From: Ville Syrjälä ville.syrjala@linux.intel.com
Add a debug function to print the region in a human readable format.
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com --- drivers/gpu/drm/drm_region.c | 22 ++++++++++++++++++++++ include/drm/drm_region.h | 1 + 2 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/drm_region.c b/drivers/gpu/drm/drm_region.c index c694424..82e1043 100644 --- a/drivers/gpu/drm/drm_region.c +++ b/drivers/gpu/drm/drm_region.c @@ -24,6 +24,7 @@ #include <linux/errno.h> #include <linux/export.h> #include <linux/kernel.h> +#include <drm/drmP.h> #include <drm/drm_region.h>
/** @@ -266,3 +267,24 @@ int drm_calc_vscale_relaxed(struct drm_region *src, struct drm_region *dst, return vscale; } EXPORT_SYMBOL(drm_calc_vscale_relaxed); + +/** + * drm_region_debug - print the region information + * @r: region to print + * @fixed_point: is the region in 16.16 fixed point format + */ +void drm_region_debug(const struct drm_region *r, bool fixed_point) +{ + int w = drm_region_width(r); + int h = drm_region_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_region_debug); diff --git a/include/drm/drm_region.h b/include/drm/drm_region.h index c12d953..10591f5 100644 --- a/include/drm/drm_region.h +++ b/include/drm/drm_region.h @@ -136,5 +136,6 @@ int drm_calc_hscale_relaxed(struct drm_region *src, struct drm_region *dst, int min_hscale, int max_hscale); int drm_calc_vscale_relaxed(struct drm_region *src, struct drm_region *dst, int min_vscale, int max_vscale); +void drm_region_debug(const struct drm_region *r, bool fixed_point);
#endif