sound/soc/msm/msm8960.c

/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * 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.
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/mfd/pm8xxx/pm8921.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/mfd/pm8xxx/pm8921.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/soc-dsp.h>
#include <sound/pcm.h>
#include <sound/jack.h>
#include <asm/mach-types.h>
#include "msm-pcm-routing.h"
#include <../codecs/wcd9310.h>

/* 8960 machine driver */

#define PM8921_GPIO_BASE		NR_GPIO_IRQS
#define PM8921_GPIO_PM_TO_SYS(pm_gpio)  (pm_gpio - 1 + PM8921_GPIO_BASE)

#define TOP_SPK_PAMP_GPIO (PM8921_GPIO_PM_TO_SYS(18))
#define BOTTOM_SPK_PAMP_GPIO (PM8921_GPIO_PM_TO_SYS(19))
#define MSM8960_SPK_ON 1
#define MSM8960_SPK_OFF 0

#define msm8960_SLIM_0_RX_MAX_CHANNELS		2
#define msm8960_SLIM_0_TX_MAX_CHANNELS		4

#define BTSCO_RATE_8KHZ 8000
#define BTSCO_RATE_16KHZ 16000

#define BOTTOM_SPK_AMP_POS	0x1
#define BOTTOM_SPK_AMP_NEG	0x2
#define TOP_SPK_AMP_POS		0x4
#define TOP_SPK_AMP_NEG		0x8

#define GPIO_AUX_PCM_DOUT 63
#define GPIO_AUX_PCM_DIN 64
#define GPIO_AUX_PCM_SYNC 65
#define GPIO_AUX_PCM_CLK 66

static int msm8960_spk_control;
static int msm8960_ext_bottom_spk_pamp;
static int msm8960_ext_top_spk_pamp;
static int msm8960_slim_0_rx_ch = 1;
static int msm8960_slim_0_tx_ch = 1;

static int msm8960_btsco_rate = BTSCO_RATE_8KHZ;
static int msm8960_btsco_ch = 1;

struct tabla_mbhc_calibration tabla_cal = {
	.bias = TABLA_MICBIAS2,
	.tldoh = 100,
	.bg_fast_settle = 100,
	.mic_current = TABLA_PID_MIC_5_UA,
	.mic_pid = 100,
	.hph_current = TABLA_PID_MIC_5_UA,
	.setup_plug_removal_delay = 1000000,
	.shutdown_plug_removal = 100000,
};

static struct clk *codec_clk;
static int clk_users;

static int msm8960_headset_gpios_configured;

static struct snd_soc_jack hs_jack;
static struct snd_soc_jack button_jack;

static void msm8960_enable_ext_spk_amp_gpio(u32 spk_amp_gpio)
{
	int ret = 0;

	struct pm_gpio param = {
		.direction      = PM_GPIO_DIR_OUT,
		.output_buffer  = PM_GPIO_OUT_BUF_CMOS,
		.output_value   = 1,
		.pull      = PM_GPIO_PULL_NO,
		.vin_sel	= PM_GPIO_VIN_S4,
		.out_strength   = PM_GPIO_STRENGTH_MED,
		.
			function       = PM_GPIO_FUNC_NORMAL,
	};

	if (spk_amp_gpio == BOTTOM_SPK_PAMP_GPIO) {

		ret = gpio_request(BOTTOM_SPK_PAMP_GPIO, "BOTTOM_SPK_AMP");
		if (ret) {
			pr_err("%s: Error requesting BOTTOM SPK AMP GPIO %u\n",
				__func__, BOTTOM_SPK_PAMP_GPIO);
			return;
		}
		ret = pm8xxx_gpio_config(BOTTOM_SPK_PAMP_GPIO, &param);
		if (ret)
			pr_err("%s: Failed to configure Bottom Spk Ampl"
				" gpio %u\n", __func__, BOTTOM_SPK_PAMP_GPIO);
		else {
			pr_debug("%s: enable Bottom spkr amp gpio\n", __func__);
			gpio_direction_output(BOTTOM_SPK_PAMP_GPIO, 1);
		}

	} else if (spk_amp_gpio == TOP_SPK_PAMP_GPIO) {

		ret = gpio_request(TOP_SPK_PAMP_GPIO, "TOP_SPK_AMP");
		if (ret) {
			pr_err("%s: Error requesting GPIO %d\n", __func__,
				TOP_SPK_PAMP_GPIO);
			return;
		}
		ret = pm8xxx_gpio_config(TOP_SPK_PAMP_GPIO, &param);
		if (ret)
			pr_err("%s: Failed to configure Top Spk Ampl"
				" gpio %u\n", __func__, TOP_SPK_PAMP_GPIO);
		else {
			pr_debug("%s: enable Top spkr amp gpio\n", __func__);
			gpio_direction_output(TOP_SPK_PAMP_GPIO, 1);
		}
	} else {
		pr_err("%s: ERROR : Invalid External Speaker Ampl GPIO."
			" gpio = %u\n", __func__, spk_amp_gpio);
		return;
	}
}

static void msm8960_ext_spk_power_amp_on(u32 spk)
{
	if (spk & (BOTTOM_SPK_AMP_POS | BOTTOM_SPK_AMP_NEG)) {

		if ((msm8960_ext_bottom_spk_pamp & BOTTOM_SPK_AMP_POS) &&
			(msm8960_ext_bottom_spk_pamp & BOTTOM_SPK_AMP_NEG)) {

			pr_debug("%s() External Bottom Speaker Ampl already "
				"turned on. spk = 0x%08x\n", __func__, spk);
			return;
		}

		msm8960_ext_bottom_spk_pamp |= spk;

		if ((msm8960_ext_bottom_spk_pamp & BOTTOM_SPK_AMP_POS) &&
			(msm8960_ext_bottom_spk_pamp & BOTTOM_SPK_AMP_NEG)) {

			msm8960_enable_ext_spk_amp_gpio(BOTTOM_SPK_PAMP_GPIO);
			pr_debug("%s: slepping 4 ms after turning on external "
				" Bottom Speaker Ampl\n", __func__);
			usleep_range(4000, 4000);
		}

	} else if (spk & (TOP_SPK_AMP_POS | TOP_SPK_AMP_NEG)) {

		if ((msm8960_ext_top_spk_pamp & TOP_SPK_AMP_POS) &&
			(msm8960_ext_top_spk_pamp & TOP_SPK_AMP_NEG)) {

			pr_debug("%s() External Top Speaker Ampl already"
				"turned on. spk = 0x%08x\n", __func__, spk);
			return;
		}

		msm8960_ext_top_spk_pamp |= spk;

		if ((msm8960_ext_top_spk_pamp & TOP_SPK_AMP_POS) &&
			(msm8960_ext_top_spk_pamp & TOP_SPK_AMP_NEG)) {

			msm8960_enable_ext_spk_amp_gpio(TOP_SPK_PAMP_GPIO);
			pr_debug("%s: sleeping 4 ms after turning on "
				" external Top Speaker Ampl\n", __func__);
			usleep_range(4000, 4000);
		}
	} else  {

		pr_err("%s: ERROR : Invalid External Speaker Ampl. spk = 0x%08x\n",
			__func__, spk);
		return;
	}
}

static void msm8960_ext_spk_power_amp_off(u32 spk)
{
	if (spk & (BOTTOM_SPK_AMP_POS | BOTTOM_SPK_AMP_NEG)) {

		if (!msm8960_ext_bottom_spk_pamp)
			return;

		gpio_direction_output(BOTTOM_SPK_PAMP_GPIO, 0);
		gpio_free(BOTTOM_SPK_PAMP_GPIO);
		msm8960_ext_bottom_spk_pamp = 0;

		pr_debug("%s: sleeping 4 ms after turning off external Bottom"
			" Speaker Ampl\n", __func__);

		usleep_range(4000, 4000);

	} else if (spk & (TOP_SPK_AMP_POS | TOP_SPK_AMP_NEG)) {

		if (!msm8960_ext_top_spk_pamp)
			return;

		gpio_direction_output(TOP_SPK_PAMP_GPIO, 0);
		gpio_free(TOP_SPK_PAMP_GPIO);
		msm8960_ext_top_spk_pamp = 0;

		pr_debug("%s: sleeping 4 ms after turning off external Top"
			" Spkaker Ampl\n", __func__);

		usleep_range(4000, 4000);
	} else  {

		pr_err("%s: ERROR : Invalid Ext Spk Ampl. spk = 0x%08x\n",
			__func__, spk);
		return;
	}
}

static void msm8960_ext_control(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	pr_debug("%s: msm8960_spk_control = %d", __func__, msm8960_spk_control);
	if (msm8960_spk_control == MSM8960_SPK_ON)
		snd_soc_dapm_enable_pin(dapm, "Ext Spk");
	else
		snd_soc_dapm_disable_pin(dapm, "Ext Spk");

	snd_soc_dapm_sync(dapm);
}

static int msm8960_get_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s: msm8960_spk_control = %d", __func__, msm8960_spk_control);
	ucontrol->value.integer.value[0] = msm8960_spk_control;
	return 0;
}
static int msm8960_set_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

	pr_debug("%s()\n", __func__);
	if (msm8960_spk_control == ucontrol->value.integer.value[0])
		return 0;

	msm8960_spk_control = ucontrol->value.integer.value[0];
	msm8960_ext_control(codec);
	return 1;
}
static int msm8960_spkramp_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
{
	pr_debug("%s() %x\n", __func__, SND_SOC_DAPM_EVENT_ON(event));

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		if (!strncmp(w->name, "Ext Spk Bottom Pos", 18))
			msm8960_ext_spk_power_amp_on(BOTTOM_SPK_AMP_POS);
		else if (!strncmp(w->name, "Ext Spk Bottom Neg", 18))
			msm8960_ext_spk_power_amp_on(BOTTOM_SPK_AMP_NEG);
		else if (!strncmp(w->name, "Ext Spk Top Pos", 15))
			msm8960_ext_spk_power_amp_on(TOP_SPK_AMP_POS);
		else if  (!strncmp(w->name, "Ext Spk Top Neg", 15))
			msm8960_ext_spk_power_amp_on(TOP_SPK_AMP_NEG);
		else {
			pr_err("%s() Invalid Speaker Widget = %s\n",
					__func__, w->name);
			return -EINVAL;
		}

	} else {
		if (!strncmp(w->name, "Ext Spk Bottom Pos", 18))
			msm8960_ext_spk_power_amp_off(BOTTOM_SPK_AMP_POS);
		else if (!strncmp(w->name, "Ext Spk Bottom Neg", 18))
			msm8960_ext_spk_power_amp_off(BOTTOM_SPK_AMP_NEG);
		else if (!strncmp(w->name, "Ext Spk Top Pos", 15))
			msm8960_ext_spk_power_amp_off(TOP_SPK_AMP_POS);
		else if  (!strncmp(w->name, "Ext Spk Top Neg", 15))
			msm8960_ext_spk_power_amp_off(TOP_SPK_AMP_NEG);
		else {
			pr_err("%s() Invalid Speaker Widget = %s\n",
					__func__, w->name);
			return -EINVAL;
		}
	}
	return 0;
}

static int msm8960_mclk_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
	pr_debug("%s: event = %d\n", __func__, event);

	switch (event) {
	case SND_SOC_DAPM_PRE_PMU:

		clk_users++;
		pr_debug("%s: clk_users = %d\n", __func__, clk_users);

		if (clk_users != 1)
			return 0;

		codec_clk = clk_get(NULL, "i2s_spkr_osr_clk");
		if (codec_clk) {
			clk_set_rate(codec_clk, 12288000);
			clk_enable(codec_clk);
			tabla_mclk_enable(w->codec, 1);

		} else {
			pr_err("%s: Error setting Tabla MCLK\n", __func__);
			clk_users--;
			return -EINVAL;
		}
		break;
	case SND_SOC_DAPM_POST_PMD:

		pr_debug("%s: clk_users = %d\n", __func__, clk_users);

		if (clk_users == 0)
			return 0;

		clk_users--;

		if (!clk_users) {
			pr_debug("%s: disabling MCLK. clk_users = %d\n",
					__func__, clk_users);

			clk_disable(codec_clk);
			clk_put(codec_clk);
			tabla_mclk_enable(w->codec, 0);
		}
		break;
	}
	return 0;
}

static const struct snd_soc_dapm_widget msm8960_dapm_widgets[] = {

	SND_SOC_DAPM_SUPPLY("MCLK",  SND_SOC_NOPM, 0, 0,
	msm8960_mclk_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_SPK("Ext Spk Bottom Pos", msm8960_spkramp_event),
	SND_SOC_DAPM_SPK("Ext Spk Bottom Neg", msm8960_spkramp_event),

	SND_SOC_DAPM_SPK("Ext Spk Top Pos", msm8960_spkramp_event),
	SND_SOC_DAPM_SPK("Ext Spk Top Neg", msm8960_spkramp_event),

	SND_SOC_DAPM_MIC("Handset Mic", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
	SND_SOC_DAPM_MIC("ANCRight Headset Mic", NULL),
	SND_SOC_DAPM_MIC("ANCLeft Headset Mic", NULL),

	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
	SND_SOC_DAPM_MIC("Digital Mic2", NULL),
	SND_SOC_DAPM_MIC("Digital Mic3", NULL),
	SND_SOC_DAPM_MIC("Digital Mic4", NULL),
	SND_SOC_DAPM_MIC("Digital Mic5", NULL),
	SND_SOC_DAPM_MIC("Digital Mic6", NULL),

};

static const struct snd_soc_dapm_route common_audio_map[] = {

	{"RX_BIAS", NULL, "MCLK"},
	{"LDO_H", NULL, "MCLK"},

	/* Speaker path */
	{"Ext Spk Bottom Pos", NULL, "LINEOUT1"},
	{"Ext Spk Bottom Neg", NULL, "LINEOUT3"},

	{"Ext Spk Top Pos", NULL, "LINEOUT2"},
	{"Ext Spk Top Neg", NULL, "LINEOUT4"},

	/* Microphone path */
	{"AMIC1", NULL, "MIC BIAS1 Internal1"},
	{"MIC BIAS1 Internal1", NULL, "Handset Mic"},

	{"AMIC2", NULL, "MIC BIAS2 External"},
	{"MIC BIAS2 External", NULL, "Headset Mic"},

	/**
	 * AMIC3 and AMIC4 inputs are connected to ANC microphones
	 * These mics are biased differently on CDP and FLUID
	 * routing entries below are based on bias arrangement
	 * on FLUID.
	 */
	{"AMIC3", NULL, "MIC BIAS3 Internal1"},
	{"MIC BIAS3 Internal1", NULL, "ANCRight Headset Mic"},

	{"AMIC4", NULL, "MIC BIAS1 Internal2"},
	{"MIC BIAS1 Internal2", NULL, "ANCLeft Headset Mic"},

	{"HEADPHONE", NULL, "LDO_H"},

	/**
	 * The digital Mic routes are setup considering
	 * fluid as default device.
	 */

	/**
	 * Digital Mic1. Front Bottom left Digital Mic on Fluid and MTP.
	 * Digital Mic GM5 on CDP mainboard.
	 * Conncted to DMIC2 Input on Tabla codec.
	 */
	{"DMIC2", NULL, "MIC BIAS1 External"},
	{"MIC BIAS1 External", NULL, "Digital Mic1"},

	/**
	 * Digital Mic2. Front Bottom right Digital Mic on Fluid and MTP.
	 * Digital Mic GM6 on CDP mainboard.
	 * Conncted to DMIC1 Input on Tabla codec.
	 */
	{"DMIC1", NULL, "MIC BIAS1 External"},
	{"MIC BIAS1 External", NULL, "Digital Mic2"},

	/**
	 * Digital Mic3. Back Bottom Digital Mic on Fluid.
	 * Digital Mic GM1 on CDP mainboard.
	 * Conncted to DMIC4 Input on Tabla codec.
	 */
	{"DMIC4", NULL, "MIC BIAS3 External"},
	{"MIC BIAS3 External", NULL, "Digital Mic3"},

	/**
	 * Digital Mic4. Back top Digital Mic on Fluid.
	 * Digital Mic GM2 on CDP mainboard.
	 * Conncted to DMIC3 Input on Tabla codec.
	 */
	{"DMIC3", NULL, "MIC BIAS3 External"},
	{"MIC BIAS3 External", NULL, "Digital Mic4"},

	/**
	 * Digital Mic5. Front top Digital Mic on Fluid.
	 * Digital Mic GM3 on CDP mainboard.
	 * Conncted to DMIC5 Input on Tabla codec.
	 */
	{"DMIC5", NULL, "MIC BIAS4 External"},
	{"MIC BIAS4 External", NULL, "Digital Mic5"},

	/* Tabla digital Mic6 - back bottom digital Mic on Liquid and
	 * bottom mic on CDP. FLUID/MTP do not have dmic6 installed.
	 */
	{"DMIC6", NULL, "MIC BIAS4 External"},
	{"MIC BIAS4 External", NULL, "Digital Mic6"},
};

static const char *spk_function[] = {"Off", "On"};
static const char *slim0_rx_ch_text[] = {"One", "Two"};
static const char *slim0_tx_ch_text[] = {"One", "Two", "Three", "Four"};

static const struct soc_enum msm8960_enum[] = {
	SOC_ENUM_SINGLE_EXT(2, spk_function),
	SOC_ENUM_SINGLE_EXT(2, slim0_rx_ch_text),
	SOC_ENUM_SINGLE_EXT(4, slim0_tx_ch_text),
};

static const char *btsco_rate_text[] = {"8000", "16000"};
static const struct soc_enum msm8960_btsco_enum[] = {
		SOC_ENUM_SINGLE_EXT(2, btsco_rate_text),
};

static int msm8960_slim_0_rx_ch_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s: msm8960_slim_0_rx_ch  = %d\n", __func__,
			msm8960_slim_0_rx_ch);
	ucontrol->value.integer.value[0] = msm8960_slim_0_rx_ch - 1;
	return 0;
}

static int msm8960_slim_0_rx_ch_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	msm8960_slim_0_rx_ch = ucontrol->value.integer.value[0] + 1;

	pr_debug("%s: msm8960_slim_0_rx_ch = %d\n", __func__,
			msm8960_slim_0_rx_ch);
	return 1;
}

static int msm8960_slim_0_tx_ch_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s: msm8960_slim_0_tx_ch  = %d\n", __func__,
			msm8960_slim_0_tx_ch);
	ucontrol->value.integer.value[0] = msm8960_slim_0_tx_ch - 1;
	return 0;
}

static int msm8960_slim_0_tx_ch_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	msm8960_slim_0_tx_ch = ucontrol->value.integer.value[0] + 1;

	pr_debug("%s: msm8960_slim_0_tx_ch = %d\n", __func__,
			msm8960_slim_0_tx_ch);
	return 1;
}

static int msm8960_btsco_rate_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	pr_debug("%s: msm8960_btsco_rate  = %d", __func__,
					msm8960_btsco_rate);
	ucontrol->value.integer.value[0] = msm8960_btsco_rate;
	return 0;
}

static int msm8960_btsco_rate_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	switch (ucontrol->value.integer.value[0]) {
	case 0:
		msm8960_btsco_rate = BTSCO_RATE_8KHZ;
		break;
	case 1:
		msm8960_btsco_rate = BTSCO_RATE_16KHZ;
		break;
	default:
		msm8960_btsco_rate = BTSCO_RATE_8KHZ;
		break;
	}
	pr_debug("%s: msm8960_btsco_rate = %d\n", __func__,
					msm8960_btsco_rate);
	return 0;
}

static const struct snd_kcontrol_new tabla_msm8960_controls[] = {
	SOC_ENUM_EXT("Speaker Function", msm8960_enum[0], msm8960_get_spk,
		msm8960_set_spk),
	SOC_ENUM_EXT("SLIM_0_RX Channels", msm8960_enum[1],
		msm8960_slim_0_rx_ch_get, msm8960_slim_0_rx_ch_put),
	SOC_ENUM_EXT("SLIM_0_TX Channels", msm8960_enum[2],
		msm8960_slim_0_tx_ch_get, msm8960_slim_0_tx_ch_put),
};

static const struct snd_kcontrol_new int_btsco_rate_mixer_controls[] = {
	SOC_ENUM_EXT("Internal BTSCO SampleRate", msm8960_btsco_enum[0],
		msm8960_btsco_rate_get, msm8960_btsco_rate_put),
};

static int msm8960_btsco_init(struct snd_soc_pcm_runtime *rtd)
{
	int err = 0;
	struct snd_soc_platform *platform = rtd->platform;

	err = snd_soc_add_platform_controls(platform,
			int_btsco_rate_mixer_controls,
		ARRAY_SIZE(int_btsco_rate_mixer_controls));
	if (err < 0)
		return err;
	return 0;
}

static int msm8960_audrx_init(struct snd_soc_pcm_runtime *rtd)
{
	int err;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	pr_debug("%s()\n", __func__);

	err = snd_soc_add_controls(codec, tabla_msm8960_controls,
				ARRAY_SIZE(tabla_msm8960_controls));
	if (err < 0)
		return err;

	snd_soc_dapm_new_controls(dapm, msm8960_dapm_widgets,
				ARRAY_SIZE(msm8960_dapm_widgets));

	snd_soc_dapm_add_routes(dapm, common_audio_map,
		ARRAY_SIZE(common_audio_map));

	snd_soc_dapm_enable_pin(dapm, "Ext Spk");

	snd_soc_dapm_sync(dapm);

	err = snd_soc_jack_new(codec, "Headset Jack",
				SND_JACK_HEADSET, &hs_jack);
	if (err) {
		pr_err("failed to create new jack\n");
		return err;
	}

	err = snd_soc_jack_new(codec, "Button Jack",
				SND_JACK_BTN_0, &button_jack);
	if (err) {
		pr_err("failed to create new jack\n");
		return err;
	}

	tabla_hs_detect(codec, &hs_jack, &button_jack, &tabla_cal);

	return 0;
}

static struct snd_soc_dsp_link lpa_fe_media = {
	.playback = true,
	.trigger = {
		SND_SOC_DSP_TRIGGER_POST,
		SND_SOC_DSP_TRIGGER_POST
	},
};

static struct snd_soc_dsp_link fe_media = {
	.playback = true,
	.capture = true,
	.trigger = {
		SND_SOC_DSP_TRIGGER_POST,
		SND_SOC_DSP_TRIGGER_POST
	},
};

static struct snd_soc_dsp_link slimbus0_hl_media = {
	.playback = true,
	.capture = true,
	.trigger = {
		SND_SOC_DSP_TRIGGER_POST,
		SND_SOC_DSP_TRIGGER_POST
	},
};

static struct snd_soc_dsp_link int_fm_hl_media = {
	.playback = true,
	.capture = true,
	.trigger = {
		SND_SOC_DSP_TRIGGER_POST,
		SND_SOC_DSP_TRIGGER_POST
	},
};

static int msm8960_slim_0_rx_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
			struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_RATE);

	struct snd_interval *channels = hw_param_interval(params,
			SNDRV_PCM_HW_PARAM_CHANNELS);

	pr_debug("%s()\n", __func__);
	rate->min = rate->max = 48000;
	channels->min = channels->max = msm8960_slim_0_rx_ch;

	return 0;
}

static int msm8960_slim_0_tx_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
			struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_RATE);

	struct snd_interval *channels = hw_param_interval(params,
			SNDRV_PCM_HW_PARAM_CHANNELS);

	pr_debug("%s()\n", __func__);
	rate->min = rate->max = 48000;
	channels->min = channels->max = msm8960_slim_0_tx_ch;

	return 0;
}

static int msm8960_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
			struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
	SNDRV_PCM_HW_PARAM_RATE);

	pr_debug("%s()\n", __func__);
	rate->min = rate->max = 48000;

	return 0;
}

static int msm8960_btsco_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
					struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
					SNDRV_PCM_HW_PARAM_RATE);

	struct snd_interval *channels = hw_param_interval(params,
					SNDRV_PCM_HW_PARAM_CHANNELS);

	rate->min = rate->max = msm8960_btsco_rate;
	channels->min = channels->max = msm8960_btsco_ch;

	return 0;
}
static int msm8960_auxpcm_be_params_fixup(struct snd_soc_pcm_runtime *rtd,
					struct snd_pcm_hw_params *params)
{
	struct snd_interval *rate = hw_param_interval(params,
					SNDRV_PCM_HW_PARAM_RATE);

	struct snd_interval *channels = hw_param_interval(params,
					SNDRV_PCM_HW_PARAM_CHANNELS);

	/* PCM only supports mono output with 8khz sample rate */
	rate->min = rate->max = 8000;
	channels->min = channels->max = 1;

	return 0;
}
static int msm8960_aux_pcm_get_gpios(void)
{
	int ret = 0;

	pr_debug("%s\n", __func__);

	ret = gpio_request(GPIO_AUX_PCM_DOUT, "AUX PCM DOUT");
	if (ret < 0) {
		pr_err("%s: Failed to request gpio(%d): AUX PCM DOUT",
				__func__, GPIO_AUX_PCM_DOUT);
		goto fail_dout;
	}

	ret = gpio_request(GPIO_AUX_PCM_DIN, "AUX PCM DIN");
	if (ret < 0) {
		pr_err("%s: Failed to request gpio(%d): AUX PCM DIN",
				__func__, GPIO_AUX_PCM_DIN);
		goto fail_din;
	}

	ret = gpio_request(GPIO_AUX_PCM_SYNC, "AUX PCM SYNC");
	if (ret < 0) {
		pr_err("%s: Failed to request gpio(%d): AUX PCM SYNC",
				__func__, GPIO_AUX_PCM_SYNC);
		goto fail_sync;
	}
	ret = gpio_request(GPIO_AUX_PCM_CLK, "AUX PCM CLK");
	if (ret < 0) {
		pr_err("%s: Failed to request gpio(%d): AUX PCM CLK",
				__func__, GPIO_AUX_PCM_CLK);
		goto fail_clk;
	}

	return 0;

fail_clk:
	gpio_free(GPIO_AUX_PCM_SYNC);
fail_sync:
	gpio_free(GPIO_AUX_PCM_DIN);
fail_din:
	gpio_free(GPIO_AUX_PCM_DOUT);
fail_dout:

	return ret;
}

static int msm8960_aux_pcm_free_gpios(void)
{
	gpio_free(GPIO_AUX_PCM_DIN);
	gpio_free(GPIO_AUX_PCM_DOUT);
	gpio_free(GPIO_AUX_PCM_SYNC);
	gpio_free(GPIO_AUX_PCM_CLK);

	return 0;
}
static int msm8960_startup(struct snd_pcm_substream *substream)
{
	pr_debug("%s(): substream = %s  stream = %d\n", __func__,
		 substream->name, substream->stream);
	return 0;
}

static int msm8960_auxpcm_startup(struct snd_pcm_substream *substream)
{
	int ret = 0;

	pr_debug("%s(): substream = %s\n", __func__, substream->name);
	ret = msm8960_aux_pcm_get_gpios();
	if (ret < 0) {
		pr_err("%s: Aux PCM GPIO request failed\n", __func__);
		return -EINVAL;
	}
	return 0;
}

static void msm8960_auxpcm_shutdown(struct snd_pcm_substream *substream)
{

	pr_debug("%s(): substream = %s\n", __func__, substream->name);
	msm8960_aux_pcm_free_gpios();
}

static void msm8960_shutdown(struct snd_pcm_substream *substream)
{
	pr_debug("%s(): substream = %s  stream = %d\n", __func__,
		 substream->name, substream->stream);
}

static struct snd_soc_ops msm8960_be_ops = {
	.startup = msm8960_startup,
	.shutdown = msm8960_shutdown,
};

static struct snd_soc_ops msm8960_auxpcm_be_ops = {
	.startup = msm8960_auxpcm_startup,
	.shutdown = msm8960_auxpcm_shutdown,
};

/* Digital audio interface glue - connects codec <---> CPU */
static struct snd_soc_dai_link msm8960_dai[] = {
	/* FrontEnd DAI Links */
	{
		.name = "MSM8960 Media1",
		.stream_name = "MultiMedia1",
		.cpu_dai_name	= "MultiMedia1",
		.platform_name  = "msm-pcm-dsp",
		.dynamic = 1,
		.dsp_link = &fe_media,
		.be_id = MSM_FRONTEND_DAI_MULTIMEDIA1
	},
	{
		.name = "MSM8960 Media2",
		.stream_name = "MultiMedia2",
		.cpu_dai_name	= "MultiMedia2",
		.platform_name  = "msm-pcm-dsp",
		.dynamic = 1,
		.dsp_link = &fe_media,
		.be_id = MSM_FRONTEND_DAI_MULTIMEDIA2,
	},
	{
		.name = "Circuit-Switch Voice",
		.stream_name = "CS-Voice",
		.cpu_dai_name   = "CS-VOICE",
		.platform_name  = "msm-pcm-voice",
		.dynamic = 1,
		.dsp_link = &fe_media,
		.be_id = MSM_FRONTEND_DAI_CS_VOICE,
		.no_host_mode = SND_SOC_DAI_LINK_NO_HOST,
		.ignore_suspend = 1,
	},
	{
		.name = "MSM VoIP",
		.stream_name = "VoIP",
		.cpu_dai_name	= "VoIP",
		.platform_name  = "msm-voip-dsp",
		.dynamic = 1,
		.dsp_link = &fe_media,
		.be_id = MSM_FRONTEND_DAI_VOIP,
	},
	{
		.name = "MSM8960 LPA",
		.stream_name = "LPA",
		.cpu_dai_name	= "MultiMedia3",
		.platform_name  = "msm-pcm-lpa",
		.dynamic = 1,
		.dsp_link = &lpa_fe_media,
		.be_id = MSM_FRONTEND_DAI_MULTIMEDIA3,
	},
	/* Hostless PMC purpose */
	{
		.name = "SLIMBUS_0 Hostless",
		.stream_name = "SLIMBUS_0 Hostless",
		.cpu_dai_name	= "SLIMBUS0_HOSTLESS",
		.platform_name  = "msm-pcm-hostless",
		.dynamic = 1,
		.dsp_link = &slimbus0_hl_media,
		.no_host_mode = SND_SOC_DAI_LINK_NO_HOST,
		.ignore_suspend = 1,
		/* .be_id = do not care */
	},
	{
		.name = "INT_FM Hostless",
		.stream_name = "INT_FM Hostless",
		.cpu_dai_name	= "INT_FM_HOSTLESS",
		.platform_name  = "msm-pcm-hostless",
		.dynamic = 1,
		.dsp_link = &int_fm_hl_media,
		.no_host_mode = SND_SOC_DAI_LINK_NO_HOST,
		.ignore_suspend = 1,
		/* .be_id = do not care */
	},
	{
		.name = "MSM AFE-PCM RX",
		.stream_name = "AFE-PROXY RX",
		.cpu_dai_name = "msm-dai-q6.241",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-rx",
		.platform_name  = "msm-pcm-afe",
		.ignore_suspend = 1,
	},
	{
		.name = "MSM AFE-PCM TX",
		.stream_name = "AFE-PROXY TX",
		.cpu_dai_name = "msm-dai-q6.240",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-tx",
		.platform_name  = "msm-pcm-afe",
		.ignore_suspend = 1,
	},
	/* Backend DAI Links */
	{
		.name = LPASS_BE_SLIMBUS_0_RX,
		.stream_name = "Slimbus Playback",
		.cpu_dai_name = "msm-dai-q6.16384",
		.platform_name = "msm-pcm-routing",
		.codec_name     = "tabla_codec",
		.codec_dai_name	= "tabla_rx1",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_SLIMBUS_0_RX,
		.init = &msm8960_audrx_init,
		.be_hw_params_fixup = msm8960_slim_0_rx_be_hw_params_fixup,
		.ops = &msm8960_be_ops,
	},
	{
		.name = LPASS_BE_SLIMBUS_0_TX,
		.stream_name = "Slimbus Capture",
		.cpu_dai_name = "msm-dai-q6.16385",
		.platform_name = "msm-pcm-routing",
		.codec_name     = "tabla_codec",
		.codec_dai_name	= "tabla_tx1",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_SLIMBUS_0_TX,
		.be_hw_params_fixup = msm8960_slim_0_tx_be_hw_params_fixup,
		.ops = &msm8960_be_ops,
	},
	/* Backend BT/FM DAI Links */
	{
		.name = LPASS_BE_INT_BT_SCO_RX,
		.stream_name = "Internal BT-SCO Playback",
		.cpu_dai_name = "msm-dai-q6.12288",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name	= "msm-stub-rx",
		.init = &msm8960_btsco_init,
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_INT_BT_SCO_RX,
		.be_hw_params_fixup = msm8960_btsco_be_hw_params_fixup,
	},
	{
		.name = LPASS_BE_INT_BT_SCO_TX,
		.stream_name = "Internal BT-SCO Capture",
		.cpu_dai_name = "msm-dai-q6.12289",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name	= "msm-stub-tx",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_INT_BT_SCO_TX,
		.be_hw_params_fixup = msm8960_btsco_be_hw_params_fixup,
	},
	{
		.name = LPASS_BE_INT_FM_RX,
		.stream_name = "Internal FM Playback",
		.cpu_dai_name = "msm-dai-q6.12292",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-rx",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_INT_FM_RX,
		.be_hw_params_fixup = msm8960_be_hw_params_fixup,
	},
	{
		.name = LPASS_BE_INT_FM_TX,
		.stream_name = "Internal FM Capture",
		.cpu_dai_name = "msm-dai-q6.12293",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-tx",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_INT_FM_TX,
		.be_hw_params_fixup = msm8960_be_hw_params_fixup,
	},
	/* HDMI BACK END DAI Link */
	{
		.name = LPASS_BE_HDMI,
		.stream_name = "HDMI Playback",
		.cpu_dai_name = "msm-dai-q6.8",
		.platform_name = "msm-pcm-routing",
		.codec_name     = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-rx",
		.no_pcm = 1,
		.no_codec = 1,
		.be_id = MSM_BACKEND_DAI_HDMI_RX,
		.be_hw_params_fixup = msm8960_be_hw_params_fixup,
	},
	/* Backend AFE DAI Links */
	{
		.name = LPASS_BE_AFE_PCM_RX,
		.stream_name = "AFE Playback",
		.cpu_dai_name = "msm-dai-q6.224",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-rx",
		.no_codec = 1,
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_AFE_PCM_RX,
	},
	{
		.name = LPASS_BE_AFE_PCM_TX,
		.stream_name = "AFE Capture",
		.cpu_dai_name = "msm-dai-q6.225",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-tx",
		.no_codec = 1,
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_AFE_PCM_TX,
	},
	/* AUX PCM Backend DAI Links */
	{
		.name = LPASS_BE_AUXPCM_RX,
		.stream_name = "AUX PCM Playback",
		.cpu_dai_name = "msm-dai-q6.2",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-rx",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_AUXPCM_RX,
		.be_hw_params_fixup = msm8960_auxpcm_be_params_fixup,
		.ops = &msm8960_auxpcm_be_ops,
	},
	{
		.name = LPASS_BE_AUXPCM_TX,
		.stream_name = "AUX PCM Capture",
		.cpu_dai_name = "msm-dai-q6.3",
		.platform_name = "msm-pcm-routing",
		.codec_name = "msm-stub-codec.1",
		.codec_dai_name = "msm-stub-tx",
		.no_pcm = 1,
		.be_id = MSM_BACKEND_DAI_AUXPCM_TX,
		.be_hw_params_fixup = msm8960_auxpcm_be_params_fixup,
	},
};

struct snd_soc_card snd_soc_card_msm8960 = {
	.name		= "msm8960-snd-card",
	.dai_link	= msm8960_dai,
	.num_links	= ARRAY_SIZE(msm8960_dai),
};

static struct platform_device *msm8960_snd_device;

static int msm8960_configure_headset_mic_gpios(void)
{
	int ret;
	struct pm_gpio param = {
		.direction      = PM_GPIO_DIR_OUT,
		.output_buffer  = PM_GPIO_OUT_BUF_CMOS,
		.output_value   = 1,
		.pull	   = PM_GPIO_PULL_NO,
		.vin_sel	= PM_GPIO_VIN_S4,
		.out_strength   = PM_GPIO_STRENGTH_MED,
		.function       = PM_GPIO_FUNC_NORMAL,
	};

	ret = gpio_request(PM8921_GPIO_PM_TO_SYS(23), "AV_SWITCH");
	if (ret) {
		pr_err("%s: Failed to request gpio %d\n", __func__,
			PM8921_GPIO_PM_TO_SYS(23));
		return ret;
	}

	ret = pm8xxx_gpio_config(PM8921_GPIO_PM_TO_SYS(23), &param);
	if (ret)
		pr_err("%s: Failed to configure gpio %d\n", __func__,
			PM8921_GPIO_PM_TO_SYS(23));
	else
		gpio_direction_output(PM8921_GPIO_PM_TO_SYS(23), 0);

	ret = gpio_request(PM8921_GPIO_PM_TO_SYS(35), "US_EURO_SWITCH");
	if (ret) {
		pr_err("%s: Failed to request gpio %d\n", __func__,
			PM8921_GPIO_PM_TO_SYS(35));
		gpio_free(PM8921_GPIO_PM_TO_SYS(23));
		return ret;
	}
	ret = pm8xxx_gpio_config(PM8921_GPIO_PM_TO_SYS(35), &param);
	if (ret)
		pr_err("%s: Failed to configure gpio %d\n", __func__,
			PM8921_GPIO_PM_TO_SYS(35));
	else
		gpio_direction_output(PM8921_GPIO_PM_TO_SYS(35), 0);

	return 0;
}
static void msm8960_free_headset_mic_gpios(void)
{
	if (msm8960_headset_gpios_configured) {
		gpio_free(PM8921_GPIO_PM_TO_SYS(23));
		gpio_free(PM8921_GPIO_PM_TO_SYS(35));
	}
}

static int __init msm8960_audio_init(void)
{
	int ret;

	msm8960_snd_device = platform_device_alloc("soc-audio", 0);
	if (!msm8960_snd_device) {
		pr_err("Platform device allocation failed\n");
		return -ENOMEM;
	}

	platform_set_drvdata(msm8960_snd_device, &snd_soc_card_msm8960);
	ret = platform_device_add(msm8960_snd_device);
	if (ret) {
		platform_device_put(msm8960_snd_device);
		return ret;
	}

	if (msm8960_configure_headset_mic_gpios()) {
		pr_err("%s Fail to configure headset mic gpios\n", __func__);
		msm8960_headset_gpios_configured = 0;
	} else
		msm8960_headset_gpios_configured = 1;

	return ret;

}
module_init(msm8960_audio_init);

static void __exit msm8960_audio_exit(void)
{
	msm8960_free_headset_mic_gpios();
	platform_device_unregister(msm8960_snd_device);
}
module_exit(msm8960_audio_exit);

MODULE_DESCRIPTION("ALSA SoC MSM8960");
MODULE_LICENSE("GPL v2");