diff options
Diffstat (limited to 'drivers/tty/serial/max310x.c')
| -rw-r--r-- | drivers/tty/serial/max310x.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index e28e3065c99d..5fe12577ce8b 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -18,7 +18,6 @@ #include <linux/i2c.h> #include <linux/kconfig.h> #include <linux/module.h> -#include <linux/mod_devicetable.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/serial_core.h> @@ -1244,6 +1243,17 @@ static int max310x_gpio_set(struct gpio_chip *chip, unsigned int offset, return 0; } +static int max310x_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) +{ + struct max310x_port *s = gpiochip_get_data(chip); + struct uart_port *port = &s->p[offset / 4].port; + unsigned int val; + + val = max310x_port_read(port, MAX310X_GPIOCFG_REG); + + return val & BIT(offset % 4) ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN; +} + static int max310x_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) { struct max310x_port *s = gpiochip_get_data(chip); @@ -1447,6 +1457,7 @@ static int max310x_probe(struct device *dev, const struct max310x_devtype *devty s->gpio.owner = THIS_MODULE; s->gpio.parent = dev; s->gpio.label = devtype->name; + s->gpio.get_direction = max310x_gpio_get_direction; s->gpio.direction_input = max310x_gpio_direction_input; s->gpio.get = max310x_gpio_get; s->gpio.direction_output= max310x_gpio_direction_output; |