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authorBen Guthro <benjamin.guthro@citrix.com>2013-07-30 08:24:52 -0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-31 14:20:39 +0200
commitd6b47b122473885abc882e337ac2d321bbcfb378 (patch)
tree878258457b8e9dbeaf1dbd5c0d57b508f96d02d8 /drivers
parent5ae90d8e467e625e447000cb4335c4db973b1095 (diff)
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: Ben Guthro <benjamin.guthro@citrix.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/acpica/hwesleep.c9
-rw-r--r--drivers/acpi/osl.c24
2 files changed, 33 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c
index 5e5f76230f5..414076818d4 100644
--- a/drivers/acpi/acpica/hwesleep.c
+++ b/drivers/acpi/acpica/hwesleep.c
@@ -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.
*
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 6ab2c350552..a934950ff7a 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -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))
{