1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2026 Kuan-Wei Chiu <visitorckw@gmail.com>
38 	struct qemu_virt_ctrl *ctrl = data->cb_data;  in qemu_virt_ctrl_power_off()  local
40 	virt_ctrl_write32(CMD_HALT, ctrl->base + VIRT_CTRL_REG_CMD);  in qemu_virt_ctrl_power_off()
47 	struct qemu_virt_ctrl *ctrl = data->cb_data;  in qemu_virt_ctrl_restart()  local
49 	virt_ctrl_write32(CMD_RESET, ctrl->base + VIRT_CTRL_REG_CMD);  in qemu_virt_ctrl_restart()
57 	struct qemu_virt_ctrl *ctrl = container_of(nb, struct qemu_virt_ctrl, reboot_nb);  in qemu_virt_ctrl_reboot_notify()  local
60 		virt_ctrl_write32(CMD_HALT, ctrl->base + VIRT_CTRL_REG_CMD);  in qemu_virt_ctrl_reboot_notify()
67 	struct qemu_virt_ctrl *ctrl;  in qemu_virt_ctrl_probe()  local
70 	ctrl = devm_kzalloc(&pdev->dev, sizeof(*ctrl), GFP_KERNEL);  in qemu_virt_ctrl_probe()
71 	if (!ctrl)  in qemu_virt_ctrl_probe()
72 		return -ENOMEM;  in qemu_virt_ctrl_probe()
74 	ctrl->base = devm_platform_ioremap_resource(pdev, 0);  in qemu_virt_ctrl_probe()
75 	if (IS_ERR(ctrl->base))  in qemu_virt_ctrl_probe()
76 		return PTR_ERR(ctrl->base);  in qemu_virt_ctrl_probe()
78 	ret = devm_register_sys_off_handler(&pdev->dev,  in qemu_virt_ctrl_probe()
82 					    ctrl);  in qemu_virt_ctrl_probe()
84 		return dev_err_probe(&pdev->dev, ret,  in qemu_virt_ctrl_probe()
87 	ret = devm_register_sys_off_handler(&pdev->dev,  in qemu_virt_ctrl_probe()
91 					    ctrl);  in qemu_virt_ctrl_probe()
93 		return dev_err_probe(&pdev->dev, ret,  in qemu_virt_ctrl_probe()
94 				     "cannot register power-off handler\n");  in qemu_virt_ctrl_probe()
96 	ctrl->reboot_nb.notifier_call = qemu_virt_ctrl_reboot_notify;  in qemu_virt_ctrl_probe()
97 	ret = devm_register_reboot_notifier(&pdev->dev, &ctrl->reboot_nb);  in qemu_virt_ctrl_probe()
99 		return dev_err_probe(&pdev->dev, ret, "cannot register reboot notifier\n");  in qemu_virt_ctrl_probe()
105 	{ .name = "qemu-virt-ctrl" },
113 		.name = "qemu-virt-ctrl",
119 MODULE_AUTHOR("Kuan-Wei Chiu <visitorckw@gmail.com>");