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drm/i915: We implement WaEnableVGAAccessThroughIOPort:ctg, elk, ilk, snb, ivb, vlv, hsw

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Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-01-22 21:32:38 +02:00 committed by Daniel Vetter
parent c5c32cda59
commit 2b37c6160e
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/i915/intel_display.c
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@ -10985,6 +10985,7 @@ static void i915_disable_vga(struct drm_device *dev)
u8 sr1;
u32 vga_reg = i915_vgacntrl_reg(dev);
/* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
outb(SR01, VGA_SR_INDEX);
sr1 = inb(VGA_SR_DATA);