drm/radeon/kms: get HPD info for connectors

This populates the connectors with HPD (Hot Plug Detect)
information.  This will be used in subsequent patches
for automatic digital monitor connect/disconnect handling.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 62c929e5b089..d4f4fb1c54c7 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -250,6 +250,16 @@ static const char *connector_names[13] = {
         "HDMI-B",
 };
 
+static const char *hpd_names[7] = {
+        "NONE",
+        "HPD1",
+        "HPD2",
+        "HPD3",
+        "HPD4",
+        "HPD5",
+        "HPD6",
+};
+
 static void radeon_print_display_setup(struct drm_device *dev)
 {
         struct drm_connector *connector;
@@ -264,6 +274,8 @@ static void radeon_print_display_setup(struct drm_device *dev)
                 radeon_connector = to_radeon_connector(connector);
                 DRM_INFO("Connector %d:\n", i);
                 DRM_INFO("  %s\n", connector_names[connector->connector_type]);
+                if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
+                        DRM_INFO("  %s\n", hpd_names[radeon_connector->hpd.hpd]);
                 if (radeon_connector->ddc_bus)
                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
                                  radeon_connector->ddc_bus->rec.mask_clk_reg,