From patchwork Mon May 9 05:09:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 12843047 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5593CC43219 for ; Mon, 9 May 2022 05:19:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232579AbiEIFVp (ORCPT ); Mon, 9 May 2022 01:21:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231476AbiEIFOR (ORCPT ); Mon, 9 May 2022 01:14:17 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0DB4513FD67; Sun, 8 May 2022 22:10:21 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.91,210,1647270000"; d="scan'208";a="120333377" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 09 May 2022 14:10:19 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 5FCAB40041A0; Mon, 9 May 2022 14:10:15 +0900 (JST) From: Lad Prabhakar To: Thomas Gleixner , Marc Zyngier , Rob Herring , Krzysztof Kozlowski , Linus Walleij , Bartosz Golaszewski , Geert Uytterhoeven , Philipp Zabel , linux-gpio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [PATCH v2 0/5] Renesas RZ/G2L IRQC support Date: Mon, 9 May 2022 06:09:48 +0100 Message-Id: <20220509050953.11005-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org 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 patches add hierarchical IRQ domain, one in IRQC driver and another 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 v1->v2: * Included RB tag from Rob * Fixed review comments pointed by Geert * included GPIO driver changes Changes for RFCV4 -> V1: * Used unevaluatedProperties. * Altered the sequence of reg property * Set the parent type * Used raw_spin_lock() instead of raw_spin_lock_irqsave() * Simplified parsing IRQ map. * Will send the GPIO and pinctrl changes as part of separate series Changes for RFC 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 RFC 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 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 | 445 ++++++++++++++++++ drivers/pinctrl/renesas/pinctrl-rzg2l.c | 205 ++++++++ include/linux/gpio/driver.h | 8 + 7 files changed, 806 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml create mode 100644 drivers/irqchip/irq-renesas-rzg2l.c