1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
9 #include <linux/input.h>
50 	struct input_dev *input;  member
69 	if (pwrkey->revision == 0)  in pm8941_reboot_notify()
74 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_reboot_notify()
75 				   pwrkey->baseaddr + enable_reg,  in pm8941_reboot_notify()
79 		dev_err(pwrkey->dev,  in pm8941_reboot_notify()
100 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_reboot_notify()
101 				   pwrkey->baseaddr + PON_PS_HOLD_RST_CTL,  in pm8941_reboot_notify()
105 		dev_err(pwrkey->dev, "unable to set ps hold reset type: %d\n",  in pm8941_reboot_notify()
108 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_reboot_notify()
109 				   pwrkey->baseaddr + enable_reg,  in pm8941_reboot_notify()
113 		dev_err(pwrkey->dev, "unable to re-set enable: %d\n", error);  in pm8941_reboot_notify()
124 	error = regmap_read(pwrkey->regmap,  in pm8941_pwrkey_irq()
125 			    pwrkey->baseaddr + PON_RT_STS, &sts);  in pm8941_pwrkey_irq()
129 	input_report_key(pwrkey->input, pwrkey->code,  in pm8941_pwrkey_irq()
130 			 sts & pwrkey->data->status_bit);  in pm8941_pwrkey_irq()
131 	input_sync(pwrkey->input);  in pm8941_pwrkey_irq()
141 		enable_irq_wake(pwrkey->irq);  in pm8941_pwrkey_suspend()
151 		disable_irq_wake(pwrkey->irq);  in pm8941_pwrkey_resume()
167 	if (of_property_read_u32(pdev->dev.of_node, "debounce", &req_delay))  in pm8941_pwrkey_probe()
171 		dev_err(&pdev->dev, "invalid debounce time: %u\n", req_delay);  in pm8941_pwrkey_probe()
172 		return -EINVAL;  in pm8941_pwrkey_probe()
175 	pull_up = of_property_read_bool(pdev->dev.of_node, "bias-pull-up");  in pm8941_pwrkey_probe()
177 	pwrkey = devm_kzalloc(&pdev->dev, sizeof(*pwrkey), GFP_KERNEL);  in pm8941_pwrkey_probe()
179 		return -ENOMEM;  in pm8941_pwrkey_probe()
181 	pwrkey->dev = &pdev->dev;  in pm8941_pwrkey_probe()
182 	pwrkey->data = of_device_get_match_data(&pdev->dev);  in pm8941_pwrkey_probe()
184 	parent = pdev->dev.parent;  in pm8941_pwrkey_probe()
185 	pwrkey->regmap = dev_get_regmap(parent, NULL);  in pm8941_pwrkey_probe()
186 	if (!pwrkey->regmap) {  in pm8941_pwrkey_probe()
192 		pwrkey->regmap = dev_get_regmap(parent->parent, NULL);  in pm8941_pwrkey_probe()
193 		if (!pwrkey->regmap) {  in pm8941_pwrkey_probe()
194 			dev_err(&pdev->dev, "failed to locate regmap\n");  in pm8941_pwrkey_probe()
195 			return -ENODEV;  in pm8941_pwrkey_probe()
198 		error = of_property_read_u32(parent->of_node,  in pm8941_pwrkey_probe()
199 					     "reg", &pwrkey->baseaddr);  in pm8941_pwrkey_probe()
201 		error = of_property_read_u32(pdev->dev.of_node, "reg",  in pm8941_pwrkey_probe()
202 					     &pwrkey->baseaddr);  in pm8941_pwrkey_probe()
207 	pwrkey->irq = platform_get_irq(pdev, 0);  in pm8941_pwrkey_probe()
208 	if (pwrkey->irq < 0)  in pm8941_pwrkey_probe()
209 		return pwrkey->irq;  in pm8941_pwrkey_probe()
211 	error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_REV2,  in pm8941_pwrkey_probe()
212 			    &pwrkey->revision);  in pm8941_pwrkey_probe()
214 		dev_err(&pdev->dev, "failed to set debounce: %d\n", error);  in pm8941_pwrkey_probe()
218 	error = of_property_read_u32(pdev->dev.of_node, "linux,code",  in pm8941_pwrkey_probe()
219 				     &pwrkey->code);  in pm8941_pwrkey_probe()
221 		dev_dbg(&pdev->dev,  in pm8941_pwrkey_probe()
223 		pwrkey->code = KEY_POWER;  in pm8941_pwrkey_probe()
226 	pwrkey->input = devm_input_allocate_device(&pdev->dev);  in pm8941_pwrkey_probe()
227 	if (!pwrkey->input) {  in pm8941_pwrkey_probe()
228 		dev_dbg(&pdev->dev, "unable to allocate input device\n");  in pm8941_pwrkey_probe()
229 		return -ENOMEM;  in pm8941_pwrkey_probe()
232 	input_set_capability(pwrkey->input, EV_KEY, pwrkey->code);  in pm8941_pwrkey_probe()
234 	pwrkey->input->name = "pm8941_pwrkey";  in pm8941_pwrkey_probe()
235 	pwrkey->input->phys = "pm8941_pwrkey/input0";  in pm8941_pwrkey_probe()
240 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_pwrkey_probe()
241 				   pwrkey->baseaddr + PON_DBC_CTL,  in pm8941_pwrkey_probe()
245 		dev_err(&pdev->dev, "failed to set debounce: %d\n", error);  in pm8941_pwrkey_probe()
249 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_pwrkey_probe()
250 				   pwrkey->baseaddr + PON_PULL_CTL,  in pm8941_pwrkey_probe()
251 				   pwrkey->data->pull_up_bit,  in pm8941_pwrkey_probe()
252 				   pull_up ? pwrkey->data->pull_up_bit : 0);  in pm8941_pwrkey_probe()
254 		dev_err(&pdev->dev, "failed to set pull: %d\n", error);  in pm8941_pwrkey_probe()
258 	error = devm_request_threaded_irq(&pdev->dev, pwrkey->irq,  in pm8941_pwrkey_probe()
263 		dev_err(&pdev->dev, "failed requesting IRQ: %d\n", error);  in pm8941_pwrkey_probe()
267 	error = input_register_device(pwrkey->input);  in pm8941_pwrkey_probe()
269 		dev_err(&pdev->dev, "failed to register input device: %d\n",  in pm8941_pwrkey_probe()
274 	pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify,  in pm8941_pwrkey_probe()
275 	error = register_reboot_notifier(&pwrkey->reboot_notifier);  in pm8941_pwrkey_probe()
277 		dev_err(&pdev->dev, "failed to register reboot notifier: %d\n",  in pm8941_pwrkey_probe()
283 	device_init_wakeup(&pdev->dev, 1);  in pm8941_pwrkey_probe()
292 	unregister_reboot_notifier(&pwrkey->reboot_notifier);  in pm8941_pwrkey_remove()
308 	{ .compatible = "qcom,pm8941-pwrkey", .data = &pwrkey_data },
309 	{ .compatible = "qcom,pm8941-resin", .data = &resin_data },
318 		.name = "pm8941-pwrkey",