1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c
index 9fc22ee40f96..e32fd2cbc368 100644
--- a/drivers/gpu/drm/radeon/evergreen_hdmi.c
+++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c
@@ -219,3 +219,20 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
         WREG32(AFMT_RAMP_CONTROL2 + offset, 0x00000001);
         WREG32(AFMT_RAMP_CONTROL3 + offset, 0x00000001);
 }
+
+void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
+{
+        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+        struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+
+        /* Silent, r600_hdmi_enable will raise WARN for us */
+        if (enable && dig->afmt->enabled)
+                return;
+        if (!enable && !dig->afmt->enabled)
+                return;
+
+        dig->afmt->enabled = enable;
+
+        DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
+                  enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
+}