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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.h>
10#include <linux/of_platform.h>
11#include <linux/platform_device.h>
12#include <linux/pm_runtime.h>
13#include <linux/usb/chipidea.h>
14#include <linux/usb/of.h>
15#include <linux/clk.h>
16#include <linux/pinctrl/consumer.h>
17#include <linux/pm_qos.h>
18
19#include "ci.h"
20#include "ci_hdrc_imx.h"
21
22struct ci_hdrc_imx_platform_flag {
23 unsigned int flags;
24};
25
26static const struct ci_hdrc_imx_platform_flag imx23_usb_data = {
27 .flags = CI_HDRC_TURN_VBUS_EARLY_ON |
28 CI_HDRC_DISABLE_STREAMING,
29};
30
31static const struct ci_hdrc_imx_platform_flag imx27_usb_data = {
32 .flags = CI_HDRC_DISABLE_STREAMING,
33};
34
35static const struct ci_hdrc_imx_platform_flag imx28_usb_data = {
36 .flags = CI_HDRC_IMX28_WRITE_FIX |
37 CI_HDRC_TURN_VBUS_EARLY_ON |
38 CI_HDRC_DISABLE_STREAMING,
39};
40
41static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = {
42 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
43 CI_HDRC_TURN_VBUS_EARLY_ON |
44 CI_HDRC_DISABLE_STREAMING,
45};
46
47static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = {
48 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
49 CI_HDRC_TURN_VBUS_EARLY_ON |
50 CI_HDRC_DISABLE_HOST_STREAMING,
51};
52
53static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = {
54 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
55 CI_HDRC_TURN_VBUS_EARLY_ON |
56 CI_HDRC_DISABLE_HOST_STREAMING,
57};
58
59static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = {
60 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
61 CI_HDRC_TURN_VBUS_EARLY_ON |
62 CI_HDRC_DISABLE_DEVICE_STREAMING,
63};
64
65static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = {
66 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM,
67};
68
69static const struct ci_hdrc_imx_platform_flag imx7ulp_usb_data = {
70 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
71 CI_HDRC_HAS_PORTSC_PEC_MISSED |
72 CI_HDRC_PMQOS,
73};
74
75static const struct ci_hdrc_imx_platform_flag imx8ulp_usb_data = {
76 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
77 CI_HDRC_HAS_PORTSC_PEC_MISSED,
78};
79
80static const struct of_device_id ci_hdrc_imx_dt_ids[] = {
81 { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data},
82 { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data},
83 { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data},
84 { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data},
85 { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data},
86 { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data},
87 { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data},
88 { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data},
89 { .compatible = "fsl,imx7ulp-usb", .data = &imx7ulp_usb_data},
90 { .compatible = "fsl,imx8ulp-usb", .data = &imx8ulp_usb_data},
91 { /* sentinel */ }
92};
93MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids);
94
95struct ci_hdrc_imx_data {
96 struct usb_phy *phy;
97 struct platform_device *ci_pdev;
98 struct clk *clk;
99 struct clk *clk_wakeup;
100 struct imx_usbmisc_data *usbmisc_data;
101 bool supports_runtime_pm;
102 bool override_phy_control;
103 bool in_lpm;
104 struct pinctrl *pinctrl;
105 struct pinctrl_state *pinctrl_hsic_active;
106 struct regulator *hsic_pad_regulator;
107 /* SoC before i.mx6 (except imx23/imx28) needs three clks */
108 bool need_three_clks;
109 struct clk *clk_ipg;
110 struct clk *clk_ahb;
111 struct clk *clk_per;
112 /* --------------------------------- */
113 struct pm_qos_request pm_qos_req;
114 const struct ci_hdrc_imx_platform_flag *plat_data;
115};
116
117/* Common functions shared by usbmisc drivers */
118
119static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
120{
121 struct platform_device *misc_pdev;
122 struct device_node *np = dev->of_node;
123 struct of_phandle_args args;
124 struct imx_usbmisc_data *data;
125 int ret;
126
127 /*
128 * In case the fsl,usbmisc property is not present this device doesn't
129 * need usbmisc. Return NULL (which is no error here)
130 */
131 if (!of_property_present(np, "fsl,usbmisc"))
132 return NULL;
133
134 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
135 if (!data)
136 return ERR_PTR(-ENOMEM);
137
138 ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells",
139 0, &args);
140 if (ret) {
141 dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n",
142 ret);
143 return ERR_PTR(ret);
144 }
145
146 data->index = args.args[0];
147
148 misc_pdev = of_find_device_by_node(args.np);
149 of_node_put(args.np);
150
151 if (!misc_pdev)
152 return ERR_PTR(-EPROBE_DEFER);
153
154 if (!platform_get_drvdata(misc_pdev)) {
155 put_device(&misc_pdev->dev);
156 return ERR_PTR(-EPROBE_DEFER);
157 }
158 data->dev = &misc_pdev->dev;
159
160 /*
161 * Check the various over current related properties. If over current
162 * detection is disabled we're not interested in the polarity.
163 */
164 if (of_property_read_bool(np, "disable-over-current")) {
165 data->disable_oc = 1;
166 } else if (of_property_read_bool(np, "over-current-active-high")) {
167 data->oc_pol_active_low = 0;
168 data->oc_pol_configured = 1;
169 } else if (of_property_read_bool(np, "over-current-active-low")) {
170 data->oc_pol_active_low = 1;
171 data->oc_pol_configured = 1;
172 } else {
173 dev_warn(dev, "No over current polarity defined\n");
174 }
175
176 data->pwr_pol = of_property_read_bool(np, "power-active-high");
177 data->evdo = of_property_read_bool(np, "external-vbus-divider");
178
179 if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI)
180 data->ulpi = 1;
181
182 if (of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control",
183 &data->emp_curr_control))
184 data->emp_curr_control = -1;
185 if (of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust",
186 &data->dc_vol_level_adjust))
187 data->dc_vol_level_adjust = -1;
188 if (of_property_read_u32(np, "fsl,picophy-rise-fall-time-adjust",
189 &data->rise_fall_time_adjust))
190 data->rise_fall_time_adjust = -1;
191
192 return data;
193}
194
195/* End of common functions shared by usbmisc drivers*/
196static int imx_get_clks(struct device *dev)
197{
198 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
199 int ret = 0;
200
201 data->clk_ipg = devm_clk_get(dev, "ipg");
202 if (IS_ERR(data->clk_ipg)) {
203 /* If the platform only needs one primary clock */
204 data->clk = devm_clk_get(dev, NULL);
205 if (IS_ERR(data->clk)) {
206 ret = PTR_ERR(data->clk);
207 dev_err(dev,
208 "Failed to get clks, err=%ld,%ld\n",
209 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg));
210 return ret;
211 }
212 /* Get wakeup clock. Not all of the platforms need to
213 * handle this clock. So make it optional.
214 */
215 data->clk_wakeup = devm_clk_get_optional(dev, "usb_wakeup");
216 if (IS_ERR(data->clk_wakeup))
217 ret = dev_err_probe(dev, PTR_ERR(data->clk_wakeup),
218 "Failed to get wakeup clk\n");
219 return ret;
220 }
221
222 data->clk_ahb = devm_clk_get(dev, "ahb");
223 if (IS_ERR(data->clk_ahb)) {
224 ret = PTR_ERR(data->clk_ahb);
225 dev_err(dev,
226 "Failed to get ahb clock, err=%d\n", ret);
227 return ret;
228 }
229
230 data->clk_per = devm_clk_get(dev, "per");
231 if (IS_ERR(data->clk_per)) {
232 ret = PTR_ERR(data->clk_per);
233 dev_err(dev,
234 "Failed to get per clock, err=%d\n", ret);
235 return ret;
236 }
237
238 data->need_three_clks = true;
239 return ret;
240}
241
242static int imx_prepare_enable_clks(struct device *dev)
243{
244 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
245 int ret = 0;
246
247 if (data->need_three_clks) {
248 ret = clk_prepare_enable(data->clk_ipg);
249 if (ret) {
250 dev_err(dev,
251 "Failed to prepare/enable ipg clk, err=%d\n",
252 ret);
253 return ret;
254 }
255
256 ret = clk_prepare_enable(data->clk_ahb);
257 if (ret) {
258 dev_err(dev,
259 "Failed to prepare/enable ahb clk, err=%d\n",
260 ret);
261 clk_disable_unprepare(data->clk_ipg);
262 return ret;
263 }
264
265 ret = clk_prepare_enable(data->clk_per);
266 if (ret) {
267 dev_err(dev,
268 "Failed to prepare/enable per clk, err=%d\n",
269 ret);
270 clk_disable_unprepare(data->clk_ahb);
271 clk_disable_unprepare(data->clk_ipg);
272 return ret;
273 }
274 } else {
275 ret = clk_prepare_enable(data->clk);
276 if (ret) {
277 dev_err(dev,
278 "Failed to prepare/enable clk, err=%d\n",
279 ret);
280 return ret;
281 }
282 }
283
284 return ret;
285}
286
287static void imx_disable_unprepare_clks(struct device *dev)
288{
289 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
290
291 if (data->need_three_clks) {
292 clk_disable_unprepare(data->clk_per);
293 clk_disable_unprepare(data->clk_ahb);
294 clk_disable_unprepare(data->clk_ipg);
295 } else {
296 clk_disable_unprepare(data->clk);
297 }
298}
299
300static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event)
301{
302 struct device *dev = ci->dev->parent;
303 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
304 int ret = 0;
305 struct imx_usbmisc_data *mdata = data->usbmisc_data;
306
307 switch (event) {
308 case CI_HDRC_IMX_HSIC_ACTIVE_EVENT:
309 if (data->pinctrl) {
310 ret = pinctrl_select_state(data->pinctrl,
311 data->pinctrl_hsic_active);
312 if (ret)
313 dev_err(dev,
314 "hsic_active select failed, err=%d\n",
315 ret);
316 }
317 break;
318 case CI_HDRC_IMX_HSIC_SUSPEND_EVENT:
319 ret = imx_usbmisc_hsic_set_connect(mdata);
320 if (ret)
321 dev_err(dev,
322 "hsic_set_connect failed, err=%d\n", ret);
323 break;
324 case CI_HDRC_CONTROLLER_VBUS_EVENT:
325 if (ci->vbus_active)
326 ret = imx_usbmisc_charger_detection(mdata, true);
327 else
328 ret = imx_usbmisc_charger_detection(mdata, false);
329 if (ci->usb_phy)
330 schedule_work(&ci->usb_phy->chg_work);
331 break;
332 default:
333 break;
334 }
335
336 return ret;
337}
338
339static int ci_hdrc_imx_probe(struct platform_device *pdev)
340{
341 struct ci_hdrc_imx_data *data;
342 struct ci_hdrc_platform_data pdata = {
343 .name = dev_name(&pdev->dev),
344 .capoffset = DEF_CAPOFFSET,
345 .flags = CI_HDRC_HAS_SHORT_PKT_LIMIT,
346 .notify_event = ci_hdrc_imx_notify_event,
347 };
348 int ret;
349 const struct ci_hdrc_imx_platform_flag *imx_platform_flag;
350 struct device_node *np = pdev->dev.of_node;
351 struct device *dev = &pdev->dev;
352
353 imx_platform_flag = of_device_get_match_data(&pdev->dev);
354
355 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
356 if (!data)
357 return -ENOMEM;
358
359 data->plat_data = imx_platform_flag;
360 pdata.flags |= imx_platform_flag->flags;
361 platform_set_drvdata(pdev, data);
362 data->usbmisc_data = usbmisc_get_init_data(dev);
363 if (IS_ERR(data->usbmisc_data))
364 return PTR_ERR(data->usbmisc_data);
365
366 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC)
367 && data->usbmisc_data) {
368 pdata.flags |= CI_HDRC_IMX_IS_HSIC;
369 data->usbmisc_data->hsic = 1;
370 data->pinctrl = devm_pinctrl_get(dev);
371 if (PTR_ERR(data->pinctrl) == -ENODEV)
372 data->pinctrl = NULL;
373 else if (IS_ERR(data->pinctrl)) {
374 ret = dev_err_probe(dev, PTR_ERR(data->pinctrl),
375 "pinctrl get failed\n");
376 goto err_put;
377 }
378
379 data->hsic_pad_regulator =
380 devm_regulator_get_optional(dev, "hsic");
381 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) {
382 /* no pad regulator is needed */
383 data->hsic_pad_regulator = NULL;
384 } else if (IS_ERR(data->hsic_pad_regulator)) {
385 ret = dev_err_probe(dev, PTR_ERR(data->hsic_pad_regulator),
386 "Get HSIC pad regulator error\n");
387 goto err_put;
388 }
389
390 if (data->hsic_pad_regulator) {
391 ret = regulator_enable(data->hsic_pad_regulator);
392 if (ret) {
393 dev_err(dev,
394 "Failed to enable HSIC pad regulator\n");
395 goto err_put;
396 }
397 }
398 }
399
400 /* HSIC pinctrl handling */
401 if (data->pinctrl) {
402 struct pinctrl_state *pinctrl_hsic_idle;
403
404 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle");
405 if (IS_ERR(pinctrl_hsic_idle)) {
406 dev_err(dev,
407 "pinctrl_hsic_idle lookup failed, err=%ld\n",
408 PTR_ERR(pinctrl_hsic_idle));
409 ret = PTR_ERR(pinctrl_hsic_idle);
410 goto err_put;
411 }
412
413 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle);
414 if (ret) {
415 dev_err(dev, "hsic_idle select failed, err=%d\n", ret);
416 goto err_put;
417 }
418
419 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl,
420 "active");
421 if (IS_ERR(data->pinctrl_hsic_active)) {
422 dev_err(dev,
423 "pinctrl_hsic_active lookup failed, err=%ld\n",
424 PTR_ERR(data->pinctrl_hsic_active));
425 ret = PTR_ERR(data->pinctrl_hsic_active);
426 goto err_put;
427 }
428 }
429
430 if (pdata.flags & CI_HDRC_PMQOS)
431 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
432
433 ret = imx_get_clks(dev);
434 if (ret)
435 goto disable_hsic_regulator;
436
437 ret = imx_prepare_enable_clks(dev);
438 if (ret)
439 goto disable_hsic_regulator;
440
441 ret = clk_prepare_enable(data->clk_wakeup);
442 if (ret)
443 goto err_wakeup_clk;
444
445 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0);
446 if (IS_ERR(data->phy)) {
447 ret = PTR_ERR(data->phy);
448 if (ret != -ENODEV) {
449 dev_err_probe(dev, ret, "Failed to parse fsl,usbphy\n");
450 goto err_clk;
451 }
452 data->phy = devm_usb_get_phy_by_phandle(dev, "phys", 0);
453 if (IS_ERR(data->phy)) {
454 ret = PTR_ERR(data->phy);
455 if (ret == -ENODEV) {
456 data->phy = NULL;
457 } else {
458 dev_err_probe(dev, ret, "Failed to parse phys\n");
459 goto err_clk;
460 }
461 }
462 }
463
464 pdata.usb_phy = data->phy;
465 if (data->usbmisc_data)
466 data->usbmisc_data->usb_phy = data->phy;
467
468 if ((of_device_is_compatible(np, "fsl,imx53-usb") ||
469 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy &&
470 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) {
471 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL;
472 data->override_phy_control = true;
473 usb_phy_init(pdata.usb_phy);
474 }
475
476 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM)
477 data->supports_runtime_pm = true;
478
479 ret = imx_usbmisc_init(data->usbmisc_data);
480 if (ret) {
481 dev_err(dev, "usbmisc init failed, ret=%d\n", ret);
482 goto err_clk;
483 }
484
485 data->ci_pdev = ci_hdrc_add_device(dev,
486 pdev->resource, pdev->num_resources,
487 &pdata);
488 if (IS_ERR(data->ci_pdev)) {
489 ret = PTR_ERR(data->ci_pdev);
490 dev_err_probe(dev, ret, "ci_hdrc_add_device failed\n");
491 goto err_clk;
492 }
493
494 if (data->usbmisc_data) {
495 if (!IS_ERR(pdata.id_extcon.edev) ||
496 of_property_read_bool(np, "usb-role-switch"))
497 data->usbmisc_data->ext_id = 1;
498
499 if (!IS_ERR(pdata.vbus_extcon.edev) ||
500 of_property_read_bool(np, "usb-role-switch"))
501 data->usbmisc_data->ext_vbus = 1;
502
503 /* usbmisc needs to know dr mode to choose wakeup setting */
504 data->usbmisc_data->available_role =
505 ci_hdrc_query_available_role(data->ci_pdev);
506 }
507
508 ret = imx_usbmisc_init_post(data->usbmisc_data);
509 if (ret) {
510 dev_err(dev, "usbmisc post failed, ret=%d\n", ret);
511 goto disable_device;
512 }
513
514 if (data->supports_runtime_pm) {
515 pm_runtime_set_active(dev);
516 pm_runtime_enable(dev);
517 }
518
519 device_set_wakeup_capable(dev, true);
520
521 return 0;
522
523disable_device:
524 ci_hdrc_remove_device(data->ci_pdev);
525err_clk:
526 clk_disable_unprepare(data->clk_wakeup);
527err_wakeup_clk:
528 imx_disable_unprepare_clks(dev);
529disable_hsic_regulator:
530 if (data->hsic_pad_regulator)
531 /* don't overwrite original ret (cf. EPROBE_DEFER) */
532 regulator_disable(data->hsic_pad_regulator);
533 if (pdata.flags & CI_HDRC_PMQOS)
534 cpu_latency_qos_remove_request(&data->pm_qos_req);
535 data->ci_pdev = NULL;
536err_put:
537 put_device(data->usbmisc_data->dev);
538 return ret;
539}
540
541static void ci_hdrc_imx_remove(struct platform_device *pdev)
542{
543 struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev);
544
545 if (data->supports_runtime_pm) {
546 pm_runtime_get_sync(&pdev->dev);
547 pm_runtime_disable(&pdev->dev);
548 pm_runtime_put_noidle(&pdev->dev);
549 }
550 if (data->ci_pdev)
551 ci_hdrc_remove_device(data->ci_pdev);
552 if (data->override_phy_control)
553 usb_phy_shutdown(data->phy);
554 if (data->ci_pdev) {
555 imx_disable_unprepare_clks(&pdev->dev);
556 clk_disable_unprepare(data->clk_wakeup);
557 if (data->plat_data->flags & CI_HDRC_PMQOS)
558 cpu_latency_qos_remove_request(&data->pm_qos_req);
559 if (data->hsic_pad_regulator)
560 regulator_disable(data->hsic_pad_regulator);
561 }
562 put_device(data->usbmisc_data->dev);
563}
564
565static void ci_hdrc_imx_shutdown(struct platform_device *pdev)
566{
567 ci_hdrc_imx_remove(pdev);
568}
569
570static int imx_controller_suspend(struct device *dev,
571 pm_message_t msg)
572{
573 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
574 int ret = 0;
575
576 dev_dbg(dev, "at %s\n", __func__);
577
578 ret = imx_usbmisc_suspend(data->usbmisc_data,
579 PMSG_IS_AUTO(msg) || device_may_wakeup(dev));
580 if (ret) {
581 dev_err(dev,
582 "usbmisc suspend failed, ret=%d\n", ret);
583 return ret;
584 }
585
586 imx_disable_unprepare_clks(dev);
587 if (data->plat_data->flags & CI_HDRC_PMQOS)
588 cpu_latency_qos_remove_request(&data->pm_qos_req);
589
590 data->in_lpm = true;
591
592 return 0;
593}
594
595static int imx_controller_resume(struct device *dev,
596 pm_message_t msg)
597{
598 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
599 int ret = 0;
600
601 dev_dbg(dev, "at %s\n", __func__);
602
603 if (!data->in_lpm) {
604 WARN_ON(1);
605 return 0;
606 }
607
608 if (data->plat_data->flags & CI_HDRC_PMQOS)
609 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
610
611 ret = imx_prepare_enable_clks(dev);
612 if (ret)
613 return ret;
614
615 data->in_lpm = false;
616
617 ret = imx_usbmisc_resume(data->usbmisc_data,
618 PMSG_IS_AUTO(msg) || device_may_wakeup(dev));
619 if (ret) {
620 dev_err(dev, "usbmisc resume failed, ret=%d\n", ret);
621 goto clk_disable;
622 }
623
624 return 0;
625
626clk_disable:
627 imx_disable_unprepare_clks(dev);
628 return ret;
629}
630
631static int ci_hdrc_imx_suspend(struct device *dev)
632{
633 int ret;
634
635 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
636
637 if (data->in_lpm)
638 /* The core's suspend doesn't run */
639 return 0;
640
641 ret = imx_controller_suspend(dev, PMSG_SUSPEND);
642 if (ret)
643 return ret;
644
645 pinctrl_pm_select_sleep_state(dev);
646 return ret;
647}
648
649static int ci_hdrc_imx_resume(struct device *dev)
650{
651 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
652 int ret;
653
654 pinctrl_pm_select_default_state(dev);
655 ret = imx_controller_resume(dev, PMSG_RESUME);
656 if (!ret && data->supports_runtime_pm) {
657 pm_runtime_disable(dev);
658 pm_runtime_set_active(dev);
659 pm_runtime_enable(dev);
660 }
661
662 return ret;
663}
664
665static int ci_hdrc_imx_runtime_suspend(struct device *dev)
666{
667 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
668
669 if (data->in_lpm) {
670 WARN_ON(1);
671 return 0;
672 }
673
674 return imx_controller_suspend(dev, PMSG_AUTO_SUSPEND);
675}
676
677static int ci_hdrc_imx_runtime_resume(struct device *dev)
678{
679 return imx_controller_resume(dev, PMSG_AUTO_RESUME);
680}
681
682static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {
683 SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)
684 RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, ci_hdrc_imx_runtime_resume, NULL)
685};
686static struct platform_driver ci_hdrc_imx_driver = {
687 .probe = ci_hdrc_imx_probe,
688 .remove = ci_hdrc_imx_remove,
689 .shutdown = ci_hdrc_imx_shutdown,
690 .driver = {
691 .name = "imx_usb",
692 .of_match_table = ci_hdrc_imx_dt_ids,
693 .pm = pm_ptr(&ci_hdrc_imx_pm_ops),
694 },
695};
696
697module_platform_driver(ci_hdrc_imx_driver);
698
699MODULE_ALIAS("platform:imx-usb");
700MODULE_LICENSE("GPL");
701MODULE_DESCRIPTION("CI HDRC i.MX USB binding");
702MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
703MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");