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drivers: gpio: keep output value for input on sandbox

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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>
This commit is contained in:
Heinrich Schuchardt 2020-09-14 12:50:55 +02:00 • committed by Tom Rini
parent 39916bb45f
commit 7cd96a4728
1 changed files with 9 additions and 1 deletions
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10
drivers/gpio/sandbox.c
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@ -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;
}