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ACPICA: Add time macros for various timer/time manipulation.
Constants for time manipulation, including constants for the 100 nanosecond timers. Chao Guan, Bob Moore, Lv Zheng. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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4 changed files with 22 additions and 6 deletions
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@ -177,7 +177,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
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* to still read the right value. Ideally, this block would go
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* away entirely.
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*/
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acpi_os_stall(10000000);
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acpi_os_stall(10 * ACPI_USEC_PER_SEC);
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status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
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sleep_enable_reg_info->
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@ -176,10 +176,11 @@ acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed)
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/*
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* Compute Duration (Requires a 64-bit multiply and divide):
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*
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* time_elapsed = (delta_ticks * 1000000) / PM_TIMER_FREQUENCY;
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* time_elapsed (microseconds) =
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* (delta_ticks * ACPI_USEC_PER_SEC) / ACPI_PM_TIMER_FREQUENCY;
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*/
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status = acpi_ut_short_divide(((u64) delta_ticks) * 1000000,
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PM_TIMER_FREQUENCY, "ient, NULL);
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status = acpi_ut_short_divide(((u64)delta_ticks) * ACPI_USEC_PER_SEC,
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ACPI_PM_TIMER_FREQUENCY, "ient, NULL);
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*time_elapsed = (u32) quotient;
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return_ACPI_STATUS(status);
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@ -207,7 +207,7 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
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(u32)acpi_gbl_FADT.s4_bios_request, 8);
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do {
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acpi_os_stall(1000);
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acpi_os_stall(ACPI_USEC_PER_MSEC);
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status =
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acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
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if (ACPI_FAILURE(status)) {
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@ -341,7 +341,7 @@ typedef u32 acpi_physical_address;
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/* PM Timer ticks per second (HZ) */
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#define PM_TIMER_FREQUENCY 3579545
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#define ACPI_PM_TIMER_FREQUENCY 3579545
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/*******************************************************************************
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*
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@ -373,6 +373,21 @@ typedef u32 acpi_name; /* 4-byte ACPI name */
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typedef char *acpi_string; /* Null terminated ASCII string */
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typedef void *acpi_handle; /* Actually a ptr to a NS Node */
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/* Time constants for timer calculations */
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#define ACPI_MSEC_PER_SEC 1000L
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#define ACPI_USEC_PER_MSEC 1000L
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#define ACPI_USEC_PER_SEC 1000000L
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#define ACPI_100NSEC_PER_USEC 10L
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#define ACPI_100NSEC_PER_MSEC 10000L
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#define ACPI_100NSEC_PER_SEC 10000000L
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#define ACPI_NSEC_PER_USEC 1000L
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#define ACPI_NSEC_PER_MSEC 1000000L
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#define ACPI_NSEC_PER_SEC 1000000000L
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/* Owner IDs are used to track namespace nodes for selective deletion */
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typedef u8 acpi_owner_id;
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