Commit d6b47b12 authored by Ben Guthro's avatar Ben Guthro Committed by Rafael J. Wysocki

ACPI / sleep: Introduce acpi_os_prepare_extended_sleep() for extended sleep path

Like acpi_os_prepare_sleep(), register a callback for use in systems
like tboot, and xen, which have system specific requirements outside
of ACPICA.  This mirrors the functionality in acpi_os_prepare_sleep(),
called from acpi_hw_sleep()
Signed-off-by: default avatarBen Guthro <benjamin.guthro@citrix.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 5ae90d8e
......@@ -43,6 +43,7 @@
*/
#include <acpi/acpi.h>
#include <linux/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_HARDWARE
......@@ -128,6 +129,14 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
ACPI_FLUSH_CPU_CACHE();
status = acpi_os_prepare_extended_sleep(sleep_state,
acpi_gbl_sleep_type_a,
acpi_gbl_sleep_type_b);
if (ACPI_SKIP(status))
return_ACPI_STATUS(AE_OK);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
/*
* Set the SLP_TYP and SLP_EN bits.
*
......
......@@ -79,6 +79,8 @@ extern char line_buf[80];
static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
u32 pm1b_ctrl);
static int (*__acpi_os_prepare_extended_sleep)(u8 sleep_state, u32 val_a,
u32 val_b);
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
......@@ -1779,6 +1781,28 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
__acpi_os_prepare_sleep = func;
}
acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, u32 val_a,
u32 val_b)
{
int rc = 0;
if (__acpi_os_prepare_extended_sleep)
rc = __acpi_os_prepare_extended_sleep(sleep_state,
val_a, val_b);
if (rc < 0)
return AE_ERROR;
else if (rc > 0)
return AE_CTRL_SKIP;
return AE_OK;
}
void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
u32 val_a, u32 val_b))
{
__acpi_os_prepare_extended_sleep = func;
}
void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
void (*func)(struct work_struct *work))
{
......
......@@ -481,6 +481,13 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
acpi_status acpi_os_prepare_sleep(u8 sleep_state,
u32 pm1a_control, u32 pm1b_control);
void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
u32 val_a, u32 val_b));
acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
u32 val_a, u32 val_b);
#ifdef CONFIG_X86
void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
#else
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment