[PATCH 1/6] drm/modes: add drm_mode_print() to dump mode in drm_printer

[Jani Nikula <jani.nikula@xxxxxxxxx>]

Add a printer based function for dumping the modeline, so it's not
limited to KMS debug.

Note: The printed output intentionally does not have the "Modeline"
prefix. Prefix, if any, is for the caller to decide when initializing
drm_printer.

Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
 drivers/gpu/drm/drm_modes.c | 13 +++++++++++++
 include/drm/drm_modes.h     |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index c4f88c3a93b7..711750ab57c7 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -49,6 +49,19 @@
 
 #include "drm_crtc_internal.h"
 
+/**
+ * drm_mode_print - print a mode to drm printer
+ * @p: drm printer
+ * @mode: mode to print
+ *
+ * Write @mode description to struct drm_printer @p.
+ */
+void drm_mode_print(struct drm_printer *p, const struct drm_display_mode *mode)
+{
+	drm_printf(p, DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
+}
+EXPORT_SYMBOL(drm_mode_print);
+
 /**
  * drm_mode_debug_printmodeline - print a mode to dmesg
  * @mode: mode to print
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index b9bb92e4b029..10c45014fbff 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -32,6 +32,7 @@
 #include <drm/drm_mode_object.h>
 #include <drm/drm_connector.h>
 
+struct drm_printer;
 struct videomode;
 
 /*
@@ -460,6 +461,7 @@ int drm_mode_convert_umode(struct drm_device *dev,
 			   struct drm_display_mode *out,
 			   const struct drm_mode_modeinfo *in);
 void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
+void drm_mode_print(struct drm_printer *p, const struct drm_display_mode *mode);
 void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
 bool drm_mode_is_420_only(const struct drm_display_info *display,
 			  const struct drm_display_mode *mode);
-- 
2.39.2