From patchwork Fri Sep 1 09:41:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 13372359 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD19ECA0FE6 for ; Fri, 1 Sep 2023 09:44:39 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qc0ft-0001cF-Bs; Fri, 01 Sep 2023 05:42:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qc0fq-0001VE-72; Fri, 01 Sep 2023 05:42:42 -0400 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qc0fn-0002wb-L8; Fri, 01 Sep 2023 05:42:41 -0400 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4RcY3d2STnz4x2b; Fri, 1 Sep 2023 19:42:37 +1000 (AEST) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4RcY3b2J0Pz4x2Y; Fri, 1 Sep 2023 19:42:35 +1000 (AEST) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: =?utf-8?q?C=C3=A9dric_Le_Goater?= , Alistair Francis , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Joel Stanley Subject: [PULL 07/26] hw/ssi: Introduce a ssi_get_cs() helper Date: Fri, 1 Sep 2023 11:41:55 +0200 Message-ID: <20230901094214.296918-8-clg@kaod.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230901094214.296918-1-clg@kaod.org> References: <20230901094214.296918-1-clg@kaod.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=SnXb=ER=kaod.org=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Simple routine to retrieve a DeviceState object on a SPI bus using its CS index. It will be useful for the board to wire the CS lines. Cc: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Joel Stanley Signed-off-by: Cédric Le Goater --- include/hw/ssi/ssi.h | 2 ++ hw/ssi/ssi.c | 15 +++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/include/hw/ssi/ssi.h b/include/hw/ssi/ssi.h index c5bdf1f2165f..3cdcbd539042 100644 --- a/include/hw/ssi/ssi.h +++ b/include/hw/ssi/ssi.h @@ -112,4 +112,6 @@ SSIBus *ssi_create_bus(DeviceState *parent, const char *name); uint32_t ssi_transfer(SSIBus *bus, uint32_t val); +DeviceState *ssi_get_cs(SSIBus *bus, uint8_t cs_index); + #endif diff --git a/hw/ssi/ssi.c b/hw/ssi/ssi.c index 4e33e0ea5bc2..54ca3c34e9d0 100644 --- a/hw/ssi/ssi.c +++ b/hw/ssi/ssi.c @@ -27,6 +27,21 @@ struct SSIBus { #define TYPE_SSI_BUS "SSI" OBJECT_DECLARE_SIMPLE_TYPE(SSIBus, SSI_BUS) +DeviceState *ssi_get_cs(SSIBus *bus, uint8_t cs_index) +{ + BusState *b = BUS(bus); + BusChild *kid; + + QTAILQ_FOREACH(kid, &b->children, sibling) { + SSIPeripheral *kid_ssi = SSI_PERIPHERAL(kid->child); + if (kid_ssi->cs_index == cs_index) { + return kid->child; + } + } + + return NULL; +} + static const TypeInfo ssi_bus_info = { .name = TYPE_SSI_BUS, .parent = TYPE_BUS,