pci/pwrctl/pci-pwrctl-pwrseq.c

1 // SPDX-License-Identifier: GPL-2.0-only
9 #include <linux/pci-pwrctl.h>
24 	 * Called before doing anything else to perform device-specific
41 	 * Check the existence of the regulator supply that exists on all  in pci_pwrctl_pwrseq_qcm_wcn_validate_device()
44 	if (!device_property_present(dev, "vddaon-supply"))  in pci_pwrctl_pwrseq_qcm_wcn_validate_device()
45 		return -ENODEV;  in pci_pwrctl_pwrseq_qcm_wcn_validate_device()
66 	struct device *dev = &pdev->dev;  in pci_pwrctl_pwrseq_probe()
70 	if (!pdata || !pdata->target)  in pci_pwrctl_pwrseq_probe()
71 		return -EINVAL;  in pci_pwrctl_pwrseq_probe()
73 	if (pdata->validate_device) {  in pci_pwrctl_pwrseq_probe()
74 		ret = pdata->validate_device(dev);  in pci_pwrctl_pwrseq_probe()
81 		return -ENOMEM;  in pci_pwrctl_pwrseq_probe()
83 	data->pwrseq = devm_pwrseq_get(dev, pdata->target);  in pci_pwrctl_pwrseq_probe()
84 	if (IS_ERR(data->pwrseq))  in pci_pwrctl_pwrseq_probe()
85 		return dev_err_probe(dev, PTR_ERR(data->pwrseq),  in pci_pwrctl_pwrseq_probe()
88 	ret = pwrseq_power_on(data->pwrseq);  in pci_pwrctl_pwrseq_probe()
91 				     "Failed to power-on the device\n");  in pci_pwrctl_pwrseq_probe()
94 				       data->pwrseq);  in pci_pwrctl_pwrseq_probe()
98 	pci_pwrctl_init(&data->ctx, dev);  in pci_pwrctl_pwrseq_probe()
100 	ret = devm_pci_pwrctl_device_set_ready(dev, &data->ctx);  in pci_pwrctl_pwrseq_probe()
130 		.name = "pci-pwrctl-pwrseq",