[PATCH 10/50] drm/i915/guc: Reuse GuC suspend functionality in reset path

[Sagar Arun Kamble]

With this patch we reuse the complete sanitization done via
intel_uc_suspend called in new function intel_uc_reset_prepare.
Post reset this state is recreated by intel_uc_init_hw.

Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Michał Winiarski <michal.winiarski at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
 drivers/gpu/drm/i915/i915_gem.c | 2 ++
 drivers/gpu/drm/i915/intel_uc.c | 5 +++++
 drivers/gpu/drm/i915/intel_uc.h | 1 +
 3 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index dd56d45..76e1bb2 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2847,6 +2847,8 @@ int i915_gem_reset_prepare(struct drm_i915_private *dev_priv)
 
 	i915_gem_revoke_fences(dev_priv);
 
+	intel_uc_reset_prepare(dev_priv);
+
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 51876f9..a5b4f4d 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -470,3 +470,8 @@ int intel_uc_resume(struct drm_i915_private *dev_priv)
 {
 	return 0;
 }
+
+int intel_uc_reset_prepare(struct drm_i915_private *dev_priv)
+{
+	return intel_uc_suspend(dev_priv);
+}
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index c9f83f5..d0c2a27 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -69,5 +69,6 @@ static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
 int intel_uc_runtime_resume(struct drm_i915_private *dev_priv);
 int intel_uc_suspend(struct drm_i915_private *dev_priv);
 int intel_uc_resume(struct drm_i915_private *dev_priv);
+int intel_uc_reset_prepare(struct drm_i915_private *dev_priv);
 
 #endif
-- 
1.9.1