ASoC: board driver to connect bf5xx with ad1938 (c8489c3e) · Commits · e / devices / android_kernel_fairphone_FP5

sound/soc/blackfin/Kconfig

+8 −0

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		@@ -96,6 +96,14 @@ config SND_BF5XX_SOC_AD1980
		help
		Say Y if you want to add support for SoC audio on BF5xx STAMP/EZKIT.

		config SND_BF5XX_SOC_AD1938
		tristate "SoC AD1938 Audio support for Blackfin"
		depends on SND_BF5XX_TDM
		select SND_BF5XX_SOC_TDM
		select SND_SOC_AD1938
		help
		Say Y if you want to add support for AD1938 codec on Blackfin.

		config SND_BF5XX_SPORT_NUM
		int "Set a SPORT for Sound chip"
		depends on (SND_BF5XX_I2S \|\| SND_BF5XX_AC97 \|\| SND_BF5XX_TDM)

sound/soc/blackfin/Makefile

+2 −0

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		@@ -19,7 +19,9 @@ obj-$(CONFIG_SND_BF5XX_SOC_TDM) += snd-soc-bf5xx-tdm.o
		snd-ad1980-objs := bf5xx-ad1980.o
		snd-ssm2602-objs := bf5xx-ssm2602.o
		snd-ad73311-objs := bf5xx-ad73311.o
		snd-ad1938-objs := bf5xx-ad1938.o

		obj-$(CONFIG_SND_BF5XX_SOC_AD1980) += snd-ad1980.o
		obj-$(CONFIG_SND_BF5XX_SOC_SSM2602) += snd-ssm2602.o
		obj-$(CONFIG_SND_BF5XX_SOC_AD73311) += snd-ad73311.o
		obj-$(CONFIG_SND_BF5XX_SOC_AD1938) += snd-ad1938.o

sound/soc/blackfin/bf5xx-ad1938.c

0 → 100644

+142 −0

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		/*
		* File: sound/soc/blackfin/bf5xx-ad1938.c
		* Author: Barry Song <Barry.Song@analog.com>
		*
		* Created: Thur June 4 2009
		* Description: Board driver for ad1938 sound chip
		*
		* Bugs: Enter bugs at http://blackfin.uclinux.org/
		*
		* 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.
		*
		* 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, see the file COPYING, or write
		* to the Free Software Foundation, Inc.,
		* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
		*/

		#include <linux/module.h>
		#include <linux/moduleparam.h>
		#include <linux/device.h>
		#include <sound/core.h>
		#include <sound/pcm.h>
		#include <sound/soc.h>
		#include <sound/soc-dapm.h>
		#include <sound/pcm_params.h>

		#include <asm/blackfin.h>
		#include <asm/cacheflush.h>
		#include <asm/irq.h>
		#include <asm/dma.h>
		#include <asm/portmux.h>

		#include "../codecs/ad1938.h"
		#include "bf5xx-sport.h"

		#include "bf5xx-tdm-pcm.h"
		#include "bf5xx-tdm.h"

		static struct snd_soc_card bf5xx_ad1938;

		static int bf5xx_ad1938_startup(struct snd_pcm_substream *substream)
		{
		struct snd_soc_pcm_runtime *rtd = substream->private_data;
		struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

		cpu_dai->private_data = sport_handle;
		return 0;
		}

		static int bf5xx_ad1938_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 *cpu_dai = rtd->dai->cpu_dai;
		struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
		int ret = 0;
		/* set cpu DAI configuration */
		ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A \|
		SND_SOC_DAIFMT_IB_IF \| SND_SOC_DAIFMT_CBM_CFM);
		if (ret < 0)
		return ret;

		/* set codec DAI configuration */
		ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A \|
		SND_SOC_DAIFMT_IB_IF \| SND_SOC_DAIFMT_CBM_CFM);
		if (ret < 0)
		return ret;

		/* set codec DAI slots, 8 channels, all channels are enabled */
		ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 8);
		if (ret < 0)
		return ret;

		return 0;
		}

		static struct snd_soc_ops bf5xx_ad1938_ops = {
		.startup = bf5xx_ad1938_startup,
		.hw_params = bf5xx_ad1938_hw_params,
		};

		static struct snd_soc_dai_link bf5xx_ad1938_dai = {
		.name = "ad1938",
		.stream_name = "AD1938",
		.cpu_dai = &bf5xx_tdm_dai,
		.codec_dai = &ad1938_dai,
		.ops = &bf5xx_ad1938_ops,
		};

		static struct snd_soc_card bf5xx_ad1938 = {
		.name = "bf5xx_ad1938",
		.platform = &bf5xx_tdm_soc_platform,
		.dai_link = &bf5xx_ad1938_dai,
		.num_links = 1,
		};

		static struct snd_soc_device bf5xx_ad1938_snd_devdata = {
		.card = &bf5xx_ad1938,
		.codec_dev = &soc_codec_dev_ad1938,
		};

		static struct platform_device *bfxx_ad1938_snd_device;

		static int __init bf5xx_ad1938_init(void)
		{
		int ret;

		bfxx_ad1938_snd_device = platform_device_alloc("soc-audio", -1);
		if (!bfxx_ad1938_snd_device)
		return -ENOMEM;

		platform_set_drvdata(bfxx_ad1938_snd_device, &bf5xx_ad1938_snd_devdata);
		bf5xx_ad1938_snd_devdata.dev = &bfxx_ad1938_snd_device->dev;
		ret = platform_device_add(bfxx_ad1938_snd_device);

		if (ret)
		platform_device_put(bfxx_ad1938_snd_device);

		return ret;
		}

		static void __exit bf5xx_ad1938_exit(void)
		{
		platform_device_unregister(bfxx_ad1938_snd_device);
		}

		module_init(bf5xx_ad1938_init);
		module_exit(bf5xx_ad1938_exit);

		/* Module information */
		MODULE_AUTHOR("Barry Song");
		MODULE_DESCRIPTION("ALSA SoC AD1938 board driver");
		MODULE_LICENSE("GPL");