linux-kernel - Re: [PATCH 2/2] pinctrl: intel: Pass irqchip when adding gpiochip

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Message-ID: <20200109111343.GN32742@smile.fi.intel.com>
Date:   Thu, 9 Jan 2020 13:13:43 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>
Subject: Re: [PATCH 2/2] pinctrl: intel: Pass irqchip when adding gpiochip

On Thu, Jan 09, 2020 at 08:53:29AM +0100, Linus Walleij wrote:
> We need to convert all old gpio irqchips to pass the irqchip
> setup along when adding the gpio_chip. For more info see
> drivers/gpio/TODO.
> 
> For chained irqchips this is a pretty straight-forward conversion.
> 

Pushed to my review and testing queue, thanks!

> Cc: Hans de Goede <hdegoede@...hat.com>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> Please apply this to the Intel pinctrl tree when you are
> happy with the result!
> ---
>  drivers/pinctrl/intel/pinctrl-intel.c | 26 +++++++++++++-------------
>  1 file changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
> index b479bcf1e246..ffacd77861f7 100644
> --- a/drivers/pinctrl/intel/pinctrl-intel.c
> +++ b/drivers/pinctrl/intel/pinctrl-intel.c
> @@ -1224,6 +1224,7 @@ static unsigned int intel_gpio_ngpio(const struct intel_pinctrl *pctrl)
>  static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq)
>  {
>  	int ret;
> +	struct gpio_irq_chip *girq;
>  
>  	pctrl->chip = intel_gpio_chip;
>  
> @@ -1244,16 +1245,9 @@ static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq)
>  	pctrl->irqchip.irq_set_wake = intel_gpio_irq_wake;
>  	pctrl->irqchip.flags = IRQCHIP_MASK_ON_SUSPEND;
>  
> -	ret = devm_gpiochip_add_data(pctrl->dev, &pctrl->chip, pctrl);
> -	if (ret) {
> -		dev_err(pctrl->dev, "failed to register gpiochip\n");
> -		return ret;
> -	}
> -
>  	/*
> -	 * We need to request the interrupt here (instead of providing chip
> -	 * to the irq directly) because on some platforms several GPIO
> -	 * controllers share the same interrupt line.
> +	 * On some platforms several GPIO controllers share the same interrupt
> +	 * line.
>  	 */
>  	ret = devm_request_irq(pctrl->dev, irq, intel_gpio_irq,
>  			       IRQF_SHARED | IRQF_NO_THREAD,
> @@ -1263,14 +1257,20 @@ static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq)
>  		return ret;
>  	}
>  
> -	ret = gpiochip_irqchip_add(&pctrl->chip, &pctrl->irqchip, 0,
> -				   handle_bad_irq, IRQ_TYPE_NONE);
> +	girq = &pctrl->chip.irq;
> +	girq->chip = &pctrl->irqchip;
> +	/* This will let us handle the IRQ in the driver */
> +	girq->parent_handler = NULL;
> +	girq->num_parents = 0;
> +	girq->default_type = IRQ_TYPE_NONE;
> +	girq->handler = handle_bad_irq;
> +
> +	ret = devm_gpiochip_add_data(pctrl->dev, &pctrl->chip, pctrl);
>  	if (ret) {
> -		dev_err(pctrl->dev, "failed to add irqchip\n");
> +		dev_err(pctrl->dev, "failed to register gpiochip\n");
>  		return ret;
>  	}
>  
> -	gpiochip_set_chained_irqchip(&pctrl->chip, &pctrl->irqchip, irq, NULL);
>  	return 0;
>  }
>  
> -- 
> 2.23.0
> 

-- 
With Best Regards,
Andy Shevchenko