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>

drivers/acpi/acpica/hwsleep.c

@@ -177,7 +177,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
 		 * to still read the right value. Ideally, this block would go
 		 * away entirely.
 		 */
-		acpi_os_stall(10000000);
+		acpi_os_stall(10 * ACPI_USEC_PER_SEC);
 
 		status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
 						sleep_enable_reg_info->

drivers/acpi/acpica/hwtimer.c

@@ -176,10 +176,11 @@ acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed)
 	/*
 	 * Compute Duration (Requires a 64-bit multiply and divide):
 	 *
-	 * time_elapsed = (delta_ticks * 1000000) / PM_TIMER_FREQUENCY;
+	 * time_elapsed (microseconds) =
+	 *  (delta_ticks * ACPI_USEC_PER_SEC) / ACPI_PM_TIMER_FREQUENCY;
 	 */
-	status = acpi_ut_short_divide(((u64) delta_ticks) * 1000000,
-				      PM_TIMER_FREQUENCY, &quotient, NULL);
+	status = acpi_ut_short_divide(((u64)delta_ticks) * ACPI_USEC_PER_SEC,
+				      ACPI_PM_TIMER_FREQUENCY, &quotient, NULL);
 
 	*time_elapsed = (u32) quotient;
 	return_ACPI_STATUS(status);

drivers/acpi/acpica/hwxfsleep.c

@@ -207,7 +207,7 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
 				    (u32)acpi_gbl_FADT.s4_bios_request, 8);
 
 	do {
-		acpi_os_stall(1000);
+		acpi_os_stall(ACPI_USEC_PER_MSEC);
 		status =
 		    acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
 		if (ACPI_FAILURE(status)) {