From: Haibo Chen Date: Thu, 1 Aug 2024 09:30:28 +0000 (+0800) Subject: gpio: vf610: add get_direction() support X-Git-Tag: v6.12-rc1~156^2~49 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=26b95b7b588d70b5075b597ff808543503d36ac6;p=thirdparty%2Fkernel%2Flinux.git gpio: vf610: add get_direction() support For IP which do not contain PDDR, currently use the pinmux API pinctrl_gpio_direction_input() to config the output/input, pinmux currently do not support get_direction(). So here add the GPIO get_direction() support only for the IP which has Port Data Direction Register (PDDR). Signed-off-by: Haibo Chen Link: https://lore.kernel.org/r/20240801093028.732338-3-haibo.chen@nxp.com Signed-off-by: Bartosz Golaszewski --- diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index db68d85415970..27eff741fe9a2 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -151,6 +151,19 @@ static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned int gpio return pinctrl_gpio_direction_output(chip, gpio); } +static int vf610_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio) +{ + struct vf610_gpio_port *port = gpiochip_get_data(gc); + u32 mask = BIT(gpio); + + mask &= vf610_gpio_readl(port->gpio_base + GPIO_PDDR); + + if (mask) + return GPIO_LINE_DIRECTION_OUT; + + return GPIO_LINE_DIRECTION_IN; +} + static void vf610_gpio_irq_handler(struct irq_desc *desc) { struct vf610_gpio_port *port = @@ -362,6 +375,12 @@ static int vf610_gpio_probe(struct platform_device *pdev) gc->get = vf610_gpio_get; gc->direction_output = vf610_gpio_direction_output; gc->set = vf610_gpio_set; + /* + * only IP has Port Data Direction Register(PDDR) can + * support get direction + */ + if (port->sdata->have_paddr) + gc->get_direction = vf610_gpio_get_direction; /* Mask all GPIO interrupts */ for (i = 0; i < gc->ngpio; i++)