135 lines
4.2 KiB
C
135 lines
4.2 KiB
C
/*
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* supply.h -- Power Supply Driver for Wolfson WM8350 PMIC
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*
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* Copyright 2007 Wolfson Microelectronics PLC
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef __LINUX_MFD_WM8350_SUPPLY_H_
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#define __LINUX_MFD_WM8350_SUPPLY_H_
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#include <linux/mutex.h>
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#include <linux/power_supply.h>
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/*
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* Charger registers
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*/
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#define WM8350_BATTERY_CHARGER_CONTROL_1 0xA8
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#define WM8350_BATTERY_CHARGER_CONTROL_2 0xA9
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#define WM8350_BATTERY_CHARGER_CONTROL_3 0xAA
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/*
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* R168 (0xA8) - Battery Charger Control 1
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*/
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#define WM8350_CHG_ENA_R168 0x8000
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#define WM8350_CHG_THR 0x2000
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#define WM8350_CHG_EOC_SEL_MASK 0x1C00
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#define WM8350_CHG_TRICKLE_TEMP_CHOKE 0x0200
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#define WM8350_CHG_TRICKLE_USB_CHOKE 0x0100
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#define WM8350_CHG_RECOVER_T 0x0080
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#define WM8350_CHG_END_ACT 0x0040
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#define WM8350_CHG_FAST 0x0020
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#define WM8350_CHG_FAST_USB_THROTTLE 0x0010
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#define WM8350_CHG_NTC_MON 0x0008
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#define WM8350_CHG_BATT_HOT_MON 0x0004
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#define WM8350_CHG_BATT_COLD_MON 0x0002
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#define WM8350_CHG_CHIP_TEMP_MON 0x0001
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/*
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* R169 (0xA9) - Battery Charger Control 2
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*/
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#define WM8350_CHG_ACTIVE 0x8000
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#define WM8350_CHG_PAUSE 0x4000
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#define WM8350_CHG_STS_MASK 0x3000
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#define WM8350_CHG_TIME_MASK 0x0F00
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#define WM8350_CHG_MASK_WALL_FB 0x0080
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#define WM8350_CHG_TRICKLE_SEL 0x0040
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#define WM8350_CHG_VSEL_MASK 0x0030
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#define WM8350_CHG_ISEL_MASK 0x000F
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#define WM8350_CHG_STS_OFF 0x0000
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#define WM8350_CHG_STS_TRICKLE 0x1000
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#define WM8350_CHG_STS_FAST 0x2000
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/*
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* R170 (0xAA) - Battery Charger Control 3
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*/
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#define WM8350_CHG_THROTTLE_T_MASK 0x0060
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#define WM8350_CHG_SMART 0x0010
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#define WM8350_CHG_TIMER_ADJT_MASK 0x000F
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/*
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* Charger Interrupts
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*/
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#define WM8350_IRQ_CHG_BAT_HOT 0
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#define WM8350_IRQ_CHG_BAT_COLD 1
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#define WM8350_IRQ_CHG_BAT_FAIL 2
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#define WM8350_IRQ_CHG_TO 3
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#define WM8350_IRQ_CHG_END 4
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#define WM8350_IRQ_CHG_START 5
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#define WM8350_IRQ_CHG_FAST_RDY 6
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#define WM8350_IRQ_CHG_VBATT_LT_3P9 10
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#define WM8350_IRQ_CHG_VBATT_LT_3P1 11
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#define WM8350_IRQ_CHG_VBATT_LT_2P85 12
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/*
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* Charger Policy
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*/
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#define WM8350_CHG_TRICKLE_50mA (0 << 6)
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#define WM8350_CHG_TRICKLE_100mA (1 << 6)
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#define WM8350_CHG_4_05V (0 << 4)
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#define WM8350_CHG_4_10V (1 << 4)
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#define WM8350_CHG_4_15V (2 << 4)
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#define WM8350_CHG_4_20V (3 << 4)
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#define WM8350_CHG_FAST_LIMIT_mA(x) ((x / 50) & 0xf)
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#define WM8350_CHG_EOC_mA(x) (((x - 10) & 0x7) << 10)
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#define WM8350_CHG_TRICKLE_3_1V (0 << 13)
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#define WM8350_CHG_TRICKLE_3_9V (1 << 13)
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/*
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* Supply Registers.
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*/
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#define WM8350_USB_VOLTAGE_READBACK 0x9C
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#define WM8350_LINE_VOLTAGE_READBACK 0x9D
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#define WM8350_BATT_VOLTAGE_READBACK 0x9E
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/*
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* Supply Interrupts.
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*/
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#define WM8350_IRQ_USB_LIMIT 15
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#define WM8350_IRQ_EXT_USB_FB 36
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#define WM8350_IRQ_EXT_WALL_FB 37
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#define WM8350_IRQ_EXT_BAT_FB 38
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/*
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* Policy to control charger state machine.
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*/
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struct wm8350_charger_policy {
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/* charger state machine policy - set in machine driver */
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int eoc_mA; /* end of charge current (mA) */
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int charge_mV; /* charge voltage */
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int fast_limit_mA; /* fast charge current limit */
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int fast_limit_USB_mA; /* USB fast charge current limit */
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int charge_timeout; /* charge timeout (mins) */
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int trickle_start_mV; /* trickle charge starts at mV */
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int trickle_charge_mA; /* trickle charge current */
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int trickle_charge_USB_mA; /* USB trickle charge current */
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};
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struct wm8350_power {
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struct platform_device *pdev;
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struct power_supply *battery;
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struct power_supply *usb;
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struct power_supply *ac;
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struct wm8350_charger_policy *policy;
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int rev_g_coeff;
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};
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#endif
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