path: root/recipes/linux/linux-omap-2.6.26/beagleboard/ASoC-machine-driver-for-OMAP3-EVM.patch

From: Steve Sakoman <steve@sakoman.com>
Date: Fri, 18 Jul 2008 16:41:37 +0000 (-0700)
Subject: ASoC machine driver for OMAP3 EVM
X-Git-Url: http://www.sakoman.net/cgi-bin/gitweb.cgi?p=linux-omap-2.6.git;a=commitdiff_plain;h=2e6af042b4af677e62e32d048e770f6755e67a7f

ASoC machine driver for OMAP3 EVM

Add basic audio support for OMAP3 EVM

Signed-off-by: Steve Sakoman <steve@sakoman.com>
---

diff --git a/arch/arm/configs/omap3_beagle_defconfig b/arch/arm/configs/omap3_beagle_defconfig
index cce83e5..a48780a 100644
--- a/arch/arm/configs/omap3_beagle_defconfig
+++ b/arch/arm/configs/omap3_beagle_defconfig
@@ -735,7 +735,82 @@ CONFIG_FONT_8x16=y
 #
 # Sound
 #
-# CONFIG_SOUND is not set
+CONFIG_SOUND=y
+
+#
+# Advanced Linux Sound Architecture
+#
+CONFIG_SND=y
+CONFIG_SND_TIMER=y
+CONFIG_SND_PCM=y
+CONFIG_SND_HWDEP=y
+CONFIG_SND_RAWMIDI=y
+# CONFIG_SND_SEQUENCER is not set
+CONFIG_SND_OSSEMUL=y
+CONFIG_SND_MIXER_OSS=y
+CONFIG_SND_PCM_OSS=y
+CONFIG_SND_PCM_OSS_PLUGINS=y
+# CONFIG_SND_DYNAMIC_MINORS is not set
+CONFIG_SND_SUPPORT_OLD_API=y
+CONFIG_SND_VERBOSE_PROCFS=y
+CONFIG_SND_VERBOSE_PRINTK=y
+CONFIG_SND_DEBUG=y
+CONFIG_SND_DEBUG_DETECT=y
+CONFIG_SND_PCM_XRUN_DEBUG=y
+
+#
+# Generic devices
+#
+# CONFIG_SND_DUMMY is not set
+# CONFIG_SND_MTPAV is not set
+# CONFIG_SND_SERIAL_U16550 is not set
+# CONFIG_SND_MPU401 is not set
+
+#
+# ALSA ARM devices
+#
+# CONFIG_SND_OMAP_AIC23 is not set
+# CONFIG_SND_OMAP_TSC2101 is not set
+# CONFIG_SND_SX1 is not set
+# CONFIG_SND_OMAP_TSC2102 is not set
+# CONFIG_SND_OMAP24XX_EAC is not set
+
+#
+# SPI devices
+#
+
+#
+# USB devices
+#
+CONFIG_SND_USB_AUDIO=y
+# CONFIG_SND_USB_CAIAQ is not set
+
+#
+# System on Chip audio support
+#
+CONFIG_SND_SOC=y
+
+#
+# ALSA SoC audio for Freescale SOCs
+#
+
+#
+# SoC Audio for the Texas Instruments OMAP
+#
+CONFIG_SND_OMAP_SOC=y
+CONFIG_SND_OMAP_SOC_MCBSP=y
+CONFIG_SND_OMAP_SOC_OMAP3BEAGLE=y
+CONFIG_SND_SOC_TWL4030=y
+
+#
+# Open Sound System
+#
+CONFIG_SOUND_PRIME=y
+CONFIG_HID_SUPPORT=y
+CONFIG_HID=y
+# CONFIG_HID_DEBUG is not set
+# CONFIG_HIDRAW is not set
+
 # CONFIG_HID_SUPPORT is not set
 CONFIG_USB_SUPPORT=y
 CONFIG_USB_ARCH_HAS_HCD=y
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 0230d83..0def5ba 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -16,4 +16,12 @@ config SND_OMAP_SOC_N810
 	help
 	  Say Y if you want to add support for SoC audio on Nokia N810.
 
+config SND_OMAP_SOC_OMAP3EVM
+	tristate "SoC Audio support for OMAP3 EVM"
+	depends on SND_OMAP_SOC && MACH_OMAP3EVM
+	select SND_OMAP_SOC_MCBSP
+	select SND_SOC_TWL4030
+	help
+	  Say Y if you want to add support for SoC audio on the OMAP3 EVM.
+
 endmenu
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index d8d8d58..985eddc 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -7,5 +7,8 @@ obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
 
 # OMAP Machine Support
 snd-soc-n810-objs := n810.o
+snd-soc-omap3evm-objs := omap3evm.o
 
 obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
+obj-$(CONFIG_SND_OMAP_SOC_OMAP3EVM) += snd-soc-omap3evm.o
+
diff --git a/sound/soc/omap/omap3evm.c b/sound/soc/omap/omap3evm.c
new file mode 100644
index 0000000..d436bb4
--- /dev/null
+++ b/sound/soc/omap/omap3evm.c
@@ -0,0 +1,142 @@
+/*
+ * omap3evm.c  --  SoC audio for OMAP3 EVM
+ *
+ * Author: Steve Sakoman <steve@sakoman.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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.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-types.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+#include "../codecs/twl4030.h"
+
+static int omap3evm_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
+	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret;
+
+	/* Set codec DAI configuration */
+	ret = codec_dai->dai_ops.set_fmt(codec_dai,
+					 SND_SOC_DAIFMT_I2S |
+					 SND_SOC_DAIFMT_NB_NF |
+					 SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+	printk(KERN_INFO "can't set codec DAI configuration\n");
+		return ret;
+	}
+
+	/* Set cpu DAI configuration */
+	ret = cpu_dai->dai_ops.set_fmt(cpu_dai,
+				       SND_SOC_DAIFMT_I2S |
+				       SND_SOC_DAIFMT_NB_NF |
+				       SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0) {
+	printk(KERN_INFO "can't set cpu DAI configuration\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_ops omap3evm_ops = {
+	.hw_params = omap3evm_hw_params,
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link omap3evm_dai = {
+	.name = "TWL4030",
+	.stream_name = "TWL4030",
+	.cpu_dai = &omap_mcbsp_dai[0],
+	.codec_dai = &twl4030_dai,
+	.ops = &omap3evm_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_machine snd_soc_machine_omap3evm = {
+	.name = "omap3evm",
+	.dai_link = &omap3evm_dai,
+	.num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device omap3evm_snd_devdata = {
+	.machine = &snd_soc_machine_omap3evm,
+	.platform = &omap_soc_platform,
+	.codec_dev = &soc_codec_dev_twl4030,
+};
+
+static struct platform_device *omap3evm_snd_device;
+
+static int __init omap3evm_soc_init(void)
+{
+	int ret;
+
+	printk(KERN_INFO "OMAP3 EVM SoC init\n");
+	if (!machine_is_omap3evm()) {
+		printk(KERN_INFO "Not OMAP3 EVM!\n");
+		return -ENODEV;
+	}
+
+	omap3evm_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!omap3evm_snd_device) {
+		printk(KERN_INFO "Platform device allocation failed\n");
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(omap3evm_snd_device, &omap3evm_snd_devdata);
+	omap3evm_snd_devdata.dev = &omap3evm_snd_device->dev;
+	*(unsigned int *)omap3evm_dai.cpu_dai->private_data = 1; /* McBSP2 */
+
+	ret = platform_device_add(omap3evm_snd_device);
+	if (ret)
+		goto err1;
+
+	return 0;
+
+err1:
+	printk(KERN_INFO "Unable to add platform device\n");
+	platform_device_put(omap3evm_snd_device);
+
+	return ret;
+}
+
+static void __exit omap3evm_soc_exit(void)
+{
+	printk(KERN_INFO "OMAP3 EVM SoC exit\n");
+	platform_device_unregister(omap3evm_snd_device);
+}
+
+module_init(omap3evm_soc_init);
+module_exit(omap3evm_soc_exit);
+
+MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>");
+MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM");
+MODULE_LICENSE("GPL");