1 /* 2 * supply.h -- Power Supply Driver for Wolfson WM8350 PMIC 3 * 4 * Copyright 2007 Wolfson Microelectronics PLC 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 * 11 */ 12 13 #ifndef __LINUX_MFD_WM8350_SUPPLY_H_ 14 #define __LINUX_MFD_WM8350_SUPPLY_H_ 15 16 #include <linux/mutex.h> 17 #include <linux/power_supply.h> 18 19 /* 20 * Charger registers 21 */ 22 #define WM8350_BATTERY_CHARGER_CONTROL_1 0xA8 23 #define WM8350_BATTERY_CHARGER_CONTROL_2 0xA9 24 #define WM8350_BATTERY_CHARGER_CONTROL_3 0xAA 25 26 /* 27 * R168 (0xA8) - Battery Charger Control 1 28 */ 29 #define WM8350_CHG_ENA_R168 0x8000 30 #define WM8350_CHG_THR 0x2000 31 #define WM8350_CHG_EOC_SEL_MASK 0x1C00 32 #define WM8350_CHG_TRICKLE_TEMP_CHOKE 0x0200 33 #define WM8350_CHG_TRICKLE_USB_CHOKE 0x0100 34 #define WM8350_CHG_RECOVER_T 0x0080 35 #define WM8350_CHG_END_ACT 0x0040 36 #define WM8350_CHG_FAST 0x0020 37 #define WM8350_CHG_FAST_USB_THROTTLE 0x0010 38 #define WM8350_CHG_NTC_MON 0x0008 39 #define WM8350_CHG_BATT_HOT_MON 0x0004 40 #define WM8350_CHG_BATT_COLD_MON 0x0002 41 #define WM8350_CHG_CHIP_TEMP_MON 0x0001 42 43 /* 44 * R169 (0xA9) - Battery Charger Control 2 45 */ 46 #define WM8350_CHG_ACTIVE 0x8000 47 #define WM8350_CHG_PAUSE 0x4000 48 #define WM8350_CHG_STS_MASK 0x3000 49 #define WM8350_CHG_TIME_MASK 0x0F00 50 #define WM8350_CHG_MASK_WALL_FB 0x0080 51 #define WM8350_CHG_TRICKLE_SEL 0x0040 52 #define WM8350_CHG_VSEL_MASK 0x0030 53 #define WM8350_CHG_ISEL_MASK 0x000F 54 #define WM8350_CHG_STS_OFF 0x0000 55 #define WM8350_CHG_STS_TRICKLE 0x1000 56 #define WM8350_CHG_STS_FAST 0x2000 57 58 /* 59 * R170 (0xAA) - Battery Charger Control 3 60 */ 61 #define WM8350_CHG_THROTTLE_T_MASK 0x0060 62 #define WM8350_CHG_SMART 0x0010 63 #define WM8350_CHG_TIMER_ADJT_MASK 0x000F 64 65 /* 66 * Charger Interrupts 67 */ 68 #define WM8350_IRQ_CHG_BAT_HOT 0 69 #define WM8350_IRQ_CHG_BAT_COLD 1 70 #define WM8350_IRQ_CHG_BAT_FAIL 2 71 #define WM8350_IRQ_CHG_TO 3 72 #define WM8350_IRQ_CHG_END 4 73 #define WM8350_IRQ_CHG_START 5 74 #define WM8350_IRQ_CHG_FAST_RDY 6 75 #define WM8350_IRQ_CHG_VBATT_LT_3P9 10 76 #define WM8350_IRQ_CHG_VBATT_LT_3P1 11 77 #define WM8350_IRQ_CHG_VBATT_LT_2P85 12 78 79 /* 80 * Charger Policy 81 */ 82 #define WM8350_CHG_TRICKLE_50mA (0 << 6) 83 #define WM8350_CHG_TRICKLE_100mA (1 << 6) 84 #define WM8350_CHG_4_05V (0 << 4) 85 #define WM8350_CHG_4_10V (1 << 4) 86 #define WM8350_CHG_4_15V (2 << 4) 87 #define WM8350_CHG_4_20V (3 << 4) 88 #define WM8350_CHG_FAST_LIMIT_mA(x) ((x / 50) & 0xf) 89 #define WM8350_CHG_EOC_mA(x) (((x - 10) & 0x7) << 10) 90 #define WM8350_CHG_TRICKLE_3_1V (0 << 13) 91 #define WM8350_CHG_TRICKLE_3_9V (1 << 13) 92 93 /* 94 * Supply Registers. 95 */ 96 #define WM8350_USB_VOLTAGE_READBACK 0x9C 97 #define WM8350_LINE_VOLTAGE_READBACK 0x9D 98 #define WM8350_BATT_VOLTAGE_READBACK 0x9E 99 100 /* 101 * Supply Interrupts. 102 */ 103 #define WM8350_IRQ_USB_LIMIT 15 104 #define WM8350_IRQ_EXT_USB_FB 36 105 #define WM8350_IRQ_EXT_WALL_FB 37 106 #define WM8350_IRQ_EXT_BAT_FB 38 107 108 /* 109 * Policy to control charger state machine. 110 */ 111 struct wm8350_charger_policy { 112 113 /* charger state machine policy - set in machine driver */ 114 int eoc_mA; /* end of charge current (mA) */ 115 int charge_mV; /* charge voltage */ 116 int fast_limit_mA; /* fast charge current limit */ 117 int fast_limit_USB_mA; /* USB fast charge current limit */ 118 int charge_timeout; /* charge timeout (mins) */ 119 int trickle_start_mV; /* trickle charge starts at mV */ 120 int trickle_charge_mA; /* trickle charge current */ 121 int trickle_charge_USB_mA; /* USB trickle charge current */ 122 }; 123 124 struct wm8350_power { 125 struct platform_device *pdev; 126 struct power_supply battery; 127 struct power_supply usb; 128 struct power_supply ac; 129 struct wm8350_charger_policy *policy; 130 131 int rev_g_coeff; 132 }; 133 134 #endif 135