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Miller" , Florian Fainelli , Vivien Didelot , Andrew Lunn , UNGLinuxDriver@microchip.com, Alexandre Belloni , Claudiu Manoil , Vladimir Oltean , Lee Jones Subject: [RFC v8 net-next 06/16] pinctrl: microchip-sgpio: add ability to be used in a non-mmio configuration Date: Sun, 8 May 2022 11:53:03 -0700 Message-Id: <20220508185313.2222956-7-colin.foster@in-advantage.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220508185313.2222956-1-colin.foster@in-advantage.com> References: <20220508185313.2222956-1-colin.foster@in-advantage.com> X-ClientProxiedBy: SJ0PR03CA0045.namprd03.prod.outlook.com (2603:10b6:a03:33e::20) 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: bd86c6ff-6fbe-43e3-719c-08da31241131 X-MS-TrafficTypeDiagnostic: SJ0PR10MB5533: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: uGHGFKiKcF7m5e5Gp+Y8FIsVv4iVu6JBYZv2XgNaRbIR/wg5MmDrZEcIeZfqmr+cxMtgWxxrvk9Yn9IF5vHqtEC/m90DZlc14ye36o3Z29SuY+VCzm5xcHo+OhOiM6Mm8AavI845Bhfuo0jcsHF3QJcqlOfSwBXF3VIYanCxCrNwSUD1U3n80VhUdUfB+nnsX2cJRuDokSIWxSezDCmc0Rm+qGHe9maPT49SOSl4niJo4CCQkouQyaVg1c/2ov8b/i8JNTp45VkVIRd4lExYxt4Fc5U72gnGWkG3AU0l7kvIEimUn9FLuvJskcZ1fMTvqkgn2dI2BeTl3EO70CyJfiqhL8T0t1dPHbgm/crXGNB6WWzpvS/kNF7QIHKnoZBU/53i8hIy2Q17UgKuQ+7AGeoU7z1TVyaCM/Bse1HOt3aZuUtoquTkG/DoFrFaQ/MC3ehNt6jnt9u4IvUyWPUjODj8GEMk3x9wiZLZnsDA6Q7upbt2oANsEKVwyrmWOyt8TUIBBuCTogaKG/uXnUJulM0V5CA1Eml+0rUZHb3BquFUHHX2umPk46Wg9vYdxKe9SRdRm+sNYbYXDiK6REgXPZVOmN1TjffpvmFvgawRiTyUons0JHONMbJPHk+LEFTiwG66hvic/mCTKy1qpFWDS7/4/cLCAhGkZENjMNmj6PQateFhwafZlykdvkgOCKZWuzcfBmatFBzEGEYa/J+0Ug== X-Forefront-Antispam-Report: CIP:255.255.255.255; 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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 8953175c7e3e..88ab961cc5b9 100644 --- a/drivers/pinctrl/pinctrl-microchip-sgpio.c +++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "core.h" #include "pinconf.h" @@ -899,6 +900,7 @@ 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; @@ -933,11 +935,23 @@ 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_init_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);