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x86: sound: Add sound support for samus (broadwell) 

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>
This commit is contained in:
Simon Glass 2019-02-16 20:25:06 -07:00 committed by Bin Meng
parent cf885929a6
commit 7b96c6c89a
2 changed files with 66 additions and 1 deletions
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2
drivers/sound/Makefile
View File

@ -18,5 +18,5 @@ obj-$(CONFIG_SOUND_MAX98095) += max98095.o maxim_codec.o
obj-$(CONFIG_SOUND_INTEL_HDA) += hda_codec.o
obj-$(CONFIG_SOUND_I8254) += i8254_beep.o
obj-$(CONFIG_SOUND_RT5677) += rt5677.o
obj-$(CONFIG_INTEL_BROADWELL) += broadwell_i2s.o
obj-$(CONFIG_INTEL_BROADWELL) += broadwell_i2s.o #broadwell_sound.o
obj-$(CONFIG_SOUND_IVYBRIDGE) += ivybridge_sound.o

65
drivers/sound/broadwell_sound.c Normal file
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@ -0,0 +1,65 @@
// 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,
};