From: Damien Lespiau Date: Tue, 11 Dec 2012 18:48:29 +0000 (+0000) Subject: drm/i915: Preserve the FDI line reversal override bit on CPT X-Git-Tag: v3.9-rc1~83^2~11^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3e68320ef84528604d971afc3cadfbe208bef001;p=pandora-kernel.git drm/i915: Preserve the FDI line reversal override bit on CPT The FDI link has supported link reversal to make the PCB layout engineer's life easier for quite a while and we have always presered this bit as we programmed FDI_RX_CTL with a read/modify/write sequence. We're trying to take a bit more control over what the BIOS leaves in various register and with the introduction of DDI, started to program FDI_RX_CTL fully. There's a fused bit to indicate DMI link reversal and FDI defaults to mirroring that configuration. We have a bit to override that behaviour that we need to preserve from the BIOS. Signed-off-by: Damien Lespiau Reviewed-by: Rodrigo Vivi Reviewed-by: Paulo Zanoni Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed