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/*
* Copyright (C) 2008-2016 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* 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:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/i2c.h>
#include <sound/soc.h>
#include "imx-audmux.h"
static int imx_audmux_config(int slave, int master)
{
unsigned int ptcr, pdcr;
slave = slave - 1;
master = master - 1;
ptcr = IMX_AUDMUX_V2_PTCR_SYN |
IMX_AUDMUX_V2_PTCR_TFSDIR |
IMX_AUDMUX_V2_PTCR_TFSEL(slave) |
IMX_AUDMUX_V2_PTCR_TCLKDIR |
IMX_AUDMUX_V2_PTCR_TCSEL(slave);
pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(slave);
imx_audmux_v2_configure_port(master, ptcr, pdcr);
/*
* According to RM, RCLKDIR and SYN should not be changed at same time.
* So separate to two step for configuring this port.
*/
ptcr |= IMX_AUDMUX_V2_PTCR_RFSDIR |
IMX_AUDMUX_V2_PTCR_RFSEL(slave) |
IMX_AUDMUX_V2_PTCR_RCLKDIR |
IMX_AUDMUX_V2_PTCR_RCSEL(slave);
imx_audmux_v2_configure_port(master, ptcr, pdcr);
ptcr = IMX_AUDMUX_V2_PTCR_SYN;
pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(master);
imx_audmux_v2_configure_port(slave, ptcr, pdcr);
return 0;
}
static int imx_si476x_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;
int ret = 0;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret) {
dev_err(cpu_dai->dev, "failed to set dai fmt\n");
return ret;
}
return ret;
}
static struct snd_soc_ops imx_si476x_ops = {
.hw_params = imx_si476x_hw_params,
};
SND_SOC_DAILINK_DEFS(hifi,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "si476x-codec")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link imx_dai = {
.name = "imx-si476x",
.stream_name = "imx-si476x",
.ops = &imx_si476x_ops,
SND_SOC_DAILINK_REG(hifi),
};
static struct snd_soc_card snd_soc_card_imx_3stack = {
.name = "imx-audio-si476x",
.dai_link = &imx_dai,
.num_links = 1,
.owner = THIS_MODULE,
};
static int imx_si476x_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &snd_soc_card_imx_3stack;
struct device_node *ssi_np, *np = pdev->dev.of_node;
struct platform_device *ssi_pdev;
struct i2c_client *fm_dev;
struct device_node *fm_np = NULL;
int int_port, ext_port, ret;
ret = of_property_read_u32(np, "mux-int-port", &int_port);
if (ret) {
dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
return ret;
}
ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
if (ret) {
dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
return ret;
}
imx_audmux_config(int_port, ext_port);
ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
if (!ssi_np) {
dev_err(&pdev->dev, "phandle missing or invalid\n");
return -EINVAL;
}
ssi_pdev = of_find_device_by_node(ssi_np);
if (!ssi_pdev) {
dev_err(&pdev->dev, "failed to find SSI platform device\n");
ret = -EINVAL;
goto end;
}
fm_np = of_parse_phandle(pdev->dev.of_node, "fm-controller", 0);
if (!fm_np) {
dev_err(&pdev->dev, "phandle missing or invalid\n");
ret = -EINVAL;
goto end;
}
fm_dev = of_find_i2c_device_by_node(fm_np->parent);
if (!fm_dev || !fm_dev->dev.driver) {
dev_err(&pdev->dev, "failed to find FM platform device\n");
ret = -EINVAL;
goto end;
}
card->dev = &pdev->dev;
card->dai_link->cpus->dai_name = dev_name(&ssi_pdev->dev);
card->dai_link->platforms->of_node = ssi_np;
card->dai_link->codecs->of_node = fm_np;
platform_set_drvdata(pdev, card);
ret = snd_soc_register_card(card);
if (ret)
dev_err(&pdev->dev, "Failed to register card: %d\n", ret);
end:
if (ssi_np)
of_node_put(ssi_np);
if (fm_np)
of_node_put(fm_np);
return ret;
}
static int imx_si476x_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = &snd_soc_card_imx_3stack;
snd_soc_unregister_card(card);
return 0;
}
static const struct of_device_id imx_si476x_dt_ids[] = {
{ .compatible = "fsl,imx-audio-si476x", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_si476x_dt_ids);
static struct platform_driver imx_si476x_driver = {
.driver = {
.name = "imx-tuner-si476x",
.pm = &snd_soc_pm_ops,
.of_match_table = imx_si476x_dt_ids,
},
.probe = imx_si476x_probe,
.remove = imx_si476x_remove,
};
module_platform_driver(imx_si476x_driver);
/* Module information */
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("ALSA SoC i.MX si476x");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:imx-tuner-si476x");
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