1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0673-vc4-drv-Only-notify-firmware-of-display-done-with-km.patch b/target/linux/bcm27xx/patches-5.10/950-0673-vc4-drv-Only-notify-firmware-of-display-done-with-km.patch
new file mode 100644
index 0000000000..a15245626f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0673-vc4-drv-Only-notify-firmware-of-display-done-with-km.patch
@@ -0,0 +1,43 @@
+From b14001459c04ec0d4a99c1a422077fbce5a0aebc Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 5 Jul 2021 11:43:12 +0100
+Subject: [PATCH] vc4/drv: Only notify firmware of display done with
+ kms
+
+fkms driver still wants firmware display to be active
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -258,6 +258,18 @@ const struct of_device_id vc4_dma_range_
+ 	{}
+ };
+ 
++/*
++ * we need this helper function for determining presence of fkms
++ * before it's been bound
++ */
++static bool firmware_kms(void)
++{
++	return of_device_is_available(of_find_compatible_node(NULL, NULL,
++	       "raspberrypi,rpi-firmware-kms")) ||
++	       of_device_is_available(of_find_compatible_node(NULL, NULL,
++	       "raspberrypi,rpi-firmware-kms-2711"));
++}
++
+ static int vc4_drm_bind(struct device *dev)
+ {
+ 	struct platform_device *pdev = to_platform_device(dev);
+@@ -318,7 +330,7 @@ static int vc4_drm_bind(struct device *d
+ 
+ 	drm_fb_helper_remove_conflicting_framebuffers(NULL, "vc4drmfb", false);
+ 
+-	if (vc4->firmware) {
++	if (vc4->firmware && !firmware_kms()) {
+ 		ret = rpi_firmware_property(vc4->firmware,
+ 					    RPI_FIRMWARE_NOTIFY_DISPLAY_DONE,
+ 					    NULL, 0);