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MIPS/SOUND: Alchemy: DB1200 AC97+I2S audio support. 

Machine driver for DB1200 AC97 and I2S audio systems, intended as a proper
reference asoc machine for Alchemy-based systems.  AC97/I2S can be selected
at boot time by setting switch S6.7.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: alsa-devel@alsa-project.org
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Manuel Lauss 2009-11-02 21:21:44 +01:00 committed by Ralf Baechle
parent 63323ec54a
commit 05ae323180
5 changed files with 200 additions and 150 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
arch/mips/alchemy/devboards/db1200/platform.c
View File

@ -399,12 +399,43 @@ static struct platform_device db1200_spi_dev = {
.resource = au1200_psc0_res,
};
static struct resource au1200_psc1_res[] = {
[0] = {
.start = PSC1_PHYS_ADDR,
.end = PSC1_PHYS_ADDR + 0x000fffff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AU1200_PSC1_INT,
.end = AU1200_PSC1_INT,
.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 db1200_audio_dev = {
/* name assigned later based on switch setting */
.id = 1, /* PSC ID */
.num_resources = ARRAY_SIZE(au1200_psc1_res),
.resource = au1200_psc1_res,
};
static struct platform_device *db1200_devs[] __initdata = {
NULL, /* PSC0, selected by S6.8 */
&db1200_ide_dev,
&db1200_eth_dev,
&db1200_rtc_dev,
&db1200_nand_dev,
&db1200_audio_dev,
};
static int __init db1200_dev_init(void)
@ -419,6 +450,7 @@ static int __init db1200_dev_init(void)
ARRAY_SIZE(db1200_i2c_devs));
/* SWITCHES: S6.8 I2C/SPI selector (OFF=I2C ON=SPI)
* S6.7 AC97/I2S selector (OFF=AC97 ON=I2S)
*/
/* NOTE: GPIO215 controls OTG VBUS supply. In SPI mode however
@ -456,6 +488,25 @@ static int __init db1200_dev_init(void)
__raw_writel(pfc, (void __iomem *)SYS_PINFUNC);
wmb();
/* Audio: DIP7 selects I2S(0)/AC97(1), but need I2C for I2S!
* so: DIP7=1 || DIP8=0 => AC97, DIP7=0 && DIP8=1 => I2S
*/
sw &= BCSR_SWITCHES_DIP_8 | BCSR_SWITCHES_DIP_7;
if (sw == BCSR_SWITCHES_DIP_8) {
bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC1MUX);
db1200_audio_dev.name = "au1xpsc_i2s";
printk(KERN_INFO " S6.7 ON : PSC1 mode I2S\n");
} else {
bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC1MUX, 0);
db1200_audio_dev.name = "au1xpsc_ac97";
printk(KERN_INFO " S6.7 OFF: PSC1 mode AC97\n");
}
/* Audio PSC clock is supplied externally. (FIXME: platdata!!) */
__raw_writel(PSC_SEL_CLK_SERCLK,
(void __iomem *)KSEG1ADDR(PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
wmb();
db1x_register_pcmcia_socket(PCMCIA_ATTR_PSEUDO_PHYS,
PCMCIA_ATTR_PSEUDO_PHYS + 0x00040000 - 1,
PCMCIA_MEM_PSEUDO_PHYS,

10
sound/soc/au1x/Kconfig
View File

@ -22,11 +22,13 @@ config SND_SOC_AU1XPSC_AC97
##
## Boards
##
config SND_SOC_SAMPLE_PSC_AC97
tristate "Sample Au12x0/Au1550 PSC AC97 sound machine"
config SND_SOC_DB1200
tristate "DB1200 AC97+I2S audio support"
depends on SND_SOC_AU1XPSC
select SND_SOC_AU1XPSC_AC97
select SND_SOC_AC97_CODEC
select SND_SOC_AU1XPSC_I2S
select SND_SOC_WM8731
help
This is a sample AC97 sound machine for use in Au12x0/Au1550
based systems which have audio on PSC1 (e.g. Db1200 demoboard).
Select this option to enable audio (AC97 or I2S) on the
Alchemy/AMD/RMI DB1200 demoboard.

4
sound/soc/au1x/Makefile
View File

@ -8,6 +8,6 @@ obj-$(CONFIG_SND_SOC_AU1XPSC_I2S) += snd-soc-au1xpsc-i2s.o
obj-$(CONFIG_SND_SOC_AU1XPSC_AC97) += snd-soc-au1xpsc-ac97.o
# Boards
snd-soc-sample-ac97-objs := sample-ac97.o
snd-soc-db1200-objs := db1200.o
obj-$(CONFIG_SND_SOC_SAMPLE_PSC_AC97) += snd-soc-sample-ac97.o
obj-$(CONFIG_SND_SOC_DB1200) += snd-soc-db1200.o

141
sound/soc/au1x/db1200.c Normal file
View File

@ -0,0 +1,141 @@
/*
* DB1200 ASoC audio fabric support code.
*
* (c) 2008-9 Manuel Lauss <manuel.lauss@gmail.com>
*
*/
#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 <asm/mach-db1x00/bcsr.h>
#include "../codecs/ac97.h"
#include "../codecs/wm8731.h"
#include "psc.h"
/*------------------------- AC97 PART ---------------------------*/
static struct snd_soc_dai_link db1200_ac97_dai = {
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai = &au1xpsc_ac97_dai,
.codec_dai = &ac97_dai,
};
static struct snd_soc_card db1200_ac97_machine = {
.name = "DB1200_AC97",
.dai_link = &db1200_ac97_dai,
.num_links = 1,
.platform = &au1xpsc_soc_platform,
};
static struct snd_soc_device db1200_ac97_devdata = {
.card = &db1200_ac97_machine,
.codec_dev = &soc_codec_dev_ac97,
};
/*------------------------- I2S PART ---------------------------*/
static int db1200_i2s_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int ret;
/* WM8731 has its own 12MHz crystal */
snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
12000000, SND_SOC_CLOCK_IN);
/* codec is bitclock and lrclk master */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
goto out;
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
goto out;
ret = 0;
out:
return ret;
}
static struct snd_soc_ops db1200_i2s_wm8731_ops = {
.startup = db1200_i2s_startup,
};
static struct snd_soc_dai_link db1200_i2s_dai = {
.name = "WM8731",
.stream_name = "WM8731 PCM",
.cpu_dai = &au1xpsc_i2s_dai,
.codec_dai = &wm8731_dai,
.ops = &db1200_i2s_wm8731_ops,
};
static struct snd_soc_card db1200_i2s_machine = {
.name = "DB1200_I2S",
.dai_link = &db1200_i2s_dai,
.num_links = 1,
.platform = &au1xpsc_soc_platform,
};
static struct snd_soc_device db1200_i2s_devdata = {
.card = &db1200_i2s_machine,
.codec_dev = &soc_codec_dev_wm8731,
};
/*------------------------- COMMON PART ---------------------------*/
static struct platform_device *db1200_asoc_dev;
static int __init db1200_audio_load(void)
{
int ret;
ret = -ENOMEM;
db1200_asoc_dev = platform_device_alloc("soc-audio", -1);
if (!db1200_asoc_dev)
goto out;
/* DB1200 board setup set PSC1MUX to preferred audio device */
if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX)
platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_devdata);
else
platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_devdata);
db1200_ac97_devdata.dev = &db1200_asoc_dev->dev;
db1200_i2s_devdata.dev = &db1200_asoc_dev->dev;
ret = platform_device_add(db1200_asoc_dev);
if (ret) {
platform_device_put(db1200_asoc_dev);
db1200_asoc_dev = NULL;
}
out:
return ret;
}
static void __exit db1200_audio_unload(void)
{
platform_device_unregister(db1200_asoc_dev);
}
module_init(db1200_audio_load);
module_exit(db1200_audio_unload);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DB1200 ASoC audio support");
MODULE_AUTHOR("Manuel Lauss");

144
sound/soc/au1x/sample-ac97.c
View File

@ -1,144 +0,0 @@
/*
* 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_card 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 = {
.card = &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>");