From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add a debug function to print the rectangle in a human readable format.
v2: Renamed drm_region to drm_rect, the function from drm_region_debug
to drm_rect_debug_print(), and use %+d instead of +%d in the format.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_rect.c | 22 ++++++++++++++++++++++
include/drm/drm_rect.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/drm_rect.c b/drivers/gpu/drm/drm_rect.c
index 8270ab4..ed19b77 100644
--- a/drivers/gpu/drm/drm_rect.c
+++ b/drivers/gpu/drm/drm_rect.c
@@ -24,6 +24,7 @@
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/kernel.h>
+#include <drm/drmP.h>
#include <drm/drm_rect.h>
/**
@@ -271,3 +272,24 @@ int drm_rect_calc_vscale_relaxed(struct drm_rect *src,
return vscale;
}
EXPORT_SYMBOL(drm_rect_calc_vscale_relaxed);
+
+/**
+ * drm_rect_debug_print - print the rectangle information
+ * @r: rectangle to print
+ * @fixed_point: rectangle is in 16.16 fixed point format
+ */
+void drm_rect_debug_print(const struct drm_rect *r, bool fixed_point)
+{
+ int w = drm_rect_width(r);
+ int h = drm_rect_height(r);
+
+ if (fixed_point)
+ DRM_DEBUG_KMS("%d.%06ux%d.%06u%+d.%06u%+d.%06u\n",
+ w >> 16, ((w & 0xffff) * 15625) >> 10,
+ h >> 16, ((h & 0xffff) * 15625) >> 10,
+ r->x1 >> 16, ((r->x1 & 0xffff) * 15625) >> 10,
+ r->y1 >> 16, ((r->y1 & 0xffff) * 15625) >> 10);
+ else
+ DRM_DEBUG_KMS("%ux%u%+d%+d\n", w, h, r->x1, r->y1);
+}
+EXPORT_SYMBOL(drm_rect_debug_print);
diff --git a/include/drm/drm_rect.h b/include/drm/drm_rect.h
index 164e6ce..d5d4e1c 100644
--- a/include/drm/drm_rect.h
+++ b/include/drm/drm_rect.h
@@ -140,5 +140,6 @@ int drm_rect_calc_hscale_relaxed(struct drm_rect *src,
int drm_rect_calc_vscale_relaxed(struct drm_rect *src,
struct drm_rect *dst,
int min_vscale, int max_vscale);
+void drm_rect_debug_print(const struct drm_rect *r, bool fixed_point);
#endif
--
1.8.1.5
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