1 // SPDX-License-Identifier: GPL-2.0
5  *  Copyright (C) 2014-2019 Xilinx, Inc.
18 #include <linux/firmware/xlnx-zynqmp.h>
19 #include <linux/mailbox/zynqmp-ipi-message.h>
22  * struct zynqmp_pm_work_struct - Wrapper for struct work_struct
44 	[PM_SUSPEND_MODE_POWER_OFF] = "power-off",
90 	memcpy(payload, msg->data, sizeof(msg->len));  in ipi_receive_callback()
93 		if (work_pending(&zynqmp_pm_init_suspend_work->callback_work))  in ipi_receive_callback()
97 		memcpy(zynqmp_pm_init_suspend_work->args, &payload[1],  in ipi_receive_callback()
98 		       sizeof(zynqmp_pm_init_suspend_work->args));  in ipi_receive_callback()
101 			   &zynqmp_pm_init_suspend_work->callback_work);  in ipi_receive_callback()
111  * zynqmp_pm_init_suspend_work_fn - Initialize suspend
114  * Bottom-half of PM callback IRQ handler.
121 	if (pm_work->args[0] == SUSPEND_SYSTEM_SHUTDOWN) {  in zynqmp_pm_init_suspend_work_fn()
123 	} else if (pm_work->args[0] == SUSPEND_POWER_REQUEST) {  in zynqmp_pm_init_suspend_work_fn()
127 		       __func__, pm_work->args[0]);  in zynqmp_pm_init_suspend_work_fn()
147 		*(s - 1) = '\n';  in suspend_mode_show()
148 	return (s - buf);  in suspend_mode_show()
155 	int md, ret = -EINVAL;  in suspend_mode_store()
186 		return -ENODEV;  in zynqmp_pm_probe()
188 	if (of_find_property(pdev->dev.of_node, "mboxes", NULL)) {  in zynqmp_pm_probe()
190 			devm_kzalloc(&pdev->dev,  in zynqmp_pm_probe()
194 			return -ENOMEM;  in zynqmp_pm_probe()
196 		INIT_WORK(&zynqmp_pm_init_suspend_work->callback_work,  in zynqmp_pm_probe()
198 		client = devm_kzalloc(&pdev->dev, sizeof(*client), GFP_KERNEL);  in zynqmp_pm_probe()
200 			return -ENOMEM;  in zynqmp_pm_probe()
202 		client->dev = &pdev->dev;  in zynqmp_pm_probe()
203 		client->rx_callback = ipi_receive_callback;  in zynqmp_pm_probe()
207 			dev_err(&pdev->dev, "Failed to request rx channel\n");  in zynqmp_pm_probe()
210 	} else if (of_find_property(pdev->dev.of_node, "interrupts", NULL)) {  in zynqmp_pm_probe()
213 			return -ENXIO;  in zynqmp_pm_probe()
215 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,  in zynqmp_pm_probe()
218 						dev_name(&pdev->dev),  in zynqmp_pm_probe()
219 						&pdev->dev);  in zynqmp_pm_probe()
221 			dev_err(&pdev->dev, "devm_request_threaded_irq '%d' "  in zynqmp_pm_probe()
226 		dev_err(&pdev->dev, "Required property not found in DT node\n");  in zynqmp_pm_probe()
227 		return -ENOENT;  in zynqmp_pm_probe()
230 	ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_suspend_mode.attr);  in zynqmp_pm_probe()
232 		dev_err(&pdev->dev, "unable to create sysfs interface\n");  in zynqmp_pm_probe()
241 	sysfs_remove_file(&pdev->dev.kobj, &dev_attr_suspend_mode.attr);  in zynqmp_pm_remove()
250 	{ .compatible = "xlnx,zynqmp-power", },