From patchwork Sun Jul 3 19:40:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lad, Prabhakar" X-Patchwork-Id: 1651684 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=SCYngpB2; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4LbfSJ1C3Wz9s2R for ; Mon, 4 Jul 2022 05:41:04 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231144AbiGCTk5 (ORCPT ); Sun, 3 Jul 2022 15:40:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229549AbiGCTk5 (ORCPT ); Sun, 3 Jul 2022 15:40:57 -0400 Received: from mail-pl1-x62b.google.com (mail-pl1-x62b.google.com [IPv6:2607:f8b0:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8FDDE2DF5; Sun, 3 Jul 2022 12:40:56 -0700 (PDT) Received: by mail-pl1-x62b.google.com with SMTP id l12so1493409plk.13; Sun, 03 Jul 2022 12:40:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=lAoaIRrd1I/n/Cuuoagyu6zAUL7znWkZoM3y7bdJxaE=; b=SCYngpB2DkzYud52C7EepURTDXeNb5P89mRRWjlt30i6qqPmb2RgS0Dl1SYG/F/TJj PdCpoq2KkX8RBh7qcZypNRpSUVSMJRLl+mJvt8nUVhdWZZtj2X+gzq6tMmUIGIKvjJF5 g5tyV9K4h46GsX93JlVdNNVGC0whi2dovTeCCFlJ4LvVF43sfB6oYJUBnooYAV+asAsX pq2xxcVdXszRV+wfeHstnfhBZRCP75KksS27WlQPnp2fRzmFxrs6AnRMbo+WWCMqaTL+ zlsI1eZYsYyJyZuPzJZ2x/qjegv6NcMpBWHMkqRjZOVmVy4ggSTUorXJUbQJwycjwiSi xZ/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=lAoaIRrd1I/n/Cuuoagyu6zAUL7znWkZoM3y7bdJxaE=; b=q0mGTZjvHcH67hyGT/EjKbtvzX/NeemAf8wDjFDpxk/rldr3aYyaEAEHfES4JNG8HK G+GQDCaIB+UDm0OijEVRuLAkH9xTk05yRO4vKz2j+ct+tA5XPXi/3rOxcQv5k1bbWOdu 4chFKKXIE1MwE/x1YJtt87Zau5libE79yCBcAw12dXcoez1+1/bV0Mj1INLkpecnuMvd sP7tCdXzcyO/wP+Yp2jpOEuCrG9+2QPCj56hIxg1kb6US9ElunoKopH8ASVaswCMB+Cf Gv26ZJofcTcRJMhwK8Wy2I0P9Ce3Tu2F0BMrTO0RAiUzLKKKIYWKguTqJI0X/U9NCv3P /iqA== X-Gm-Message-State: AJIora85P6nLtMdp4z8kWGUR2tlbRmf4L5H/PQ/fi7FF0BwITDhaZeB0 Ic7PoxBOioJX1Ulk3qnhhvWeuohRwVE= X-Google-Smtp-Source: AGRyM1sPiC7Kfi98iW4U80YQ4Kg/zMfwiOUu7ZPS0991iyDMATwtDOt+yZcCswNdEcBbPcVObq8mDg== X-Received: by 2002:a17:90b:388f:b0:1ed:3b:6c64 with SMTP id mu15-20020a17090b388f00b001ed003b6c64mr30416152pjb.34.1656877256000; Sun, 03 Jul 2022 12:40:56 -0700 (PDT) Received: from prasmi.domain.name ([103.219.60.86]) by smtp.gmail.com with ESMTPSA id y19-20020a17090aca9300b001e0c5da6a51sm10656104pjt.50.2022.07.03.12.40.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Jul 2022 12:40:55 -0700 (PDT) From: Lad Prabhakar X-Google-Original-From: Lad Prabhakar To: Marc Zyngier , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Geert Uytterhoeven , Linus Walleij , Bartosz Golaszewski , Philipp Zabel , devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar Subject: [PATCH v7 0/5] Renesas RZ/G2L IRQC support Date: Sun, 3 Jul 2022 20:40:15 +0100 Message-Id: <20220703194020.78701-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@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 v6->v7: * Used devm_reset_control_get_exclusive() instead of devm_reset_control_get_exclusive_by_index() * Included RB tag from Linus for patch 5/5 * Switched to newer version of populate_parent_alloc_arg() (patch depends on https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/ patch/?id=178b7e21459e9a7e2a2c369711ef0cc9b1cfbcd7) v5->v6: * Fixed review comments pointed by Marc * Included Ack from Rob v4->v5: * Updated commit message for patch 3/5 * Dropped interrupt-parent from and included RB tag from Geert for patch 4/5 * Implemented init_valid_mask() callback * Dropped ngirq patch from previous series * Dropped patches 4/7 and 5/7 from previous patch series will handle it separately. v3->v4: * Updated description for interrupts-cells property in patch #1 * Dropped the patch which overriding free callback in gpiolib * Used devm helpers in patch#2 * Patch #4, #5 and #6 are newly added * In patch #7 dropped using gpio offset as hwirq * Implemented immutable GPIO in patch #7 * Implemented child_offset_to_irq() callback in patch #7 v2->v3: * Updated description for interrupts-cells property in patch #1 * Included RB tag from Geert for binding patch * Fixed review comments pointed by Geert, Biju and Sergei. v1->v2: * Included RB tag from Rob * Fixed review comments pointed by Geert * included GPIO driver changes 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 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@xxxxxxxxxxxxxx/ 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@xxxxxxxxxxxxxx/ RFC v1: https://patchwork.kernel.org/project/linux-renesas-soc/cover/ 20210803175109.1729-1-prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx/ 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 dt-bindings: pinctrl: renesas,rzg2l-pinctrl: Document the properties to handle GPIO IRQ pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt .../renesas,rzg2l-irqc.yaml | 133 ++++++ .../pinctrl/renesas,rzg2l-pinctrl.yaml | 15 + drivers/gpio/gpiolib.c | 9 +- drivers/irqchip/Kconfig | 8 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-renesas-rzg2l.c | 393 ++++++++++++++++++ drivers/pinctrl/renesas/pinctrl-rzg2l.c | 233 +++++++++++ 7 files changed, 789 insertions(+), 3 deletions(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml create mode 100644 drivers/irqchip/irq-renesas-rzg2l.c