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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 @@ static const struct of_device_id vc4_dma
{}
};
+/*
+ * 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);
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