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 <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
 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 b7b0ec7c2d4b..e6f1174be62a 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -548,14 +548,35 @@ 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_indent(p, 1, "input bus configuration:");
+       drm_printf_indent(p, 2, "code: %04x", state->input_bus_cfg.format);
+       drm_printf_indent(p, 2, "flags: %08x", state->input_bus_cfg.flags);
+       drm_printf_indent(p, 1, "output bus configuration:");
+       drm_printf_indent(p, 2, "code: %04x", state->output_bus_cfg.format);
+       drm_printf_indent(p, 2, "flags: %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

-- 
2.54.0

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