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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Lars Povlsen , Steen Hegelund , UNGLinuxDriver@microchip.com, Linus Walleij , Wolfram Sang , Terry Bowman , Andy Shevchenko Subject: [PATCH v10 net-next 1/7] mfd: ocelot: add helper to get regmap from a resource Date: Fri, 10 Jun 2022 13:23:24 -0700 Message-Id: <20220610202330.799510-2-colin.foster@in-advantage.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220610202330.799510-1-colin.foster@in-advantage.com> References: <20220610202330.799510-1-colin.foster@in-advantage.com> X-ClientProxiedBy: MW4PR04CA0246.namprd04.prod.outlook.com (2603:10b6:303:88::11) To MWHPR1001MB2351.namprd10.prod.outlook.com (2603:10b6:301:35::37) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 409485c7-5b1b-40f5-d8c0-08da4b1f1e91 X-MS-TrafficTypeDiagnostic: MWHPR10MB1629:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MWHPR1001MB2351.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230016)(136003)(39830400003)(396003)(366004)(346002)(316002)(83380400001)(2616005)(2906002)(1076003)(6486002)(54906003)(8936002)(36756003)(6666004)(52116002)(6512007)(6506007)(26005)(186003)(41300700001)(86362001)(44832011)(66556008)(66476007)(38100700002)(38350700002)(5660300002)(4326008)(7416002)(8676002)(508600001)(66946007);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: in-advantage.com X-MS-Exchange-CrossTenant-Network-Message-Id: 409485c7-5b1b-40f5-d8c0-08da4b1f1e91 X-MS-Exchange-CrossTenant-AuthSource: MWHPR1001MB2351.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jun 2022 20:23:45.8259 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 48e842ca-fbd8-4633-a79d-0c955a7d3aae X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: JZAfrfHAfR9freUzlaa651DctPLaYAOlFb/Bo8Vh1v2h5xs7V22eKJfLWrGns2r4hthJQFOrAomqKDtNJN2peLJkKq1i3YXqAd6oFt/3cjk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR10MB1629 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220610_132353_818207_3C402849 X-CRM114-Status: GOOD ( 18.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Several ocelot-related modules are designed for MMIO / regmaps. As such, they often use a combination of devm_platform_get_and_ioremap_resource and devm_regmap_init_mmio. Operating in an MFD might be different, in that it could be memory mapped, or it could be SPI, I2C... In these cases a fallback to use IORESOURCE_REG instead of IORESOURCE_MEM becomes necessary. When this happens, there's redundant logic that needs to be implemented in every driver. In order to avoid this redundancy, utilize a single function that, if the MFD scenario is enabled, will perform this fallback logic. Signed-off-by: Colin Foster --- MAINTAINERS | 5 +++++ include/linux/mfd/ocelot.h | 22 ++++++++++++++++++++++ 2 files changed, 27 insertions(+) create mode 100644 include/linux/mfd/ocelot.h diff --git a/MAINTAINERS b/MAINTAINERS index 033a01b07f8f..91b4151c5ad1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14352,6 +14352,11 @@ F: net/dsa/tag_ocelot.c F: net/dsa/tag_ocelot_8021q.c F: tools/testing/selftests/drivers/net/ocelot/* +OCELOT EXTERNAL SWITCH CONTROL +M: Colin Foster +S: Supported +F: include/linux/mfd/ocelot.h + OCXL (Open Coherent Accelerator Processor Interface OpenCAPI) DRIVER M: Frederic Barrat M: Andrew Donnellan diff --git a/include/linux/mfd/ocelot.h b/include/linux/mfd/ocelot.h new file mode 100644 index 000000000000..40e775f1143f --- /dev/null +++ b/include/linux/mfd/ocelot.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ +/* Copyright 2022 Innovative Advantage Inc. */ + +#include +#include +#include + +static inline void +ocelot_platform_init_regmap_from_resource(struct platform_device *pdev, + unsigned int index, + struct regmap **map, + struct resource **res, + const struct regmap_config *config); +{ + u32 __iomem *regs = + devm_platform_get_and_ioremap_resource(pdev, index, res); + + if (!IS_ERR(regs)) + *map = devm_regmap_init_mmio(&pdev->dev, regs, config); + else + *map = ERR_PTR(ENODEV); +}