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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> | |
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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" | |
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32 | |
33 | #include "bf5xx-tdm-pcm.h" | |
34 | #include "bf5xx-tdm.h" | |
35 | ||
36 | static struct snd_soc_card bf5xx_ad1836; | |
37 | ||
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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; | |
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42 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
43 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
08db48f1 | 44 | unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7}; |
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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 | ||
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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 | ||
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64 | return 0; |
65 | } | |
66 | ||
67 | static struct snd_soc_ops bf5xx_ad1836_ops = { | |
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68 | .hw_params = bf5xx_ad1836_hw_params, |
69 | }; | |
70 | ||
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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 = "ad1836.0", | |
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 = "ad1836.0", | |
88 | .ops = &bf5xx_ad1836_ops, | |
89 | }, | |
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90 | }; |
91 | ||
92 | static struct snd_soc_card bf5xx_ad1836 = { | |
bfe4ee0a | 93 | .name = "bfin-ad1836", |
2c66cb99 | 94 | .dai_link = &bf5xx_ad1836_dai[CONFIG_SND_BF5XX_SPORT_NUM], |
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95 | .num_links = 1, |
96 | }; | |
97 | ||
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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 | ||
f0fba2ad | 108 | platform_set_drvdata(bfxx_ad1836_snd_device, &bf5xx_ad1836); |
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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 |