Matt Roper 6c566dc9ac drm/i915/bxt: Force port A DDI to use 4 lanes ... The bspec indicates that DDI A using four lanes is the only valid configuration for Broxton (Broxton doesn't have a DDI E to split these lanes with); the DDI_A_4_LANES bit of port A's DDI_BUF_CTL should always be set by the BIOS. However some BIOS versions seem to only be setting this bit if eDP is actually lit up at boot time; if the BIOS doesn't turn on the eDP panel because an external display is plugged in, then this bit is never properly initialized. The end result of this is that we wind up calculating a lower max data rate than we should and may wind up rejecting the native mode for panels that we should be able to drive. Let's workaround this BIOS bug by just turning the DDI_A_4_LANES bit on in our driver's internal state if we recognize that we're running on BXT where it should have been on anyway. Cc: Imre Deak <imre.deak@intel.com> Cc: Bob Paauwe <bob.j.paauwe@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com> Tested-by: Bob Paauwe <bob.j.paauwe@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1446764012-27251-1-git-send-email-matthew.d.roper@intel.com		2015-11-09 10:33:02 -08:00
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drm	drm/i915/bxt: Force port A DDI to use 4 lanes	2015-11-09 10:33:02 -08:00
host1x	gpu: host1x: mipi: Power down regulators when unused	2015-08-13 13:47:21 +02:00
ipu-v3	gpu/drm: Kill off set_irq_flags usage	2015-09-16 16:53:38 +02:00
vga	vga_switcheroo: Set active attribute to false for audio clients	2015-09-24 20:14:25 +02:00
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