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/*
* Intel Baytrail SST MAX98090 machine driver
* Copyright (c) 2014, Intel Corporation.
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../../codecs/max98090.h"
struct byt_max98090_private {
struct snd_soc_jack jack;
};
static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Int Mic", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
};
static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
{"IN34", NULL, "Headset Mic"},
{"Headset Mic", NULL, "MICBIAS"},
{"DMICL", NULL, "Int Mic"},
{"Headphone", NULL, "HPL"},
{"Headphone", NULL, "HPR"},
{"Ext Spk", NULL, "SPKL"},
{"Ext Spk", NULL, "SPKR"},
};
static const struct snd_kcontrol_new byt_max98090_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("Int Mic"),
SOC_DAPM_PIN_SWITCH("Ext Spk"),
};
static struct snd_soc_jack_pin hs_jack_pins[] = {
{
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
};
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
{
.name = "hp",
.report = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
.debounce_time = 200,
},
{
.name = "mic",
.invert = 1,
.report = SND_JACK_MICROPHONE,
.debounce_time = 200,
},
};
static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
{ "hp-gpios", &hp_gpios, 1 },
{ "mic-gpios", &mic_gpios, 1 },
{},
};
static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
{
int ret;
struct snd_soc_card *card = runtime->card;
struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
struct snd_soc_jack *jack = &drv->jack;
card->dapm.idle_bias_off = true;
ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
M98090_REG_SYSTEM_CLOCK,
25000000, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(card->dev, "Can't set codec clock %d\n", ret);
return ret;
}
/* Enable jack detection */
ret = snd_soc_card_jack_new(runtime->card, "Headset",
SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
if (ret)
return ret;
return snd_soc_jack_add_gpiods(card->dev->parent, jack,
ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
}
static struct snd_soc_dai_link byt_max98090_dais[] = {
{
.name = "Baytrail Audio",
.stream_name = "Audio",
.cpu_dai_name = "baytrail-pcm-audio",
.codec_dai_name = "HiFi",
.codec_name = "i2c-193C9890:00",
.platform_name = "baytrail-pcm-audio",
.init = byt_max98090_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
},
};
static struct snd_soc_card byt_max98090_card = {
.name = "byt-max98090",
.owner = THIS_MODULE,
.dai_link = byt_max98090_dais,
.num_links = ARRAY_SIZE(byt_max98090_dais),
.dapm_widgets = byt_max98090_widgets,
.num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
.dapm_routes = byt_max98090_audio_map,
.num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
.controls = byt_max98090_controls,
.num_controls = ARRAY_SIZE(byt_max98090_controls),
.fully_routed = true,
};
static int byt_max98090_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct byt_max98090_private *priv;
int ret_val;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
if (!priv) {
dev_err(&pdev->dev, "allocation failed\n");
return -ENOMEM;
}
ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
if (ret_val)
dev_dbg(dev, "Unable to add GPIO mapping table\n");
byt_max98090_card.dev = &pdev->dev;
snd_soc_card_set_drvdata(&byt_max98090_card, priv);
ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
if (ret_val) {
dev_err(&pdev->dev,
"snd_soc_register_card failed %d\n", ret_val);
return ret_val;
}
return 0;
}
static int byt_max98090_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct byt_max98090_private *priv = snd_soc_card_get_drvdata(card);
snd_soc_jack_free_gpios(&priv->jack, ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
return 0;
}
static struct platform_driver byt_max98090_driver = {
.probe = byt_max98090_probe,
.remove = byt_max98090_remove,
.driver = {
.name = "byt-max98090",
.pm = &snd_soc_pm_ops,
},
};
module_platform_driver(byt_max98090_driver)
MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:byt-max98090");
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