linux-kernel - Re: [PATCH v5 01/39] gpio: ep93xx: split device in multiple

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Date:   Wed, 22 Nov 2023 13:23:03 +0200
From:   Andy Shevchenko <andy@...nel.org>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Hartley Sweeten <hsweeten@...ionengravers.com>,
        Alexander Sverdlin <alexander.sverdlin@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Lukasz Majewski <lukma@...x.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v5 01/39] gpio: ep93xx: split device in multiple

On Wed, Nov 22, 2023 at 11:59:39AM +0300, Nikita Shubin wrote:
> Prepare ep93xx SOC gpio to convert into device tree driver:
> - dropped banks and legacy defines
> - split AB IRQ and make it shared
> 
> We are relying on IRQ number information A, B ports have single shared
> IRQ, while F port have dedicated IRQ for each line.
> 
> Also we had to split single ep93xx platform_device into multiple, one
> for each port, without this we can't do a full working transition from
> legacy platform code into device tree capable. All GPIO_LOOKUP were
> change to match new chip namings.

...

> @@ -335,9 +430,9 @@ static struct gpiod_lookup_table ep93xx_i2c_gpiod_table = {
>  	.dev_id		= "i2c-gpio.0",
>  	.table		= {
>  		/* Use local offsets on gpiochip/port "G" */
> -		GPIO_LOOKUP_IDX("G", 1, NULL, 0,
> +		GPIO_LOOKUP_IDX("gpio-ep93xx.6", 1, NULL, 0,
>  				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
> -		GPIO_LOOKUP_IDX("G", 0, NULL, 1,
> +		GPIO_LOOKUP_IDX("gpio-ep93xx.6", 0, NULL, 1,
>  				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
>  	},

Before doing this patch, please fix the bug, i.e. missing terminator entry here.
If elsewhere the same, fix all of them at once.

>  };

...

> +	gc->label = dev_name(&pdev->dev);
> +	if (platform_irq_count(pdev) > 0) {
> +		dev_dbg(&pdev->dev, "setting up irqs for %s\n", dev_name(&pdev->dev));
> +		ret = ep93xx_setup_irqs(pdev, egc);
> +		if (ret)
> +			dev_err_probe(&pdev->dev, ret, "setup irqs failed");

Non-fatal?

>  	}

...

This change LGTM (assuming the bug is fixed),
Reviewed-by: Andy Shevchenko <andy@...nel.org>

-- 
With Best Regards,
Andy Shevchenko