1
2
3
4
5
6
7
8
9
10
11#include <linux/clk.h>
12#include <linux/dma-mapping.h>
13#include <linux/module.h>
14#include <linux/pci.h>
15#include <linux/of.h>
16#include <linux/of_device.h>
17#include <linux/platform_device.h>
18#include <linux/usb/phy.h>
19#include <linux/slab.h>
20#include <linux/acpi.h>
21#include <linux/usb/of.h>
22#include <linux/usb/otg.h>
23
24#include "xhci.h"
25#include "xhci-plat.h"
26#include "xhci-mvebu.h"
27#include "xhci-rcar.h"
28
29static struct hc_driver __read_mostly xhci_plat_hc_driver;
30
31static int xhci_plat_setup(struct usb_hcd *hcd);
32static int xhci_plat_start(struct usb_hcd *hcd);
33
34static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
35 .extra_priv_size = sizeof(struct xhci_plat_priv),
36 .reset = xhci_plat_setup,
37 .start = xhci_plat_start,
38};
39
40static void xhci_priv_plat_start(struct usb_hcd *hcd)
41{
42 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
43
44 if (priv->plat_start)
45 priv->plat_start(hcd);
46}
47
48static int xhci_priv_init_quirk(struct usb_hcd *hcd)
49{
50 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
51
52 if (!priv->init_quirk)
53 return 0;
54
55 return priv->init_quirk(hcd);
56}
57
58static int xhci_priv_suspend_quirk(struct usb_hcd *hcd)
59{
60 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
61
62 if (!priv->suspend_quirk)
63 return 0;
64
65 return priv->suspend_quirk(hcd);
66}
67
68static int xhci_priv_resume_quirk(struct usb_hcd *hcd)
69{
70 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
71
72 if (!priv->resume_quirk)
73 return 0;
74
75 return priv->resume_quirk(hcd);
76}
77
78static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
79{
80 struct xhci_plat_priv *priv = xhci_to_priv(xhci);
81
82
83
84
85
86
87 xhci->quirks |= XHCI_PLAT | priv->quirks;
88}
89
90
91static int xhci_plat_setup(struct usb_hcd *hcd)
92{
93 int ret;
94
95
96 ret = xhci_priv_init_quirk(hcd);
97 if (ret)
98 return ret;
99
100 return xhci_gen_setup(hcd, xhci_plat_quirks);
101}
102
103static int xhci_plat_start(struct usb_hcd *hcd)
104{
105 xhci_priv_plat_start(hcd);
106 return xhci_run(hcd);
107}
108
109#ifdef CONFIG_OF
110static const struct xhci_plat_priv xhci_plat_marvell_armada = {
111 .init_quirk = xhci_mvebu_mbus_init_quirk,
112};
113
114static const struct xhci_plat_priv xhci_plat_marvell_armada3700 = {
115 .init_quirk = xhci_mvebu_a3700_init_quirk,
116};
117
118static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
119 SET_XHCI_PLAT_PRIV_FOR_RCAR(XHCI_RCAR_FIRMWARE_NAME_V1)
120};
121
122static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
123 SET_XHCI_PLAT_PRIV_FOR_RCAR(XHCI_RCAR_FIRMWARE_NAME_V3)
124};
125
126static const struct xhci_plat_priv xhci_plat_brcm = {
127 .quirks = XHCI_RESET_ON_RESUME,
128};
129
130static const struct of_device_id usb_xhci_of_match[] = {
131 {
132 .compatible = "generic-xhci",
133 }, {
134 .compatible = "xhci-platform",
135 }, {
136 .compatible = "marvell,armada-375-xhci",
137 .data = &xhci_plat_marvell_armada,
138 }, {
139 .compatible = "marvell,armada-380-xhci",
140 .data = &xhci_plat_marvell_armada,
141 }, {
142 .compatible = "marvell,armada3700-xhci",
143 .data = &xhci_plat_marvell_armada3700,
144 }, {
145 .compatible = "renesas,xhci-r8a7790",
146 .data = &xhci_plat_renesas_rcar_gen2,
147 }, {
148 .compatible = "renesas,xhci-r8a7791",
149 .data = &xhci_plat_renesas_rcar_gen2,
150 }, {
151 .compatible = "renesas,xhci-r8a7793",
152 .data = &xhci_plat_renesas_rcar_gen2,
153 }, {
154 .compatible = "renesas,xhci-r8a7795",
155 .data = &xhci_plat_renesas_rcar_gen3,
156 }, {
157 .compatible = "renesas,xhci-r8a7796",
158 .data = &xhci_plat_renesas_rcar_gen3,
159 }, {
160 .compatible = "renesas,rcar-gen2-xhci",
161 .data = &xhci_plat_renesas_rcar_gen2,
162 }, {
163 .compatible = "renesas,rcar-gen3-xhci",
164 .data = &xhci_plat_renesas_rcar_gen3,
165 }, {
166 .compatible = "brcm,xhci-brcm-v2",
167 .data = &xhci_plat_brcm,
168 }, {
169 .compatible = "brcm,bcm7445-xhci",
170 .data = &xhci_plat_brcm,
171 },
172 {},
173};
174MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
175#endif
176
177static int usb_otg_set_host(struct device *dev, struct usb_hcd *hcd, bool yes)
178{
179 int ret = 0;
180
181 hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB3);
182 if (!IS_ERR_OR_NULL(hcd->usb_phy) && hcd->usb_phy->otg) {
183 if (yes) {
184 if (otg_set_host(hcd->usb_phy->otg, &hcd->self)) {
185 usb_put_phy(hcd->usb_phy);
186 goto disable_phy;
187 }
188 } else {
189 ret = otg_set_host(hcd->usb_phy->otg, NULL);
190 usb_put_phy(hcd->usb_phy);
191 goto disable_phy;
192 }
193
194 } else {
195 goto disable_phy;
196 }
197
198 return 0;
199
200disable_phy:
201 hcd->usb_phy = NULL;
202
203 return ret;
204}
205
206static int xhci_plat_probe(struct platform_device *pdev)
207{
208 const struct xhci_plat_priv *priv_match;
209 const struct hc_driver *driver;
210 struct device *sysdev, *tmpdev;
211 struct xhci_hcd *xhci;
212 struct resource *res;
213 struct usb_hcd *hcd;
214 int ret;
215 int irq;
216 struct xhci_plat_priv *priv = NULL;
217
218
219 if (usb_disabled())
220 return -ENODEV;
221
222 driver = &xhci_plat_hc_driver;
223
224 irq = platform_get_irq(pdev, 0);
225 if (irq < 0)
226 return irq;
227
228
229
230
231
232
233
234
235 for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {
236 if (is_of_node(sysdev->fwnode) ||
237 is_acpi_device_node(sysdev->fwnode))
238 break;
239#ifdef CONFIG_PCI
240 else if (sysdev->bus == &pci_bus_type)
241 break;
242#endif
243 }
244
245 if (!sysdev)
246 sysdev = &pdev->dev;
247
248
249 if (WARN_ON(!sysdev->dma_mask))
250
251 ret = dma_coerce_mask_and_coherent(sysdev,
252 DMA_BIT_MASK(64));
253 else
254 ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64));
255
256
257 if (ret) {
258 ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(32));
259 if (ret)
260 return ret;
261 }
262
263
264 device_set_wakeup_capable(&pdev->dev, true);
265
266 pm_runtime_set_active(&pdev->dev);
267 pm_runtime_enable(&pdev->dev);
268 pm_runtime_get_noresume(&pdev->dev);
269
270 hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
271 dev_name(&pdev->dev), NULL);
272 if (!hcd) {
273 ret = -ENOMEM;
274 goto disable_runtime;
275 }
276
277 hcd->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
278 if (IS_ERR(hcd->regs)) {
279 ret = PTR_ERR(hcd->regs);
280 goto put_hcd;
281 }
282
283 hcd->rsrc_start = res->start;
284 hcd->rsrc_len = resource_size(res);
285
286 xhci = hcd_to_xhci(hcd);
287
288
289
290
291
292 xhci->reg_clk = devm_clk_get_optional(&pdev->dev, "reg");
293 if (IS_ERR(xhci->reg_clk)) {
294 ret = PTR_ERR(xhci->reg_clk);
295 goto put_hcd;
296 }
297
298 ret = clk_prepare_enable(xhci->reg_clk);
299 if (ret)
300 goto put_hcd;
301
302 xhci->clk = devm_clk_get_optional(&pdev->dev, NULL);
303 if (IS_ERR(xhci->clk)) {
304 ret = PTR_ERR(xhci->clk);
305 goto disable_reg_clk;
306 }
307
308 ret = clk_prepare_enable(xhci->clk);
309 if (ret)
310 goto disable_reg_clk;
311
312 if (pdev->dev.of_node)
313 priv_match = of_device_get_match_data(&pdev->dev);
314 else
315 priv_match = dev_get_platdata(&pdev->dev);
316
317 if (priv_match) {
318 priv = hcd_to_xhci_priv(hcd);
319
320 *priv = *priv_match;
321 }
322
323 device_set_wakeup_capable(&pdev->dev, true);
324
325 xhci->main_hcd = hcd;
326 xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
327 dev_name(&pdev->dev), hcd);
328 if (!xhci->shared_hcd) {
329 ret = -ENOMEM;
330 goto disable_clk;
331 }
332
333
334 xhci->imod_interval = 40000;
335
336
337 for (tmpdev = &pdev->dev; tmpdev; tmpdev = tmpdev->parent) {
338
339 if (device_property_read_bool(tmpdev, "usb2-lpm-disable"))
340 xhci->quirks |= XHCI_HW_LPM_DISABLE;
341
342 if (device_property_read_bool(tmpdev, "usb3-lpm-capable"))
343 xhci->quirks |= XHCI_LPM_SUPPORT;
344
345 if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
346 xhci->quirks |= XHCI_BROKEN_PORT_PED;
347
348 device_property_read_u32(tmpdev, "imod-interval-ns",
349 &xhci->imod_interval);
350 }
351
352 hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
353 if (IS_ERR(hcd->usb_phy)) {
354 ret = PTR_ERR(hcd->usb_phy);
355 if (ret == -EPROBE_DEFER)
356 goto put_usb3_hcd;
357 hcd->usb_phy = NULL;
358 } else {
359 ret = usb_phy_init(hcd->usb_phy);
360 if (ret)
361 goto put_usb3_hcd;
362 }
363
364 hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
365 xhci->shared_hcd->tpl_support = hcd->tpl_support;
366 if (priv && (priv->quirks & XHCI_SKIP_PHY_INIT))
367 hcd->skip_phy_initialization = 1;
368
369 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
370 if (ret)
371 goto disable_usb_phy;
372
373 if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
374 xhci->shared_hcd->can_do_streams = 1;
375
376 ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
377 if (ret)
378 goto dealloc_usb2_hcd;
379
380 ret = usb_otg_set_host(&pdev->dev, hcd, true);
381 if (ret)
382 goto dealloc_usb2_hcd;
383
384 device_enable_async_suspend(&pdev->dev);
385 pm_runtime_put_noidle(&pdev->dev);
386
387
388
389
390
391 pm_runtime_forbid(&pdev->dev);
392
393 return 0;
394
395
396dealloc_usb2_hcd:
397 usb_remove_hcd(hcd);
398
399disable_usb_phy:
400 usb_phy_shutdown(hcd->usb_phy);
401
402put_usb3_hcd:
403 usb_put_hcd(xhci->shared_hcd);
404
405disable_clk:
406 clk_disable_unprepare(xhci->clk);
407
408disable_reg_clk:
409 clk_disable_unprepare(xhci->reg_clk);
410
411put_hcd:
412 usb_put_hcd(hcd);
413
414disable_runtime:
415 pm_runtime_put_noidle(&pdev->dev);
416 pm_runtime_disable(&pdev->dev);
417
418 return ret;
419}
420
421static int xhci_plat_remove(struct platform_device *dev)
422{
423 struct usb_hcd *hcd = platform_get_drvdata(dev);
424 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
425 struct clk *clk = xhci->clk;
426 struct clk *reg_clk = xhci->reg_clk;
427 struct usb_hcd *shared_hcd = xhci->shared_hcd;
428
429 pm_runtime_get_sync(&dev->dev);
430 xhci->xhc_state |= XHCI_STATE_REMOVING;
431
432 usb_remove_hcd(shared_hcd);
433 xhci->shared_hcd = NULL;
434 usb_phy_shutdown(hcd->usb_phy);
435
436 usb_otg_set_host(&dev->dev, hcd, false);
437
438 usb_remove_hcd(hcd);
439 usb_put_hcd(shared_hcd);
440
441 clk_disable_unprepare(clk);
442 clk_disable_unprepare(reg_clk);
443 usb_put_hcd(hcd);
444
445 pm_runtime_disable(&dev->dev);
446 pm_runtime_put_noidle(&dev->dev);
447 pm_runtime_set_suspended(&dev->dev);
448
449 return 0;
450}
451
452static int __maybe_unused xhci_plat_suspend(struct device *dev)
453{
454 struct usb_hcd *hcd = dev_get_drvdata(dev);
455 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
456 int ret;
457
458 ret = xhci_priv_suspend_quirk(hcd);
459 if (ret)
460 return ret;
461
462
463
464
465 return xhci_suspend(xhci, device_may_wakeup(dev));
466}
467
468static int __maybe_unused xhci_plat_resume(struct device *dev)
469{
470 struct usb_hcd *hcd = dev_get_drvdata(dev);
471 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
472 int ret;
473
474 ret = xhci_priv_resume_quirk(hcd);
475 if (ret)
476 return ret;
477
478 ret = xhci_resume(xhci, 0);
479 if (ret)
480 return ret;
481
482 pm_runtime_disable(dev);
483 pm_runtime_set_active(dev);
484 pm_runtime_enable(dev);
485
486 return 0;
487}
488
489static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
490{
491 struct usb_hcd *hcd = dev_get_drvdata(dev);
492 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
493 int ret;
494
495 ret = xhci_priv_suspend_quirk(hcd);
496 if (ret)
497 return ret;
498
499 return xhci_suspend(xhci, true);
500}
501
502static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
503{
504 struct usb_hcd *hcd = dev_get_drvdata(dev);
505 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
506
507 if (device_may_wakeup(&hcd->self.root_hub->dev))
508 disable_irq_wake(hcd->irq);
509
510 return xhci_resume(xhci, 0);
511}
512
513static const struct dev_pm_ops xhci_plat_pm_ops = {
514 SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
515
516 SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,
517 xhci_plat_runtime_resume,
518 NULL)
519};
520
521#ifdef CONFIG_ACPI
522static const struct acpi_device_id usb_xhci_acpi_match[] = {
523
524 { "PNP0D10", },
525 { }
526};
527MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
528#endif
529
530static struct platform_driver usb_xhci_driver = {
531 .probe = xhci_plat_probe,
532 .remove = xhci_plat_remove,
533 .shutdown = usb_hcd_platform_shutdown,
534 .driver = {
535 .name = "xhci-hcd",
536 .pm = &xhci_plat_pm_ops,
537 .of_match_table = of_match_ptr(usb_xhci_of_match),
538 .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
539 },
540};
541MODULE_ALIAS("platform:xhci-hcd");
542
543static int __init xhci_plat_init(void)
544{
545 xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
546 return platform_driver_register(&usb_xhci_driver);
547}
548module_init(xhci_plat_init);
549
550static void __exit xhci_plat_exit(void)
551{
552 platform_driver_unregister(&usb_xhci_driver);
553}
554module_exit(xhci_plat_exit);
555
556MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
557MODULE_LICENSE("GPL");
558
