140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
/* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/clk.h>
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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/initval.h>
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#include <sound/soc.h>
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#include <sound/dai.h>
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static int msm_cpu_dai_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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uint32_t dma_ch = dai->id;
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int ret = 0;
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pr_debug("%s\n", __func__);
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ret = dai_open(dma_ch);
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return ret;
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}
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static void msm_cpu_dai_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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uint32_t dma_ch = dai->id;
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pr_debug("%s\n", __func__);
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dai_close(dma_ch);
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}
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static int msm_cpu_dai_trigger(struct snd_pcm_substream *substream, int cmd,
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struct snd_soc_dai *dai)
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{
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pr_debug("%s\n", __func__);
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return 0;
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}
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static int msm_cpu_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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{
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uint32_t dma_ch = dai->id;
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBS_CFS:
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dai_set_master_mode(dma_ch, 1); /* CPU is master */
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break;
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case SND_SOC_DAIFMT_CBM_CFM:
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dai_set_master_mode(dma_ch, 0); /* CPU is slave */
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static struct snd_soc_dai_ops msm_cpu_dai_ops = {
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.startup = msm_cpu_dai_startup,
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.shutdown = msm_cpu_dai_shutdown,
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.trigger = msm_cpu_dai_trigger,
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.set_fmt = msm_cpu_dai_fmt,
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};
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#define MSM_DAI_SPEAKER_BUILDER(link_id) \
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{ \
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.name = "msm-speaker-dai-"#link_id, \
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.id = (link_id), \
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.playback = { \
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.rates = SNDRV_PCM_RATE_8000_96000, \
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.formats = SNDRV_PCM_FMTBIT_S16_LE, \
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.channels_min = 1, \
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.channels_max = 2, \
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.rate_max = 96000, \
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.rate_min = 8000, \
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}, \
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.ops = &msm_cpu_dai_ops, \
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}
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#define MSM_DAI_MIC_BUILDER(link_id) \
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{ \
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.name = "msm-mic-dai-"#link_id, \
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.id = (link_id), \
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.capture = { \
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.rates = SNDRV_PCM_RATE_8000_96000, \
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.formats = SNDRV_PCM_FMTBIT_S16_LE, \
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.rate_min = 8000, \
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.rate_max = 96000, \
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.channels_min = 1, \
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.channels_max = 2, \
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}, \
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.ops = &msm_cpu_dai_ops, \
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}
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struct snd_soc_dai msm_cpu_dai[] = {
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MSM_DAI_SPEAKER_BUILDER(0),
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MSM_DAI_SPEAKER_BUILDER(1),
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MSM_DAI_SPEAKER_BUILDER(2),
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MSM_DAI_SPEAKER_BUILDER(3),
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MSM_DAI_SPEAKER_BUILDER(4),
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MSM_DAI_MIC_BUILDER(5),
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MSM_DAI_MIC_BUILDER(6),
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MSM_DAI_MIC_BUILDER(7),
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};
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EXPORT_SYMBOL_GPL(msm_cpu_dai);
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static int __init msm_cpu_dai_init(void)
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{
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return snd_soc_register_dais(msm_cpu_dai, ARRAY_SIZE(msm_cpu_dai));
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}
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module_init(msm_cpu_dai_init);
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static void __exit msm_cpu_dai_exit(void)
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{
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snd_soc_unregister_dais(msm_cpu_dai, ARRAY_SIZE(msm_cpu_dai));
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}
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module_exit(msm_cpu_dai_exit);
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/* Module information */
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MODULE_DESCRIPTION("MSM CPU DAI driver");
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MODULE_LICENSE("GPL v2");
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