1 files changed, 18 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 5a1bae3a2426..bd4959ca23aa 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -29,6 +29,14 @@
 #include "radeon.h"
 #include "atom.h"
 
+extern void
+radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
+                             struct drm_connector *drm_connector);
+extern void
+radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
+                           struct drm_connector *drm_connector);
+
+
 static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)
 {
         struct drm_device *dev = encoder->dev;
@@ -153,6 +161,7 @@ radeon_get_encoder_enum(struct drm_device *dev, uint32_t supported_device, uint8
 void
 radeon_link_encoder_connector(struct drm_device *dev)
 {
+        struct radeon_device *rdev = dev->dev_private;
         struct drm_connector *connector;
         struct radeon_connector *radeon_connector;
         struct drm_encoder *encoder;
@@ -163,8 +172,16 @@ radeon_link_encoder_connector(struct drm_device *dev)
                 radeon_connector = to_radeon_connector(connector);
                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
                         radeon_encoder = to_radeon_encoder(encoder);
-                        if (radeon_encoder->devices & radeon_connector->devices)
+                        if (radeon_encoder->devices & radeon_connector->devices) {
                                 drm_mode_connector_attach_encoder(connector, encoder);
+                                if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+                                        if (rdev->is_atom_bios)
+                                                radeon_atom_backlight_init(radeon_encoder, connector);
+                                        else
+                                                radeon_legacy_backlight_init(radeon_encoder, connector);
+                                        rdev->mode_info.bl_encoder = radeon_encoder;
+                                }
+                        }
                 }
         }
 }