[PATCH v2 07/21] drm/connector: Print connector colorspace in state debugfs

[Harry Wentland]

v3: Fix kerneldocs (kernel test robot)

Signed-off-by: Harry Wentland <harry.wentl...@amd.com>
Cc: Pekka Paalanen <ppaala...@gmail.com>
Cc: Sebastian Wick <sebastian.w...@redhat.com>
Cc: vitaly.pros...@amd.com
Cc: Uma Shankar <uma.shan...@intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Joshua Ashton <jos...@froggi.es>
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: amd-...@lists.freedesktop.org
Reviewed-By: Joshua Ashton <jos...@froggi.es>
---
 drivers/gpu/drm/drm_atomic.c    |  1 +
 drivers/gpu/drm/drm_connector.c | 15 +++++++++++++++
 include/drm/drm_connector.h     |  1 +
 3 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index c0dc5858a723..d6d04c4ccfc0 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1071,6 +1071,7 @@ static void drm_atomic_connector_print_state(struct 
drm_printer *p,
        drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : 
"(null)");
        drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware);
        drm_printf(p, "\tmax_requested_bpc=%d\n", state->max_requested_bpc);
+       drm_printf(p, "\tcolorspace=%s\n", 
drm_get_colorspace_name(state->colorspace));
 
        if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
                if (state->writeback_job && state->writeback_job->fb)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 8e81105fb2ab..913e50a8bb38 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1031,6 +1031,21 @@ static const char * const colorspace_names[] = {
        [DRM_MODE_COLORIMETRY_BT601_YCC] = "BT601_YCC",
 };
 
+/**
+ * drm_get_colorspace_name - return a string for color encoding
+ * @colorspace: color space to compute name of
+ *
+ * In contrast to the other drm_get_*_name functions this one here returns a
+ * const pointer and hence is threadsafe.
+ */
+const char *drm_get_colorspace_name(enum drm_colorspace colorspace)
+{
+       if (WARN_ON(colorspace >= ARRAY_SIZE(colorspace_names)))
+               return "unknown";
+
+       return colorspace_names[colorspace];
+}
+
 static const u32 hdmi_colorspaces =
        BIT(DRM_MODE_COLORIMETRY_SMPTE_170M_YCC) |
        BIT(DRM_MODE_COLORIMETRY_BT709_YCC) |
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 5825c6ab969b..545eb6eb456a 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1906,6 +1906,7 @@ void drm_connector_list_iter_end(struct 
drm_connector_list_iter *iter);
 
 bool drm_connector_has_possible_encoder(struct drm_connector *connector,
                                        struct drm_encoder *encoder);
+const char *drm_get_colorspace_name(enum drm_colorspace colorspace);
 
 /**
  * drm_for_each_connector_iter - connector_list iterator macro
-- 
2.39.0