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38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
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From 069acde1ae77a0807062df0b009a51809cb3aa2a Mon Sep 17 00:00:00 2001
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From: Mario Kleiner <mario.kleiner.de@gmail.com>
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Date: Tue, 19 Jul 2016 20:58:57 +0200
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Subject: [PATCH] drm/vc4: Disallow interlaced modes on DPI.
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We already don't expose such modes to userspace, but make
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sure userspace can't sneak some interlaced mode in.
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Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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drivers/gpu/drm/vc4/vc4_dpi.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_dpi.c
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+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
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@@ -349,9 +349,20 @@ static void vc4_dpi_encoder_enable(struc
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}
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}
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+static bool vc4_dpi_encoder_mode_fixup(struct drm_encoder *encoder,
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+ const struct drm_display_mode *mode,
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+ struct drm_display_mode *adjusted_mode)
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+{
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+ if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
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+ return false;
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+
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+ return true;
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+}
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+
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static const struct drm_encoder_helper_funcs vc4_dpi_encoder_helper_funcs = {
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.disable = vc4_dpi_encoder_disable,
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.enable = vc4_dpi_encoder_enable,
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+ .mode_fixup = vc4_dpi_encoder_mode_fixup,
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};
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static const struct of_device_id vc4_dpi_dt_match[] = {
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