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Message-Id: <20240111131904.1491496-2-hector.palacios@digi.com> Date: Thu, 11 Jan 2024 14:19:03 +0100 From: Hector Palacios <hector.palacios@...i.com> To: bartosz.golaszewski@...aro.org, linus.walleij@...aro.org Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, haibo.chen@....com, peng.fan@....com, hector.palacios@...i.com Subject: [PATCH 1/2] gpio: vf610: add support to DT 'ngpios' property Default to hardcoded VF610_GPIO_PER_PORT (32 pins) but allow optional generic 'ngpios' property to be specified from the device tree. Signed-off-by: Hector Palacios <hector.palacios@...i.com> --- drivers/gpio/gpio-vf610.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index 07e5e6323e86..4abdf75e9a0a 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -276,6 +276,7 @@ static int vf610_gpio_probe(struct platform_device *pdev) struct vf610_gpio_port *port; struct gpio_chip *gc; struct gpio_irq_chip *girq; + u32 ngpios; int i; int ret; bool dual_base; @@ -353,7 +354,11 @@ static int vf610_gpio_probe(struct platform_device *pdev) gc = &port->gc; gc->parent = dev; gc->label = dev_name(dev); - gc->ngpio = VF610_GPIO_PER_PORT; + ret = device_property_read_u32(dev, "ngpios", &ngpios); + if (ret || ngpios > VF610_GPIO_PER_PORT) + gc->ngpio = VF610_GPIO_PER_PORT; + else + gc->ngpio = (u16)ngpios; gc->base = -1; gc->request = gpiochip_generic_request;
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