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[ALSA] soc - ln2440sbc ac97 support

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This patch adds ac97 support for ln2440sbc board from LittleChips.
This board is based on s3c2440 SoC + AC97 Realtek ALC650 codec.
Existing s3c2443 implementation is slightly modified because s3c2440
and s3c2443 have different AC97 interrupts.

Signed-off-by: Ivan Kuten <ivan.kuten@promwad.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Ivan Kuten 2007-10-26 14:53:47 +02:00 committed by Jaroslav Kysela
parent f651b50b9d
commit 040956fabb
5 changed files with 104 additions and 2 deletions
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8
sound/soc/s3c24xx/Kconfig
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@ -34,4 +34,12 @@ config SND_S3C24XX_SOC_SMDK2443_WM9710
Say Y if you want to add support for SoC audio on smdk2443
with the WM9710.
config SND_S3C24XX_SOC_LN2440SBC_ALC650
tristate "SoC AC97 Audio support for LN2440SBC - ALC650"
depends on SND_S3C24XX_SOC
select SND_S3C2443_SOC_AC97
select SND_SOC_AC97_CODEC
help
Say Y if you want to add support for SoC audio on ln2440sbc
with the ALC650.

2
sound/soc/s3c24xx/Makefile
View File

@ -10,6 +10,8 @@ obj-$(CONFIG_SND_S3C2443_SOC_AC97) += snd-soc-s3c2443-ac97.o
# S3C24XX Machine Support
snd-soc-neo1973-wm8753-objs := neo1973_wm8753.o
snd-soc-smdk2443-wm9710-objs := smdk2443_wm9710.o
snd-soc-ln2440sbc-alc650-objs := ln2440sbc_alc650.o
obj-$(CONFIG_SND_S3C24XX_SOC_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
obj-$(CONFIG_SND_S3C24XX_SOC_SMDK2443_WM9710) += snd-soc-smdk2443-wm9710.o
obj-$(CONFIG_SND_S3C24XX_SOC_LN2440SBC_ALC650) += snd-soc-ln2440sbc-alc650.o

86
sound/soc/s3c24xx/ln2440sbc_alc650.c Normal file
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@ -0,0 +1,86 @@
/*
* SoC audio for ln2440sbc
*
* Copyright 2007 KonekTel, a.s.
* Author: Ivan Kuten
* ivan.kuten@promwad.com
*
* Heavily based on smdk2443_wm9710.c
* Copyright 2007 Wolfson Microelectronics PLC.
* Author: Graeme Gregory
* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/device.h>
#include <sound/driver.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include "../codecs/ac97.h"
#include "s3c24xx-pcm.h"
#include "s3c24xx-ac97.h"
static struct snd_soc_machine ln2440sbc;
static struct snd_soc_dai_link ln2440sbc_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai = &s3c2443_ac97_dai[0],
.codec_dai = &ac97_dai,
},
};
static struct snd_soc_machine ln2440sbc = {
.name = "LN2440SBC",
.dai_link = ln2440sbc_dai,
.num_links = ARRAY_SIZE(ln2440sbc_dai),
};
static struct snd_soc_device ln2440sbc_snd_ac97_devdata = {
.machine = &ln2440sbc,
.platform = &s3c24xx_soc_platform,
.codec_dev = &soc_codec_dev_ac97,
};
static struct platform_device *ln2440sbc_snd_ac97_device;
static int __init ln2440sbc_init(void)
{
int ret;
ln2440sbc_snd_ac97_device = platform_device_alloc("soc-audio", -1);
if (!ln2440sbc_snd_ac97_device)
return -ENOMEM;
platform_set_drvdata(ln2440sbc_snd_ac97_device,
&ln2440sbc_snd_ac97_devdata);
ln2440sbc_snd_ac97_devdata.dev = &ln2440sbc_snd_ac97_device->dev;
ret = platform_device_add(ln2440sbc_snd_ac97_device);
if (ret)
platform_device_put(ln2440sbc_snd_ac97_device);
return ret;
}
static void __exit ln2440sbc_exit(void)
{
platform_device_unregister(ln2440sbc_snd_ac97_device);
}
module_init(ln2440sbc_init);
module_exit(ln2440sbc_exit);
/* Module information */
MODULE_AUTHOR("Ivan Kuten");
MODULE_DESCRIPTION("ALSA SoC ALC650 LN2440SBC");
MODULE_LICENSE("GPL");

4
sound/soc/s3c24xx/s3c2443-ac97.c
View File

@ -253,7 +253,7 @@ static int s3c2443_ac97_probe(struct platform_device *pdev)
ac_glbctrl |= S3C_AC97_GLBCTRL_TRANSFERDATAENABLE;
writel(ac_glbctrl, s3c24xx_ac97.regs + S3C_AC97_GLBCTRL);
ret = request_irq(IRQ_S3C2443_AC97, s3c2443_ac97_irq,
ret = request_irq(IRQ_S3C244x_AC97, s3c2443_ac97_irq,
IRQF_DISABLED, "AC97", NULL);
if (ret < 0) {
printk(KERN_ERR "s3c24xx-ac97: interrupt request failed.\n");
@ -266,7 +266,7 @@ static int s3c2443_ac97_probe(struct platform_device *pdev)
static void s3c2443_ac97_remove(struct platform_device *pdev)
{
free_irq(IRQ_S3C2443_AC97, NULL);
free_irq(IRQ_S3C244x_AC97, NULL);
clk_disable(s3c24xx_ac97.ac97_clk);
clk_put(s3c24xx_ac97.ac97_clk);
iounmap(s3c24xx_ac97.regs);

6
sound/soc/s3c24xx/s3c24xx-ac97.h
View File

@ -20,6 +20,12 @@
#define AC_CMD_ADDR(x) (x << 16)
#define AC_CMD_DATA(x) (x & 0xffff)
#ifdef CONFIG_CPU_S3C2440
#define IRQ_S3C244x_AC97 IRQ_S3C2440_AC97
#else
#define IRQ_S3C244x_AC97 IRQ_S3C2443_AC97
#endif
extern struct snd_soc_cpu_dai s3c2443_ac97_dai[];
#endif /*S3C24XXAC97_H_*/