From 7cd96a47281145aca4f9c8960a0a2e185b8bd70c Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt <xypron.glpk@gmx.de> Date: Mon, 14 Sep 2020 12:50:55 +0200 Subject: [PATCH] drivers: gpio: keep output value for input on sandbox For testing purposes keep the output value when switching to input. This allows us to manipulate the input value via the gpio command. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com> --- drivers/gpio/sandbox.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c index c2f80472b8..eb2600de31 100644 --- a/drivers/gpio/sandbox.c +++ b/drivers/gpio/sandbox.c @@ -185,7 +185,15 @@ static int sb_gpio_set_dir_flags(struct udevice *dev, unsigned int offset, dir_flags = get_gpio_dir_flags(dev, offset); - *dir_flags = flags; + /* + * For testing purposes keep the output value when switching to input. + * This allows us to manipulate the input value via the gpio command. + */ + if (flags & GPIOD_IS_IN) + *dir_flags = (flags & ~GPIOD_IS_OUT_ACTIVE) | + (*dir_flags & GPIOD_IS_OUT_ACTIVE); + else + *dir_flags = flags; return 0; } -- 2.39.5