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
51 #if SUNXI_SETUP_REGULATORS == 1
52 void axp_setup_regulators(const void *fdt);
53 #else
axp_setup_regulators(const void * fdt)54 static inline void axp_setup_regulators(const void *fdt)
55 {
56 }
57 #endif
58
59 #endif /* AXP_H */
60