Attachment 642918 Details for Bug 806091 – EDID_QUIRK_DISABLE_INFOFRAMES turns off all HDMI-specific functionality

[patch] EDID_QUIRK_DISABLE_INFOFRAMES turns off all HDMI-specific functionality

0002-drm-Add-EDID-quirk-to-disable-HDMI-InfoFrames.patch (text/plain), 1.48 KB, created by Ian Pilcher on 2012-11-11 16:38:28 UTC

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Creator: Ian Pilcher

Created: 2012-11-11 16:38:28 UTC

Size: 1.48 KB

patch

obsolete

>From 5eb983bef84ca9ad918f7f29fbadeea04f8ba6d0 Mon Sep 17 00:00:00 2001
>From: Ian Pilcher <arequipeno@gmail.com>
>Date: Fri, 28 Sep 2012 01:23:54 -0500
>Subject: [PATCH v5 2/3] drm: Add EDID quirk to disable HDMI InfoFrames
>
>EDID_QUIRK_DISABLE_INFOFRAMES turns off all HDMI-specific
>functionality (audio, HDCP, 3D, etc.).  Intended for displays that
>are confused by *any* InfoFrames.
>
>Signed-off-by: Ian Pilcher <arequipeno@gmail.com>
>---
> drivers/gpu/drm/drm_edid.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
>diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
>index ea535f6..0d788b5 100644
>--- a/drivers/gpu/drm/drm_edid.c
>+++ b/drivers/gpu/drm/drm_edid.c
>@@ -70,6 +70,8 @@
> #define EDID_QUIRK_DETAILED_SYNC_PP		(1 << 6)
> /* Force reduced-blanking timings for detailed modes */
> #define EDID_QUIRK_FORCE_REDUCED_BLANKING	(1 << 7)
>+/* Display is confused by InfoFrames; don't send any */
>+#define EDID_QUIRK_DISABLE_INFOFRAMES		(1 << 8)
> 
> struct detailed_mode_closure {
> 	struct drm_connector *connector;
>@@ -2109,6 +2111,14 @@ bool drm_detect_hdmi_monitor(struct edid *edid)
> 	int i, hdmi_id;
> 	int start_offset, end_offset;
> 	bool is_hdmi = false;
>+	char buf[EDID_DISPLAY_ID_BUF_SIZE];
>+
>+	if (edid_get_quirks(edid) & EDID_QUIRK_DISABLE_INFOFRAMES) {
>+		DRM_INFO("Disabling HDMI InfoFrames on display %s "
>+			 "due to EDID quirk\n",
>+			 drm_edid_display_id_format(edid->display_id, buf, 1));
>+		goto end;
>+	}
> 
> 	edid_ext = drm_find_cea_extension(edid);
> 	if (!edid_ext)
>-- 
>1.7.11.4
>

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