supply.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * supply.h  --  Power Supply Driver for Wolfson WM8350 PMIC
  4 *
  5 * Copyright 2007 Wolfson Microelectronics PLC
  6 */
  7
  8#ifndef __LINUX_MFD_WM8350_SUPPLY_H_
  9#define __LINUX_MFD_WM8350_SUPPLY_H_
 10
 11#include <linux/mutex.h>
 12#include <linux/power_supply.h>
 13
 14/*
 15 * Charger registers
 16 */
 17#define WM8350_BATTERY_CHARGER_CONTROL_1        0xA8
 18#define WM8350_BATTERY_CHARGER_CONTROL_2        0xA9
 19#define WM8350_BATTERY_CHARGER_CONTROL_3        0xAA
 20
 21/*
 22 * R168 (0xA8) - Battery Charger Control 1
 23 */
 24#define WM8350_CHG_ENA_R168                     0x8000
 25#define WM8350_CHG_THR                          0x2000
 26#define WM8350_CHG_EOC_SEL_MASK                 0x1C00
 27#define WM8350_CHG_TRICKLE_TEMP_CHOKE           0x0200
 28#define WM8350_CHG_TRICKLE_USB_CHOKE            0x0100
 29#define WM8350_CHG_RECOVER_T                    0x0080
 30#define WM8350_CHG_END_ACT                      0x0040
 31#define WM8350_CHG_FAST                         0x0020
 32#define WM8350_CHG_FAST_USB_THROTTLE            0x0010
 33#define WM8350_CHG_NTC_MON                      0x0008
 34#define WM8350_CHG_BATT_HOT_MON                 0x0004
 35#define WM8350_CHG_BATT_COLD_MON                0x0002
 36#define WM8350_CHG_CHIP_TEMP_MON                0x0001
 37
 38/*
 39 * R169 (0xA9) - Battery Charger Control 2
 40 */
 41#define WM8350_CHG_ACTIVE                       0x8000
 42#define WM8350_CHG_PAUSE                        0x4000
 43#define WM8350_CHG_STS_MASK                     0x3000
 44#define WM8350_CHG_TIME_MASK                    0x0F00
 45#define WM8350_CHG_MASK_WALL_FB                 0x0080
 46#define WM8350_CHG_TRICKLE_SEL                  0x0040
 47#define WM8350_CHG_VSEL_MASK                    0x0030
 48#define WM8350_CHG_ISEL_MASK                    0x000F
 49#define WM8350_CHG_STS_OFF                      0x0000
 50#define WM8350_CHG_STS_TRICKLE                  0x1000
 51#define WM8350_CHG_STS_FAST                     0x2000
 52
 53/*
 54 * R170 (0xAA) - Battery Charger Control 3
 55 */
 56#define WM8350_CHG_THROTTLE_T_MASK              0x0060
 57#define WM8350_CHG_SMART                        0x0010
 58#define WM8350_CHG_TIMER_ADJT_MASK              0x000F
 59
 60/*
 61 * Charger Interrupts
 62 */
 63#define WM8350_IRQ_CHG_BAT_HOT			0
 64#define WM8350_IRQ_CHG_BAT_COLD			1
 65#define WM8350_IRQ_CHG_BAT_FAIL			2
 66#define WM8350_IRQ_CHG_TO			3
 67#define WM8350_IRQ_CHG_END			4
 68#define WM8350_IRQ_CHG_START			5
 69#define WM8350_IRQ_CHG_FAST_RDY			6
 70#define WM8350_IRQ_CHG_VBATT_LT_3P9		10
 71#define WM8350_IRQ_CHG_VBATT_LT_3P1		11
 72#define WM8350_IRQ_CHG_VBATT_LT_2P85		12
 73
 74/*
 75 * Charger Policy
 76 */
 77#define WM8350_CHG_TRICKLE_50mA			(0 << 6)
 78#define WM8350_CHG_TRICKLE_100mA		(1 << 6)
 79#define WM8350_CHG_4_05V			(0 << 4)
 80#define WM8350_CHG_4_10V			(1 << 4)
 81#define WM8350_CHG_4_15V			(2 << 4)
 82#define WM8350_CHG_4_20V			(3 << 4)
 83#define WM8350_CHG_FAST_LIMIT_mA(x)		((x / 50) & 0xf)
 84#define WM8350_CHG_EOC_mA(x)			(((x - 10) & 0x7) << 10)
 85#define WM8350_CHG_TRICKLE_3_1V			(0 << 13)
 86#define WM8350_CHG_TRICKLE_3_9V			(1 << 13)
 87
 88/*
 89 * Supply Registers.
 90 */
 91#define WM8350_USB_VOLTAGE_READBACK             0x9C
 92#define WM8350_LINE_VOLTAGE_READBACK            0x9D
 93#define WM8350_BATT_VOLTAGE_READBACK            0x9E
 94
 95/*
 96 * Supply Interrupts.
 97 */
 98#define WM8350_IRQ_USB_LIMIT			15
 99#define WM8350_IRQ_EXT_USB_FB			36
100#define WM8350_IRQ_EXT_WALL_FB			37
101#define WM8350_IRQ_EXT_BAT_FB			38
102
103/*
104 * Policy to control charger state machine.
105 */
106struct wm8350_charger_policy {
107
108	/* charger state machine policy  - set in machine driver */
109	int eoc_mA;		/* end of charge current (mA)  */
110	int charge_mV;		/* charge voltage */
111	int fast_limit_mA;	/* fast charge current limit */
112	int fast_limit_USB_mA;	/* USB fast charge current limit */
113	int charge_timeout;	/* charge timeout (mins) */
114	int trickle_start_mV;	/* trickle charge starts at mV */
115	int trickle_charge_mA;	/* trickle charge current */
116	int trickle_charge_USB_mA;	/* USB trickle charge current */
117};
118
119struct wm8350_power {
120	struct platform_device *pdev;
121	struct power_supply *battery;
122	struct power_supply *usb;
123	struct power_supply *ac;
124	struct wm8350_charger_policy *policy;
125
126	int rev_g_coeff;
127};
128
129#endif