diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0108-drm-vc4-Don-t-wait-for-vblank-on-fkms-cursor-updates.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0108-drm-vc4-Don-t-wait-for-vblank-on-fkms-cursor-updates.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0108-drm-vc4-Don-t-wait-for-vblank-on-fkms-cursor-updates.patch b/target/linux/bcm27xx/patches-5.4/950-0108-drm-vc4-Don-t-wait-for-vblank-on-fkms-cursor-updates.patch new file mode 100644 index 0000000000..73525d1c2c --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0108-drm-vc4-Don-t-wait-for-vblank-on-fkms-cursor-updates.patch @@ -0,0 +1,28 @@ +From 345bf435405d58243c39d64a19a130a4a51c7fac Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Mon, 5 Feb 2018 18:53:18 +0000 +Subject: [PATCH] drm/vc4: Don't wait for vblank on fkms cursor + updates. + +We don't use the same async update path between fkms and normal kms, +and the normal kms workaround ended up making us wait. This became a +larger problem in rpi-4.14.y, as the USB HID update rate throttling +got (accidentally?) dropped. + +Signed-off-by: Eric Anholt <eric@anholt.net> +--- + drivers/gpu/drm/vc4/vc4_kms.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/gpu/drm/vc4/vc4_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_kms.c +@@ -240,7 +240,8 @@ static int vc4_atomic_commit(struct drm_ + * drm_atomic_helper_setup_commit() from auto-completing + * commit->flip_done. + */ +- state->legacy_cursor_update = false; ++ if (!vc4->firmware_kms) ++ state->legacy_cursor_update = false; + ret = drm_atomic_helper_setup_commit(state, nonblock); + if (ret) + return ret; |