1 // SPDX-License-Identifier: GPL-2.0
3  *  Copyright (C) 2018-2019, Intel Corporation.
7  *  Based on syscon driver.
10 #include <linux/arm-smccc.h>
13 #include <linux/mfd/altera-sysmgr.h>
14 #include <linux/mfd/syscon.h>
23  * struct altr_sysmgr - Altera SOCFPGA System Manager
90  * Find the sysmgr previous configured in probe() and return regmap property.
94  * @property: Device Tree property name which references the sysmgr
100 	struct altr_sysmgr *sysmgr;  in altr_sysmgr_regmap_lookup_by_phandle()  local
109 		return ERR_PTR(-ENODEV);  in altr_sysmgr_regmap_lookup_by_phandle()
115 		return ERR_PTR(-EPROBE_DEFER);  in altr_sysmgr_regmap_lookup_by_phandle()
117 	sysmgr = dev_get_drvdata(dev);  in altr_sysmgr_regmap_lookup_by_phandle()
119 	return sysmgr->regmap;  in altr_sysmgr_regmap_lookup_by_phandle()
125 	struct altr_sysmgr *sysmgr;  in sysmgr_probe()  local
129 	struct device *dev = &pdev->dev;  in sysmgr_probe()
130 	struct device_node *np = dev->of_node;  in sysmgr_probe()
133 	sysmgr = devm_kzalloc(dev, sizeof(*sysmgr), GFP_KERNEL);  in sysmgr_probe()
134 	if (!sysmgr)  in sysmgr_probe()
135 		return -ENOMEM;  in sysmgr_probe()
139 		return -ENOENT;  in sysmgr_probe()
141 	sysmgr_config.max_register = resource_size(res) -  in sysmgr_probe()
143 	if (of_device_is_compatible(np, "altr,sys-mgr-s10")) {  in sysmgr_probe()
149 					  (void *)(uintptr_t)res->start,  in sysmgr_probe()
152 		base = devm_ioremap(dev, res->start, resource_size(res));  in sysmgr_probe()
154 			return -ENOMEM;  in sysmgr_probe()
156 		sysmgr_config.max_register = res->end - res->start - 3;  in sysmgr_probe()
165 	sysmgr->regmap = regmap;  in sysmgr_probe()
167 	platform_set_drvdata(pdev, sysmgr);  in sysmgr_probe()
173 	{ .compatible = "altr,sys-mgr" },
174 	{ .compatible = "altr,sys-mgr-s10" },