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Add RPI4 beta support

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Ycarus (Yannick Chabanois) 2019-06-24 19:52:48 +02:00
parent abf18246f5
commit 5f08b288eb
155 changed files with 29237 additions and 0 deletions
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52
root/target/linux/brcm2708/patches-4.19/0601-drm-vc4-Fix-vblank-timestamping-for-firmwarekms.patch Normal file
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@ -0,0 +1,52 @@
From 6da63d9e4bd78b9db8fcf07c7322d0a92696f0b1 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Tue, 2 Apr 2019 13:29:00 -0700
Subject: [PATCH 601/678] 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(-)
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 5a286801faa5..5615ceb15708 100644
--- 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_device *dev, unsigned int crtc_id,
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. */
diff --git a/drivers/gpu/drm/vc4/vc4_firmware_kms.c b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
index fe23983524cc..eed391f1d160 100644
--- 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 *dev, struct device *master, void *data)
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;
--
2.19.1