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