drm/radeon: re-organize the acpi notifier callback

Move it out of the radeon_pm.c and into radeon_acpi.c since
we use it for more than just pm now.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon.h

@@ -1869,12 +1869,14 @@ extern void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_displ
 extern int ni_init_microcode(struct radeon_device *rdev);
 extern int ni_mc_load_microcode(struct radeon_device *rdev);
 
-/* radeon_acpi.c */ 
-#if defined(CONFIG_ACPI) 
-extern int radeon_acpi_init(struct radeon_device *rdev); 
-#else 
-static inline int radeon_acpi_init(struct radeon_device *rdev) { return 0; } 
-#endif 
+/* radeon_acpi.c */
+#if defined(CONFIG_ACPI)
+extern int radeon_acpi_init(struct radeon_device *rdev);
+extern void radeon_acpi_fini(struct radeon_device *rdev);
+#else
+static inline int radeon_acpi_init(struct radeon_device *rdev) { return 0; }
+static inline void radeon_acpi_fini(struct radeon_device *rdev) { }
+#endif
 
 #include "radeon_object.h"
 

drivers/gpu/drm/radeon/radeon_acpi.c

@@ -24,6 +24,7 @@
 #include <linux/pci.h>
 #include <linux/acpi.h>
 #include <linux/slab.h>
+#include <linux/power_supply.h>
 #include <acpi/acpi_drivers.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/video.h>
@@ -38,6 +39,10 @@
 
 #include <linux/vga_switcheroo.h>
 
+#define ACPI_AC_CLASS           "ac_adapter"
+
+extern void radeon_pm_acpi_event_handler(struct radeon_device *rdev);
+
 struct atif_verify_interface {
 	u16 size;		/* structure size in bytes (includes size field) */
 	u16 version;		/* version */
@@ -299,6 +304,26 @@ int radeon_atif_handler(struct radeon_device *rdev,
 	return NOTIFY_OK;
 }
 
+static int radeon_acpi_event(struct notifier_block *nb,
+			     unsigned long val,
+			     void *data)
+{
+	struct radeon_device *rdev = container_of(nb, struct radeon_device, acpi_nb);
+	struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
+
+	if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) {
+		if (power_supply_is_system_supplied() > 0)
+			DRM_DEBUG_DRIVER("pm: AC\n");
+		else
+			DRM_DEBUG_DRIVER("pm: DC\n");
+
+		radeon_pm_acpi_event_handler(rdev);
+	}
+
+	/* Check for pending SBIOS requests */
+	return radeon_atif_handler(rdev, entry);
+}
+
 /* Call all ACPI methods here */
 int radeon_acpi_init(struct radeon_device *rdev)
 {
@@ -367,6 +392,13 @@ int radeon_acpi_init(struct radeon_device *rdev)
 	}
 
 out:
+	rdev->acpi_nb.notifier_call = radeon_acpi_event;
+	register_acpi_notifier(&rdev->acpi_nb);
+
 	return ret;
 }
 
+void radeon_acpi_fini(struct radeon_device *rdev)
+{
+	unregister_acpi_notifier(&rdev->acpi_nb);
+}

drivers/gpu/drm/radeon/radeon_kms.c

@@ -51,6 +51,7 @@ int radeon_driver_unload_kms(struct drm_device *dev)
 
 	if (rdev == NULL)
 		return 0;
+	radeon_acpi_fini(rdev);
 	radeon_modeset_fini(rdev);
 	radeon_device_fini(rdev);
 	kfree(rdev);

drivers/gpu/drm/radeon/radeon_pm.c

@@ -22,12 +22,8 @@
  */
 #include "drmP.h"
 #include "radeon.h"
-#include "radeon_acpi.h"
 #include "avivod.h"
 #include "atom.h"
-#ifdef CONFIG_ACPI
-#include <linux/acpi.h>
-#endif
 #include <linux/power_supply.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
@@ -51,8 +47,6 @@ static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish
 static void radeon_pm_update_profile(struct radeon_device *rdev);
 static void radeon_pm_set_clocks(struct radeon_device *rdev);
 
-#define ACPI_AC_CLASS           "ac_adapter"
-
 int radeon_pm_get_type_index(struct radeon_device *rdev,
 			     enum radeon_pm_state_type ps_type,
 			     int instance)
@@ -71,34 +65,17 @@ int radeon_pm_get_type_index(struct radeon_device *rdev,
 	return rdev->pm.default_power_state_index;
 }
 
-#ifdef CONFIG_ACPI
-static int radeon_acpi_event(struct notifier_block *nb,
-			     unsigned long val,
-			     void *data)
+void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
 {
-	struct radeon_device *rdev = container_of(nb, struct radeon_device, acpi_nb);
-	struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
-
-	if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) {
-		if (power_supply_is_system_supplied() > 0)
-			DRM_DEBUG_DRIVER("pm: AC\n");
-		else
-			DRM_DEBUG_DRIVER("pm: DC\n");
-
-		if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
-			if (rdev->pm.profile == PM_PROFILE_AUTO) {
-				mutex_lock(&rdev->pm.mutex);
-				radeon_pm_update_profile(rdev);
-				radeon_pm_set_clocks(rdev);
-				mutex_unlock(&rdev->pm.mutex);
-			}
+	if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
+		if (rdev->pm.profile == PM_PROFILE_AUTO) {
+			mutex_lock(&rdev->pm.mutex);
+			radeon_pm_update_profile(rdev);
+			radeon_pm_set_clocks(rdev);
+			mutex_unlock(&rdev->pm.mutex);
 		}
 	}
-
-	/* Check for pending SBIOS requests */
-	return radeon_atif_handler(rdev, entry);
 }
-#endif
 
 static void radeon_pm_update_profile(struct radeon_device *rdev)
 {
@@ -629,10 +606,6 @@ int radeon_pm_init(struct radeon_device *rdev)
 		if (ret)
 			DRM_ERROR("failed to create device file for power method\n");
 
-#ifdef CONFIG_ACPI
-		rdev->acpi_nb.notifier_call = radeon_acpi_event;
-		register_acpi_notifier(&rdev->acpi_nb);
-#endif
 		if (radeon_debugfs_pm_init(rdev)) {
 			DRM_ERROR("Failed to register debugfs file for PM!\n");
 		}
@@ -663,9 +636,6 @@ void radeon_pm_fini(struct radeon_device *rdev)
 
 		device_remove_file(rdev->dev, &dev_attr_power_profile);
 		device_remove_file(rdev->dev, &dev_attr_power_method);
-#ifdef CONFIG_ACPI
-		unregister_acpi_notifier(&rdev->acpi_nb);
-#endif
 	}
 
 	if (rdev->pm.power_state)