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