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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 <log.h>
15#include <misc.h>
16#include <sound.h>
17#include <asm/arch-rockchip/periph.h>
18#include <dm/pinctrl.h>
19
20static int rockchip_sound_setup(struct udevice *dev)
21{
22 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
23 struct i2s_uc_priv *i2c_priv = dev_get_uclass_priv(uc_priv->i2s);
24 int ret;
25
26 if (uc_priv->setup_done)
27 return -EALREADY;
28 ret = audio_codec_set_params(uc_priv->codec, i2c_priv->id,
29 i2c_priv->samplingrate,
30 i2c_priv->samplingrate * i2c_priv->rfs,
31 i2c_priv->bitspersample,
32 i2c_priv->channels);
33 if (ret)
34 return ret;
35 uc_priv->setup_done = true;
36
37 return 0;
38}
39
40static int rockchip_sound_play(struct udevice *dev, void *data, uint data_size)
41{
42 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
43
44 return i2s_tx_data(uc_priv->i2s, data, data_size);
45}
46
47static int rockchip_sound_probe(struct udevice *dev)
48{
49 struct sound_uc_priv *uc_priv = dev_get_uclass_priv(dev);
50 struct ofnode_phandle_args args;
51 struct udevice *pinctrl;
52 struct clk clk;
53 ofnode node;
54 int ret;
55
56 node = ofnode_find_subnode(dev_ofnode(dev), "cpu");
57 if (!ofnode_valid(node)) {
58 log_debug("Failed to find /cpu subnode\n");
59 return -EINVAL;
60 }
61 ret = ofnode_parse_phandle_with_args(node, "sound-dai",
62 "#sound-dai-cells", 0, 0, &args);
63 if (ret) {
64 log_debug("Cannot find i2s phandle: %d\n", ret);
65 return ret;
66 }
67 ret = uclass_get_device_by_ofnode(UCLASS_I2S, args.node, &uc_priv->i2s);
68 if (ret) {
69 log_debug("Cannot find i2s: %d\n", ret);
70 return ret;
71 }
72
73 node = ofnode_find_subnode(dev_ofnode(dev), "codec");
74 if (!ofnode_valid(node)) {
75 log_debug("Failed to find /codec subnode\n");
76 return -EINVAL;
77 }
78 ret = ofnode_parse_phandle_with_args(node, "sound-dai",
79 "#sound-dai-cells", 0, 0, &args);
80 if (ret) {
81 log_debug("Cannot find codec phandle: %d\n", ret);
82 return ret;
83 }
84 ret = uclass_get_device_by_ofnode(UCLASS_AUDIO_CODEC, args.node,
85 &uc_priv->codec);
86 if (ret) {
87 log_debug("Cannot find audio codec: %d\n", ret);
88 return ret;
89 }
90 ret = clk_get_by_index(uc_priv->i2s, 1, &clk);
91 if (ret) {
92 log_debug("Cannot find clock: %d\n", ret);
93 return ret;
94 }
95 ret = clk_set_rate(&clk, 12288000);
96 if (ret < 0) {
97 log_debug("Cannot find clock: %d\n", ret);
98 return ret;
99 }
100 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
101 if (ret) {
102 debug("%s: Cannot find pinctrl device\n", __func__);
103 return ret;
104 }
105 ret = pinctrl_request(pinctrl, PERIPH_ID_I2S, 0);
106 if (ret) {
107 debug("%s: Cannot select I2C pinctrl\n", __func__);
108 return ret;
109 }
110
111 log_debug("Probed sound '%s' with codec '%s' and i2s '%s'\n", dev->name,
112 uc_priv->codec->name, uc_priv->i2s->name);
113
114 return 0;
115}
116
117static const struct sound_ops rockchip_sound_ops = {
118 .setup = rockchip_sound_setup,
119 .play = rockchip_sound_play,
120};
121
122static const struct udevice_id rockchip_sound_ids[] = {
123 { .compatible = "rockchip,audio-max98090-jerry" },
124 { }
125};
126
127U_BOOT_DRIVER(rockchip_sound) = {
128 .name = "rockchip_sound",
129 .id = UCLASS_SOUND,
130 .of_match = rockchip_sound_ids,
131 .probe = rockchip_sound_probe,
132 .ops = &rockchip_sound_ops,
133};
134
