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

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>
Cc: stable@vger.kernel.org

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index f5ba2241dacc..62cd512f5c8d 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -640,6 +640,14 @@ 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);