ASoC: SAMSUNG: Add WM8994 PCM Machine driver (d2ec3aba) · Commits · 戴 / test

sound/soc/samsung/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -171,6 +171,14 @@ config SND_SOC_SMDK_WM8580_PCM
		help
		Say Y if you want to add support for SoC audio on the SMDK.

		config SND_SOC_SMDK_WM8994_PCM
		tristate "SoC PCM Audio support for WM8994 on SMDK"
		depends on SND_SOC_SAMSUNG && (MACH_SMDKC210 \|\| MACH_SMDKV310)
		select SND_SOC_WM8994
		select SND_SAMSUNG_PCM
		help
		Say Y if you want to add support for SoC audio on the SMDK

		config SND_SOC_SPEYSIDE
		tristate "Audio support for Wolfson Speyside"
		depends on SND_SOC_SAMSUNG && MACH_WLF_CRAGG_6410

sound/soc/samsung/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@ snd-soc-s3c64xx-smartq-wm8987-objs := smartq_wm8987.o
		snd-soc-goni-wm8994-objs := goni_wm8994.o
		snd-soc-smdk-spdif-objs := smdk_spdif.o
		snd-soc-smdk-wm8580pcm-objs := smdk_wm8580pcm.o
		snd-soc-smdk-wm8994pcm-objs := smdk_wm8994pcm.o
		snd-soc-speyside-objs := speyside.o
		snd-soc-speyside-wm8962-objs := speyside_wm8962.o

		@@ -55,5 +56,6 @@ obj-$(CONFIG_SND_SOC_SMARTQ) += snd-soc-s3c64xx-smartq-wm8987.o
		obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF) += snd-soc-smdk-spdif.o
		obj-$(CONFIG_SND_SOC_GONI_AQUILA_WM8994) += snd-soc-goni-wm8994.o
		obj-$(CONFIG_SND_SOC_SMDK_WM8580_PCM) += snd-soc-smdk-wm8580pcm.o
		obj-$(CONFIG_SND_SOC_SMDK_WM8994_PCM) += snd-soc-smdk-wm8994pcm.o
		obj-$(CONFIG_SND_SOC_SPEYSIDE) += snd-soc-speyside.o
		obj-$(CONFIG_SND_SOC_SPEYSIDE_WM8962) += snd-soc-speyside-wm8962.o

sound/soc/samsung/smdk_wm8994pcm.c

0 → 100644

+176 −0

Original line number	Diff line number	Diff line
		/*
		* sound/soc/samsung/smdk_wm8994pcm.c
		*
		* Copyright (c) 2011 Samsung Electronics Co., Ltd
		* http://www.samsung.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 <sound/soc.h>
		#include <sound/pcm.h>
		#include <sound/pcm_params.h>

		#include "../codecs/wm8994.h"
		#include "dma.h"
		#include "pcm.h"

		/*
		* Board Settings:
		* o '1' means 'ON'
		* o '0' means 'OFF'
		* o 'X' means 'Don't care'
		*
		* SMDKC210, SMDKV310: CFG3- 1001, CFG5-1000, CFG7-111111
		*/

		/*
		* Configure audio route as :-
		* $ amixer sset 'DAC1' on,on
		* $ amixer sset 'Right Headphone Mux' 'DAC'
		* $ amixer sset 'Left Headphone Mux' 'DAC'
		* $ amixer sset 'DAC1R Mixer AIF1.1' on
		* $ amixer sset 'DAC1L Mixer AIF1.1' on
		* $ amixer sset 'IN2L' on
		* $ amixer sset 'IN2L PGA IN2LN' on
		* $ amixer sset 'MIXINL IN2L' on
		* $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
		* $ amixer sset 'IN2R' on
		* $ amixer sset 'IN2R PGA IN2RN' on
		* $ amixer sset 'MIXINR IN2R' on
		* $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
		*/

		/* SMDK has a 16.9344MHZ crystal attached to WM8994 */
		#define SMDK_WM8994_FREQ 16934400

		static int smdk_wm8994_pcm_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->codec_dai;
		struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
		unsigned long mclk_freq;
		int rfs, ret;

		switch(params_rate(params)) {
		case 8000:
		rfs = 512;
		break;
		default:
		dev_err(cpu_dai->dev, "%s:%d Sampling Rate %u not supported!\n",
		__func__, __LINE__, params_rate(params));
		return -EINVAL;
		}

		mclk_freq = params_rate(params) * rfs;

		/* Set the codec DAI configuration */
		ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B
		\| SND_SOC_DAIFMT_IB_NF
		\| SND_SOC_DAIFMT_CBS_CFS);
		if (ret < 0)
		return ret;

		/* Set the cpu DAI configuration */
		ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_B
		\| SND_SOC_DAIFMT_IB_NF
		\| SND_SOC_DAIFMT_CBS_CFS);
		if (ret < 0)
		return ret;

		ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
		mclk_freq, SND_SOC_CLOCK_IN);
		if (ret < 0)
		return ret;

		ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
		SMDK_WM8994_FREQ, mclk_freq);
		if (ret < 0)
		return ret;

		/* Set PCM source clock on CPU */
		ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX,
		mclk_freq, SND_SOC_CLOCK_IN);
		if (ret < 0)
		return ret;

		/* Set SCLK_DIV for making bclk */
		ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs);
		if (ret < 0)
		return ret;

		return 0;
		}

		static struct snd_soc_ops smdk_wm8994_pcm_ops = {
		.hw_params = smdk_wm8994_pcm_hw_params,
		};

		static struct snd_soc_dai_link smdk_dai[] = {
		{
		.name = "WM8994 PAIF PCM",
		.stream_name = "Primary PCM",
		.cpu_dai_name = "samsung-pcm.0",
		.codec_dai_name = "wm8994-aif1",
		.platform_name = "samsung-audio",
		.codec_name = "wm8994-codec",
		.ops = &smdk_wm8994_pcm_ops,
		},
		};

		static struct snd_soc_card smdk_pcm = {
		.name = "SMDK-PCM",
		.dai_link = smdk_dai,
		.num_links = 1,
		};

		static int __devinit snd_smdk_probe(struct platform_device *pdev)
		{
		int ret = 0;

		smdk_pcm.dev = &pdev->dev;
		ret = snd_soc_register_card(&smdk_pcm);
		if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret);
		return ret;
		}

		return 0;
		}

		static int __devexit snd_smdk_remove(struct platform_device *pdev)
		{
		snd_soc_unregister_card(&smdk_pcm);
		platform_set_drvdata(pdev, NULL);
		return 0;
		}

		static struct platform_driver snd_smdk_driver = {
		.driver = {
		.owner = THIS_MODULE,
		.name = "samsung-smdk-pcm",
		},
		.probe = snd_smdk_probe,
		.remove = __devexit_p(snd_smdk_remove),
		};

		static int __init smdk_audio_init(void)
		{
		return platform_driver_register(&snd_smdk_driver);
		}

		module_init(smdk_audio_init);

		static void __exit smdk_audio_exit(void)
		{
		platform_driver_unregister(&snd_smdk_driver);
		}

		module_exit(smdk_audio_exit);

		MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>");
		MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM");
		MODULE_LICENSE("GPL");

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