251 lines
6.6 KiB
C
Executable file
251 lines
6.6 KiB
C
Executable file
/*
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* tegra_rt5640.c - Tegra machine ASoC driver for boards using RT5640 codec.
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*
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* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Based on code copyright/by:
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*
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* Copyright (C) 2010-2012 - NVIDIA, Inc.
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* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
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* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
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* Copyright 2007 Wolfson Microelectronics PLC.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "../codecs/rt5640.h"
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#include "tegra_asoc_utils.h"
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#define DRV_NAME "tegra-snd-rt5640"
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struct tegra_rt5640 {
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struct tegra_asoc_utils_data util_data;
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int gpio_hp_det;
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enum of_gpio_flags gpio_hp_det_flags;
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};
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static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_card *card = rtd->card;
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struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
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int srate, mclk;
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int err;
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srate = params_rate(params);
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mclk = 256 * srate;
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err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
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if (err < 0) {
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dev_err(card->dev, "Can't configure clocks\n");
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return err;
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}
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err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
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SND_SOC_CLOCK_IN);
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if (err < 0) {
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dev_err(card->dev, "codec_dai clock not set\n");
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return err;
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}
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return 0;
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}
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static const struct snd_soc_ops tegra_rt5640_ops = {
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.hw_params = tegra_rt5640_asoc_hw_params,
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};
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static struct snd_soc_jack tegra_rt5640_hp_jack;
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static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
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{
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.pin = "Headphones",
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.mask = SND_JACK_HEADPHONE,
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},
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};
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static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
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.name = "Headphone detection",
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.report = SND_JACK_HEADPHONE,
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.debounce_time = 150,
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.invert = 1,
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};
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static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphones", NULL),
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SND_SOC_DAPM_SPK("Speakers", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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};
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static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
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SOC_DAPM_PIN_SWITCH("Speakers"),
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};
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static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
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snd_soc_card_jack_new(rtd->card, "Headphones", SND_JACK_HEADPHONE,
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&tegra_rt5640_hp_jack, tegra_rt5640_hp_jack_pins,
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ARRAY_SIZE(tegra_rt5640_hp_jack_pins));
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if (gpio_is_valid(machine->gpio_hp_det)) {
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tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
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tegra_rt5640_hp_jack_gpio.invert =
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!!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
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snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
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1,
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&tegra_rt5640_hp_jack_gpio);
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}
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return 0;
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}
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static struct snd_soc_dai_link tegra_rt5640_dai = {
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.name = "RT5640",
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.stream_name = "RT5640 PCM",
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.codec_dai_name = "rt5640-aif1",
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.init = tegra_rt5640_asoc_init,
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.ops = &tegra_rt5640_ops,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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};
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static struct snd_soc_card snd_soc_tegra_rt5640 = {
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.name = "tegra-rt5640",
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.owner = THIS_MODULE,
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.dai_link = &tegra_rt5640_dai,
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.num_links = 1,
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.controls = tegra_rt5640_controls,
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.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
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.dapm_widgets = tegra_rt5640_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
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.fully_routed = true,
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};
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static int tegra_rt5640_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_card *card = &snd_soc_tegra_rt5640;
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struct tegra_rt5640 *machine;
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int ret;
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machine = devm_kzalloc(&pdev->dev,
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sizeof(struct tegra_rt5640), GFP_KERNEL);
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if (!machine)
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return -ENOMEM;
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card->dev = &pdev->dev;
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snd_soc_card_set_drvdata(card, machine);
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machine->gpio_hp_det = of_get_named_gpio_flags(
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np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
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if (machine->gpio_hp_det == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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ret = snd_soc_of_parse_card_name(card, "nvidia,model");
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if (ret)
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goto err;
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ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
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if (ret)
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goto err;
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tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
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"nvidia,audio-codec", 0);
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if (!tegra_rt5640_dai.codec_of_node) {
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dev_err(&pdev->dev,
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"Property 'nvidia,audio-codec' missing or invalid\n");
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ret = -EINVAL;
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goto err;
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}
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tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
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"nvidia,i2s-controller", 0);
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if (!tegra_rt5640_dai.cpu_of_node) {
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dev_err(&pdev->dev,
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"Property 'nvidia,i2s-controller' missing or invalid\n");
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ret = -EINVAL;
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goto err;
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}
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tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
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ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
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if (ret)
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goto err;
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
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ret);
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goto err_fini_utils;
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}
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return 0;
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err_fini_utils:
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tegra_asoc_utils_fini(&machine->util_data);
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err:
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return ret;
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}
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static int tegra_rt5640_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
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snd_soc_unregister_card(card);
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tegra_asoc_utils_fini(&machine->util_data);
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return 0;
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}
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static const struct of_device_id tegra_rt5640_of_match[] = {
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{ .compatible = "nvidia,tegra-audio-rt5640", },
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{},
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};
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static struct platform_driver tegra_rt5640_driver = {
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.driver = {
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.name = DRV_NAME,
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.pm = &snd_soc_pm_ops,
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.of_match_table = tegra_rt5640_of_match,
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},
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.probe = tegra_rt5640_probe,
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.remove = tegra_rt5640_remove,
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};
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module_platform_driver(tegra_rt5640_driver);
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MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
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MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:" DRV_NAME);
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MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
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