ASoC: Add support for omap2evm board (df573d2f) · Commits · e / devices / android_kernel_samsung_exynos9810

sound/soc/omap/Kconfig

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -30,4 +30,13 @@ config SND_OMAP_SOC_OVERO
	help		help
	Say Y if you want to add support for SoC audio on the Gumstix Overo.		Say Y if you want to add support for SoC audio on the Gumstix Overo.

			config SND_OMAP_SOC_OMAP2EVM
			tristate "SoC Audio support for OMAP2EVM board"
			depends on SND_OMAP_SOC && MACH_OMAP2EVM
			select SND_OMAP_SOC_MCBSP
			select SND_SOC_TWL4030
			help
			Say Y if you want to add support for SoC audio on the omap2evm board.

sound/soc/omap/Makefile

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -9,8 +9,10 @@ obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
	snd-soc-n810-objs := n810.o		snd-soc-n810-objs := n810.o
	snd-soc-osk5912-objs := osk5912.o		snd-soc-osk5912-objs := osk5912.o
	snd-soc-overo-objs := overo.o		snd-soc-overo-objs := overo.o
			snd-soc-omap2evm-objs := omap2evm.o

	obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o		obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
	obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o		obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
	obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o		obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
			obj-$(CONFIG_MACH_OMAP2EVM) += snd-soc-omap2evm.o

sound/soc/omap/omap2evm.c

0 → 100644

+150 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* omap2evm.c -- SoC audio machine driver for omap2evm board
			*
			* Author: Arun KS <arunks@mistralsolutions.com>
			*
			* Based on sound/soc/omap/overo.c by 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 <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 <mach/hardware.h>
			#include <mach/gpio.h>
			#include <mach/mcbsp.h>

			#include "omap-mcbsp.h"
			#include "omap-pcm.h"
			#include "../codecs/twl4030.h"

			static int omap2evm_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_dai *codec_dai = rtd->dai->codec_dai;
			struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
			int ret;

			/* Set codec DAI configuration */
			ret = snd_soc_dai_set_fmt(codec_dai,
			SND_SOC_DAIFMT_I2S \|
			SND_SOC_DAIFMT_NB_NF \|
			SND_SOC_DAIFMT_CBM_CFM);
			if (ret < 0) {
			printk(KERN_ERR "can't set codec DAI configuration\n");
			return ret;
			}

			/* Set cpu DAI configuration */
			ret = snd_soc_dai_set_fmt(cpu_dai,
			SND_SOC_DAIFMT_I2S \|
			SND_SOC_DAIFMT_NB_NF \|
			SND_SOC_DAIFMT_CBM_CFM);
			if (ret < 0) {
			printk(KERN_ERR "can't set cpu DAI configuration\n");
			return ret;
			}

			/* Set the codec system clock for DAC and ADC */
			ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
			SND_SOC_CLOCK_IN);
			if (ret < 0) {
			printk(KERN_ERR "can't set codec system clock\n");
			return ret;
			}

			return 0;
			}

			static struct snd_soc_ops omap2evm_ops = {
			.hw_params = omap2evm_hw_params,
			};

			/* Digital audio interface glue - connects codec <--> CPU */
			static struct snd_soc_dai_link omap2evm_dai = {
			.name = "TWL4030",
			.stream_name = "TWL4030",
			.cpu_dai = &omap_mcbsp_dai[0],
			.codec_dai = &twl4030_dai,
			.ops = &omap2evm_ops,
			};

			/* Audio machine driver */
			static struct snd_soc_machine snd_soc_machine_omap2evm = {
			.name = "omap2evm",
			.dai_link = &omap2evm_dai,
			.num_links = 1,
			};

			/* Audio subsystem */
			static struct snd_soc_device omap2evm_snd_devdata = {
			.machine = &snd_soc_machine_omap2evm,
			.platform = &omap_soc_platform,
			.codec_dev = &soc_codec_dev_twl4030,
			};

			static struct platform_device *omap2evm_snd_device;

			static int __init omap2evm_soc_init(void)
			{
			int ret;

			if (!machine_is_omap2evm()) {
			pr_debug("Not omap2evm!\n");
			return -ENODEV;
			}
			printk(KERN_INFO "omap2evm SoC init\n");

			omap2evm_snd_device = platform_device_alloc("soc-audio", -1);
			if (!omap2evm_snd_device) {
			printk(KERN_ERR "Platform device allocation failed\n");
			return -ENOMEM;
			}

			platform_set_drvdata(omap2evm_snd_device, &omap2evm_snd_devdata);
			omap2evm_snd_devdata.dev = &omap2evm_snd_device->dev;
			(unsigned int )omap2evm_dai.cpu_dai->private_data = 1; /* McBSP2 */

			ret = platform_device_add(omap2evm_snd_device);
			if (ret)
			goto err1;

			return 0;

			err1:
			printk(KERN_ERR "Unable to add platform device\n");
			platform_device_put(omap2evm_snd_device);

			return ret;
			}
			module_init(omap2evm_soc_init);

			static void __exit omap2evm_soc_exit(void)
			{
			platform_device_unregister(omap2evm_snd_device);
			}
			module_exit(omap2evm_soc_exit);

			MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
			MODULE_DESCRIPTION("ALSA SoC omap2evm");
			MODULE_LICENSE("GPL");