linux-kernel - Re: [PATCH v6 3/3] pinctrl: nuvoton: Add ma35d1 pinctrl and GPIO driver

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Message-ID: <5c555723-1731-40cc-b9be-a88ef617e09f@moroto.mountain>
Date: Wed, 13 Mar 2024 11:04:30 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Jacky Huang <ychuang570808@...il.com>
Cc: linus.walleij@...aro.org, robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	p.zabel@...gutronix.de, j.neuschaefer@....net,
	linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	ychuang3@...oton.com, schung@...oton.com
Subject: Re: [PATCH v6 3/3] pinctrl: nuvoton: Add ma35d1 pinctrl and GPIO
 driver

On Wed, Mar 13, 2024 at 03:57:19AM +0000, Jacky Huang wrote:
> +static int ma35_gpiolib_register(struct platform_device *pdev, struct ma35_pinctrl *npctl)
> +{
> +	struct ma35_pin_ctrl *ctrl = npctl->ctrl;
> +	struct ma35_pin_bank *bank = ctrl->pin_banks;
> +	int ret;
> +	int i;
> +
> +	for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
> +		if (!bank->valid) {
> +			dev_warn(&pdev->dev, "bank %s is not valid\n",
> +				 bank->np->name);
> +			continue;
> +		}
> +		bank->irqtype = 0;
> +		bank->irqinten = 0;
> +		bank->chip.label = bank->name;
> +		bank->chip.of_gpio_n_cells = 2;
> +		bank->chip.parent = &pdev->dev;
> +		bank->chip.request = ma35_gpio_core_to_request;
> +		bank->chip.direction_input = ma35_gpio_core_direction_in;
> +		bank->chip.direction_output = ma35_gpio_core_direction_out;
> +		bank->chip.get = ma35_gpio_core_get;
> +		bank->chip.set = ma35_gpio_core_set;
> +		bank->chip.base = -1;
> +		bank->chip.ngpio = bank->nr_pins;
> +		bank->chip.can_sleep = false;
> +		spin_lock_init(&bank->lock);
> +
> +		if (bank->irq > 0) {
> +			struct gpio_irq_chip *girq;
> +
> +			girq = &bank->chip.irq;
> +			gpio_irq_chip_set_chip(girq, &ma35_gpio_irqchip);
> +			girq->parent_handler = ma35_irq_demux_intgroup;
> +			girq->num_parents = 1;
> +
> +			girq->parents = devm_kcalloc(&pdev->dev, 1, sizeof(*girq->parents),
> +						     GFP_KERNEL);
> +			if (!girq->parents)
> +				return -ENOMEM;

ret = -ENOMEM;
goto fail;

regards,
dan carpenter

> +
> +			girq->parents[0] = bank->irq;
> +			girq->default_type = IRQ_TYPE_NONE;
> +			girq->handler = handle_level_irq;
> +		}
> +
> +		ret = gpiochip_add_data(&bank->chip, bank);
> +		if (ret) {
> +			dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
> +				bank->chip.label, ret);
> +			goto fail;
> +		}
> +	}
> +	return 0;
> +
> +fail:
> +	for (--i, --bank; i >= 0; --i, --bank) {
> +		if (!bank->valid)
> +			continue;
> +		gpiochip_remove(&bank->chip);
> +	}
> +	return ret;
> +}