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gpio: tc3589x: use BIT() macro 

This switch to use BIT(n) instead of (1 << n) which is less
to the point. Most GPIO drivers do this to avoid mistakes.
Also switch from using <linux/gpio.h> to the apropriate
<linux/gpio/driver.h> include.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2016-04-05 15:09:09 +02:00
parent c663e5f567
commit cee1b40d96
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpio/gpio-tc3589x.c
View File

@ -10,10 +10,11 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/gpio/driver.h>
#include <linux/of.h>
#include <linux/interrupt.h>
#include <linux/mfd/tc3589x.h>
#include <linux/bitops.h>
/*
* These registers are modified under the irq bus lock and cached to avoid
@ -39,7 +40,7 @@ static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned offset)
struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(chip);
struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
u8 mask = 1 << (offset % 8);
u8 mask = BIT(offset % 8);
int ret;
ret = tc3589x_reg_read(tc3589x, reg);
@ -55,7 +56,7 @@ static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
unsigned pos = offset % 8;
u8 data[] = {!!val << pos, 1 << pos};
u8 data[] = {val ? BIT(pos) : 0, BIT(pos)};
tc3589x_block_write(tc3589x, reg, ARRAY_SIZE(data), data);
}
@ -70,7 +71,7 @@ static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
tc3589x_gpio_set(chip, offset, val);
return tc3589x_set_bits(tc3589x, reg, 1 << pos, 1 << pos);
return tc3589x_set_bits(tc3589x, reg, BIT(pos), BIT(pos));
}
static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
@ -81,7 +82,7 @@ static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
u8 reg = TC3589x_GPIODIR0 + offset / 8;
unsigned pos = offset % 8;
return tc3589x_set_bits(tc3589x, reg, 1 << pos, 0);
return tc3589x_set_bits(tc3589x, reg, BIT(pos), 0);
}
static struct gpio_chip template_chip = {
@ -100,7 +101,7 @@ static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
int mask = BIT(offset % 8);
if (type == IRQ_TYPE_EDGE_BOTH) {
tc3589x_gpio->regs[REG_IBE][regoffset] |= mask;
@ -165,7 +166,7 @@ static void tc3589x_gpio_irq_mask(struct irq_data *d)
struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
int mask = BIT(offset % 8);
tc3589x_gpio->regs[REG_IE][regoffset] &= ~mask;
}
@ -176,7 +177,7 @@ static void tc3589x_gpio_irq_unmask(struct irq_data *d)
struct tc3589x_gpio *tc3589x_gpio = gpiochip_get_data(gc);
int offset = d->hwirq;
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
int mask = BIT(offset % 8);
tc3589x_gpio->regs[REG_IE][regoffset] |= mask;
}