From patchwork Mon Sep 26 08:44:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Yongjun X-Patchwork-Id: 609414 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 A38B7C32771 for ; Mon, 26 Sep 2022 08:27:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234242AbiIZI1d (ORCPT ); Mon, 26 Sep 2022 04:27:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234187AbiIZI12 (ORCPT ); Mon, 26 Sep 2022 04:27:28 -0400 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F65636DEA; Mon, 26 Sep 2022 01:27:24 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.153]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4MbbRM1qnWz6R5Gc; Mon, 26 Sep 2022 16:25:19 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.102.38]) by APP4 (Coremail) with SMTP id gCh0CgAHf45oYjFjX1aNBQ--.36343S4; Mon, 26 Sep 2022 16:27:21 +0800 (CST) From: Wei Yongjun To: Bartosz Golaszewski , Thomas Gleixner , Linus Walleij Cc: Wei Yongjun , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/3] allow gpio simulator be used as interrupt controller Date: Mon, 26 Sep 2022 08:44:25 +0000 Message-Id: <20220926084428.1792815-1-weiyongjun@huaweicloud.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CM-TRANSID: gCh0CgAHf45oYjFjX1aNBQ--.36343S4 X-Coremail-Antispam: 1UD129KBjvJXoW7ZFWDCr17Cw4Utw47AF4ruFg_yoW8AryfpF W3Cr4fJr1vqF13Ar9xtFy8Cr9Ivrn8Jrn8Gwn2kF48Gr1xCFyUXrW7tryrXryUJrW7Xw4U ZrWFyF18Gryqyr7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUgKb4IE77IF4wAFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6r1S6rWUM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4 vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7Cj xVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x 0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG 6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFV Cjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCj c4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4 CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1x MIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_WFyUJV Cq3wCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r1j6r4UYxBI daVFxhVjvjDU0xZFpf9x07UWE__UUUUU= X-CM-SenderInfo: 5zhl50pqjm3046kxt4xhlfz01xgou0bp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Wei Yongjun This series allow gpio simulator be used as interrupt controller, the use case is mockup some device which using GPIO as interrupt controller, such as mcp2515 CAN device. With the dts [1], we can mockup a mcp2515 device, and trigger irq by following commands: $ echo pull-down > /sys/bus/gpio/devices/gpiochip0/sim_gpio0/pull $ echo pull-up > /sys/bus/gpio/devices/gpiochip0/sim_gpio0/pull v1 -> v2: - add use case to gpio-sim.rst --[1]--------------------------------------------------------- /dts-v1/; #include / { clk24m: clk24m { compatible = "fixed-clock"; clock-output-names = "clk24m"; clock-frequency = <24000000>; #clock-cells = <0>; }; gpio-sim { compatible = "gpio-simulator"; bank0: bank0 { gpio-controller; #gpio-cells = <2>; ngpios = <16>; interrupt-controller; #interrupt-cells = <2>; line_b-hog { gpio-hog; gpios = <0 1>; input; line-name = "irq-sim"; }; }; }; spi: spi { compatible = "spi-mockup"; #address-cells = <1>; #size-cells = <0>; can0: can@1 { compatible = "microchip,mcp2515"; reg = <1>; clocks = <&clk24m>; interrupt-parent = <&bank0>; interrupts = <0 IRQ_TYPE_EDGE_BOTH>; }; }; }; ------------------------------><----------------------------- Wei Yongjun (3): genirq/irq_sim: Allow both one and two cell bindings gpio: sim: make gpio simulator can be used as interrupt controller gpio: sim: document use case for interrupt controller Documentation/admin-guide/gpio/gpio-sim.rst | 44 +++++++++++++++++++++ drivers/gpio/gpio-sim.c | 2 +- kernel/irq/irq_sim.c | 1 + 3 files changed, 46 insertions(+), 1 deletion(-)