From: Tina Zhang tina.zhang@intel.com
commit 259170cb4c84f4165a36c0b05811eb74c495412c upstream.
Commit c3b5a8430daad ("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: c3b5a8430daad ("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.zha... (cherry picked from commit 135dde8853c7e00f6002e710f7e4787ed8585c0e) Signed-off-by: Jani Nikula jani.nikula@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/i915/gvt/display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/gvt/display.c +++ b/drivers/gpu/drm/i915/gvt/display.c @@ -457,7 +457,8 @@ void intel_vgpu_emulate_hotplug(struct i 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;