The PAT1 register contains information about the IRQ type (edge/level)
for input GPIOs with IRQ enabled, and the direction for non-IRQ GPIOs.
So it makes sense to read it only if the GPIO has no interrupt
configured, otherwise input GPIOs configured for level IRQs are
misdetected as output GPIOs.
Fixes: ebd6651418b6 ("pinctrl: ingenic: Implement .get_direction for GPIO chips")
Reported-by: João Henrique <johnnyonflame@xxxxxxxxxxx>
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20200622214548.265417-2-paul@xxxxxxxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
Notes:
Original git commit ID: 84e7a946da71f678affacea301f6d5cb4d9784e8
drivers/pinctrl/pinctrl-ingenic.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c
index 6e2683016c1f..bfa0c5b7ad04 100644
--- a/drivers/pinctrl/pinctrl-ingenic.c
+++ b/drivers/pinctrl/pinctrl-ingenic.c
@@ -1644,7 +1644,8 @@ static int ingenic_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
unsigned int pin = gc->base + offset;
if (jzpc->version >= ID_JZ4760)
- return ingenic_get_pin_config(jzpc, pin, JZ4760_GPIO_PAT1);
+ return ingenic_get_pin_config(jzpc, pin, JZ4760_GPIO_INT) ||
+ ingenic_get_pin_config(jzpc, pin, JZ4760_GPIO_PAT1);
if (ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_SELECT))
return true;
--
2.28.0
