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drm/tegra: dsi: Trace register accesses

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Add tracepoint events for DSI controller register accesses.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2017-08-15 15:41:12 +02:00
parent 07a8aab899
commit 75af8fa7fd
2 changed files with 14 additions and 1 deletions
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8
drivers/gpu/drm/tegra/dsi.c
View File

@ -28,6 +28,7 @@
#include "drm.h"
#include "dsi.h"
#include "mipi-phy.h"
#include "trace.h"
struct tegra_dsi_state {
struct drm_connector_state base;
@ -107,12 +108,17 @@ static struct tegra_dsi_state *tegra_dsi_get_state(struct tegra_dsi *dsi)
static inline u32 tegra_dsi_readl(struct tegra_dsi *dsi, unsigned int offset)
{
return readl(dsi->regs + (offset << 2));
u32 value = readl(dsi->regs + (offset << 2));
trace_dsi_readl(dsi->dev, offset, value);
return value;
}
static inline void tegra_dsi_writel(struct tegra_dsi *dsi, u32 value,
unsigned int offset)
{
trace_dsi_writel(dsi->dev, offset, value);
writel(value, dsi->regs + (offset << 2));
}

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

@ -38,6 +38,13 @@ DEFINE_EVENT(register_access, hdmi_readl,
TP_PROTO(struct device *dev, unsigned int offset, u32 value),
TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, dsi_writel,
TP_PROTO(struct device *dev, unsigned int offset, u32 value),
TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, dsi_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 */