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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 59aea29a31869ed0fd5ffc4b95050db966fcaf6d / . / drivers / sound / rockchip_sound.c
blob: e7fb9fb1646970dcbf196a5525a6ffc5a429c49d [file] [log] [blame]
Simon Glassbcea0e12018-12-27 20:15:22 -0700[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2018 Google, LLC
4 * Written by Simon Glass <sjg@chromium.org>
5 */
6
7#define LOG_CATEGORY UCLASS_SOUND
8
9#include <common.h>
10#include <audio_codec.h>
11#include <clk.h>
12#include <dm.h>
13#include <i2s.h>
14#include <misc.h>
15#include <sound.h>
16#include <asm/arch/periph.h>
17#include <dm/pinctrl.h>
18
19static int rockchip_sound_setup(struct udevice *dev)
20{
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);
23 int ret;
24
25 if (uc_priv->setup_done)
26 return -EALREADY;
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,
31 i2c_priv->channels);
32 if (ret)
33 return ret;
34 uc_priv->setup_done = true;
35
36 return 0;
37}
38
39static int rockchip_sound_play(struct udevice *dev, void *data, uint data_size)
40{
41 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
42
43 return i2s_tx_data(uc_priv->i2s, data, data_size);
44}
45
46static int rockchip_sound_probe(struct udevice *dev)
47{
48 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
49 struct ofnode_phandle_args args;
50 struct udevice *pinctrl;
51 struct clk clk;
52 ofnode node;
53 int ret;
54
55 node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
56 if (!ofnode_valid(node)) {
57 log_debug("Failed to find /cpu subnode\n");
58 return -EINVAL;
59 }
60 ret = ofnode_parse_phandle_with_args(node, "sound-dai",
61 "#sound-dai-cells", 0, 0, &args);
62 if (ret) {
63 log_debug("Cannot find i2s phandle: %d\n", ret);
64 return ret;
65 }
66 ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
67 if (ret) {
68 log_debug("Cannot find i2s: %d\n", ret);
69 return ret;
70 }
71
72 node = ofnode_find_subnode(dev_ofnode(dev), "codec");
73 if (!ofnode_valid(node)) {
74 log_debug("Failed to find /codec subnode\n");
75 return -EINVAL;
76 }
77 ret = ofnode_parse_phandle_with_args(node, "sound-dai",
78 "#sound-dai-cells", 0, 0, &args);
79 if (ret) {
80 log_debug("Cannot find codec phandle: %d\n", ret);
81 return ret;
82 }
83 ret = uclass_get_device_by_ofnode(UCLASS_AUDIO_CODEC, args.node,
84 &uc_priv->codec);
85 if (ret) {
86 log_debug("Cannot find audio codec: %d\n", ret);
87 return ret;
88 }
89 ret = clk_get_by_index(uc_priv->i2s, 1, &clk);
90 if (ret) {
91 log_debug("Cannot find clock: %d\n", ret);
92 return ret;
93 }
94 ret = clk_set_rate(&clk, 12288000);
95 if (ret < 0) {
96 log_debug("Cannot find clock: %d\n", ret);
97 return ret;
98 }
99 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
100 if (ret) {
101 debug("%s: Cannot find pinctrl device\n", __func__);
102 return ret;
103 }
104 ret = pinctrl_request(pinctrl, PERIPH_ID_I2S, 0);
105 if (ret) {
106 debug("%s: Cannot select I2C pinctrl\n", __func__);
107 return ret;
108 }
109
110 log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
111 uc_priv->codec->name, uc_priv->i2s->name);
112
113 return 0;
114}
115
116static const struct sound_ops rockchip_sound_ops = {
117 .setup = rockchip_sound_setup,
118 .play = rockchip_sound_play,
119};
120
121static const struct udevice_id rockchip_sound_ids[] = {
122 { .compatible = "rockchip,audio-max98090-jerry" },
123 { }
124};
125
126U_BOOT_DRIVER(rockchip_sound) = {
127 .name = "rockchip_sound",
128 .id = UCLASS_SOUND,
129 .of_match = rockchip_sound_ids,
130 .probe = rockchip_sound_probe,
131 .ops = &rockchip_sound_ops,
132};