drm/i915: Toggle binder context ready status

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.

v2: move changes to lower levels from i915_driver.c(Jani).
    use new function for setting context ready status.

Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Oak Zeng <oak.zeng@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926083742.14740-7-nirmoy.das@intel.com

Author: nirmoy

drivers/gpu/drm/i915/gt/intel_gt_pm.c

@@ -296,6 +296,7 @@ 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);
 	return err;
 
 err_wedged:
@@ -322,6 +323,7 @@ static void wait_for_suspend(struct intel_gt *gt)
 
 void intel_gt_suspend_prepare(struct intel_gt *gt)
 {
+	intel_gt_bind_context_set_unready(gt);
 	user_forcewake(gt, true);
 	wait_for_suspend(gt);
 }
@@ -375,6 +377,7 @@ void intel_gt_suspend_late(struct intel_gt *gt)
 
 void intel_gt_runtime_suspend(struct intel_gt *gt)
 {
+	intel_gt_bind_context_set_unready(gt);
 	intel_uc_runtime_suspend(&gt->uc);
 
 	GT_TRACE(gt, "\n");
@@ -392,6 +395,7 @@ int intel_gt_runtime_resume(struct intel_gt *gt)
 	if (ret)
 		return ret;
 
+	intel_gt_bind_context_set_ready(gt);
 	return 0;
 }