[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.das at intel.com>
Signed-off-by: Oak Zeng <oak.zeng at intel.com>
Reviewed-by: Andi Shyti <andi.shyti at linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_pm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index 5a942af0a14e..ad43f455eac7 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -280,6 +280,7 @@ int intel_gt_resume(struct intel_gt *gt)
 out_fw:
 	intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL);
 	intel_gt_pm_put(gt);
+	intel_gt_bind_context_set_ready(gt, true);
 	return err;
 
 err_wedged:
@@ -306,6 +307,7 @@ static void wait_for_suspend(struct intel_gt *gt)
 
 void intel_gt_suspend_prepare(struct intel_gt *gt)
 {
+	intel_gt_bind_context_set_ready(gt, false);
 	user_forcewake(gt, true);
 	wait_for_suspend(gt);
 }
@@ -359,6 +361,7 @@ void intel_gt_suspend_late(struct intel_gt *gt)
 
 void intel_gt_runtime_suspend(struct intel_gt *gt)
 {
+	intel_gt_bind_context_set_ready(gt, false);
 	intel_uc_runtime_suspend(&gt->uc);
 
 	GT_TRACE(gt, "\n");
@@ -376,6 +379,7 @@ int intel_gt_runtime_resume(struct intel_gt *gt)
 	if (ret)
 		return ret;
 
+	intel_gt_bind_context_set_ready(gt, true);
 	return 0;
 }
 
-- 
2.41.0