mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
8c405cdccc
The patches were generated from the RPi repo with the following command: git format-patch v6.6.34..rpi-6.1.y Some patches needed rebasing and, as usual, the applied and reverted, wireless drivers, Github workflows, READMEs and defconfigs patches were removed. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
From 4fe131368be6d89499a52a53f4043f4d92f1956b Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Fri, 5 Apr 2024 17:40:05 +0100
|
|
Subject: [PATCH 1066/1085] drm/vc4: Add vblank callback to DSI0 to reset FIFO
|
|
|
|
The pixel to byte FIFO appears to not always reset correctly,
|
|
which can lead to colour errors and/or horizontal shifts.
|
|
Reset on every vblank to work around the issue.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_dsi.c | 12 ++++++++++++
|
|
1 file changed, 12 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
|
|
@@ -1438,6 +1438,15 @@ static const struct drm_bridge_funcs vc4
|
|
.mode_fixup = vc4_dsi_bridge_mode_fixup,
|
|
};
|
|
|
|
+static void vc4_dsi_reset_fifo(struct drm_encoder *encoder)
|
|
+{
|
|
+ struct vc4_dsi *dsi = to_vc4_dsi(encoder);
|
|
+ u32 val;
|
|
+
|
|
+ val = DSI_PORT_READ(CTRL);
|
|
+ DSI_PORT_WRITE(CTRL, val | DSI0_CTRL_CLR_PBCF);
|
|
+}
|
|
+
|
|
static int vc4_dsi_late_register(struct drm_encoder *encoder)
|
|
{
|
|
struct drm_device *drm = encoder->dev;
|
|
@@ -1682,6 +1691,9 @@ static int vc4_dsi_bind(struct device *d
|
|
dsi->encoder.type = dsi->variant->port ?
|
|
VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
|
|
|
|
+ if (dsi->encoder.type == VC4_ENCODER_TYPE_DSI0)
|
|
+ dsi->encoder.vblank = vc4_dsi_reset_fifo;
|
|
+
|
|
dsi->regs = vc4_ioremap_regs(pdev, 0);
|
|
if (IS_ERR(dsi->regs))
|
|
return PTR_ERR(dsi->regs);
|