1 /*
2 * kirkwood-t5325.c
3 *
4 * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/interrupt.h>
15 #include <linux/platform_device.h>
16 #include <linux/slab.h>
17 #include <sound/soc.h>
18 #include <mach/kirkwood.h>
19 #include <linux/platform_data/asoc-kirkwood.h>
20 #include <asm/mach-types.h>
21 #include "../codecs/alc5623.h"
22
t5325_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)23 static int t5325_hw_params(struct snd_pcm_substream *substream,
24 struct snd_pcm_hw_params *params)
25 {
26 struct snd_soc_pcm_runtime *rtd = substream->private_data;
27 struct snd_soc_dai *codec_dai = rtd->codec_dai;
28 unsigned int freq;
29
30 freq = params_rate(params) * 256;
31
32 return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
33
34 }
35
36 static struct snd_soc_ops t5325_ops = {
37 .hw_params = t5325_hw_params,
38 };
39
40 static const struct snd_soc_dapm_widget t5325_dapm_widgets[] = {
41 SND_SOC_DAPM_HP("Headphone Jack", NULL),
42 SND_SOC_DAPM_SPK("Speaker", NULL),
43 SND_SOC_DAPM_MIC("Mic Jack", NULL),
44 };
45
46 static const struct snd_soc_dapm_route t5325_route[] = {
47 { "Headphone Jack", NULL, "HPL" },
48 { "Headphone Jack", NULL, "HPR" },
49
50 {"Speaker", NULL, "SPKOUT"},
51 {"Speaker", NULL, "SPKOUTN"},
52
53 { "MIC1", NULL, "Mic Jack" },
54 { "MIC2", NULL, "Mic Jack" },
55 };
56
t5325_dai_init(struct snd_soc_pcm_runtime * rtd)57 static int t5325_dai_init(struct snd_soc_pcm_runtime *rtd)
58 {
59 struct snd_soc_codec *codec = rtd->codec;
60 struct snd_soc_dapm_context *dapm = &codec->dapm;
61
62 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
63 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
64 snd_soc_dapm_enable_pin(dapm, "Speaker");
65
66 return 0;
67 }
68
69 static struct snd_soc_dai_link t5325_dai[] = {
70 {
71 .name = "ALC5621",
72 .stream_name = "ALC5621 HiFi",
73 .cpu_dai_name = "kirkwood-i2s",
74 .platform_name = "kirkwood-pcm-audio",
75 .codec_dai_name = "alc5621-hifi",
76 .codec_name = "alc562x-codec.0-001a",
77 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS,
78 .ops = &t5325_ops,
79 .init = t5325_dai_init,
80 },
81 };
82
83 static struct snd_soc_card t5325 = {
84 .name = "t5325",
85 .owner = THIS_MODULE,
86 .dai_link = t5325_dai,
87 .num_links = ARRAY_SIZE(t5325_dai),
88
89 .dapm_widgets = t5325_dapm_widgets,
90 .num_dapm_widgets = ARRAY_SIZE(t5325_dapm_widgets),
91 .dapm_routes = t5325_route,
92 .num_dapm_routes = ARRAY_SIZE(t5325_route),
93 };
94
t5325_probe(struct platform_device * pdev)95 static int t5325_probe(struct platform_device *pdev)
96 {
97 struct snd_soc_card *card = &t5325;
98 int ret;
99
100 card->dev = &pdev->dev;
101
102 ret = snd_soc_register_card(card);
103 if (ret)
104 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
105 ret);
106 return ret;
107 }
108
t5325_remove(struct platform_device * pdev)109 static int t5325_remove(struct platform_device *pdev)
110 {
111 struct snd_soc_card *card = platform_get_drvdata(pdev);
112
113 snd_soc_unregister_card(card);
114 return 0;
115 }
116
117 static struct platform_driver t5325_driver = {
118 .driver = {
119 .name = "t5325-audio",
120 .owner = THIS_MODULE,
121 },
122 .probe = t5325_probe,
123 .remove = t5325_remove,
124 };
125
126 module_platform_driver(t5325_driver);
127
128 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
129 MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
130 MODULE_LICENSE("GPL");
131 MODULE_ALIAS("platform:t5325-audio");
132