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/*
* Copyright 2012 Freescale Semiconductor, Inc.
* Copyright 2012 Linaro Ltd.
*
* 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.h>
#include <linux/of_platform.h>
#include <linux/of_i2c.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include "../codecs/sgtl5000.h"
#include "imx-audmux.h"
#define DAI_NAME_SIZE 32
struct imx_sgtl5000_data {
struct snd_soc_dai_link dai;
struct snd_soc_card card;
char codec_dai_name[DAI_NAME_SIZE];
char platform_name[DAI_NAME_SIZE];
struct clk *codec_clk;
unsigned int clk_frequency;
};
static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct imx_sgtl5000_data *data = container_of(rtd->card,
struct imx_sgtl5000_data, card);
struct device *dev = rtd->card->dev;
int ret;
ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
data->clk_frequency, SND_SOC_CLOCK_IN);
if (ret) {
dev_err(dev, "could not set codec driver clock params\n");
return ret;
}
return 0;
}
static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_LINE("Line In Jack", NULL),
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Line Out Jack", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
};
static int __devinit imx_sgtl5000_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device_node *ssi_np, *codec_np;
struct platform_device *ssi_pdev;
struct i2c_client *codec_dev;
struct imx_sgtl5000_data *data;
int int_port, ext_port;
int 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;
}
/*
* The port numbering in the hardware manual starts at 1, while
* the audmux API expects it starts at 0.
*/
int_port--;
ext_port--;
ret = imx_audmux_v2_configure_port(int_port,
IMX_AUDMUX_V2_PTCR_SYN |
IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
IMX_AUDMUX_V2_PTCR_TFSDIR |
IMX_AUDMUX_V2_PTCR_TCLKDIR,
IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
if (ret) {
dev_err(&pdev->dev, "audmux internal port setup failed\n");
return ret;
}
ret = imx_audmux_v2_configure_port(ext_port,
IMX_AUDMUX_V2_PTCR_SYN,
IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
if (ret) {
dev_err(&pdev->dev, "audmux external port setup failed\n");
return ret;
}
ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
if (!ssi_np || !codec_np) {
dev_err(&pdev->dev, "phandle missing or invalid\n");
ret = -EINVAL;
goto fail;
}
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 fail;
}
codec_dev = of_find_i2c_device_by_node(codec_np);
if (!codec_dev) {
dev_err(&pdev->dev, "failed to find codec platform device\n");
return -EINVAL;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto fail;
}
data->codec_clk = clk_get(&codec_dev->dev, NULL);
if (IS_ERR(data->codec_clk)) {
/* assuming clock enabled by default */
data->codec_clk = NULL;
ret = of_property_read_u32(codec_np, "clock-frequency",
&data->clk_frequency);
if (ret) {
dev_err(&codec_dev->dev,
"clock-frequency missing or invalid\n");
goto fail;
}
} else {
data->clk_frequency = clk_get_rate(data->codec_clk);
clk_prepare_enable(data->codec_clk);
}
data->dai.name = "HiFi";
data->dai.stream_name = "HiFi";
data->dai.codec_dai_name = "sgtl5000";
data->dai.codec_of_node = codec_np;
data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
data->dai.platform_name = "imx-pcm-audio";
data->dai.init = &imx_sgtl5000_dai_init;
data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM;
data->card.dev = &pdev->dev;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto clk_fail;
ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
if (ret)
goto clk_fail;
data->card.num_links = 1;
data->card.dai_link = &data->dai;
data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
ret = snd_soc_register_card(&data->card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
goto clk_fail;
}
platform_set_drvdata(pdev, data);
clk_fail:
clk_put(data->codec_clk);
fail:
if (ssi_np)
of_node_put(ssi_np);
if (codec_np)
of_node_put(codec_np);
return ret;
}
static int __devexit imx_sgtl5000_remove(struct platform_device *pdev)
{
struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
if (data->codec_clk) {
clk_disable_unprepare(data->codec_clk);
clk_put(data->codec_clk);
}
snd_soc_unregister_card(&data->card);
return 0;
}
static const struct of_device_id imx_sgtl5000_dt_ids[] = {
{ .compatible = "fsl,imx-audio-sgtl5000", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
static struct platform_driver imx_sgtl5000_driver = {
.driver = {
.name = "imx-sgtl5000",
.owner = THIS_MODULE,
.of_match_table = imx_sgtl5000_dt_ids,
},
.probe = imx_sgtl5000_probe,
.remove = __devexit_p(imx_sgtl5000_remove),
};
module_platform_driver(imx_sgtl5000_driver);
MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-sgtl5000");
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