[alsa-devel] [PATCH 4/7] Alchemy: DB1200 AC97+I2S audio support.
Manuel Lauss
manuel.lauss at googlemail.com
Sun Jun 7 20:39:01 CEST 2009
Replaces the sample Alchemy PSC AC97 machine code with a DB1200 machine
driver with AC97 and I2S support.
AC97/I2S can be selected at boot time by setting switch S6.7.
Cc: alsa-devel at alsa-project.org
Signed-off-by: Manuel Lauss <manuel.lauss at gmail.com>
---
arch/mips/alchemy/devboards/db1200/platform.c | 12 ++
sound/soc/au1x/Kconfig | 10 +-
sound/soc/au1x/Makefile | 4 +-
sound/soc/au1x/db1200.c | 189 +++++++++++++++++++++++++
sound/soc/au1x/sample-ac97.c | 144 -------------------
5 files changed, 209 insertions(+), 150 deletions(-)
create mode 100644 sound/soc/au1x/db1200.c
delete mode 100644 sound/soc/au1x/sample-ac97.c
diff --git a/arch/mips/alchemy/devboards/db1200/platform.c b/arch/mips/alchemy/devboards/db1200/platform.c
index cc3f663..b3142e0 100644
--- a/arch/mips/alchemy/devboards/db1200/platform.c
+++ b/arch/mips/alchemy/devboards/db1200/platform.c
@@ -428,6 +428,7 @@ 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
@@ -466,6 +467,17 @@ static int __init db1200_dev_init(void)
au_writel(pfc, SYS_PINFUNC);
au_sync();
+ /* audio is handled in sound/soc/au1x/db1200.c;
+ * however we need I2C to talk to I2S codec.
+ */
+ if ((bcsr->switches & 3) == BCSR_SWITCHES_DIP_8) {
+ bcsr->resets |= BCSR_RESETS_PSC1MUX;
+ printk(KERN_INFO " S6.7 ON : PSC1 mode I2S\n");
+ } else {
+ bcsr->resets &= ~BCSR_RESETS_PSC1MUX;
+ printk(KERN_INFO " S6.7 OFF: PSC1 mode AC97\n");
+ }
+
return platform_add_devices(db1200_devs, ARRAY_SIZE(db1200_devs));
}
device_initcall(db1200_dev_init);
diff --git a/sound/soc/au1x/Kconfig b/sound/soc/au1x/Kconfig
index 410a893..4b67140 100644
--- a/sound/soc/au1x/Kconfig
+++ b/sound/soc/au1x/Kconfig
@@ -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.
diff --git a/sound/soc/au1x/Makefile b/sound/soc/au1x/Makefile
index 6c6950b..1687307 100644
--- a/sound/soc/au1x/Makefile
+++ b/sound/soc/au1x/Makefile
@@ -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
diff --git a/sound/soc/au1x/db1200.c b/sound/soc/au1x/db1200.c
new file mode 100644
index 0000000..a2cb02c
--- /dev/null
+++ b/sound/soc/au1x/db1200.c
@@ -0,0 +1,189 @@
+/*
+ * DB1200 ASoC audio support code.
+ *
+ * (c) 2008 Manuel Lauss <manuel.lauss at 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.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+
+/* it sucks that the ASoC headers are not under include/ */
+#include "../codecs/ac97.h"
+#include "../codecs/wm8731.h"
+#include "psc.h"
+
+/*------------------------- AC97 PART ---------------------------*/
+
+static int db1200_ac97_init(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_sync(codec);
+ return 0;
+}
+
+static struct snd_soc_dai_link db1200_ac97_dai = {
+ .name = "AC97",
+ .stream_name = "AC97 HiFi",
+ .cpu_dai = &au1xpsc_ac97_dai,
+ .codec_dai = &ac97_dai,
+ .init = db1200_ac97_init,
+};
+
+static struct snd_soc_card db1200_ac97_machine = {
+ .name = "DB1200 AC97 Audio",
+ .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 int db1200_i2s_init(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_sync(codec);
+ return 0;
+}
+
+static struct snd_soc_dai_link db1200_i2s_dai = {
+ .name = "WM8731",
+ .stream_name = "WM8731 PCM",
+ .cpu_dai = &au1xpsc_i2s_dai,
+ .codec_dai = &wm8731_dai,
+ .init = db1200_i2s_init,
+ .ops = &db1200_i2s_wm8731_ops,
+};
+
+static struct snd_soc_card db1200_i2s_machine = {
+ .name = "DB1200 I2S Audio",
+ .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 resource psc1_res[] = {
+ [0] = {
+ .start = CPHYSADDR(PSC1_BASE_ADDR),
+ .end = CPHYSADDR(PSC1_BASE_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_asoc_dev;
+
+static int __init db1200_audio_load(void)
+{
+ int ret;
+
+ /* DB1200: PSC clock is supplied externally */
+ au_writel(PSC_SEL_CLK_SERCLK, PSC1_BASE_ADDR + PSC_SEL_OFFSET);
+ au_sync();
+
+ ret = -ENOMEM;
+ db1200_asoc_dev = platform_device_alloc("soc-audio", -1);
+ if (!db1200_asoc_dev)
+ goto out;
+
+ db1200_asoc_dev->resource =
+ kmemdup(psc1_res, sizeof(struct resource) *
+ ARRAY_SIZE(psc1_res), GFP_KERNEL);
+ db1200_asoc_dev->num_resources = ARRAY_SIZE(psc1_res);
+ db1200_asoc_dev->id = 1;
+
+ /* DB1200 board setup set PSC1MUX to preferred audio device */
+ if (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");
diff --git a/sound/soc/au1x/sample-ac97.c b/sound/soc/au1x/sample-ac97.c
deleted file mode 100644
index 27683eb..0000000
--- a/sound/soc/au1x/sample-ac97.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Sample Au12x0/Au1550 PSC AC97 sound machine.
- *
- * Copyright (c) 2007-2008 Manuel Lauss <mano at 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 at roarinelk.homelinux.net>");
--
1.6.3.1
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