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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 NA 0xff
13 
14 enum {
15 	AXP803_CHIP_ID = 0x41,
16 	AXP805_CHIP_ID = 0x40,
17 };
18 
19 struct axp_regulator {
20 	const char *dt_name;
21 	uint16_t min_volt;
22 	uint16_t max_volt;
23 	uint16_t step;
24 	unsigned char split;
25 	unsigned char volt_reg;
26 	unsigned char switch_reg;
27 	unsigned char switch_bit;
28 };
29 
30 extern const uint8_t axp_chip_id;
31 extern const char *const axp_compatible;
32 extern const struct axp_regulator axp_regulators[];
33 
34 /*
35  * Since the PMIC can be connected to multiple bus types,
36  * low-level read/write functions must be provided by the platform
37  */
38 int axp_read(uint8_t reg);
39 int axp_write(uint8_t reg, uint8_t val);
40 int axp_clrsetbits(uint8_t reg, uint8_t clr_mask, uint8_t set_mask);
41 #define axp_clrbits(reg, clr_mask) axp_clrsetbits(reg, clr_mask, 0)
42 #define axp_setbits(reg, set_mask) axp_clrsetbits(reg, 0, set_mask)
43 
44 int axp_check_id(void);
45 void axp_power_off(void);
46 void axp_setup_regulators(const void *fdt);
47 
48 #endif /* AXP_H */
49