This patch contains scripts to decrease the time taken for
[kvmfornfv.git] / kernel / sound / soc / samsung / arndale_rt5631.c
1 /*
2  *  arndale_rt5631.c
3  *
4  *  Copyright (c) 2014, Insignal Co., Ltd.
5  *
6  *  Author: Claude <claude@insginal.co.kr>
7  *
8  *  This program is free software; you can redistribute  it and/or modify it
9  *  under  the terms of  the GNU General  Public License as published by the
10  *  Free Software Foundation;  either version 2 of the  License, or (at your
11  *  option) any later version.
12  */
13
14 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <linux/clk.h>
17
18 #include <sound/soc.h>
19 #include <sound/soc-dapm.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22
23 #include "i2s.h"
24
25 static int arndale_hw_params(struct snd_pcm_substream *substream,
26         struct snd_pcm_hw_params *params)
27 {
28         struct snd_soc_pcm_runtime *rtd = substream->private_data;
29         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
30         struct snd_soc_dai *codec_dai = rtd->codec_dai;
31         int rfs, ret;
32         unsigned long rclk;
33
34         rfs = 256;
35
36         rclk = params_rate(params) * rfs;
37
38         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
39                                         0, SND_SOC_CLOCK_OUT);
40         if (ret < 0)
41                 return ret;
42
43         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
44                                         0, SND_SOC_CLOCK_OUT);
45
46         if (ret < 0)
47                 return ret;
48
49         ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
50         if (ret < 0)
51                 return ret;
52
53         return 0;
54 }
55
56 static struct snd_soc_ops arndale_ops = {
57         .hw_params = arndale_hw_params,
58 };
59
60 static struct snd_soc_dai_link arndale_rt5631_dai[] = {
61         {
62                 .name = "RT5631 HiFi",
63                 .stream_name = "Primary",
64                 .codec_dai_name = "rt5631-hifi",
65                 .dai_fmt = SND_SOC_DAIFMT_I2S
66                         | SND_SOC_DAIFMT_NB_NF
67                         | SND_SOC_DAIFMT_CBS_CFS,
68                 .ops = &arndale_ops,
69         },
70 };
71
72 static struct snd_soc_card arndale_rt5631 = {
73         .name = "Arndale RT5631",
74         .owner = THIS_MODULE,
75         .dai_link = arndale_rt5631_dai,
76         .num_links = ARRAY_SIZE(arndale_rt5631_dai),
77 };
78
79 static int arndale_audio_probe(struct platform_device *pdev)
80 {
81         int n, ret;
82         struct device_node *np = pdev->dev.of_node;
83         struct snd_soc_card *card = &arndale_rt5631;
84
85         card->dev = &pdev->dev;
86
87         for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) {
88                 if (!arndale_rt5631_dai[n].cpu_dai_name) {
89                         arndale_rt5631_dai[n].cpu_of_node = of_parse_phandle(np,
90                                         "samsung,audio-cpu", n);
91
92                         if (!arndale_rt5631_dai[n].cpu_of_node) {
93                                 dev_err(&pdev->dev,
94                                 "Property 'samsung,audio-cpu' missing or invalid\n");
95                                 return -EINVAL;
96                         }
97                 }
98                 if (!arndale_rt5631_dai[n].platform_name)
99                         arndale_rt5631_dai[n].platform_of_node =
100                                         arndale_rt5631_dai[n].cpu_of_node;
101
102                 arndale_rt5631_dai[n].codec_name = NULL;
103                 arndale_rt5631_dai[n].codec_of_node = of_parse_phandle(np,
104                                         "samsung,audio-codec", n);
105                 if (!arndale_rt5631_dai[0].codec_of_node) {
106                         dev_err(&pdev->dev,
107                         "Property 'samsung,audio-codec' missing or invalid\n");
108                         return -EINVAL;
109                 }
110         }
111
112         ret = devm_snd_soc_register_card(card->dev, card);
113
114         if (ret)
115                 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
116
117         return ret;
118 }
119
120 static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
121         { .compatible = "samsung,arndale-rt5631", },
122         { .compatible = "samsung,arndale-alc5631", },
123         {},
124 };
125 MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match);
126
127 static struct platform_driver arndale_audio_driver = {
128         .driver = {
129                 .name   = "arndale-audio",
130                 .pm = &snd_soc_pm_ops,
131                 .of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
132         },
133         .probe = arndale_audio_probe,
134 };
135
136 module_platform_driver(arndale_audio_driver);
137
138 MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
139 MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
140 MODULE_LICENSE("GPL");