[PATCH] drm/i915/guc: Unify parameters of public CT functions

[Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>]

There is no need to mix parameter types in public CT functions
as we can always accept intel_guc_ct.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_guc_ct.c | 34 ++++++++++++++++++++++++----------
 drivers/gpu/drm/i915/intel_guc_ct.h |  6 ++----
 drivers/gpu/drm/i915/intel_uc.c     |  4 ++--
 3 files changed, 28 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c
index 0a0d3d5..7dd7de0 100644
--- a/drivers/gpu/drm/i915/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/intel_guc_ct.c
@@ -28,12 +28,21 @@
 
 enum { CTB_OWNER_HOST = 0 };
 
+/**
+ * intel_guc_ct_init_early - Initialize CT state without requiring device access
+ * @ct: pointer to CT struct
+ */
 void intel_guc_ct_init_early(struct intel_guc_ct *ct)
 {
 	/* we're using static channel owners */
 	ct->host_channel.owner = CTB_OWNER_HOST;
 }
 
+static inline struct intel_guc *ct_to_guc(struct intel_guc_ct *ct)
+{
+	return container_of(ct, struct intel_guc, ct);
+}
+
 static inline const char *guc_ct_buffer_type_to_str(u32 type)
 {
 	switch (type) {
@@ -416,16 +425,19 @@ static int intel_guc_send_ct(struct intel_guc *guc, const u32 *action, u32 len)
 }
 
 /**
- * Enable buffer based command transport
+ * intel_guc_ct_enable - Enable buffer based command transport.
+ * @ct: pointer to CT struct
+ *
  * Shall only be called for platforms with HAS_GUC_CT.
- * @guc:	the guc
- * return:	0 on success
- *		non-zero on failure
+ *
+ * Returns:
+ * 0 on success, a negative errno code on failure.
  */
-int intel_guc_enable_ct(struct intel_guc *guc)
+int intel_guc_ct_enable(struct intel_guc_ct *ct)
 {
+	struct intel_guc *guc = ct_to_guc(ct);
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
-	struct intel_guc_ct_channel *ctch = &guc->ct.host_channel;
+	struct intel_guc_ct_channel *ctch = &ct->host_channel;
 	int err;
 
 	GEM_BUG_ON(!HAS_GUC_CT(dev_priv));
@@ -441,14 +453,16 @@ int intel_guc_enable_ct(struct intel_guc *guc)
 }
 
 /**
- * Disable buffer based command transport.
+ * intel_guc_ct_disable - Disable buffer based command transport.
+ * @ct: pointer to CT struct
+ *
  * Shall only be called for platforms with HAS_GUC_CT.
- * @guc: the guc
  */
-void intel_guc_disable_ct(struct intel_guc *guc)
+void intel_guc_ct_disable(struct intel_guc_ct *ct)
 {
+	struct intel_guc *guc = ct_to_guc(ct);
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
-	struct intel_guc_ct_channel *ctch = &guc->ct.host_channel;
+	struct intel_guc_ct_channel *ctch = &ct->host_channel;
 
 	GEM_BUG_ON(!HAS_GUC_CT(dev_priv));
 
diff --git a/drivers/gpu/drm/i915/intel_guc_ct.h b/drivers/gpu/drm/i915/intel_guc_ct.h
index 6d97f36..595c8ad 100644
--- a/drivers/gpu/drm/i915/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/intel_guc_ct.h
@@ -78,9 +78,7 @@ struct intel_guc_ct {
 };
 
 void intel_guc_ct_init_early(struct intel_guc_ct *ct);
-
-/* XXX: move to intel_uc.h ? don't fit there either */
-int intel_guc_enable_ct(struct intel_guc *guc);
-void intel_guc_disable_ct(struct intel_guc *guc);
+int intel_guc_ct_enable(struct intel_guc_ct *ct);
+void intel_guc_ct_disable(struct intel_guc_ct *ct);
 
 #endif /* _INTEL_GUC_CT_H_ */
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 34e847d..a45c2ce 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -232,7 +232,7 @@ static int guc_enable_communication(struct intel_guc *guc)
 	gen9_enable_guc_interrupts(dev_priv);
 
 	if (HAS_GUC_CT(dev_priv))
-		return intel_guc_enable_ct(guc);
+		return intel_guc_ct_enable(&guc->ct);
 
 	guc->send = intel_guc_send_mmio;
 	return 0;
@@ -243,7 +243,7 @@ static void guc_disable_communication(struct intel_guc *guc)
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 
 	if (HAS_GUC_CT(dev_priv))
-		intel_guc_disable_ct(guc);
+		intel_guc_ct_disable(&guc->ct);
 
 	gen9_disable_guc_interrupts(dev_priv);
 
-- 
1.9.1

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