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/*
* Freescale ALSA SoC Audio using SGTL5000 as codec.
*
* Copyright 2012-2014 Freescale Semiconductor, Inc.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
*/
#include <linux/clk.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include "../codecs/sgtl5000.h"
#include "fsl_sai.h"
static unsigned int sysclk_rate;
static int vf610_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
{
int ret;
struct device *dev = rtd->card->dev;
ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
sysclk_rate, SND_SOC_CLOCK_IN);
if (ret) {
dev_err(dev, "could not set codec driver clock params :%d\n",
ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, FSL_SAI_CLK_BUS,
sysclk_rate, SND_SOC_CLOCK_OUT);
if (ret) {
dev_err(dev, "could not set cpu dai driver clock params :%d\n",
ret);
return ret;
}
return 0;
}
static struct snd_soc_dai_link vf610_sgtl5000_dai = {
.name = "HiFi",
.stream_name = "HiFi",
.codec_dai_name = "sgtl5000",
.init = &vf610_sgtl5000_dai_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
};
static const struct snd_soc_dapm_widget vf610_sgtl5000_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Microphone Jack", NULL),
SND_SOC_DAPM_LINE("Line In Jack", NULL),
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Speaker Ext", NULL),
};
static struct snd_soc_card vf610_sgtl5000_card = {
.owner = THIS_MODULE,
.num_links = 1,
.dai_link = &vf610_sgtl5000_dai,
.dapm_widgets = vf610_sgtl5000_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(vf610_sgtl5000_dapm_widgets),
};
static int vf610_sgtl5000_parse_dt(struct platform_device *pdev)
{
int ret;
struct device_node *sai_np, *codec_np;
struct clk *codec_clk;
struct i2c_client *codec_dev;
struct device_node *np = pdev->dev.of_node;
ret = snd_soc_of_parse_card_name(&vf610_sgtl5000_card,
"simple-audio-card,name");
if (ret)
return ret;
ret = snd_soc_of_parse_audio_routing(&vf610_sgtl5000_card,
"simple-audio-card,routing");
if (ret)
return ret;
sai_np = of_parse_phandle(np, "simple-audio-card,cpu", 0);
if (!sai_np) {
dev_err(&pdev->dev, "parsing \"saif-controller\" error\n");
return -EINVAL;
}
vf610_sgtl5000_dai.cpu_of_node = sai_np;
vf610_sgtl5000_dai.platform_of_node = sai_np;
codec_np = of_parse_phandle(np, "simple-audio-card,codec", 0);
if (!codec_np) {
dev_err(&pdev->dev, "parsing \"audio-codec\" error\n");
ret = -EINVAL;
goto sai_np_fail;
}
vf610_sgtl5000_dai.codec_of_node = codec_np;
codec_dev = of_find_i2c_device_by_node(codec_np);
if (!codec_dev) {
dev_err(&pdev->dev, "failed to find codec platform device\n");
ret = PTR_ERR(codec_dev);
goto codec_np_fail;
}
codec_clk = devm_clk_get(&codec_dev->dev, NULL);
if (IS_ERR(codec_clk)) {
dev_err(&pdev->dev, "failed to get codec clock\n");
ret = PTR_ERR(codec_clk);
goto codec_np_fail;
}
sysclk_rate = clk_get_rate(codec_clk);
codec_np_fail:
of_node_put(codec_np);
sai_np_fail:
of_node_put(sai_np);
return ret;
}
static int vf610_sgtl5000_probe(struct platform_device *pdev)
{
int ret;
vf610_sgtl5000_card.dev = &pdev->dev;
ret = vf610_sgtl5000_parse_dt(pdev);
if (ret) {
dev_err(&pdev->dev, "parse sgtl5000 device tree failed :%d\n",
ret);
return ret;
}
ret = snd_soc_register_card(&vf610_sgtl5000_card);
if (ret) {
dev_err(&pdev->dev, "TWR-AUDIO-SGTL board required :%d\n",
ret);
return ret;
}
return 0;
}
static const struct of_device_id vf610_sgtl5000_dt_ids[] = {
{ .compatible = "fsl,vf610-sgtl5000", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, vf610_sgtl5000_dt_ids);
static struct platform_driver vf610_sgtl5000_driver = {
.probe = vf610_sgtl5000_probe,
.driver = {
.name = "vf610-sgtl5000",
.owner = THIS_MODULE,
.of_match_table = vf610_sgtl5000_dt_ids,
},
};
module_platform_driver(vf610_sgtl5000_driver);
MODULE_DESCRIPTION("Freescale SGTL5000 ASoC driver");
MODULE_LICENSE("GPL");
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