Re: [PATCH] gpio: pl061: Pass irqchip when adding gpiochip

[Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>]

On Tue, Jun 25, 2019 at 01:18:24PM +0200, Linus Walleij wrote:
> We need to convert all old gpio irqchips to pass the irqchip
> setup along when adding the gpio_chip.
> 
> For chained irqchips this is a pretty straight-forward
> conversion.
> 
> Cc: Sudeep Holla <sudeep.holla@arm.com>
> Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Looks good to me!

Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

Thanks,
Mani

> ---
>  drivers/gpio/gpio-pl061.c | 30 ++++++++++++++++--------------
>  1 file changed, 16 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
> index dc42571e6fdc..84af248f5172 100644
> --- a/drivers/gpio/gpio-pl061.c
> +++ b/drivers/gpio/gpio-pl061.c
> @@ -286,6 +286,7 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
>  {
>  	struct device *dev = &adev->dev;
>  	struct pl061 *pl061;
> +	struct gpio_irq_chip *girq;
>  	int ret, irq;
>  
>  	pl061 = devm_kzalloc(dev, sizeof(*pl061), GFP_KERNEL);
> @@ -313,10 +314,6 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
>  	pl061->gc.parent = dev;
>  	pl061->gc.owner = THIS_MODULE;
>  
> -	ret = gpiochip_add_data(&pl061->gc, pl061);
> -	if (ret)
> -		return ret;
> -
>  	/*
>  	 * irq_chip support
>  	 */
> @@ -335,19 +332,24 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id)
>  	}
>  	pl061->parent_irq = irq;
>  
> -	ret = gpiochip_irqchip_add(&pl061->gc, &pl061->irq_chip,
> -				   0, handle_bad_irq,
> -				   IRQ_TYPE_NONE);
> -	if (ret) {
> -		dev_info(&adev->dev, "could not add irqchip\n");
> +	girq = &pl061->gc.irq;
> +	girq->chip = &pl061->irq_chip;
> +	girq->parent_handler = pl061_irq_handler;
> +	girq->num_parents = 1;
> +	girq->parents = devm_kcalloc(dev, 1, sizeof(*girq->parents),
> +				     GFP_KERNEL);
> +	if (!girq->parents)
> +		return -ENOMEM;
> +	girq->parents[0] = irq;
> +	girq->default_type = IRQ_TYPE_NONE;
> +	girq->handler = handle_bad_irq;
> +
> +	ret = devm_gpiochip_add_data(dev, &pl061->gc, pl061);
> +	if (ret)
>  		return ret;
> -	}
> -	gpiochip_set_chained_irqchip(&pl061->gc, &pl061->irq_chip,
> -				     irq, pl061_irq_handler);
>  
>  	amba_set_drvdata(adev, pl061);
> -	dev_info(&adev->dev, "PL061 GPIO chip @%pa registered\n",
> -		 &adev->res.start);
> +	dev_info(dev, "PL061 GPIO chip %s registered\n", dev_name(dev));
>  
>  	return 0;
>  }
> -- 
> 2.20.1
>