diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-04-05 15:09:09 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-04-05 16:58:38 +0200 |
| commit | cee1b40d96f1b49e9a1b38e2d57d37a2c20ced31 (patch) | |
| tree | 7a2df2fac4ce057a3fd6c6ca2cf48b5f402496ac | |
| parent | gpio: support native single-ended hardware drivers (diff) | |
| download | linux-cee1b40d96f1b49e9a1b38e2d57d37a2c20ced31.tar.xz linux-cee1b40d96f1b49e9a1b38e2d57d37a2c20ced31.zip | |
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>
| -rw-r--r-- | drivers/gpio/gpio-tc3589x.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/gpio/gpio-tc3589x.c b/drivers/gpio/gpio-tc3589x.c index 4f566e6b81f1..2845653f394a 100644 --- a/drivers/gpio/gpio-tc3589x.c +++ b/drivers/gpio/gpio-tc3589x.c @@ -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; } |