drm/radeon/kms: fix TRAVIS panel setup
Different versions of the DP to LVDS bridge chip need different panel mode settings depending on the chip version used. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=41569 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -564,9 +564,21 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
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ENCODER_OBJECT_ID_NUTMEG)
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panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
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else if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
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ENCODER_OBJECT_ID_TRAVIS)
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ENCODER_OBJECT_ID_TRAVIS) {
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u8 id[6];
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int i;
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for (i = 0; i < 6; i++)
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id[i] = radeon_read_dpcd_reg(radeon_connector, 0x503 + i);
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if (id[0] == 0x73 &&
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id[1] == 0x69 &&
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id[2] == 0x76 &&
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id[3] == 0x61 &&
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id[4] == 0x72 &&
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id[5] == 0x54)
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panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
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else
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panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
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else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
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} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
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u8 tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
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if (tmp & 1)
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panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
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