Commit 66e57192 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Linus Walleij
Browse files

gpio: pca953x: Introduce a long awaited ->get_direction() 



Introduce ->get_direction() callback for the driver.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
[Removed use of GPIOF_DIR* flags]
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent d2cabc4a

drivers/gpio/gpio-pca953x.c

+16 −0
Original line number Diff line number Diff line
@@ -363,6 +363,21 @@ static void pca953x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val) 
	mutex_unlock(&chip->i2c_lock);

}



static int pca953x_gpio_get_direction(struct gpio_chip *gc, unsigned off)

{

	struct pca953x_chip *chip = gpiochip_get_data(gc);

	u32 reg_val;

	int ret;



	mutex_lock(&chip->i2c_lock);

	ret = pca953x_read_single(chip, chip->regs->direction, &reg_val, off);

	mutex_unlock(&chip->i2c_lock);

	if (ret < 0)

		return ret;



	return !!(reg_val & (1u << (off % BANK_SZ)));

}



static void pca953x_gpio_set_multiple(struct gpio_chip *gc,

				      unsigned long *mask, unsigned long *bits)

{
@@ -408,6 +423,7 @@ static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios) 
	gc->direction_output = pca953x_gpio_direction_output;

	gc->get = pca953x_gpio_get_value;

	gc->set = pca953x_gpio_set_value;

	gc->get_direction = pca953x_gpio_get_direction;

	gc->set_multiple = pca953x_gpio_set_multiple;

	gc->can_sleep = true;