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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018 Google, LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <audio_codec.h>
#include <dm.h>
#include <i2s.h>
#include <sound.h>
#include <asm/gpio.h>
#include <asm/arch/power.h>
static int samsung_sound_setup(struct udevice *dev)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
int ret;
if (uc_priv->setup_done)
return -EALREADY;
ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
i2c_priv->samplingrate,
i2c_priv->samplingrate * i2c_priv->rfs,
i2c_priv->bitspersample,
i2c_priv->channels);
if (ret)
return ret;
uc_priv->setup_done = true;
return 0;
}
static int samsung_sound_play(struct udevice *dev, void *data, uint data_size)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
return i2s_tx_data(uc_priv->i2s, data, data_size);
}
static int samsung_sound_probe(struct udevice *dev)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct ofnode_phandle_args args;
struct gpio_desc en_gpio;
ofnode node;
int ret;
ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
/* Turn on the GPIO which connects to the codec's "enable" line. */
if (!ret)
gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
"samsung,audio-codec",
&uc_priv->codec);
if (ret) {
debug("Failed to probe audio codec\n");
return ret;
}
node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
if (!ofnode_valid(node)) {
debug("Failed to find /cpu subnode\n");
return -EINVAL;
}
ret = ofnode_parse_phandle_with_args(node, "sound-dai",
"#sound-dai-cells", 0, 0, &args);
if (ret) {
debug("Cannot find phandle: %d\n", ret);
return ret;
}
ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
if (ret) {
debug("Cannot find i2s: %d\n", ret);
return ret;
}
debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
uc_priv->codec->name, uc_priv->i2s->name);
/* Enable codec clock */
set_xclkout();
return 0;
}
static const struct sound_ops samsung_sound_ops = {
.setup = samsung_sound_setup,
.play = samsung_sound_play,
};
static const struct udevice_id samsung_sound_ids[] = {
{ .compatible = "google,snow-audio-max98095" },
{ .compatible = "google,spring-audio-max98088" },
{ .compatible = "samsung,smdk5420-audio-wm8994" },
{ .compatible = "google,peach-audio-max98090" },
{ }
};
U_BOOT_DRIVER(samsung_sound) = {
.name = "samsung_sound",
.id = UCLASS_SOUND,
.of_match = samsung_sound_ids,
.probe = samsung_sound_probe,
.ops = &samsung_sound_ops,
};
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