1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Sound for broadwell
4 *
5 * Copyright 2019 Google LLC
6 * Written by Simon Glass <sjg@chromium.org>
7 */
8
9 #define LOG_CATEGORY UCLASS_SOUND
10
11 #include <common.h>
12 #include <audio_codec.h>
13 #include <dm.h>
14 #include <i2s.h>
15 #include <sound.h>
16
broadwell_sound_probe(struct udevice * dev)17 static int broadwell_sound_probe(struct udevice *dev)
18 {
19 return sound_find_codec_i2s(dev);
20 }
21
broadwell_sound_setup(struct udevice * dev)22 static int broadwell_sound_setup(struct udevice *dev)
23 {
24 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
25 struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
26 int ret;
27
28 if (uc_priv->setup_done)
29 return -EALREADY;
30 ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
31 i2c_priv->samplingrate,
32 i2c_priv->samplingrate * i2c_priv->rfs,
33 i2c_priv->bitspersample,
34 i2c_priv->channels);
35 if (ret)
36 return ret;
37 uc_priv->setup_done = true;
38
39 return 0;
40 }
41
broadwell_sound_play(struct udevice * dev,void * data,uint data_size)42 static int broadwell_sound_play(struct udevice *dev, void *data, uint data_size)
43 {
44 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
45
46 return i2s_tx_data(uc_priv->i2s, data, data_size);
47 }
48
49 static const struct sound_ops broadwell_sound_ops = {
50 .setup = broadwell_sound_setup,
51 .play = broadwell_sound_play,
52 };
53
54 static const struct udevice_id broadwell_sound_ids[] = {
55 { .compatible = "google,samus-sound" },
56 { }
57 };
58
59 U_BOOT_DRIVER(broadwell_sound_drv) = {
60 .name = "broadwell_sound",
61 .id = UCLASS_SOUND,
62 .of_match = broadwell_sound_ids,
63 .probe = broadwell_sound_probe,
64 .ops = &broadwell_sound_ops,
65 };
66