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 */
106 struct 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
119 struct 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
130
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