From patchwork Wed Jun 7 04:39:36 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: 13269975 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 3824BC7EE23 for ; Wed, 7 Jun 2023 04:43:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q6ky5-0001oO-8x; Wed, 07 Jun 2023 00:40:21 -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 1q6ky3-0001ng-Nn; Wed, 07 Jun 2023 00:40:19 -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 1q6ky2-0003nw-1Q; Wed, 07 Jun 2023 00:40:19 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4QbZQR2ggfz4x4B; Wed, 7 Jun 2023 14:40:15 +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 4QbZQN3xgrz4x4F; Wed, 7 Jun 2023 14:40:12 +1000 (AEST) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, Peter Maydell , Joel Stanley , Andrew Jeffery , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , =?utf-8?q?C?= =?utf-8?q?=C3=A9dric_Le_Goater?= , Alistair Francis Subject: [PATCH v2 05/12] hw/ssi: Introduce a ssi_get_cs() helper Date: Wed, 7 Jun 2023 06:39:36 +0200 Message-Id: <20230607043943.1837186-6-clg@kaod.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230607043943.1837186-1-clg@kaod.org> References: <20230607043943.1837186-1-clg@kaod.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=5JAy=B3=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, T_SCC_BODY_TEXT_LINE=-0.01 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 address/cs. It will be useful for the board to wire the CS lines. Cc: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Cédric Le Goater Reviewed-by: Joel Stanley --- 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 9e0706a5248c..01662521b09a 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 addr); + #endif diff --git a/hw/ssi/ssi.c b/hw/ssi/ssi.c index d4409535429c..7c71fce0db90 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 addr) +{ + BusState *b = BUS(bus); + BusChild *kid; + + QTAILQ_FOREACH(kid, &b->children, sibling) { + SSIPeripheral *kid_ssi = SSI_PERIPHERAL(kid->child); + if (kid_ssi->addr == addr) { + return kid->child; + } + } + + return NULL; +} + static const TypeInfo ssi_bus_info = { .name = TYPE_SSI_BUS, .parent = TYPE_BUS,