1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2018 Google, LLC
4 * Written by Simon Glass <sjg@chromium.org>
8 #include <audio_codec.h>
14 #include <asm/arch/power.h>
16 static int samsung_sound_setup(struct udevice *dev)
18 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
19 struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
22 if (uc_priv->setup_done)
24 ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
25 i2c_priv->samplingrate,
26 i2c_priv->samplingrate * i2c_priv->rfs,
27 i2c_priv->bitspersample,
31 uc_priv->setup_done = true;
36 static int samsung_sound_play(struct udevice *dev, void *data, uint data_size)
38 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
40 return i2s_tx_data(uc_priv->i2s, data, data_size);
43 static int samsung_sound_probe(struct udevice *dev)
45 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
46 struct ofnode_phandle_args args;
47 struct gpio_desc en_gpio;
51 ret = gpio_request_by_name(dev, "codec-enable-gpio", 0, &en_gpio,
52 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
54 /* Turn on the GPIO which connects to the codec's "enable" line. */
56 gpio_set_pull(gpio_get_number(&en_gpio), S5P_GPIO_PULL_NONE);
58 ret = uclass_get_device_by_phandle(UCLASS_AUDIO_CODEC, dev,
59 "samsung,audio-codec",
62 debug("Failed to probe audio codec\n");
65 node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
66 if (!ofnode_valid(node)) {
67 debug("Failed to find /cpu subnode\n");
70 ret = ofnode_parse_phandle_with_args(node, "sound-dai",
71 "#sound-dai-cells", 0, 0, &args);
73 debug("Cannot find phandle: %d\n", ret);
76 ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
78 debug("Cannot find i2s: %d\n", ret);
81 debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
82 uc_priv->codec->name, uc_priv->i2s->name);
84 /* Enable codec clock */
90 static const struct sound_ops samsung_sound_ops = {
91 .setup = samsung_sound_setup,
92 .play = samsung_sound_play,
95 static const struct udevice_id samsung_sound_ids[] = {
96 { .compatible = "google,snow-audio-max98095" },
97 { .compatible = "google,spring-audio-max98088" },
98 { .compatible = "samsung,smdk5420-audio-wm8994" },
99 { .compatible = "google,peach-audio-max98090" },
103 U_BOOT_DRIVER(samsung_sound) = {
104 .name = "samsung_sound",
106 .of_match = samsung_sound_ids,
107 .probe = samsung_sound_probe,
108 .ops = &samsung_sound_ops,