1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems
  4 *
  5 * Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
 
 
  6 */
 
  7#include <linux/pm.h>
  8#include <linux/pm_runtime.h>
  9#include <linux/export.h>
 10
 11#ifdef CONFIG_PM
 12/**
 13 * pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
 14 * @dev: Device to suspend.
 15 *
 16 * If PM operations are defined for the @dev's driver and they include
 17 * ->runtime_suspend(), execute it and return its error code.  Otherwise,
 18 * return 0.
 19 */
 20int pm_generic_runtime_suspend(struct device *dev)
 21{
 22	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 23	int ret;
 24
 25	ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : 0;
 26
 27	return ret;
 28}
 29EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend);
 30
 31/**
 32 * pm_generic_runtime_resume - Generic runtime resume callback for subsystems.
 33 * @dev: Device to resume.
 34 *
 35 * If PM operations are defined for the @dev's driver and they include
 36 * ->runtime_resume(), execute it and return its error code.  Otherwise,
 37 * return 0.
 38 */
 39int pm_generic_runtime_resume(struct device *dev)
 40{
 41	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 42	int ret;
 43
 44	ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : 0;
 45
 46	return ret;
 47}
 48EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);
 49#endif /* CONFIG_PM */
 50
 51#ifdef CONFIG_PM_SLEEP
 52/**
 53 * pm_generic_prepare - Generic routine preparing a device for power transition.
 54 * @dev: Device to prepare.
 55 *
 56 * Prepare a device for a system-wide power transition.
 57 */
 58int pm_generic_prepare(struct device *dev)
 59{
 60	struct device_driver *drv = dev->driver;
 61	int ret = 0;
 62
 63	if (drv && drv->pm && drv->pm->prepare)
 64		ret = drv->pm->prepare(dev);
 65
 66	return ret;
 67}
 68
 69/**
 70 * pm_generic_suspend_noirq - Generic suspend_noirq callback for subsystems.
 71 * @dev: Device to suspend.
 72 */
 73int pm_generic_suspend_noirq(struct device *dev)
 74{
 75	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 76
 77	return pm && pm->suspend_noirq ? pm->suspend_noirq(dev) : 0;
 78}
 79EXPORT_SYMBOL_GPL(pm_generic_suspend_noirq);
 80
 81/**
 82 * pm_generic_suspend_late - Generic suspend_late callback for subsystems.
 83 * @dev: Device to suspend.
 84 */
 85int pm_generic_suspend_late(struct device *dev)
 86{
 87	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 88
 89	return pm && pm->suspend_late ? pm->suspend_late(dev) : 0;
 90}
 91EXPORT_SYMBOL_GPL(pm_generic_suspend_late);
 92
 93/**
 94 * pm_generic_suspend - Generic suspend callback for subsystems.
 95 * @dev: Device to suspend.
 96 */
 97int pm_generic_suspend(struct device *dev)
 98{
 99	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
100
101	return pm && pm->suspend ? pm->suspend(dev) : 0;
102}
103EXPORT_SYMBOL_GPL(pm_generic_suspend);
104
105/**
106 * pm_generic_freeze_noirq - Generic freeze_noirq callback for subsystems.
107 * @dev: Device to freeze.
108 */
109int pm_generic_freeze_noirq(struct device *dev)
110{
111	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
112
113	return pm && pm->freeze_noirq ? pm->freeze_noirq(dev) : 0;
114}
115EXPORT_SYMBOL_GPL(pm_generic_freeze_noirq);
116
117/**
118 * pm_generic_freeze_late - Generic freeze_late callback for subsystems.
119 * @dev: Device to freeze.
120 */
121int pm_generic_freeze_late(struct device *dev)
122{
123	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
124
125	return pm && pm->freeze_late ? pm->freeze_late(dev) : 0;
126}
127EXPORT_SYMBOL_GPL(pm_generic_freeze_late);
128
129/**
130 * pm_generic_freeze - Generic freeze callback for subsystems.
131 * @dev: Device to freeze.
132 */
133int pm_generic_freeze(struct device *dev)
134{
135	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
136
137	return pm && pm->freeze ? pm->freeze(dev) : 0;
138}
139EXPORT_SYMBOL_GPL(pm_generic_freeze);
140
141/**
142 * pm_generic_poweroff_noirq - Generic poweroff_noirq callback for subsystems.
143 * @dev: Device to handle.
144 */
145int pm_generic_poweroff_noirq(struct device *dev)
146{
147	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
148
149	return pm && pm->poweroff_noirq ? pm->poweroff_noirq(dev) : 0;
150}
151EXPORT_SYMBOL_GPL(pm_generic_poweroff_noirq);
152
153/**
154 * pm_generic_poweroff_late - Generic poweroff_late callback for subsystems.
155 * @dev: Device to handle.
156 */
157int pm_generic_poweroff_late(struct device *dev)
158{
159	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
160
161	return pm && pm->poweroff_late ? pm->poweroff_late(dev) : 0;
162}
163EXPORT_SYMBOL_GPL(pm_generic_poweroff_late);
164
165/**
166 * pm_generic_poweroff - Generic poweroff callback for subsystems.
167 * @dev: Device to handle.
168 */
169int pm_generic_poweroff(struct device *dev)
170{
171	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
172
173	return pm && pm->poweroff ? pm->poweroff(dev) : 0;
174}
175EXPORT_SYMBOL_GPL(pm_generic_poweroff);
176
177/**
178 * pm_generic_thaw_noirq - Generic thaw_noirq callback for subsystems.
179 * @dev: Device to thaw.
180 */
181int pm_generic_thaw_noirq(struct device *dev)
182{
183	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
184
185	return pm && pm->thaw_noirq ? pm->thaw_noirq(dev) : 0;
186}
187EXPORT_SYMBOL_GPL(pm_generic_thaw_noirq);
188
189/**
190 * pm_generic_thaw_early - Generic thaw_early callback for subsystems.
191 * @dev: Device to thaw.
192 */
193int pm_generic_thaw_early(struct device *dev)
194{
195	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
196
197	return pm && pm->thaw_early ? pm->thaw_early(dev) : 0;
198}
199EXPORT_SYMBOL_GPL(pm_generic_thaw_early);
200
201/**
202 * pm_generic_thaw - Generic thaw callback for subsystems.
203 * @dev: Device to thaw.
204 */
205int pm_generic_thaw(struct device *dev)
206{
207	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
208
209	return pm && pm->thaw ? pm->thaw(dev) : 0;
210}
211EXPORT_SYMBOL_GPL(pm_generic_thaw);
212
213/**
214 * pm_generic_resume_noirq - Generic resume_noirq callback for subsystems.
215 * @dev: Device to resume.
216 */
217int pm_generic_resume_noirq(struct device *dev)
218{
219	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
220
221	return pm && pm->resume_noirq ? pm->resume_noirq(dev) : 0;
222}
223EXPORT_SYMBOL_GPL(pm_generic_resume_noirq);
224
225/**
226 * pm_generic_resume_early - Generic resume_early callback for subsystems.
227 * @dev: Device to resume.
228 */
229int pm_generic_resume_early(struct device *dev)
230{
231	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
232
233	return pm && pm->resume_early ? pm->resume_early(dev) : 0;
234}
235EXPORT_SYMBOL_GPL(pm_generic_resume_early);
236
237/**
238 * pm_generic_resume - Generic resume callback for subsystems.
239 * @dev: Device to resume.
240 */
241int pm_generic_resume(struct device *dev)
242{
243	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
244
245	return pm && pm->resume ? pm->resume(dev) : 0;
246}
247EXPORT_SYMBOL_GPL(pm_generic_resume);
248
249/**
250 * pm_generic_restore_noirq - Generic restore_noirq callback for subsystems.
251 * @dev: Device to restore.
252 */
253int pm_generic_restore_noirq(struct device *dev)
254{
255	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
256
257	return pm && pm->restore_noirq ? pm->restore_noirq(dev) : 0;
258}
259EXPORT_SYMBOL_GPL(pm_generic_restore_noirq);
260
261/**
262 * pm_generic_restore_early - Generic restore_early callback for subsystems.
263 * @dev: Device to resume.
264 */
265int pm_generic_restore_early(struct device *dev)
266{
267	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
268
269	return pm && pm->restore_early ? pm->restore_early(dev) : 0;
270}
271EXPORT_SYMBOL_GPL(pm_generic_restore_early);
272
273/**
274 * pm_generic_restore - Generic restore callback for subsystems.
275 * @dev: Device to restore.
276 */
277int pm_generic_restore(struct device *dev)
278{
279	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
280
281	return pm && pm->restore ? pm->restore(dev) : 0;
282}
283EXPORT_SYMBOL_GPL(pm_generic_restore);
284
285/**
286 * pm_generic_complete - Generic routine completing a device power transition.
287 * @dev: Device to handle.
288 *
289 * Complete a device power transition during a system-wide power transition.
290 */
291void pm_generic_complete(struct device *dev)
292{
293	struct device_driver *drv = dev->driver;
294
295	if (drv && drv->pm && drv->pm->complete)
296		drv->pm->complete(dev);
 
 
 
 
 
 
297}
298#endif /* CONFIG_PM_SLEEP */

 
  1/*
  2 * drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems
  3 *
  4 * Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
  5 *
  6 * This file is released under the GPLv2.
  7 */
  8
  9#include <linux/pm.h>
 10#include <linux/pm_runtime.h>
 11#include <linux/export.h>
 12
 13#ifdef CONFIG_PM
 14/**
 15 * pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
 16 * @dev: Device to suspend.
 17 *
 18 * If PM operations are defined for the @dev's driver and they include
 19 * ->runtime_suspend(), execute it and return its error code.  Otherwise,
 20 * return 0.
 21 */
 22int pm_generic_runtime_suspend(struct device *dev)
 23{
 24	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 25	int ret;
 26
 27	ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : 0;
 28
 29	return ret;
 30}
 31EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend);
 32
 33/**
 34 * pm_generic_runtime_resume - Generic runtime resume callback for subsystems.
 35 * @dev: Device to resume.
 36 *
 37 * If PM operations are defined for the @dev's driver and they include
 38 * ->runtime_resume(), execute it and return its error code.  Otherwise,
 39 * return 0.
 40 */
 41int pm_generic_runtime_resume(struct device *dev)
 42{
 43	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 44	int ret;
 45
 46	ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : 0;
 47
 48	return ret;
 49}
 50EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);
 51#endif /* CONFIG_PM */
 52
 53#ifdef CONFIG_PM_SLEEP
 54/**
 55 * pm_generic_prepare - Generic routine preparing a device for power transition.
 56 * @dev: Device to prepare.
 57 *
 58 * Prepare a device for a system-wide power transition.
 59 */
 60int pm_generic_prepare(struct device *dev)
 61{
 62	struct device_driver *drv = dev->driver;
 63	int ret = 0;
 64
 65	if (drv && drv->pm && drv->pm->prepare)
 66		ret = drv->pm->prepare(dev);
 67
 68	return ret;
 69}
 70
 71/**
 72 * pm_generic_suspend_noirq - Generic suspend_noirq callback for subsystems.
 73 * @dev: Device to suspend.
 74 */
 75int pm_generic_suspend_noirq(struct device *dev)
 76{
 77	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 78
 79	return pm && pm->suspend_noirq ? pm->suspend_noirq(dev) : 0;
 80}
 81EXPORT_SYMBOL_GPL(pm_generic_suspend_noirq);
 82
 83/**
 84 * pm_generic_suspend_late - Generic suspend_late callback for subsystems.
 85 * @dev: Device to suspend.
 86 */
 87int pm_generic_suspend_late(struct device *dev)
 88{
 89	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
 90
 91	return pm && pm->suspend_late ? pm->suspend_late(dev) : 0;
 92}
 93EXPORT_SYMBOL_GPL(pm_generic_suspend_late);
 94
 95/**
 96 * pm_generic_suspend - Generic suspend callback for subsystems.
 97 * @dev: Device to suspend.
 98 */
 99int pm_generic_suspend(struct device *dev)
100{
101	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
102
103	return pm && pm->suspend ? pm->suspend(dev) : 0;
104}
105EXPORT_SYMBOL_GPL(pm_generic_suspend);
106
107/**
108 * pm_generic_freeze_noirq - Generic freeze_noirq callback for subsystems.
109 * @dev: Device to freeze.
110 */
111int pm_generic_freeze_noirq(struct device *dev)
112{
113	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
114
115	return pm && pm->freeze_noirq ? pm->freeze_noirq(dev) : 0;
116}
117EXPORT_SYMBOL_GPL(pm_generic_freeze_noirq);
118
119/**
120 * pm_generic_freeze_late - Generic freeze_late callback for subsystems.
121 * @dev: Device to freeze.
122 */
123int pm_generic_freeze_late(struct device *dev)
124{
125	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
126
127	return pm && pm->freeze_late ? pm->freeze_late(dev) : 0;
128}
129EXPORT_SYMBOL_GPL(pm_generic_freeze_late);
130
131/**
132 * pm_generic_freeze - Generic freeze callback for subsystems.
133 * @dev: Device to freeze.
134 */
135int pm_generic_freeze(struct device *dev)
136{
137	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
138
139	return pm && pm->freeze ? pm->freeze(dev) : 0;
140}
141EXPORT_SYMBOL_GPL(pm_generic_freeze);
142
143/**
144 * pm_generic_poweroff_noirq - Generic poweroff_noirq callback for subsystems.
145 * @dev: Device to handle.
146 */
147int pm_generic_poweroff_noirq(struct device *dev)
148{
149	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
150
151	return pm && pm->poweroff_noirq ? pm->poweroff_noirq(dev) : 0;
152}
153EXPORT_SYMBOL_GPL(pm_generic_poweroff_noirq);
154
155/**
156 * pm_generic_poweroff_late - Generic poweroff_late callback for subsystems.
157 * @dev: Device to handle.
158 */
159int pm_generic_poweroff_late(struct device *dev)
160{
161	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
162
163	return pm && pm->poweroff_late ? pm->poweroff_late(dev) : 0;
164}
165EXPORT_SYMBOL_GPL(pm_generic_poweroff_late);
166
167/**
168 * pm_generic_poweroff - Generic poweroff callback for subsystems.
169 * @dev: Device to handle.
170 */
171int pm_generic_poweroff(struct device *dev)
172{
173	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
174
175	return pm && pm->poweroff ? pm->poweroff(dev) : 0;
176}
177EXPORT_SYMBOL_GPL(pm_generic_poweroff);
178
179/**
180 * pm_generic_thaw_noirq - Generic thaw_noirq callback for subsystems.
181 * @dev: Device to thaw.
182 */
183int pm_generic_thaw_noirq(struct device *dev)
184{
185	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
186
187	return pm && pm->thaw_noirq ? pm->thaw_noirq(dev) : 0;
188}
189EXPORT_SYMBOL_GPL(pm_generic_thaw_noirq);
190
191/**
192 * pm_generic_thaw_early - Generic thaw_early callback for subsystems.
193 * @dev: Device to thaw.
194 */
195int pm_generic_thaw_early(struct device *dev)
196{
197	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
198
199	return pm && pm->thaw_early ? pm->thaw_early(dev) : 0;
200}
201EXPORT_SYMBOL_GPL(pm_generic_thaw_early);
202
203/**
204 * pm_generic_thaw - Generic thaw callback for subsystems.
205 * @dev: Device to thaw.
206 */
207int pm_generic_thaw(struct device *dev)
208{
209	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
210
211	return pm && pm->thaw ? pm->thaw(dev) : 0;
212}
213EXPORT_SYMBOL_GPL(pm_generic_thaw);
214
215/**
216 * pm_generic_resume_noirq - Generic resume_noirq callback for subsystems.
217 * @dev: Device to resume.
218 */
219int pm_generic_resume_noirq(struct device *dev)
220{
221	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
222
223	return pm && pm->resume_noirq ? pm->resume_noirq(dev) : 0;
224}
225EXPORT_SYMBOL_GPL(pm_generic_resume_noirq);
226
227/**
228 * pm_generic_resume_early - Generic resume_early callback for subsystems.
229 * @dev: Device to resume.
230 */
231int pm_generic_resume_early(struct device *dev)
232{
233	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
234
235	return pm && pm->resume_early ? pm->resume_early(dev) : 0;
236}
237EXPORT_SYMBOL_GPL(pm_generic_resume_early);
238
239/**
240 * pm_generic_resume - Generic resume callback for subsystems.
241 * @dev: Device to resume.
242 */
243int pm_generic_resume(struct device *dev)
244{
245	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
246
247	return pm && pm->resume ? pm->resume(dev) : 0;
248}
249EXPORT_SYMBOL_GPL(pm_generic_resume);
250
251/**
252 * pm_generic_restore_noirq - Generic restore_noirq callback for subsystems.
253 * @dev: Device to restore.
254 */
255int pm_generic_restore_noirq(struct device *dev)
256{
257	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
258
259	return pm && pm->restore_noirq ? pm->restore_noirq(dev) : 0;
260}
261EXPORT_SYMBOL_GPL(pm_generic_restore_noirq);
262
263/**
264 * pm_generic_restore_early - Generic restore_early callback for subsystems.
265 * @dev: Device to resume.
266 */
267int pm_generic_restore_early(struct device *dev)
268{
269	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
270
271	return pm && pm->restore_early ? pm->restore_early(dev) : 0;
272}
273EXPORT_SYMBOL_GPL(pm_generic_restore_early);
274
275/**
276 * pm_generic_restore - Generic restore callback for subsystems.
277 * @dev: Device to restore.
278 */
279int pm_generic_restore(struct device *dev)
280{
281	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
282
283	return pm && pm->restore ? pm->restore(dev) : 0;
284}
285EXPORT_SYMBOL_GPL(pm_generic_restore);
286
287/**
288 * pm_generic_complete - Generic routine completing a device power transition.
289 * @dev: Device to handle.
290 *
291 * Complete a device power transition during a system-wide power transition.
292 */
293void pm_generic_complete(struct device *dev)
294{
295	struct device_driver *drv = dev->driver;
296
297	if (drv && drv->pm && drv->pm->complete)
298		drv->pm->complete(dev);
299
300	/*
301	 * Let runtime PM try to suspend devices that haven't been in use before
302	 * going into the system-wide sleep state we're resuming from.
303	 */
304	pm_request_idle(dev);
305}
306#endif /* CONFIG_PM_SLEEP */