Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
/* 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;
|
|
}
|
|
|
|
/**
|
|
* Register callback for suspend and resume event
|
|
*
|
|
* @cb Callback triggered on suspend and resume
|
|
* @data Data passed with the callback
|
|
*/
|
|
void acpi_pmtmr_register_suspend_resume_callback(void (*cb)(void *data, bool suspend), void *data);
|
|
|
|
/**
|
|
* Remove registered callback for suspend and resume event
|
|
*/
|
|
void acpi_pmtmr_unregister_suspend_resume_callback(void);
|
|
|
|
#else
|
|
|
|
static inline u32 acpi_pm_read_early(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|