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gpio: twl6040: Use bitops

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It's nice to use BIT() macros rather than open coding the same.
It's good practice as sometimes people use BIT(31) and forget
that the constant must be cast unsigned long.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2018-09-03 09:59:57 +02:00
parent b4f53ed963
commit 4bef8bf20b
1 changed files with 4 additions and 3 deletions
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7
drivers/gpio/gpio-twl6040.c
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@ -15,6 +15,7 @@
#include <linux/irq.h>
#include <linux/gpio/driver.h>
#include <linux/platform_device.h>
#include <linux/bitops.h>
#include <linux/of.h>
#include <linux/mfd/twl6040.h>
@ -28,7 +29,7 @@ static int twl6040gpo_get(struct gpio_chip *chip, unsigned offset)
if (ret < 0)
return ret;
return (ret >> offset) & 1;
return !!(ret & BIT(offset));
}
static int twl6040gpo_direction_out(struct gpio_chip *chip, unsigned offset,
@ -49,9 +50,9 @@ static void twl6040gpo_set(struct gpio_chip *chip, unsigned offset, int value)
return;
if (value)
gpoctl = ret | (1 << offset);
gpoctl = ret | BIT(offset);
else
gpoctl = ret & ~(1 << offset);
gpoctl = ret & ~BIT(offset);
twl6040_reg_write(twl6040, TWL6040_REG_GPOCTL, gpoctl);
}