linux-kernel - [PATCH v1 09/17] drm/mediatek: hdmi: add connector flag

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Date:   Mon, 19 Sep 2022 18:56:07 +0200
From:   Guillaume Ranquet <granquet@...libre.com>
To:     Vinod Koul <vkoul@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        CK Hu <ck.hu@...iatek.com>, Jitao shi <jitao.shi@...iatek.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     linux-mediatek@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org,
        Pablo Sun <pablo.sun@...iatek.com>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Mattijs Korpershoek <mkorpershoek@...libre.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-phy@...ts.infradead.org,
        Guillaume Ranquet <granquet@...libre.com>,
        devicetree@...r.kernel.org
Subject: [PATCH v1 09/17] drm/mediatek: hdmi: add connector flag

Add a flag to indicate support for an external connector

Signed-off-by: Guillaume Ranquet <granquet@...libre.com>

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
index 86653ebaacfd..30407603d693 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
@@ -199,20 +199,22 @@ int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, struct platform_device *pdev,
 		goto put_device;
 	}
 
-	remote = of_graph_get_remote_node(np, 1, 0);
-	if (!remote) {
-		ret = -EINVAL;
-		goto put_device;
-	}
-
-	if (!of_device_is_compatible(remote, "hdmi-connector")) {
-		hdmi->next_bridge = of_drm_find_bridge(remote);
-		if (!hdmi->next_bridge) {
-			dev_err(dev, "Waiting for external bridge\n");
-			of_node_put(remote);
-			ret = -EPROBE_DEFER;
+	if (hdmi->conf->has_connector) {
+		remote = of_graph_get_remote_node(np, 1, 0);
+		if (!remote) {
+			ret = -EINVAL;
 			goto put_device;
 		}
+
+		if (!of_device_is_compatible(remote, "hdmi-connector")) {
+			hdmi->next_bridge = of_drm_find_bridge(remote);
+			if (!hdmi->next_bridge) {
+				dev_err(dev, "Waiting for external bridge\n");
+				of_node_put(remote);
+				ret = -EPROBE_DEFER;
+				goto put_device;
+			}
+		}
 	}
 
 	i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
@@ -325,6 +327,7 @@ int mtk_drm_hdmi_remove(struct platform_device *pdev)
 static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
 	.tz_disabled = true,
 	.has_cec = true,
+	.has_connector = true,
 	.bridge_funcs = &mtk_mt8183_hdmi_bridge_funcs,
 	.mtk_hdmi_output_init = mtk_hdmi_output_init_mt8183,
 	.mtk_hdmi_clk_disable = mtk_hdmi_clk_disable_audio_mt8183,
@@ -338,6 +341,7 @@ static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
 	.max_mode_clock = 148500,
 	.cea_modes_only = true,
 	.has_cec = true,
+	.has_connector = true,
 	.bridge_funcs = &mtk_mt8183_hdmi_bridge_funcs,
 	.mtk_hdmi_output_init = mtk_hdmi_output_init_mt8183,
 	.mtk_hdmi_clk_disable = mtk_hdmi_clk_disable_audio_mt8183,
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
index 921bde150e11..62a14435be69 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
@@ -32,6 +32,7 @@ struct mtk_hdmi_conf {
 	bool tz_disabled;
 	bool cea_modes_only;
 	bool has_cec;
+	bool has_connector;
 	unsigned long max_mode_clock;
 	const struct drm_bridge_funcs *bridge_funcs;
 	void (*mtk_hdmi_output_init)(struct mtk_hdmi *hdmi);

-- 
b4 0.10.0-dev