mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-02-15 04:42:02 +00:00
27 lines
1,013 B
Diff
27 lines
1,013 B
Diff
From 3de45a590b6b8f96345b10c7cb1965bdf1a22ed5 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Wed, 12 Jun 2019 17:15:05 +0100
|
|
Subject: [PATCH 141/828] w1: w1-gpio: Make GPIO an output for strong pullup
|
|
|
|
The logic to drive the data line high to implement a strong pullup
|
|
assumed that the pin was already an output - setting a value does
|
|
not change an input.
|
|
|
|
See: https://github.com/raspberrypi/firmware/issues/1143
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/w1/masters/w1-gpio.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
--- a/drivers/w1/masters/w1-gpio.c
|
|
+++ b/drivers/w1/masters/w1-gpio.c
|
|
@@ -30,7 +30,7 @@ static u8 w1_gpio_set_pullup(void *data,
|
|
* This will OVERRIDE open drain emulation and force-pull
|
|
* the line high for some time.
|
|
*/
|
|
- gpiod_set_raw_value(pdata->gpiod, 1);
|
|
+ gpiod_direction_output_raw(pdata->gpiod, 1);
|
|
msleep(pdata->pullup_duration);
|
|
/*
|
|
* This will simply set the line as input since we are doing
|