drm/tegra: sor: Trace register accesses

Add tracepoint events for SOR controller register accesses.
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/sor.c

@@ -26,6 +26,7 @@
 #include "dc.h"
 #include "drm.h"
 #include "sor.h"
+#include "trace.h"
 
 #define SOR_REKEY 0x38
 
@@ -234,12 +235,17 @@ static inline struct tegra_sor *to_sor(struct tegra_output *output)
 
 static inline u32 tegra_sor_readl(struct tegra_sor *sor, unsigned int offset)
 {
-	return readl(sor->regs + (offset << 2));
+	u32 value = readl(sor->regs + (offset << 2));
+
+	trace_sor_readl(sor->dev, offset, value);
+
+	return value;
 }
 
 static inline void tegra_sor_writel(struct tegra_sor *sor, u32 value,
 				    unsigned int offset)
 {
+	trace_sor_writel(sor->dev, offset, value);
 	writel(value, sor->regs + (offset << 2));
 }
 

drivers/gpu/drm/tegra/trace.h

@@ -52,6 +52,13 @@ DEFINE_EVENT(register_access, dpaux_readl,
 	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
 	TP_ARGS(dev, offset, value));
 
+DEFINE_EVENT(register_access, sor_writel,
+	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
+	TP_ARGS(dev, offset, value));
+DEFINE_EVENT(register_access, sor_readl,
+	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
+	TP_ARGS(dev, offset, value));
+
 #endif /* DRM_TEGRA_TRACE_H */
 
 /* This part must be outside protection */