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_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
 150                         &tegra_rt5677_hp_jack);
 151         snd_soc_jack_add_pins(&tegra_rt5677_hp_jack, 1,
 152                         &tegra_rt5677_hp_jack_pins);
 153
 154         if (gpio_is_valid(machine->gpio_hp_det)) {
 155                 tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
 156                 snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
 157                                 &tegra_rt5677_hp_jack_gpio);
 158         }
 159
 160
 161         snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
 162                         &tegra_rt5677_mic_jack);
 163         snd_soc_jack_add_pins(&tegra_rt5677_mic_jack, 1,
 164                         &tegra_rt5677_mic_jack_pins);
 165
 166         if (gpio_is_valid(machine->gpio_mic_present)) {
 167                 tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
 168                 snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
 169                                 &tegra_rt5677_mic_jack_gpio);
 170         }
 171
 172         snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
 173
 174         return 0;
 175 }
 176
 177 static int tegra_rt5677_card_remove(struct snd_soc_card *card)
 178 {
 179         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 180
 181         if (gpio_is_valid(machine->gpio_hp_det)) {
 182                 snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1,
 183                                 &tegra_rt5677_hp_jack_gpio);
 184         }
 185
 186         if (gpio_is_valid(machine->gpio_mic_present)) {
 187                 snd_soc_jack_free_gpios(&tegra_rt5677_mic_jack, 1,
 188                                 &tegra_rt5677_mic_jack_gpio);
 189         }
 190
 191         return 0;
 192 }
 193
 194 static struct snd_soc_dai_link tegra_rt5677_dai = {
 195         .name = "RT5677",
 196         .stream_name = "RT5677 PCM",
 197         .codec_dai_name = "rt5677-aif1",
 198         .init = tegra_rt5677_asoc_init,
 199         .ops = &tegra_rt5677_ops,
 200         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 201                         SND_SOC_DAIFMT_CBS_CFS,
 202 };
 203
 204 static struct snd_soc_card snd_soc_tegra_rt5677 = {
 205         .name = "tegra-rt5677",
 206         .owner = THIS_MODULE,
 207         .remove = tegra_rt5677_card_remove,
 208         .dai_link = &tegra_rt5677_dai,
 209         .num_links = 1,
 210         .controls = tegra_rt5677_controls,
 211         .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
 212         .dapm_widgets = tegra_rt5677_dapm_widgets,
 213         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
 214         .fully_routed = true,
 215 };
 216
 217 static int tegra_rt5677_probe(struct platform_device *pdev)
 218 {
 219         struct device_node *np = pdev->dev.of_node;
 220         struct snd_soc_card *card = &snd_soc_tegra_rt5677;
 221         struct tegra_rt5677 *machine;
 222         int ret;
 223
 224         machine = devm_kzalloc(&pdev->dev,
 225                         sizeof(struct tegra_rt5677), GFP_KERNEL);
 226         if (!machine)
 227                 return -ENOMEM;
 228
 229         card->dev = &pdev->dev;
 230         platform_set_drvdata(pdev, card);
 231         snd_soc_card_set_drvdata(card, machine);
 232
 233         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 234         if (machine->gpio_hp_det == -EPROBE_DEFER)
 235                 return -EPROBE_DEFER;
 236
 237         machine->gpio_mic_present = of_get_named_gpio(np,
 238                         "nvidia,mic-present-gpios", 0);
 239         if (machine->gpio_mic_present == -EPROBE_DEFER)
 240                 return -EPROBE_DEFER;
 241
 242         machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
 243         if (machine->gpio_hp_en == -EPROBE_DEFER)
 244                 return -EPROBE_DEFER;
 245         if (gpio_is_valid(machine->gpio_hp_en)) {
 246                 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
 247                                 GPIOF_OUT_INIT_LOW, "hp_en");
 248                 if (ret) {
 249                         dev_err(card->dev, "cannot get hp_en gpio\n");
 250                         return ret;
 251                 }
 252         }
 253
 254         machine->gpio_dmic_clk_en = of_get_named_gpio(np,
 255                 "nvidia,dmic-clk-en-gpios", 0);
 256         if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
 257                 return -EPROBE_DEFER;
 258         if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
 259                 ret = devm_gpio_request_one(&pdev->dev,
 260                                 machine->gpio_dmic_clk_en,
 261                                 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
 262                 if (ret) {
 263                         dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
 264                         return ret;
 265                 }
 266         }
 267
 268         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 269         if (ret)
 270                 goto err;
 271
 272         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 273         if (ret)
 274                 goto err;
 275
 276         tegra_rt5677_dai.codec_of_node = of_parse_phandle(np,
 277                         "nvidia,audio-codec", 0);
 278         if (!tegra_rt5677_dai.codec_of_node) {
 279                 dev_err(&pdev->dev,
 280                         "Property 'nvidia,audio-codec' missing or invalid\n");
 281                 ret = -EINVAL;
 282                 goto err;
 283         }
 284
 285         tegra_rt5677_dai.cpu_of_node = of_parse_phandle(np,
 286                         "nvidia,i2s-controller", 0);
 287         if (!tegra_rt5677_dai.cpu_of_node) {
 288                 dev_err(&pdev->dev,
 289                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 290                 ret = -EINVAL;
 291                 goto err;
 292         }
 293         tegra_rt5677_dai.platform_of_node = tegra_rt5677_dai.cpu_of_node;
 294
 295         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 296         if (ret)
 297                 goto err;
 298
 299         ret = snd_soc_register_card(card);
 300         if (ret) {
 301                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 302                         ret);
 303                 goto err_fini_utils;
 304         }
 305
 306         return 0;
 307
 308 err_fini_utils:
 309         tegra_asoc_utils_fini(&machine->util_data);
 310 err:
 311         return ret;
 312 }
 313
 314 static int tegra_rt5677_remove(struct platform_device *pdev)
 315 {
 316         struct snd_soc_card *card = platform_get_drvdata(pdev);
 317         struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
 318
 319         snd_soc_unregister_card(card);
 320
 321         tegra_asoc_utils_fini(&machine->util_data);
 322
 323         return 0;
 324 }
 325
 326 static const struct of_device_id tegra_rt5677_of_match[] = {
 327         { .compatible = "nvidia,tegra-audio-rt5677", },
 328         {},
 329 };
 330
 331 static struct platform_driver tegra_rt5677_driver = {
 332         .driver = {
 333                 .name = DRV_NAME,
 334                 .owner = THIS_MODULE,
 335                 .pm = &snd_soc_pm_ops,
 336                 .of_match_table = tegra_rt5677_of_match,
 337         },
 338         .probe = tegra_rt5677_probe,
 339         .remove = tegra_rt5677_remove,
 340 };
 341 module_platform_driver(tegra_rt5677_driver);
 342
 343 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
 344 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
 345 MODULE_LICENSE("GPL v2");
 346 MODULE_ALIAS("platform:" DRV_NAME);
 347 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);