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authorBen Guthro <benjamin.guthro@citrix.com>2013-07-30 16:24:52 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-31 16:20:39 +0400
commitd6b47b122473885abc882e337ac2d321bbcfb378 (patch)
tree878258457b8e9dbeaf1dbd5c0d57b508f96d02d8 /drivers/acpi/osl.c
parent5ae90d8e467e625e447000cb4335c4db973b1095 (diff)
downloadlinux-d6b47b122473885abc882e337ac2d321bbcfb378.tar.xz
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/acpi/osl.c')
-rw-r--r--drivers/acpi/osl.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 6ab2c3505520..a934950ff7a0 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))
{