1 // SPDX-License-Identifier: GPL-2.0+
16  * The Odroid Go Ultra has 2 PMICs:
17  * - RK818 (manages the battery and USB-C power supply)
18  * - RK817
19  * Both PMICs feeds power to the S922X SoC, so they must be powered-off in sequence.
20  * Vendor does power-off the RK817 first, then the RK818 so here we follow this sequence.
31 	struct odroid_go_ultra_poweroff_data *poweroff_data = data->cb_data;  in odroid_go_ultra_poweroff_prepare()
36 	rk817 = dev_get_regmap(poweroff_data->rk817, NULL);  in odroid_go_ultra_poweroff_prepare()
38 		dev_err(poweroff_data->dev, "failed to get rk817 regmap\n");  in odroid_go_ultra_poweroff_prepare()
39 		return notifier_from_errno(-EINVAL);  in odroid_go_ultra_poweroff_prepare()
43 	rk818 = dev_get_regmap(poweroff_data->rk818, NULL);  in odroid_go_ultra_poweroff_prepare()
45 		dev_err(poweroff_data->dev, "failed to get rk818 regmap\n");  in odroid_go_ultra_poweroff_prepare()
46 		return notifier_from_errno(-EINVAL);  in odroid_go_ultra_poweroff_prepare()
49 	dev_info(poweroff_data->dev, "Setting PMICs for power off");  in odroid_go_ultra_poweroff_prepare()
54 		dev_err(poweroff_data->dev, "failed to poweroff rk817\n");  in odroid_go_ultra_poweroff_prepare()
61 		dev_err(poweroff_data->dev, "failed to poweroff rk818\n");  in odroid_go_ultra_poweroff_prepare()
83 		return -ENODEV;  in odroid_go_ultra_poweroff_get_pmic_device()
88 		return -EPROBE_DEFER;  in odroid_go_ultra_poweroff_get_pmic_device()
90 	*pmic = &pmic_client->dev;  in odroid_go_ultra_poweroff_get_pmic_device()
100 	poweroff_data = devm_kzalloc(&pdev->dev, sizeof(*poweroff_data), GFP_KERNEL);  in odroid_go_ultra_poweroff_probe()
102 		return -ENOMEM;  in odroid_go_ultra_poweroff_probe()
104 	dev_set_drvdata(&pdev->dev, poweroff_data);  in odroid_go_ultra_poweroff_probe()
107 	ret = odroid_go_ultra_poweroff_get_pmic_device(&pdev->dev, "rockchip,rk818",  in odroid_go_ultra_poweroff_probe()
108 						       &poweroff_data->rk818);  in odroid_go_ultra_poweroff_probe()
110 		return dev_err_probe(&pdev->dev, ret, "failed to get rk818 mfd data\n");  in odroid_go_ultra_poweroff_probe()
113 	ret = odroid_go_ultra_poweroff_get_pmic_device(&pdev->dev, "rockchip,rk817",  in odroid_go_ultra_poweroff_probe()
114 						       &poweroff_data->rk817);  in odroid_go_ultra_poweroff_probe()
116 		return dev_err_probe(&pdev->dev, ret, "failed to get rk817 mfd data\n");  in odroid_go_ultra_poweroff_probe()
119 	ret = devm_register_sys_off_handler(&pdev->dev,  in odroid_go_ultra_poweroff_probe()
125 		return dev_err_probe(&pdev->dev, ret, "failed to register sys-off handler\n");  in odroid_go_ultra_poweroff_probe()
127 	dev_info(&pdev->dev, "Registered Power-Off handler\n");  in odroid_go_ultra_poweroff_probe()
135 		.name	= "odroid-go-ultra-poweroff",
144 	/* Only create when running on the Odroid Go Ultra device */  in odroid_go_ultra_poweroff_init()
145 	if (!of_device_is_compatible(of_root, "hardkernel,odroid-go-ultra"))  in odroid_go_ultra_poweroff_init()
146 		return -ENODEV;  in odroid_go_ultra_poweroff_init()
152 	pdev = platform_device_register_resndata(NULL, "odroid-go-ultra-poweroff", -1,  in odroid_go_ultra_poweroff_init()
165 	/* Only delete when running on the Odroid Go Ultra device */  in odroid_go_ultra_poweroff_exit()
166 	if (!of_device_is_compatible(of_root, "hardkernel,odroid-go-ultra"))  in odroid_go_ultra_poweroff_exit()
177 MODULE_DESCRIPTION("Odroid Go Ultra poweroff driver");