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26#include <linux/kernel.h>
27#include <linux/types.h>
28#include <linux/delay.h>
29#include <linux/pm.h>
30#include <linux/err.h>
31#include <linux/platform_device.h>
32#include <linux/fsl_devices.h>
33
34#include "ehci-fsl.h"
35
36
37
38
39
40
41
42
43
44
45
46
47
48static int usb_hcd_fsl_probe(const struct hc_driver *driver,
49 struct platform_device *pdev)
50{
51 struct fsl_usb2_platform_data *pdata;
52 struct usb_hcd *hcd;
53 struct resource *res;
54 int irq;
55 int retval;
56
57 pr_debug("initializing FSL-SOC USB Controller\n");
58
59
60 pdata = dev_get_platdata(&pdev->dev);
61 if (!pdata) {
62 dev_err(&pdev->dev,
63 "No platform data for %s.\n", dev_name(&pdev->dev));
64 return -ENODEV;
65 }
66
67
68
69
70
71 if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
72 (pdata->operating_mode == FSL_USB2_MPH_HOST) ||
73 (pdata->operating_mode == FSL_USB2_DR_OTG))) {
74 dev_err(&pdev->dev,
75 "Non Host Mode configured for %s. Wrong driver linked.\n",
76 dev_name(&pdev->dev));
77 return -ENODEV;
78 }
79
80 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
81 if (!res) {
82 dev_err(&pdev->dev,
83 "Found HC with no IRQ. Check %s setup!\n",
84 dev_name(&pdev->dev));
85 return -ENODEV;
86 }
87 irq = res->start;
88
89 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
90 if (!hcd) {
91 retval = -ENOMEM;
92 goto err1;
93 }
94
95 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
96 hcd->regs = devm_ioremap_resource(&pdev->dev, res);
97 if (IS_ERR(hcd->regs)) {
98 retval = PTR_ERR(hcd->regs);
99 goto err2;
100 }
101
102 hcd->rsrc_start = res->start;
103 hcd->rsrc_len = resource_size(res);
104
105 pdata->regs = hcd->regs;
106
107 if (pdata->power_budget)
108 hcd->power_budget = pdata->power_budget;
109
110
111
112
113 if (pdata->init && pdata->init(pdev)) {
114 retval = -ENODEV;
115 goto err2;
116 }
117
118
119 if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6)
120 setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4);
121
122
123
124 retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
125 if (retval != 0)
126 goto err2;
127 device_wakeup_enable(hcd->self.controller);
128
129#ifdef CONFIG_USB_OTG
130 if (pdata->operating_mode == FSL_USB2_DR_OTG) {
131 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
132
133 hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
134 dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n",
135 hcd, ehci, hcd->usb_phy);
136
137 if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
138 retval = otg_set_host(hcd->usb_phy->otg,
139 &ehci_to_hcd(ehci)->self);
140 if (retval) {
141 usb_put_phy(hcd->usb_phy);
142 goto err2;
143 }
144 } else {
145 dev_err(&pdev->dev, "can't find phy\n");
146 retval = -ENODEV;
147 goto err2;
148 }
149 }
150#endif
151 return retval;
152
153 err2:
154 usb_put_hcd(hcd);
155 err1:
156 dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
157 if (pdata->exit)
158 pdata->exit(pdev);
159 return retval;
160}
161
162
163
164
165
166
167
168
169
170
171
172
173static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
174 struct platform_device *pdev)
175{
176 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
177
178 if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
179 otg_set_host(hcd->usb_phy->otg, NULL);
180 usb_put_phy(hcd->usb_phy);
181 }
182
183 usb_remove_hcd(hcd);
184
185
186
187
188
189 if (pdata->exit)
190 pdata->exit(pdev);
191 usb_put_hcd(hcd);
192}
193
194static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
195 enum fsl_usb2_phy_modes phy_mode,
196 unsigned int port_offset)
197{
198 u32 portsc;
199 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
200 void __iomem *non_ehci = hcd->regs;
201 struct device *dev = hcd->self.controller;
202 struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
203
204 if (pdata->controller_ver < 0) {
205 dev_warn(hcd->self.controller, "Could not get controller version\n");
206 return -ENODEV;
207 }
208
209 portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);
210 portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
211
212 switch (phy_mode) {
213 case FSL_USB2_PHY_ULPI:
214 if (pdata->have_sysif_regs && pdata->controller_ver) {
215
216 clrbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
217 setbits32(non_ehci + FSL_SOC_USB_CTRL,
218 ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
219 }
220 portsc |= PORT_PTS_ULPI;
221 break;
222 case FSL_USB2_PHY_SERIAL:
223 portsc |= PORT_PTS_SERIAL;
224 break;
225 case FSL_USB2_PHY_UTMI_WIDE:
226 portsc |= PORT_PTS_PTW;
227
228 case FSL_USB2_PHY_UTMI:
229 if (pdata->have_sysif_regs && pdata->controller_ver) {
230
231 setbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
232 mdelay(FSL_UTMI_PHY_DLY);
233
234 }
235
236 if (pdata->have_sysif_regs)
237 setbits32(non_ehci + FSL_SOC_USB_CTRL,
238 CTRL_UTMI_PHY_EN);
239 portsc |= PORT_PTS_UTMI;
240 break;
241 case FSL_USB2_PHY_NONE:
242 break;
243 }
244
245 if (pdata->have_sysif_regs &&
246 pdata->controller_ver > FSL_USB_VER_1_6 &&
247 (phy_mode == FSL_USB2_PHY_ULPI)) {
248
249 if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) &
250 PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) ||
251 in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) {
252 dev_warn(hcd->self.controller, "USB PHY clock invalid\n");
253 return -EINVAL;
254 }
255 }
256
257 ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
258
259 if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs)
260 setbits32(non_ehci + FSL_SOC_USB_CTRL, USB_CTRL_USB_EN);
261
262 return 0;
263}
264
265static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
266{
267 struct usb_hcd *hcd = ehci_to_hcd(ehci);
268 struct fsl_usb2_platform_data *pdata;
269 void __iomem *non_ehci = hcd->regs;
270
271 pdata = dev_get_platdata(hcd->self.controller);
272
273 if (pdata->have_sysif_regs) {
274
275
276
277
278
279
280
281 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
282
283 out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
284 }
285
286 if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
287 (pdata->operating_mode == FSL_USB2_DR_OTG))
288 if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
289 return -EINVAL;
290
291 if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
292 unsigned int chip, rev, svr;
293
294 svr = mfspr(SPRN_SVR);
295 chip = svr >> 16;
296 rev = (svr >> 4) & 0xf;
297
298
299 if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
300 ehci->has_fsl_port_bug = 1;
301
302 if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
303 if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
304 return -EINVAL;
305
306 if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
307 if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1))
308 return -EINVAL;
309 }
310
311 if (pdata->have_sysif_regs) {
312#ifdef CONFIG_FSL_SOC_BOOKE
313 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
314 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
315#else
316 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
317 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
318#endif
319 out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
320 }
321
322 return 0;
323}
324
325
326static int ehci_fsl_reinit(struct ehci_hcd *ehci)
327{
328 if (ehci_fsl_usb_setup(ehci))
329 return -EINVAL;
330
331 return 0;
332}
333
334
335static int ehci_fsl_setup(struct usb_hcd *hcd)
336{
337 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
338 int retval;
339 struct fsl_usb2_platform_data *pdata;
340 struct device *dev;
341
342 dev = hcd->self.controller;
343 pdata = dev_get_platdata(hcd->self.controller);
344 ehci->big_endian_desc = pdata->big_endian_desc;
345 ehci->big_endian_mmio = pdata->big_endian_mmio;
346
347
348 ehci->caps = hcd->regs + 0x100;
349
350#ifdef CONFIG_PPC_83xx
351
352
353
354
355
356 ehci->need_oc_pp_cycle = 1;
357#endif
358
359 hcd->has_tt = 1;
360
361 retval = ehci_setup(hcd);
362 if (retval)
363 return retval;
364
365 if (of_device_is_compatible(dev->parent->of_node,
366 "fsl,mpc5121-usb2-dr")) {
367
368
369
370
371 ehci_writel(ehci, SBUSCFG_INCR8,
372 hcd->regs + FSL_SOC_USB_SBUSCFG);
373 }
374
375 retval = ehci_fsl_reinit(ehci);
376 return retval;
377}
378
379struct ehci_fsl {
380 struct ehci_hcd ehci;
381
382#ifdef CONFIG_PM
383
384 u32 usb_ctrl;
385#endif
386};
387
388#ifdef CONFIG_PM
389
390#ifdef CONFIG_PPC_MPC512x
391static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
392{
393 struct usb_hcd *hcd = dev_get_drvdata(dev);
394 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
395 struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
396 u32 tmp;
397
398#ifdef CONFIG_DYNAMIC_DEBUG
399 u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);
400 mode &= USBMODE_CM_MASK;
401 tmp = ehci_readl(ehci, hcd->regs + 0x140);
402
403 dev_dbg(dev, "suspend=%d already_suspended=%d "
404 "mode=%d usbcmd %08x\n", pdata->suspended,
405 pdata->already_suspended, mode, tmp);
406#endif
407
408
409
410
411
412
413 if (pdata->suspended) {
414 dev_dbg(dev, "already suspended, leaving early\n");
415 pdata->already_suspended = 1;
416 return 0;
417 }
418
419 dev_dbg(dev, "suspending...\n");
420
421 ehci->rh_state = EHCI_RH_SUSPENDED;
422 dev->power.power_state = PMSG_SUSPEND;
423
424
425 clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
426
427
428 tmp = ehci_readl(ehci, &ehci->regs->command);
429 tmp &= ~CMD_RUN;
430 ehci_writel(ehci, tmp, &ehci->regs->command);
431
432
433 pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);
434 pdata->pm_command &= ~CMD_RUN;
435 pdata->pm_status = ehci_readl(ehci, &ehci->regs->status);
436 pdata->pm_intr_enable = ehci_readl(ehci, &ehci->regs->intr_enable);
437 pdata->pm_frame_index = ehci_readl(ehci, &ehci->regs->frame_index);
438 pdata->pm_segment = ehci_readl(ehci, &ehci->regs->segment);
439 pdata->pm_frame_list = ehci_readl(ehci, &ehci->regs->frame_list);
440 pdata->pm_async_next = ehci_readl(ehci, &ehci->regs->async_next);
441 pdata->pm_configured_flag =
442 ehci_readl(ehci, &ehci->regs->configured_flag);
443 pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);
444 pdata->pm_usbgenctrl = ehci_readl(ehci,
445 hcd->regs + FSL_SOC_USB_USBGENCTRL);
446
447
448 pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);
449
450 pdata->suspended = 1;
451
452
453 tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);
454 tmp &= ~PORT_POWER;
455 ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);
456
457 return 0;
458}
459
460static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
461{
462 struct usb_hcd *hcd = dev_get_drvdata(dev);
463 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
464 struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
465 u32 tmp;
466
467 dev_dbg(dev, "suspend=%d already_suspended=%d\n",
468 pdata->suspended, pdata->already_suspended);
469
470
471
472
473
474 if (pdata->already_suspended) {
475 dev_dbg(dev, "already suspended, leaving early\n");
476 pdata->already_suspended = 0;
477 return 0;
478 }
479
480 if (!pdata->suspended) {
481 dev_dbg(dev, "not suspended, leaving early\n");
482 return 0;
483 }
484
485 pdata->suspended = 0;
486
487 dev_dbg(dev, "resuming...\n");
488
489
490 tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);
491 ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);
492
493 ehci_writel(ehci, pdata->pm_usbgenctrl,
494 hcd->regs + FSL_SOC_USB_USBGENCTRL);
495 ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
496 hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
497
498 ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
499
500
501 ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
502 ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);
503 ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);
504 ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);
505 ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);
506 ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);
507 ehci_writel(ehci, pdata->pm_configured_flag,
508 &ehci->regs->configured_flag);
509 ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
510
511 set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
512 ehci->rh_state = EHCI_RH_RUNNING;
513 dev->power.power_state = PMSG_ON;
514
515 tmp = ehci_readl(ehci, &ehci->regs->command);
516 tmp |= CMD_RUN;
517 ehci_writel(ehci, tmp, &ehci->regs->command);
518
519 usb_hcd_resume_root_hub(hcd);
520
521 return 0;
522}
523#else
524static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
525{
526 return 0;
527}
528
529static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
530{
531 return 0;
532}
533#endif
534
535static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
536{
537 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
538
539 return container_of(ehci, struct ehci_fsl, ehci);
540}
541
542static int ehci_fsl_drv_suspend(struct device *dev)
543{
544 struct usb_hcd *hcd = dev_get_drvdata(dev);
545 struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
546 void __iomem *non_ehci = hcd->regs;
547
548 if (of_device_is_compatible(dev->parent->of_node,
549 "fsl,mpc5121-usb2-dr")) {
550 return ehci_fsl_mpc512x_drv_suspend(dev);
551 }
552
553 ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
554 device_may_wakeup(dev));
555 if (!fsl_deep_sleep())
556 return 0;
557
558 ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
559 return 0;
560}
561
562static int ehci_fsl_drv_resume(struct device *dev)
563{
564 struct usb_hcd *hcd = dev_get_drvdata(dev);
565 struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
566 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
567 void __iomem *non_ehci = hcd->regs;
568
569 if (of_device_is_compatible(dev->parent->of_node,
570 "fsl,mpc5121-usb2-dr")) {
571 return ehci_fsl_mpc512x_drv_resume(dev);
572 }
573
574 ehci_prepare_ports_for_controller_resume(ehci);
575 if (!fsl_deep_sleep())
576 return 0;
577
578 usb_root_hub_lost_power(hcd->self.root_hub);
579
580
581 out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
582
583 ehci_reset(ehci);
584 ehci_fsl_reinit(ehci);
585
586 return 0;
587}
588
589static int ehci_fsl_drv_restore(struct device *dev)
590{
591 struct usb_hcd *hcd = dev_get_drvdata(dev);
592
593 usb_root_hub_lost_power(hcd->self.root_hub);
594 return 0;
595}
596
597static struct dev_pm_ops ehci_fsl_pm_ops = {
598 .suspend = ehci_fsl_drv_suspend,
599 .resume = ehci_fsl_drv_resume,
600 .restore = ehci_fsl_drv_restore,
601};
602
603#define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops)
604#else
605#define EHCI_FSL_PM_OPS NULL
606#endif
607
608#ifdef CONFIG_USB_OTG
609static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
610{
611 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
612 u32 status;
613
614 if (!port)
615 return -EINVAL;
616
617 port--;
618
619
620 status = readl(&ehci->regs->port_status[port]);
621 if (!(status & PORT_CONNECT))
622 return -ENODEV;
623
624
625 if (ehci_is_TDI(ehci)) {
626 writel(PORT_RESET |
627 (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)),
628 &ehci->regs->port_status[port]);
629 } else {
630 writel(PORT_RESET, &ehci->regs->port_status[port]);
631 }
632
633 return 0;
634}
635#else
636#define ehci_start_port_reset NULL
637#endif
638
639
640static const struct hc_driver ehci_fsl_hc_driver = {
641 .description = hcd_name,
642 .product_desc = "Freescale On-Chip EHCI Host Controller",
643 .hcd_priv_size = sizeof(struct ehci_fsl),
644
645
646
647
648 .irq = ehci_irq,
649 .flags = HCD_USB2 | HCD_MEMORY | HCD_BH,
650
651
652
653
654 .reset = ehci_fsl_setup,
655 .start = ehci_run,
656 .stop = ehci_stop,
657 .shutdown = ehci_shutdown,
658
659
660
661
662 .urb_enqueue = ehci_urb_enqueue,
663 .urb_dequeue = ehci_urb_dequeue,
664 .endpoint_disable = ehci_endpoint_disable,
665 .endpoint_reset = ehci_endpoint_reset,
666
667
668
669
670 .get_frame_number = ehci_get_frame,
671
672
673
674
675 .hub_status_data = ehci_hub_status_data,
676 .hub_control = ehci_hub_control,
677 .bus_suspend = ehci_bus_suspend,
678 .bus_resume = ehci_bus_resume,
679 .start_port_reset = ehci_start_port_reset,
680 .relinquish_port = ehci_relinquish_port,
681 .port_handed_over = ehci_port_handed_over,
682
683 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
684};
685
686static int ehci_fsl_drv_probe(struct platform_device *pdev)
687{
688 if (usb_disabled())
689 return -ENODEV;
690
691
692 return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
693}
694
695static int ehci_fsl_drv_remove(struct platform_device *pdev)
696{
697 struct usb_hcd *hcd = platform_get_drvdata(pdev);
698
699
700 usb_hcd_fsl_remove(hcd, pdev);
701 return 0;
702}
703
704MODULE_ALIAS("platform:fsl-ehci");
705
706static struct platform_driver ehci_fsl_driver = {
707 .probe = ehci_fsl_drv_probe,
708 .remove = ehci_fsl_drv_remove,
709 .shutdown = usb_hcd_platform_shutdown,
710 .driver = {
711 .name = "fsl-ehci",
712 .owner = THIS_MODULE,
713 .pm = EHCI_FSL_PM_OPS,
714 },
715};
716