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openwrt/target/linux/bcm27xx/patches-6.6/950-0616-drm-vc4-txp-Add-horizontal-and-vertical-size-offset-.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
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>
2024-06-18 18:52:49 +02:00

60 lines
1.8 KiB
Diff

From c1180b13d216c9c7157b2c97aa8be986feba709c Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Thu, 27 Apr 2023 09:47:54 +0200
Subject: [PATCH 0616/1085] drm/vc4: txp: Add horizontal and vertical size
offset toggle bit
The new writeback controllers that can be found on the BCM2712 require
to have their horizontal and vertical size reduced by one.
Let's tie that behaviour to the compatible so we can support both the
new and old controllers.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_drv.h | 1 +
drivers/gpu/drm/vc4/vc4_txp.c | 14 ++++++++++++--
2 files changed, 13 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -549,6 +549,7 @@ struct vc4_crtc_data {
struct vc4_txp_data {
struct vc4_crtc_data base;
unsigned int has_byte_enable:1;
+ unsigned int size_minus_one:1;
};
extern const struct vc4_txp_data bcm2835_txp_data;
--- a/drivers/gpu/drm/vc4/vc4_txp.c
+++ b/drivers/gpu/drm/vc4/vc4_txp.c
@@ -291,6 +291,8 @@ static void vc4_txp_connector_atomic_com
struct drm_gem_dma_object *gem;
struct drm_display_mode *mode;
struct drm_framebuffer *fb;
+ unsigned int hdisplay;
+ unsigned int vdisplay;
u32 ctrl;
int idx;
int i;
@@ -330,9 +332,17 @@ static void vc4_txp_connector_atomic_com
gem = drm_fb_dma_get_gem_obj(fb, 0);
TXP_WRITE(TXP_DST_PTR, gem->dma_addr + fb->offsets[0]);
TXP_WRITE(TXP_DST_PITCH, fb->pitches[0]);
+
+ hdisplay = mode->hdisplay ?: 1;
+ vdisplay = mode->vdisplay ?: 1;
+ if (txp_data->size_minus_one) {
+ hdisplay -= 1;
+ vdisplay -= 1;
+ }
+
TXP_WRITE(TXP_DIM,
- VC4_SET_FIELD(mode->hdisplay, TXP_WIDTH) |
- VC4_SET_FIELD(mode->vdisplay, TXP_HEIGHT));
+ VC4_SET_FIELD(hdisplay, TXP_WIDTH) |
+ VC4_SET_FIELD(vdisplay, TXP_HEIGHT));
TXP_WRITE(TXP_DST_CTRL, ctrl);