From: Thierry Reding <treding@xxxxxxxxxx>
Add tracepoint events for DPAUX controller register accesses.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpu/drm/tegra/dpaux.c | 8 +++++++-
drivers/gpu/drm/tegra/trace.h | 7 +++++++
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
index 793cb4ad99c4..d476ab5006bb 100644
--- a/drivers/gpu/drm/tegra/dpaux.c
+++ b/drivers/gpu/drm/tegra/dpaux.c
@@ -25,6 +25,7 @@
#include "dpaux.h"
#include "drm.h"
+#include "trace.h"
static DEFINE_MUTEX(dpaux_lock);
static LIST_HEAD(dpaux_list);
@@ -67,12 +68,17 @@ static inline struct tegra_dpaux *work_to_dpaux(struct work_struct *work)
static inline u32 tegra_dpaux_readl(struct tegra_dpaux *dpaux,
unsigned int offset)
{
- return readl(dpaux->regs + (offset << 2));
+ u32 value = readl(dpaux->regs + (offset << 2));
+
+ trace_dpaux_readl(dpaux->dev, offset, value);
+
+ return value;
}
static inline void tegra_dpaux_writel(struct tegra_dpaux *dpaux,
u32 value, unsigned int offset)
{
+ trace_dpaux_writel(dpaux->dev, offset, value);
writel(value, dpaux->regs + (offset << 2));
}
diff --git a/drivers/gpu/drm/tegra/trace.h b/drivers/gpu/drm/tegra/trace.h
index dd0176ff81eb..e497a0258ee4 100644
--- a/drivers/gpu/drm/tegra/trace.h
+++ b/drivers/gpu/drm/tegra/trace.h
@@ -45,6 +45,13 @@ DEFINE_EVENT(register_access, dsi_readl,
TP_PROTO(struct device *dev, unsigned int offset, u32 value),
TP_ARGS(dev, offset, value));
+DEFINE_EVENT(register_access, dpaux_writel,
+ TP_PROTO(struct device *dev, unsigned int offset, u32 value),
+ TP_ARGS(dev, offset, value));
+DEFINE_EVENT(register_access, dpaux_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 */
--
2.13.3
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