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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/acpi_pmtmr.h
1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/clocksource.h>
7 /* Number of PMTMR ticks expected during calibration run */
8 #define PMTMR_TICKS_PER_SEC 3579545
10 /* limit it to 24 bits */
11 #define ACPI_PM_MASK CLOCKSOURCE_MASK(24)
14 #define ACPI_PM_OVRRUN (1<<24)
16 #ifdef CONFIG_X86_PM_TIMER
18 extern u32
acpi_pm_read_verified(void);
19 extern u32 pmtmr_ioport
;
21 static inline u32
acpi_pm_read_early(void)
25 /* mask the output to 24 bits */
26 return acpi_pm_read_verified() & ACPI_PM_MASK
;
31 static inline u32
acpi_pm_read_early(void)