linux-kernel - Re: [PATCH v6 1/7] irq/irq_sim: add irq_set

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Date:   Tue, 19 Feb 2019 16:14:49 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v6 1/7] irq/irq_sim: add irq_set_type() callback

On Tue, 19 Feb 2019 17:06:44 +0100
Bartosz Golaszewski <brgl@...ev.pl> wrote:

> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> Implement the irq_set_type() callback and call irqd_set_trigger_type()
> internally so that users interested in the configured trigger type can
> later retrieve it using irqd_get_trigger_type(). We only support edge
> trigger types.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
>  kernel/irq/irq_sim.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
> index 98a20e1594ce..b992f88c5613 100644
> --- a/kernel/irq/irq_sim.c
> +++ b/kernel/irq/irq_sim.c
> @@ -25,10 +25,22 @@ static void irq_sim_irqunmask(struct irq_data *data)
>  	irq_ctx->enabled = true;
>  }
>  
> +static int irq_sim_set_type(struct irq_data *data, unsigned int type)
> +{
> +	/* We only support rising and falling edge trigger types. */
> +	if (type & ~IRQ_TYPE_EDGE_BOTH)
> +		return -EINVAL;
> +
> +	irqd_set_trigger_type(data, type);
> +
> +	return 0;
> +}
> +
>  static struct irq_chip irq_sim_irqchip = {
>  	.name		= "irq_sim",
>  	.irq_mask	= irq_sim_irqmask,
>  	.irq_unmask	= irq_sim_irqunmask,
> +	.irq_set_type	= irq_sim_set_type,
>  };
>  
>  static void irq_sim_handle_irq(struct irq_work *work)

Acked-by: Marc Zyngier <marc.zyngier@....com>

	M.
-- 
Without deviation from the norm, progress is not possible.