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drm/tegra: dpaux: Trace register accesses 

Add tracepoint events for DPAUX controller register accesses.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2017-08-15 15:41:13 +02:00
parent 75af8fa7fd
commit eba7c4551a
2 changed files with 14 additions and 1 deletions
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8
drivers/gpu/drm/tegra/dpaux.c
View File

@ -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));
}

7
drivers/gpu/drm/tegra/trace.h
View File

@ -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 */