mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
131 lines
2.9 KiB
C
131 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
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*/
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#ifndef __ASM_ACPI_S3_H__
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#define __ASM_ACPI_S3_H__
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#define WAKEUP_BASE 0x600
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/* PM1_STATUS register */
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#define WAK_STS (1 << 15)
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#define PCIEXPWAK_STS (1 << 14)
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#define RTC_STS (1 << 10)
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#define SLPBTN_STS (1 << 9)
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#define PWRBTN_STS (1 << 8)
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#define GBL_STS (1 << 5)
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#define BM_STS (1 << 4)
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#define TMR_STS (1 << 0)
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/* PM1_CNT register */
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#define SLP_EN (1 << 13)
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#define SLP_TYP_SHIFT 10
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#define SLP_TYP (7 << SLP_TYP_SHIFT)
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#define SLP_TYP_S0 0
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#define SLP_TYP_S1 1
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#define SLP_TYP_S3 5
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#define SLP_TYP_S4 6
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#define SLP_TYP_S5 7
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/* Memory size reserved for S3 resume */
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#define S3_RESERVE_SIZE 0x1000
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#ifndef __ASSEMBLY__
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extern char __wakeup[];
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extern int __wakeup_size;
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enum acpi_sleep_state {
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ACPI_S0,
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ACPI_S1,
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ACPI_S2,
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ACPI_S3,
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ACPI_S4,
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ACPI_S5,
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};
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/**
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* acpi_ss_string() - get ACPI-defined sleep state string
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*
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* @pm1_cnt: ACPI-defined sleep state
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* @return: a pointer to the sleep state string.
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*/
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static inline char *acpi_ss_string(enum acpi_sleep_state state)
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{
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char *ss_string[] = { "S0", "S1", "S2", "S3", "S4", "S5"};
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return ss_string[state];
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}
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/**
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* acpi_sleep_from_pm1() - get ACPI-defined sleep state from PM1_CNT register
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*
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* @pm1_cnt: PM1_CNT register value
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* @return: ACPI-defined sleep state if given valid PM1_CNT register value,
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* -EINVAL otherwise.
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*/
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static inline enum acpi_sleep_state acpi_sleep_from_pm1(u32 pm1_cnt)
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{
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switch ((pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) {
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case SLP_TYP_S0:
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return ACPI_S0;
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case SLP_TYP_S1:
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return ACPI_S1;
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case SLP_TYP_S3:
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return ACPI_S3;
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case SLP_TYP_S4:
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return ACPI_S4;
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case SLP_TYP_S5:
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return ACPI_S5;
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}
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return -EINVAL;
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}
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/**
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* chipset_prev_sleep_state() - Get chipset previous sleep state
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*
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* This returns chipset previous sleep state from ACPI registers.
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* Platform codes must supply this routine in order to support ACPI S3.
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*
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* @return ACPI_S0/S1/S2/S3/S4/S5.
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*/
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enum acpi_sleep_state chipset_prev_sleep_state(void);
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/**
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* chipset_clear_sleep_state() - Clear chipset sleep state
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*
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* This clears chipset sleep state in ACPI registers.
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* Platform codes must supply this routine in order to support ACPI S3.
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*/
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void chipset_clear_sleep_state(void);
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struct acpi_fadt;
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/**
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* acpi_resume() - Do ACPI S3 resume
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*
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* This calls U-Boot wake up assembly stub and jumps to OS's wake up vector.
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*
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* @fadt: FADT table pointer in the ACPI table
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* @return: Never returns
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*/
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void acpi_resume(struct acpi_fadt *fadt);
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/**
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* acpi_s3_reserve() - Reserve memory for ACPI S3 resume
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*
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* This copies memory where real mode interrupt handler stubs reside to the
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* reserved place on the stack.
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*
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* This routine should be called by reserve_arch() before U-Boot is relocated
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* when ACPI S3 resume is enabled.
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*
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* @return: 0 always
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*/
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int acpi_s3_reserve(void);
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_ACPI_S3_H__ */
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