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f07e572f64
bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From 354bf89fd678a6da6256a6ac37440c27c3b62e80 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Tue, 30 Jun 2020 18:04:13 +0100
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Subject: [PATCH] drm/vc4: Allow interlaced HDMI modes from FKMS.
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Having checked the firmware handling for interlaced modes,
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it appears to be possible to support interlaced modes on
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HDMI without adverse side effects, so do so.
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https://github.com/raspberrypi/linux/issues/3694
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_firmware_kms.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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@@ -936,6 +936,9 @@ static void vc4_crtc_mode_set_nofb(struc
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break;
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}
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+ if (mode->flags & DRM_MODE_FLAG_INTERLACE)
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+ mb.timings.flags |= TIMINGS_FLAGS_INTERLACE;
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+
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mb.timings.video_id_code = frame.avi.video_code;
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if (!vc4_encoder->hdmi_monitor) {
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@@ -1632,7 +1635,7 @@ vc4_fkms_connector_init(struct drm_devic
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DRM_MODE_CONNECTOR_HDMIA);
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drm_connector_helper_add(connector,
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&vc4_fkms_connector_helper_funcs);
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- connector->interlace_allowed = 0;
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+ connector->interlace_allowed = 1;
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}
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ret = drm_mode_create_tv_margin_properties(dev);
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