[deliverable/linux.git] / sound / soc / mid-x86 / mfld_machine.c

/*
 *  mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform
 *
 *  Copyright (C) 2010 Intel Corp
 *  Author: Vinod Koul <vinod.koul@intel.com>
 *  Author: Harsha Priya <priya.harsha@intel.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; version 2 of the License.
 *
 *  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, write to the Free Software Foundation, Inc.,
 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../codecs/sn95031.h"

#define MID_MONO 1
#define MID_STEREO 2
#define MID_MAX_CAP 5
#define MFLD_JACK_INSERT 0x04

enum soc_mic_bias_zones {
	MFLD_MV_START = 0,
	/* mic bias volutage range for Headphones*/
	MFLD_MV_HP = 400,
	/* mic bias volutage range for American Headset*/
	MFLD_MV_AM_HS = 650,
	/* mic bias volutage range for Headset*/
	MFLD_MV_HS = 2000,
	MFLD_MV_UNDEFINED,
};

static unsigned int	hs_switch;
static unsigned int	lo_dac;

struct mfld_mc_private {
	struct platform_device *socdev;
	void __iomem *int_base;
	struct snd_soc_codec *codec;
	u8 interrupt_status;
};

struct snd_soc_jack mfld_jack;

/*Headset jack detection DAPM pins */
static struct snd_soc_jack_pin mfld_jack_pins[] = {
	{
		.pin = "Headphones",
		.mask = SND_JACK_HEADPHONE,
	},
	{
		.pin = "AMIC1",
		.mask = SND_JACK_MICROPHONE,
	},
};

/* sound card controls */
static const char *headset_switch_text[] = {"Earpiece", "Headset"};

static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"};

static const struct soc_enum headset_enum =
	SOC_ENUM_SINGLE_EXT(2, headset_switch_text);

static const struct soc_enum lo_enum =
	SOC_ENUM_SINGLE_EXT(4, lo_text);

static int headset_get_switch(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = hs_switch;
	return 0;
}

static int headset_set_switch(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);

	if (ucontrol->value.integer.value[0] == hs_switch)
		return 0;

	if (ucontrol->value.integer.value[0]) {
		pr_debug("hs_set HS path\n");
		snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
		snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
	} else {
		pr_debug("hs_set EP path\n");
		snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
		snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
	}
	snd_soc_dapm_sync(&codec->dapm);
	hs_switch = ucontrol->value.integer.value[0];

	return 0;
}

static void lo_enable_out_pins(struct snd_soc_codec *codec)
{
	snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL");
	snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR");
	snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL");
	snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR");
	snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT");
	snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT");
	if (hs_switch) {
		snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
		snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
	} else {
		snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
		snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
	}
}

static int lo_get_switch(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = lo_dac;
	return 0;
}

static int lo_set_switch(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);

	if (ucontrol->value.integer.value[0] == lo_dac)
		return 0;

	/* we dont want to work with last state of lineout so just enable all
	 * pins and then disable pins not required
	 */
	lo_enable_out_pins(codec);
	switch (ucontrol->value.integer.value[0]) {
	case 0:
		pr_debug("set vibra path\n");
		snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT");
		snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT");
		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0);
		break;

	case 1:
		pr_debug("set hs  path\n");
		snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
		snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22);
		break;

	case 2:
		pr_debug("set spkr path\n");
		snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL");
		snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR");
		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44);
		break;

	case 3:
		pr_debug("set null path\n");
		snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL");
		snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR");
		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66);
		break;
	}
	snd_soc_dapm_sync(&codec->dapm);
	lo_dac = ucontrol->value.integer.value[0];
	return 0;
}

static const struct snd_kcontrol_new mfld_snd_controls[] = {
	SOC_ENUM_EXT("Playback Switch", headset_enum,
			headset_get_switch, headset_set_switch),
	SOC_ENUM_EXT("Lineout Mux", lo_enum,
			lo_get_switch, lo_set_switch),
};

static const struct snd_soc_dapm_widget mfld_widgets[] = {
	SND_SOC_DAPM_HP("Headphones", NULL),
	SND_SOC_DAPM_MIC("Mic", NULL),
};

static const struct snd_soc_dapm_route mfld_map[] = {
	{"Headphones", NULL, "HPOUTR"},
	{"Headphones", NULL, "HPOUTL"},
	{"Mic", NULL, "AMIC1"},
};

static void mfld_jack_check(unsigned int intr_status)
{
	struct mfld_jack_data jack_data;

	jack_data.mfld_jack = &mfld_jack;
	jack_data.intr_id = intr_status;

	sn95031_jack_detection(&jack_data);
	/* TODO: add american headset detection post gpiolib support */
}

static int mfld_init(struct snd_soc_pcm_runtime *runtime)
{
	struct snd_soc_codec *codec = runtime->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret_val;

	/* Add jack sense widgets */
	snd_soc_dapm_new_controls(dapm, mfld_widgets, ARRAY_SIZE(mfld_widgets));

	/* Set up the map */
	snd_soc_dapm_add_routes(dapm, mfld_map, ARRAY_SIZE(mfld_map));

	/* always connected */
	snd_soc_dapm_enable_pin(dapm, "Headphones");
	snd_soc_dapm_enable_pin(dapm, "Mic");
	snd_soc_dapm_sync(dapm);

	ret_val = snd_soc_add_controls(codec, mfld_snd_controls,
				ARRAY_SIZE(mfld_snd_controls));
	if (ret_val) {
		pr_err("soc_add_controls failed %d", ret_val);
		return ret_val;
	}
	/* default is earpiece pin, userspace sets it explcitly */
	snd_soc_dapm_disable_pin(dapm, "Headphones");
	/* default is lineout NC, userspace sets it explcitly */
	snd_soc_dapm_disable_pin(dapm, "LINEOUTL");
	snd_soc_dapm_disable_pin(dapm, "LINEOUTR");
	lo_dac = 3;
	hs_switch = 0;
	/* we dont use linein in this so set to NC */
	snd_soc_dapm_disable_pin(dapm, "LINEINL");
	snd_soc_dapm_disable_pin(dapm, "LINEINR");
	snd_soc_dapm_sync(dapm);

	/* Headset and button jack detection */
	ret_val = snd_soc_jack_new(codec, "Intel(R) MID Audio Jack",
			SND_JACK_HEADSET | SND_JACK_BTN_0 |
			SND_JACK_BTN_1, &mfld_jack);
	if (ret_val) {
		pr_err("jack creation failed\n");
		return ret_val;
	}

	ret_val = snd_soc_jack_add_pins(&mfld_jack,
			ARRAY_SIZE(mfld_jack_pins), mfld_jack_pins);
	if (ret_val) {
		pr_err("adding jack pins failed\n");
		return ret_val;
	}

	/* we want to check if anything is inserted at boot,
	 * so send a fake event to codec and it will read adc
	 * to find if anything is there or not */
	mfld_jack_check(MFLD_JACK_INSERT);
	return ret_val;
}

struct snd_soc_dai_link mfld_msic_dailink[] = {
	{
		.name = "Medfield Headset",
		.stream_name = "Headset",
		.cpu_dai_name = "Headset-cpu-dai",
		.codec_dai_name = "SN95031 Headset",
		.codec_name = "sn95031",
		.platform_name = "sst-platform",
		.init = mfld_init,
	},
	{
		.name = "Medfield Speaker",
		.stream_name = "Speaker",
		.cpu_dai_name = "Speaker-cpu-dai",
		.codec_dai_name = "SN95031 Speaker",
		.codec_name = "sn95031",
		.platform_name = "sst-platform",
		.init = NULL,
	},
	{
		.name = "Medfield Vibra",
		.stream_name = "Vibra1",
		.cpu_dai_name = "Vibra1-cpu-dai",
		.codec_dai_name = "SN95031 Vibra1",
		.codec_name = "sn95031",
		.platform_name = "sst-platform",
		.init = NULL,
	},
	{
		.name = "Medfield Haptics",
		.stream_name = "Vibra2",
		.cpu_dai_name = "Vibra2-cpu-dai",
		.codec_dai_name = "SN95031 Vibra2",
		.codec_name = "sn95031",
		.platform_name = "sst-platform",
		.init = NULL,
	},
};

/* SoC card */
static struct snd_soc_card snd_soc_card_mfld = {
	.name = "medfield_audio",
	.dai_link = mfld_msic_dailink,
	.num_links = ARRAY_SIZE(mfld_msic_dailink),
};

static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev)
{
	struct mfld_mc_private *mc_private = (struct mfld_mc_private *) dev;

	memcpy_fromio(&mc_private->interrupt_status,
			((void *)(mc_private->int_base)),
			sizeof(u8));
	return IRQ_WAKE_THREAD;
}

static irqreturn_t snd_mfld_jack_detection(int irq, void *data)
{
	struct mfld_mc_private *mc_drv_ctx = (struct mfld_mc_private *) data;

	if (mfld_jack.codec == NULL)
		return IRQ_HANDLED;
	mfld_jack_check(mc_drv_ctx->interrupt_status);

	return IRQ_HANDLED;
}

static int __devinit snd_mfld_mc_probe(struct platform_device *pdev)
{
	int ret_val = 0, irq;
	struct mfld_mc_private *mc_drv_ctx;
	struct resource *irq_mem;

	pr_debug("snd_mfld_mc_probe called\n");

	/* retrive the irq number */
	irq = platform_get_irq(pdev, 0);

	/* audio interrupt base of SRAM location where
	 * interrupts are stored by System FW */
	mc_drv_ctx = kzalloc(sizeof(*mc_drv_ctx), GFP_ATOMIC);
	if (!mc_drv_ctx) {
		pr_err("allocation failed\n");
		return -ENOMEM;
	}

	irq_mem = platform_get_resource_byname(
				pdev, IORESOURCE_MEM, "IRQ_BASE");
	if (!irq_mem) {
		pr_err("no mem resource given\n");
		ret_val = -ENODEV;
		goto unalloc;
	}
	mc_drv_ctx->int_base = ioremap_nocache(irq_mem->start,
					resource_size(irq_mem));
	if (!mc_drv_ctx->int_base) {
		pr_err("Mapping of cache failed\n");
		ret_val = -ENOMEM;
		goto unalloc;
	}
	/* register for interrupt */
	ret_val = request_threaded_irq(irq, snd_mfld_jack_intr_handler,
			snd_mfld_jack_detection,
			IRQF_SHARED, pdev->dev.driver->name, mc_drv_ctx);
	if (ret_val) {
		pr_err("cannot register IRQ\n");
		goto unalloc;
	}
	/* create soc device */
	mc_drv_ctx->socdev = platform_device_alloc("soc-audio", -1);
	if (!mc_drv_ctx->socdev) {
		pr_err("soc-audio device allocation failed\n");
		ret_val = -ENOMEM;
		goto freeirq;
	}
	platform_set_drvdata(mc_drv_ctx->socdev, &snd_soc_card_mfld);
	ret_val = platform_device_add(mc_drv_ctx->socdev);
	if (ret_val) {
		pr_err("Unable to add soc-audio device, err %d\n", ret_val);
		goto unregister;
	}
	platform_set_drvdata(pdev, mc_drv_ctx);
	pr_debug("successfully exited probe\n");
	return ret_val;

unregister:
	platform_device_put(mc_drv_ctx->socdev);
freeirq:
	free_irq(irq, mc_drv_ctx);
unalloc:
	kfree(mc_drv_ctx);
	return ret_val;
}

static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
{
	struct mfld_mc_private *mc_drv_ctx = platform_get_drvdata(pdev);

	pr_debug("snd_mfld_mc_remove called\n");
	free_irq(platform_get_irq(pdev, 0), mc_drv_ctx);
	platform_device_unregister(mc_drv_ctx->socdev);
	kfree(mc_drv_ctx);
	platform_set_drvdata(pdev, NULL);
	return 0;
}

static struct platform_driver snd_mfld_mc_driver = {
	.driver = {
		.owner = THIS_MODULE,
		.name = "msic_audio",
	},
	.probe = snd_mfld_mc_probe,
	.remove = __devexit_p(snd_mfld_mc_remove),
};

static int __init snd_mfld_driver_init(void)
{
	pr_debug("snd_mfld_driver_init called\n");
	return platform_driver_register(&snd_mfld_mc_driver);
}
module_init(snd_mfld_driver_init);

static void __exit snd_mfld_driver_exit(void)
{
	pr_debug("snd_mfld_driver_exit called\n");
	platform_driver_unregister(&snd_mfld_mc_driver);
}
module_exit(snd_mfld_driver_exit);

MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver");
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:msic-audio");
Commit	Line	Data
55c72036 VK	1	/*
	2	* mfld_machine.c - ASoc Machine driver for Intel Medfield MID platform
	3	*
	4	* Copyright (C) 2010 Intel Corp
	5	* Author: Vinod Koul <vinod.koul@intel.com>
	6	* Author: Harsha Priya <priya.harsha@intel.com>
	7	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; version 2 of the License.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
	21	*
	22	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	23	*/
	24
	25	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	26
	27	#include <linux/init.h>
	28	#include <linux/device.h>
	29	#include <linux/slab.h>
42aee9b4	30	#include <linux/io.h>
55c72036 VK	31	#include <sound/pcm.h>
	32	#include <sound/pcm_params.h>
	33	#include <sound/soc.h>
42aee9b4	34	#include <sound/jack.h>
55c72036 VK	35	#include "../codecs/sn95031.h"
	36
	37	#define MID_MONO 1
	38	#define MID_STEREO 2
	39	#define MID_MAX_CAP 5
42aee9b4 VK	40	#define MFLD_JACK_INSERT 0x04
	41
	42	enum soc_mic_bias_zones {
	43	MFLD_MV_START = 0,
	44	/* mic bias volutage range for Headphones*/
	45	MFLD_MV_HP = 400,
	46	/* mic bias volutage range for American Headset*/
	47	MFLD_MV_AM_HS = 650,
	48	/* mic bias volutage range for Headset*/
	49	MFLD_MV_HS = 2000,
	50	MFLD_MV_UNDEFINED,
	51	};
55c72036 VK	52
	53	static unsigned int hs_switch;
	54	static unsigned int lo_dac;
	55
42aee9b4 VK	56	struct mfld_mc_private {
	57	struct platform_device *socdev;
	58	void __iomem *int_base;
	59	struct snd_soc_codec *codec;
	60	u8 interrupt_status;
	61	};
	62
	63	struct snd_soc_jack mfld_jack;
	64
	65	/Headset jack detection DAPM pins /
	66	static struct snd_soc_jack_pin mfld_jack_pins[] = {
	67	{
	68	.pin = "Headphones",
	69	.mask = SND_JACK_HEADPHONE,
	70	},
	71	{
	72	.pin = "AMIC1",
	73	.mask = SND_JACK_MICROPHONE,
	74	},
	75	};
	76
55c72036 VK	77	/* sound card controls */
	78	static const char *headset_switch_text[] = {"Earpiece", "Headset"};
	79
	80	static const char *lo_text[] = {"Vibra", "Headset", "IHF", "None"};
	81
	82	static const struct soc_enum headset_enum =
	83	SOC_ENUM_SINGLE_EXT(2, headset_switch_text);
	84
	85	static const struct soc_enum lo_enum =
	86	SOC_ENUM_SINGLE_EXT(4, lo_text);
	87
	88	static int headset_get_switch(struct snd_kcontrol *kcontrol,
	89	struct snd_ctl_elem_value *ucontrol)
	90	{
	91	ucontrol->value.integer.value[0] = hs_switch;
	92	return 0;
	93	}
	94
	95	static int headset_set_switch(struct snd_kcontrol *kcontrol,
	96	struct snd_ctl_elem_value *ucontrol)
	97	{
	98	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	99
	100	if (ucontrol->value.integer.value[0] == hs_switch)
	101	return 0;
	102
	103	if (ucontrol->value.integer.value[0]) {
	104	pr_debug("hs_set HS path\n");
42aee9b4	105	snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
55c72036 VK	106	snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
	107	} else {
	108	pr_debug("hs_set EP path\n");
42aee9b4	109	snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
55c72036 VK	110	snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
	111	}
	112	snd_soc_dapm_sync(&codec->dapm);
	113	hs_switch = ucontrol->value.integer.value[0];
	114
	115	return 0;
	116	}
	117
	118	static void lo_enable_out_pins(struct snd_soc_codec *codec)
	119	{
	120	snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL");
	121	snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR");
	122	snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL");
	123	snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR");
	124	snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT");
	125	snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT");
	126	if (hs_switch) {
42aee9b4	127	snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");
55c72036 VK	128	snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
55c72036 VK	129	} else {
42aee9b4	130	snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
55c72036 VK	131	snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");
	132	}
	133	}
	134
	135	static int lo_get_switch(struct snd_kcontrol *kcontrol,
	136	struct snd_ctl_elem_value *ucontrol)
	137	{
	138	ucontrol->value.integer.value[0] = lo_dac;
	139	return 0;
	140	}
	141
	142	static int lo_set_switch(struct snd_kcontrol *kcontrol,
	143	struct snd_ctl_elem_value *ucontrol)
	144	{
	145	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	146
	147	if (ucontrol->value.integer.value[0] == lo_dac)
	148	return 0;
	149
	150	/* we dont want to work with last state of lineout so just enable all
	151	* pins and then disable pins not required
	152	*/
	153	lo_enable_out_pins(codec);
	154	switch (ucontrol->value.integer.value[0]) {
	155	case 0:
	156	pr_debug("set vibra path\n");
	157	snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT");
	158	snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT");
	159	snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0);
	160	break;
	161
	162	case 1:
	163	pr_debug("set hs path\n");
42aee9b4	164	snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");
55c72036 VK	165	snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");
	166	snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22);
	167	break;
	168
	169	case 2:
	170	pr_debug("set spkr path\n");
	171	snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL");
	172	snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR");
	173	snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44);
	174	break;
	175
	176	case 3:
	177	pr_debug("set null path\n");
	178	snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL");
	179	snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR");
	180	snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66);
	181	break;
	182	}
	183	snd_soc_dapm_sync(&codec->dapm);
	184	lo_dac = ucontrol->value.integer.value[0];
	185	return 0;
	186	}
	187
	188	static const struct snd_kcontrol_new mfld_snd_controls[] = {
	189	SOC_ENUM_EXT("Playback Switch", headset_enum,
	190	headset_get_switch, headset_set_switch),
	191	SOC_ENUM_EXT("Lineout Mux", lo_enum,
	192	lo_get_switch, lo_set_switch),
	193	};
	194
42aee9b4 VK	195	static const struct snd_soc_dapm_widget mfld_widgets[] = {
	196	SND_SOC_DAPM_HP("Headphones", NULL),
	197	SND_SOC_DAPM_MIC("Mic", NULL),
	198	};
	199
	200	static const struct snd_soc_dapm_route mfld_map[] = {
	201	{"Headphones", NULL, "HPOUTR"},
	202	{"Headphones", NULL, "HPOUTL"},
	203	{"Mic", NULL, "AMIC1"},
	204	};
	205
	206	static void mfld_jack_check(unsigned int intr_status)
	207	{
	208	struct mfld_jack_data jack_data;
	209
	210	jack_data.mfld_jack = &mfld_jack;
	211	jack_data.intr_id = intr_status;
	212
	213	sn95031_jack_detection(&jack_data);
	214	/* TODO: add american headset detection post gpiolib support */
	215	}
	216
55c72036 VK	217	static int mfld_init(struct snd_soc_pcm_runtime *runtime)
	218	{
	219	struct snd_soc_codec *codec = runtime->codec;
	220	struct snd_soc_dapm_context *dapm = &codec->dapm;
	221	int ret_val;
	222
42aee9b4 VK	223	/* Add jack sense widgets */
	224	snd_soc_dapm_new_controls(dapm, mfld_widgets, ARRAY_SIZE(mfld_widgets));
	225
	226	/* Set up the map */
	227	snd_soc_dapm_add_routes(dapm, mfld_map, ARRAY_SIZE(mfld_map));
	228
	229	/* always connected */
	230	snd_soc_dapm_enable_pin(dapm, "Headphones");
	231	snd_soc_dapm_enable_pin(dapm, "Mic");
	232	snd_soc_dapm_sync(dapm);
	233
55c72036 VK	234	ret_val = snd_soc_add_controls(codec, mfld_snd_controls,
	235	ARRAY_SIZE(mfld_snd_controls));
	236	if (ret_val) {
	237	pr_err("soc_add_controls failed %d", ret_val);
	238	return ret_val;
	239	}
	240	/* default is earpiece pin, userspace sets it explcitly */
42aee9b4	241	snd_soc_dapm_disable_pin(dapm, "Headphones");
55c72036 VK	242	/* default is lineout NC, userspace sets it explcitly */
	243	snd_soc_dapm_disable_pin(dapm, "LINEOUTL");
	244	snd_soc_dapm_disable_pin(dapm, "LINEOUTR");
	245	lo_dac = 3;
	246	hs_switch = 0;
d316553a HP	247	/* we dont use linein in this so set to NC */
	248	snd_soc_dapm_disable_pin(dapm, "LINEINL");
	249	snd_soc_dapm_disable_pin(dapm, "LINEINR");
42aee9b4 VK	250	snd_soc_dapm_sync(dapm);
	251
	252	/* Headset and button jack detection */
	253	ret_val = snd_soc_jack_new(codec, "Intel(R) MID Audio Jack",
	254	SND_JACK_HEADSET \| SND_JACK_BTN_0 \|
	255	SND_JACK_BTN_1, &mfld_jack);
	256	if (ret_val) {
	257	pr_err("jack creation failed\n");
	258	return ret_val;
	259	}
	260
	261	ret_val = snd_soc_jack_add_pins(&mfld_jack,
	262	ARRAY_SIZE(mfld_jack_pins), mfld_jack_pins);
	263	if (ret_val) {
	264	pr_err("adding jack pins failed\n");
	265	return ret_val;
	266	}
	267
	268	/* we want to check if anything is inserted at boot,
	269	* so send a fake event to codec and it will read adc
	270	* to find if anything is there or not */
	271	mfld_jack_check(MFLD_JACK_INSERT);
	272	return ret_val;
55c72036 VK	273	}
	274
	275	struct snd_soc_dai_link mfld_msic_dailink[] = {
	276	{
	277	.name = "Medfield Headset",
	278	.stream_name = "Headset",
	279	.cpu_dai_name = "Headset-cpu-dai",
	280	.codec_dai_name = "SN95031 Headset",
	281	.codec_name = "sn95031",
	282	.platform_name = "sst-platform",
	283	.init = mfld_init,
	284	},
	285	{
	286	.name = "Medfield Speaker",
	287	.stream_name = "Speaker",
	288	.cpu_dai_name = "Speaker-cpu-dai",
	289	.codec_dai_name = "SN95031 Speaker",
	290	.codec_name = "sn95031",
	291	.platform_name = "sst-platform",
	292	.init = NULL,
	293	},
	294	{
	295	.name = "Medfield Vibra",
	296	.stream_name = "Vibra1",
	297	.cpu_dai_name = "Vibra1-cpu-dai",
	298	.codec_dai_name = "SN95031 Vibra1",
	299	.codec_name = "sn95031",
	300	.platform_name = "sst-platform",
	301	.init = NULL,
	302	},
	303	{
	304	.name = "Medfield Haptics",
	305	.stream_name = "Vibra2",
	306	.cpu_dai_name = "Vibra2-cpu-dai",
	307	.codec_dai_name = "SN95031 Vibra2",
	308	.codec_name = "sn95031",
	309	.platform_name = "sst-platform",
	310	.init = NULL,
	311	},
	312	};
	313
	314	/* SoC card */
	315	static struct snd_soc_card snd_soc_card_mfld = {
	316	.name = "medfield_audio",
	317	.dai_link = mfld_msic_dailink,
	318	.num_links = ARRAY_SIZE(mfld_msic_dailink),
	319	};
	320
42aee9b4 VK	321	static irqreturn_t snd_mfld_jack_intr_handler(int irq, void *dev)
	322	{
	323	struct mfld_mc_private mc_private = (struct mfld_mc_private ) dev;
	324
	325	memcpy_fromio(&mc_private->interrupt_status,
	326	((void *)(mc_private->int_base)),
	327	sizeof(u8));
	328	return IRQ_WAKE_THREAD;
	329	}
	330
	331	static irqreturn_t snd_mfld_jack_detection(int irq, void *data)
	332	{
	333	struct mfld_mc_private mc_drv_ctx = (struct mfld_mc_private ) data;
	334
	335	if (mfld_jack.codec == NULL)
	336	return IRQ_HANDLED;
	337	mfld_jack_check(mc_drv_ctx->interrupt_status);
	338
	339	return IRQ_HANDLED;
	340	}
	341
55c72036 VK	342	static int __devinit snd_mfld_mc_probe(struct platform_device *pdev)
55c72036 VK	343	{
42aee9b4 VK	344	int ret_val = 0, irq;
	345	struct mfld_mc_private *mc_drv_ctx;
	346	struct resource *irq_mem;
55c72036 VK	347
	348	pr_debug("snd_mfld_mc_probe called\n");
	349
42aee9b4 VK	350	/* retrive the irq number */
	351	irq = platform_get_irq(pdev, 0);
	352
	353	/* audio interrupt base of SRAM location where
	354	* interrupts are stored by System FW */
	355	mc_drv_ctx = kzalloc(sizeof(*mc_drv_ctx), GFP_ATOMIC);
	356	if (!mc_drv_ctx) {
	357	pr_err("allocation failed\n");
55c72036 VK	358	return -ENOMEM;
55c72036 VK	359	}
42aee9b4 VK	360
	361	irq_mem = platform_get_resource_byname(
	362	pdev, IORESOURCE_MEM, "IRQ_BASE");
	363	if (!irq_mem) {
	364	pr_err("no mem resource given\n");
	365	ret_val = -ENODEV;
	366	goto unalloc;
	367	}
	368	mc_drv_ctx->int_base = ioremap_nocache(irq_mem->start,
	369	resource_size(irq_mem));
	370	if (!mc_drv_ctx->int_base) {
	371	pr_err("Mapping of cache failed\n");
	372	ret_val = -ENOMEM;
	373	goto unalloc;
	374	}
	375	/* register for interrupt */
	376	ret_val = request_threaded_irq(irq, snd_mfld_jack_intr_handler,
	377	snd_mfld_jack_detection,
	378	IRQF_SHARED, pdev->dev.driver->name, mc_drv_ctx);
	379	if (ret_val) {
	380	pr_err("cannot register IRQ\n");
	381	goto unalloc;
	382	}
	383	/* create soc device */
	384	mc_drv_ctx->socdev = platform_device_alloc("soc-audio", -1);
	385	if (!mc_drv_ctx->socdev) {
	386	pr_err("soc-audio device allocation failed\n");
	387	ret_val = -ENOMEM;
	388	goto freeirq;
	389	}
	390	platform_set_drvdata(mc_drv_ctx->socdev, &snd_soc_card_mfld);
	391	ret_val = platform_device_add(mc_drv_ctx->socdev);
55c72036 VK	392	if (ret_val) {
55c72036 VK	393	pr_err("Unable to add soc-audio device, err %d\n", ret_val);
42aee9b4	394	goto unregister;
55c72036	395	}
42aee9b4	396	platform_set_drvdata(pdev, mc_drv_ctx);
55c72036 VK	397	pr_debug("successfully exited probe\n");
55c72036 VK	398	return ret_val;
42aee9b4 VK	399
	400	unregister:
	401	platform_device_put(mc_drv_ctx->socdev);
	402	freeirq:
	403	free_irq(irq, mc_drv_ctx);
	404	unalloc:
	405	kfree(mc_drv_ctx);
	406	return ret_val;
55c72036 VK	407	}
	408
	409	static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
	410	{
42aee9b4	411	struct mfld_mc_private *mc_drv_ctx = platform_get_drvdata(pdev);
55c72036	412
42aee9b4 VK	413	pr_debug("snd_mfld_mc_remove called\n");
	414	free_irq(platform_get_irq(pdev, 0), mc_drv_ctx);
	415	platform_device_unregister(mc_drv_ctx->socdev);
	416	kfree(mc_drv_ctx);
55c72036 VK	417	platform_set_drvdata(pdev, NULL);
	418	return 0;
	419	}
	420
	421	static struct platform_driver snd_mfld_mc_driver = {
	422	.driver = {
	423	.owner = THIS_MODULE,
	424	.name = "msic_audio",
	425	},
	426	.probe = snd_mfld_mc_probe,
	427	.remove = __devexit_p(snd_mfld_mc_remove),
	428	};
	429
	430	static int __init snd_mfld_driver_init(void)
	431	{
	432	pr_debug("snd_mfld_driver_init called\n");
	433	return platform_driver_register(&snd_mfld_mc_driver);
	434	}
	435	module_init(snd_mfld_driver_init);
	436
	437	static void __exit snd_mfld_driver_exit(void)
	438	{
	439	pr_debug("snd_mfld_driver_exit called\n");
	440	platform_driver_unregister(&snd_mfld_mc_driver);
	441	}
	442	module_exit(snd_mfld_driver_exit);
	443
	444	MODULE_DESCRIPTION("ASoC Intel(R) MID Machine driver");
	445	MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
	446	MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
	447	MODULE_LICENSE("GPL v2");
	448	MODULE_ALIAS("platform:msic-audio");