109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2018 Google, LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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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 <sound.h>
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#include <asm/gpio.h>
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#include <asm/arch/power.h>
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static int samsung_sound_setup(struct udevice *dev)
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{
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struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
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int ret;
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if (uc_priv->setup_done)
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return -EALREADY;
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ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
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i2c_priv->samplingrate,
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i2c_priv->samplingrate * i2c_priv->rfs,
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i2c_priv->bitspersample,
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i2c_priv->channels);
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if (ret)
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return ret;
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uc_priv->setup_done = true;
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return 0;
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}
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static int samsung_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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return i2s_tx_data(uc_priv->i2s, data, data_size);
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}
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static int samsung_sound_probe(struct udevice *dev)
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{
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struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
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struct ofnode_phandle_args args;
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struct gpio_desc en_gpio;
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ofnode node;
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int ret;
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ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
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GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
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/* Turn on the GPIO which connects to the codec's "enable" line. */
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if (!ret)
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gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
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ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
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"samsung,audio-codec",
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&uc_priv->codec);
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if (ret) {
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debug("Failed to probe audio codec\n");
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return ret;
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}
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node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
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if (!ofnode_valid(node)) {
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debug("Failed to find /cpu subnode\n");
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return -EINVAL;
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}
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ret = ofnode_parse_phandle_with_args(node, "sound-dai",
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"#sound-dai-cells", 0, 0, &args);
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if (ret) {
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debug("Cannot find phandle: %d\n", ret);
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return ret;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
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if (ret) {
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debug("Cannot find i2s: %d\n", ret);
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return ret;
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}
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debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
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uc_priv->codec->name, uc_priv->i2s->name);
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/* Enable codec clock */
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set_xclkout();
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return 0;
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}
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static const struct sound_ops samsung_sound_ops = {
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.setup = samsung_sound_setup,
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.play = samsung_sound_play,
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};
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static const struct udevice_id samsung_sound_ids[] = {
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{ .compatible = "google,snow-audio-max98095" },
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{ .compatible = "google,spring-audio-max98088" },
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{ .compatible = "samsung,smdk5420-audio-wm8994" },
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{ .compatible = "google,peach-audio-max98090" },
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{ }
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};
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U_BOOT_DRIVER(samsung_sound) = {
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.name = "samsung_sound",
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.id = UCLASS_SOUND,
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.of_match = samsung_sound_ids,
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.probe = samsung_sound_probe,
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.ops = &samsung_sound_ops,
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};
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