ACPI: Move module parameter gts and bfs to sleep.c

Move linux specific module parameter gts and bfs out of ACPICA core
code to sleep.c.

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

1 files changed, 31 insertions, 7 deletions

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 8f1fb4520d24..acf81fe86b53 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -17,6 +17,7 @@
 #include <linux/suspend.h>
 #include <linux/reboot.h>
 #include <linux/acpi.h>
+#include <linux/module.h>
 
 #include <asm/io.h>
 
@@ -26,6 +27,24 @@
 #include "internal.h"
 #include "sleep.h"
 
+static unsigned int gts, bfs;
+module_param(gts, uint, 0644);
+module_param(bfs, uint, 0644);
+MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend.");
+MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".);
+
+static u8 wake_sleep_flags(void)
+{
+        u8 flags = ACPI_NO_OPTIONAL_METHODS;
+
+        if (gts)
+                flags |= ACPI_EXECUTE_GTS;
+        if (bfs)
+                flags |= ACPI_EXECUTE_BFS;
+
+        return flags;
+}
+
 static u8 sleep_states[ACPI_S_STATE_COUNT];
 
 static void acpi_sleep_tts_switch(u32 acpi_state)
@@ -243,6 +262,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
 {
         acpi_status status = AE_OK;
         u32 acpi_state = acpi_target_sleep_state;
+        u8 flags = wake_sleep_flags();
         int error;
 
         ACPI_FLUSH_CPU_CACHE();
@@ -250,8 +270,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
         switch (acpi_state) {
         case ACPI_STATE_S1:
                 barrier();
-                status = acpi_enter_sleep_state(acpi_state,
-                                ACPI_NO_OPTIONAL_METHODS);
+                status = acpi_enter_sleep_state(acpi_state, flags);
                 break;
 
         case ACPI_STATE_S3:
@@ -266,7 +285,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
         acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
 
         /* Reprogram control registers and execute _BFS */
-        acpi_leave_sleep_state_prep(acpi_state, ACPI_NO_OPTIONAL_METHODS);
+        acpi_leave_sleep_state_prep(acpi_state, flags);
 
         /* ACPI 3.0 specs (P62) says that it's the responsibility
          * of the OSPM to clear the status bit [ implying that the
@@ -530,27 +549,30 @@ static int acpi_hibernation_begin(void)
 
 static int acpi_hibernation_enter(void)
 {
+        u8 flags = wake_sleep_flags();
         acpi_status status = AE_OK;
 
         ACPI_FLUSH_CPU_CACHE();
 
         /* This shouldn't return.  If it returns, we have a problem */
-        status = acpi_enter_sleep_state(ACPI_STATE_S4, ACPI_NO_OPTIONAL_METHODS);
+        status = acpi_enter_sleep_state(ACPI_STATE_S4, flags);
         /* Reprogram control registers and execute _BFS */
-        acpi_leave_sleep_state_prep(ACPI_STATE_S4, ACPI_NO_OPTIONAL_METHODS);
+        acpi_leave_sleep_state_prep(ACPI_STATE_S4, flags);
 
         return ACPI_SUCCESS(status) ? 0 : -EFAULT;
 }
 
 static void acpi_hibernation_leave(void)
 {
+        u8 flags = wake_sleep_flags();
+
         /*
          * If ACPI is not enabled by the BIOS and the boot kernel, we need to
          * enable it here.
          */
         acpi_enable();
         /* Reprogram control registers and execute _BFS */
-        acpi_leave_sleep_state_prep(ACPI_STATE_S4, ACPI_NO_OPTIONAL_METHODS);
+        acpi_leave_sleep_state_prep(ACPI_STATE_S4, flags);
         /* Check the hardware signature */
         if (facs && s4_hardware_signature != facs->hardware_signature) {
                 printk(KERN_EMERG "ACPI: Hardware changed while hibernated, "
@@ -771,10 +793,12 @@ static void acpi_power_off_prepare(void)
 
 static void acpi_power_off(void)
 {
+        u8 flags = wake_sleep_flags();
+
         /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
         printk(KERN_DEBUG "%s called\n", __func__);
         local_irq_disable();
-        acpi_enter_sleep_state(ACPI_STATE_S5, ACPI_NO_OPTIONAL_METHODS);
+        acpi_enter_sleep_state(ACPI_STATE_S5, flags);
 }
 
 /*