linux-kernel - Re: [PATCH v2 2/2] pinctrl: stm32: Add level interrupt support to gpio irq chip

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Date:   Tue, 18 Feb 2020 18:51:44 +0100
From:   Marek Vasut <marex@...x.de>
To:     Alexandre Torgue <alexandre.torgue@...com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org
Subject: Re: [PATCH v2 2/2] pinctrl: stm32: Add level interrupt support to
 gpio irq chip

On 2/18/20 2:12 PM, Alexandre Torgue wrote:
> This patch adds level interrupt support to gpio irq chip.
> 
> GPIO hardware block is directly linked to EXTI block but EXTI handles
> external interrupts only on edge. To be able to handle GPIO interrupt on
> level a "hack" is done in gpio irq chip: parent interrupt (exti irq chip)
> is retriggered following interrupt type and gpio line value.
> 
> Signed-off-by: Alexandre Torgue <alexandre.torgue@...com>
> Tested-by: Marek Vasut <marex@...x.de>

Reviewed-by: Marek Vasut <marex@...x.de>
(and I tested the previous version on STM32MP1)