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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Google, Inc
*/
#define LOG_CATEGORY UCLASS_SOUND
#include <common.h>
#include <audio_codec.h>
#include <dm.h>
#include <i2s.h>
#include <sound.h>
#include <asm/sdl.h>
struct sandbox_codec_priv {
int interface;
int rate;
int mclk_freq;
int bits_per_sample;
uint channels;
};
struct sandbox_i2s_priv {
int sum; /* Use to sum the provided audio data */
bool silent; /* Sound is silent, don't use SDL */
};
struct sandbox_sound_priv {
int setup_called;
int sum; /* Use to sum the provided audio data */
bool allow_beep; /* true to allow the start_beep() interface */
int frequency_hz; /* Beep frequency if active, else 0 */
};
void sandbox_get_codec_params(struct udevice *dev, int *interfacep, int *ratep,
int *mclk_freqp, int *bits_per_samplep,
uint *channelsp)
{
struct sandbox_codec_priv *priv = dev_get_priv(dev);
*interfacep = priv->interface;
*ratep = priv->rate;
*mclk_freqp = priv->mclk_freq;
*bits_per_samplep = priv->bits_per_sample;
*channelsp = priv->channels;
}
int sandbox_get_i2s_sum(struct udevice *dev)
{
struct sandbox_i2s_priv *priv = dev_get_priv(dev);
return priv->sum;
}
int sandbox_get_setup_called(struct udevice *dev)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
return priv->setup_called;
}
int sandbox_get_sound_sum(struct udevice *dev)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
return priv->sum;
}
void sandbox_set_allow_beep(struct udevice *dev, bool allow)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
priv->allow_beep = allow;
}
int sandbox_get_beep_frequency(struct udevice *dev)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
return priv->frequency_hz;
}
static int sandbox_codec_set_params(struct udevice *dev, int interface,
int rate, int mclk_freq,
int bits_per_sample, uint channels)
{
struct sandbox_codec_priv *priv = dev_get_priv(dev);
priv->interface = interface;
priv->rate = rate;
priv->mclk_freq = mclk_freq;
priv->bits_per_sample = bits_per_sample;
priv->channels = channels;
return 0;
}
static int sandbox_i2s_tx_data(struct udevice *dev, void *data,
uint data_size)
{
struct sandbox_i2s_priv *priv = dev_get_priv(dev);
int i;
for (i = 0; i < data_size; i++)
priv->sum += ((uint8_t *)data)[i];
if (!priv->silent) {
int ret;
ret = sandbox_sdl_sound_play(data, data_size);
if (ret)
return ret;
}
return 0;
}
static int sandbox_i2s_probe(struct udevice *dev)
{
struct i2s_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct sandbox_i2s_priv *priv = dev_get_priv(dev);
/* Use hard-coded values here */
uc_priv->rfs = 256;
uc_priv->bfs = 32;
uc_priv->audio_pll_clk = 192000000;
uc_priv->samplingrate = 48000;
uc_priv->bitspersample = 16;
uc_priv->channels = 2;
uc_priv->id = 1;
priv->silent = dev_read_bool(dev, "sandbox,silent");
if (priv->silent) {
log_warning("Sound is silenced\n");
} else if (sandbox_sdl_sound_init(uc_priv->samplingrate,
uc_priv->channels)) {
/* Ignore any error here - we'll just have no sound */
priv->silent = true;
}
return 0;
}
static int sandbox_sound_setup(struct udevice *dev)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
priv->setup_called++;
return 0;
}
static int sandbox_sound_play(struct udevice *dev, void *data, uint data_size)
{
struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct sandbox_sound_priv *priv = dev_get_priv(dev);
int i;
for (i = 0; i < data_size; i++)
priv->sum += ((uint8_t *)data)[i];
return i2s_tx_data(uc_priv->i2s, data, data_size);
}
int sandbox_sound_start_beep(struct udevice *dev, int frequency_hz)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
if (!priv->allow_beep)
return -ENOSYS;
priv->frequency_hz = frequency_hz;
return 0;
}
int sandbox_sound_stop_beep(struct udevice *dev)
{
struct sandbox_sound_priv *priv = dev_get_priv(dev);
if (!priv->allow_beep)
return -ENOSYS;
priv->frequency_hz = 0;
return 0;
}
static int sandbox_sound_probe(struct udevice *dev)
{
return sound_find_codec_i2s(dev);
}
static const struct audio_codec_ops sandbox_codec_ops = {
.set_params = sandbox_codec_set_params,
};
static const struct udevice_id sandbox_codec_ids[] = {
{ .compatible = "sandbox,audio-codec" },
{ }
};
U_BOOT_DRIVER(sandbox_codec) = {
.name = "sandbox_codec",
.id = UCLASS_AUDIO_CODEC,
.of_match = sandbox_codec_ids,
.ops = &sandbox_codec_ops,
.priv_auto_alloc_size = sizeof(struct sandbox_codec_priv),
};
static const struct i2s_ops sandbox_i2s_ops = {
.tx_data = sandbox_i2s_tx_data,
};
static const struct udevice_id sandbox_i2s_ids[] = {
{ .compatible = "sandbox,i2s" },
{ }
};
U_BOOT_DRIVER(sandbox_i2s) = {
.name = "sandbox_i2s",
.id = UCLASS_I2S,
.of_match = sandbox_i2s_ids,
.ops = &sandbox_i2s_ops,
.probe = sandbox_i2s_probe,
.priv_auto_alloc_size = sizeof(struct sandbox_i2s_priv),
};
static const struct sound_ops sandbox_sound_ops = {
.setup = sandbox_sound_setup,
.play = sandbox_sound_play,
.start_beep = sandbox_sound_start_beep,
.stop_beep = sandbox_sound_stop_beep,
};
static const struct udevice_id sandbox_sound_ids[] = {
{ .compatible = "sandbox,sound" },
{ }
};
U_BOOT_DRIVER(sandbox_sound) = {
.name = "sandbox_sound",
.id = UCLASS_SOUND,
.of_match = sandbox_sound_ids,
.ops = &sandbox_sound_ops,
.priv_auto_alloc_size = sizeof(struct sandbox_sound_priv),
.probe = sandbox_sound_probe,
};
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