GPIO: xilinx: Use BIT macro

Use BIT macro from linux/bitops.h.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index 791ddae..792a05a 100644 (file)
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -94,9 +94,9 @@ static void xgpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
 
        /* Write to GPIO signal and set its direction to output */
        if (val)
-               chip->gpio_state |= 1 << gpio;
+               chip->gpio_state |= BIT(gpio);
        else
-               chip->gpio_state &= ~(1 << gpio);
+               chip->gpio_state &= ~BIT(gpio);
 
        xgpio_writereg(regs + chip->offset + XGPIO_DATA_OFFSET,
                                                         chip->gpio_state);
@@ -124,7 +124,7 @@ static int xgpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
        spin_lock_irqsave(&chip->gpio_lock, flags);
 
        /* Set the GPIO bit in shadow register and set direction as input */
-       chip->gpio_dir |= (1 << gpio);
+       chip->gpio_dir |= BIT(gpio);
        xgpio_writereg(regs + chip->offset + XGPIO_TRI_OFFSET, chip->gpio_dir);
 
        spin_unlock_irqrestore(&chip->gpio_lock, flags);
@@ -154,14 +154,14 @@ static int xgpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
 
        /* Write state of GPIO signal */
        if (val)
-               chip->gpio_state |= 1 << gpio;
+               chip->gpio_state |= BIT(gpio);
        else
-               chip->gpio_state &= ~(1 << gpio);
+               chip->gpio_state &= ~BIT(gpio);
        xgpio_writereg(regs + chip->offset + XGPIO_DATA_OFFSET,
                       chip->gpio_state);
 
        /* Clear the GPIO bit in shadow register and set direction as output */
-       chip->gpio_dir &= (~(1 << gpio));
+       chip->gpio_dir &= ~BIT(gpio);
        xgpio_writereg(regs + chip->offset + XGPIO_TRI_OFFSET, chip->gpio_dir);
 
        spin_unlock_irqrestore(&chip->gpio_lock, flags);