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drm/i915/gvt: Fix dma-buf display blur issue on CFL

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Commit c3b5a8430d ("drm/i915/gvt: Enable gfx virtualiztion for CFL")
added the support on CFL. The vgpu emulation hotplug support on CFL was
supposed to be included in that patch. Without the vgpu emulation
hotplug support, the dma-buf based display gives us a blur face.

So fix this issue by adding the vgpu emulation hotplug support on CFL.

Fixes: c3b5a8430d ("drm/i915/gvt: Enable gfx virtualiztion for CFL")
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200227010041.32248-1-tina.zhang@intel.com
(cherry picked from commit 135dde8853)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Tina Zhang 2020-02-27 09:00:41 +08:00 committed by Jani Nikula
parent c951b0af2d
commit 259170cb4c
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/gvt/display.c
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@ -457,7 +457,8 @@ void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected)
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
/* TODO: add more platforms support */
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv) ||
IS_COFFEELAKE(dev_priv)) {
if (connected) {
vgpu_vreg_t(vgpu, SFUSE_STRAP) |=
SFUSE_STRAP_DDID_DETECTED;