openwrt/target/linux/bcm27xx/patches-4.19/950-0514-drm-vc4-Make-sure-that-vblank-waits-work-without-v3d.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

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From 561918ec5e668f9d940051737d861ee0592816f6 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Fri, 29 Mar 2019 12:04:36 -0700
Subject: [PATCH] drm/vc4: Make sure that vblank waits work without v3d
loaded.
This flag exists to protect legacy drivers, but when vc4's v3d doesn't
probe, it doesn't get set up by vc4_v3d.c's call of drm_irq_install.
This resulted in applications running as fast as possible, and laggy
performance from compton as it had to wait for the latest rendering by
the application for its presentation.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/gpu/drm/vc4/vc4_kms.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -422,6 +422,7 @@ int vc4_kms_load(struct drm_device *dev)
/* Set support for vblank irq fast disable, before drm_vblank_init() */
dev->vblank_disable_immediate = true;
+ dev->irq_enabled = true;
ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");