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path: root/drivers/acpi/acpica/hwxfsleep.c
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Diffstat (limited to 'drivers/acpi/acpica/hwxfsleep.c')
-rw-r--r--drivers/acpi/acpica/hwxfsleep.c57
1 files changed, 29 insertions, 28 deletions
diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index 762d059bb50..6921c7f3d20 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -5,7 +5,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2012, Intel Corp.
+ * Copyright (C) 2000 - 2014, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -41,16 +41,16 @@
* POSSIBILITY OF SUCH DAMAGES.
*/
+#define EXPORT_ACPI_INTERFACES
+
#include <acpi/acpi.h>
#include "accommon.h"
-#include <linux/module.h>
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwxfsleep")
/* Local prototypes */
-static acpi_status
-acpi_hw_sleep_dispatch(u8 sleep_state, u8 flags, u32 function_id);
+static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id);
/*
* Dispatch table used to efficiently branch to the various sleep
@@ -167,7 +167,7 @@ ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector64)
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
*
******************************************************************************/
-acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
+acpi_status acpi_enter_sleep_state_s4bios(void)
{
u32 in_value;
acpi_status status;
@@ -205,10 +205,10 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
ACPI_FLUSH_CPU_CACHE();
status = acpi_hw_write_port(acpi_gbl_FADT.smi_command,
- (u32)acpi_gbl_FADT.S4bios_request, 8);
+ (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)) {
@@ -234,25 +234,26 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios)
* function.
*
******************************************************************************/
-static acpi_status
-acpi_hw_sleep_dispatch(u8 sleep_state, u8 flags, u32 function_id)
+static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id)
{
acpi_status status;
struct acpi_sleep_functions *sleep_functions =
&acpi_sleep_dispatch[function_id];
#if (!ACPI_REDUCED_HARDWARE)
-
/*
* If the Hardware Reduced flag is set (from the FADT), we must
- * use the extended sleep registers
+ * use the extended sleep registers (FADT). Note: As per the ACPI
+ * specification, these extended registers are to be used for HW-reduced
+ * platforms only. They are not general-purpose replacements for the
+ * legacy PM register sleep support.
*/
- if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) {
- status = sleep_functions->extended_function(sleep_state, flags);
+ if (acpi_gbl_reduced_hardware) {
+ status = sleep_functions->extended_function(sleep_state);
} else {
/* Legacy sleep */
- status = sleep_functions->legacy_function(sleep_state, flags);
+ status = sleep_functions->legacy_function(sleep_state);
}
return (status);
@@ -262,7 +263,7 @@ acpi_hw_sleep_dispatch(u8 sleep_state, u8 flags, u32 function_id)
* For the case where reduced-hardware-only code is being generated,
* we know that only the extended sleep registers are available
*/
- status = sleep_functions->extended_function(sleep_state, flags);
+ status = sleep_functions->extended_function(sleep_state);
return (status);
#endif /* !ACPI_REDUCED_HARDWARE */
@@ -316,20 +317,24 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
switch (sleep_state) {
case ACPI_STATE_S0:
+
sst_value = ACPI_SST_WORKING;
break;
case ACPI_STATE_S1:
case ACPI_STATE_S2:
case ACPI_STATE_S3:
+
sst_value = ACPI_SST_SLEEPING;
break;
case ACPI_STATE_S4:
+
sst_value = ACPI_SST_SLEEP_CONTEXT;
break;
default:
+
sst_value = ACPI_SST_INDICATOR_OFF; /* Default is off */
break;
}
@@ -349,15 +354,14 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
* FUNCTION: acpi_enter_sleep_state
*
* PARAMETERS: sleep_state - Which sleep state to enter
- * Flags - ACPI_EXECUTE_GTS to run optional method
*
* RETURN: Status
*
- * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
+ * DESCRIPTION: Enter a system sleep state
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
*
******************************************************************************/
-acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state, u8 flags)
+acpi_status acpi_enter_sleep_state(u8 sleep_state)
{
acpi_status status;
@@ -370,8 +374,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state, u8 flags)
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
- status =
- acpi_hw_sleep_dispatch(sleep_state, flags, ACPI_SLEEP_FUNCTION_ID);
+ status = acpi_hw_sleep_dispatch(sleep_state, ACPI_SLEEP_FUNCTION_ID);
return_ACPI_STATUS(status);
}
@@ -382,24 +385,23 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state)
* FUNCTION: acpi_leave_sleep_state_prep
*
* PARAMETERS: sleep_state - Which sleep state we are exiting
- * Flags - ACPI_EXECUTE_BFS to run optional method
*
* RETURN: Status
*
* DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
- * sleep.
- * Called with interrupts DISABLED.
+ * sleep. Called with interrupts DISABLED.
+ * We break wake/resume into 2 stages so that OSPM can handle
+ * various OS-specific tasks between the two steps.
*
******************************************************************************/
-acpi_status acpi_leave_sleep_state_prep(u8 sleep_state, u8 flags)
+acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep);
status =
- acpi_hw_sleep_dispatch(sleep_state, flags,
- ACPI_WAKE_PREP_FUNCTION_ID);
+ acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_PREP_FUNCTION_ID);
return_ACPI_STATUS(status);
}
@@ -423,8 +425,7 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
-
- status = acpi_hw_sleep_dispatch(sleep_state, 0, ACPI_WAKE_FUNCTION_ID);
+ status = acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_FUNCTION_ID);
return_ACPI_STATUS(status);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 15:20:53 +0000