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>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Philipp Zabel <p.zabel@pengutronix.de>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-gpio@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: [RFC PATCH v4 0/5] Renesas RZ/G2L IRQC support
Date: Thu, 17 Mar 2022 01:23:59 +0000 [thread overview]
Message-ID: <20220317012404.8069-1-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)
Hi All,
The RZ/G2L Interrupt Controller is a front-end for the GIC found on
Renesas RZ/G2L SoC's with below pins:
- IRQ sense select for 8 external interrupts, mapped to 8 GIC SPI interrupts
- GPIO pins used as external interrupt input pins out of GPIOINT0-122 a
maximum of only 32 can be mapped to 32 GIC SPI interrupts,
- NMI edge select.
_____________
| GIC |
| ________ |
____________ | | | |
NMI ------------------------------------>| | SPI0-479 | | GIC-600| |
_______ | |------------>| | |
| | | | PPI16-31 | | | |
| | IRQ0-IRQ7 | IRQC |------------>| | |
P0_P48_4 ------>| GPIO |---------------->| | | |________| |
| |GPIOINT0-122 | | | |
| |---------------->| TINT0-31 | | |
|______| |__________| |____________|
The proposed RFC patches adds hierarchical IRQ domain one in IRQC driver and other in
pinctrl driver. Upon interrupt requests map the interrupt to GIC. Out of GPIOINT0-122
only 32 can be mapped to GIC SPI, this mapping is handled by the pinctrl and IRQC driver.
Cheers,
Prabhakar
Changes for v4:
* Used locking while RMW
* Now using interrupts property instead of interrupt-map
* Patch series depends on [0]
* Updated binding doc
* Fixed comments pointed by Andy
[0] https://patchwork.kernel.org/project/linux-renesas-soc/patch/
20220316200633.28974-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
Changes for v3:
-> Re-structured the driver as a hierarchical irq domain instead of chained
-> made use of IRQCHIP_* macros
-> dropped locking
-> Added support for IRQ0-7 interrupts
-> Introduced 2 new patches for GPIOLIB
-> Switched to using GPIOLIB for irqdomains in pinctrl
RFC v3: https://patchwork.kernel.org/project/linux-renesas-soc/cover/
20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
RFC v2: https://patchwork.kernel.org/project/linux-renesas-soc/cover/
20210921193028.13099-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
RFC v1: https://patchwork.kernel.org/project/linux-renesas-soc/cover/
20210803175109.1729-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
Lad Prabhakar (5):
dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt
Controller
irqchip: Add RZ/G2L IA55 Interrupt Controller driver
gpio: gpiolib: Allow free() callback to be overridden
gpio: gpiolib: Add ngirq member to struct gpio_irq_chip
pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO
interrupt
.../renesas,rzg2l-irqc.yaml | 131 +++++
drivers/gpio/gpiolib.c | 13 +-
drivers/irqchip/Kconfig | 8 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-renesas-rzg2l.c | 462 ++++++++++++++++++
drivers/pinctrl/renesas/pinctrl-rzg2l.c | 205 ++++++++
include/linux/gpio/driver.h | 8 +
7 files changed, 823 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
create mode 100644 drivers/irqchip/irq-renesas-rzg2l.c
--
2.17.1
next reply other threads:[~2022-03-17 1:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-17 1:23 Lad Prabhakar [this message]
2022-03-17 1:24 ` [RFC PATCH v4 1/5] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller Lad Prabhakar
2022-03-17 9:44 ` Krzysztof Kozlowski
2022-03-17 11:55 ` Lad, Prabhakar
2022-03-17 13:34 ` Krzysztof Kozlowski
2022-03-17 1:24 ` [RFC PATCH v4 2/5] irqchip: Add RZ/G2L IA55 Interrupt Controller driver Lad Prabhakar
2022-03-17 16:13 ` Marc Zyngier
2022-03-18 14:59 ` Lad, Prabhakar
2022-03-18 17:44 ` Marc Zyngier
2022-03-17 1:24 ` [RFC PATCH v4 3/5] gpio: gpiolib: Allow free() callback to be overridden Lad Prabhakar
2022-03-18 15:15 ` Lad, Prabhakar
2022-03-17 1:24 ` [RFC PATCH v4 4/5] gpio: gpiolib: Add ngirq member to struct gpio_irq_chip Lad Prabhakar
2022-03-17 1:24 ` [RFC PATCH v4 5/5] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt Lad Prabhakar
2022-03-17 8:46 ` [RFC PATCH v4 0/5] Renesas RZ/G2L IRQC support Andy Shevchenko
2022-03-17 9:23 ` Marc Zyngier
2022-03-17 11:59 ` Lad, Prabhakar
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