2022-05-16 21:40:32 +00:00
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From 64c3b233b38af0817c70d142c65b915ca1fbc71a Mon Sep 17 00:00:00 2001
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From: Matthias Reichl <hias@horus.com>
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Date: Thu, 30 Dec 2021 15:12:19 +0100
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Subject: [PATCH] drm/vc4: hdmi: Fix no video output on DVI monitors
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The drm edid parser doesn't signal RGB support on DVI monitors
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with old edid versions, leading to 8-bit RGB mode being rejected
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and no video on DVI monitors.
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As 8-bit RGB is mandatory on HDMI and DVI monitors anyways we can
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simply drop the RGB format check, aligning vc4 with other drivers.
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Signed-off-by: Matthias Reichl <hias@horus.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ---
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1 file changed, 3 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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2022-05-18 14:32:03 +00:00
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@@ -1415,9 +1415,6 @@ vc4_hdmi_sink_supports_format_bpc(const
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2022-05-16 21:40:32 +00:00
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case VC4_HDMI_OUTPUT_RGB:
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drm_dbg(dev, "RGB Format, checking the constraints.\n");
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- if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))
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- return false;
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-
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if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
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drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
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return false;
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