radeon/kms: force rn50 chip to always report connected on analog output

commit 51861d4eebc2ddc25c77084343d060fa79f6e291 upstream.

Those rn50 chip are often connected to console remoting hw and load
detection often fails with those. Just don't try to load detect and
report connect.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 8165953..a906803 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -617,6 +617,14 @@ static enum drm_connector_status radeon_legacy_primary_dac_detect(struct drm_enc
        enum drm_connector_status found = connector_status_disconnected;
        bool color = true;
 
+       /* just don't bother on RN50 those chip are often connected to remoting
+        * console hw and often we get failure to load detect those. So to make
+        * everyone happy report the encoder as always connected.
+        */
+       if (ASIC_IS_RN50(rdev)) {
+               return connector_status_connected;
+       }
+
        /* save the regs we need */
        vclk_ecp_cntl = RREG32_PLL(RADEON_VCLK_ECP_CNTL);
        crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL);