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drm/tegra: hdmi: Trace register accesses

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Add tracepoint events for HDMI controller register accesses.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2017-08-15 15:41:11 +02:00
parent 67e04d1ab1
commit 07a8aab899
2 changed files with 14 additions and 1 deletions
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8
drivers/gpu/drm/tegra/hdmi.c
View file

@ -24,6 +24,7 @@
#include "hdmi.h"
#include "drm.h"
#include "dc.h"
#include "trace.h"
#define HDMI_ELD_BUFFER_SIZE 96
@ -102,12 +103,17 @@ enum {
static inline u32 tegra_hdmi_readl(struct tegra_hdmi *hdmi,
unsigned int offset)
{
return readl(hdmi->regs + (offset << 2));
u32 value = readl(hdmi->regs + (offset << 2));
trace_hdmi_readl(hdmi->dev, offset, value);
return value;
}
static inline void tegra_hdmi_writel(struct tegra_hdmi *hdmi, u32 value,
unsigned int offset)
{
trace_hdmi_writel(hdmi->dev, offset, value);
writel(value, hdmi->regs + (offset << 2));
}

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

@ -31,6 +31,13 @@ DEFINE_EVENT(register_access, dc_readl,
TP_PROTO(struct device *dev, unsigned int offset, u32 value),
TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, hdmi_writel,
TP_PROTO(struct device *dev, unsigned int offset, u32 value),
TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, hdmi_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 */