Signed-off-by: Mario Six mario.six@gdsys.cc --- drivers/gpio/mpc85xx_gpio.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+)
diff --git a/drivers/gpio/mpc85xx_gpio.c b/drivers/gpio/mpc85xx_gpio.c index 2289eb7..6e920e6 100644 --- a/drivers/gpio/mpc85xx_gpio.c +++ b/drivers/gpio/mpc85xx_gpio.c @@ -66,6 +66,25 @@ mpc85xx_gpio_set_high(struct ccsr_gpio *base, unsigned int gpios) setbits_be32(&base->gpdir, gpios); }
+static inline int +mpc85xx_gpio_open_drain_val(struct ccsr_gpio *base, unsigned int mask) +{ + /* Read the requested values */ + return in_be32(&base->gpodr) & mask; +} + +static inline void +mpc85xx_gpio_open_drain_on(struct ccsr_gpio *base, unsigned int gpios) +{ + setbits_be32(&base->gpodr, gpios); +} + +static inline void +mpc85xx_gpio_open_drain_off(struct ccsr_gpio *base, unsigned int gpios) +{ + clrbits_be32(&base->gpodr, gpios); +} + static int mpc85xx_gpio_direction_input(struct udevice *dev, unsigned int gpio) { struct mpc85xx_gpio_data *data = dev_get_priv(dev); @@ -75,6 +94,26 @@ static int mpc85xx_gpio_direction_input(struct udevice *dev, unsigned int gpio) }
static int +mpc85xx_gpio_get_open_drain(struct udevice *dev, unsigned gpio) +{ + struct mpc85xx_gpio_data *data = dev_get_priv(dev); + + return !!mpc85xx_gpio_open_drain_val(data->base, 1U << (31 - gpio)); +} + +static int +mpc85xx_gpio_set_open_drain(struct udevice *dev, unsigned gpio, int value) +{ + struct mpc85xx_gpio_data *data = dev_get_priv(dev); + + if (value) + mpc85xx_gpio_open_drain_on(data->base, 1U << (31 - gpio)); + else + mpc85xx_gpio_open_drain_off(data->base, 1U << (31 - gpio)); + return 0; +} + +static int mpc85xx_gpio_set_value(struct udevice *dev, unsigned gpio, int value) { struct mpc85xx_gpio_data *data = dev_get_priv(dev); @@ -163,6 +202,8 @@ static const struct dm_gpio_ops gpio_mpc85xx_ops = { .direction_output = mpc85xx_gpio_direction_output, .get_value = mpc85xx_gpio_get_value, .set_value = mpc85xx_gpio_set_value, + .get_open_drain = mpc85xx_gpio_get_open_drain, + .set_open_drain = mpc85xx_gpio_set_open_drain, .get_function = mpc85xx_gpio_get_function, };