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Wysocki" , Marc Zyngier , Hector Martin , Angela Czubak , Steen Hegelund , Lars Povlsen , Linus Walleij , Vinod Koul , Kishon Vijay Abraham I , Russell King , Heiner Kallweit , Jakub Kicinski , "David S. Miller" , Florian Fainelli , Vivien Didelot , Andrew Lunn , UNGLinuxDriver@microchip.com, Alexandre Belloni , Claudiu Manoil , Vladimir Oltean , Lee Jones , katie.morris@in-advantage.com Subject: [RFC v7 net-next 07/13] pinctrl: microchip-sgpio: add ability to be used in a non-mmio configuration Date: Sun, 6 Mar 2022 18:12:02 -0800 Message-Id: <20220307021208.2406741-8-colin.foster@in-advantage.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220307021208.2406741-1-colin.foster@in-advantage.com> References: <20220307021208.2406741-1-colin.foster@in-advantage.com> X-ClientProxiedBy: MW4PR04CA0174.namprd04.prod.outlook.com (2603:10b6:303:85::29) 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: 93b568c6-ee85-4036-6c1d-08d9ffdfeee0 X-MS-TrafficTypeDiagnostic: SA2PR10MB4553:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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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: 93b568c6-ee85-4036-6c1d-08d9ffdfeee0 X-MS-Exchange-CrossTenant-AuthSource: MWHPR1001MB2351.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Mar 2022 02:12:30.2923 (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: QS8n2noJZUc5OMwcUcrNlVkcP5Gyb4mbGTd0xjp6ti/bGpmhiGahr1/MTekwX1pGwS5AnjUWX2MIVvMa2OCVlYfrIKRzeKJiK8hSkajuudE= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA2PR10MB4553 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220306_181237_532920_35B05F70 X-CRM114-Status: GOOD ( 14.90 ) 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 There are a few Ocelot chips that can contain SGPIO logic, but can be controlled externally. Specifically the VSC7511, 7512, 7513, and 7514. In the externally controlled configurations these registers are not memory-mapped. Add support for these non-memory-mapped configurations. Signed-off-by: Colin Foster --- drivers/pinctrl/pinctrl-microchip-sgpio.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c index e8e47a6808e6..a91272936c8f 100644 --- a/drivers/pinctrl/pinctrl-microchip-sgpio.c +++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "core.h" #include "pinconf.h" @@ -819,6 +820,7 @@ static int microchip_sgpio_probe(struct platform_device *pdev) struct fwnode_handle *fwnode; struct reset_control *reset; struct sgpio_priv *priv; + struct resource *res; struct clk *clk; u32 __iomem *regs; u32 val; @@ -851,11 +853,23 @@ static int microchip_sgpio_probe(struct platform_device *pdev) return -EINVAL; } - regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(regs)) - return PTR_ERR(regs); + regs = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); + if (IS_ERR(regs)) { + /* + * Fall back to using IORESOURCE_REG, which is possible in an + * MFD configuration + */ + res = platform_get_resource(pdev, IORESOURCE_REG, 0); + if (!res) { + dev_err(dev, "Failed to get resource\n"); + return -ENODEV; + } + + priv->regs = ocelot_get_regmap_from_resource(dev, res); + } else { + priv->regs = devm_regmap_init_mmio(dev, regs, ®map_config); + } - priv->regs = devm_regmap_init_mmio(dev, regs, ®map_config); if (IS_ERR(priv->regs)) return PTR_ERR(priv->regs);