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From: Maxime Ripard <maxime@cerno.tech>
To: Scott Branden <sbranden@broadcom.com>,
	Nicolas Saenz Julienne <nsaenz@kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>,
	Ray Jui <rjui@broadcom.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Maxime Ripard <maxime@cerno.tech>
Cc: linux-rpi-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	Phil Elwell <phil@raspberrypi.com>,
	Tim Gover <tim.gover@raspberrypi.com>,
	Dom Cobley <dom@raspberrypi.com>,
	devicetree@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com
Subject: [PATCH 3/5] drm/vc4: Remove conflicting framebuffers before callind bind_all
Date: Wed, 17 Nov 2021 15:50:38 +0100	[thread overview]
Message-ID: <20211117145040.334827-4-maxime@cerno.tech> (raw)
In-Reply-To: <20211117145040.334827-1-maxime@cerno.tech>

The bind hooks will modify their controller registers, so simplefb is
going to be unusable anyway. Let's avoid any transient state where it
could still be in the system but no longer functionnal.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_drv.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 16abc3a3d601..8ab89f805826 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -251,6 +251,10 @@ static int vc4_drm_bind(struct device *dev)
 	if (ret)
 		return ret;
 
+	ret = drm_aperture_remove_framebuffers(false, &vc4_drm_driver);
+	if (ret)
+		return ret;
+
 	ret = component_bind_all(dev, drm);
 	if (ret)
 		return ret;
@@ -259,10 +263,6 @@ static int vc4_drm_bind(struct device *dev)
 	if (ret)
 		goto unbind_all;
 
-	ret = drm_aperture_remove_framebuffers(false, &vc4_drm_driver);
-	if (ret)
-		goto unbind_all;
-
 	ret = vc4_kms_load(drm);
 	if (ret < 0)
 		goto unbind_all;
-- 
2.33.1


  parent reply	other threads:[~2021-11-17 14:51 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-17 14:50 [PATCH 0/5] drm/vc4: Use the firmware to stop the display pipeline Maxime Ripard
2021-11-17 14:50 ` [PATCH 1/5] dt-bindings: display: vc4: Add optional phandle to firmware Maxime Ripard
2021-11-29 22:49   ` Rob Herring
2021-11-17 14:50 ` [PATCH 2/5] firmware: raspberrypi: Add RPI_FIRMWARE_NOTIFY_DISPLAY_DONE Maxime Ripard
2021-11-17 14:50 ` Maxime Ripard [this message]
2021-11-17 14:50 ` [PATCH 4/5] drm/vc4: Notify the firmware when DRM is in charge Maxime Ripard
2021-11-17 14:50 ` [PATCH 5/5] ARM: dts: rpi: Add the firmware node to vc4 Maxime Ripard
2021-11-30 11:45 ` [PATCH 0/5] drm/vc4: Use the firmware to stop the display pipeline nicolas saenz julienne
2021-12-03 13:50   ` Maxime Ripard

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