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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright 2018 Google, LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
- #define LOG_CATEGORY UCLASS_I2S
- #include <common.h>
- #include <audio_codec.h>
- #include <dm.h>
- #include <i2s.h>
- #include <log.h>
- #include <misc.h>
- #include <sound.h>
- #include <asm/gpio.h>
- #include "tegra_i2s_priv.h"
- static int tegra_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 tegra_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 tegra_sound_probe(struct udevice *dev)
- {
- struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
- struct gpio_desc en_gpio;
- struct udevice *ahub;
- int ret;
- ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
- GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
- ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
- "nvidia,audio-codec",
- &uc_priv->codec);
- if (ret) {
- log_debug("Failed to probe audio codec\n");
- return ret;
- }
- ret = uclass_get_device_by_phandle(UCLASS_I2S, dev,
- "nvidia,i2s-controller",
- &uc_priv->i2s);
- if (ret) {
- log_debug("Cannot find i2s: %d\n", ret);
- return ret;
- }
- /* Set up the audio hub, telling it the currect i2s to use */
- ahub = dev_get_parent(uc_priv->i2s);
- ret = misc_ioctl(ahub, AHUB_MISCOP_SET_I2S, &uc_priv->i2s);
- if (ret) {
- log_debug("Cannot set i2c: %d\n", ret);
- return ret;
- }
- log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
- uc_priv->codec->name, uc_priv->i2s->name);
- return 0;
- }
- static const struct sound_ops tegra_sound_ops = {
- .setup = tegra_sound_setup,
- .play = tegra_sound_play,
- };
- static const struct udevice_id tegra_sound_ids[] = {
- { .compatible = "nvidia,tegra-audio-max98090-nyan-big" },
- { }
- };
- U_BOOT_DRIVER(tegra_sound) = {
- .name = "tegra_sound",
- .id = UCLASS_SOUND,
- .of_match = tegra_sound_ids,
- .probe = tegra_sound_probe,
- .ops = &tegra_sound_ops,
- };
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