From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Philipp Zabel <p.zabel@pengutronix.de>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Phil Edworthy <phil.edworthy@renesas.com>,
Biju Das <biju.das.jz@bp.renesas.com>
Subject: Re: [PATCH v3 4/5] gpio: gpiolib: Add ngirq member to struct gpio_irq_chip
Date: Wed, 18 May 2022 19:36:28 +0100 [thread overview]
Message-ID: <CA+V-a8v_bCtoipKXyYoHsSku0-AbABi6Wj0RsHrj7_Sk4MUJyg@mail.gmail.com> (raw)
In-Reply-To: <CACRpkdYQAsam_v0XHm-A_trbyifj1pBQq5N+zc9KVw1vXVTYUw@mail.gmail.com>
Hi Linus,
Thank you for the review.
On Fri, May 13, 2022 at 9:47 PM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> On Wed, May 11, 2022 at 8:32 PM Lad Prabhakar
> <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote:
>
> > Supported GPIO IRQs by the chip is not always equal to the number of GPIO
> > pins. For example on Renesas RZ/G2L SoC where it has GPIO0-122 pins but at
> > a give point a maximum of only 32 GPIO pins can be used as IRQ lines in
> > the IRQC domain.
> >
> > This patch adds ngirq member to struct gpio_irq_chip and passes this as a
> > size to irq_domain_create_hierarchy()/irq_domain_create_simple() if it is
> > being set in the driver otherwise fallbacks to using ngpio.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> As Geert says, I think you can just use .valid_mask for this,
> what do you say?
>
I don't think Geert is suggesting that. The .valid_mask option is one
time setting but what I need is something dynamic i.e. out of 392 GPIO
pins any 32 can be used as an interrupt pin. Also with this patch we
also save on memory [0].
[0] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/kernel/irq/irqdomain.c?h=next-20220518#n153
Cheers,
Prabhakar
next prev parent reply other threads:[~2022-05-18 18:36 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-11 18:32 [PATCH v3 0/5] Renesas RZ/G2L IRQC support Lad Prabhakar
2022-05-11 18:32 ` [PATCH v3 1/5] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller Lad Prabhakar
2022-05-12 6:14 ` Biju Das
2022-05-12 6:43 ` Geert Uytterhoeven
2022-05-12 17:58 ` Lad, Prabhakar
2022-05-11 18:32 ` [PATCH v3 2/5] irqchip: Add RZ/G2L IA55 Interrupt Controller driver Lad Prabhakar
2022-05-11 19:25 ` Biju Das
2022-05-12 18:01 ` Lad, Prabhakar
2022-05-12 7:05 ` Geert Uytterhoeven
2022-05-12 7:23 ` Marc Zyngier
2022-05-12 7:26 ` Geert Uytterhoeven
2022-05-12 18:08 ` Lad, Prabhakar
2022-05-11 18:32 ` [PATCH v3 3/5] gpio: gpiolib: Allow free() callback to be overridden Lad Prabhakar
2022-05-12 7:06 ` Geert Uytterhoeven
2022-05-12 11:19 ` Marc Zyngier
2022-05-12 12:48 ` Lad, Prabhakar
2022-05-12 13:24 ` Marc Zyngier
2022-05-12 13:50 ` Lad, Prabhakar
2022-05-12 16:26 ` Marc Zyngier
2022-05-12 17:55 ` Lad, Prabhakar
2022-05-12 22:24 ` Marc Zyngier
2022-05-11 18:32 ` [PATCH v3 4/5] gpio: gpiolib: Add ngirq member to struct gpio_irq_chip Lad Prabhakar
2022-05-12 7:29 ` Geert Uytterhoeven
2022-05-18 18:30 ` Lad, Prabhakar
2022-05-13 20:47 ` Linus Walleij
2022-05-18 18:36 ` Lad, Prabhakar [this message]
2022-05-19 13:21 ` Linus Walleij
2022-05-11 18:32 ` [PATCH v3 5/5] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt Lad Prabhakar
2022-05-12 5:35 ` Biju Das
2022-05-12 17:43 ` Lad, Prabhakar
2022-05-12 17:59 ` Biju Das
2022-05-13 6:12 ` Biju Das
2022-05-13 13:42 ` Lad, Prabhakar
2022-05-12 7:39 ` Geert Uytterhoeven
2022-05-12 17:36 ` Lad, Prabhakar
2022-05-13 6:53 ` Geert Uytterhoeven
2022-05-13 13:55 ` Lad, Prabhakar
2022-05-13 14:29 ` Geert Uytterhoeven
2022-05-13 18:13 ` Lad, Prabhakar
2022-05-15 5:13 ` Biju Das
[not found] ` <87pmkfm0v3.wl-maz@kernel.org>
2022-05-16 7:20 ` Biju Das
[not found] ` <87pmkd6gda.wl-maz@kernel.org>
2022-05-16 8:33 ` Biju Das
[not found] ` <87o7zx6ckp.wl-maz@kernel.org>
2022-05-16 9:56 ` Biju Das
2022-05-16 7:13 ` Geert Uytterhoeven
2022-05-18 19:04 ` Lad, Prabhakar
2022-05-12 11:15 ` Marc Zyngier
2022-05-12 17:46 ` Lad, Prabhakar
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