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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2012 Freescale Semiconductor, Inc.
4 * Copyright (C) 2012 Marek Vasut <marex@denx.de>
5 * on behalf of DENX Software Engineering GmbH
6 */
7
8#include <linux/module.h>
9#include <linux/of_platform.h>
10#include <linux/platform_device.h>
11#include <linux/pm_runtime.h>
12#include <linux/usb/chipidea.h>
13#include <linux/usb/of.h>
14#include <linux/clk.h>
15#include <linux/pinctrl/consumer.h>
16#include <linux/pm_qos.h>
17
18#include "ci.h"
19#include "ci_hdrc_imx.h"
20
21struct ci_hdrc_imx_platform_flag {
22 unsigned int flags;
23};
24
25static const struct ci_hdrc_imx_platform_flag imx23_usb_data = {
26 .flags = CI_HDRC_TURN_VBUS_EARLY_ON |
27 CI_HDRC_DISABLE_STREAMING,
28};
29
30static const struct ci_hdrc_imx_platform_flag imx27_usb_data = {
31 .flags = CI_HDRC_DISABLE_STREAMING,
32};
33
34static const struct ci_hdrc_imx_platform_flag imx28_usb_data = {
35 .flags = CI_HDRC_IMX28_WRITE_FIX |
36 CI_HDRC_TURN_VBUS_EARLY_ON |
37 CI_HDRC_DISABLE_STREAMING,
38};
39
40static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = {
41 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
42 CI_HDRC_TURN_VBUS_EARLY_ON |
43 CI_HDRC_DISABLE_STREAMING,
44};
45
46static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = {
47 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
48 CI_HDRC_TURN_VBUS_EARLY_ON |
49 CI_HDRC_DISABLE_HOST_STREAMING,
50};
51
52static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = {
53 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
54 CI_HDRC_TURN_VBUS_EARLY_ON |
55 CI_HDRC_DISABLE_HOST_STREAMING,
56};
57
58static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = {
59 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
60 CI_HDRC_TURN_VBUS_EARLY_ON,
61};
62
63static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = {
64 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM,
65};
66
67static const struct ci_hdrc_imx_platform_flag imx7ulp_usb_data = {
68 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
69 CI_HDRC_PMQOS,
70};
71
72static const struct of_device_id ci_hdrc_imx_dt_ids[] = {
73 { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data},
74 { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data},
75 { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data},
76 { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data},
77 { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data},
78 { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data},
79 { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data},
80 { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data},
81 { .compatible = "fsl,imx7ulp-usb", .data = &imx7ulp_usb_data},
82 { /* sentinel */ }
83};
84MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids);
85
86struct ci_hdrc_imx_data {
87 struct usb_phy *phy;
88 struct platform_device *ci_pdev;
89 struct clk *clk;
90 struct imx_usbmisc_data *usbmisc_data;
91 bool supports_runtime_pm;
92 bool override_phy_control;
93 bool in_lpm;
94 struct pinctrl *pinctrl;
95 struct pinctrl_state *pinctrl_hsic_active;
96 struct regulator *hsic_pad_regulator;
97 /* SoC before i.mx6 (except imx23/imx28) needs three clks */
98 bool need_three_clks;
99 struct clk *clk_ipg;
100 struct clk *clk_ahb;
101 struct clk *clk_per;
102 /* --------------------------------- */
103 struct pm_qos_request pm_qos_req;
104 const struct ci_hdrc_imx_platform_flag *plat_data;
105};
106
107/* Common functions shared by usbmisc drivers */
108
109static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
110{
111 struct platform_device *misc_pdev;
112 struct device_node *np = dev->of_node;
113 struct of_phandle_args args;
114 struct imx_usbmisc_data *data;
115 int ret;
116
117 /*
118 * In case the fsl,usbmisc property is not present this device doesn't
119 * need usbmisc. Return NULL (which is no error here)
120 */
121 if (!of_get_property(np, "fsl,usbmisc", NULL))
122 return NULL;
123
124 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
125 if (!data)
126 return ERR_PTR(-ENOMEM);
127
128 ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells",
129 0, &args);
130 if (ret) {
131 dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n",
132 ret);
133 return ERR_PTR(ret);
134 }
135
136 data->index = args.args[0];
137
138 misc_pdev = of_find_device_by_node(args.np);
139 of_node_put(args.np);
140
141 if (!misc_pdev || !platform_get_drvdata(misc_pdev))
142 return ERR_PTR(-EPROBE_DEFER);
143
144 data->dev = &misc_pdev->dev;
145
146 /*
147 * Check the various over current related properties. If over current
148 * detection is disabled we're not interested in the polarity.
149 */
150 if (of_find_property(np, "disable-over-current", NULL)) {
151 data->disable_oc = 1;
152 } else if (of_find_property(np, "over-current-active-high", NULL)) {
153 data->oc_pol_active_low = 0;
154 data->oc_pol_configured = 1;
155 } else if (of_find_property(np, "over-current-active-low", NULL)) {
156 data->oc_pol_active_low = 1;
157 data->oc_pol_configured = 1;
158 } else {
159 dev_warn(dev, "No over current polarity defined\n");
160 }
161
162 data->pwr_pol = of_property_read_bool(np, "power-active-high");
163 data->evdo = of_property_read_bool(np, "external-vbus-divider");
164
165 if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI)
166 data->ulpi = 1;
167
168 return data;
169}
170
171/* End of common functions shared by usbmisc drivers*/
172static int imx_get_clks(struct device *dev)
173{
174 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
175 int ret = 0;
176
177 data->clk_ipg = devm_clk_get(dev, "ipg");
178 if (IS_ERR(data->clk_ipg)) {
179 /* If the platform only needs one clocks */
180 data->clk = devm_clk_get(dev, NULL);
181 if (IS_ERR(data->clk)) {
182 ret = PTR_ERR(data->clk);
183 dev_err(dev,
184 "Failed to get clks, err=%ld,%ld\n",
185 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg));
186 return ret;
187 }
188 return ret;
189 }
190
191 data->clk_ahb = devm_clk_get(dev, "ahb");
192 if (IS_ERR(data->clk_ahb)) {
193 ret = PTR_ERR(data->clk_ahb);
194 dev_err(dev,
195 "Failed to get ahb clock, err=%d\n", ret);
196 return ret;
197 }
198
199 data->clk_per = devm_clk_get(dev, "per");
200 if (IS_ERR(data->clk_per)) {
201 ret = PTR_ERR(data->clk_per);
202 dev_err(dev,
203 "Failed to get per clock, err=%d\n", ret);
204 return ret;
205 }
206
207 data->need_three_clks = true;
208 return ret;
209}
210
211static int imx_prepare_enable_clks(struct device *dev)
212{
213 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
214 int ret = 0;
215
216 if (data->need_three_clks) {
217 ret = clk_prepare_enable(data->clk_ipg);
218 if (ret) {
219 dev_err(dev,
220 "Failed to prepare/enable ipg clk, err=%d\n",
221 ret);
222 return ret;
223 }
224
225 ret = clk_prepare_enable(data->clk_ahb);
226 if (ret) {
227 dev_err(dev,
228 "Failed to prepare/enable ahb clk, err=%d\n",
229 ret);
230 clk_disable_unprepare(data->clk_ipg);
231 return ret;
232 }
233
234 ret = clk_prepare_enable(data->clk_per);
235 if (ret) {
236 dev_err(dev,
237 "Failed to prepare/enable per clk, err=%d\n",
238 ret);
239 clk_disable_unprepare(data->clk_ahb);
240 clk_disable_unprepare(data->clk_ipg);
241 return ret;
242 }
243 } else {
244 ret = clk_prepare_enable(data->clk);
245 if (ret) {
246 dev_err(dev,
247 "Failed to prepare/enable clk, err=%d\n",
248 ret);
249 return ret;
250 }
251 }
252
253 return ret;
254}
255
256static void imx_disable_unprepare_clks(struct device *dev)
257{
258 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
259
260 if (data->need_three_clks) {
261 clk_disable_unprepare(data->clk_per);
262 clk_disable_unprepare(data->clk_ahb);
263 clk_disable_unprepare(data->clk_ipg);
264 } else {
265 clk_disable_unprepare(data->clk);
266 }
267}
268
269static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event)
270{
271 struct device *dev = ci->dev->parent;
272 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
273 int ret = 0;
274 struct imx_usbmisc_data *mdata = data->usbmisc_data;
275
276 switch (event) {
277 case CI_HDRC_IMX_HSIC_ACTIVE_EVENT:
278 if (data->pinctrl) {
279 ret = pinctrl_select_state(data->pinctrl,
280 data->pinctrl_hsic_active);
281 if (ret)
282 dev_err(dev,
283 "hsic_active select failed, err=%d\n",
284 ret);
285 }
286 break;
287 case CI_HDRC_IMX_HSIC_SUSPEND_EVENT:
288 ret = imx_usbmisc_hsic_set_connect(mdata);
289 if (ret)
290 dev_err(dev,
291 "hsic_set_connect failed, err=%d\n", ret);
292 break;
293 case CI_HDRC_CONTROLLER_VBUS_EVENT:
294 if (ci->vbus_active)
295 ret = imx_usbmisc_charger_detection(mdata, true);
296 else
297 ret = imx_usbmisc_charger_detection(mdata, false);
298 if (ci->usb_phy)
299 schedule_work(&ci->usb_phy->chg_work);
300 break;
301 default:
302 break;
303 }
304
305 return ret;
306}
307
308static int ci_hdrc_imx_probe(struct platform_device *pdev)
309{
310 struct ci_hdrc_imx_data *data;
311 struct ci_hdrc_platform_data pdata = {
312 .name = dev_name(&pdev->dev),
313 .capoffset = DEF_CAPOFFSET,
314 .notify_event = ci_hdrc_imx_notify_event,
315 };
316 int ret;
317 const struct of_device_id *of_id;
318 const struct ci_hdrc_imx_platform_flag *imx_platform_flag;
319 struct device_node *np = pdev->dev.of_node;
320 struct device *dev = &pdev->dev;
321
322 of_id = of_match_device(ci_hdrc_imx_dt_ids, dev);
323 if (!of_id)
324 return -ENODEV;
325
326 imx_platform_flag = of_id->data;
327
328 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
329 if (!data)
330 return -ENOMEM;
331
332 data->plat_data = imx_platform_flag;
333 pdata.flags |= imx_platform_flag->flags;
334 platform_set_drvdata(pdev, data);
335 data->usbmisc_data = usbmisc_get_init_data(dev);
336 if (IS_ERR(data->usbmisc_data))
337 return PTR_ERR(data->usbmisc_data);
338
339 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC)
340 && data->usbmisc_data) {
341 pdata.flags |= CI_HDRC_IMX_IS_HSIC;
342 data->usbmisc_data->hsic = 1;
343 data->pinctrl = devm_pinctrl_get(dev);
344 if (PTR_ERR(data->pinctrl) == -ENODEV)
345 data->pinctrl = NULL;
346 else if (IS_ERR(data->pinctrl)) {
347 if (PTR_ERR(data->pinctrl) != -EPROBE_DEFER)
348 dev_err(dev, "pinctrl get failed, err=%ld\n",
349 PTR_ERR(data->pinctrl));
350 return PTR_ERR(data->pinctrl);
351 }
352
353 data->hsic_pad_regulator =
354 devm_regulator_get_optional(dev, "hsic");
355 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) {
356 /* no pad regualator is needed */
357 data->hsic_pad_regulator = NULL;
358 } else if (IS_ERR(data->hsic_pad_regulator)) {
359 if (PTR_ERR(data->hsic_pad_regulator) != -EPROBE_DEFER)
360 dev_err(dev,
361 "Get HSIC pad regulator error: %ld\n",
362 PTR_ERR(data->hsic_pad_regulator));
363 return PTR_ERR(data->hsic_pad_regulator);
364 }
365
366 if (data->hsic_pad_regulator) {
367 ret = regulator_enable(data->hsic_pad_regulator);
368 if (ret) {
369 dev_err(dev,
370 "Failed to enable HSIC pad regulator\n");
371 return ret;
372 }
373 }
374 }
375
376 /* HSIC pinctrl handling */
377 if (data->pinctrl) {
378 struct pinctrl_state *pinctrl_hsic_idle;
379
380 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle");
381 if (IS_ERR(pinctrl_hsic_idle)) {
382 dev_err(dev,
383 "pinctrl_hsic_idle lookup failed, err=%ld\n",
384 PTR_ERR(pinctrl_hsic_idle));
385 return PTR_ERR(pinctrl_hsic_idle);
386 }
387
388 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle);
389 if (ret) {
390 dev_err(dev, "hsic_idle select failed, err=%d\n", ret);
391 return ret;
392 }
393
394 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl,
395 "active");
396 if (IS_ERR(data->pinctrl_hsic_active)) {
397 dev_err(dev,
398 "pinctrl_hsic_active lookup failed, err=%ld\n",
399 PTR_ERR(data->pinctrl_hsic_active));
400 return PTR_ERR(data->pinctrl_hsic_active);
401 }
402 }
403
404 if (pdata.flags & CI_HDRC_PMQOS)
405 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
406
407 ret = imx_get_clks(dev);
408 if (ret)
409 goto disable_hsic_regulator;
410
411 ret = imx_prepare_enable_clks(dev);
412 if (ret)
413 goto disable_hsic_regulator;
414
415 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0);
416 if (IS_ERR(data->phy)) {
417 ret = PTR_ERR(data->phy);
418 /* Return -EINVAL if no usbphy is available */
419 if (ret == -ENODEV)
420 data->phy = NULL;
421 else
422 goto err_clk;
423 }
424
425 pdata.usb_phy = data->phy;
426 if (data->usbmisc_data)
427 data->usbmisc_data->usb_phy = data->phy;
428
429 if ((of_device_is_compatible(np, "fsl,imx53-usb") ||
430 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy &&
431 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) {
432 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL;
433 data->override_phy_control = true;
434 usb_phy_init(pdata.usb_phy);
435 }
436
437 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM)
438 data->supports_runtime_pm = true;
439
440 ret = imx_usbmisc_init(data->usbmisc_data);
441 if (ret) {
442 dev_err(dev, "usbmisc init failed, ret=%d\n", ret);
443 goto err_clk;
444 }
445
446 data->ci_pdev = ci_hdrc_add_device(dev,
447 pdev->resource, pdev->num_resources,
448 &pdata);
449 if (IS_ERR(data->ci_pdev)) {
450 ret = PTR_ERR(data->ci_pdev);
451 if (ret != -EPROBE_DEFER)
452 dev_err(dev, "ci_hdrc_add_device failed, err=%d\n",
453 ret);
454 goto err_clk;
455 }
456
457 if (data->usbmisc_data) {
458 if (!IS_ERR(pdata.id_extcon.edev) ||
459 of_property_read_bool(np, "usb-role-switch"))
460 data->usbmisc_data->ext_id = 1;
461
462 if (!IS_ERR(pdata.vbus_extcon.edev) ||
463 of_property_read_bool(np, "usb-role-switch"))
464 data->usbmisc_data->ext_vbus = 1;
465
466 /* usbmisc needs to know dr mode to choose wakeup setting */
467 data->usbmisc_data->available_role =
468 ci_hdrc_query_available_role(data->ci_pdev);
469 }
470
471 ret = imx_usbmisc_init_post(data->usbmisc_data);
472 if (ret) {
473 dev_err(dev, "usbmisc post failed, ret=%d\n", ret);
474 goto disable_device;
475 }
476
477 if (data->supports_runtime_pm) {
478 pm_runtime_set_active(dev);
479 pm_runtime_enable(dev);
480 }
481
482 device_set_wakeup_capable(dev, true);
483
484 return 0;
485
486disable_device:
487 ci_hdrc_remove_device(data->ci_pdev);
488err_clk:
489 imx_disable_unprepare_clks(dev);
490disable_hsic_regulator:
491 if (data->hsic_pad_regulator)
492 /* don't overwrite original ret (cf. EPROBE_DEFER) */
493 regulator_disable(data->hsic_pad_regulator);
494 if (pdata.flags & CI_HDRC_PMQOS)
495 cpu_latency_qos_remove_request(&data->pm_qos_req);
496 data->ci_pdev = NULL;
497 return ret;
498}
499
500static int ci_hdrc_imx_remove(struct platform_device *pdev)
501{
502 struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev);
503
504 if (data->supports_runtime_pm) {
505 pm_runtime_get_sync(&pdev->dev);
506 pm_runtime_disable(&pdev->dev);
507 pm_runtime_put_noidle(&pdev->dev);
508 }
509 if (data->ci_pdev)
510 ci_hdrc_remove_device(data->ci_pdev);
511 if (data->override_phy_control)
512 usb_phy_shutdown(data->phy);
513 if (data->ci_pdev) {
514 imx_disable_unprepare_clks(&pdev->dev);
515 if (data->plat_data->flags & CI_HDRC_PMQOS)
516 cpu_latency_qos_remove_request(&data->pm_qos_req);
517 if (data->hsic_pad_regulator)
518 regulator_disable(data->hsic_pad_regulator);
519 }
520
521 return 0;
522}
523
524static void ci_hdrc_imx_shutdown(struct platform_device *pdev)
525{
526 ci_hdrc_imx_remove(pdev);
527}
528
529static int __maybe_unused imx_controller_suspend(struct device *dev)
530{
531 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
532 int ret = 0;
533
534 dev_dbg(dev, "at %s\n", __func__);
535
536 ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, false);
537 if (ret) {
538 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret);
539 return ret;
540 }
541
542 imx_disable_unprepare_clks(dev);
543 if (data->plat_data->flags & CI_HDRC_PMQOS)
544 cpu_latency_qos_remove_request(&data->pm_qos_req);
545
546 data->in_lpm = true;
547
548 return 0;
549}
550
551static int __maybe_unused imx_controller_resume(struct device *dev)
552{
553 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
554 int ret = 0;
555
556 dev_dbg(dev, "at %s\n", __func__);
557
558 if (!data->in_lpm) {
559 WARN_ON(1);
560 return 0;
561 }
562
563 if (data->plat_data->flags & CI_HDRC_PMQOS)
564 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
565
566 ret = imx_prepare_enable_clks(dev);
567 if (ret)
568 return ret;
569
570 data->in_lpm = false;
571
572 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false);
573 if (ret) {
574 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret);
575 goto clk_disable;
576 }
577
578 ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, true);
579 if (ret) {
580 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret);
581 goto hsic_set_clk_fail;
582 }
583
584 return 0;
585
586hsic_set_clk_fail:
587 imx_usbmisc_set_wakeup(data->usbmisc_data, true);
588clk_disable:
589 imx_disable_unprepare_clks(dev);
590 return ret;
591}
592
593static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev)
594{
595 int ret;
596
597 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
598
599 if (data->in_lpm)
600 /* The core's suspend doesn't run */
601 return 0;
602
603 if (device_may_wakeup(dev)) {
604 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true);
605 if (ret) {
606 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n",
607 ret);
608 return ret;
609 }
610 }
611
612 return imx_controller_suspend(dev);
613}
614
615static int __maybe_unused ci_hdrc_imx_resume(struct device *dev)
616{
617 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
618 int ret;
619
620 ret = imx_controller_resume(dev);
621 if (!ret && data->supports_runtime_pm) {
622 pm_runtime_disable(dev);
623 pm_runtime_set_active(dev);
624 pm_runtime_enable(dev);
625 }
626
627 return ret;
628}
629
630static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev)
631{
632 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
633 int ret;
634
635 if (data->in_lpm) {
636 WARN_ON(1);
637 return 0;
638 }
639
640 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true);
641 if (ret) {
642 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret);
643 return ret;
644 }
645
646 return imx_controller_suspend(dev);
647}
648
649static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev)
650{
651 return imx_controller_resume(dev);
652}
653
654static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {
655 SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)
656 SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend,
657 ci_hdrc_imx_runtime_resume, NULL)
658};
659static struct platform_driver ci_hdrc_imx_driver = {
660 .probe = ci_hdrc_imx_probe,
661 .remove = ci_hdrc_imx_remove,
662 .shutdown = ci_hdrc_imx_shutdown,
663 .driver = {
664 .name = "imx_usb",
665 .of_match_table = ci_hdrc_imx_dt_ids,
666 .pm = &ci_hdrc_imx_pm_ops,
667 },
668};
669
670module_platform_driver(ci_hdrc_imx_driver);
671
672MODULE_ALIAS("platform:imx-usb");
673MODULE_LICENSE("GPL");
674MODULE_DESCRIPTION("CI HDRC i.MX USB binding");
675MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
676MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2012 Freescale Semiconductor, Inc.
4 * Copyright (C) 2012 Marek Vasut <marex@denx.de>
5 * on behalf of DENX Software Engineering GmbH
6 */
7
8#include <linux/module.h>
9#include <linux/of_platform.h>
10#include <linux/platform_device.h>
11#include <linux/pm_runtime.h>
12#include <linux/usb/chipidea.h>
13#include <linux/usb/of.h>
14#include <linux/clk.h>
15#include <linux/pinctrl/consumer.h>
16#include <linux/pm_qos.h>
17
18#include "ci.h"
19#include "ci_hdrc_imx.h"
20
21struct ci_hdrc_imx_platform_flag {
22 unsigned int flags;
23};
24
25static const struct ci_hdrc_imx_platform_flag imx23_usb_data = {
26 .flags = CI_HDRC_TURN_VBUS_EARLY_ON |
27 CI_HDRC_DISABLE_STREAMING,
28};
29
30static const struct ci_hdrc_imx_platform_flag imx27_usb_data = {
31 .flags = CI_HDRC_DISABLE_STREAMING,
32};
33
34static const struct ci_hdrc_imx_platform_flag imx28_usb_data = {
35 .flags = CI_HDRC_IMX28_WRITE_FIX |
36 CI_HDRC_TURN_VBUS_EARLY_ON |
37 CI_HDRC_DISABLE_STREAMING,
38};
39
40static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = {
41 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
42 CI_HDRC_TURN_VBUS_EARLY_ON |
43 CI_HDRC_DISABLE_STREAMING,
44};
45
46static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = {
47 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
48 CI_HDRC_TURN_VBUS_EARLY_ON |
49 CI_HDRC_DISABLE_HOST_STREAMING,
50};
51
52static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = {
53 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
54 CI_HDRC_TURN_VBUS_EARLY_ON |
55 CI_HDRC_DISABLE_HOST_STREAMING,
56};
57
58static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = {
59 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
60 CI_HDRC_TURN_VBUS_EARLY_ON |
61 CI_HDRC_DISABLE_DEVICE_STREAMING,
62};
63
64static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = {
65 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM,
66};
67
68static const struct ci_hdrc_imx_platform_flag imx7ulp_usb_data = {
69 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
70 CI_HDRC_PMQOS,
71};
72
73static const struct of_device_id ci_hdrc_imx_dt_ids[] = {
74 { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data},
75 { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data},
76 { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data},
77 { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data},
78 { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data},
79 { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data},
80 { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data},
81 { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data},
82 { .compatible = "fsl,imx7ulp-usb", .data = &imx7ulp_usb_data},
83 { /* sentinel */ }
84};
85MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids);
86
87struct ci_hdrc_imx_data {
88 struct usb_phy *phy;
89 struct platform_device *ci_pdev;
90 struct clk *clk;
91 struct imx_usbmisc_data *usbmisc_data;
92 bool supports_runtime_pm;
93 bool override_phy_control;
94 bool in_lpm;
95 struct pinctrl *pinctrl;
96 struct pinctrl_state *pinctrl_hsic_active;
97 struct regulator *hsic_pad_regulator;
98 /* SoC before i.mx6 (except imx23/imx28) needs three clks */
99 bool need_three_clks;
100 struct clk *clk_ipg;
101 struct clk *clk_ahb;
102 struct clk *clk_per;
103 /* --------------------------------- */
104 struct pm_qos_request pm_qos_req;
105 const struct ci_hdrc_imx_platform_flag *plat_data;
106};
107
108/* Common functions shared by usbmisc drivers */
109
110static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
111{
112 struct platform_device *misc_pdev;
113 struct device_node *np = dev->of_node;
114 struct of_phandle_args args;
115 struct imx_usbmisc_data *data;
116 int ret;
117
118 /*
119 * In case the fsl,usbmisc property is not present this device doesn't
120 * need usbmisc. Return NULL (which is no error here)
121 */
122 if (!of_get_property(np, "fsl,usbmisc", NULL))
123 return NULL;
124
125 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
126 if (!data)
127 return ERR_PTR(-ENOMEM);
128
129 ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells",
130 0, &args);
131 if (ret) {
132 dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n",
133 ret);
134 return ERR_PTR(ret);
135 }
136
137 data->index = args.args[0];
138
139 misc_pdev = of_find_device_by_node(args.np);
140 of_node_put(args.np);
141
142 if (!misc_pdev)
143 return ERR_PTR(-EPROBE_DEFER);
144
145 if (!platform_get_drvdata(misc_pdev)) {
146 put_device(&misc_pdev->dev);
147 return ERR_PTR(-EPROBE_DEFER);
148 }
149 data->dev = &misc_pdev->dev;
150
151 /*
152 * Check the various over current related properties. If over current
153 * detection is disabled we're not interested in the polarity.
154 */
155 if (of_find_property(np, "disable-over-current", NULL)) {
156 data->disable_oc = 1;
157 } else if (of_find_property(np, "over-current-active-high", NULL)) {
158 data->oc_pol_active_low = 0;
159 data->oc_pol_configured = 1;
160 } else if (of_find_property(np, "over-current-active-low", NULL)) {
161 data->oc_pol_active_low = 1;
162 data->oc_pol_configured = 1;
163 } else {
164 dev_warn(dev, "No over current polarity defined\n");
165 }
166
167 data->pwr_pol = of_property_read_bool(np, "power-active-high");
168 data->evdo = of_property_read_bool(np, "external-vbus-divider");
169
170 if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI)
171 data->ulpi = 1;
172
173 of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control",
174 &data->emp_curr_control);
175 of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust",
176 &data->dc_vol_level_adjust);
177
178 return data;
179}
180
181/* End of common functions shared by usbmisc drivers*/
182static int imx_get_clks(struct device *dev)
183{
184 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
185 int ret = 0;
186
187 data->clk_ipg = devm_clk_get(dev, "ipg");
188 if (IS_ERR(data->clk_ipg)) {
189 /* If the platform only needs one clocks */
190 data->clk = devm_clk_get(dev, NULL);
191 if (IS_ERR(data->clk)) {
192 ret = PTR_ERR(data->clk);
193 dev_err(dev,
194 "Failed to get clks, err=%ld,%ld\n",
195 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg));
196 return ret;
197 }
198 return ret;
199 }
200
201 data->clk_ahb = devm_clk_get(dev, "ahb");
202 if (IS_ERR(data->clk_ahb)) {
203 ret = PTR_ERR(data->clk_ahb);
204 dev_err(dev,
205 "Failed to get ahb clock, err=%d\n", ret);
206 return ret;
207 }
208
209 data->clk_per = devm_clk_get(dev, "per");
210 if (IS_ERR(data->clk_per)) {
211 ret = PTR_ERR(data->clk_per);
212 dev_err(dev,
213 "Failed to get per clock, err=%d\n", ret);
214 return ret;
215 }
216
217 data->need_three_clks = true;
218 return ret;
219}
220
221static int imx_prepare_enable_clks(struct device *dev)
222{
223 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
224 int ret = 0;
225
226 if (data->need_three_clks) {
227 ret = clk_prepare_enable(data->clk_ipg);
228 if (ret) {
229 dev_err(dev,
230 "Failed to prepare/enable ipg clk, err=%d\n",
231 ret);
232 return ret;
233 }
234
235 ret = clk_prepare_enable(data->clk_ahb);
236 if (ret) {
237 dev_err(dev,
238 "Failed to prepare/enable ahb clk, err=%d\n",
239 ret);
240 clk_disable_unprepare(data->clk_ipg);
241 return ret;
242 }
243
244 ret = clk_prepare_enable(data->clk_per);
245 if (ret) {
246 dev_err(dev,
247 "Failed to prepare/enable per clk, err=%d\n",
248 ret);
249 clk_disable_unprepare(data->clk_ahb);
250 clk_disable_unprepare(data->clk_ipg);
251 return ret;
252 }
253 } else {
254 ret = clk_prepare_enable(data->clk);
255 if (ret) {
256 dev_err(dev,
257 "Failed to prepare/enable clk, err=%d\n",
258 ret);
259 return ret;
260 }
261 }
262
263 return ret;
264}
265
266static void imx_disable_unprepare_clks(struct device *dev)
267{
268 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
269
270 if (data->need_three_clks) {
271 clk_disable_unprepare(data->clk_per);
272 clk_disable_unprepare(data->clk_ahb);
273 clk_disable_unprepare(data->clk_ipg);
274 } else {
275 clk_disable_unprepare(data->clk);
276 }
277}
278
279static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event)
280{
281 struct device *dev = ci->dev->parent;
282 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
283 int ret = 0;
284 struct imx_usbmisc_data *mdata = data->usbmisc_data;
285
286 switch (event) {
287 case CI_HDRC_IMX_HSIC_ACTIVE_EVENT:
288 if (data->pinctrl) {
289 ret = pinctrl_select_state(data->pinctrl,
290 data->pinctrl_hsic_active);
291 if (ret)
292 dev_err(dev,
293 "hsic_active select failed, err=%d\n",
294 ret);
295 }
296 break;
297 case CI_HDRC_IMX_HSIC_SUSPEND_EVENT:
298 ret = imx_usbmisc_hsic_set_connect(mdata);
299 if (ret)
300 dev_err(dev,
301 "hsic_set_connect failed, err=%d\n", ret);
302 break;
303 case CI_HDRC_CONTROLLER_VBUS_EVENT:
304 if (ci->vbus_active)
305 ret = imx_usbmisc_charger_detection(mdata, true);
306 else
307 ret = imx_usbmisc_charger_detection(mdata, false);
308 if (ci->usb_phy)
309 schedule_work(&ci->usb_phy->chg_work);
310 break;
311 default:
312 break;
313 }
314
315 return ret;
316}
317
318static int ci_hdrc_imx_probe(struct platform_device *pdev)
319{
320 struct ci_hdrc_imx_data *data;
321 struct ci_hdrc_platform_data pdata = {
322 .name = dev_name(&pdev->dev),
323 .capoffset = DEF_CAPOFFSET,
324 .notify_event = ci_hdrc_imx_notify_event,
325 };
326 int ret;
327 const struct ci_hdrc_imx_platform_flag *imx_platform_flag;
328 struct device_node *np = pdev->dev.of_node;
329 struct device *dev = &pdev->dev;
330
331 imx_platform_flag = of_device_get_match_data(&pdev->dev);
332
333 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
334 if (!data)
335 return -ENOMEM;
336
337 data->plat_data = imx_platform_flag;
338 pdata.flags |= imx_platform_flag->flags;
339 platform_set_drvdata(pdev, data);
340 data->usbmisc_data = usbmisc_get_init_data(dev);
341 if (IS_ERR(data->usbmisc_data))
342 return PTR_ERR(data->usbmisc_data);
343
344 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC)
345 && data->usbmisc_data) {
346 pdata.flags |= CI_HDRC_IMX_IS_HSIC;
347 data->usbmisc_data->hsic = 1;
348 data->pinctrl = devm_pinctrl_get(dev);
349 if (PTR_ERR(data->pinctrl) == -ENODEV)
350 data->pinctrl = NULL;
351 else if (IS_ERR(data->pinctrl))
352 return dev_err_probe(dev, PTR_ERR(data->pinctrl),
353 "pinctrl get failed\n");
354
355 data->hsic_pad_regulator =
356 devm_regulator_get_optional(dev, "hsic");
357 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) {
358 /* no pad regulator is needed */
359 data->hsic_pad_regulator = NULL;
360 } else if (IS_ERR(data->hsic_pad_regulator))
361 return dev_err_probe(dev, PTR_ERR(data->hsic_pad_regulator),
362 "Get HSIC pad regulator error\n");
363
364 if (data->hsic_pad_regulator) {
365 ret = regulator_enable(data->hsic_pad_regulator);
366 if (ret) {
367 dev_err(dev,
368 "Failed to enable HSIC pad regulator\n");
369 return ret;
370 }
371 }
372 }
373
374 /* HSIC pinctrl handling */
375 if (data->pinctrl) {
376 struct pinctrl_state *pinctrl_hsic_idle;
377
378 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle");
379 if (IS_ERR(pinctrl_hsic_idle)) {
380 dev_err(dev,
381 "pinctrl_hsic_idle lookup failed, err=%ld\n",
382 PTR_ERR(pinctrl_hsic_idle));
383 return PTR_ERR(pinctrl_hsic_idle);
384 }
385
386 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle);
387 if (ret) {
388 dev_err(dev, "hsic_idle select failed, err=%d\n", ret);
389 return ret;
390 }
391
392 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl,
393 "active");
394 if (IS_ERR(data->pinctrl_hsic_active)) {
395 dev_err(dev,
396 "pinctrl_hsic_active lookup failed, err=%ld\n",
397 PTR_ERR(data->pinctrl_hsic_active));
398 return PTR_ERR(data->pinctrl_hsic_active);
399 }
400 }
401
402 if (pdata.flags & CI_HDRC_PMQOS)
403 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
404
405 ret = imx_get_clks(dev);
406 if (ret)
407 goto disable_hsic_regulator;
408
409 ret = imx_prepare_enable_clks(dev);
410 if (ret)
411 goto disable_hsic_regulator;
412
413 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0);
414 if (IS_ERR(data->phy)) {
415 ret = PTR_ERR(data->phy);
416 if (ret != -ENODEV)
417 goto err_clk;
418 data->phy = devm_usb_get_phy_by_phandle(dev, "phys", 0);
419 if (IS_ERR(data->phy)) {
420 ret = PTR_ERR(data->phy);
421 if (ret == -ENODEV)
422 data->phy = NULL;
423 else
424 goto err_clk;
425 }
426 }
427
428 pdata.usb_phy = data->phy;
429 if (data->usbmisc_data)
430 data->usbmisc_data->usb_phy = data->phy;
431
432 if ((of_device_is_compatible(np, "fsl,imx53-usb") ||
433 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy &&
434 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) {
435 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL;
436 data->override_phy_control = true;
437 usb_phy_init(pdata.usb_phy);
438 }
439
440 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM)
441 data->supports_runtime_pm = true;
442
443 ret = imx_usbmisc_init(data->usbmisc_data);
444 if (ret) {
445 dev_err(dev, "usbmisc init failed, ret=%d\n", ret);
446 goto err_clk;
447 }
448
449 data->ci_pdev = ci_hdrc_add_device(dev,
450 pdev->resource, pdev->num_resources,
451 &pdata);
452 if (IS_ERR(data->ci_pdev)) {
453 ret = PTR_ERR(data->ci_pdev);
454 dev_err_probe(dev, ret, "ci_hdrc_add_device failed\n");
455 goto err_clk;
456 }
457
458 if (data->usbmisc_data) {
459 if (!IS_ERR(pdata.id_extcon.edev) ||
460 of_property_read_bool(np, "usb-role-switch"))
461 data->usbmisc_data->ext_id = 1;
462
463 if (!IS_ERR(pdata.vbus_extcon.edev) ||
464 of_property_read_bool(np, "usb-role-switch"))
465 data->usbmisc_data->ext_vbus = 1;
466
467 /* usbmisc needs to know dr mode to choose wakeup setting */
468 data->usbmisc_data->available_role =
469 ci_hdrc_query_available_role(data->ci_pdev);
470 }
471
472 ret = imx_usbmisc_init_post(data->usbmisc_data);
473 if (ret) {
474 dev_err(dev, "usbmisc post failed, ret=%d\n", ret);
475 goto disable_device;
476 }
477
478 if (data->supports_runtime_pm) {
479 pm_runtime_set_active(dev);
480 pm_runtime_enable(dev);
481 }
482
483 device_set_wakeup_capable(dev, true);
484
485 return 0;
486
487disable_device:
488 ci_hdrc_remove_device(data->ci_pdev);
489err_clk:
490 imx_disable_unprepare_clks(dev);
491disable_hsic_regulator:
492 if (data->hsic_pad_regulator)
493 /* don't overwrite original ret (cf. EPROBE_DEFER) */
494 regulator_disable(data->hsic_pad_regulator);
495 if (pdata.flags & CI_HDRC_PMQOS)
496 cpu_latency_qos_remove_request(&data->pm_qos_req);
497 data->ci_pdev = NULL;
498 return ret;
499}
500
501static int ci_hdrc_imx_remove(struct platform_device *pdev)
502{
503 struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev);
504
505 if (data->supports_runtime_pm) {
506 pm_runtime_get_sync(&pdev->dev);
507 pm_runtime_disable(&pdev->dev);
508 pm_runtime_put_noidle(&pdev->dev);
509 }
510 if (data->ci_pdev)
511 ci_hdrc_remove_device(data->ci_pdev);
512 if (data->override_phy_control)
513 usb_phy_shutdown(data->phy);
514 if (data->ci_pdev) {
515 imx_disable_unprepare_clks(&pdev->dev);
516 if (data->plat_data->flags & CI_HDRC_PMQOS)
517 cpu_latency_qos_remove_request(&data->pm_qos_req);
518 if (data->hsic_pad_regulator)
519 regulator_disable(data->hsic_pad_regulator);
520 }
521
522 return 0;
523}
524
525static void ci_hdrc_imx_shutdown(struct platform_device *pdev)
526{
527 ci_hdrc_imx_remove(pdev);
528}
529
530static int __maybe_unused imx_controller_suspend(struct device *dev,
531 pm_message_t msg)
532{
533 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
534 int ret = 0;
535
536 dev_dbg(dev, "at %s\n", __func__);
537
538 ret = imx_usbmisc_suspend(data->usbmisc_data,
539 PMSG_IS_AUTO(msg) || device_may_wakeup(dev));
540 if (ret) {
541 dev_err(dev,
542 "usbmisc suspend failed, ret=%d\n", ret);
543 return ret;
544 }
545
546 imx_disable_unprepare_clks(dev);
547 if (data->plat_data->flags & CI_HDRC_PMQOS)
548 cpu_latency_qos_remove_request(&data->pm_qos_req);
549
550 data->in_lpm = true;
551
552 return 0;
553}
554
555static int __maybe_unused imx_controller_resume(struct device *dev,
556 pm_message_t msg)
557{
558 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
559 int ret = 0;
560
561 dev_dbg(dev, "at %s\n", __func__);
562
563 if (!data->in_lpm) {
564 WARN_ON(1);
565 return 0;
566 }
567
568 if (data->plat_data->flags & CI_HDRC_PMQOS)
569 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
570
571 ret = imx_prepare_enable_clks(dev);
572 if (ret)
573 return ret;
574
575 data->in_lpm = false;
576
577 ret = imx_usbmisc_resume(data->usbmisc_data,
578 PMSG_IS_AUTO(msg) || device_may_wakeup(dev));
579 if (ret) {
580 dev_err(dev, "usbmisc resume failed, ret=%d\n", ret);
581 goto clk_disable;
582 }
583
584 return 0;
585
586clk_disable:
587 imx_disable_unprepare_clks(dev);
588 return ret;
589}
590
591static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev)
592{
593 int ret;
594
595 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
596
597 if (data->in_lpm)
598 /* The core's suspend doesn't run */
599 return 0;
600
601 ret = imx_controller_suspend(dev, PMSG_SUSPEND);
602 if (ret)
603 return ret;
604
605 pinctrl_pm_select_sleep_state(dev);
606 return ret;
607}
608
609static int __maybe_unused ci_hdrc_imx_resume(struct device *dev)
610{
611 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
612 int ret;
613
614 pinctrl_pm_select_default_state(dev);
615 ret = imx_controller_resume(dev, PMSG_RESUME);
616 if (!ret && data->supports_runtime_pm) {
617 pm_runtime_disable(dev);
618 pm_runtime_set_active(dev);
619 pm_runtime_enable(dev);
620 }
621
622 return ret;
623}
624
625static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev)
626{
627 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
628
629 if (data->in_lpm) {
630 WARN_ON(1);
631 return 0;
632 }
633
634 return imx_controller_suspend(dev, PMSG_AUTO_SUSPEND);
635}
636
637static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev)
638{
639 return imx_controller_resume(dev, PMSG_AUTO_RESUME);
640}
641
642static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {
643 SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)
644 SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend,
645 ci_hdrc_imx_runtime_resume, NULL)
646};
647static struct platform_driver ci_hdrc_imx_driver = {
648 .probe = ci_hdrc_imx_probe,
649 .remove = ci_hdrc_imx_remove,
650 .shutdown = ci_hdrc_imx_shutdown,
651 .driver = {
652 .name = "imx_usb",
653 .of_match_table = ci_hdrc_imx_dt_ids,
654 .pm = &ci_hdrc_imx_pm_ops,
655 },
656};
657
658module_platform_driver(ci_hdrc_imx_driver);
659
660MODULE_ALIAS("platform:imx-usb");
661MODULE_LICENSE("GPL");
662MODULE_DESCRIPTION("CI HDRC i.MX USB binding");
663MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
664MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");