Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
[sfrench/cifs-2.6.git] / sound / soc / blackfin / bf5xx-ad1836.c
1 /*
2  * File:         sound/soc/blackfin/bf5xx-ad1836.c
3  * Author:       Barry Song <Barry.Song@analog.com>
4  *
5  * Created:      Aug 4 2009
6  * Description:  Board driver for ad1836 sound chip
7  *
8  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  */
16
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/device.h>
20 #include <sound/core.h>
21 #include <sound/pcm.h>
22 #include <sound/soc.h>
23 #include <sound/pcm_params.h>
24
25 #include <asm/blackfin.h>
26 #include <asm/cacheflush.h>
27 #include <asm/irq.h>
28 #include <asm/dma.h>
29 #include <asm/portmux.h>
30
31 #include "../codecs/ad1836.h"
32
33 #include "bf5xx-tdm-pcm.h"
34 #include "bf5xx-tdm.h"
35
36 static struct snd_soc_card bf5xx_ad1836;
37
38 static int bf5xx_ad1836_hw_params(struct snd_pcm_substream *substream,
39         struct snd_pcm_hw_params *params)
40 {
41         struct snd_soc_pcm_runtime *rtd = substream->private_data;
42         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
44         unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
45         int ret = 0;
46         /* set cpu DAI configuration */
47         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
48                 SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
49         if (ret < 0)
50                 return ret;
51
52         /* set codec DAI configuration */
53         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
54                 SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
55         if (ret < 0)
56                 return ret;
57
58         /* set cpu DAI channel mapping */
59         ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
60                 channel_map, ARRAY_SIZE(channel_map), channel_map);
61         if (ret < 0)
62                 return ret;
63
64         return 0;
65 }
66
67 static struct snd_soc_ops bf5xx_ad1836_ops = {
68         .hw_params = bf5xx_ad1836_hw_params,
69 };
70
71 static struct snd_soc_dai_link bf5xx_ad1836_dai[] = {
72         {
73                 .name = "ad1836",
74                 .stream_name = "AD1836",
75                 .cpu_dai_name = "bfin-tdm.0",
76                 .codec_dai_name = "ad1836-hifi",
77                 .platform_name = "bfin-tdm-pcm-audio",
78                 .codec_name = "spi0.4",
79                 .ops = &bf5xx_ad1836_ops,
80         },
81         {
82                 .name = "ad1836",
83                 .stream_name = "AD1836",
84                 .cpu_dai_name = "bfin-tdm.1",
85                 .codec_dai_name = "ad1836-hifi",
86                 .platform_name = "bfin-tdm-pcm-audio",
87                 .codec_name = "spi0.4",
88                 .ops = &bf5xx_ad1836_ops,
89         },
90 };
91
92 static struct snd_soc_card bf5xx_ad1836 = {
93         .name = "bfin-ad1836",
94         .dai_link = &bf5xx_ad1836_dai[CONFIG_SND_BF5XX_SPORT_NUM],
95         .num_links = 1,
96 };
97
98 static struct platform_device *bfxx_ad1836_snd_device;
99
100 static int __init bf5xx_ad1836_init(void)
101 {
102         int ret;
103
104         bfxx_ad1836_snd_device = platform_device_alloc("soc-audio", -1);
105         if (!bfxx_ad1836_snd_device)
106                 return -ENOMEM;
107
108         platform_set_drvdata(bfxx_ad1836_snd_device, &bf5xx_ad1836);
109         ret = platform_device_add(bfxx_ad1836_snd_device);
110
111         if (ret)
112                 platform_device_put(bfxx_ad1836_snd_device);
113
114         return ret;
115 }
116
117 static void __exit bf5xx_ad1836_exit(void)
118 {
119         platform_device_unregister(bfxx_ad1836_snd_device);
120 }
121
122 module_init(bf5xx_ad1836_init);
123 module_exit(bf5xx_ad1836_exit);
124
125 /* Module information */
126 MODULE_AUTHOR("Barry Song");
127 MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
128 MODULE_LICENSE("GPL");
129