[PATCH v5 11/15] drm/bridge: dw-hdmi-qp: Log resolution and refresh rate in atomic_enable()

[Cristian Ciocaltea]

The debug entry in the HDMI branch of dw_hdmi_qp_bridge_atomic_enable()
previously printed the literal string 'HDMI' as the mode field, giving
no information about the actual display timing being configured.

Extend it to include the active resolution and refresh rate by
retrieving the CRTC mode from the incoming atomic state:

  dw_hdmi_qp_bridge_atomic_enable mode=HDMI:1920x1080 at 50Hz fmt=RGB rate=185625000 bpc=10

This makes the log line self-contained and directly useful when
debugging mode-setting issues, format negotiation, or TMDS rate
mismatches without having to cross-reference a separate mode dump.

Tested-by: Igor Paunovic <royalnet026 at gmail.com>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
index b268c9376087..c6551f4cbf93 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -539,6 +539,8 @@ static void dw_hdmi_qp_bridge_atomic_enable(struct drm_bridge *bridge,
 {
 	struct dw_hdmi_qp *hdmi = bridge->driver_private;
 	struct drm_connector_state *conn_state;
+	const struct drm_display_mode *mode;
+	struct drm_crtc_state *crtc_state;
 	struct drm_connector *connector;
 	unsigned int op_mode;
 	int ret;
@@ -552,6 +554,9 @@ static void dw_hdmi_qp_bridge_atomic_enable(struct drm_bridge *bridge,
 		return;
 
 	if (connector->display_info.is_hdmi) {
+		crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
+		mode = &crtc_state->mode;
+
 		op_mode = 0;
 		hdmi->tmds_char_rate = conn_state->hdmi.tmds_char_rate;
 
@@ -559,7 +564,10 @@ static void dw_hdmi_qp_bridge_atomic_enable(struct drm_bridge *bridge,
 		if (ret)
 			dev_warn(hdmi->dev, "Failed to enable scrambling: %d\n", ret);
 
-		dev_dbg(hdmi->dev, "%s mode=HDMI %s rate=%llu bpc=%u scramb=%d\n", __func__,
+		dev_dbg(hdmi->dev,
+			"%s mode=HDMI:%ux%u@%uHz fmt=%s rate=%llu bpc=%u scramb=%d\n",
+			__func__, mode->hdisplay, mode->vdisplay,
+			drm_mode_vrefresh(mode),
 			drm_hdmi_connector_get_output_format_name(conn_state->hdmi.output_format),
 			conn_state->hdmi.tmds_char_rate, conn_state->hdmi.output_bpc,
 			connector->hdmi.scrambler_enabled);

-- 
2.55.0