drm/tegra: dpaux: Trace register accesses
Add tracepoint events for DPAUX controller register accesses.
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
index 83f1406..e4da041 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));
}