phycore-ac97.c

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/*
 * phycore-ac97.c  --  SoC audio for imx_phycore in AC97 mode
 *
 * Copyright 2009 Sascha Hauer, Pengutronix <[email protected]>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>

#include "imx-audmux.h"

static struct snd_soc_card imx_phycore;

static struct snd_soc_ops imx_phycore_hifi_ops = {
};

static struct snd_soc_dai_link imx_phycore_dai_ac97[] = {
    {
        .name       = "HiFi",
        .stream_name    = "HiFi",
        .codec_dai_name     = "wm9712-hifi",
        .codec_name = "wm9712-codec",
        .cpu_dai_name   = "imx-ssi.0",
        .platform_name  = "imx-fiq-pcm-audio.0",
        .ops        = &imx_phycore_hifi_ops,
    },
};

static struct snd_soc_card imx_phycore = {
    .name       = "PhyCORE-ac97-audio",
    .owner      = THIS_MODULE,
    .dai_link   = imx_phycore_dai_ac97,
    .num_links  = ARRAY_SIZE(imx_phycore_dai_ac97),
};

static struct platform_device *imx_phycore_snd_ac97_device;
static struct platform_device *imx_phycore_snd_device;

static int __init imx_phycore_init(void)
{
    int ret;

    if (machine_is_pca100()) {
        imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
            IMX_AUDMUX_V1_PCR_SYN | /* 4wire mode */
            IMX_AUDMUX_V1_PCR_TFCSEL(3) |
            IMX_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
            IMX_AUDMUX_V1_PCR_RXDSEL(3));
        imx_audmux_v1_configure_port(3,
            IMX_AUDMUX_V1_PCR_SYN | /* 4wire mode */
            IMX_AUDMUX_V1_PCR_TFCSEL(0) |
            IMX_AUDMUX_V1_PCR_TFSDIR |
            IMX_AUDMUX_V1_PCR_RXDSEL(0));
    } else if (machine_is_pcm043()) {
        imx_audmux_v2_configure_port(3,
            IMX_AUDMUX_V2_PTCR_SYN | /* 4wire mode */
            IMX_AUDMUX_V2_PTCR_TFSEL(0) |
            IMX_AUDMUX_V2_PTCR_TFSDIR,
            IMX_AUDMUX_V2_PDCR_RXDSEL(0));
        imx_audmux_v2_configure_port(0,
            IMX_AUDMUX_V2_PTCR_SYN | /* 4wire mode */
            IMX_AUDMUX_V2_PTCR_TCSEL(3) |
            IMX_AUDMUX_V2_PTCR_TCLKDIR, /* clock is output */
            IMX_AUDMUX_V2_PDCR_RXDSEL(3));
    } else {
        /* return happy. We might run on a totally different machine */
        return 0;
    }

    imx_phycore_snd_ac97_device = platform_device_alloc("soc-audio", -1);
    if (!imx_phycore_snd_ac97_device)
        return -ENOMEM;

    platform_set_drvdata(imx_phycore_snd_ac97_device, &imx_phycore);
    ret = platform_device_add(imx_phycore_snd_ac97_device);
    if (ret)
        goto fail1;

    imx_phycore_snd_device = platform_device_alloc("wm9712-codec", -1);
    if (!imx_phycore_snd_device) {
        ret = -ENOMEM;
        goto fail2;
    }
    ret = platform_device_add(imx_phycore_snd_device);

    if (ret) {
        printk(KERN_ERR "ASoC: Platform device allocation failed\n");
        goto fail3;
    }

    return 0;

fail3:
    platform_device_put(imx_phycore_snd_device);
fail2:
    platform_device_del(imx_phycore_snd_ac97_device);
fail1:
    platform_device_put(imx_phycore_snd_ac97_device);
    return ret;
}

static void __exit imx_phycore_exit(void)
{
    platform_device_unregister(imx_phycore_snd_device);
    platform_device_unregister(imx_phycore_snd_ac97_device);
}

late_initcall(imx_phycore_init);
module_exit(imx_phycore_exit);

MODULE_AUTHOR("Sascha Hauer <[email protected]>");
MODULE_DESCRIPTION("PhyCORE ALSA SoC driver");
MODULE_LICENSE("GPL");