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