ASoC: imx: add eukrea-tlv320 (91157888) · Commits · e / devices / android_kernel_xiaomi_markw

sound/soc/imx/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -28,3 +28,12 @@ config SND_SOC_PHYCORE_AC97
		help
		Say Y if you want to add support for SoC audio on Phytec phyCORE
		and phyCARD boards in AC97 mode

		config SND_SOC_EUKREA_TLV320
		bool "Eukrea TLV320"
		depends on MACH_EUKREA_MBIMX27_BASEBOARD
		select SND_IMX_SOC
		select SND_SOC_TLV320AIC23
		help
		Enable I2S based access to the TLV320AIC23B codec attached
		to the SSI4 interface

sound/soc/imx/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -8,8 +8,10 @@ endif
		obj-$(CONFIG_SND_IMX_SOC) += snd-soc-imx.o

		# i.MX Machine Support
		snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
		snd-soc-phycore-ac97-objs := phycore-ac97.o
		snd-soc-wm1133-ev1-objs := wm1133-ev1.o

		obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
		obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
		obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o

sound/soc/imx/eukrea-tlv320.c

0 → 100644

+135 −0

Original line number	Diff line number	Diff line
		/*
		* eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
		*
		* Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
		*
		* based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
		* which is Copyright 2009 Simtec Electronics
		* and on sound/soc/imx/phycore-ac97.c which is
		* Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
		*
		* 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/module.h>
		#include <linux/moduleparam.h>
		#include <linux/device.h>
		#include <linux/i2c.h>
		#include <sound/core.h>
		#include <sound/pcm.h>
		#include <sound/soc.h>
		#include <sound/soc-dapm.h>
		#include <asm/mach-types.h>

		#include "../codecs/tlv320aic23.h"
		#include "imx-ssi.h"

		#define CODEC_CLOCK 12000000

		static int eukrea_tlv320_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;

		ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
		SND_SOC_DAIFMT_NB_NF \|
		SND_SOC_DAIFMT_CBM_CFM);
		if (ret) {
		pr_err("%s: failed set cpu dai format\n", __func__);
		return ret;
		}

		ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
		SND_SOC_DAIFMT_NB_NF \|
		SND_SOC_DAIFMT_CBM_CFM);
		if (ret) {
		pr_err("%s: failed set codec dai format\n", __func__);
		return ret;
		}

		ret = snd_soc_dai_set_sysclk(codec_dai, 0,
		CODEC_CLOCK, SND_SOC_CLOCK_OUT);
		if (ret) {
		pr_err("%s: failed setting codec sysclk\n", __func__);
		return ret;
		}

		ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
		SND_SOC_CLOCK_IN);
		if (ret) {
		pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
		return ret;
		}

		return 0;
		}

		static struct snd_soc_ops eukrea_tlv320_snd_ops = {
		.hw_params = eukrea_tlv320_hw_params,
		};

		static struct snd_soc_dai_link eukrea_tlv320_dai = {
		.name = "tlv320aic23",
		.stream_name = "TLV320AIC23",
		.codec_dai = &tlv320aic23_dai,
		.ops = &eukrea_tlv320_snd_ops,
		};

		static struct snd_soc_card eukrea_tlv320 = {
		.name = "cpuimx-audio",
		.platform = &imx_soc_platform,
		.dai_link = &eukrea_tlv320_dai,
		.num_links = 1,
		};

		static struct snd_soc_device eukrea_tlv320_snd_devdata = {
		.card = &eukrea_tlv320,
		.codec_dev = &soc_codec_dev_tlv320aic23,
		};

		static struct platform_device *eukrea_tlv320_snd_device;

		static int __init eukrea_tlv320_init(void)
		{
		int ret;

		if (!machine_is_eukrea_cpuimx27())
		/* return happy. We might run on a totally different machine */
		return 0;

		eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1);
		if (!eukrea_tlv320_snd_device)
		return -ENOMEM;

		eukrea_tlv320_dai.cpu_dai = &imx_ssi_pcm_dai[0];

		platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320_snd_devdata);
		eukrea_tlv320_snd_devdata.dev = &eukrea_tlv320_snd_device->dev;
		ret = platform_device_add(eukrea_tlv320_snd_device);

		if (ret) {
		printk(KERN_ERR "ASoC: Platform device allocation failed\n");
		platform_device_put(eukrea_tlv320_snd_device);
		}

		return ret;
		}

		static void __exit eukrea_tlv320_exit(void)
		{
		platform_device_unregister(eukrea_tlv320_snd_device);
		}

		module_init(eukrea_tlv320_init);
		module_exit(eukrea_tlv320_exit);

		MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
		MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
		MODULE_LICENSE("GPL");