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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-09 19:50:30 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-27 11:10:01 +0200 |
commit | 2340c646e6a5da658e114be2f721ff90853588d4 (patch) | |
tree | df9744d2344e71e8c5d1b75c3e1528bc474313fe /target/linux/brcm2708/patches-4.19/950-0591-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch | |
parent | 81d0da118694feb874f992093063a2852285d194 (diff) | |
download | upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.gz upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.bz2 upstream-2340c646e6a5da658e114be2f721ff90853588d4.zip |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0591-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0591-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0591-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch b/target/linux/brcm2708/patches-4.19/950-0591-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch new file mode 100644 index 0000000000..979dfc7b8a --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0591-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch @@ -0,0 +1,45 @@ +From 2372381c6850bf862a43997d95f4a5abcde156e9 Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Tue, 2 Apr 2019 13:29:00 -0700 +Subject: [PATCH 591/773] drm/vc4: Fix vblank timestamping for firmwarekms. + +The core doesn't expect a false return from the scanoutpos function in +normal usage, so we were doing the precise vblank timestamping path +and thus "immediate" vblank disables (even though firmwarekms can't +actually disable vblanks interrupts, sigh), and the kernel would get +confused when getting timestamp info when also turning vblanks back +on. + +Signed-off-by: Eric Anholt <eric@anholt.net> +--- + drivers/gpu/drm/vc4/vc4_crtc.c | 3 --- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 6 ++++++ + 2 files changed, 6 insertions(+), 3 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_crtc.c ++++ b/drivers/gpu/drm/vc4/vc4_crtc.c +@@ -133,9 +133,6 @@ bool vc4_crtc_get_scanoutpos(struct drm_ + int vblank_lines; + bool ret = false; + +- if (vc4->firmware_kms) +- return 0; +- + /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */ + + /* Get optional system timestamp before query. */ +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -673,6 +673,12 @@ static int vc4_fkms_bind(struct device * + + vc4->firmware_kms = true; + ++ /* firmware kms doesn't have precise a scanoutpos implementation, so ++ * we can't do the precise vblank timestamp mode. ++ */ ++ drm->driver->get_scanout_position = NULL; ++ drm->driver->get_vblank_timestamp = NULL; ++ + vc4_crtc = devm_kzalloc(dev, sizeof(*vc4_crtc), GFP_KERNEL); + if (!vc4_crtc) + return -ENOMEM; |