/*
* supply.h -- Power Supply Driver for Wolfson WM8350 PMIC
*
* Copyright 2007 Wolfson Microelectronics PLC
*
* 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.
*
*/

#ifndef __LINUX_MFD_WM8350_SUPPLY_H_
#define __LINUX_MFD_WM8350_SUPPLY_H_

#include <linux/mutex.h>
#include <linux/power_supply.h>

/*
* Charger registers
*/
#define WM8350_BATTERY_CHARGER_CONTROL_1 0xA8
#define WM8350_BATTERY_CHARGER_CONTROL_2 0xA9
#define WM8350_BATTERY_CHARGER_CONTROL_3 0xAA

/*
* R168 (0xA8) - Battery Charger Control 1
*/
#define WM8350_CHG_ENA_R168 0x8000
#define WM8350_CHG_THR 0x2000
#define WM8350_CHG_EOC_SEL_MASK 0x1C00
#define WM8350_CHG_TRICKLE_TEMP_CHOKE 0x0200
#define WM8350_CHG_TRICKLE_USB_CHOKE 0x0100
#define WM8350_CHG_RECOVER_T 0x0080
#define WM8350_CHG_END_ACT 0x0040
#define WM8350_CHG_FAST 0x0020
#define WM8350_CHG_FAST_USB_THROTTLE 0x0010
#define WM8350_CHG_NTC_MON 0x0008
#define WM8350_CHG_BATT_HOT_MON 0x0004
#define WM8350_CHG_BATT_COLD_MON 0x0002
#define WM8350_CHG_CHIP_TEMP_MON 0x0001

/*
* R169 (0xA9) - Battery Charger Control 2
*/
#define WM8350_CHG_ACTIVE 0x8000
#define WM8350_CHG_PAUSE 0x4000
#define WM8350_CHG_STS_MASK 0x3000
#define WM8350_CHG_TIME_MASK 0x0F00
#define WM8350_CHG_MASK_WALL_FB 0x0080
#define WM8350_CHG_TRICKLE_SEL 0x0040
#define WM8350_CHG_VSEL_MASK 0x0030
#define WM8350_CHG_ISEL_MASK 0x000F
#define WM8350_CHG_STS_OFF 0x0000
#define WM8350_CHG_STS_TRICKLE 0x1000
#define WM8350_CHG_STS_FAST 0x2000

/*
* R170 (0xAA) - Battery Charger Control 3
*/
#define WM8350_CHG_THROTTLE_T_MASK 0x0060
#define WM8350_CHG_SMART 0x0010
#define WM8350_CHG_TIMER_ADJT_MASK 0x000F

/*
* Charger Interrupts
*/
#define WM8350_IRQ_CHG_BAT_HOT 0
#define WM8350_IRQ_CHG_BAT_COLD 1
#define WM8350_IRQ_CHG_BAT_FAIL 2
#define WM8350_IRQ_CHG_TO 3
#define WM8350_IRQ_CHG_END 4
#define WM8350_IRQ_CHG_START 5
#define WM8350_IRQ_CHG_FAST_RDY 6
#define WM8350_IRQ_CHG_VBATT_LT_3P9 10
#define WM8350_IRQ_CHG_VBATT_LT_3P1 11
#define WM8350_IRQ_CHG_VBATT_LT_2P85 12

/*
* Charger Policy
*/
#define WM8350_CHG_TRICKLE_50mA (0 << 6)
#define WM8350_CHG_TRICKLE_100mA (1 << 6)
#define WM8350_CHG_4_05V (0 << 4)
#define WM8350_CHG_4_10V (1 << 4)
#define WM8350_CHG_4_15V (2 << 4)
#define WM8350_CHG_4_20V (3 << 4)
#define WM8350_CHG_FAST_LIMIT_mA(x) ((x / 50) & 0xf)
#define WM8350_CHG_EOC_mA(x) (((x - 10) & 0x7) << 10)
#define WM8350_CHG_TRICKLE_3_1V (0 << 13)
#define WM8350_CHG_TRICKLE_3_9V (1 << 13)

/*
* Supply Registers.
*/
#define WM8350_USB_VOLTAGE_READBACK 0x9C
#define WM8350_LINE_VOLTAGE_READBACK 0x9D
#define WM8350_BATT_VOLTAGE_READBACK 0x9E

/*
* Supply Interrupts.
*/
#define WM8350_IRQ_USB_LIMIT 15
#define WM8350_IRQ_EXT_USB_FB 36
#define WM8350_IRQ_EXT_WALL_FB 37
#define WM8350_IRQ_EXT_BAT_FB 38

/*
* Policy to control charger state machine.
*/
struct wm8350_charger_policy {

/* charger state machine policy - set in machine driver */
int eoc_mA; /* end of charge current (mA) */
int charge_mV; /* charge voltage */
int fast_limit_mA; /* fast charge current limit */
int fast_limit_USB_mA; /* USB fast charge current limit */
int charge_timeout; /* charge timeout (mins) */
int trickle_start_mV; /* trickle charge starts at mV */
int trickle_charge_mA; /* trickle charge current */
int trickle_charge_USB_mA; /* USB trickle charge current */
};

struct wm8350_power {
struct platform_device *pdev;
struct power_supply battery;
struct power_supply usb;
struct power_supply ac;
struct wm8350_charger_policy *policy;

int rev_g_coeff;
};

#endif