151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
/*
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* snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
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*
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* Copyright (C) 2008 Bluewater Systems Ltd
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* Author: Ryan Mallon <ryan@bluewatersys.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include "../codecs/tlv320aic23.h"
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#include "ep93xx-pcm.h"
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#include "ep93xx-i2s.h"
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#define CODEC_CLOCK 5644800
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static int snappercl15_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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int err;
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err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_IF |
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SND_SOC_DAIFMT_CBS_CFS);
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err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_IF |
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SND_SOC_DAIFMT_CBS_CFS);
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if (err)
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return err;
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err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
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SND_SOC_CLOCK_IN);
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if (err)
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return err;
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err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
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SND_SOC_CLOCK_OUT);
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if (err)
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return err;
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return 0;
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}
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static struct snd_soc_ops snappercl15_ops = {
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.hw_params = snappercl15_hw_params,
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};
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static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_LINE("Line In", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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{"Headphone Jack", NULL, "LHPOUT"},
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{"Headphone Jack", NULL, "RHPOUT"},
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{"LLINEIN", NULL, "Line In"},
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{"RLINEIN", NULL, "Line In"},
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{"MICIN", NULL, "Mic Jack"},
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};
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static int snappercl15_tlv320aic23_init(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
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ARRAY_SIZE(tlv320aic23_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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return 0;
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}
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static struct snd_soc_dai_link snappercl15_dai = {
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.name = "tlv320aic23",
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.stream_name = "AIC23",
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.cpu_dai = &ep93xx_i2s_dai,
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.codec_dai = &tlv320aic23_dai,
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.init = snappercl15_tlv320aic23_init,
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.ops = &snappercl15_ops,
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};
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static struct snd_soc_card snd_soc_snappercl15 = {
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.name = "Snapper CL15",
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.platform = &ep93xx_soc_platform,
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.dai_link = &snappercl15_dai,
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.num_links = 1,
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};
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static struct snd_soc_device snappercl15_snd_devdata = {
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.card = &snd_soc_snappercl15,
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.codec_dev = &soc_codec_dev_tlv320aic23,
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};
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static struct platform_device *snappercl15_snd_device;
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static int __init snappercl15_init(void)
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{
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int ret;
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if (!machine_is_snapper_cl15())
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return -ENODEV;
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ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97,
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EP93XX_SYSCON_I2SCLKDIV_ORIDE |
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EP93XX_SYSCON_I2SCLKDIV_SPOL);
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if (ret)
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return ret;
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snappercl15_snd_device = platform_device_alloc("soc-audio", -1);
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if (!snappercl15_snd_device)
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return -ENOMEM;
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platform_set_drvdata(snappercl15_snd_device, &snappercl15_snd_devdata);
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snappercl15_snd_devdata.dev = &snappercl15_snd_device->dev;
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ret = platform_device_add(snappercl15_snd_device);
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if (ret)
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platform_device_put(snappercl15_snd_device);
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return ret;
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}
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static void __exit snappercl15_exit(void)
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{
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platform_device_unregister(snappercl15_snd_device);
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ep93xx_i2s_release();
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}
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module_init(snappercl15_init);
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module_exit(snappercl15_exit);
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MODULE_AUTHOR("Ryan Mallon <ryan@bluewatersys.com>");
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MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
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MODULE_LICENSE("GPL");
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