linux-kernel - [PATCH] drm: fix HDR static metadata type field numbering

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Date:   Wed, 27 Nov 2019 14:42:35 +0000
From:   Laurentiu Palcu <laurentiu.palcu@....com>
To:     Uma Shankar <uma.shankar@...el.com>,
        Ville Syrjala <ville.syrjala@...ux.intel.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        Laurentiu Palcu <laurentiu.palcu@....com>
Subject: [PATCH] drm: fix HDR static metadata type field numbering

According to CTA-861 specification, HDR static metadata data block allows a
sink to indicate which HDR metadata types it supports by setting the SM_0 to
SM_7 bits. Currently, only Static Metadata Type 1 is supported and this is
indicated by setting the SM_0 bit to 1.

However, the connector->hdr_sink_metadata.hdmi_type1.metadata_type is always
0, because hdr_metadata_type() in drm_edid.c checks the wrong bit.

This patch corrects the HDMI_STATIC_METADATA_TYPE1 bit position.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@....com>
---
 include/linux/hdmi.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h
index 9918a6c..216e25e 100644
--- a/include/linux/hdmi.h
+++ b/include/linux/hdmi.h
@@ -155,7 +155,7 @@ enum hdmi_content_type {
 };

 enum hdmi_metadata_type {
-	HDMI_STATIC_METADATA_TYPE1 = 1,
+	HDMI_STATIC_METADATA_TYPE1 = 0,
 };

 enum hdmi_eotf {
-- 
2.7.4