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/*
* Copyright (C) 2008-2013 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/moduleparam.h>
#include <linux/device.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/fsl_devices.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <mach/audmux.h>
#include <mach/ssi.h>
#include "imx-ssi.h"
static struct imx_si4763_priv {
int sysclk;
int hw;
int active;
struct platform_device *pdev;
} card_priv;
static int imx_audmux_config(int slave, int master)
{
unsigned int ptcr, pdcr;
slave = slave - 1;
master = master - 1;
ptcr = MXC_AUDMUX_V2_PTCR_SYN |
MXC_AUDMUX_V2_PTCR_TFSDIR |
MXC_AUDMUX_V2_PTCR_TFSEL(slave) |
MXC_AUDMUX_V2_PTCR_TCLKDIR |
MXC_AUDMUX_V2_PTCR_TCSEL(slave);
pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(slave);
mxc_audmux_v2_configure_port(master, ptcr, pdcr);
ptcr = MXC_AUDMUX_V2_PTCR_SYN;
pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(master);
mxc_audmux_v2_configure_port(slave, ptcr, pdcr);
return 0;
}
static int imx_3stack_si4763_startup(struct snd_pcm_substream *substream)
{
struct imx_si4763_priv *priv = &card_priv;
priv->active++;
return 0;
}
static int imx_3stack_si4763_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;
unsigned int channels = params_channels(params);
struct imx_ssi *ssi_mode = snd_soc_dai_get_drvdata(cpu_dai);
int ret = 0;
u32 dai_format;
dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
ssi_mode->flags |= IMX_SSI_SYN;
/* set i.MX active slot mask */
snd_soc_dai_set_tdm_slot(cpu_dai,
channels == 1 ? 0xfffffffe : 0xfffffffc,
channels == 1 ? 0xfffffffe : 0xfffffffc,
2, 32);
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, dai_format);
if (ret < 0)
return ret;
/* set the SSI system clock as input (unused) */
snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, SND_SOC_CLOCK_IN);
snd_soc_dai_set_clkdiv(cpu_dai, IMX_SSI_TX_DIV_PM, 4);
snd_soc_dai_set_clkdiv(cpu_dai, IMX_SSI_TX_DIV_2, 1);
snd_soc_dai_set_clkdiv(cpu_dai, IMX_SSI_TX_DIV_PSR, 0);
return 0;
}
static void imx_3stack_si4763_shutdown(struct snd_pcm_substream *substream)
{
struct imx_si4763_priv *priv = &card_priv;
priv->active--;
}
/*
* imx_3stack bt DAI opserations.
*/
static struct snd_soc_ops imx_3stack_si4763_ops = {
.startup = imx_3stack_si4763_startup,
.hw_params = imx_3stack_si4763_hw_params,
.shutdown = imx_3stack_si4763_shutdown,
};
static struct snd_soc_dai_link imx_3stack_dai = {
.name = "imx-si4763",
.stream_name = "imx-si4763",
.codec_dai_name = "si4763",
.codec_name = "si4763.0",
.cpu_dai_name = "imx-ssi.1",
.platform_name = "imx-pcm-audio.1",
.ops = &imx_3stack_si4763_ops,
};
static struct snd_soc_card snd_soc_card_imx_3stack = {
.name = "imx-audio-si4763",
.dai_link = &imx_3stack_dai,
.num_links = 1,
};
static int __devinit imx_3stack_si4763_probe(struct platform_device *pdev)
{
struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
card_priv.pdev = pdev;
card_priv.sysclk = plat->sysclk;
imx_audmux_config(plat->src_port, plat->ext_port);
return 0;
}
static int __devexit imx_3stack_si4763_remove(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver imx_3stack_si4763_driver = {
.probe = imx_3stack_si4763_probe,
.remove = __devexit_p(imx_3stack_si4763_remove),
.driver = {
.name = "imx-tuner-si4763",
.owner = THIS_MODULE,
},
};
static struct platform_device *imx_3stack_snd_device;
static int __init imx_3stack_asoc_init(void)
{
int ret;
ret = platform_driver_register(&imx_3stack_si4763_driver);
if (ret < 0)
goto exit;
imx_3stack_snd_device = platform_device_alloc("soc-audio", 6);
if (!imx_3stack_snd_device)
goto err_device_alloc;
platform_set_drvdata(imx_3stack_snd_device, &snd_soc_card_imx_3stack);
ret = platform_device_add(imx_3stack_snd_device);
if (0 == ret)
goto exit;
platform_device_put(imx_3stack_snd_device);
err_device_alloc:
platform_driver_unregister(&imx_3stack_si4763_driver);
exit:
return ret;
}
static void __exit imx_3stack_asoc_exit(void)
{
platform_driver_unregister(&imx_3stack_si4763_driver);
platform_device_unregister(imx_3stack_snd_device);
}
module_init(imx_3stack_asoc_init);
module_exit(imx_3stack_asoc_exit);
/* Module information */
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("ALSA SoC si4763 imx");
MODULE_LICENSE("GPL");
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