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// SPDX-License-Identifier: GPL-2.0+
//
// Copyright (c) 2014, Insignal Co., Ltd.
//
// Author: Claude <claude@insginal.co.kr>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "i2s.h"
static int arndale_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
int rfs, ret;
unsigned long rclk;
rfs = 256;
rclk = params_rate(params) * rfs;
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
0, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
0, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops arndale_ops = {
.hw_params = arndale_hw_params,
};
SND_SOC_DAILINK_DEFS(rt5631_hifi,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-hifi")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link arndale_rt5631_dai[] = {
{
.name = "RT5631 HiFi",
.stream_name = "Primary",
.dai_fmt = SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS,
.ops = &arndale_ops,
SND_SOC_DAILINK_REG(rt5631_hifi),
},
};
static struct snd_soc_card arndale_rt5631 = {
.name = "Arndale RT5631",
.owner = THIS_MODULE,
.dai_link = arndale_rt5631_dai,
.num_links = ARRAY_SIZE(arndale_rt5631_dai),
};
static void arndale_put_of_nodes(struct snd_soc_card *card)
{
struct snd_soc_dai_link *dai_link;
int i;
for_each_card_prelinks(card, i, dai_link) {
of_node_put(dai_link->cpus->of_node);
of_node_put(dai_link->codecs->of_node);
}
}
static int arndale_audio_probe(struct platform_device *pdev)
{
int n, ret;
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &arndale_rt5631;
card->dev = &pdev->dev;
for (n = 0; np && n < ARRAY_SIZE(arndale_rt5631_dai); n++) {
if (!arndale_rt5631_dai[n].cpus->dai_name) {
arndale_rt5631_dai[n].cpus->of_node = of_parse_phandle(np,
"samsung,audio-cpu", n);
if (!arndale_rt5631_dai[n].cpus->of_node) {
dev_err(&pdev->dev,
"Property 'samsung,audio-cpu' missing or invalid\n");
return -EINVAL;
}
}
if (!arndale_rt5631_dai[n].platforms->name)
arndale_rt5631_dai[n].platforms->of_node =
arndale_rt5631_dai[n].cpus->of_node;
arndale_rt5631_dai[n].codecs->name = NULL;
arndale_rt5631_dai[n].codecs->of_node = of_parse_phandle(np,
"samsung,audio-codec", n);
if (!arndale_rt5631_dai[0].codecs->of_node) {
dev_err(&pdev->dev,
"Property 'samsung,audio-codec' missing or invalid\n");
ret = -EINVAL;
goto err_put_of_nodes;
}
}
ret = devm_snd_soc_register_card(card->dev, card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
goto err_put_of_nodes;
}
return 0;
err_put_of_nodes:
arndale_put_of_nodes(card);
return ret;
}
static int arndale_audio_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
arndale_put_of_nodes(card);
return 0;
}
static const struct of_device_id samsung_arndale_rt5631_of_match[] __maybe_unused = {
{ .compatible = "samsung,arndale-rt5631", },
{ .compatible = "samsung,arndale-alc5631", },
{},
};
MODULE_DEVICE_TABLE(of, samsung_arndale_rt5631_of_match);
static struct platform_driver arndale_audio_driver = {
.driver = {
.name = "arndale-audio",
.pm = &snd_soc_pm_ops,
.of_match_table = of_match_ptr(samsung_arndale_rt5631_of_match),
},
.probe = arndale_audio_probe,
.remove = arndale_audio_remove,
};
module_platform_driver(arndale_audio_driver);
MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
MODULE_LICENSE("GPL");
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