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1 | /* |
2 | * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module | |
3 | * | |
4 | * Copyright (C) 2008 Bluewater Systems Ltd | |
1c5454ee | 5 | * Author: Ryan Mallon |
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6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/platform_device.h> | |
15 | #include <sound/core.h> | |
16 | #include <sound/pcm.h> | |
17 | #include <sound/soc.h> | |
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18 | |
19 | #include <asm/mach-types.h> | |
20 | #include <mach/hardware.h> | |
21 | ||
22 | #include "../codecs/tlv320aic23.h" | |
23 | #include "ep93xx-pcm.h" | |
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24 | |
25 | #define CODEC_CLOCK 5644800 | |
26 | ||
27 | static int snappercl15_hw_params(struct snd_pcm_substream *substream, | |
28 | struct snd_pcm_hw_params *params) | |
29 | { | |
30 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
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31 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
32 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
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33 | int err; |
34 | ||
35 | err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
36 | SND_SOC_DAIFMT_NB_IF | | |
37 | SND_SOC_DAIFMT_CBS_CFS); | |
38 | ||
39 | err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
40 | SND_SOC_DAIFMT_NB_IF | | |
41 | SND_SOC_DAIFMT_CBS_CFS); | |
42 | if (err) | |
43 | return err; | |
44 | ||
45 | err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, | |
46 | SND_SOC_CLOCK_IN); | |
47 | if (err) | |
48 | return err; | |
49 | ||
50 | err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK, | |
51 | SND_SOC_CLOCK_OUT); | |
52 | if (err) | |
53 | return err; | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static struct snd_soc_ops snappercl15_ops = { | |
59 | .hw_params = snappercl15_hw_params, | |
60 | }; | |
61 | ||
62 | static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { | |
63 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
64 | SND_SOC_DAPM_LINE("Line In", NULL), | |
65 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
66 | }; | |
67 | ||
68 | static const struct snd_soc_dapm_route audio_map[] = { | |
69 | {"Headphone Jack", NULL, "LHPOUT"}, | |
70 | {"Headphone Jack", NULL, "RHPOUT"}, | |
71 | ||
72 | {"LLINEIN", NULL, "Line In"}, | |
73 | {"RLINEIN", NULL, "Line In"}, | |
74 | ||
75 | {"MICIN", NULL, "Mic Jack"}, | |
76 | }; | |
77 | ||
f0fba2ad | 78 | static int snappercl15_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd) |
315f7da6 | 79 | { |
f0fba2ad | 80 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 81 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
f0fba2ad | 82 | |
ce6120cc | 83 | snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets, |
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84 | ARRAY_SIZE(tlv320aic23_dapm_widgets)); |
85 | ||
ce6120cc | 86 | snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); |
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87 | return 0; |
88 | } | |
89 | ||
90 | static struct snd_soc_dai_link snappercl15_dai = { | |
91 | .name = "tlv320aic23", | |
92 | .stream_name = "AIC23", | |
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93 | .cpu_dai_name = "ep93xx-i2s", |
94 | .codec_dai_name = "tlv320aic23-hifi", | |
95 | .codec_name = "tlv320aic23-codec.0-001a", | |
96 | .platform_name = "ep93xx-pcm-audio", | |
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97 | .init = snappercl15_tlv320aic23_init, |
98 | .ops = &snappercl15_ops, | |
99 | }; | |
100 | ||
101 | static struct snd_soc_card snd_soc_snappercl15 = { | |
102 | .name = "Snapper CL15", | |
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103 | .dai_link = &snappercl15_dai, |
104 | .num_links = 1, | |
105 | }; | |
106 | ||
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107 | static struct platform_device *snappercl15_snd_device; |
108 | ||
109 | static int __init snappercl15_init(void) | |
110 | { | |
111 | int ret; | |
112 | ||
113 | if (!machine_is_snapper_cl15()) | |
114 | return -ENODEV; | |
115 | ||
116 | ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97, | |
117 | EP93XX_SYSCON_I2SCLKDIV_ORIDE | | |
118 | EP93XX_SYSCON_I2SCLKDIV_SPOL); | |
119 | if (ret) | |
120 | return ret; | |
121 | ||
122 | snappercl15_snd_device = platform_device_alloc("soc-audio", -1); | |
123 | if (!snappercl15_snd_device) | |
124 | return -ENOMEM; | |
125 | ||
f0fba2ad | 126 | platform_set_drvdata(snappercl15_snd_device, &snd_soc_snappercl15); |
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127 | ret = platform_device_add(snappercl15_snd_device); |
128 | if (ret) | |
129 | platform_device_put(snappercl15_snd_device); | |
130 | ||
131 | return ret; | |
132 | } | |
133 | ||
134 | static void __exit snappercl15_exit(void) | |
135 | { | |
136 | platform_device_unregister(snappercl15_snd_device); | |
137 | ep93xx_i2s_release(); | |
138 | } | |
139 | ||
140 | module_init(snappercl15_init); | |
141 | module_exit(snappercl15_exit); | |
142 | ||
1c5454ee | 143 | MODULE_AUTHOR("Ryan Mallon"); |
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144 | MODULE_DESCRIPTION("ALSA SoC Snapper CL15"); |
145 | MODULE_LICENSE("GPL"); | |
146 |