From: Haibo Chen haibo.chen@nxp.com
[ Upstream commit 9bf3ac466faa83d51a8fe9212131701e58fdef74 ]
For gpio controller contain register PDDR, when set one target bit, current logic will clear all other bits, this is wrong. Use operator '|=' to fix it.
Fixes: 659d8a62311f ("gpio: vf610: add imx7ulp support") Reviewed-by: Peng Fan peng.fan@nxp.com Signed-off-by: Haibo Chen haibo.chen@nxp.com Signed-off-by: Bartosz Golaszewski brgl@bgdev.pl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpio/gpio-vf610.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index 3210fba16a9b..91d6966c3d29 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -135,9 +135,13 @@ static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, { struct vf610_gpio_port *port = gpiochip_get_data(chip); unsigned long mask = BIT(gpio); + u32 val;
- if (port->sdata && port->sdata->have_paddr) - vf610_gpio_writel(mask, port->gpio_base + GPIO_PDDR); + if (port->sdata && port->sdata->have_paddr) { + val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR); + val |= mask; + vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR); + }
vf610_gpio_set(chip, gpio, value);