mirror of https://gitee.com/openkylin/linux.git
150 lines
3.7 KiB
C
150 lines
3.7 KiB
C
/*
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* arndale_rt5631.c
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*
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* Copyright (c) 2014, Insignal Co., Ltd.
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*
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* Author: Claude <claude@insginal.co.kr>
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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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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "i2s.h"
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static int arndale_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 *cpu_dai = rtd->cpu_dai;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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int rfs, ret;
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unsigned long rclk;
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rfs = 256;
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rclk = params_rate(params) * rfs;
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ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
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0, SND_SOC_CLOCK_OUT);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
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0, SND_SOC_CLOCK_OUT);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops arndale_ops = {
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.hw_params = arndale_hw_params,
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};
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static struct snd_soc_dai_link arndale_rt5631_dai[] = {
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{
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.name = "RT5631 HiFi",
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.stream_name = "Primary",
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.codec_dai_name = "rt5631-hifi",
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.dai_fmt = SND_SOC_DAIFMT_I2S
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| SND_SOC_DAIFMT_NB_NF
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| SND_SOC_DAIFMT_CBS_CFS,
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.ops = &arndale_ops,
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},
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};
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static struct snd_soc_card arndale_rt5631 = {
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.name = "Arndale RT5631",
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.dai_link = arndale_rt5631_dai,
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.num_links = ARRAY_SIZE(arndale_rt5631_dai),
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};
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static int arndale_audio_probe(struct platform_device *pdev)
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{
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int n, ret;
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_card *card = &arndale_rt5631;
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card->dev = &pdev->dev;
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for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) {
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if (!arndale_rt5631_dai[n].cpu_dai_name) {
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arndale_rt5631_dai[n].cpu_of_node = of_parse_phandle(np,
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"samsung,audio-cpu", n);
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if (!arndale_rt5631_dai[n].cpu_of_node) {
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dev_err(&pdev->dev,
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"Property 'samsung,audio-cpu' missing or invalid\n");
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return -EINVAL;
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}
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}
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if (!arndale_rt5631_dai[n].platform_name)
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arndale_rt5631_dai[n].platform_of_node =
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arndale_rt5631_dai[n].cpu_of_node;
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arndale_rt5631_dai[n].codec_name = NULL;
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arndale_rt5631_dai[n].codec_of_node = of_parse_phandle(np,
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"samsung,audio-codec", n);
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if (!arndale_rt5631_dai[0].codec_of_node) {
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dev_err(&pdev->dev,
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"Property 'samsung,audio-codec' missing or invalid\n");
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return -EINVAL;
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}
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}
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ret = devm_snd_soc_register_card(card->dev, card);
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if (ret)
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dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
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return ret;
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}
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static int arndale_audio_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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snd_soc_unregister_card(card);
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return 0;
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}
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static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
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{ .compatible = "samsung,arndale-rt5631", },
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{ .compatible = "samsung,arndale-alc5631", },
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{},
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};
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MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match);
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static struct platform_driver arndale_audio_driver = {
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.driver = {
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.name = "arndale-audio",
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.pm = &snd_soc_pm_ops,
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.of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
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},
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.probe = arndale_audio_probe,
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.remove = arndale_audio_remove,
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};
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module_platform_driver(arndale_audio_driver);
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MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
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MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
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MODULE_LICENSE("GPL");
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