ACPICA: Distill multiple sleep method functions to a single function

Adds acpi_hw_execute_sleep_method to handle the various sleep methods
such as _GTS, _BFS, _WAK, and _SST. Removes the specialized
functions previously used for each of these methods.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

3 files changed, 29 insertions, 128 deletions

diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index eed204acf0f9..d3f62a83f454 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -83,7 +83,7 @@ acpi_status acpi_hw_clear_acpi_status(void);
 /*
  * hwsleep - sleep/wake support
  */
-void acpi_hw_execute_SST(u32 value);
+void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument);
 
 acpi_status acpi_hw_extended_sleep(u8 sleep_state);
 
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index fa341471c231..abe65ff4231e 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -49,13 +49,6 @@
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwsleep")
 
-/* Local prototypes */
-static void acpi_hw_execute_GTS(u8 sleep_state);
-
-static void acpi_hw_execute_BFS(u8 sleep_state);
-
-static void acpi_hw_execute_WAK(u8 sleep_state);
-
 static unsigned int gts, bfs;
 module_param(gts, uint, 0644);
 module_param(bfs, uint, 0644);
@@ -64,137 +57,45 @@ MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".);
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_hw_execute_GTS
+ * FUNCTION:    acpi_hw_execute_sleep_method
  *
- * PARAMETERS:  sleep_state         - Sleep state that will be entered
+ * PARAMETERS:  method_name         - Pathname of method to execute
+ *              integer_argument    - Argument to pass to the method
  *
  * RETURN:      None
  *
- * DESCRIPTION: Execute the optional _GTS method (Going To Sleep)
+ * DESCRIPTION: Execute a sleep/wake related method, with one integer argument
+ *              and no return value.
  *
  ******************************************************************************/
-
-static void acpi_hw_execute_GTS(u8 sleep_state)
+void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument)
 {
         struct acpi_object_list arg_list;
         union acpi_object arg;
         acpi_status status;
 
-        if (!gts)
-                return;
+        ACPI_FUNCTION_TRACE(hw_execute_sleep_method);
 
-        /* One argument, sleep_state */
+        if (!ACPI_STRCMP(METHOD_NAME__GTS, method_name) && !gts)
+                return_VOID;
 
-        arg_list.count = 1;
-        arg_list.pointer = &arg;
-        arg.type = ACPI_TYPE_INTEGER;
-        arg.integer.value = sleep_state;
+        if (!ACPI_STRCMP(METHOD_NAME__BFS, method_name) && !bfs)
+                return_VOID;
 
-        status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
-        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-                ACPI_EXCEPTION((AE_INFO, status,
-                                "While executing method _GTS"));
-        }
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_hw_execute_BFS
- *
- * PARAMETERS:  sleep_state         - Which sleep state we just exited
- *
- * RETURN:      None
- *
- * DESCRIPTION: Execute the optional _BFS method (Back From Sleep)
- *
- ******************************************************************************/
-
-static void acpi_hw_execute_BFS(u8 sleep_state)
-{
-        struct acpi_object_list arg_list;
-        union acpi_object arg;
-        acpi_status status;
-
-        if (!bfs)
-                return;
-
-        /* One argument, sleep_state */
+        /* One argument, integer_argument */
 
         arg_list.count = 1;
         arg_list.pointer = &arg;
         arg.type = ACPI_TYPE_INTEGER;
-        arg.integer.value = sleep_state;
+        arg.integer.value = (u64)integer_argument;
 
-        status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
+        status = acpi_evaluate_object(NULL, method_name, &arg_list, NULL);
         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-                ACPI_EXCEPTION((AE_INFO, status,
-                                "While executing method _BFS"));
+                ACPI_EXCEPTION((AE_INFO, status, "While executing method %s",
+                                method_name));
         }
-}
 
-/*******************************************************************************
- *
- * FUNCTION:    acpi_hw_execute_WAK
- *
- * PARAMETERS:  sleep_state         - Which sleep state we just exited
- *
- * RETURN:      None
- *
- * DESCRIPTION: Execute the _WAK method (System Wake)
- *
- ******************************************************************************/
-
-static void acpi_hw_execute_WAK(u8 sleep_state)
-{
-        struct acpi_object_list arg_list;
-        union acpi_object arg;
-        acpi_status status;
-
-        /* One argument, sleep_state */
-
-        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__WAK, &arg_list, NULL);
-        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-                ACPI_EXCEPTION((AE_INFO, status,
-                                "While executing method _WAK"));
-        }
-        /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_hw_execute_SST
- *
- * PARAMETERS:  indicator_id        - Value to be passed to the _SST method
- *
- * RETURN:      None
- *
- * DESCRIPTION: Execute the optional _SST method (System Status)
- *
- ******************************************************************************/
-
-void acpi_hw_execute_SST(u32 indicator_id)
-{
-        struct acpi_object_list arg_list;
-        union acpi_object arg;
-        acpi_status status;
-
-        /* One argument, status indicator ID */
-
-        arg_list.count = 1;
-        arg_list.pointer = &arg;
-        arg.type = ACPI_TYPE_INTEGER;
-
-        arg.integer.value = indicator_id;
-        status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
-        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-                ACPI_EXCEPTION((AE_INFO, status,
-                                "While executing method _SST"));
-        }
+        return_VOID;
 }
 
 #if (!ACPI_REDUCED_HARDWARE)
@@ -271,7 +172,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
 
         /* Execute the _GTS method (Going To Sleep) */
 
-        acpi_hw_execute_GTS(sleep_state);
+        acpi_hw_execute_sleep_method(METHOD_NAME__GTS, sleep_state);
 
         /* Get current value of PM1A control */
 
@@ -427,7 +328,7 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
                 }
         }
 
-        acpi_hw_execute_BFS(sleep_state);
+        acpi_hw_execute_sleep_method(METHOD_NAME__BFS, sleep_state);
         return_ACPI_STATUS(status);
 }
 
@@ -453,7 +354,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
         /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
 
         acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
-        acpi_hw_execute_SST(ACPI_SST_WAKING);
+        acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WAKING);
 
         /*
          * GPEs must be enabled before _WAK is called as GPEs
@@ -477,7 +378,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
          * Now we can execute _WAK, etc. Some machines require that the GPEs
          * are enabled before the wake methods are executed.
          */
-        acpi_hw_execute_WAK(sleep_state);
+        acpi_hw_execute_sleep_method(METHOD_NAME__WAK, sleep_state);
 
         /*
          * Some BIOS code assumes that WAK_STS will be cleared on resume
@@ -509,7 +410,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
                 return_ACPI_STATUS(status);
         }
 
-        acpi_hw_execute_SST(ACPI_SST_WORKING);
+        acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WORKING);
         return_ACPI_STATUS(status);
 }
 
@@ -555,7 +456,7 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
 
         /* Execute the _GTS method (Going To Sleep) */
 
-        acpi_hw_execute_GTS(sleep_state);
+        acpi_hw_execute_sleep_method(METHOD_NAME__GTS, sleep_state);
 
         /* Flush caches, as per ACPI specification */
 
@@ -625,7 +526,7 @@ acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
                                  &acpi_gbl_FADT.sleep_control);
         }
 
-        acpi_hw_execute_BFS(sleep_state);
+        acpi_hw_execute_sleep_method(METHOD_NAME__BFS, sleep_state);
         return_ACPI_STATUS(AE_OK);
 }
 
@@ -652,8 +553,8 @@ acpi_status acpi_hw_extended_wake(u8 sleep_state)
 
         /* Execute the wake methods */
 
-        acpi_hw_execute_SST(ACPI_SST_WAKING);
-        acpi_hw_execute_WAK(sleep_state);
+        acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WAKING);
+        acpi_hw_execute_sleep_method(METHOD_NAME__WAK, sleep_state);
 
         /*
          * Some BIOS code assumes that WAK_STS will be cleared on resume
@@ -663,6 +564,6 @@ acpi_status acpi_hw_extended_wake(u8 sleep_state)
         (void)acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status);
         acpi_gbl_system_awake_and_running = TRUE;
 
-        acpi_hw_execute_SST(ACPI_SST_WORKING);
+        acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WORKING);
         return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index d599961e93c8..ff2055804809 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -261,7 +261,7 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
          * Set the system indicators to show the desired sleep state.
          * _SST is an optional method (return no error if not found)
          */
-        acpi_hw_execute_SST(sst_value);
+        acpi_hw_execute_sleep_method(METHOD_NAME__SST, sst_value);
         return_ACPI_STATUS(AE_OK);
 }