mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-24 21:54:01 +00:00
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2018 Google, LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_I2S
|
|
|
|
#include <common.h>
|
|
#include <audio_codec.h>
|
|
#include <dm.h>
|
|
#include <i2s.h>
|
|
#include <log.h>
|
|
#include <misc.h>
|
|
#include <sound.h>
|
|
#include <asm/gpio.h>
|
|
#include "tegra_i2s_priv.h"
|
|
|
|
static int tegra_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 tegra_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 tegra_sound_probe(struct udevice *dev)
|
|
{
|
|
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
struct gpio_desc en_gpio;
|
|
struct udevice *ahub;
|
|
int ret;
|
|
|
|
ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
|
|
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
|
|
|
|
ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
|
|
"nvidia,audio-codec",
|
|
&uc_priv->codec);
|
|
if (ret) {
|
|
log_debug("Failed to probe audio codec\n");
|
|
return ret;
|
|
}
|
|
ret = uclass_get_device_by_phandle(UCLASS_I2S, dev,
|
|
"nvidia,i2s-controller",
|
|
&uc_priv->i2s);
|
|
if (ret) {
|
|
log_debug("Cannot find i2s: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Set up the audio hub, telling it the currect i2s to use */
|
|
ahub = dev_get_parent(uc_priv->i2s);
|
|
ret = misc_ioctl(ahub, AHUB_MISCOP_SET_I2S, &uc_priv->i2s);
|
|
if (ret) {
|
|
log_debug("Cannot set i2c: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
|
|
uc_priv->codec->name, uc_priv->i2s->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct sound_ops tegra_sound_ops = {
|
|
.setup = tegra_sound_setup,
|
|
.play = tegra_sound_play,
|
|
};
|
|
|
|
static const struct udevice_id tegra_sound_ids[] = {
|
|
{ .compatible = "nvidia,tegra-audio-max98090-nyan-big" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(tegra_sound) = {
|
|
.name = "tegra_sound",
|
|
.id = UCLASS_SOUND,
|
|
.of_match = tegra_sound_ids,
|
|
.probe = tegra_sound_probe,
|
|
.ops = &tegra_sound_ops,
|
|
};
|