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 */
111struct 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
124struct 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