openwrt/target/linux/bcm27xx/patches-5.4/950-0587-drm-vc4-hdmi-Add-HDMI-ID.patch

From 84c1a6034e361078d540c9b3bc672ccae623dc03 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Tue, 7 Jan 2020 13:14:07 +0100
Subject: [PATCH] drm/vc4: hdmi: Add HDMI ID

Some operations will need us to have the raw ID of the HDMI controller
in the BCM2711, such as the encoder type to register, the name of the
debugfs files, etc.

Let's add it to our variant structure.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 3 +--
 drivers/gpu/drm/vc4/vc4_hdmi.h | 5 +++++
 2 files changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1267,11 +1267,10 @@ static int vc4_hdmi_bind(struct device *
 	vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
 	if (!vc4_hdmi)
 		return -ENOMEM;
-
 	vc4_hdmi->pdev = pdev;
 	variant = of_device_get_match_data(dev);
 	vc4_hdmi->variant = variant;
-	vc4_hdmi->encoder.base.type = VC4_ENCODER_TYPE_HDMI0;
+	vc4_hdmi->encoder.base.type = variant->id ? VC4_ENCODER_TYPE_HDMI1 : VC4_ENCODER_TYPE_HDMI0;
 	encoder = &vc4_hdmi->encoder.base.base;
 
 	ret = variant->init_resources(vc4_hdmi);
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -27,6 +27,11 @@ struct vc4_hdmi;
 struct vc4_hdmi_register;
 
 struct vc4_hdmi_variant {
+	/* On devices that have multiple, different instances (like
+	 * the BCM2711), which instance is that variant useful for.
+	 */
+	unsigned int id;
+
 	/* List of the registers available on that variant */
 	const struct vc4_hdmi_register *registers;