From: Quentin Schulz quentin.schulz@theobroma-systems.com

Before the split of gpio and pinctrl sections in their own driver, rockchip_set_mux was called in pinmux_ops.gpio_set_direction for configuring a pin in its GPIO function.

This is essential for cases where pinctrl is "bypassed" by gpio consumers otherwise the GPIO function is not configured for the pin and it does not work. Such was the case for the sysfs/libgpiod userspace GPIO handling.

Let's call pinctrl_gpio_direction_input/output when setting the direction of a GPIO so that the pinctrl core requests from the rockchip pinctrl driver to put the pin in its GPIO function.

Fixes: 9ce9a02039de ("pinctrl/rockchip: drop the gpio related codes") Fixes: 936ee2675eee ("gpio/rockchip: add driver for rockchip gpio") Cc: stable@vger.kernel.org Reviewed-by: Heiko Stuebner heiko@sntech.de Signed-off-by: Quentin Schulz quentin.schulz@theobroma-systems.com ---

v2: - added Reviewed-by, - added missing linux/pinctrl/consumer.h header,

drivers/gpio/gpio-rockchip.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index bb50335239ac8..9c976ad7208ef 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -19,6 +19,7 @@ #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/of_irq.h> +#include <linux/pinctrl/consumer.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/regmap.h>

@@ -156,6 +157,12 @@ static int rockchip_gpio_set_direction(struct gpio_chip *chip, unsigned long flags; u32 data = input ? 0 : 1;

+ + if (input) + pinctrl_gpio_direction_input(bank->pin_base + offset); + else + pinctrl_gpio_direction_output(bank->pin_base + offset); + raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, offset, data, bank->gpio_regs->port_ddr); raw_spin_unlock_irqrestore(&bank->slock, flags);