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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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348 lines
9.4 KiB
C
348 lines
9.4 KiB
C
![]() |
/*
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* tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
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*
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* Copyright (c) 2014, The Chromium OS Authors. 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/rt5677.h"
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#include "tegra_asoc_utils.h"
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#define DRV_NAME "tegra-snd-rt5677"
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struct tegra_rt5677 {
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struct tegra_asoc_utils_data util_data;
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int gpio_hp_det;
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int gpio_hp_en;
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int gpio_mic_present;
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int gpio_dmic_clk_en;
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};
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static int tegra_rt5677_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_rt5677 *machine = snd_soc_card_get_drvdata(card);
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int srate, mclk, 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, RT5677_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 int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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{
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struct snd_soc_dapm_context *dapm = w->dapm;
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struct snd_soc_card *card = dapm->card;
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struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
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if (!gpio_is_valid(machine->gpio_hp_en))
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return 0;
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gpio_set_value_cansleep(machine->gpio_hp_en,
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SND_SOC_DAPM_EVENT_ON(event));
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return 0;
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}
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static struct snd_soc_ops tegra_rt5677_ops = {
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.hw_params = tegra_rt5677_asoc_hw_params,
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};
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static struct snd_soc_jack tegra_rt5677_hp_jack;
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static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
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.pin = "Headphone",
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.mask = SND_JACK_HEADPHONE,
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};
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static struct snd_soc_jack_gpio tegra_rt5677_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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};
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static struct snd_soc_jack tegra_rt5677_mic_jack;
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static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
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.pin = "Headset Mic",
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.mask = SND_JACK_MICROPHONE,
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};
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static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
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.name = "Headset Mic detection",
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.report = SND_JACK_MICROPHONE,
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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_rt5677_dapm_widgets[] = {
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SND_SOC_DAPM_SPK("Speaker", NULL),
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SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
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SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
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};
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static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
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SOC_DAPM_PIN_SWITCH("Speaker"),
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SOC_DAPM_PIN_SWITCH("Headphone"),
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SOC_DAPM_PIN_SWITCH("Headset Mic"),
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SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
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SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
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};
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static int tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_codec *codec = codec_dai->codec;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
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snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
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&tegra_rt5677_hp_jack);
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snd_soc_jack_add_pins(&tegra_rt5677_hp_jack, 1,
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&tegra_rt5677_hp_jack_pins);
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if (gpio_is_valid(machine->gpio_hp_det)) {
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tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
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snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
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&tegra_rt5677_hp_jack_gpio);
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}
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snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
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&tegra_rt5677_mic_jack);
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snd_soc_jack_add_pins(&tegra_rt5677_mic_jack, 1,
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&tegra_rt5677_mic_jack_pins);
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if (gpio_is_valid(machine->gpio_mic_present)) {
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tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
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snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
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&tegra_rt5677_mic_jack_gpio);
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}
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snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
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return 0;
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}
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static int tegra_rt5677_card_remove(struct snd_soc_card *card)
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{
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struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
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if (gpio_is_valid(machine->gpio_hp_det)) {
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snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1,
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&tegra_rt5677_hp_jack_gpio);
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}
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if (gpio_is_valid(machine->gpio_mic_present)) {
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snd_soc_jack_free_gpios(&tegra_rt5677_mic_jack, 1,
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&tegra_rt5677_mic_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_rt5677_dai = {
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.name = "RT5677",
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.stream_name = "RT5677 PCM",
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.codec_dai_name = "rt5677-aif1",
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.init = tegra_rt5677_asoc_init,
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.ops = &tegra_rt5677_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_rt5677 = {
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.name = "tegra-rt5677",
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.owner = THIS_MODULE,
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.remove = tegra_rt5677_card_remove,
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.dai_link = &tegra_rt5677_dai,
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.num_links = 1,
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.controls = tegra_rt5677_controls,
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.num_controls = ARRAY_SIZE(tegra_rt5677_controls),
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.dapm_widgets = tegra_rt5677_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
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.fully_routed = true,
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};
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static int tegra_rt5677_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_rt5677;
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struct tegra_rt5677 *machine;
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int ret;
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machine = devm_kzalloc(&pdev->dev,
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sizeof(struct tegra_rt5677), 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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platform_set_drvdata(pdev, card);
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snd_soc_card_set_drvdata(card, machine);
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machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
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if (machine->gpio_hp_det == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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machine->gpio_mic_present = of_get_named_gpio(np,
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"nvidia,mic-present-gpios", 0);
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if (machine->gpio_mic_present == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
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if (machine->gpio_hp_en == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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if (gpio_is_valid(machine->gpio_hp_en)) {
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ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
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GPIOF_OUT_INIT_LOW, "hp_en");
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if (ret) {
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dev_err(card->dev, "cannot get hp_en gpio\n");
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return ret;
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}
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}
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machine->gpio_dmic_clk_en = of_get_named_gpio(np,
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"nvidia,dmic-clk-en-gpios", 0);
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if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
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ret = devm_gpio_request_one(&pdev->dev,
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machine->gpio_dmic_clk_en,
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GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
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if (ret) {
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dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
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return ret;
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}
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}
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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_rt5677_dai.codec_of_node = of_parse_phandle(np,
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"nvidia,audio-codec", 0);
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if (!tegra_rt5677_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_rt5677_dai.cpu_of_node = of_parse_phandle(np,
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"nvidia,i2s-controller", 0);
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if (!tegra_rt5677_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_rt5677_dai.platform_of_node = tegra_rt5677_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_rt5677_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_rt5677 *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_rt5677_of_match[] = {
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{ .compatible = "nvidia,tegra-audio-rt5677", },
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{},
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};
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static struct platform_driver tegra_rt5677_driver = {
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.driver = {
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.name = DRV_NAME,
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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.of_match_table = tegra_rt5677_of_match,
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},
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.probe = tegra_rt5677_probe,
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.remove = tegra_rt5677_remove,
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};
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module_platform_driver(tegra_rt5677_driver);
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MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
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MODULE_DESCRIPTION("Tegra+RT5677 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_rt5677_of_match);
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