Re: [PATCH v4 07/10] gpio: max7360: Add MAX7360 gpio support
From: Mathieu Dubois-Briand
Date: Fri Feb 14 2025 - 06:55:01 EST
On Fri Feb 14, 2025 at 12:49 PM CET, Mathieu Dubois-Briand wrote:
> Add driver for Maxim Integrated MAX7360 GPIO/GPO controller.
>
> Two sets of GPIOs are provided by the device:
> - Up to 8 GPIOs, shared with the PWM and rotary encoder functionalities.
> These GPIOs also provide interrupts on input changes.
> - Up to 6 GPOs, on unused keypad columns pins.
>
> Co-developed-by: Kamel Bouhara <kamel.bouhara@xxxxxxxxxxx>
> Signed-off-by: Kamel Bouhara <kamel.bouhara@xxxxxxxxxxx>
> Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@xxxxxxxxxxx>
> ---
...
> +static int max7360_gpio_probe(struct platform_device *pdev)
...
> + } else {
> + u32 ngpios;
> +
> + ret = device_property_read_u32(dev, "ngpios", &ngpios);
> + if (ret < 0) {
> + dev_err(dev, "Missing ngpios OF property\n");
> + return ret;
> + }
> +
> + gpio_config.reg_set_base = GPIO_REGMAP_ADDR(MAX7360_REG_PORTS);
> + gpio_config.reg_mask_xlate = max7360_gpo_reg_mask_xlate;
> + gpio_config.ngpio = ngpios;
The device_property_read_u32() and setting of gpio_config.ngpio here
will be removed, once the "gpio: regmap: Make use of 'ngpios' property"
series gets merged.
https://lore.kernel.org/linux-gpio/20250213195621.3133406-1-andriy.shevchenko@xxxxxxxxxxxxxxx/
--
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com