208         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
 209         .fully_routed = true,
 210 };
 211
 212 static int tegra_rt5677_probe(struct platform_device *pdev)
 213 {
 214         struct device_node *np = pdev->dev.of_node;
 215         struct snd_soc_card *card = &snd_soc_tegra_rt5677;
 216         struct tegra_rt5677 *machine;
 217         int ret;
 218
 219         machine = devm_kzalloc(&pdev->dev,
 220                         sizeof(struct tegra_rt5677), GFP_KERNEL);
 221         if (!machine)
 222                 return -ENOMEM;
 223
 224         card->dev = &pdev->dev;
 225         platform_set_drvdata(pdev, card);
 226         snd_soc_card_set_drvdata(card, machine);
 227
 228         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 229         if (machine->gpio_hp_det == -EPROBE_DEFER)
 230                 return -EPROBE_DEFER;
 231
 232         machine->gpio_mic_present = of_get_named_gpio(np,
 233                         "nvidia,mic-present-gpios", 0);
 234         if (machine->gpio_mic_present == -EPROBE_DEFER)
 235                 return -EPROBE_DEFER;
 236
 237         machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
 238         if (machine->gpio_hp_en == -EPROBE_DEFER)
 239                 return -EPROBE_DEFER;
 240         if (gpio_is_valid(machine->gpio_hp_en)) {
 241                 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
 242                                 GPIOF_OUT_INIT_LOW, "hp_en");
 243                 if (ret) {
 244                         dev_err(card->dev, "cannot get hp_en gpio\n");
 245                         return ret;
 246                 }
 247         }
 248
 249         machine->gpio_dmic_clk_en = of_get_named_gpio(np,
 250                 "nvidia,dmic-clk-en-gpios", 0);
 251         if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
 252                 return -EPROBE_DEFER;
 253         if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
 254                 ret = devm_gpio_request_one(&pdev->dev,
 255                                 machine->gpio_dmic_clk_en,
 256                                 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
 257                 if (ret) {
 258                         dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
 259                         return ret;
 260                 }
 261         }
 262
 263         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 264         if (ret)
 265                 goto err;
 266
 267         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 268         if (ret)
 269                 goto err;
 270
 271         tegra_rt5677_dai.codec_of_node = of_parse_phandle(np,
 272                         "nvidia,audio-codec", 0);
 273         if (!tegra_rt5677_dai.codec_of_node) {
 274                 dev_err(&pdev->dev,
 275                         "Property 'nvidia,audio-codec' missing or invalid\n");
 276                 ret = -EINVAL;
 277                 goto err;
 278         }
 279
 280         tegra_rt5677_dai.cpu_of_node = of_parse_phandle(np,
 281                         "nvidia,i2s-controller", 0);
 282         if (!tegra_rt5677_dai.cpu_of_node) {
 283                 dev_err(&pdev->dev,
 284                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 285                 ret = -EINVAL;
 286                 goto err;
 287         }
 288         tegra_rt5677_dai.platform_of_node = tegra_rt5677_dai.cpu_of_node;
 289
 290         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 291         if (ret)
 292                 goto err;
 293
 294         ret = snd_soc_register_card(card);
 295         if (ret) {
 296                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 297                         ret);
 298                 goto err_fini_utils;
 299         }
 300
 301         return 0;
 302
 303 err_fini_utils:
 304         tegra_asoc_utils_fini(&machine->util_data);
 305 err:
 306         return ret;
 307 }
 308
 309 static int tegra_rt5677_remove(struct platform_device *pdev)
 310 {
 311         struct snd_soc_card *card = platform_get_drvdata(pdev);
 312         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 313
 314         snd_soc_unregister_card(card);
 315
 316         tegra_asoc_utils_fini(&machine->util_data);
 317
 318         return 0;
 319 }
 320
 321 static const struct of_device_id tegra_rt5677_of_match[] = {
 322         { .compatible = "nvidia,tegra-audio-rt5677", },
 323         {},
 324 };
 325
 326 static struct platform_driver tegra_rt5677_driver = {
 327         .driver = {
 328                 .name = DRV_NAME,
 329                 .pm = &snd_soc_pm_ops,
 330                 .of_match_table = tegra_rt5677_of_match,
 331         },
 332         .probe = tegra_rt5677_probe,
 333         .remove = tegra_rt5677_remove,
 334 };
 335 module_platform_driver(tegra_rt5677_driver);
 336
 337 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
 338 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
 339 MODULE_LICENSE("GPL v2");
 340 MODULE_ALIAS("platform:" DRV_NAME);
 341 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);