Re: [REGRESSION] omapdrm/N900 display broken

[Tomi Valkeinen <tomi.valkeinen@ti.com>]

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Hi Aaro, Ivaylo,

On 24/11/2020 23:03, Ivaylo Dimitrov wrote:

> Is there any progress on the issue? I tried 5.9.1 and still nothing displayed.

Can you test the attached patch?

 Tomi

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From 97c55032ac5c44885b0ec219467699af0b6153c1 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Thu, 26 Nov 2020 16:04:24 +0200
Subject: [PATCH] drm/omap: sdi: fix bridge enable/disable

When the SDI output was converted to DRM bridge, the atomic versions of
enable and disable funcs were used. This was not intended, as that would
require implementing other atomic funcs too. This leads to:

WARNING: CPU: 0 PID: 18 at drivers/gpu/drm/drm_bridge.c:708 drm_atomic_helper_commit_modeset_enables+0x134/0x268

and display not working.

Fix this by using the legacy enable/disable funcs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Fixes: 8bef8a6d5da81b909a190822b96805a47348146f ("drm/omap: sdi: Register a drm_bridge")
Cc: stable@vger.kernel.org #v5.7+
---
 drivers/gpu/drm/omapdrm/dss/sdi.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c
index 033fd30074b0..282e4c837cd9 100644
--- a/drivers/gpu/drm/omapdrm/dss/sdi.c
+++ b/drivers/gpu/drm/omapdrm/dss/sdi.c
@@ -195,8 +195,7 @@ static void sdi_bridge_mode_set(struct drm_bridge *bridge,
 	sdi->pixelclock = adjusted_mode->clock * 1000;
 }
 
-static void sdi_bridge_enable(struct drm_bridge *bridge,
-			      struct drm_bridge_state *bridge_state)
+static void sdi_bridge_enable(struct drm_bridge *bridge)
 {
 	struct sdi_device *sdi = drm_bridge_to_sdi(bridge);
 	struct dispc_clock_info dispc_cinfo;
@@ -259,8 +258,7 @@ static void sdi_bridge_enable(struct drm_bridge *bridge,
 	regulator_disable(sdi->vdds_sdi_reg);
 }
 
-static void sdi_bridge_disable(struct drm_bridge *bridge,
-			       struct drm_bridge_state *bridge_state)
+static void sdi_bridge_disable(struct drm_bridge *bridge)
 {
 	struct sdi_device *sdi = drm_bridge_to_sdi(bridge);
 
@@ -278,8 +276,8 @@ static const struct drm_bridge_funcs sdi_bridge_funcs = {
 	.mode_valid = sdi_bridge_mode_valid,
 	.mode_fixup = sdi_bridge_mode_fixup,
 	.mode_set = sdi_bridge_mode_set,
-	.atomic_enable = sdi_bridge_enable,
-	.atomic_disable = sdi_bridge_disable,
+	.enable = sdi_bridge_enable,
+	.disable = sdi_bridge_disable,
 };
 
 static void sdi_bridge_init(struct sdi_device *sdi)
-- 
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Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki