* [PATCH 34/62] gpio: gpio-raspberrypi-exp: Use new GPIO_LINE_DIRECTION
[not found] <cover.1572945875.git.matti.vaittinen@fi.rohmeurope.com>
@ 2019-11-05 10:28 ` Matti Vaittinen
0 siblings, 0 replies; only message in thread
From: Matti Vaittinen @ 2019-11-05 10:28 UTC (permalink / raw)
To: matti.vaittinen, mazziesaccount
Cc: Linus Walleij, Bartosz Golaszewski, linux-gpio, linux-kernel
It's hard for occasional GPIO code reader/writer to know if values 0/1
equal to IN or OUT. Use defined GPIO_LINE_DIRECTION_IN and
GPIO_LINE_DIRECTION_OUT to help them out.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
drivers/gpio/gpio-raspberrypi-exp.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-raspberrypi-exp.c b/drivers/gpio/gpio-raspberrypi-exp.c
index b77ea16ffa03..bb100e0124e6 100644
--- a/drivers/gpio/gpio-raspberrypi-exp.c
+++ b/drivers/gpio/gpio-raspberrypi-exp.c
@@ -147,7 +147,10 @@ static int rpi_exp_gpio_get_direction(struct gpio_chip *gc, unsigned int off)
get.gpio);
return ret ? ret : -EIO;
}
- return !get.direction;
+ if (get.direction)
+ return GPIO_LINE_DIRECTION_OUT;
+
+ return GPIO_LINE_DIRECTION_IN;
}
static int rpi_exp_gpio_get(struct gpio_chip *gc, unsigned int off)
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
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Simon says - in Latin please.
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Thanks to Simon Glass for the translation =]
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2019-11-05 10:28 ` [PATCH 34/62] gpio: gpio-raspberrypi-exp: Use new GPIO_LINE_DIRECTION Matti Vaittinen
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