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usr
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src
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linux-headers-5.4.0-215
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include
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linux
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Filename :
acpi_pmtmr.h
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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ACPI_PMTMR_H_ #define _ACPI_PMTMR_H_ #include <linux/clocksource.h> /* Number of PMTMR ticks expected during calibration run */ #define PMTMR_TICKS_PER_SEC 3579545 /* limit it to 24 bits */ #define ACPI_PM_MASK CLOCKSOURCE_MASK(24) /* Overrun value */ #define ACPI_PM_OVRRUN (1<<24) #ifdef CONFIG_X86_PM_TIMER extern u32 acpi_pm_read_verified(void); extern u32 pmtmr_ioport; static inline u32 acpi_pm_read_early(void) { if (!pmtmr_ioport) return 0; /* mask the output to 24 bits */ return acpi_pm_read_verified() & ACPI_PM_MASK; } #else static inline u32 acpi_pm_read_early(void) { return 0; } #endif #endif