/* Copyright (c) 2011-2012, 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/interrupt.h>
#include <linux/mfd/pm8xxx/pm8038.h>
#include <linux/mfd/pm8xxx/pm8xxx-adc.h>
#include <linux/msm_ssbi.h>
#include <asm/mach-types.h>
#include <mach/msm_bus_board.h>
#include <mach/restart.h>
#include "devices.h"
#include "board-8930.h"

struct pm8xxx_gpio_init {
	unsigned			gpio;
	struct pm_gpio			config;
};

struct pm8xxx_mpp_init {
	unsigned			mpp;
	struct pm8xxx_mpp_config_data	config;
};

#define PM8XXX_GPIO_INIT(_gpio, _dir, _buf, _val, _pull, _vin, _out_strength, \
			_func, _inv, _disable) \
{ \
	.gpio	= PM8038_GPIO_PM_TO_SYS(_gpio), \
	.config	= { \
		.direction	= _dir, \
		.output_buffer	= _buf, \
		.output_value	= _val, \
		.pull		= _pull, \
		.vin_sel	= _vin, \
		.out_strength	= _out_strength, \
		.function	= _func, \
		.inv_int_pol	= _inv, \
		.disable_pin	= _disable, \
	} \
}

#define PM8XXX_MPP_INIT(_mpp, _type, _level, _control) \
{ \
	.mpp	= PM8038_MPP_PM_TO_SYS(_mpp), \
	.config	= { \
		.type		= PM8XXX_MPP_TYPE_##_type, \
		.level		= _level, \
		.control	= PM8XXX_MPP_##_control, \
	} \
}

#define PM8XXX_GPIO_DISABLE(_gpio) \
	PM8XXX_GPIO_INIT(_gpio, PM_GPIO_DIR_IN, 0, 0, 0, PM8038_GPIO_VIN_L11, \
			 0, 0, 0, 1)

#define PM8XXX_GPIO_OUTPUT(_gpio, _val) \
	PM8XXX_GPIO_INIT(_gpio, PM_GPIO_DIR_OUT, PM_GPIO_OUT_BUF_CMOS, _val, \
			PM_GPIO_PULL_NO, PM8038_GPIO_VIN_L11, \
			PM_GPIO_STRENGTH_HIGH, \
			PM_GPIO_FUNC_NORMAL, 0, 0)

#define PM8XXX_GPIO_INPUT(_gpio, _pull) \
	PM8XXX_GPIO_INIT(_gpio, PM_GPIO_DIR_IN, PM_GPIO_OUT_BUF_CMOS, 0, \
			_pull, PM8038_GPIO_VIN_L11, \
			PM_GPIO_STRENGTH_NO, \
			PM_GPIO_FUNC_NORMAL, 0, 0)

#define PM8XXX_GPIO_OUTPUT_FUNC(_gpio, _val, _func) \
	PM8XXX_GPIO_INIT(_gpio, PM_GPIO_DIR_OUT, PM_GPIO_OUT_BUF_CMOS, _val, \
			PM_GPIO_PULL_NO, PM8038_GPIO_VIN_L11, \
			PM_GPIO_STRENGTH_HIGH, \
			_func, 0, 0)

#define PM8XXX_GPIO_OUTPUT_VIN(_gpio, _val, _vin) \
	PM8XXX_GPIO_INIT(_gpio, PM_GPIO_DIR_OUT, PM_GPIO_OUT_BUF_CMOS, _val, \
			PM_GPIO_PULL_NO, _vin, \
			PM_GPIO_STRENGTH_HIGH, \
			PM_GPIO_FUNC_NORMAL, 0, 0)

/* Initial pm8038 GPIO configurations */
static struct pm8xxx_gpio_init pm8038_gpios[] __initdata = {
	/* keys GPIOs */
	PM8XXX_GPIO_INPUT(3, PM_GPIO_PULL_UP_1P5),
	PM8XXX_GPIO_INPUT(8, PM_GPIO_PULL_UP_1P5),
	PM8XXX_GPIO_INPUT(10, PM_GPIO_PULL_UP_1P5),
	PM8XXX_GPIO_INPUT(11, PM_GPIO_PULL_UP_1P5),
};

/* Initial pm8038 MPP configurations */
static struct pm8xxx_mpp_init pm8038_mpps[] __initdata = {
	/* External 5V regulator enable; shared by HDMI and USB_OTG switches. */
	PM8XXX_MPP_INIT(3, D_INPUT, PM8038_MPP_DIG_LEVEL_VPH, DIN_TO_INT),
};

void __init msm8930_pm8038_gpio_mpp_init(void)
{
	int i, rc;

	for (i = 0; i < ARRAY_SIZE(pm8038_gpios); i++) {
		rc = pm8xxx_gpio_config(pm8038_gpios[i].gpio,
					&pm8038_gpios[i].config);
		if (rc) {
			pr_err("%s: pm8xxx_gpio_config: rc=%d\n", __func__, rc);
			break;
		}
	}

	/* Initial MPP configuration. */
	for (i = 0; i < ARRAY_SIZE(pm8038_mpps); i++) {
		rc = pm8xxx_mpp_config(pm8038_mpps[i].mpp,
					&pm8038_mpps[i].config);
		if (rc) {
			pr_err("%s: pm8xxx_mpp_config: rc=%d\n", __func__, rc);
			break;
		}
	}
}

static struct pm8xxx_adc_amux pm8xxx_adc_channels_data[] = {
	{"vcoin", CHANNEL_VCOIN, CHAN_PATH_SCALING2, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"vbat", CHANNEL_VBAT, CHAN_PATH_SCALING2, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"dcin", CHANNEL_DCIN, CHAN_PATH_SCALING4, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"ichg", CHANNEL_ICHG, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"vph_pwr", CHANNEL_VPH_PWR, CHAN_PATH_SCALING2, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"ibat", CHANNEL_IBAT, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"batt_therm", CHANNEL_BATT_THERM, CHAN_PATH_SCALING1, AMUX_RSV2,
		ADC_DECIMATION_TYPE2, ADC_SCALE_BATT_THERM},
	{"batt_id", CHANNEL_BATT_ID, CHAN_PATH_SCALING1, AMUX_RSV2,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"usbin", CHANNEL_USBIN, CHAN_PATH_SCALING3, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"pmic_therm", CHANNEL_DIE_TEMP, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_PMIC_THERM},
	{"625mv", CHANNEL_625MV, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"125v", CHANNEL_125V, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"chg_temp", CHANNEL_CHG_TEMP, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_DEFAULT},
	{"pa_therm1", ADC_MPP_1_AMUX4, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_PA_THERM},
	{"xo_therm", CHANNEL_MUXOFF, CHAN_PATH_SCALING1, AMUX_RSV0,
		ADC_DECIMATION_TYPE2, ADC_SCALE_XOTHERM},
	{"pa_therm0", ADC_MPP_1_AMUX3, CHAN_PATH_SCALING1, AMUX_RSV1,
		ADC_DECIMATION_TYPE2, ADC_SCALE_PA_THERM},
};

static struct pm8xxx_adc_properties pm8xxx_adc_data = {
	.adc_vdd_reference	= 1800, /* milli-voltage for this adc */
	.bitresolution		= 15,
	.bipolar                = 0,
};

static struct pm8xxx_adc_platform_data pm8xxx_adc_pdata = {
	.adc_channel            = pm8xxx_adc_channels_data,
	.adc_num_board_channel  = ARRAY_SIZE(pm8xxx_adc_channels_data),
	.adc_prop               = &pm8xxx_adc_data,
	.adc_mpp_base		= PM8038_MPP_PM_TO_SYS(1),
};

static struct pm8xxx_irq_platform_data pm8xxx_irq_pdata __devinitdata = {
	.irq_base		= PM8038_IRQ_BASE,
	.devirq			= MSM_GPIO_TO_INT(104),
	.irq_trigger_flag	= IRQF_TRIGGER_LOW,
};

static struct pm8xxx_gpio_platform_data pm8xxx_gpio_pdata __devinitdata = {
	.gpio_base	= PM8038_GPIO_PM_TO_SYS(1),
};

static struct pm8xxx_mpp_platform_data pm8xxx_mpp_pdata __devinitdata = {
	.mpp_base	= PM8038_MPP_PM_TO_SYS(1),
};

static struct pm8xxx_rtc_platform_data pm8xxx_rtc_pdata __devinitdata = {
	.rtc_write_enable	= false,
	.rtc_alarm_powerup	= false,
};

static struct pm8xxx_pwrkey_platform_data pm8xxx_pwrkey_pdata = {
	.pull_up		= 1,
	.kpd_trigger_delay_us	= 15625,
	.wakeup			= 1,
};

static struct pm8xxx_misc_platform_data pm8xxx_misc_pdata = {
	.priority		= 0,
};

static struct pm8038_platform_data pm8038_platform_data __devinitdata = {
	.irq_pdata		= &pm8xxx_irq_pdata,
	.gpio_pdata		= &pm8xxx_gpio_pdata,
	.mpp_pdata		= &pm8xxx_mpp_pdata,
	.rtc_pdata              = &pm8xxx_rtc_pdata,
	.pwrkey_pdata		= &pm8xxx_pwrkey_pdata,
	.misc_pdata		= &pm8xxx_misc_pdata,
	.regulator_pdatas	= msm8930_pm8038_regulator_pdata,
	.adc_pdata		= &pm8xxx_adc_pdata,
};

static struct msm_ssbi_platform_data msm8930_ssbi_pm8038_pdata __devinitdata = {
	.controller_type = MSM_SBI_CTRL_PMIC_ARBITER,
	.slave	= {
		.name			= "pm8038-core",
		.platform_data		= &pm8038_platform_data,
	},
};

void __init msm8930_init_pmic(void)
{
	pmic_reset_irq = PM8038_IRQ_BASE + PM8038_RESOUT_IRQ;
	msm8960_device_ssbi_pmic.dev.platform_data =
				&msm8930_ssbi_pm8038_pdata;
	pm8038_platform_data.num_regulators
		= msm8930_pm8038_regulator_pdata_len;
}