1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2010-2011, 2020-2021, The Linux Foundation. All rights reserved.
75 	if (pwrkey->revision == 0)  in pm8941_reboot_notify()
80 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_reboot_notify()
81 				   pwrkey->baseaddr + enable_reg,  in pm8941_reboot_notify()
85 		dev_err(pwrkey->dev,  in pm8941_reboot_notify()
106 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_reboot_notify()
107 				   pwrkey->baseaddr + PON_PS_HOLD_RST_CTL,  in pm8941_reboot_notify()
111 		dev_err(pwrkey->dev, "unable to set ps hold reset type: %d\n",  in pm8941_reboot_notify()
114 	error = regmap_update_bits(pwrkey->regmap,  in pm8941_reboot_notify()
115 				   pwrkey->baseaddr + enable_reg,  in pm8941_reboot_notify()
119 		dev_err(pwrkey->dev, "unable to re-set enable: %d\n", error);  in pm8941_reboot_notify()
130 	error = regmap_read(pwrkey->regmap,  in pm8941_pwrkey_irq()
131 			    pwrkey->baseaddr + PON_RT_STS, &sts);  in pm8941_pwrkey_irq()
135 	input_report_key(pwrkey->input, pwrkey->code,  in pm8941_pwrkey_irq()
136 			 sts & pwrkey->data->status_bit);  in pm8941_pwrkey_irq()
137 	input_sync(pwrkey->input);  in pm8941_pwrkey_irq()
147 		enable_irq_wake(pwrkey->irq);  in pm8941_pwrkey_suspend()
157 		disable_irq_wake(pwrkey->irq);  in pm8941_pwrkey_resume()
173 	if (of_property_read_u32(pdev->dev.of_node, "debounce", &req_delay))  in pm8941_pwrkey_probe()
177 		dev_err(&pdev->dev, "invalid debounce time: %u\n", req_delay);  in pm8941_pwrkey_probe()
178 		return -EINVAL;  in pm8941_pwrkey_probe()
181 	pull_up = of_property_read_bool(pdev->dev.of_node, "bias-pull-up");  in pm8941_pwrkey_probe()
183 	pwrkey = devm_kzalloc(&pdev->dev, sizeof(*pwrkey), GFP_KERNEL);  in pm8941_pwrkey_probe()
185 		return -ENOMEM;  in pm8941_pwrkey_probe()
187 	pwrkey->dev = &pdev->dev;  in pm8941_pwrkey_probe()
188 	pwrkey->data = of_device_get_match_data(&pdev->dev);  in pm8941_pwrkey_probe()
190 	parent = pdev->dev.parent;  in pm8941_pwrkey_probe()
191 	pwrkey->regmap = dev_get_regmap(parent, NULL);  in pm8941_pwrkey_probe()
192 	if (!pwrkey->regmap) {  in pm8941_pwrkey_probe()
198 		pwrkey->regmap = dev_get_regmap(parent->parent, NULL);  in pm8941_pwrkey_probe()
199 		if (!pwrkey->regmap) {  in pm8941_pwrkey_probe()
200 			dev_err(&pdev->dev, "failed to locate regmap\n");  in pm8941_pwrkey_probe()
201 			return -ENODEV;  in pm8941_pwrkey_probe()
204 		error = of_property_read_u32(parent->of_node,  in pm8941_pwrkey_probe()
205 					     "reg", &pwrkey->baseaddr);  in pm8941_pwrkey_probe()
207 		error = of_property_read_u32(pdev->dev.of_node, "reg",  in pm8941_pwrkey_probe()
208 					     &pwrkey->baseaddr);  in pm8941_pwrkey_probe()
213 	pwrkey->irq = platform_get_irq(pdev, 0);  in pm8941_pwrkey_probe()
214 	if (pwrkey->irq < 0)  in pm8941_pwrkey_probe()
215 		return pwrkey->irq;  in pm8941_pwrkey_probe()
217 	error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_REV2,  in pm8941_pwrkey_probe()
218 			    &pwrkey->revision);  in pm8941_pwrkey_probe()
220 		dev_err(&pdev->dev, "failed to set debounce: %d\n", error);  in pm8941_pwrkey_probe()
224 	error = of_property_read_u32(pdev->dev.of_node, "linux,code",  in pm8941_pwrkey_probe()
225 				     &pwrkey->code);  in pm8941_pwrkey_probe()
227 		dev_dbg(&pdev->dev,  in pm8941_pwrkey_probe()
229 		pwrkey->code = KEY_POWER;  in pm8941_pwrkey_probe()
232 	pwrkey->input = devm_input_allocate_device(&pdev->dev);  in pm8941_pwrkey_probe()
233 	if (!pwrkey->input) {  in pm8941_pwrkey_probe()
234 		dev_dbg(&pdev->dev, "unable to allocate input device\n");  in pm8941_pwrkey_probe()
235 		return -ENOMEM;  in pm8941_pwrkey_probe()
238 	input_set_capability(pwrkey->input, EV_KEY, pwrkey->code);  in pm8941_pwrkey_probe()
240 	pwrkey->input->name = pwrkey->data->name;  in pm8941_pwrkey_probe()
241 	pwrkey->input->phys = pwrkey->data->phys;  in pm8941_pwrkey_probe()
243 	if (pwrkey->data->supports_debounce_config) {  in pm8941_pwrkey_probe()
247 		error = regmap_update_bits(pwrkey->regmap,  in pm8941_pwrkey_probe()
248 					   pwrkey->baseaddr + PON_DBC_CTL,  in pm8941_pwrkey_probe()
252 			dev_err(&pdev->dev, "failed to set debounce: %d\n",  in pm8941_pwrkey_probe()
258 	if (pwrkey->data->pull_up_bit) {  in pm8941_pwrkey_probe()
259 		error = regmap_update_bits(pwrkey->regmap,  in pm8941_pwrkey_probe()
260 					   pwrkey->baseaddr + PON_PULL_CTL,  in pm8941_pwrkey_probe()
261 					   pwrkey->data->pull_up_bit,  in pm8941_pwrkey_probe()
262 					   pull_up ? pwrkey->data->pull_up_bit :  in pm8941_pwrkey_probe()
265 			dev_err(&pdev->dev, "failed to set pull: %d\n", error);  in pm8941_pwrkey_probe()
270 	error = devm_request_threaded_irq(&pdev->dev, pwrkey->irq,  in pm8941_pwrkey_probe()
273 					  pwrkey->data->name, pwrkey);  in pm8941_pwrkey_probe()
275 		dev_err(&pdev->dev, "failed requesting IRQ: %d\n", error);  in pm8941_pwrkey_probe()
279 	error = input_register_device(pwrkey->input);  in pm8941_pwrkey_probe()
281 		dev_err(&pdev->dev, "failed to register input device: %d\n",  in pm8941_pwrkey_probe()
286 	if (pwrkey->data->supports_ps_hold_poff_config) {  in pm8941_pwrkey_probe()
287 		pwrkey->reboot_notifier.notifier_call = pm8941_reboot_notify;  in pm8941_pwrkey_probe()
288 		error = register_reboot_notifier(&pwrkey->reboot_notifier);  in pm8941_pwrkey_probe()
290 			dev_err(&pdev->dev, "failed to register reboot notifier: %d\n",  in pm8941_pwrkey_probe()
297 	device_init_wakeup(&pdev->dev, 1);  in pm8941_pwrkey_probe()
306 	if (pwrkey->data->supports_ps_hold_poff_config)  in pm8941_pwrkey_remove()
307 		unregister_reboot_notifier(&pwrkey->reboot_notifier);  in pm8941_pwrkey_remove()
347 	{ .compatible = "qcom,pm8941-pwrkey", .data = &pwrkey_data },
348 	{ .compatible = "qcom,pm8941-resin", .data = &resin_data },
349 	{ .compatible = "qcom,pmk8350-pwrkey", .data = &pon_gen3_pwrkey_data },
350 	{ .compatible = "qcom,pmk8350-resin", .data = &pon_gen3_resin_data },
359 		.name = "pm8941-pwrkey",
366 MODULE_DESCRIPTION("PM8941 Power Key driver");