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From 9654afa1c26516e3461cd8575f08b367fe5ff42a Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 15 Feb 2016 17:31:41 -0800
Subject: [PATCH] drm/vc4: Fix setting of vertical timings in the CRTC.
It looks like when I went to add the interlaced bits, I just took the
existing PV_VERT* block and indented it, instead of copy and pasting
it first. Without this, changing resolution never worked.
Signed-off-by: Eric Anholt <eric@anholt.net>
(cherry picked from commit a7c5047d1ce178dd2b1fa577fc8909ad663d56d5)
---
drivers/gpu/drm/vc4/vc4_crtc.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -217,6 +217,16 @@ static void vc4_crtc_mode_set_nofb(struc
PV_HORZB_HFP) |
VC4_SET_FIELD(mode->hdisplay, PV_HORZB_HACTIVE));
+ CRTC_WRITE(PV_VERTA,
+ VC4_SET_FIELD(mode->vtotal - mode->vsync_end,
+ PV_VERTA_VBP) |
+ VC4_SET_FIELD(mode->vsync_end - mode->vsync_start,
+ PV_VERTA_VSYNC));
+ CRTC_WRITE(PV_VERTB,
+ VC4_SET_FIELD(mode->vsync_start - mode->vdisplay,
+ PV_VERTB_VFP) |
+ VC4_SET_FIELD(vactive, PV_VERTB_VACTIVE));
+
if (interlace) {
CRTC_WRITE(PV_VERTA_EVEN,
VC4_SET_FIELD(mode->vtotal - mode->vsync_end - 1,
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