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1da177e4 LT |
1 | /* |
2 | * (C) Copyright David Brownell 2000-2002 | |
34bbe4c1 | 3 | * |
1da177e4 LT |
4 | * This program is free software; you can redistribute it and/or modify it |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software Foundation, | |
16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
1da177e4 LT |
19 | #include <linux/kernel.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/pci.h> | |
6d19c009 | 22 | #include <linux/pm_runtime.h> |
21b1861f | 23 | #include <linux/usb.h> |
27729aad | 24 | #include <linux/usb/hcd.h> |
21b1861f | 25 | |
1da177e4 LT |
26 | #include <asm/io.h> |
27 | #include <asm/irq.h> | |
21b1861f DB |
28 | |
29 | #ifdef CONFIG_PPC_PMAC | |
30 | #include <asm/machdep.h> | |
31 | #include <asm/pmac_feature.h> | |
32 | #include <asm/pci-bridge.h> | |
33 | #include <asm/prom.h> | |
34 | #endif | |
5f827ea3 DB |
35 | |
36 | #include "usb.h" | |
1da177e4 LT |
37 | |
38 | ||
c6053ecf | 39 | /* PCI-based HCs are common, but plenty of non-PCI HCs are used too */ |
1da177e4 | 40 | |
6d19c009 AS |
41 | #ifdef CONFIG_PM_SLEEP |
42 | ||
43 | /* Coordinate handoffs between EHCI and companion controllers | |
44 | * during system resume | |
45 | */ | |
46 | ||
47 | static DEFINE_MUTEX(companions_mutex); | |
48 | ||
49 | #define CL_UHCI PCI_CLASS_SERIAL_USB_UHCI | |
50 | #define CL_OHCI PCI_CLASS_SERIAL_USB_OHCI | |
51 | #define CL_EHCI PCI_CLASS_SERIAL_USB_EHCI | |
52 | ||
53 | enum companion_action { | |
54 | SET_HS_COMPANION, CLEAR_HS_COMPANION, WAIT_FOR_COMPANIONS | |
55 | }; | |
56 | ||
57 | static void companion_common(struct pci_dev *pdev, struct usb_hcd *hcd, | |
58 | enum companion_action action) | |
59 | { | |
60 | struct pci_dev *companion; | |
61 | struct usb_hcd *companion_hcd; | |
62 | unsigned int slot = PCI_SLOT(pdev->devfn); | |
63 | ||
64 | /* Iterate through other PCI functions in the same slot. | |
65 | * If pdev is OHCI or UHCI then we are looking for EHCI, and | |
66 | * vice versa. | |
67 | */ | |
68 | companion = NULL; | |
402e8dd6 | 69 | for_each_pci_dev(companion) { |
6d19c009 AS |
70 | if (companion->bus != pdev->bus || |
71 | PCI_SLOT(companion->devfn) != slot) | |
72 | continue; | |
73 | ||
74 | companion_hcd = pci_get_drvdata(companion); | |
75 | if (!companion_hcd) | |
76 | continue; | |
77 | ||
78 | /* For SET_HS_COMPANION, store a pointer to the EHCI bus in | |
79 | * the OHCI/UHCI companion bus structure. | |
80 | * For CLEAR_HS_COMPANION, clear the pointer to the EHCI bus | |
81 | * in the OHCI/UHCI companion bus structure. | |
82 | * For WAIT_FOR_COMPANIONS, wait until the OHCI/UHCI | |
83 | * companion controllers have fully resumed. | |
84 | */ | |
85 | ||
86 | if ((pdev->class == CL_OHCI || pdev->class == CL_UHCI) && | |
87 | companion->class == CL_EHCI) { | |
88 | /* action must be SET_HS_COMPANION */ | |
89 | dev_dbg(&companion->dev, "HS companion for %s\n", | |
90 | dev_name(&pdev->dev)); | |
91 | hcd->self.hs_companion = &companion_hcd->self; | |
92 | ||
93 | } else if (pdev->class == CL_EHCI && | |
94 | (companion->class == CL_OHCI || | |
95 | companion->class == CL_UHCI)) { | |
96 | switch (action) { | |
97 | case SET_HS_COMPANION: | |
98 | dev_dbg(&pdev->dev, "HS companion for %s\n", | |
99 | dev_name(&companion->dev)); | |
100 | companion_hcd->self.hs_companion = &hcd->self; | |
101 | break; | |
102 | case CLEAR_HS_COMPANION: | |
103 | companion_hcd->self.hs_companion = NULL; | |
104 | break; | |
105 | case WAIT_FOR_COMPANIONS: | |
106 | device_pm_wait_for_dev(&pdev->dev, | |
107 | &companion->dev); | |
108 | break; | |
109 | } | |
110 | } | |
111 | } | |
112 | } | |
113 | ||
114 | static void set_hs_companion(struct pci_dev *pdev, struct usb_hcd *hcd) | |
115 | { | |
116 | mutex_lock(&companions_mutex); | |
117 | dev_set_drvdata(&pdev->dev, hcd); | |
118 | companion_common(pdev, hcd, SET_HS_COMPANION); | |
119 | mutex_unlock(&companions_mutex); | |
120 | } | |
121 | ||
122 | static void clear_hs_companion(struct pci_dev *pdev, struct usb_hcd *hcd) | |
123 | { | |
124 | mutex_lock(&companions_mutex); | |
125 | dev_set_drvdata(&pdev->dev, NULL); | |
126 | ||
127 | /* If pdev is OHCI or UHCI, just clear its hs_companion pointer */ | |
128 | if (pdev->class == CL_OHCI || pdev->class == CL_UHCI) | |
129 | hcd->self.hs_companion = NULL; | |
130 | ||
131 | /* Otherwise search for companion buses and clear their pointers */ | |
132 | else | |
133 | companion_common(pdev, hcd, CLEAR_HS_COMPANION); | |
134 | mutex_unlock(&companions_mutex); | |
135 | } | |
136 | ||
137 | static void wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd) | |
138 | { | |
139 | /* Only EHCI controllers need to wait. | |
140 | * No locking is needed because a controller cannot be resumed | |
141 | * while one of its companions is getting unbound. | |
142 | */ | |
143 | if (pdev->class == CL_EHCI) | |
144 | companion_common(pdev, hcd, WAIT_FOR_COMPANIONS); | |
145 | } | |
146 | ||
147 | #else /* !CONFIG_PM_SLEEP */ | |
148 | ||
149 | static inline void set_hs_companion(struct pci_dev *d, struct usb_hcd *h) {} | |
150 | static inline void clear_hs_companion(struct pci_dev *d, struct usb_hcd *h) {} | |
151 | static inline void wait_for_companions(struct pci_dev *d, struct usb_hcd *h) {} | |
152 | ||
153 | #endif /* !CONFIG_PM_SLEEP */ | |
1da177e4 LT |
154 | |
155 | /*-------------------------------------------------------------------------*/ | |
156 | ||
157 | /* configure so an HC device and id are always provided */ | |
158 | /* always called with process context; sleeping is OK */ | |
159 | ||
160 | /** | |
161 | * usb_hcd_pci_probe - initialize PCI-based HCDs | |
162 | * @dev: USB Host Controller being probed | |
163 | * @id: pci hotplug id connecting controller to HCD framework | |
164 | * Context: !in_interrupt() | |
165 | * | |
166 | * Allocates basic PCI resources for this USB host controller, and | |
167 | * then invokes the start() method for the HCD associated with it | |
168 | * through the hotplug entry's driver_data. | |
169 | * | |
170 | * Store this function in the HCD's struct pci_driver as probe(). | |
171 | */ | |
34bbe4c1 | 172 | int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) |
1da177e4 LT |
173 | { |
174 | struct hc_driver *driver; | |
175 | struct usb_hcd *hcd; | |
176 | int retval; | |
177 | ||
178 | if (usb_disabled()) | |
179 | return -ENODEV; | |
180 | ||
34bbe4c1 GKH |
181 | if (!id) |
182 | return -EINVAL; | |
183 | driver = (struct hc_driver *)id->driver_data; | |
184 | if (!driver) | |
1da177e4 LT |
185 | return -EINVAL; |
186 | ||
34bbe4c1 | 187 | if (pci_enable_device(dev) < 0) |
1da177e4 | 188 | return -ENODEV; |
c6053ecf | 189 | dev->current_state = PCI_D0; |
34bbe4c1 GKH |
190 | |
191 | if (!dev->irq) { | |
192 | dev_err(&dev->dev, | |
1da177e4 LT |
193 | "Found HC with no IRQ. Check BIOS/PCI %s setup!\n", |
194 | pci_name(dev)); | |
34bbe4c1 | 195 | retval = -ENODEV; |
1da177e4 | 196 | goto err1; |
34bbe4c1 | 197 | } |
1da177e4 | 198 | |
34bbe4c1 | 199 | hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev)); |
1da177e4 LT |
200 | if (!hcd) { |
201 | retval = -ENOMEM; | |
202 | goto err1; | |
203 | } | |
204 | ||
34bbe4c1 GKH |
205 | if (driver->flags & HCD_MEMORY) { |
206 | /* EHCI, OHCI */ | |
207 | hcd->rsrc_start = pci_resource_start(dev, 0); | |
208 | hcd->rsrc_len = pci_resource_len(dev, 0); | |
209 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, | |
1da177e4 | 210 | driver->description)) { |
34bbe4c1 | 211 | dev_dbg(&dev->dev, "controller already in use\n"); |
1da177e4 LT |
212 | retval = -EBUSY; |
213 | goto err2; | |
214 | } | |
34bbe4c1 | 215 | hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); |
1da177e4 | 216 | if (hcd->regs == NULL) { |
34bbe4c1 | 217 | dev_dbg(&dev->dev, "error mapping memory\n"); |
1da177e4 LT |
218 | retval = -EFAULT; |
219 | goto err3; | |
220 | } | |
221 | ||
34bbe4c1 GKH |
222 | } else { |
223 | /* UHCI */ | |
1da177e4 LT |
224 | int region; |
225 | ||
226 | for (region = 0; region < PCI_ROM_RESOURCE; region++) { | |
34bbe4c1 | 227 | if (!(pci_resource_flags(dev, region) & |
1da177e4 LT |
228 | IORESOURCE_IO)) |
229 | continue; | |
230 | ||
34bbe4c1 GKH |
231 | hcd->rsrc_start = pci_resource_start(dev, region); |
232 | hcd->rsrc_len = pci_resource_len(dev, region); | |
233 | if (request_region(hcd->rsrc_start, hcd->rsrc_len, | |
1da177e4 LT |
234 | driver->description)) |
235 | break; | |
236 | } | |
237 | if (region == PCI_ROM_RESOURCE) { | |
34bbe4c1 | 238 | dev_dbg(&dev->dev, "no i/o regions available\n"); |
1da177e4 | 239 | retval = -EBUSY; |
6d19c009 | 240 | goto err2; |
1da177e4 LT |
241 | } |
242 | } | |
243 | ||
34bbe4c1 | 244 | pci_set_master(dev); |
1da177e4 | 245 | |
442258e2 | 246 | retval = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED); |
1da177e4 LT |
247 | if (retval != 0) |
248 | goto err4; | |
6d19c009 | 249 | set_hs_companion(dev, hcd); |
3da7cff4 AS |
250 | |
251 | if (pci_dev_run_wake(dev)) | |
252 | pm_runtime_put_noidle(&dev->dev); | |
1da177e4 LT |
253 | return retval; |
254 | ||
255 | err4: | |
256 | if (driver->flags & HCD_MEMORY) { | |
34bbe4c1 | 257 | iounmap(hcd->regs); |
1da177e4 | 258 | err3: |
34bbe4c1 | 259 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
1da177e4 | 260 | } else |
34bbe4c1 | 261 | release_region(hcd->rsrc_start, hcd->rsrc_len); |
1da177e4 | 262 | err2: |
6d19c009 | 263 | clear_hs_companion(dev, hcd); |
34bbe4c1 | 264 | usb_put_hcd(hcd); |
1da177e4 | 265 | err1: |
34bbe4c1 GKH |
266 | pci_disable_device(dev); |
267 | dev_err(&dev->dev, "init %s fail, %d\n", pci_name(dev), retval); | |
1da177e4 | 268 | return retval; |
34bbe4c1 | 269 | } |
782e70c6 | 270 | EXPORT_SYMBOL_GPL(usb_hcd_pci_probe); |
1da177e4 LT |
271 | |
272 | ||
273 | /* may be called without controller electrically present */ | |
274 | /* may be called with controller, bus, and devices active */ | |
275 | ||
276 | /** | |
277 | * usb_hcd_pci_remove - shutdown processing for PCI-based HCDs | |
278 | * @dev: USB Host Controller being removed | |
279 | * Context: !in_interrupt() | |
280 | * | |
281 | * Reverses the effect of usb_hcd_pci_probe(), first invoking | |
282 | * the HCD's stop() method. It is always called from a thread | |
283 | * context, normally "rmmod", "apmd", or something similar. | |
284 | * | |
285 | * Store this function in the HCD's struct pci_driver as remove(). | |
286 | */ | |
34bbe4c1 | 287 | void usb_hcd_pci_remove(struct pci_dev *dev) |
1da177e4 LT |
288 | { |
289 | struct usb_hcd *hcd; | |
290 | ||
291 | hcd = pci_get_drvdata(dev); | |
292 | if (!hcd) | |
293 | return; | |
294 | ||
3da7cff4 AS |
295 | if (pci_dev_run_wake(dev)) |
296 | pm_runtime_get_noresume(&dev->dev); | |
297 | ||
c548795a AS |
298 | /* Fake an interrupt request in order to give the driver a chance |
299 | * to test whether the controller hardware has been removed (e.g., | |
300 | * cardbus physical eject). | |
301 | */ | |
302 | local_irq_disable(); | |
303 | usb_hcd_irq(0, hcd); | |
304 | local_irq_enable(); | |
305 | ||
34bbe4c1 | 306 | usb_remove_hcd(hcd); |
1da177e4 | 307 | if (hcd->driver->flags & HCD_MEMORY) { |
34bbe4c1 GKH |
308 | iounmap(hcd->regs); |
309 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
1da177e4 | 310 | } else { |
34bbe4c1 | 311 | release_region(hcd->rsrc_start, hcd->rsrc_len); |
1da177e4 | 312 | } |
6d19c009 | 313 | clear_hs_companion(dev, hcd); |
34bbe4c1 | 314 | usb_put_hcd(hcd); |
1da177e4 LT |
315 | pci_disable_device(dev); |
316 | } | |
782e70c6 | 317 | EXPORT_SYMBOL_GPL(usb_hcd_pci_remove); |
1da177e4 | 318 | |
1da177e4 | 319 | /** |
abb30641 AS |
320 | * usb_hcd_pci_shutdown - shutdown host controller |
321 | * @dev: USB Host Controller being shutdown | |
1da177e4 | 322 | */ |
abb30641 AS |
323 | void usb_hcd_pci_shutdown(struct pci_dev *dev) |
324 | { | |
325 | struct usb_hcd *hcd; | |
326 | ||
327 | hcd = pci_get_drvdata(dev); | |
328 | if (!hcd) | |
329 | return; | |
330 | ||
3da7cff4 AS |
331 | if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags) && |
332 | hcd->driver->shutdown) | |
abb30641 AS |
333 | hcd->driver->shutdown(hcd); |
334 | } | |
335 | EXPORT_SYMBOL_GPL(usb_hcd_pci_shutdown); | |
336 | ||
3da7cff4 | 337 | #ifdef CONFIG_PM_OPS |
abb30641 | 338 | |
2138a1f1 AS |
339 | #ifdef CONFIG_PPC_PMAC |
340 | static void powermac_set_asic(struct pci_dev *pci_dev, int enable) | |
341 | { | |
342 | /* Enanble or disable ASIC clocks for USB */ | |
343 | if (machine_is(powermac)) { | |
344 | struct device_node *of_node; | |
345 | ||
346 | of_node = pci_device_to_OF_node(pci_dev); | |
347 | if (of_node) | |
348 | pmac_call_feature(PMAC_FTR_USB_ENABLE, | |
349 | of_node, 0, enable); | |
350 | } | |
351 | } | |
352 | ||
353 | #else | |
354 | ||
355 | static inline void powermac_set_asic(struct pci_dev *pci_dev, int enable) | |
356 | {} | |
357 | ||
358 | #endif /* CONFIG_PPC_PMAC */ | |
359 | ||
abb30641 AS |
360 | static int check_root_hub_suspended(struct device *dev) |
361 | { | |
362 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
363 | struct usb_hcd *hcd = pci_get_drvdata(pci_dev); | |
364 | ||
365 | if (!(hcd->state == HC_STATE_SUSPENDED || | |
366 | hcd->state == HC_STATE_HALT)) { | |
367 | dev_warn(dev, "Root hub is not suspended\n"); | |
368 | return -EBUSY; | |
369 | } | |
370 | return 0; | |
371 | } | |
372 | ||
3da7cff4 | 373 | static int suspend_common(struct device *dev, bool do_wakeup) |
1da177e4 | 374 | { |
abb30641 AS |
375 | struct pci_dev *pci_dev = to_pci_dev(dev); |
376 | struct usb_hcd *hcd = pci_get_drvdata(pci_dev); | |
377 | int retval; | |
1da177e4 | 378 | |
5f827ea3 DB |
379 | /* Root hub suspend should have stopped all downstream traffic, |
380 | * and all bus master traffic. And done so for both the interface | |
381 | * and the stub usb_device (which we check here). But maybe it | |
382 | * didn't; writing sysfs power/state files ignores such rules... | |
5f827ea3 | 383 | */ |
abb30641 AS |
384 | retval = check_root_hub_suspended(dev); |
385 | if (retval) | |
386 | return retval; | |
a0d4922d | 387 | |
7be7d741 | 388 | if (hcd->driver->pci_suspend) { |
ff2f0787 AS |
389 | /* Optimization: Don't suspend if a root-hub wakeup is |
390 | * pending and it would cause the HCD to wake up anyway. | |
391 | */ | |
392 | if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) | |
393 | return -EBUSY; | |
4147200d | 394 | retval = hcd->driver->pci_suspend(hcd, do_wakeup); |
7be7d741 | 395 | suspend_report_result(hcd->driver->pci_suspend, retval); |
ff2f0787 AS |
396 | |
397 | /* Check again in case wakeup raced with pci_suspend */ | |
398 | if (retval == 0 && do_wakeup && HCD_WAKEUP_PENDING(hcd)) { | |
399 | if (hcd->driver->pci_resume) | |
400 | hcd->driver->pci_resume(hcd, false); | |
401 | retval = -EBUSY; | |
402 | } | |
02669492 | 403 | if (retval) |
abb30641 | 404 | return retval; |
5f827ea3 DB |
405 | } |
406 | ||
abb30641 | 407 | synchronize_irq(pci_dev->irq); |
c6053ecf | 408 | |
a15d95a0 RW |
409 | /* Downstream ports from this root hub should already be quiesced, so |
410 | * there will be no DMA activity. Now we can shut down the upstream | |
abb30641 AS |
411 | * link (except maybe for PME# resume signaling). We'll enter a |
412 | * low power state during suspend_noirq, if the hardware allows. | |
a15d95a0 | 413 | */ |
abb30641 AS |
414 | pci_disable_device(pci_dev); |
415 | return retval; | |
416 | } | |
417 | ||
057c58bf AS |
418 | static int resume_common(struct device *dev, int event) |
419 | { | |
420 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
421 | struct usb_hcd *hcd = pci_get_drvdata(pci_dev); | |
422 | int retval; | |
423 | ||
424 | if (hcd->state != HC_STATE_SUSPENDED) { | |
425 | dev_dbg(dev, "can't resume, not suspended!\n"); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | retval = pci_enable_device(pci_dev); | |
430 | if (retval < 0) { | |
431 | dev_err(dev, "can't re-enable after resume, %d!\n", retval); | |
432 | return retval; | |
433 | } | |
434 | ||
435 | pci_set_master(pci_dev); | |
436 | ||
437 | clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags); | |
438 | ||
439 | if (hcd->driver->pci_resume) { | |
3da7cff4 AS |
440 | if (event != PM_EVENT_AUTO_RESUME) |
441 | wait_for_companions(pci_dev, hcd); | |
057c58bf AS |
442 | |
443 | retval = hcd->driver->pci_resume(hcd, | |
444 | event == PM_EVENT_RESTORE); | |
445 | if (retval) { | |
446 | dev_err(dev, "PCI post-resume error %d!\n", retval); | |
447 | usb_hc_died(hcd); | |
448 | } | |
449 | } | |
450 | return retval; | |
451 | } | |
452 | ||
3da7cff4 AS |
453 | #ifdef CONFIG_PM_SLEEP |
454 | ||
455 | static int hcd_pci_suspend(struct device *dev) | |
456 | { | |
457 | return suspend_common(dev, device_may_wakeup(dev)); | |
458 | } | |
459 | ||
abb30641 AS |
460 | static int hcd_pci_suspend_noirq(struct device *dev) |
461 | { | |
462 | struct pci_dev *pci_dev = to_pci_dev(dev); | |
463 | struct usb_hcd *hcd = pci_get_drvdata(pci_dev); | |
464 | int retval; | |
465 | ||
466 | retval = check_root_hub_suspended(dev); | |
467 | if (retval) | |
468 | return retval; | |
a15d95a0 | 469 | |
abb30641 | 470 | pci_save_state(pci_dev); |
a15d95a0 | 471 | |
abb30641 AS |
472 | /* If the root hub is HALTed rather than SUSPENDed, |
473 | * disallow remote wakeup. | |
1da177e4 | 474 | */ |
abb30641 AS |
475 | if (hcd->state == HC_STATE_HALT) |
476 | device_set_wakeup_enable(dev, 0); | |
477 | dev_dbg(dev, "wakeup: %d\n", device_may_wakeup(dev)); | |
a0d4922d | 478 | |
abb30641 AS |
479 | /* Possibly enable remote wakeup, |
480 | * choose the appropriate low-power state, and go to that state. | |
481 | */ | |
482 | retval = pci_prepare_to_sleep(pci_dev); | |
483 | if (retval == -EIO) { /* Low-power not supported */ | |
484 | dev_dbg(dev, "--> PCI D0 legacy\n"); | |
485 | retval = 0; | |
486 | } else if (retval == 0) { | |
487 | dev_dbg(dev, "--> PCI %s\n", | |
488 | pci_power_name(pci_dev->current_state)); | |
a0d4922d | 489 | } else { |
abb30641 AS |
490 | suspend_report_result(pci_prepare_to_sleep, retval); |
491 | return retval; | |
1da177e4 LT |
492 | } |
493 | ||
2138a1f1 | 494 | powermac_set_asic(pci_dev, 0); |
1da177e4 LT |
495 | return retval; |
496 | } | |
1da177e4 | 497 | |
abb30641 | 498 | static int hcd_pci_resume_noirq(struct device *dev) |
a0d4922d | 499 | { |
abb30641 | 500 | struct pci_dev *pci_dev = to_pci_dev(dev); |
a0d4922d | 501 | |
2138a1f1 | 502 | powermac_set_asic(pci_dev, 1); |
a15d95a0 | 503 | |
abb30641 AS |
504 | /* Go back to D0 and disable remote wakeup */ |
505 | pci_back_from_sleep(pci_dev); | |
506 | return 0; | |
507 | } | |
508 | ||
abb30641 | 509 | static int hcd_pci_resume(struct device *dev) |
64a21d02 | 510 | { |
057c58bf | 511 | return resume_common(dev, PM_EVENT_RESUME); |
abb30641 | 512 | } |
64a21d02 | 513 | |
abb30641 AS |
514 | static int hcd_pci_restore(struct device *dev) |
515 | { | |
057c58bf | 516 | return resume_common(dev, PM_EVENT_RESTORE); |
64a21d02 | 517 | } |
1da177e4 | 518 | |
3da7cff4 AS |
519 | #else |
520 | ||
521 | #define hcd_pci_suspend NULL | |
522 | #define hcd_pci_suspend_noirq NULL | |
523 | #define hcd_pci_resume_noirq NULL | |
524 | #define hcd_pci_resume NULL | |
525 | #define hcd_pci_restore NULL | |
526 | ||
527 | #endif /* CONFIG_PM_SLEEP */ | |
528 | ||
529 | #ifdef CONFIG_PM_RUNTIME | |
530 | ||
531 | static int hcd_pci_runtime_suspend(struct device *dev) | |
532 | { | |
533 | int retval; | |
534 | ||
535 | retval = suspend_common(dev, true); | |
536 | if (retval == 0) | |
537 | powermac_set_asic(to_pci_dev(dev), 0); | |
538 | dev_dbg(dev, "hcd_pci_runtime_suspend: %d\n", retval); | |
539 | return retval; | |
540 | } | |
541 | ||
542 | static int hcd_pci_runtime_resume(struct device *dev) | |
543 | { | |
544 | int retval; | |
545 | ||
546 | powermac_set_asic(to_pci_dev(dev), 1); | |
547 | retval = resume_common(dev, PM_EVENT_AUTO_RESUME); | |
548 | dev_dbg(dev, "hcd_pci_runtime_resume: %d\n", retval); | |
549 | return retval; | |
550 | } | |
551 | ||
552 | #else | |
553 | ||
554 | #define hcd_pci_runtime_suspend NULL | |
555 | #define hcd_pci_runtime_resume NULL | |
556 | ||
557 | #endif /* CONFIG_PM_RUNTIME */ | |
558 | ||
47145210 | 559 | const struct dev_pm_ops usb_hcd_pci_pm_ops = { |
abb30641 AS |
560 | .suspend = hcd_pci_suspend, |
561 | .suspend_noirq = hcd_pci_suspend_noirq, | |
562 | .resume_noirq = hcd_pci_resume_noirq, | |
563 | .resume = hcd_pci_resume, | |
564 | .freeze = check_root_hub_suspended, | |
565 | .freeze_noirq = check_root_hub_suspended, | |
566 | .thaw_noirq = NULL, | |
567 | .thaw = NULL, | |
568 | .poweroff = hcd_pci_suspend, | |
569 | .poweroff_noirq = hcd_pci_suspend_noirq, | |
570 | .restore_noirq = hcd_pci_resume_noirq, | |
571 | .restore = hcd_pci_restore, | |
3da7cff4 AS |
572 | .runtime_suspend = hcd_pci_runtime_suspend, |
573 | .runtime_resume = hcd_pci_runtime_resume, | |
abb30641 AS |
574 | }; |
575 | EXPORT_SYMBOL_GPL(usb_hcd_pci_pm_ops); | |
576 | ||
3da7cff4 | 577 | #endif /* CONFIG_PM_OPS */ |