2 * Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
4 * SPDX-License-Identifier: GPL-2.0+
7 #ifndef __ASM_ACPI_S3_H__
8 #define __ASM_ACPI_S3_H__
10 /* PM1_STATUS register */
11 #define WAK_STS (1 << 15)
12 #define PCIEXPWAK_STS (1 << 14)
13 #define RTC_STS (1 << 10)
14 #define SLPBTN_STS (1 << 9)
15 #define PWRBTN_STS (1 << 8)
16 #define GBL_STS (1 << 5)
17 #define BM_STS (1 << 4)
18 #define TMR_STS (1 << 0)
20 /* PM1_CNT register */
21 #define SLP_EN (1 << 13)
22 #define SLP_TYP_SHIFT 10
23 #define SLP_TYP (7 << SLP_TYP_SHIFT)
30 enum acpi_sleep_state {
40 * acpi_ss_string() - get ACPI-defined sleep state string
42 * @pm1_cnt: ACPI-defined sleep state
43 * @return: a pointer to the sleep state string.
45 static inline char *acpi_ss_string(enum acpi_sleep_state state)
47 char *ss_string[] = { "S0", "S1", "S2", "S3", "S4", "S5"};
49 return ss_string[state];
53 * acpi_sleep_from_pm1() - get ACPI-defined sleep state from PM1_CNT register
55 * @pm1_cnt: PM1_CNT register value
56 * @return: ACPI-defined sleep state if given valid PM1_CNT register value,
59 static inline enum acpi_sleep_state acpi_sleep_from_pm1(u32 pm1_cnt)
61 switch ((pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) {
78 * chipset_prev_sleep_state() - Get chipset previous sleep state
80 * This returns chipset previous sleep state from ACPI registers.
81 * Platform codes must supply this routine in order to support ACPI S3.
83 * @return ACPI_S0/S1/S2/S3/S4/S5.
85 enum acpi_sleep_state chipset_prev_sleep_state(void);
88 * chipset_clear_sleep_state() - Clear chipset sleep state
90 * This clears chipset sleep state in ACPI registers.
91 * Platform codes must supply this routine in order to support ACPI S3.
93 void chipset_clear_sleep_state(void);
95 #endif /* __ASM_ACPI_S3_H__ */