Version: v4.11.2

linux/sound/soc/tegra/tegra_max98090.c

    1 
    2 
    3 
    4 
    5 
    6 
    7 
    8 
    9 
   10 
   11 
   12 
   13 
   14 
   15 
   16 
   17 
   18 
   19 
   20 
   21 
   22 
   23 
   24 
   25 
   26 
   27 
   28 
   29 
   30 
   31 
   32 
   33 
   34 
   35 
   36 
   37 
   38 
   39 
   40 
   41 
   42 
   43 
   44 
   45 
   46 
   47 
   48 
   49 
   50 
   51 
   52 
   53 
   54 
   55 
   56 
   57 
   58 
   59 
   60 
   61 
   62 
   63 
   64 
   65 
   66 
   67 
   68 
   69 
   70 
   71 
   72 
   73 
   74 
   75 
   76 
   77 
   78 
   79 
   80 
   81 
   82 
   83 
   84 
   85 
   86 
   87 
   88 
   89 
   90 
   91 
   92 
   93 
   94 
   95 
   96 
   97 
   98 
   99 
  100 
  101 
  102 
  103 
  104 
  105 
  106 
  107 
  108 
  109 
  110 
  111 
  112 
  113 
  114 
  115 
  116 
  117 
  118 
  119 
  120 
  121 
  122 
  123 
  124 
  125 
  126 
  127 
  128 
  129 
  130 
  131 
  132 
  133 
  134 
  135 
  136 
  137 
  138 
  139 
  140 
  141 
  142 
  143 
  144 
  145 
  146 
  147 
  148 
  149 
  150 
  151 
  152 
  153 
  154 
  155 
  156 
  157 
  158 
  159 
  160 
  161 
  162 
  163 
  164 
  165 
  166 
  167 
  168 
  169 
  170 
  171 
  172 
  173 
  174 
  175 
  176 
  177 
  178 
  179 
  180 
  181 
  182 
  183 
  184 
  185 
  186 
  187 
  188 
  189 
  190 
  191 
  192 
  193 
  194 
  195 
  196 
  197 
  198 
  199 
  200 
  201 
  202 
  203 
  204 
  205 
  206 
  207 
  208 
  209 
  210 
  211 
  212 
  213 
  214 
  215 
  216 
  217 
  218 
  219 
  220 
  221 
  222 
  223 
  224 
  225 
  226 
  227 
  228 
  229 
  230 
  231 
  232 
  233 
  234 
  235 
  236 
  237 
  238 
  239 
  240 
  241 
  242 
  243 
  244 
  245 
  246 
  247 
  248 
  249 
  250 
  251 
  252 
  253 
  254 
  255 
  256 
  257 
  258 
  259 
  260 
  261 
  262 
  263 
  264 
  265 
  266 
  267 
  268 
  269 
  270 
  271 
  272 
  273 
  274 
  275 
  276 
  277 
  278 
  279 
  280 
  281 
  282 
  283 
  284 
  285 
  286 
  287 
  288 
  289 
  290 
  291 
  292 
  293 
  294 
  295 
  296 
  297 
  298 
  299 
  300 
  301 
  302 
  303 
  304 
  305 
  306 
  307 
  308 
  309 
  310 
  311 
  312 
  313 
  314 
  315 
  316 
  317 
  318 
  319 
  320 
  321 
  322 
  323 
  324 
  325 
/*
 * Tegra machine ASoC driver for boards using a MAX90809 CODEC.
 *
 * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Based on code copyright/by:
 *
 * Copyright (C) 2010-2012 - NVIDIA, Inc.
 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 * Copyright 2007 Wolfson Microelectronics PLC.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>

#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "tegra_asoc_utils.h"

#define DRV_NAME "tegra-snd-max98090"

struct tegra_max98090 {
	struct tegra_asoc_utils_data util_data;
	int gpio_hp_det;
	int gpio_mic_det;
};

static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
					struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_card *card = rtd->card;
	struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
	int srate, mclk;
	int err;

	srate = params_rate(params);
	switch (srate) {
	case 8000:
	case 16000:
	case 24000:
	case 32000:
	case 48000:
	case 64000:
	case 96000:
		mclk = 12288000;
		break;
	case 11025:
	case 22050:
	case 44100:
	case 88200:
		mclk = 11289600;
		break;
	default:
		mclk = 12000000;
		break;
	}

	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	if (err < 0) {
		dev_err(card->dev, "Can't configure clocks\n");
		return err;
	}

	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
					SND_SOC_CLOCK_IN);
	if (err < 0) {
		dev_err(card->dev, "codec_dai clock not set\n");
		return err;
	}

	return 0;
}

static const struct snd_soc_ops tegra_max98090_ops = {
	.hw_params = tegra_max98090_asoc_hw_params,
};

static struct snd_soc_jack tegra_max98090_hp_jack;

static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
	{
		.pin = "Headphones",
		.mask = SND_JACK_HEADPHONE,
	},
};

static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
	.name = "Headphone detection",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 150,
	.invert = 1,
};

static struct snd_soc_jack tegra_max98090_mic_jack;

static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
	{
		.pin = "Mic Jack",
		.mask = SND_JACK_MICROPHONE,
	},
};

static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
	.name = "Mic detection",
	.report = SND_JACK_MICROPHONE,
	.debounce_time = 150,
	.invert = 1,
};

static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphones", NULL),
	SND_SOC_DAPM_SPK("Speakers", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_MIC("Int Mic", NULL),
};

static const struct snd_kcontrol_new tegra_max98090_controls[] = {
	SOC_DAPM_PIN_SWITCH("Headphones"),
	SOC_DAPM_PIN_SWITCH("Speakers"),
	SOC_DAPM_PIN_SWITCH("Mic Jack"),
	SOC_DAPM_PIN_SWITCH("Int Mic"),
};

static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
{
	struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);

	if (gpio_is_valid(machine->gpio_hp_det)) {
		snd_soc_card_jack_new(rtd->card, "Headphones",
				      SND_JACK_HEADPHONE,
				      &tegra_max98090_hp_jack,
				      tegra_max98090_hp_jack_pins,
				      ARRAY_SIZE(tegra_max98090_hp_jack_pins));

		tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
		snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
					1,
					&tegra_max98090_hp_jack_gpio);
	}

	if (gpio_is_valid(machine->gpio_mic_det)) {
		snd_soc_card_jack_new(rtd->card, "Mic Jack",
				      SND_JACK_MICROPHONE,
				      &tegra_max98090_mic_jack,
				      tegra_max98090_mic_jack_pins,
				      ARRAY_SIZE(tegra_max98090_mic_jack_pins));

		tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
		snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
				       1,
				       &tegra_max98090_mic_jack_gpio);
	}

	return 0;
}

static int tegra_max98090_card_remove(struct snd_soc_card *card)
{
	struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);

	if (gpio_is_valid(machine->gpio_hp_det)) {
		snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
					&tegra_max98090_hp_jack_gpio);
	}

	if (gpio_is_valid(machine->gpio_mic_det)) {
		snd_soc_jack_free_gpios(&tegra_max98090_mic_jack, 1,
					&tegra_max98090_mic_jack_gpio);
	}

	return 0;
}

static struct snd_soc_dai_link tegra_max98090_dai = {
	.name = "max98090",
	.stream_name = "max98090 PCM",
	.codec_dai_name = "HiFi",
	.init = tegra_max98090_asoc_init,
	.ops = &tegra_max98090_ops,
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBS_CFS,
};

static struct snd_soc_card snd_soc_tegra_max98090 = {
	.name = "tegra-max98090",
	.owner = THIS_MODULE,
	.remove = tegra_max98090_card_remove,
	.dai_link = &tegra_max98090_dai,
	.num_links = 1,
	.controls = tegra_max98090_controls,
	.num_controls = ARRAY_SIZE(tegra_max98090_controls),
	.dapm_widgets = tegra_max98090_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
	.fully_routed = true,
};

static int tegra_max98090_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &snd_soc_tegra_max98090;
	struct tegra_max98090 *machine;
	int ret;

	machine = devm_kzalloc(&pdev->dev,
			sizeof(struct tegra_max98090), GFP_KERNEL);
	if (!machine) {
		dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
		return -ENOMEM;
	}

	card->dev = &pdev->dev;
	platform_set_drvdata(pdev, card);
	snd_soc_card_set_drvdata(card, machine);

	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
	if (machine->gpio_hp_det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	machine->gpio_mic_det =
			of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
	if (machine->gpio_mic_det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	if (ret)
		goto err;

	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	if (ret)
		goto err;

	tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
			"nvidia,audio-codec", 0);
	if (!tegra_max98090_dai.codec_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,audio-codec' missing or invalid\n");
		ret = -EINVAL;
		goto err;
	}

	tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
			"nvidia,i2s-controller", 0);
	if (!tegra_max98090_dai.cpu_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,i2s-controller' missing or invalid\n");
		ret = -EINVAL;
		goto err;
	}

	tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;

	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	if (ret)
		goto err;

	ret = snd_soc_register_card(card);
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
			ret);
		goto err_fini_utils;
	}

	return 0;

err_fini_utils:
	tegra_asoc_utils_fini(&machine->util_data);
err:
	return ret;
}

static int tegra_max98090_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);

	snd_soc_unregister_card(card);

	tegra_asoc_utils_fini(&machine->util_data);

	return 0;
}

static const struct of_device_id tegra_max98090_of_match[] = {
	{ .compatible = "nvidia,tegra-audio-max98090", },
	{},
};

static struct platform_driver tegra_max98090_driver = {
	.driver = {
		.name = DRV_NAME,
		.pm = &snd_soc_pm_ops,
		.of_match_table = tegra_max98090_of_match,
	},
	.probe = tegra_max98090_probe,
	.remove = tegra_max98090_remove,
};
module_platform_driver(tegra_max98090_driver);

MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);

This page was automatically generated by Elixir 0.1.2 (source)  •  Please report bugs by mail or directly through the issue tracker.