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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 v9 net-next 1/7] mfd: ocelot: add helper to get regmap from a resource Date: Fri, 10 Jun 2022 10:56:49 -0700 Message-Id: <20220610175655.776153-2-colin.foster@in-advantage.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220610175655.776153-1-colin.foster@in-advantage.com> References: <20220610175655.776153-1-colin.foster@in-advantage.com> X-ClientProxiedBy: MWHPR19CA0070.namprd19.prod.outlook.com (2603:10b6:300:94::32) 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: f3b09eeb-93ec-40b1-6b12-08da4b0aa182 X-MS-TrafficTypeDiagnostic: DM6PR10MB3356: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:(13230001)(346002)(366004)(396003)(136003)(39830400003)(1076003)(54906003)(316002)(4326008)(52116002)(8676002)(2616005)(86362001)(508600001)(6512007)(26005)(6506007)(6666004)(41300700001)(6486002)(186003)(83380400001)(2906002)(38350700002)(44832011)(8936002)(36756003)(38100700002)(66556008)(66946007)(66476007)(7416002)(5660300002);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: f3b09eeb-93ec-40b1-6b12-08da4b0aa182 X-MS-Exchange-CrossTenant-AuthSource: MWHPR1001MB2351.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jun 2022 17:57:06.0750 (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: Jcc6B59K0fECSVgDFA+hCr3ooNMxqj1IxNrBt5waAPRrzM6GG4Zq7CmNcozdRs+fXpC3eqvXkCBrDfK/Mwegnt1uAap9l12B049G07bK8oo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR10MB3356 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220610_105711_682178_C615F5CE X-CRM114-Status: GOOD ( 18.41 ) 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); +}