From: Steve Sakoman 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 --- 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 + * + * 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 +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#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 "); +MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM"); +MODULE_LICENSE("GPL");