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// SPDX-License-Identifier: GPL-2.0-only
/*
* tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (C) 2010-2012 - NVIDIA, Inc.
*
* Based on code copyright/by:
*
* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
*
* Copyright 2007 Wolfson Microelectronics PLC.
* Author: Graeme Gregory
* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
*/
#include <linux/gpio/consumer.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include "../codecs/wm8903.h"
#include "tegra_asoc_machine.h"
static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
{ .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE },
};
static unsigned int tegra_wm8903_mclk_rate(unsigned int srate)
{
unsigned int mclk;
switch (srate) {
case 64000:
case 88200:
case 96000:
mclk = 128 * srate;
break;
default:
mclk = 256 * srate;
break;
}
/* FIXME: Codec only requires >= 3MHz if OSR==0 */
while (mclk < 6000000)
mclk *= 2;
return mclk;
}
static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
{
struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_card *card = rtd->card;
int err;
/*
* Older version of machine driver was ignoring GPIO polarity,
* forcing it to active-low. This means that all older device-trees
* which set the polarity to active-high are wrong and we need to fix
* them up.
*/
if (machine->asoc->hp_jack_gpio_active_low) {
bool active_low = gpiod_is_active_low(machine->gpiod_hp_det);
machine->hp_jack_gpio->invert = !active_low;
}
err = tegra_asoc_machine_init(rtd);
if (err)
return err;
if (!machine->gpiod_mic_det && machine->asoc->add_mic_jack) {
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
int shrt = 0;
err = snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
SND_JACK_MICROPHONE,
machine->mic_jack,
tegra_wm8903_mic_jack_pins,
ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
if (err) {
dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err);
return err;
}
if (of_property_read_bool(card->dev->of_node, "nvidia,headset"))
shrt = SND_JACK_MICROPHONE;
wm8903_mic_detect(component, machine->mic_jack,
SND_JACK_MICROPHONE, shrt);
}
snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
return 0;
}
static int tegra_wm8903_remove(struct snd_soc_card *card)
{
struct snd_soc_dai_link *link = &card->dai_link[0];
struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, link);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
wm8903_mic_detect(component, NULL, 0, 0);
return 0;
}
SND_SOC_DAILINK_DEFS(hifi,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link tegra_wm8903_dai = {
.name = "WM8903",
.stream_name = "WM8903 PCM",
.init = tegra_wm8903_init,
.dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
SND_SOC_DAILINK_REG(hifi),
};
static struct snd_soc_card snd_soc_tegra_wm8903 = {
.components = "codec:wm8903",
.owner = THIS_MODULE,
.dai_link = &tegra_wm8903_dai,
.num_links = 1,
.remove = tegra_wm8903_remove,
.fully_routed = true,
};
/* older device-trees used wrong polarity for the headphones-detection GPIO */
static const struct tegra_asoc_data tegra_wm8903_data_legacy = {
.mclk_rate = tegra_wm8903_mclk_rate,
.card = &snd_soc_tegra_wm8903,
.hp_jack_gpio_active_low = true,
.add_common_dapm_widgets = true,
.add_common_controls = true,
.add_common_snd_ops = true,
.add_mic_jack = true,
.add_hp_jack = true,
};
static const struct tegra_asoc_data tegra_wm8903_data = {
.mclk_rate = tegra_wm8903_mclk_rate,
.card = &snd_soc_tegra_wm8903,
.add_common_dapm_widgets = true,
.add_common_controls = true,
.add_common_snd_ops = true,
.add_mic_jack = true,
.add_hp_jack = true,
};
static const struct of_device_id tegra_wm8903_of_match[] = {
{ .compatible = "ad,tegra-audio-plutux", .data = &tegra_wm8903_data_legacy },
{ .compatible = "ad,tegra-audio-wm8903-medcom-wide", .data = &tegra_wm8903_data_legacy },
{ .compatible = "ad,tegra-audio-wm8903-tec", .data = &tegra_wm8903_data_legacy },
{ .compatible = "nvidia,tegra-audio-wm8903-cardhu", .data = &tegra_wm8903_data_legacy },
{ .compatible = "nvidia,tegra-audio-wm8903-harmony", .data = &tegra_wm8903_data_legacy },
{ .compatible = "nvidia,tegra-audio-wm8903-picasso", .data = &tegra_wm8903_data_legacy },
{ .compatible = "nvidia,tegra-audio-wm8903-seaboard", .data = &tegra_wm8903_data_legacy },
{ .compatible = "nvidia,tegra-audio-wm8903-ventana", .data = &tegra_wm8903_data_legacy },
{ .compatible = "nvidia,tegra-audio-wm8903", .data = &tegra_wm8903_data },
{},
};
MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);
static struct platform_driver tegra_wm8903_driver = {
.driver = {
.name = "tegra-wm8903",
.of_match_table = tegra_wm8903_of_match,
.pm = &snd_soc_pm_ops,
},
.probe = tegra_asoc_machine_probe,
};
module_platform_driver(tegra_wm8903_driver);
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
MODULE_LICENSE("GPL");
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