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gpio: mxc: Always set GPIOs used as interrupt source to INPUT mode 

[ Upstream commit 8e88a0feeb ]

Always configure GPIO pins which are used as interrupt source as INPUTs.
In case the default pin configuration is OUTPUT, or the prior stage does
configure the pins as OUTPUT, then Linux will not reconfigure the pin as
INPUT and no interrupts are received.

Always configure the interrupt source GPIO pin as input to fix the above case.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Fixes: 07bd1a6cc7 ("MXC arch: Add gpio support for the whole platform")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marek Vasut 2023-01-16 10:49:57 +01:00 committed by Greg Kroah-Hartman
parent 613020d048
commit 1af8071bd0
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-mxc.c
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@ -231,7 +231,7 @@ static int gpio_set_irq_type(struct irq_data *d, u32 type)
writel(1 << gpio_idx, port->base + GPIO_ISR);
return 0;
return port->gc.direction_input(&port->gc, gpio_idx);
}
static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)