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6
7#include <linux/module.h>
8#include <linux/platform_device.h>
9#include <linux/clk.h>
10
11#include <sound/soc.h>
12#include <sound/soc-dapm.h>
13#include <sound/pcm.h>
14#include <sound/pcm_params.h>
15
16#include "i2s.h"
17
18static int arndale_hw_params(struct snd_pcm_substream *substream,
19 struct snd_pcm_hw_params *params)
20{
21 struct snd_soc_pcm_runtime *rtd = substream->private_data;
22 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
23 struct snd_soc_dai *codec_dai = rtd->codec_dai;
24 int rfs, ret;
25 unsigned long rclk;
26
27 rfs = 256;
28
29 rclk = params_rate(params) * rfs;
30
31 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
32 0, SND_SOC_CLOCK_OUT);
33 if (ret < 0)
34 return ret;
35
36 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
37 0, SND_SOC_CLOCK_OUT);
38
39 if (ret < 0)
40 return ret;
41
42 ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
43 if (ret < 0)
44 return ret;
45
46 return 0;
47}
48
49static struct snd_soc_ops arndale_ops = {
50 .hw_params = arndale_hw_params,
51};
52
53static struct snd_soc_dai_link arndale_rt5631_dai[] = {
54 {
55 .name = "RT5631 HiFi",
56 .stream_name = "Primary",
57 .codec_dai_name = "rt5631-hifi",
58 .dai_fmt = SND_SOC_DAIFMT_I2S
59 | SND_SOC_DAIFMT_NB_NF
60 | SND_SOC_DAIFMT_CBS_CFS,
61 .ops = &arndale_ops,
62 },
63};
64
65static struct snd_soc_card arndale_rt5631 = {
66 .name = "Arndale RT5631",
67 .owner = THIS_MODULE,
68 .dai_link = arndale_rt5631_dai,
69 .num_links = ARRAY_SIZE(arndale_rt5631_dai),
70};
71
72static int arndale_audio_probe(struct platform_device *pdev)
73{
74 int n, ret;
75 struct device_node *np = pdev->dev.of_node;
76 struct snd_soc_card *card = &arndale_rt5631;
77
78 card->dev = &pdev->dev;
79
80 for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) {
81 if (!arndale_rt5631_dai[n].cpu_dai_name) {
82 arndale_rt5631_dai[n].cpu_of_node = of_parse_phandle(np,
83 "samsung,audio-cpu", n);
84
85 if (!arndale_rt5631_dai[n].cpu_of_node) {
86 dev_err(&pdev->dev,
87 "Property 'samsung,audio-cpu' missing or invalid\n");
88 return -EINVAL;
89 }
90 }
91 if (!arndale_rt5631_dai[n].platform_name)
92 arndale_rt5631_dai[n].platform_of_node =
93 arndale_rt5631_dai[n].cpu_of_node;
94
95 arndale_rt5631_dai[n].codec_name = NULL;
96 arndale_rt5631_dai[n].codec_of_node = of_parse_phandle(np,
97 "samsung,audio-codec", n);
98 if (!arndale_rt5631_dai[0].codec_of_node) {
99 dev_err(&pdev->dev,
100 "Property 'samsung,audio-codec' missing or invalid\n");
101 return -EINVAL;
102 }
103 }
104
105 ret = devm_snd_soc_register_card(card->dev, card);
106
107 if (ret)
108 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
109
110 return ret;
111}
112
113static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
114 { .compatible = "samsung,arndale-rt5631", },
115 { .compatible = "samsung,arndale-alc5631", },
116 {},
117};
118MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match);
119
120static struct platform_driver arndale_audio_driver = {
121 .driver = {
122 .name = "arndale-audio",
123 .pm = &snd_soc_pm_ops,
124 .of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
125 },
126 .probe = arndale_audio_probe,
127};
128
129module_platform_driver(arndale_audio_driver);
130
131MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
132MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
133MODULE_LICENSE("GPL");
134
