Commit 7fb290d0 authored by Liam Girdwood's avatar Liam Girdwood Committed by Jaroslav Kysela
Browse files

[ALSA] ASoC pxa2xx Spitz machine support 



This patch adds Alsa audio support to the Sharp Zaurus SL-C1000/SL-C3x00
(Akita/Spitz) machines.
From: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarLiam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent a1eb4b3c

sound/soc/pxa/spitz.c

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+374 −0
Original line number Diff line number Diff line 
/*

 * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita

 *

 * Copyright 2005 Wolfson Microelectronics PLC.

 * Copyright 2005 Openedhand Ltd.

 *

 * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>

 *          Richard Purdie <richard@openedhand.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.

 *

 *  Revision history

 *    30th Nov 2005   Initial version.

 *

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/timer.h>

#include <linux/interrupt.h>

#include <linux/platform_device.h>

#include <sound/driver.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>



#include <asm/mach-types.h>

#include <asm/hardware/scoop.h>

#include <asm/arch/pxa-regs.h>

#include <asm/arch/hardware.h>

#include <asm/arch/akita.h>

#include <asm/arch/spitz.h>

#include <asm/mach-types.h>

#include "../codecs/wm8750.h"

#include "pxa2xx-pcm.h"



#define SPITZ_HP        0

#define SPITZ_MIC       1

#define SPITZ_LINE      2

#define SPITZ_HEADSET   3

#define SPITZ_HP_OFF    4

#define SPITZ_SPK_ON    0

#define SPITZ_SPK_OFF   1



 /* audio clock in Hz - rounded from 12.235MHz */

#define SPITZ_AUDIO_CLOCK 12288000



static int spitz_jack_func;

static int spitz_spk_func;



static void spitz_ext_control(struct snd_soc_codec *codec)

{

	if (spitz_spk_func == SPITZ_SPK_ON)

		snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);

	else

		snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);



	/* set up jack connection */

	switch (spitz_jack_func) {

	case SPITZ_HP:

		/* enable and unmute hp jack, disable mic bias */

		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);

		break;

	case SPITZ_MIC:

		/* enable mic jack and bias, mute hp */

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);

		break;

	case SPITZ_LINE:

		/* enable line jack, disable mic bias and mute hp */

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);

		break;

	case SPITZ_HEADSET:

		/* enable and unmute headset jack enable mic bias, mute L hp */

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);

		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);

		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);

		break;

	case SPITZ_HP_OFF:



		/* jack removed, everything off */

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);

		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);

		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);

		break;

	}

	snd_soc_dapm_sync_endpoints(codec);

}



static int spitz_startup(struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_codec *codec = rtd->socdev->codec;



	/* check the jack status at stream startup */

	spitz_ext_control(codec);

	return 0;

}



static struct snd_soc_ops spitz_ops = {

	.startup = spitz_startup,

};



static int spitz_get_jack(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	ucontrol->value.integer.value[0] = spitz_jack_func;

	return 0;

}



static int spitz_set_jack(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);



	if (spitz_jack_func == ucontrol->value.integer.value[0])

		return 0;



	spitz_jack_func = ucontrol->value.integer.value[0];

	spitz_ext_control(codec);

	return 1;

}



static int spitz_get_spk(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	ucontrol->value.integer.value[0] = spitz_spk_func;

	return 0;

}



static int spitz_set_spk(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);



	if (spitz_spk_func == ucontrol->value.integer.value[0])

		return 0;



	spitz_spk_func = ucontrol->value.integer.value[0];

	spitz_ext_control(codec);

	return 1;

}



static int spitz_mic_bias(struct snd_soc_dapm_widget *w, int event)

{

	if (machine_is_borzoi() || machine_is_spitz()) {

		if (SND_SOC_DAPM_EVENT_ON(event))

			set_scoop_gpio(&spitzscoop2_device.dev,

				SPITZ_SCP2_MIC_BIAS);

		else

			reset_scoop_gpio(&spitzscoop2_device.dev,

				SPITZ_SCP2_MIC_BIAS);

	}



	if (machine_is_akita()) {

		if (SND_SOC_DAPM_EVENT_ON(event))

			akita_set_ioexp(&akitaioexp_device.dev,

				AKITA_IOEXP_MIC_BIAS);

		else

			akita_reset_ioexp(&akitaioexp_device.dev,

				AKITA_IOEXP_MIC_BIAS);

	}

	return 0;

}



/* spitz machine dapm widgets */

static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {

	SND_SOC_DAPM_HP("Headphone Jack", NULL),

	SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),

	SND_SOC_DAPM_SPK("Ext Spk", NULL),

	SND_SOC_DAPM_LINE("Line Jack", NULL),



	/* headset is a mic and mono headphone */

	SND_SOC_DAPM_HP("Headset Jack", NULL),

};



/* Spitz machine audio_map */

static const char *audio_map[][3] = {



	/* headphone connected to LOUT1, ROUT1 */

	{"Headphone Jack", NULL, "LOUT1"},

	{"Headphone Jack", NULL, "ROUT1"},



	/* headset connected to ROUT1 and LINPUT1 with bias (def below) */

	{"Headset Jack", NULL, "ROUT1"},



	/* ext speaker connected to LOUT2, ROUT2  */

	{"Ext Spk", NULL , "ROUT2"},

	{"Ext Spk", NULL , "LOUT2"},



	/* mic is connected to input 1 - with bias */

	{"LINPUT1", NULL, "Mic Bias"},

	{"Mic Bias", NULL, "Mic Jack"},



	/* line is connected to input 1 - no bias */

	{"LINPUT1", NULL, "Line Jack"},



	{NULL, NULL, NULL},

};



static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",

	"Off"};

static const char *spk_function[] = {"On", "Off"};

static const struct soc_enum spitz_enum[] = {

	SOC_ENUM_SINGLE_EXT(5, jack_function),

	SOC_ENUM_SINGLE_EXT(2, spk_function),

};



static const struct snd_kcontrol_new wm8750_spitz_controls[] = {

	SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,

		spitz_set_jack),

	SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,

		spitz_set_spk),

};



/*

 * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device

 */

static int spitz_wm8750_init(struct snd_soc_codec *codec)

{

	int i, err;



	/* NC codec pins */

	snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);

	snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);

	snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);

	snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);

	snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);

	snd_soc_dapm_set_endpoint(codec, "OUT3", 0);

	snd_soc_dapm_set_endpoint(codec, "MONO", 0);



	/* Add spitz specific controls */

	for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {

		err = snd_ctl_add(codec->card,

			snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));

		if (err < 0)

			return err;

	}



	/* Add spitz specific widgets */

	for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {

		snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);

	}



	/* Set up spitz specific audio path audio_map */

	for (i = 0; audio_map[i][0] != NULL; i++) {

		snd_soc_dapm_connect_input(codec, audio_map[i][0],

			audio_map[i][1], audio_map[i][2]);

	}



	snd_soc_dapm_sync_endpoints(codec);

	return 0;

}



static unsigned int spitz_config_sysclk(struct snd_soc_pcm_runtime *rtd,

	struct snd_soc_clock_info *info)

{

	if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {

		/* pxa2xx is i2s master  */

		switch (info->rate) {

		case 11025:

		case 22050:

		case 44100:

		case 88200:

			/* configure codec digital filters

			 * for 11.025, 22.05, 44.1, 88.2 */

			rtd->codec_dai->config_sysclk(rtd->codec_dai, info,

				11289600);

		break;

		default:

			/* configure codec digital filters for all other rates */

			rtd->codec_dai->config_sysclk(rtd->codec_dai, info,

				SPITZ_AUDIO_CLOCK);

		break;

		}

		/* configure pxa2xx i2s interface clocks as master */

		return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,

			SPITZ_AUDIO_CLOCK);

	} else {

		/* codec is i2s master - only configure codec DAI clock */

		return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,

			SPITZ_AUDIO_CLOCK);

	}

}



/* spitz digital audio interface glue - connects codec <--> CPU */

static struct snd_soc_dai_link spitz_dai = {

	.name = "wm8750",

	.stream_name = "WM8750",

	.cpu_dai = &pxa_i2s_dai,

	.codec_dai = &wm8750_dai,

	.init = spitz_wm8750_init,

	.config_sysclk = spitz_config_sysclk,

};



/* spitz audio machine driver */

static struct snd_soc_machine snd_soc_machine_spitz = {

	.name = "Spitz",

	.dai_link = &spitz_dai,

	.num_links = 1,

	.ops = &spitz_ops,

};



/* spitz audio private data */

static struct wm8750_setup_data spitz_wm8750_setup = {

	.i2c_address = 0x1b,

};



/* spitz audio subsystem */

static struct snd_soc_device spitz_snd_devdata = {

	.machine = &snd_soc_machine_spitz,

	.platform = &pxa2xx_soc_platform,

	.codec_dev = &soc_codec_dev_wm8750,

	.codec_data = &spitz_wm8750_setup,

};



static struct platform_device *spitz_snd_device;



static int __init spitz_init(void)

{

	int ret;



	if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))

		return -ENODEV;



	spitz_snd_device = platform_device_alloc("soc-audio", -1);

	if (!spitz_snd_device)

		return -ENOMEM;



	platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);

	spitz_snd_devdata.dev = &spitz_snd_device->dev;

	ret = platform_device_add(spitz_snd_device);



	if (ret)

		platform_device_put(spitz_snd_device);



	return ret;

}



static void __exit spitz_exit(void)

{

	platform_device_unregister(spitz_snd_device);

}



module_init(spitz_init);

module_exit(spitz_exit);



MODULE_AUTHOR("Richard Purdie");

MODULE_DESCRIPTION("ALSA SoC Spitz");

MODULE_LICENSE("GPL");