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drm/i915: Preserve the DDI_A_4_LANES bit from the bios

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Otherwise the DDI_A_4_LANES bit gets lost and we can't use > 2 lanes
on eDP. This fixes eDP on hsw with > 2 lanes.

Also s/port_reversal/saved_port_bits/ since the current name is
confusing.

Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Stéphane Marchesin 2013-07-12 13:54:41 -07:00 • committed by Daniel Vetter
parent 21d8a4756a
commit bcf53de4e6
2 changed files with 7 additions and 5 deletions
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2
drivers/gpu/drm/i915/intel_drv.h
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@ -504,7 +504,7 @@ struct intel_dp {
struct intel_digital_port {
struct intel_encoder base;
enum port port;
u32 port_reversal;
u32 saved_port_bits;
struct intel_dp dp;
struct intel_hdmi hdmi;
};