From patchwork Tue Dec 8 09:04:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 11958051 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 A03B8C2BBD4 for ; Tue, 8 Dec 2020 09:05:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C69A23A9B for ; Tue, 8 Dec 2020 09:05:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728739AbgLHJFh (ORCPT ); Tue, 8 Dec 2020 04:05:37 -0500 Received: from fllv0016.ext.ti.com ([198.47.19.142]:51920 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728736AbgLHJFh (ORCPT ); Tue, 8 Dec 2020 04:05:37 -0500 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 0B894gnS130535; Tue, 8 Dec 2020 03:04:42 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1607418282; bh=r6BZcfFspKekPk2CsVfLnHhDTFjI4u11uU/6NZJdVNU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=tCg29i+B8UJwV3Pfq2s0qvVYpTkxPJEGk5ifz25EHCOxFMzmyiyjpXSirFejLLuty qSpmK1QiKBYleYnjYb2aY/7bAK4qG8BXSwCoCx8rhv8m6eiVEK9lhlbUO2woDTBehf SFVdYfBPkAMbMiANtfxWRXlRh/p3TZtvb8pYVxG8= Received: from DFLE115.ent.ti.com (dfle115.ent.ti.com [10.64.6.36]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 0B894gO1057170 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 8 Dec 2020 03:04:42 -0600 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Tue, 8 Dec 2020 03:04:41 -0600 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Tue, 8 Dec 2020 03:04:41 -0600 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 0B893dcK120112; Tue, 8 Dec 2020 03:04:38 -0600 From: Peter Ujfalusi To: , , , CC: , , , , , , , Subject: [PATCH v3 15/20] dmaengine: ti: Add support for k3 event routers Date: Tue, 8 Dec 2020 11:04:35 +0200 Message-ID: <20201208090440.31792-16-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201208090440.31792-1-peter.ujfalusi@ti.com> References: <20201208090440.31792-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org In k3 architecture a DMA channel (in TR momde) can be triggered by global events, origination from different modules. The events for triggers can be sent from any module which is connected to PSI-L fabric, but the event number to be sent is DMA channel specific, it is only known after the channel itself is requested. The router operation needs to be split up: - route_allocate: configure the dma_spec for the DMA and store the configuration which is needed for the router's input - set_event: callback used by the DMA driver to set the event number for the channel and enable the routing Signed-off-by: Peter Ujfalusi --- include/linux/dma/k3-event-router.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 include/linux/dma/k3-event-router.h diff --git a/include/linux/dma/k3-event-router.h b/include/linux/dma/k3-event-router.h new file mode 100644 index 000000000000..e3f88b2f87be --- /dev/null +++ b/include/linux/dma/k3-event-router.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com + */ + +#ifndef K3_EVENT_ROUTER_ +#define K3_EVENT_ROUTER_ + +#include + +struct k3_event_route_data { + void *priv; + int (*set_event)(void *priv, u32 event); +}; + +#endif /* K3_EVENT_ROUTER_ */