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Commit 67e04d1a authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: dc: Trace register accesses 



Add tracepoint events for display controller register accesses.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 5c5f1301

drivers/gpu/drm/tegra/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -17,4 +17,6 @@ tegra-drm-y := \ 
	falcon.o \

	vic.o



tegra-drm-y += trace.o



obj-$(CONFIG_DRM_TEGRA) += tegra-drm.o

drivers/gpu/drm/tegra/drm.h

+7 −1
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <drm/drm_fixed.h>



#include "gem.h"

#include "trace.h"



struct reset_control;
@@ -174,12 +175,17 @@ static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc) 
static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,

				   unsigned int offset)

{

	trace_dc_writel(dc->dev, offset, value);

	writel(value, dc->regs + (offset << 2));

}



static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned int offset)

{

	return readl(dc->regs + (offset << 2));

	u32 value = readl(dc->regs + (offset << 2));



	trace_dc_readl(dc->dev, offset, value);



	return value;

}



struct tegra_dc_window {

drivers/gpu/drm/tegra/trace.c

0 → 100644
+2 −0
Original line number Diff line number Diff line 
#define CREATE_TRACE_POINTS

#include "trace.h"

drivers/gpu/drm/tegra/trace.h

0 → 100644
+40 −0
Original line number Diff line number Diff line 
#undef TRACE_SYSTEM

#define TRACE_SYSTEM tegra



#if !defined(DRM_TEGRA_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)

#define DRM_TEGRA_TRACE_H 1



#include <linux/device.h>

#include <linux/tracepoint.h>



DECLARE_EVENT_CLASS(register_access,

	TP_PROTO(struct device *dev, unsigned int offset, u32 value),

	TP_ARGS(dev, offset, value),

	TP_STRUCT__entry(

		__field(struct device *, dev)

		__field(unsigned int, offset)

		__field(u32, value)

	),

	TP_fast_assign(

		__entry->dev = dev;

		__entry->offset = offset;

		__entry->value = value;

	),

	TP_printk("%s %04x %08x", dev_name(__entry->dev), __entry->offset,

		  __entry->value)

);



DEFINE_EVENT(register_access, dc_writel,

	TP_PROTO(struct device *dev, unsigned int offset, u32 value),

	TP_ARGS(dev, offset, value));

DEFINE_EVENT(register_access, dc_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 */

#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH .

#define TRACE_INCLUDE_FILE trace

#include <trace/define_trace.h>