2 * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
4 * Copyright (C) 2008 Bluewater Systems Ltd
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.
14 #include <linux/platform_device.h>
15 #include <sound/core.h>
16 #include <sound/pcm.h>
17 #include <sound/soc.h>
19 #include <asm/mach-types.h>
20 #include <mach/hardware.h>
22 #include "../codecs/tlv320aic23.h"
23 #include "ep93xx-pcm.h"
25 #define CODEC_CLOCK 5644800
27 static int snappercl15_hw_params(struct snd_pcm_substream *substream,
28 struct snd_pcm_hw_params *params)
30 struct snd_soc_pcm_runtime *rtd = substream->private_data;
31 struct snd_soc_dai *codec_dai = rtd->codec_dai;
32 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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);
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);
45 err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
50 err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
58 static struct snd_soc_ops snappercl15_ops = {
59 .hw_params = snappercl15_hw_params,
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),
68 static const struct snd_soc_dapm_route audio_map[] = {
69 {"Headphone Jack", NULL, "LHPOUT"},
70 {"Headphone Jack", NULL, "RHPOUT"},
72 {"LLINEIN", NULL, "Line In"},
73 {"RLINEIN", NULL, "Line In"},
75 {"MICIN", NULL, "Mic Jack"},
78 static int snappercl15_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
80 struct snd_soc_codec *codec = rtd->codec;
81 struct snd_soc_dapm_context *dapm = &codec->dapm;
83 snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
84 ARRAY_SIZE(tlv320aic23_dapm_widgets));
86 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
90 static struct snd_soc_dai_link snappercl15_dai = {
91 .name = "tlv320aic23",
92 .stream_name = "AIC23",
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",
97 .init = snappercl15_tlv320aic23_init,
98 .ops = &snappercl15_ops,
101 static struct snd_soc_card snd_soc_snappercl15 = {
102 .name = "Snapper CL15",
103 .dai_link = &snappercl15_dai,
107 static int __devinit snappercl15_probe(struct platform_device *pdev)
109 struct snd_soc_card *card = &snd_soc_snappercl15;
112 ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97,
113 EP93XX_SYSCON_I2SCLKDIV_ORIDE |
114 EP93XX_SYSCON_I2SCLKDIV_SPOL);
118 card->dev = &pdev->dev;
120 ret = snd_soc_register_card(card);
122 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
124 ep93xx_i2s_release();
130 static int __devexit snappercl15_remove(struct platform_device *pdev)
132 struct snd_soc_card *card = platform_get_drvdata(pdev);
134 snd_soc_unregister_card(card);
135 ep93xx_i2s_release();
140 static struct platform_driver snappercl15_driver = {
142 .name = "snappercl15-audio",
143 .owner = THIS_MODULE,
145 .probe = snappercl15_probe,
146 .remove = __devexit_p(snappercl15_remove),
149 static int __init snappercl15_init(void)
151 return platform_driver_register(&snappercl15_driver);
154 static void __exit snappercl15_exit(void)
156 platform_driver_unregister(&snappercl15_driver);
159 module_init(snappercl15_init);
160 module_exit(snappercl15_exit);
162 MODULE_AUTHOR("Ryan Mallon");
163 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
164 MODULE_LICENSE("GPL");
165 MODULE_ALIAS("platform:snappercl15-audio");