mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-12 14:23:50 +08:00
7b96c6c89a
Add a sound driver for samus which ties together the audio codec and I2S controller. For now broadwell_sound is commented out in the makefile since we cannot compile it without sound support enabled. The next commit fixes this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Sound for broadwell
|
|
*
|
|
* Copyright 2019 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_SOUND
|
|
|
|
#include <common.h>
|
|
#include <audio_codec.h>
|
|
#include <dm.h>
|
|
#include <i2s.h>
|
|
#include <sound.h>
|
|
|
|
static int broadwell_sound_probe(struct udevice *dev)
|
|
{
|
|
return sound_find_codec_i2s(dev);
|
|
}
|
|
|
|
static int broadwell_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 broadwell_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 const struct sound_ops broadwell_sound_ops = {
|
|
.setup = broadwell_sound_setup,
|
|
.play = broadwell_sound_play,
|
|
};
|
|
|
|
static const struct udevice_id broadwell_sound_ids[] = {
|
|
{ .compatible = "google,samus-sound" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(broadwell_sound_drv) = {
|
|
.name = "broadwell_sound",
|
|
.id = UCLASS_SOUND,
|
|
.of_match = broadwell_sound_ids,
|
|
.probe = broadwell_sound_probe,
|
|
.ops = &broadwell_sound_ops,
|
|
};
|