ACPI: Separate invocations of _GTS and _BFS from _PTS and _WAK

[linux-2.6-omap-h63xx.git] / drivers / acpi / hardware / hwsleep.c

diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c
index 81b2484297037e4b4c4e86e9b82d431e50021f00..13c93a13785e3e56d415d1f363fa678ba8956adc 100644 (file)
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -192,18 +192,13 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
        arg.type = ACPI_TYPE_INTEGER;
        arg.integer.value = sleep_state;
 
-       /* Run the _PTS and _GTS methods */
+       /* Run the _PTS method */
 
        status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);
        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
                return_ACPI_STATUS(status);
        }
 
-       status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
-       if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-               return_ACPI_STATUS(status);
-       }
-
        /* Setup the argument to _SST */
 
        switch (sleep_state) {
@@ -262,6 +257,8 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
        struct acpi_bit_register_info *sleep_type_reg_info;
        struct acpi_bit_register_info *sleep_enable_reg_info;
        u32 in_value;
+       struct acpi_object_list arg_list;
+       union acpi_object arg;
        acpi_status status;
 
        ACPI_FUNCTION_TRACE(acpi_enter_sleep_state);
@@ -307,6 +304,18 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
                return_ACPI_STATUS(status);
        }
 
+       /* Execute the _GTS method */
+
+       arg_list.count = 1;
+       arg_list.pointer = &arg;
+       arg.type = ACPI_TYPE_INTEGER;
+       arg.integer.value = sleep_state;
+
+       status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
+       if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+               return_ACPI_STATUS(status);
+       }
+
        /* Get current value of PM1A control */
 
        status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
@@ -473,17 +482,18 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_leave_sleep_state
+ * FUNCTION:    acpi_leave_sleep_state_prep
  *
- * PARAMETERS:  sleep_state         - Which sleep state we just exited
+ * PARAMETERS:  sleep_state         - Which sleep state we are exiting
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
- *              Called with interrupts ENABLED.
+ * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
+ *              sleep.
+ *              Called with interrupts DISABLED.
  *
  ******************************************************************************/
-acpi_status acpi_leave_sleep_state(u8 sleep_state)
+acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
 {
        struct acpi_object_list arg_list;
        union acpi_object arg;
@@ -493,7 +503,7 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
        u32 PM1Acontrol;
        u32 PM1Bcontrol;
 
-       ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
+       ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep);
 
        /*
         * Set SLP_TYPE and SLP_EN to state S0.
@@ -540,6 +550,41 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
                }
        }
 
+       /* Execute the _BFS method */
+
+       arg_list.count = 1;
+       arg_list.pointer = &arg;
+       arg.type = ACPI_TYPE_INTEGER;
+       arg.integer.value = sleep_state;
+
+       status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
+       if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+               ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
+       }
+
+       return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_leave_sleep_state
+ *
+ * PARAMETERS:  sleep_state         - Which sleep state we just exited
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
+ *              Called with interrupts ENABLED.
+ *
+ ******************************************************************************/
+acpi_status acpi_leave_sleep_state(u8 sleep_state)
+{
+       struct acpi_object_list arg_list;
+       union acpi_object arg;
+       acpi_status status;
+
+       ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
+
        /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
 
        acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
@@ -558,12 +603,6 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
                ACPI_EXCEPTION((AE_INFO, status, "During Method _SST"));
        }
 
-       arg.integer.value = sleep_state;
-       status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
-       if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-               ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
-       }
-
        /*
         * GPEs must be enabled before _WAK is called as GPEs
         * might get fired there