From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03682C48BE7 for ; Mon, 8 Jul 2019 03:55:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CDC8320844 for ; Mon, 8 Jul 2019 03:55:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="C/vmJxwP"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="mce7VKr7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDC8320844 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=K4KaSjdVjD0PkLiIHRKcqhcVpVz0JFyV8vLv9a7xopg=; b=C/vmJxwPCd/h72 IYGyc0DrD/phr0YuSyPz/PErxCDYgsmykF5WqYR4Hxjs99htALoJsiCfg8X+KkOm83C1KdqOUrNZm 9mGeZGzwrTq+K3GEKqtG7LXVLcAD13SjW754gGx/f5qYgBYxrIDgStARHFjPifi69xlLjCWQ7WWo2 gdIT8553xRWqn3my6P/5QvS0ayKvrtUZpIkgU4y4W+k+Sn+iZmQevJt+YutODvoqW0zbcsH/wcfyQ 1p5qSsbiewieAhhYxPBNnTa2jGvgKormucu9oWZJfPu/yurLyVksh6mjjCQ3/bjku34ZP/Va3do2v hSJaD/1o4cKsIVf4+kKw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hkKka-0002WC-Rj; Mon, 08 Jul 2019 03:55:36 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hkKit-0008Vn-TE for linux-arm-kernel@lists.infradead.org; Mon, 08 Jul 2019 03:53:56 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x683qlHi073187; Sun, 7 Jul 2019 22:52:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1562557967; bh=/PxbsYKEc7J+gcuFg4Za6foR6b99A27G9weDbwBQOME=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=mce7VKr7jsguyzB9oW2SHO37YJcu552fbsgGA7zMkVnF3ox4rMW1MMrHrC2CQQQhV 5TPqVuGn0+M78BPTnfUsB88AbtMKPesy79hUK40yQeMWi67MsZlBHPTjlNyrjOzXrj WhAx03h+sWS9LMSYDP1ubhrQnYFmkmI2Y4Yaa5VE= Received: from DFLE105.ent.ti.com (dfle105.ent.ti.com [10.64.6.26]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x683qlun102653 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 7 Jul 2019 22:52:47 -0500 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE105.ent.ti.com (10.64.6.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Sun, 7 Jul 2019 22:52:46 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Sun, 7 Jul 2019 22:52:47 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id x683qkEP036231; Sun, 7 Jul 2019 22:52:46 -0500 Received: from localhost (irmo.dhcp.ti.com [128.247.58.153]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id x683qkm26449; Sun, 7 Jul 2019 22:52:46 -0500 (CDT) From: Suman Anna To: Marc Zyngier , Rob Herring , Thomas Gleixner , Jason Cooper Subject: [PATCH 5/6] irqchip/irq-pruss-intc: Add API to trigger a PRU sysevent Date: Sun, 7 Jul 2019 22:52:42 -0500 Message-ID: <20190708035243.12170-6-s-anna@ti.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190708035243.12170-1-s-anna@ti.com> References: <20190708035243.12170-1-s-anna@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190707_205352_019088_7CB1423A X-CRM114-Status: GOOD ( 18.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Grygorii Strashko , David Lechner , Tony Lindgren , Sekhar Nori , linux-kernel@vger.kernel.org, "Andrew F. Davis" , Lokesh Vutla , Murali Karicheri , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Roger Quadros Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Andrew F. Davis" The PRUSS INTC can generate an interrupt to various processor subsystems on the SoC through a set of 64 possible PRU system events. These system events can be used by PRU client drivers or applications for event notifications/signalling between PRUs and MPU or other processors. A new API, pruss_intc_trigger() is provided to MPU-side PRU client drivers/applications to be able to trigger an event/interrupt using IRQ numbers provided by the PRUSS-INTC irqdomain chip. Signed-off-by: Andrew F. Davis Signed-off-by: Suman Anna Signed-off-by: Roger Quadros --- drivers/irqchip/irq-pruss-intc.c | 31 +++++++++++++++++++++++++++++++ include/linux/pruss_intc.h | 26 ++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) create mode 100644 include/linux/pruss_intc.h diff --git a/drivers/irqchip/irq-pruss-intc.c b/drivers/irqchip/irq-pruss-intc.c index 8118c2a2ac43..a0ad50b95cd5 100644 --- a/drivers/irqchip/irq-pruss-intc.c +++ b/drivers/irqchip/irq-pruss-intc.c @@ -421,6 +421,37 @@ static void pruss_intc_irq_relres(struct irq_data *data) module_put(THIS_MODULE); } +/** + * pruss_intc_trigger() - trigger a PRU system event + * @irq: linux IRQ number associated with a PRU system event + * + * Trigger an interrupt by signalling a specific PRU system event. + * This can be used by PRUSS client users to raise/send an event to + * a PRU or any other core that is listening on the host interrupt + * mapped to that specific PRU system event. The @irq variable is the + * Linux IRQ number associated with a specific PRU system event that + * a client user/application uses. The interrupt mappings for this is + * provided by the PRUSS INTC irqchip instance. + * + * Returns 0 on success, or an error value upon failure. + */ +int pruss_intc_trigger(unsigned int irq) +{ + struct irq_desc *desc; + + if (irq <= 0) + return -EINVAL; + + desc = irq_to_desc(irq); + if (!desc) + return -EINVAL; + + pruss_intc_irq_retrigger(&desc->irq_data); + + return 0; +} +EXPORT_SYMBOL_GPL(pruss_intc_trigger); + static int pruss_intc_irq_domain_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw) { diff --git a/include/linux/pruss_intc.h b/include/linux/pruss_intc.h new file mode 100644 index 000000000000..84aa7f7edf42 --- /dev/null +++ b/include/linux/pruss_intc.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/** + * TI PRU-ICSS Subsystem user interfaces + * + * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com + * Andrew F. Davis + * Suman Anna + */ + +#ifndef __LINUX_PRUSS_INTC_H +#define __LINUX_PRUSS_INTC_H + +#if IS_ENABLED(CONFIG_TI_PRUSS_INTC) + +int pruss_intc_trigger(unsigned int irq); + +#else + +static inline int pruss_intc_trigger(unsigned int irq) +{ + return -ENOTSUPP; +} + +#endif /* CONFIG_TI_PRUSS_INTC */ + +#endif /* __LINUX_PRUSS_INTC_H */ -- 2.22.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel