ASoC: Add support for Gumstix Overo (4e207873) · Commits · e / devices / android_kernel_xiaomi_markw

sound/soc/omap/Kconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -21,3 +21,13 @@ config SND_OMAP_SOC_OSK5912
		select SND_SOC_TLV320AIC23
		help
		Say Y if you want to add support for SoC audio on osk5912.

		config SND_OMAP_SOC_OVERO
		tristate "SoC Audio support for Gumstix Overo"
		depends on SND_OMAP_SOC && MACH_OVERO
		select SND_OMAP_SOC_MCBSP
		select SND_SOC_TWL4030
		help
		Say Y if you want to add support for SoC audio on the Gumstix Overo.

sound/soc/omap/Makefile

+3 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,9 @@ obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
		# OMAP Machine Support
		snd-soc-n810-objs := n810.o
		snd-soc-osk5912-objs := osk5912.o
		snd-soc-overo-objs := overo.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_OVERO) += snd-soc-overo.o

sound/soc/omap/overo.c

0 → 100644

+148 −0

Original line number	Diff line number	Diff line
		/*
		* overo.c -- SoC audio for Gumstix Overo
		*
		* 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 <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 overo_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 overo_ops = {
		.hw_params = overo_hw_params,
		};

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

		/* Audio machine driver */
		static struct snd_soc_machine snd_soc_machine_overo = {
		.name = "overo",
		.dai_link = &overo_dai,
		.num_links = 1,
		};

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

		static struct platform_device *overo_snd_device;

		static int __init overo_soc_init(void)
		{
		int ret;

		if (!machine_is_overo()) {
		pr_debug("Not Overo!\n");
		return -ENODEV;
		}
		printk(KERN_INFO "overo SoC init\n");

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

		platform_set_drvdata(overo_snd_device, &overo_snd_devdata);
		overo_snd_devdata.dev = &overo_snd_device->dev;
		(unsigned int )overo_dai.cpu_dai->private_data = 1; /* McBSP2 */

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

		return 0;

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

		return ret;
		}
		module_init(overo_soc_init);

		static void __exit overo_soc_exit(void)
		{
		platform_device_unregister(overo_snd_device);
		}
		module_exit(overo_soc_exit);

		MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>");
		MODULE_DESCRIPTION("ALSA SoC overo");
		MODULE_LICENSE("GPL");