1 // SPDX-License-Identifier: GPL-2.0-only
4  * Author: Chi-Fang Li <cfli0@nuvoton.com>
16 #include <linux/reset-controller.h>
18 #include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
24 	/* protect registers against concurrent read-modify-write */
135 		       data->base + ma35d1_reset_map[id].reg_ofs);  in ma35d1_restart_handler()
146 		return -EINVAL;  in ma35d1_reset_update()
148 	spin_lock_irqsave(&data->lock, flags);  in ma35d1_reset_update()
149 	reg = readl_relaxed(data->base + ma35d1_reset_map[id].reg_ofs);  in ma35d1_reset_update()
154 	writel_relaxed(reg, data->base + ma35d1_reset_map[id].reg_ofs);  in ma35d1_reset_update()
155 	spin_unlock_irqrestore(&data->lock, flags);  in ma35d1_reset_update()
176 		return -EINVAL;  in ma35d1_reset_status()
178 	reg = readl_relaxed(data->base + ma35d1_reset_map[id].reg_ofs);  in ma35d1_reset_status()
189 	{ .compatible = "nuvoton,ma35d1-reset" },
196 	struct device *dev = &pdev->dev;  in ma35d1_reset_probe()
199 	if (!pdev->dev.of_node) {  in ma35d1_reset_probe()
200 		dev_err(&pdev->dev, "Device tree node not found\n");  in ma35d1_reset_probe()
201 		return -EINVAL;  in ma35d1_reset_probe()
206 		return -ENOMEM;  in ma35d1_reset_probe()
208 	reset_data->base = devm_platform_ioremap_resource(pdev, 0);  in ma35d1_reset_probe()
209 	if (IS_ERR(reset_data->base))  in ma35d1_reset_probe()
210 		return PTR_ERR(reset_data->base);  in ma35d1_reset_probe()
212 	reset_data->rcdev.owner = THIS_MODULE;  in ma35d1_reset_probe()
213 	reset_data->rcdev.nr_resets = MA35D1_RESET_COUNT;  in ma35d1_reset_probe()
214 	reset_data->rcdev.ops = &ma35d1_reset_ops;  in ma35d1_reset_probe()
215 	reset_data->rcdev.of_node = dev->of_node;  in ma35d1_reset_probe()
216 	reset_data->restart_handler.notifier_call = ma35d1_restart_handler;  in ma35d1_reset_probe()
217 	reset_data->restart_handler.priority = 192;  in ma35d1_reset_probe()
218 	spin_lock_init(&reset_data->lock);  in ma35d1_reset_probe()
220 	err = register_restart_handler(&reset_data->restart_handler);  in ma35d1_reset_probe()
222 		dev_warn(&pdev->dev, "failed to register restart handler\n");  in ma35d1_reset_probe()
224 	return devm_reset_controller_register(dev, &reset_data->rcdev);  in ma35d1_reset_probe()
230 		.name = "ma35d1-reset",