power/reset/syscon-poweroff.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Generic Syscon Poweroff Driver
12 #include <linux/mfd/syscon.h>
25 	/* Issue the poweroff */  in syscon_poweroff()
30 	pr_emerg("Unable to poweroff system\n");  in syscon_poweroff()
37 	map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap");  in syscon_poweroff_probe()
39 		dev_err(&pdev->dev, "unable to get syscon");  in syscon_poweroff_probe()
43 	if (of_property_read_u32(pdev->dev.of_node, "offset", &offset)) {  in syscon_poweroff_probe()
44 		dev_err(&pdev->dev, "unable to read 'offset'");  in syscon_poweroff_probe()
45 		return -EINVAL;  in syscon_poweroff_probe()
48 	value_err = of_property_read_u32(pdev->dev.of_node, "value", &value);  in syscon_poweroff_probe()
49 	mask_err = of_property_read_u32(pdev->dev.of_node, "mask", &mask);  in syscon_poweroff_probe()
51 		dev_err(&pdev->dev, "unable to read 'value' and 'mask'");  in syscon_poweroff_probe()
52 		return -EINVAL;  in syscon_poweroff_probe()
65 		dev_err(&pdev->dev, "pm_power_off already claimed for %ps",  in syscon_poweroff_probe()
67 		return -EBUSY;  in syscon_poweroff_probe()
84 	{ .compatible = "syscon-poweroff" },
92 		.name = "syscon-poweroff",