[Intel-gfx] [PATCH v5 2/2] drm/i915/gvt: Add GVT suspend/resume routine to i915

[Colin Xu]

This patch add gvt suspend/resume wrapper into i915: i915_drm_suspend()
and i915_drm_resume(). GVT relies on i915 so suspend gvt ahead of other
i915 sub-routine and resume gvt at last.

V2:
- Direct call into gvt suspend/resume wrapper in intel_gvt.h/intel_gvt.c.
The wrapper and implementation will check and call gvt routine. (zhenyu)

V3:
Refresh.

V4:
Rebase.

V5:
Fail intel_gvt_suspend() if fail to save GGTT.

Signed-off-by: Hang Yuan <hang.yuan at linux.intel.com>
Signed-off-by: Colin Xu <colin.xu at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 8bb7e2dcfaaa..b3203292b0ee 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1104,6 +1104,9 @@ static int i915_drm_suspend(struct drm_device *dev)
 
 	drm_kms_helper_poll_disable(dev);
 
+	if (intel_gvt_suspend(dev_priv))
+		drm_err(&dev_priv->drm, "failed to suspend GVT\n");
+
 	pci_save_state(pdev);
 
 	intel_display_suspend(dev);
@@ -1281,6 +1284,8 @@ static int i915_drm_resume(struct drm_device *dev)
 
 	intel_power_domains_enable(dev_priv);
 
+	intel_gvt_resume(dev_priv);
+
 	enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
 
 	return 0;
-- 
2.28.0