1 /*
2  * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #ifndef AXP_H
8 #define AXP_H
9 
10 #include <stdint.h>
11 
12 #define AXP20X_MODE_REG 0x3e
13 #define AXP20X_MODE_I2C 0x00
14 #define AXP20X_MODE_RSB 0x7c
15 
16 #define NA 0xff
17 
18 enum {
19 	AXP803_CHIP_ID = 0x41,
20 	AXP805_CHIP_ID = 0x40,
21 };
22 
23 struct axp_regulator {
24 	const char *dt_name;
25 	uint16_t min_volt;
26 	uint16_t max_volt;
27 	uint16_t step;
28 	unsigned char split;
29 	unsigned char volt_reg;
30 	unsigned char switch_reg;
31 	unsigned char switch_bit;
32 };
33 
34 extern const uint8_t axp_chip_id;
35 extern const char *const axp_compatible;
36 extern const struct axp_regulator axp_regulators[];
37 
38 /*
39  * Since the PMIC can be connected to multiple bus types,
40  * low-level read/write functions must be provided by the platform
41  */
42 int axp_read(uint8_t reg);
43 int axp_write(uint8_t reg, uint8_t val);
44 int axp_clrsetbits(uint8_t reg, uint8_t clr_mask, uint8_t set_mask);
45 #define axp_clrbits(reg, clr_mask) axp_clrsetbits(reg, clr_mask, 0)
46 #define axp_setbits(reg, set_mask) axp_clrsetbits(reg, 0, set_mask)
47 
48 int axp_check_id(void);
49 void axp_power_off(void);
50 void axp_setup_regulators(const void *fdt);
51 
52 #endif /* AXP_H */
53