1
/*
2
 * Battery charger driver for Nintendo Switch's TI BQ24193
3
 *
4
 * Copyright (c) 2018 CTCaer
5
 *
6
 * This program is free software; you can redistribute it and/or modify it
7
 * under the terms and conditions of the GNU General Public License,
8
 * version 2, as published by the Free Software Foundation.
9
 *
10
 * This program is distributed in the hope it will be useful, but WITHOUT
11
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13
 * more details.
14
 *
15
 * You should have received a copy of the GNU General Public License
16
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
 */
18

19
#ifndef __BQ24193_H_
20
#define __BQ24193_H_
21

22
#define BQ24193_I2C_ADDR 0x6B
23

24
// REG 0 masks.
25
#define BQ24193_INCONFIG_INLIMIT_MASK (7<<0)
26
#define BQ24193_INCONFIG_VINDPM_MASK   0x78
27
#define BQ24193_INCONFIG_HIZ_EN_MASK  (1<<7)
28

29
// REG 1 masks.
30
#define BQ24193_PORCONFIG_BOOST_MASK       (1<<0)
31
#define BQ24193_PORCONFIG_SYSMIN_MASK      (7<<1) // 3000uV HOS default.
32
#define BQ24193_PORCONFIG_CHGCONFIG_MASK   (3<<4)
33
#define BQ24193_PORCONFIG_CHGCONFIG_CHARGER_EN (1<<4)
34
#define BQ24193_PORCONFIG_I2CWATCHDOG_MASK (1<<6)
35
#define BQ24193_PORCONFIG_RESET_MASK       (1<<7)
36

37
// REG 2 masks.
38
#define BQ24193_CHRGCURR_20PCT_MASK (1<<0)
39
#define BQ24193_CHRGCURR_ICHG_MASK   0xFC
40

41
// REG 3 masks.
42
#define BQ24193_PRECHRG_ITERM   0x0F
43
#define BQ24193_PRECHRG_IPRECHG 0xF0
44

45
// REG 4 masks.
46
#define BQ24193_CHRGVOLT_VTHRES  (1<<0)
47
#define BQ24193_CHRGVOLT_BATTLOW (1<<1)
48
#define BQ24193_CHRGVOLT_VREG     0xFC
49

50
// REG 5 masks.
51
#define BQ24193_CHRGTERM_ISET_MASK     (1<<0)
52
#define BQ24193_CHRGTERM_CHGTIMER_MASK (3<<1)
53
#define BQ24193_CHRGTERM_ENTIMER_MASK  (1<<3)
54
#define BQ24193_CHRGTERM_WATCHDOG_MASK (3<<4)
55
#define BQ24193_CHRGTERM_TERM_ST_MASK  (1<<6)
56
#define BQ24193_CHRGTERM_TERM_EN_MASK  (1<<7)
57

58
// REG 6 masks.
59
#define BQ24193_IRTHERMAL_THERM_MASK    (3<<0)
60
#define BQ24193_IRTHERMAL_VCLAMP_MASK   (7<<2)
61
#define BQ24193_IRTHERMAL_BATTCOMP_MASK (7<<5)
62

63
// REG 7 masks.
64
#define BQ24193_MISC_INT_MASK       (3<<0)
65
#define BQ24193_MISC_VSET_MASK      (1<<4)
66
#define BQ24193_MISC_BATFET_DI_MASK (1<<5)
67
#define BQ24193_MISC_TMR2X_EN_MASK  (1<<6)
68
#define BQ24193_MISC_DPDM_EN_MASK   (1<<7)
69

70
// REG 8 masks.
71
#define BQ24193_STATUS_VSYS_MASK  (1<<0)
72
#define BQ24193_STATUS_THERM_MASK (1<<1)
73
#define BQ24193_STATUS_PG_MASK    (1<<2)
74
#define BQ24193_STATUS_DPM_MASK   (1<<3)
75
#define BQ24193_STATUS_CHRG_MASK  (3<<4)
76
#define BQ24193_STATUS_VBUS_MASK  (3<<6)
77

78
// REG 9 masks.
79
#define BQ24193_FAULT_THERM_MASK    (7<<0)
80
#define BQ24193_FAULT_BATT_OVP_MASK (1<<3)
81
#define BQ24193_FAULT_CHARGE_MASK   (3<<4)
82
#define BQ24193_FAULT_BOOST_MASK    (1<<6)
83
#define BQ24193_FAULT_WATCHDOG_MASK (1<<7)
84

85
// REG A masks.
86
#define BQ24193_VENDORPART_DEV_MASK (3<<0)
87
#define BQ24193_VENDORPART_PN_MASK  (7<<3)
88

89
enum BQ24193_reg {
90
	BQ24193_InputSource     = 0x00,
91
	BQ24193_PORConfig       = 0x01,
92
	BQ24193_ChrgCurr        = 0x02,
93
	BQ24193_PreChrgTerm     = 0x03,
94
	BQ24193_ChrgVolt        = 0x04,
95
	BQ24193_ChrgTermTimer   = 0x05,
96
	BQ24193_IRCompThermal   = 0x06,
97
	BQ24193_Misc            = 0x07,
98
	BQ24193_Status          = 0x08,
99
	BQ24193_FaultReg        = 0x09,
100
	BQ24193_VendorPart      = 0x0A,
101
};
102

103
enum BQ24193_reg_prop {
104
	BQ24193_InputVoltageLimit,      // REG 0.
105
	BQ24193_InputCurrentLimit,      // REG 0.
106
	BQ24193_SystemMinimumVoltage,   // REG 1.
107
	BQ24193_FastChargeCurrentLimit, // REG 2.
108
	BQ24193_ChargeVoltageLimit,     // REG 4.
109
	BQ24193_RechargeThreshold,      // REG 4.
110
	BQ24193_ThermalRegulation,      // REG 6.
111
	BQ24193_ChargeStatus,           // REG 8.
112
	BQ24193_TempStatus,             // REG 9.
113
	BQ24193_DevID,                  // REG A.
114
	BQ24193_ProductNumber,          // REG A.
115
};
116

117
int bq24193_get_property(enum BQ24193_reg_prop prop, int *value);
118
void bq24193_enable_charger();
119
void bq24193_fake_battery_removal();
120

121
#endif /* __BQ24193_H_ */
122

123