gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag

DSET/DCLR registers only works on output pins. Add corresponding
BGPIOF_NO_SET_ON_INPUT flag to bgpio_init call to fix direction_out
behavior.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Tested-by: René van Dorst <opensource@vdorst.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c
index b992321..82fb20d 100644 (file)
--- a/drivers/gpio/gpio-mt7621.c
+++ b/drivers/gpio/gpio-mt7621.c
@@ -227,8 +227,8 @@ mediatek_gpio_bank_probe(struct device *dev,
        ctrl = mtk->base + GPIO_REG_DCLR + (rg->bank * GPIO_BANK_STRIDE);
        diro = mtk->base + GPIO_REG_CTRL + (rg->bank * GPIO_BANK_STRIDE);
 
-       ret = bgpio_init(&rg->chip, dev, 4,
-                        dat, set, ctrl, diro, NULL, 0);
+       ret = bgpio_init(&rg->chip, dev, 4, dat, set, ctrl, diro, NULL,
+                        BGPIOF_NO_SET_ON_INPUT);
        if (ret) {
                dev_err(dev, "bgpio_init() failed\n");
                return ret;