[Intel-gfx] [PATCH 6/7] drm/i915: Toggle binder context ready status

[Nirmoy Das]

Toggle binder context ready status when needed.

To issue gpu commands, the driver must be primed to receive
requests. Maintain binder-based GGTT update disablement until driver
probing completes. Moreover, implement a temporary disablement
of blitter prior to entering suspend, followed by re-enablement
post-resume. This is acceptable as those transition periods are
mostly single threaded.

Signed-off-by: Nirmoy Das <nirmoy....@intel.com>
Signed-off-by: Oak Zeng <oak.z...@intel.com>
---
 drivers/gpu/drm/i915/i915_driver.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_driver.c 
b/drivers/gpu/drm/i915/i915_driver.c
index e5d693904123..07e95e9ab504 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -817,6 +817,7 @@ int i915_driver_probe(struct pci_dev *pdev, const struct 
pci_device_id *ent)
        i915_welcome_messages(i915);
 
        i915->do_release = true;
+       intel_gt_bind_context_set_ready(to_gt(i915), true);
 
        return 0;
 
@@ -857,6 +858,7 @@ void i915_driver_remove(struct drm_i915_private *i915)
 {
        intel_wakeref_t wakeref;
 
+       intel_gt_bind_context_set_ready(to_gt(i915), false);
        wakeref = intel_runtime_pm_get(&i915->runtime_pm);
 
        i915_driver_unregister(i915);
@@ -1079,6 +1081,8 @@ static int i915_drm_suspend(struct drm_device *dev)
        struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
        pci_power_t opregion_target_state;
 
+       intel_gt_bind_context_set_ready(to_gt(dev_priv), false);
+
        disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
 
        /* We do a lot of poking in a lot of registers, make sure they work
@@ -1266,6 +1270,7 @@ static int i915_drm_resume(struct drm_device *dev)
        intel_gvt_resume(dev_priv);
 
        enable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
+       intel_gt_bind_context_set_ready(to_gt(dev_priv), true);
 
        return 0;
 }
-- 
2.41.0