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openmptcprouter/6.6/target/linux/bcm27xx/patches-6.6/0964-dtoverlays-Fixup-pendown-gpio-polarity-for-ads7846-u.patch
Ycarus (Yannick Chabanois) 12de1d2995 Add RPI kernel 6.6 support
2024-04-05 20:55:33 +02:00

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5.9 KiB
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From c895cecf59190b45b8cfe3ad3f8edf3a7267c7f0 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Tue, 12 Mar 2024 16:10:37 +0000
Subject: [PATCH 0964/1002] dtoverlays: Fixup pendown gpio polarity for ads7846
users
The driver has been converted to use gpiod, which will normalise
polarity based on DT.
The piscreen overlay (and others) incorrectly defines the pendown
GPIO as being ACTIVE_HIGH (0), althought triggering on the high-low
edge for pen down. It therefore tries reading the pen position when
not being touched, and stops when it is touched.
Tested with piscreen and ads7846 overlays. Also fixed on others
where the interrupt says high->low but the polarity was ACTIVE_HIGH.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/overlays/ads7846-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/hy28a-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/hy28b-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/mz61581-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/piscreen-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/piscreen2r-overlay.dts | 2 +-
arch/arm/boot/dts/overlays/tinylcd35-overlay.dts | 2 +-
8 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/arm/boot/dts/overlays/ads7846-overlay.dts b/arch/arm/boot/dts/overlays/ads7846-overlay.dts
index 1c5c9b6bb6ff..211a002c0b34 100644
--- a/arch/arm/boot/dts/overlays/ads7846-overlay.dts
+++ b/arch/arm/boot/dts/overlays/ads7846-overlay.dts
@@ -57,7 +57,7 @@ ads7846: ads7846@1 {
spi-max-frequency = <2000000>;
interrupts = <255 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 255 0>;
+ pendown-gpio = <&gpio 255 1>;
/* driver defaults */
ti,x-min = /bits/ 16 <0>;
diff --git a/arch/arm/boot/dts/overlays/hy28a-overlay.dts b/arch/arm/boot/dts/overlays/hy28a-overlay.dts
index 5843a5e9c86a..d0d52ebd9bd5 100644
--- a/arch/arm/boot/dts/overlays/hy28a-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hy28a-overlay.dts
@@ -73,7 +73,7 @@ hy28a_ts: hy28a-ts@1 {
spi-max-frequency = <2000000>;
interrupts = <17 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 17 0>;
+ pendown-gpio = <&gpio 17 1>;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
};
diff --git a/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
index 95bfb1eadc20..9df33c5d95bb 100644
--- a/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
@@ -132,7 +132,7 @@ hy28b_ts: hy28b-ts@1 {
spi-max-frequency = <2000000>;
interrupts = <17 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 17 0>;
+ pendown-gpio = <&gpio 17 1>;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
};
diff --git a/arch/arm/boot/dts/overlays/hy28b-overlay.dts b/arch/arm/boot/dts/overlays/hy28b-overlay.dts
index 9edd0848d555..421bde94a4a0 100644
--- a/arch/arm/boot/dts/overlays/hy28b-overlay.dts
+++ b/arch/arm/boot/dts/overlays/hy28b-overlay.dts
@@ -128,7 +128,7 @@ hy28b_ts: hy28b-ts@1 {
spi-max-frequency = <2000000>;
interrupts = <17 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 17 0>;
+ pendown-gpio = <&gpio 17 1>;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
};
diff --git a/arch/arm/boot/dts/overlays/mz61581-overlay.dts b/arch/arm/boot/dts/overlays/mz61581-overlay.dts
index 6e00e8b2ddf2..101ad21d8093 100644
--- a/arch/arm/boot/dts/overlays/mz61581-overlay.dts
+++ b/arch/arm/boot/dts/overlays/mz61581-overlay.dts
@@ -99,7 +99,7 @@ mz61581_ts: mz61581_ts@1 {
spi-max-frequency = <2000000>;
interrupts = <4 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 4 0>;
+ pendown-gpio = <&gpio 4 1>;
ti,x-plate-ohms = /bits/ 16 <60>;
ti,pressure-max = /bits/ 16 <255>;
diff --git a/arch/arm/boot/dts/overlays/piscreen-overlay.dts b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
index 8fa2426f7114..29bcd41f39cf 100644
--- a/arch/arm/boot/dts/overlays/piscreen-overlay.dts
+++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
@@ -87,7 +87,7 @@ piscreen_ts: piscreen-ts@1 {
spi-max-frequency = <2000000>;
interrupts = <17 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 17 0>;
+ pendown-gpio = <&gpio 17 GPIO_ACTIVE_LOW>;
ti,swap-xy;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
diff --git a/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
index 9d2b51101969..4468f4a54bf7 100644
--- a/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
+++ b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
@@ -88,7 +88,7 @@ piscreen2_ts: piscreen2-ts@1 {
spi-max-frequency = <2000000>;
interrupts = <17 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 17 0>;
+ pendown-gpio = <&gpio 17 1>;
ti,swap-xy;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
diff --git a/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
index a102b09e3ab5..edc5889b6f5f 100644
--- a/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
+++ b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
@@ -121,7 +121,7 @@ tinylcd35_ts: tinylcd35_ts@1 {
spi-max-frequency = <2000000>;
interrupts = <5 2>; /* high-to-low edge triggered */
interrupt-parent = <&gpio>;
- pendown-gpio = <&gpio 5 0>;
+ pendown-gpio = <&gpio 5 1>;
ti,x-plate-ohms = /bits/ 16 <100>;
ti,pressure-max = /bits/ 16 <255>;
};
--
2.44.0
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