linux-kernel - [PATCH 06/14] drm/bridge: dw-hdmi: Factor out hdmi_data

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Message-Id: <20240601-b4-rk3588-bridge-upstream-v1-6-f6203753232b@collabora.com>
Date: Sat, 01 Jun 2024 16:12:28 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Sandy Huang <hjc@...k-chips.com>, 
 Heiko Stübner <heiko@...ech.de>, 
 Andy Yan <andy.yan@...k-chips.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Mark Yao <markyao0591@...il.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 devicetree@...r.kernel.org, kernel@...labora.com, 
 Alexandre ARNOUD <aarnoud@...com>, Luis de Arquer <ldearquer@...il.com>
Subject: [PATCH 06/14] drm/bridge: dw-hdmi: Factor out hdmi_data_info setup

In preparation to add support for the HDMI 2.1 Quad-Pixel TX Controller
and minimize code duplication, factor out the hdmi_data_info setup from
dw_hdmi_setup() into a common dw_hdmi_prep_data() helper.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-common.h |  2 ++
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c        | 21 ++++++++++++++-------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-common.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-common.h
index e73b8eb7528b..5fb65db4aaea 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-common.h
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-common.h
@@ -156,6 +156,8 @@ void dw_hdmi_prep_avi_infoframe(struct hdmi_avi_infoframe *frame,
 				const struct drm_display_mode *mode);
 struct hdmi_vmode *dw_hdmi_prep_vmode(struct dw_hdmi *hdmi,
 				      const struct drm_display_mode *mode);
+void dw_hdmi_prep_data(struct dw_hdmi *hdmi,
+		       const struct drm_display_mode *mode);
 
 enum drm_connector_status
 dw_hdmi_connector_detect(struct drm_connector *connector, bool force);
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 5cf929f68ae9..d124c781da20 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2133,14 +2133,9 @@ static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi)
 		    HDMI_IH_MUTE_FC_STAT2);
 }
 
-static int dw_hdmi_setup(struct dw_hdmi *hdmi,
-			 const struct drm_connector *connector,
-			 const struct drm_display_mode *mode)
+void dw_hdmi_prep_data(struct dw_hdmi *hdmi,
+		       const struct drm_display_mode *mode)
 {
-	int ret;
-
-	hdmi_disable_overflow_interrupts(hdmi);
-
 	hdmi->vic = drm_match_cea_mode(mode);
 
 	if (!hdmi->vic) {
@@ -2180,6 +2175,18 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi,
 	hdmi->hdmi_data.pix_repet_factor = 0;
 	hdmi->hdmi_data.hdcp_enable = 0;
 	hdmi->hdmi_data.video_mode.mdataenablepolarity = true;
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_prep_data);
+
+static int dw_hdmi_setup(struct dw_hdmi *hdmi,
+			 const struct drm_connector *connector,
+			 const struct drm_display_mode *mode)
+{
+	int ret;
+
+	hdmi_disable_overflow_interrupts(hdmi);
+
+	dw_hdmi_prep_data(hdmi, mode);
 
 	/* HDMI Initialization Step B.1 */
 	hdmi_av_composer(hdmi, &connector->display_info, mode);

-- 
2.45.0