[mirror_ubuntu-bionic-kernel.git] / sound / soc / samsung / smdk_wm8994pcm.c

/*
 *  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 <linux/module.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>

#include "../codecs/wm8994.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;

	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-pcm.0",
		.codec_name = "wm8994-codec",
		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF |
			   SND_SOC_DAIFMT_CBS_CFS,
		.ops = &smdk_wm8994_pcm_ops,
	},
};

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

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

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

	return ret;
}

static struct platform_driver snd_smdk_driver = {
	.driver = {
		.name = "samsung-smdk-pcm",
	},
	.probe = snd_smdk_probe,
};

module_platform_driver(snd_smdk_driver);

MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>");
MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM");
MODULE_LICENSE("GPL");
Commit	Line	Data
d2ec3aba SK	1	/*
	2	* sound/soc/samsung/smdk_wm8994pcm.c
	3	*
	4	* Copyright (c) 2011 Samsung Electronics Co., Ltd
	5	* http://www.samsung.com
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*/
da155d5b	12	#include <linux/module.h>
d2ec3aba SK	13	#include <sound/soc.h>
	14	#include <sound/pcm.h>
	15	#include <sound/pcm_params.h>
	16
	17	#include "../codecs/wm8994.h"
d2ec3aba SK	18	#include "pcm.h"
	19
	20	/*
	21	* Board Settings:
	22	* o '1' means 'ON'
	23	* o '0' means 'OFF'
	24	* o 'X' means 'Don't care'
	25	*
	26	* SMDKC210, SMDKV310: CFG3- 1001, CFG5-1000, CFG7-111111
	27	*/
	28
	29	/*
	30	* Configure audio route as :-
	31	* $ amixer sset 'DAC1' on,on
	32	* $ amixer sset 'Right Headphone Mux' 'DAC'
	33	* $ amixer sset 'Left Headphone Mux' 'DAC'
	34	* $ amixer sset 'DAC1R Mixer AIF1.1' on
	35	* $ amixer sset 'DAC1L Mixer AIF1.1' on
	36	* $ amixer sset 'IN2L' on
	37	* $ amixer sset 'IN2L PGA IN2LN' on
	38	* $ amixer sset 'MIXINL IN2L' on
	39	* $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
	40	* $ amixer sset 'IN2R' on
	41	* $ amixer sset 'IN2R PGA IN2RN' on
	42	* $ amixer sset 'MIXINR IN2R' on
	43	* $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
	44	*/
	45
	46	/* SMDK has a 16.9344MHZ crystal attached to WM8994 */
	47	#define SMDK_WM8994_FREQ 16934400
	48
	49	static int smdk_wm8994_pcm_hw_params(struct snd_pcm_substream *substream,
	50	struct snd_pcm_hw_params *params)
	51	{
	52	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	53	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	54	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	55	unsigned long mclk_freq;
	56	int rfs, ret;
	57
	58	switch(params_rate(params)) {
	59	case 8000:
	60	rfs = 512;
	61	break;
	62	default:
	63	dev_err(cpu_dai->dev, "%s:%d Sampling Rate %u not supported!\n",
	64	__func__, __LINE__, params_rate(params));
	65	return -EINVAL;
	66	}
	67
	68	mclk_freq = params_rate(params) * rfs;
	69
d2ec3aba SK	70	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
	71	mclk_freq, SND_SOC_CLOCK_IN);
	72	if (ret < 0)
	73	return ret;
	74
	75	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
	76	SMDK_WM8994_FREQ, mclk_freq);
	77	if (ret < 0)
	78	return ret;
	79
	80	/* Set PCM source clock on CPU */
	81	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX,
	82	mclk_freq, SND_SOC_CLOCK_IN);
	83	if (ret < 0)
	84	return ret;
	85
	86	/* Set SCLK_DIV for making bclk */
	87	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs);
	88	if (ret < 0)
	89	return ret;
	90
	91	return 0;
	92	}
	93
	94	static struct snd_soc_ops smdk_wm8994_pcm_ops = {
	95	.hw_params = smdk_wm8994_pcm_hw_params,
	96	};
	97
	98	static struct snd_soc_dai_link smdk_dai[] = {
	99	{
	100	.name = "WM8994 PAIF PCM",
	101	.stream_name = "Primary PCM",
	102	.cpu_dai_name = "samsung-pcm.0",
	103	.codec_dai_name = "wm8994-aif1",
a08485d8	104	.platform_name = "samsung-pcm.0",
d2ec3aba	105	.codec_name = "wm8994-codec",
fce20bf8 LPC	106	.dai_fmt = SND_SOC_DAIFMT_DSP_B \| SND_SOC_DAIFMT_IB_NF \|
fce20bf8 LPC	107	SND_SOC_DAIFMT_CBS_CFS,
d2ec3aba SK	108	.ops = &smdk_wm8994_pcm_ops,
	109	},
	110	};
	111
	112	static struct snd_soc_card smdk_pcm = {
	113	.name = "SMDK-PCM",
095d79dc	114	.owner = THIS_MODULE,
d2ec3aba SK	115	.dai_link = smdk_dai,
	116	.num_links = 1,
	117	};
	118
fdca21ad	119	static int snd_smdk_probe(struct platform_device *pdev)
d2ec3aba SK	120	{
	121	int ret = 0;
	122
	123	smdk_pcm.dev = &pdev->dev;
c583883e TB	124	ret = devm_snd_soc_register_card(&pdev->dev, &smdk_pcm);
c583883e TB	125	if (ret)
d2ec3aba	126	dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret);
d2ec3aba	127
c583883e	128	return ret;
d2ec3aba SK	129	}
	130
	131	static struct platform_driver snd_smdk_driver = {
	132	.driver = {
d2ec3aba SK	133	.name = "samsung-smdk-pcm",
	134	},
	135	.probe = snd_smdk_probe,
d2ec3aba SK	136	};
d2ec3aba SK	137
1175f711	138	module_platform_driver(snd_smdk_driver);
d2ec3aba SK	139
	140	MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>");
	141	MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM");
	142	MODULE_LICENSE("GPL");