/*
* Sample Au12x0/Au1550 PSC AC97 sound machine.
*
* Copyright (c) 2007-2008 Manuel Lauss <mano@roarinelk.homelinux.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms outlined in the file COPYING at the root of this
* source archive.
*
* This is a very generic AC97 sound machine driver for boards which
* have (AC97) audio at PSC1 (e.g. DB1200 demoboards).
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include "../codecs/ac97.h"
#include "psc.h"
static int au1xpsc_sample_ac97_init(struct snd_soc_codec *codec)
{
snd_soc_dapm_sync(codec);
return 0;
}
static struct snd_soc_dai_link au1xpsc_sample_ac97_dai = {
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai = &au1xpsc_ac97_dai, /* see psc-ac97.c */
.codec_dai = &ac97_dai, /* see codecs/ac97.c */
.init = au1xpsc_sample_ac97_init,
.ops = NULL,
};
static struct snd_soc_machine au1xpsc_sample_ac97_machine = {
.name = "Au1xxx PSC AC97 Audio",
.dai_link = &au1xpsc_sample_ac97_dai,
.num_links = 1,
};
static struct snd_soc_device au1xpsc_sample_ac97_devdata = {
.machine = &au1xpsc_sample_ac97_machine,
.platform = &au1xpsc_soc_platform, /* see dbdma2.c */
.codec_dev = &soc_codec_dev_ac97,
};
static struct resource au1xpsc_psc1_res[] = {
[0] = {
.start = CPHYSADDR(PSC1_BASE_ADDR),
.end = CPHYSADDR(PSC1_BASE_ADDR) + 0x000fffff,
.flags = IORESOURCE_MEM,
},
[1] = {
#ifdef CONFIG_SOC_AU1200
.start = AU1200_PSC1_INT,
.end = AU1200_PSC1_INT,
#elif defined(CONFIG_SOC_AU1550)
.start = AU1550_PSC1_INT,
.end = AU1550_PSC1_INT,
#endif
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = DSCR_CMD0_PSC1_TX,
.end = DSCR_CMD0_PSC1_TX,
.flags = IORESOURCE_DMA,
},
[3] = {
.start = DSCR_CMD0_PSC1_RX,
.end = DSCR_CMD0_PSC1_RX,
.flags = IORESOURCE_DMA,
},
};
static struct platform_device *au1xpsc_sample_ac97_dev;
static int __init au1xpsc_sample_ac97_load(void)
{
int ret;
#ifdef CONFIG_SOC_AU1200
unsigned long io;
/* modify sys_pinfunc for AC97 on PSC1 */
io = au_readl(SYS_PINFUNC);
io |= SYS_PINFUNC_P1C;
io &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B);
au_writel(io, SYS_PINFUNC);
au_sync();
#endif
ret = -ENOMEM;
/* setup PSC clock source for AC97 part: external clock provided
* by codec. The psc-ac97.c driver depends on this setting!
*/
au_writel(PSC_SEL_CLK_SERCLK, PSC1_BASE_ADDR + PSC_SEL_OFFSET);
au_sync();
au1xpsc_sample_ac97_dev = platform_device_alloc("soc-audio", -1);
if (!au1xpsc_sample_ac97_dev)
goto out;
au1xpsc_sample_ac97_dev->resource =
kmemdup(au1xpsc_psc1_res, sizeof(struct resource) *
ARRAY_SIZE(au1xpsc_psc1_res), GFP_KERNEL);
au1xpsc_sample_ac97_dev->num_resources = ARRAY_SIZE(au1xpsc_psc1_res);
au1xpsc_sample_ac97_dev->id = 1;
platform_set_drvdata(au1xpsc_sample_ac97_dev,
&au1xpsc_sample_ac97_devdata);
au1xpsc_sample_ac97_devdata.dev = &au1xpsc_sample_ac97_dev->dev;
ret = platform_device_add(au1xpsc_sample_ac97_dev);
if (ret) {
platform_device_put(au1xpsc_sample_ac97_dev);
au1xpsc_sample_ac97_dev = NULL;
}
out:
return ret;
}
static void __exit au1xpsc_sample_ac97_exit(void)
{
platform_device_unregister(au1xpsc_sample_ac97_dev);
}
module_init(au1xpsc_sample_ac97_load);
module_exit(au1xpsc_sample_ac97_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Au1xxx PSC sample AC97 machine");
MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");
