[PATCH v2 07/28] drm/bridge: Implement atomic_print_state

[Maxime Ripard]

Bridges have some fields in their state worth printing, but we don't
provide an atomic_print_state implementation to show those fields.

Provide one.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx>
---
 drivers/gpu/drm/drm_bridge.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 5b8e171afbe5..fba440bddcb3 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -506,14 +506,35 @@ drm_bridge_atomic_create_priv_state(struct drm_private_obj *obj)
 		return ERR_CAST(state);
 
 	return &state->base;
 }
 
+static void
+drm_bridge_atomic_print_priv_state(struct drm_printer *p,
+				   const struct drm_private_state *s)
+{
+	const struct drm_bridge_state *state = drm_priv_to_bridge_state(s);
+	struct drm_bridge *bridge = drm_priv_to_bridge(s->obj);
+
+	if (bridge->of_node)
+		drm_printf(p, "bridge: %ps (%pOFfc)\n", bridge->funcs, bridge->of_node);
+	else
+		drm_printf(p, "bridge: %ps\n", bridge->funcs);
+
+	drm_printf(p, "\tinput bus configuration:");
+	drm_printf(p, "\t\tcode: %04x", state->input_bus_cfg.format);
+	drm_printf(p, "\t\tflags: %08x", state->input_bus_cfg.flags);
+	drm_printf(p, "\toutput bus configuration:");
+	drm_printf(p, "\t\tcode: %04x", state->output_bus_cfg.format);
+	drm_printf(p, "\t\tflags: %08x", state->output_bus_cfg.flags);
+}
+
 static const struct drm_private_state_funcs drm_bridge_priv_state_funcs = {
 	.atomic_create_state = drm_bridge_atomic_create_priv_state,
 	.atomic_duplicate_state = drm_bridge_atomic_duplicate_priv_state,
 	.atomic_destroy_state = drm_bridge_atomic_destroy_priv_state,
+	.atomic_print_state = drm_bridge_atomic_print_priv_state,
 };
 
 /**
  * drm_private_obj_is_bridge - check if a private object backs a bridge
  * @obj: private object to check

-- 
2.53.0