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authorLinus Walleij <linus.walleij@linaro.org>2018-03-12 14:11:45 +0300
committerLinus Walleij <linus.walleij@linaro.org>2018-03-19 03:50:30 +0300
commit96d0d03dc447993d0eaca5c4294b7560860a378b (patch)
tree8f87c0431409cff31add98875615858f2bb834fc /drivers/gpio/gpio-janz-ttl.c
parent1c947b7f48783a3470611fc3eba61daac2629148 (diff)
downloadlinux-96d0d03dc447993d0eaca5c4294b7560860a378b.tar.xz
gpio: janz-ttl: Use BIT() macro
This makes the code more readable by using the BIT() macro. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-janz-ttl.c')
-rw-r--r--drivers/gpio/gpio-janz-ttl.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-janz-ttl.c b/drivers/gpio/gpio-janz-ttl.c
index e9f4612cd2cc..6b9bf8b7bf16 100644
--- a/drivers/gpio/gpio-janz-ttl.c
+++ b/drivers/gpio/gpio-janz-ttl.c
@@ -18,6 +18,7 @@
#include <linux/io.h>
#include <linux/gpio/driver.h>
#include <linux/slab.h>
+#include <linux/bitops.h>
#include <linux/mfd/janz.h>
@@ -33,9 +34,9 @@
#define MASTER_INT_CTL 0x00
#define MASTER_CONF_CTL 0x01
-#define CONF_PAE (1 << 2)
-#define CONF_PBE (1 << 7)
-#define CONF_PCE (1 << 4)
+#define CONF_PAE BIT(2)
+#define CONF_PBE BIT(7)
+#define CONF_PCE BIT(4)
struct ttl_control_regs {
__be16 portc;
@@ -74,7 +75,7 @@ static int ttl_get_value(struct gpio_chip *gpio, unsigned offset)
}
spin_lock(&mod->lock);
- ret = *shadow & (1 << offset);
+ ret = *shadow & BIT(offset);
spin_unlock(&mod->lock);
return !!ret;
}
@@ -100,9 +101,9 @@ static void ttl_set_value(struct gpio_chip *gpio, unsigned offset, int value)
spin_lock(&mod->lock);
if (value)
- *shadow |= (1 << offset);
+ *shadow |= BIT(offset);
else
- *shadow &= ~(1 << offset);
+ *shadow &= ~BIT(offset);
iowrite16be(*shadow, port);
spin_unlock(&mod->lock);