1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2018 Google, LLC
4 * Written by Simon Glass <sjg@chromium.org>
7 #define LOG_CATEGORY UCLASS_I2S
10 #include <audio_codec.h>
17 #include "tegra_i2s_priv.h"
19 static int tegra_sound_setup(struct udevice *dev)
21 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
22 struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
25 if (uc_priv->setup_done)
27 ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
28 i2c_priv->samplingrate,
29 i2c_priv->samplingrate * i2c_priv->rfs,
30 i2c_priv->bitspersample,
34 uc_priv->setup_done = true;
39 static int tegra_sound_play(struct udevice *dev, void *data, uint data_size)
41 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
43 return i2s_tx_data(uc_priv->i2s, data, data_size);
46 static int tegra_sound_probe(struct udevice *dev)
48 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
49 struct gpio_desc en_gpio;
53 ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
54 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
56 ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
60 log_debug("Failed to probe audio codec\n");
63 ret = uclass_get_device_by_phandle(UCLASS_I2S, dev,
64 "nvidia,i2s-controller",
67 log_debug("Cannot find i2s: %d\n", ret);
71 /* Set up the audio hub, telling it the currect i2s to use */
72 ahub = dev_get_parent(uc_priv->i2s);
73 ret = misc_ioctl(ahub, AHUB_MISCOP_SET_I2S, &uc_priv->i2s);
75 log_debug("Cannot set i2c: %d\n", ret);
79 log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
80 uc_priv->codec->name, uc_priv->i2s->name);
85 static const struct sound_ops tegra_sound_ops = {
86 .setup = tegra_sound_setup,
87 .play = tegra_sound_play,
90 static const struct udevice_id tegra_sound_ids[] = {
91 { .compatible = "nvidia,tegra-audio-max98090-nyan-big" },
95 U_BOOT_DRIVER(tegra_sound) = {
96 .name = "tegra_sound",
98 .of_match = tegra_sound_ids,
99 .probe = tegra_sound_probe,
100 .ops = &tegra_sound_ops,