kernel/include/linux/mfd/wm8350/supply.h

   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