From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Philipp Zabel <p.zabel@pengutronix.de>,
linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-renesas-soc@vger.kernel.org,
Prabhakar <prabhakar.csengg@gmail.com>,
Biju Das <biju.das.jz@bp.renesas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [PATCH v2 4/5] gpio: gpiolib: Add ngirq member to struct gpio_irq_chip
Date: Mon, 9 May 2022 06:09:52 +0100 [thread overview]
Message-ID: <20220509050953.11005-5-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
In-Reply-To: <20220509050953.11005-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
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>
---
drivers/gpio/gpiolib.c | 4 ++--
include/linux/gpio/driver.h | 8 ++++++++
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 7be01c70ee4e..4b402141580e 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1221,7 +1221,7 @@ static int gpiochip_hierarchy_add_domain(struct gpio_chip *gc)
gc->irq.domain = irq_domain_create_hierarchy(
gc->irq.parent_domain,
0,
- gc->ngpio,
+ gc->irq.ngirq ?: gc->ngpio,
gc->irq.fwnode,
&gc->irq.child_irq_domain_ops,
gc);
@@ -1574,7 +1574,7 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc,
} else {
/* Some drivers provide custom irqdomain ops */
gc->irq.domain = irq_domain_create_simple(fwnode,
- gc->ngpio,
+ gc->irq.ngirq ?: gc->ngpio,
gc->irq.first,
gc->irq.domain_ops ?: &gpiochip_domain_ops,
gc);
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 874aabd270c9..ed6df186907d 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -51,6 +51,14 @@ struct gpio_irq_chip {
*/
const struct irq_domain_ops *domain_ops;
+ /**
+ * @ngirq:
+ *
+ * The number of GPIO IRQ's handled by this IRQ domain; usually is
+ * equal to ngpio.
+ */
+ u16 ngirq;
+
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
/**
* @fwnode:
--
2.25.1
next prev parent reply other threads:[~2022-05-09 5:17 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-09 5:09 [PATCH v2 0/5] Renesas RZ/G2L IRQC support Lad Prabhakar
2022-05-09 5:09 ` [PATCH v2 1/5] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller Lad Prabhakar
2022-05-09 8:57 ` Geert Uytterhoeven
2022-05-09 5:09 ` [PATCH v2 2/5] irqchip: Add RZ/G2L IA55 Interrupt Controller driver Lad Prabhakar
2022-05-09 7:22 ` Biju Das
2022-05-09 7:35 ` Lad, Prabhakar
2022-05-09 7:41 ` Biju Das
2022-05-09 7:56 ` Biju Das
2022-05-09 9:10 ` Geert Uytterhoeven
2022-05-09 19:24 ` Lad, Prabhakar
2022-05-10 8:11 ` Geert Uytterhoeven
2022-05-09 5:09 ` [PATCH v2 3/5] gpio: gpiolib: Allow free() callback to be overridden Lad Prabhakar
2022-05-09 18:34 ` Sergei Shtylyov
2022-05-09 5:09 ` Lad Prabhakar [this message]
2022-05-13 22:12 ` [PATCH v2 4/5] gpio: gpiolib: Add ngirq member to struct gpio_irq_chip Linus Walleij
2022-05-18 15:03 ` Andy Shevchenko
2022-05-09 5:09 ` [PATCH v2 5/5] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt Lad Prabhakar
2022-05-09 6:49 ` Biju Das
2022-05-09 7:48 ` Lad, Prabhakar
2022-05-09 8:01 ` Biju Das
2022-05-09 19:26 ` Lad, Prabhakar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220509050953.11005-5-prabhakar.mahadev-lad.rj@bp.renesas.com \
--to=prabhakar.mahadev-lad.rj@bp.renesas.com \
--cc=biju.das.jz@bp.renesas.com \
--cc=brgl@bgdev.pl \
--cc=devicetree@vger.kernel.org \
--cc=geert+renesas@glider.be \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=linus.walleij@linaro.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=maz@kernel.org \
--cc=p.zabel@pengutronix.de \
--cc=prabhakar.csengg@gmail.com \
--cc=robh+dt@kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).