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authorMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>2019-11-06 11:54:12 +0300
committerLinus Walleij <linus.walleij@linaro.org>2019-11-07 11:27:48 +0300
commite42615ec233b30dfaf117b108d4cb49455b4df1d (patch)
treee3d05700c2310d6bde433b268fed6284a4eec5b1 /drivers/gpio/gpio-exar.c
parent9208b1e77d6e8e9776f34f46ef4079ecac9c3c25 (diff)
downloadlinux-e42615ec233b30dfaf117b108d4cb49455b4df1d.tar.xz
gpio: Use new GPIO_LINE_DIRECTION
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. NOTE - for gpio-amd-fch and gpio-bd9571mwv: This commit also changes the return value for direction get to equal 1 for direction INPUT. Prior this commit these drivers might have returned some other positive value but 1 for INPUT. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Acked-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Acked-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-exar.c')
-rw-r--r--drivers/gpio/gpio-exar.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c
index fae327d5b06e..da1ef0b1c291 100644
--- a/drivers/gpio/gpio-exar.c
+++ b/drivers/gpio/gpio-exar.c
@@ -77,7 +77,10 @@ static int exar_get_direction(struct gpio_chip *chip, unsigned int offset)
EXAR_OFFSET_MPIOSEL_HI : EXAR_OFFSET_MPIOSEL_LO;
unsigned int bit = (offset + exar_gpio->first_pin) % 8;
- return !!(exar_get(chip, addr) & BIT(bit));
+ if (exar_get(chip, addr) & BIT(bit))
+ return GPIO_LINE_DIRECTION_IN;
+
+ return GPIO_LINE_DIRECTION_OUT;
}
static int exar_get_value(struct gpio_chip *chip, unsigned int offset)