diff options
| author | Hang Yuan <hang.yuan@linux.intel.com> | 2019-01-30 18:25:53 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2019-01-31 11:26:55 +0800 |
| commit | 1ca20f33df42ee61a4ae1bf4f2abf8e5f77a16fc (patch) | |
| tree | 779839896d882279778697ccefdbe09469800f3d /drivers/gpu/drm/i915/gvt/display.c | |
| parent | 49220789617bdc439c95146eb94529c0fcf01043 (diff) | |
drm/i915/gvt: add hotplug emulation
Add function to emulate hotplug interrupt for SKL/KBL platforms
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/display.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/display.c b/drivers/gpu/drm/i915/gvt/display.c index 6a86faccbe3f..035479e273be 100644 --- a/drivers/gpu/drm/i915/gvt/display.c +++ b/drivers/gpu/drm/i915/gvt/display.c @@ -446,6 +446,36 @@ void intel_gvt_emulate_vblank(struct intel_gvt *gvt) } /** + * intel_vgpu_emulate_hotplug - trigger hotplug event for vGPU + * @vgpu: a vGPU + * @conncted: link state + * + * This function is used to trigger hotplug interrupt for vGPU + * + */ +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 (connected) { + vgpu_vreg_t(vgpu, SFUSE_STRAP) |= + SFUSE_STRAP_DDID_DETECTED; + vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT; + } else { + vgpu_vreg_t(vgpu, SFUSE_STRAP) &= + ~SFUSE_STRAP_DDID_DETECTED; + vgpu_vreg_t(vgpu, SDEISR) &= ~SDE_PORTD_HOTPLUG_CPT; + } + vgpu_vreg_t(vgpu, SDEIIR) |= SDE_PORTD_HOTPLUG_CPT; + vgpu_vreg_t(vgpu, PCH_PORT_HOTPLUG) |= + PORTD_HOTPLUG_STATUS_MASK; + intel_vgpu_trigger_virtual_event(vgpu, DP_D_HOTPLUG); + } +} + +/** * intel_vgpu_clean_display - clean vGPU virtual display emulation * @vgpu: a vGPU * |