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https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
268 lines
5.8 KiB
C
268 lines
5.8 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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#define LOG_CATEGORY UCLASS_SOUND
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#include <common.h>
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#include <audio_codec.h>
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#include <dm.h>
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#include <i2s.h>
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#include <log.h>
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#include <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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struct sandbox_i2s_priv {
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int sum; /* Use to sum the provided audio data */
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bool silent; /* Sound is silent, don't use SDL */
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};
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struct sandbox_sound_priv {
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int setup_called; /* Incremented when setup() method is called */
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bool active; /* TX data is being sent */
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int sum; /* Use to sum the provided audio data */
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bool allow_beep; /* true to allow the start_beep() interface */
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int frequency_hz; /* Beep frequency if active, else 0 */
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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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int sandbox_get_i2s_sum(struct udevice *dev)
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{
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struct sandbox_i2s_priv *priv = dev_get_priv(dev);
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return priv->sum;
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}
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int sandbox_get_setup_called(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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return priv->setup_called;
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}
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int sandbox_get_sound_active(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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return priv->active;
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}
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int sandbox_get_sound_sum(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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return priv->sum;
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}
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void sandbox_set_allow_beep(struct udevice *dev, bool allow)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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priv->allow_beep = allow;
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}
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int sandbox_get_beep_frequency(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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return priv->frequency_hz;
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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 int sandbox_i2s_tx_data(struct udevice *dev, void *data,
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uint data_size)
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{
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struct sandbox_i2s_priv *priv = dev_get_priv(dev);
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int i;
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for (i = 0; i < data_size; i++)
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priv->sum += ((uint8_t *)data)[i];
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if (!priv->silent) {
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int ret;
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ret = sandbox_sdl_sound_play(data, data_size);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int sandbox_i2s_probe(struct udevice *dev)
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{
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struct i2s_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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struct sandbox_i2s_priv *priv = dev_get_priv(dev);
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/* Use hard-coded values here */
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uc_priv->rfs = 256;
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uc_priv->bfs = 32;
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uc_priv->audio_pll_clk = 192000000;
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uc_priv->samplingrate = 48000;
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uc_priv->bitspersample = 16;
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uc_priv->channels = 2;
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uc_priv->id = 1;
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priv->silent = dev_read_bool(dev, "sandbox,silent");
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if (priv->silent) {
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log_warning("Sound is silenced\n");
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} else if (sandbox_sdl_sound_init(uc_priv->samplingrate,
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uc_priv->channels)) {
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/* Ignore any error here - we'll just have no sound */
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priv->silent = true;
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}
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return 0;
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}
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static int sandbox_sound_setup(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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priv->setup_called++;
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return 0;
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}
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static int sandbox_sound_play(struct udevice *dev, void *data, uint data_size)
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{
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struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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int i;
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for (i = 0; i < data_size; i++)
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priv->sum += ((uint8_t *)data)[i];
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return i2s_tx_data(uc_priv->i2s, data, data_size);
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}
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static int sandbox_sound_stop_play(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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sandbox_sdl_sound_stop();
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priv->active = false;
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return 0;
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}
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int sandbox_sound_start_beep(struct udevice *dev, int frequency_hz)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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if (!priv->allow_beep)
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return -ENOSYS;
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priv->frequency_hz = frequency_hz;
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return 0;
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}
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int sandbox_sound_stop_beep(struct udevice *dev)
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{
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struct sandbox_sound_priv *priv = dev_get_priv(dev);
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if (!priv->allow_beep)
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return -ENOSYS;
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priv->frequency_hz = 0;
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return 0;
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}
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static int sandbox_sound_probe(struct udevice *dev)
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{
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return sound_find_codec_i2s(dev);
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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 = sizeof(struct sandbox_codec_priv),
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};
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static const struct i2s_ops sandbox_i2s_ops = {
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.tx_data = sandbox_i2s_tx_data,
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};
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static const struct udevice_id sandbox_i2s_ids[] = {
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{ .compatible = "sandbox,i2s" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_i2s) = {
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.name = "sandbox_i2s",
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.id = UCLASS_I2S,
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.of_match = sandbox_i2s_ids,
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.ops = &sandbox_i2s_ops,
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.probe = sandbox_i2s_probe,
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.priv_auto = sizeof(struct sandbox_i2s_priv),
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};
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static const struct sound_ops sandbox_sound_ops = {
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.setup = sandbox_sound_setup,
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.play = sandbox_sound_play,
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.stop_play = sandbox_sound_stop_play,
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.start_beep = sandbox_sound_start_beep,
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.stop_beep = sandbox_sound_stop_beep,
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};
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static const struct udevice_id sandbox_sound_ids[] = {
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{ .compatible = "sandbox,sound" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_sound) = {
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.name = "sandbox_sound",
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.id = UCLASS_SOUND,
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.of_match = sandbox_sound_ids,
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.ops = &sandbox_sound_ops,
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.priv_auto = sizeof(struct sandbox_sound_priv),
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.probe = sandbox_sound_probe,
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};
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