mirror of
https://github.com/brain-hackers/u-boot-brain
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ce6d99a056
An audio codec provides a way to convert digital data to sound and vice versa. Add a simple uclass which just supports setting the parameters for the codec. Signed-off-by: Simon Glass <sjg@chromium.org>
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2013 Google, Inc
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*/
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#include <common.h>
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#include <dm.h>
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#include <audio_codec.h>
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#include <asm/sound.h>
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#include <asm/sdl.h>
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struct sandbox_codec_priv {
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int interface;
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int rate;
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int mclk_freq;
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int bits_per_sample;
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uint channels;
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};
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int sound_play(uint32_t msec, uint32_t frequency)
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{
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sandbox_sdl_sound_start(frequency);
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mdelay(msec);
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sandbox_sdl_sound_stop();
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return 0;
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}
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int sound_init(const void *blob)
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{
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return sandbox_sdl_sound_init();
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}
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void sandbox_get_codec_params(struct udevice *dev, int *interfacep, int *ratep,
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int *mclk_freqp, int *bits_per_samplep,
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uint *channelsp)
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{
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struct sandbox_codec_priv *priv = dev_get_priv(dev);
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*interfacep = priv->interface;
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*ratep = priv->rate;
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*mclk_freqp = priv->mclk_freq;
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*bits_per_samplep = priv->bits_per_sample;
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*channelsp = priv->channels;
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}
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static int sandbox_codec_set_params(struct udevice *dev, int interface,
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int rate, int mclk_freq,
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int bits_per_sample, uint channels)
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{
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struct sandbox_codec_priv *priv = dev_get_priv(dev);
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priv->interface = interface;
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priv->rate = rate;
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priv->mclk_freq = mclk_freq;
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priv->bits_per_sample = bits_per_sample;
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priv->channels = channels;
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return 0;
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}
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static const struct audio_codec_ops sandbox_codec_ops = {
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.set_params = sandbox_codec_set_params,
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};
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static const struct udevice_id sandbox_codec_ids[] = {
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{ .compatible = "sandbox,audio-codec" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_codec) = {
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.name = "sandbox_codec",
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.id = UCLASS_AUDIO_CODEC,
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.of_match = sandbox_codec_ids,
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.ops = &sandbox_codec_ops,
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.priv_auto_alloc_size = sizeof(struct sandbox_codec_priv),
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};
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