diff options
| author | Haibo Chen <haibo.chen@nxp.com> | 2024-08-01 17:30:28 +0800 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-08-05 11:49:54 +0200 |
| commit | 26b95b7b588d70b5075b597ff808543503d36ac6 (patch) | |
| tree | 9fce33b8534ca40ef1a0f0d7f80d1372d6e175cd /drivers/gpio/gpio-vf610.c | |
| parent | 3e7ebf271f935a316e9593d63f495498cde22f80 (diff) | |
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 <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/20240801093028.732338-3-haibo.chen@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-vf610.c')
| -rw-r--r-- | drivers/gpio/gpio-vf610.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index db68d8541597..27eff741fe9a 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++) |