Commit 135dde88 authored Feb 27, 2020 by Tina Zhang Committed by Zhenyu Wang Mar 06, 2020

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

Commit c3b5a843 ("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: c3b5a843 ("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

parent a8bb49b6

drivers/gpu/drm/i915/gvt/display.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -459,7 +459,8 @@ 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;