ASoC: EP93xx: Add Snapper CL15 i2s audio support (315f7da6) · Commits · e / devices / android_kernel_fairphone_FP3

arch/arm/mach-ep93xx/snappercl15.c

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Original line number	Diff line number	Diff line
		@@ -157,6 +157,7 @@ static void __init snappercl15_init_machine(void)
		ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data,
		ARRAY_SIZE(snappercl15_i2c_data));
		ep93xx_register_fb(&snappercl15_fb_info);
		ep93xx_register_i2s();
		platform_device_register(&snappercl15_nand_device);
		}

sound/soc/ep93xx/Kconfig

+9 −0

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		@@ -7,3 +7,12 @@ config SND_EP93XX_SOC

		config SND_EP93XX_SOC_I2S
		tristate

		config SND_EP93XX_SOC_SNAPPERCL15
		tristate "SoC Audio support for Bluewater Systems Snapper CL15 module"
		depends on SND_EP93XX_SOC && MACH_SNAPPER_CL15
		select SND_EP93XX_SOC_I2S
		select SND_SOC_TLV320AIC23
		help
		Say Y or M here if you want to add support for I2S audio on the
		Bluewater Systems Snapper CL15 module.

sound/soc/ep93xx/Makefile

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		@@ -6,3 +6,6 @@ obj-$(CONFIG_SND_EP93XX_SOC) += snd-soc-ep93xx.o
		obj-$(CONFIG_SND_EP93XX_SOC_I2S) += snd-soc-ep93xx-i2s.o

		# EP93XX Machine Support
		snd-soc-snappercl15-objs := snappercl15.o

		obj-$(CONFIG_SND_EP93XX_SOC_SNAPPERCL15) += snd-soc-snappercl15.o

sound/soc/ep93xx/snappercl15.c

0 → 100644

+150 −0

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		/*
		* snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
		*
		* Copyright (C) 2008 Bluewater Systems Ltd
		* Author: Ryan Mallon <ryan@bluewatersys.com>
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of the GNU General Public License as published by the
		* Free Software Foundation; either version 2 of the License, or (at your
		* option) any later version.
		*
		*/

		#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 "../codecs/tlv320aic23.h"
		#include "ep93xx-pcm.h"
		#include "ep93xx-i2s.h"

		#define CODEC_CLOCK 5644800

		static int snappercl15_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 err;

		err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
		SND_SOC_DAIFMT_NB_IF \|
		SND_SOC_DAIFMT_CBS_CFS);

		err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
		SND_SOC_DAIFMT_NB_IF \|
		SND_SOC_DAIFMT_CBS_CFS);
		if (err)
		return err;

		err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
		SND_SOC_CLOCK_IN);
		if (err)
		return err;

		err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
		SND_SOC_CLOCK_OUT);
		if (err)
		return err;

		return 0;
		}

		static struct snd_soc_ops snappercl15_ops = {
		.hw_params = snappercl15_hw_params,
		};

		static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
		SND_SOC_DAPM_HP("Headphone Jack", NULL),
		SND_SOC_DAPM_LINE("Line In", NULL),
		SND_SOC_DAPM_MIC("Mic Jack", NULL),
		};

		static const struct snd_soc_dapm_route audio_map[] = {
		{"Headphone Jack", NULL, "LHPOUT"},
		{"Headphone Jack", NULL, "RHPOUT"},

		{"LLINEIN", NULL, "Line In"},
		{"RLINEIN", NULL, "Line In"},

		{"MICIN", NULL, "Mic Jack"},
		};

		static int snappercl15_tlv320aic23_init(struct snd_soc_codec *codec)
		{
		snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
		ARRAY_SIZE(tlv320aic23_dapm_widgets));

		snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
		return 0;
		}

		static struct snd_soc_dai_link snappercl15_dai = {
		.name = "tlv320aic23",
		.stream_name = "AIC23",
		.cpu_dai = &ep93xx_i2s_dai,
		.codec_dai = &tlv320aic23_dai,
		.init = snappercl15_tlv320aic23_init,
		.ops = &snappercl15_ops,
		};

		static struct snd_soc_card snd_soc_snappercl15 = {
		.name = "Snapper CL15",
		.platform = &ep93xx_soc_platform,
		.dai_link = &snappercl15_dai,
		.num_links = 1,
		};

		static struct snd_soc_device snappercl15_snd_devdata = {
		.card = &snd_soc_snappercl15,
		.codec_dev = &soc_codec_dev_tlv320aic23,
		};

		static struct platform_device *snappercl15_snd_device;

		static int __init snappercl15_init(void)
		{
		int ret;

		if (!machine_is_snapper_cl15())
		return -ENODEV;

		ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97,
		EP93XX_SYSCON_I2SCLKDIV_ORIDE \|
		EP93XX_SYSCON_I2SCLKDIV_SPOL);
		if (ret)
		return ret;

		snappercl15_snd_device = platform_device_alloc("soc-audio", -1);
		if (!snappercl15_snd_device)
		return -ENOMEM;

		platform_set_drvdata(snappercl15_snd_device, &snappercl15_snd_devdata);
		snappercl15_snd_devdata.dev = &snappercl15_snd_device->dev;
		ret = platform_device_add(snappercl15_snd_device);
		if (ret)
		platform_device_put(snappercl15_snd_device);

		return ret;
		}

		static void __exit snappercl15_exit(void)
		{
		platform_device_unregister(snappercl15_snd_device);
		ep93xx_i2s_release();
		}

		module_init(snappercl15_init);
		module_exit(snappercl15_exit);

		MODULE_AUTHOR("Ryan Mallon <ryan@bluewatersys.com>");
		MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
		MODULE_LICENSE("GPL");