sound/soc/samsung/smdk_wm8580.c - kernel/panda - Git at Google

 /*
  *  smdk_wm8580.c
  *
  *  Copyright (c) 2009 Samsung Electronics Co. Ltd
  *  Author: Jaswinder Singh <jassi.brar@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_params.h>

 #include <asm/mach-types.h>

 #include "../codecs/wm8580.h"
 #include "i2s.h"

 /*
  * Default CFG switch settings to use this driver:
  *
  *   SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
  */

 /* SMDK has a 12MHZ crystal attached to WM8580 */
 #define SMDK_WM8580_FREQ 12000000

 static int smdk_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->cpu_dai;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	unsigned int pll_out;
 	int bfs, rfs, ret;

 	switch (params_format(params)) {
 	case SNDRV_PCM_FORMAT_U8:
 	case SNDRV_PCM_FORMAT_S8:
 		bfs = 16;
 		break;
 	case SNDRV_PCM_FORMAT_U16_LE:
 	case SNDRV_PCM_FORMAT_S16_LE:
 		bfs = 32;
 		break;
 	default:
 		return -EINVAL;
 	}

 	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
 	 * This criterion can't be met if we request PLL output
 	 * as {8000x256, 64000x256, 11025x256}Hz.
 	 * As a wayout, we rather change rfs to a minimum value that
 	 * results in (params_rate(params) * rfs), and itself, acceptable
 	 * to both - the CODEC and the CPU.
 	 */
 	switch (params_rate(params)) {
 	case 16000:
 	case 22050:
 	case 32000:
 	case 44100:
 	case 48000:
 	case 88200:
 	case 96000:
 		rfs = 256;
 		break;
 	case 64000:
 		rfs = 384;
 		break;
 	case 8000:
 	case 11025:
 		rfs = 512;
 		break;
 	default:
 		return -EINVAL;
 	}
 	pll_out = params_rate(params) * rfs;

 	/* Set the Codec DAI configuration */
 	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
 					 | SND_SOC_DAIFMT_NB_NF
 					 | SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0)
 		return ret;

 	/* Set the AP DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
 					 | SND_SOC_DAIFMT_NB_NF
 					 | SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0)
 		return ret;

 	/* Set WM8580 to drive MCLK from its PLLA */
 	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
 					WM8580_CLKSRC_PLLA);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
 					SMDK_WM8580_FREQ, pll_out);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
 				     pll_out, SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 /*
  * SMDK WM8580 DAI operations.
  */
 static struct snd_soc_ops smdk_ops = {
 	.hw_params = smdk_hw_params,
 };

 /* SMDK Playback widgets */
 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
 	SND_SOC_DAPM_HP("Front", NULL),
 	SND_SOC_DAPM_HP("Center+Sub", NULL),
 	SND_SOC_DAPM_HP("Rear", NULL),
 };

 /* SMDK Capture widgets */
 static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
 	SND_SOC_DAPM_MIC("MicIn", NULL),
 	SND_SOC_DAPM_LINE("LineIn", NULL),
 };

 /* SMDK-PAIFTX connections */
 static const struct snd_soc_dapm_route audio_map_tx[] = {
 	/* MicIn feeds AINL */
 	{"AINL", NULL, "MicIn"},

 	/* LineIn feeds AINL/R */
 	{"AINL", NULL, "LineIn"},
 	{"AINR", NULL, "LineIn"},
 };

 /* SMDK-PAIFRX connections */
 static const struct snd_soc_dapm_route audio_map_rx[] = {
 	/* Front Left/Right are fed VOUT1L/R */
 	{"Front", NULL, "VOUT1L"},
 	{"Front", NULL, "VOUT1R"},

 	/* Center/Sub are fed VOUT2L/R */
 	{"Center+Sub", NULL, "VOUT2L"},
 	{"Center+Sub", NULL, "VOUT2R"},

 	/* Rear Left/Right are fed VOUT3L/R */
 	{"Rear", NULL, "VOUT3L"},
 	{"Rear", NULL, "VOUT3R"},
 };

 static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;

 	/* Add smdk specific Capture widgets */
 	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
 				  ARRAY_SIZE(wm8580_dapm_widgets_cpt));

 	/* Set up PAIFTX audio path */
 	snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));

 	/* Enabling the microphone requires the fitting of a 0R
 	 * resistor to connect the line from the microphone jack.
 	 */
 	snd_soc_dapm_disable_pin(dapm, "MicIn");

 	/* signal a DAPM event */
 	snd_soc_dapm_sync(dapm);

 	return 0;
 }

 static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;

 	/* Add smdk specific Playback widgets */
 	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
 				  ARRAY_SIZE(wm8580_dapm_widgets_pbk));

 	/* Set up PAIFRX audio path */
 	snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));

 	/* signal a DAPM event */
 	snd_soc_dapm_sync(dapm);

 	return 0;
 }

 enum {
 	PRI_PLAYBACK = 0,
 	PRI_CAPTURE,
 	SEC_PLAYBACK,
 };

 static struct snd_soc_dai_link smdk_dai[] = {
 	[PRI_PLAYBACK] = { /* Primary Playback i/f */
 		.name = "WM8580 PAIF RX",
 		.stream_name = "Playback",
 		.cpu_dai_name = "samsung-i2s.0",
 		.codec_dai_name = "wm8580-hifi-playback",
 		.platform_name = "samsung-audio",
 		.codec_name = "wm8580-codec.0-001b",
 		.init = smdk_wm8580_init_paifrx,
 		.ops = &smdk_ops,
 	},
 	[PRI_CAPTURE] = { /* Primary Capture i/f */
 		.name = "WM8580 PAIF TX",
 		.stream_name = "Capture",
 		.cpu_dai_name = "samsung-i2s.0",
 		.codec_dai_name = "wm8580-hifi-capture",
 		.platform_name = "samsung-audio",
 		.codec_name = "wm8580-codec.0-001b",
 		.init = smdk_wm8580_init_paiftx,
 		.ops = &smdk_ops,
 	},
 	[SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
 		.name = "Sec_FIFO TX",
 		.stream_name = "Playback",
 		.cpu_dai_name = "samsung-i2s.x",
 		.codec_dai_name = "wm8580-hifi-playback",
 		.platform_name = "samsung-audio",
 		.codec_name = "wm8580-codec.0-001b",
 		.init = smdk_wm8580_init_paifrx,
 		.ops = &smdk_ops,
 	},
 };

 static struct snd_soc_card smdk = {
 	.name = "SMDK-I2S",
 	.dai_link = smdk_dai,
 	.num_links = 2,
 };

 static struct platform_device *smdk_snd_device;

 static int __init smdk_audio_init(void)
 {
 	int ret;
 	char *str;

 	if (machine_is_smdkc100()
 			|| machine_is_smdkv210() || machine_is_smdkc110()) {
 		smdk.num_links = 3;
 		/* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
 		str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
 		str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
 	} else if (machine_is_smdk6410()) {
 		str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
 		str[strlen(str) - 1] = '2';
 		str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
 		str[strlen(str) - 1] = '2';
 	}

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

 	platform_set_drvdata(smdk_snd_device, &smdk);
 	ret = platform_device_add(smdk_snd_device);

 	if (ret)
 		platform_device_put(smdk_snd_device);

 	return ret;
 }
 module_init(smdk_audio_init);

 static void __exit smdk_audio_exit(void)
 {
 	platform_device_unregister(smdk_snd_device);
 }
 module_exit(smdk_audio_exit);

 MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
 MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
 MODULE_LICENSE("GPL");
	/*
	* smdk_wm8580.c
	*
	* Copyright (c) 2009 Samsung Electronics Co. Ltd
	* Author: Jaswinder Singh <jassi.brar@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_params.h>

	#include <asm/mach-types.h>

	#include "../codecs/wm8580.h"
	#include "i2s.h"

	/*
	* Default CFG switch settings to use this driver:
	*
	* SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
	*/

	/* SMDK has a 12MHZ crystal attached to WM8580 */
	#define SMDK_WM8580_FREQ 12000000

	static int smdk_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->cpu_dai;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	unsigned int pll_out;
	int bfs, rfs, ret;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_U8:
	case SNDRV_PCM_FORMAT_S8:
	bfs = 16;
	break;
	case SNDRV_PCM_FORMAT_U16_LE:
	case SNDRV_PCM_FORMAT_S16_LE:
	bfs = 32;
	break;
	default:
	return -EINVAL;
	}

	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	* This criterion can't be met if we request PLL output
	* as {8000x256, 64000x256, 11025x256}Hz.
	* As a wayout, we rather change rfs to a minimum value that
	* results in (params_rate(params) * rfs), and itself, acceptable
	* to both - the CODEC and the CPU.
	*/
	switch (params_rate(params)) {
	case 16000:
	case 22050:
	case 32000:
	case 44100:
	case 48000:
	case 88200:
	case 96000:
	rfs = 256;
	break;
	case 64000:
	rfs = 384;
	break;
	case 8000:
	case 11025:
	rfs = 512;
	break;
	default:
	return -EINVAL;
	}
	pll_out = params_rate(params) * rfs;

	/* Set the Codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	\| SND_SOC_DAIFMT_NB_NF
	\| SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
	return ret;

	/* Set the AP DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	\| SND_SOC_DAIFMT_NB_NF
	\| SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
	return ret;

	/* Set WM8580 to drive MCLK from its PLLA */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
	WM8580_CLKSRC_PLLA);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
	SMDK_WM8580_FREQ, pll_out);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
	pll_out, SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	return 0;
	}

	/*
	* SMDK WM8580 DAI operations.
	*/
	static struct snd_soc_ops smdk_ops = {
	.hw_params = smdk_hw_params,
	};

	/* SMDK Playback widgets */
	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
	SND_SOC_DAPM_HP("Front", NULL),
	SND_SOC_DAPM_HP("Center+Sub", NULL),
	SND_SOC_DAPM_HP("Rear", NULL),
	};

	/* SMDK Capture widgets */
	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
	SND_SOC_DAPM_MIC("MicIn", NULL),
	SND_SOC_DAPM_LINE("LineIn", NULL),
	};

	/* SMDK-PAIFTX connections */
	static const struct snd_soc_dapm_route audio_map_tx[] = {
	/* MicIn feeds AINL */
	{"AINL", NULL, "MicIn"},

	/* LineIn feeds AINL/R */
	{"AINL", NULL, "LineIn"},
	{"AINR", NULL, "LineIn"},
	};

	/* SMDK-PAIFRX connections */
	static const struct snd_soc_dapm_route audio_map_rx[] = {
	/* Front Left/Right are fed VOUT1L/R */
	{"Front", NULL, "VOUT1L"},
	{"Front", NULL, "VOUT1R"},

	/* Center/Sub are fed VOUT2L/R */
	{"Center+Sub", NULL, "VOUT2L"},
	{"Center+Sub", NULL, "VOUT2R"},

	/* Rear Left/Right are fed VOUT3L/R */
	{"Rear", NULL, "VOUT3L"},
	{"Rear", NULL, "VOUT3R"},
	};

	static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	/* Add smdk specific Capture widgets */
	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
	ARRAY_SIZE(wm8580_dapm_widgets_cpt));

	/* Set up PAIFTX audio path */
	snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));

	/* Enabling the microphone requires the fitting of a 0R
	* resistor to connect the line from the microphone jack.
	*/
	snd_soc_dapm_disable_pin(dapm, "MicIn");

	/* signal a DAPM event */
	snd_soc_dapm_sync(dapm);

	return 0;
	}

	static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	/* Add smdk specific Playback widgets */
	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
	ARRAY_SIZE(wm8580_dapm_widgets_pbk));

	/* Set up PAIFRX audio path */
	snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));

	/* signal a DAPM event */
	snd_soc_dapm_sync(dapm);

	return 0;
	}

	enum {
	PRI_PLAYBACK = 0,
	PRI_CAPTURE,
	SEC_PLAYBACK,
	};

	static struct snd_soc_dai_link smdk_dai[] = {
	[PRI_PLAYBACK] = { /* Primary Playback i/f */
	.name = "WM8580 PAIF RX",
	.stream_name = "Playback",
	.cpu_dai_name = "samsung-i2s.0",
	.codec_dai_name = "wm8580-hifi-playback",
	.platform_name = "samsung-audio",
	.codec_name = "wm8580-codec.0-001b",
	.init = smdk_wm8580_init_paifrx,
	.ops = &smdk_ops,
	},
	[PRI_CAPTURE] = { /* Primary Capture i/f */
	.name = "WM8580 PAIF TX",
	.stream_name = "Capture",
	.cpu_dai_name = "samsung-i2s.0",
	.codec_dai_name = "wm8580-hifi-capture",
	.platform_name = "samsung-audio",
	.codec_name = "wm8580-codec.0-001b",
	.init = smdk_wm8580_init_paiftx,
	.ops = &smdk_ops,
	},
	[SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
	.name = "Sec_FIFO TX",
	.stream_name = "Playback",
	.cpu_dai_name = "samsung-i2s.x",
	.codec_dai_name = "wm8580-hifi-playback",
	.platform_name = "samsung-audio",
	.codec_name = "wm8580-codec.0-001b",
	.init = smdk_wm8580_init_paifrx,
	.ops = &smdk_ops,
	},
	};

	static struct snd_soc_card smdk = {
	.name = "SMDK-I2S",
	.dai_link = smdk_dai,
	.num_links = 2,
	};

	static struct platform_device *smdk_snd_device;

	static int __init smdk_audio_init(void)
	{
	int ret;
	char *str;

	if (machine_is_smdkc100()
	\|\| machine_is_smdkv210() \|\| machine_is_smdkc110()) {
	smdk.num_links = 3;
	/* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
	str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
	str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
	} else if (machine_is_smdk6410()) {
	str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
	str[strlen(str) - 1] = '2';
	str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
	str[strlen(str) - 1] = '2';
	}

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

	platform_set_drvdata(smdk_snd_device, &smdk);
	ret = platform_device_add(smdk_snd_device);

	if (ret)
	platform_device_put(smdk_snd_device);

	return ret;
	}
	module_init(smdk_audio_init);

	static void __exit smdk_audio_exit(void)
	{
	platform_device_unregister(smdk_snd_device);
	}
	module_exit(smdk_audio_exit);

	MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
	MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
	MODULE_LICENSE("GPL");