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mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path
[linux/fpc-iii.git] / drivers / usb / dwc3 / dwc3-qcom.c
blob1dfd024cd06b11ff2a0409acff192890d7754bef
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2018, The Linux Foundation. All rights reserved.
3 *
4 * Inspired by dwc3-of-simple.c
5 */
6
7 #include <linux/acpi.h>
8 #include <linux/io.h>
9 #include <linux/of.h>
10 #include <linux/clk.h>
11 #include <linux/irq.h>
12 #include <linux/of_clk.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/extcon.h>
16 #include <linux/of_platform.h>
17 #include <linux/platform_device.h>
18 #include <linux/phy/phy.h>
19 #include <linux/usb/of.h>
20 #include <linux/reset.h>
21 #include <linux/iopoll.h>
22
23 #include "core.h"
24
25 /* USB QSCRATCH Hardware registers */
26 #define QSCRATCH_HS_PHY_CTRL 0x10
27 #define UTMI_OTG_VBUS_VALID BIT(20)
28 #define SW_SESSVLD_SEL BIT(28)
29
30 #define QSCRATCH_SS_PHY_CTRL 0x30
31 #define LANE0_PWR_PRESENT BIT(24)
32
33 #define QSCRATCH_GENERAL_CFG 0x08
34 #define PIPE_UTMI_CLK_SEL BIT(0)
35 #define PIPE3_PHYSTATUS_SW BIT(3)
36 #define PIPE_UTMI_CLK_DIS BIT(8)
37
38 #define PWR_EVNT_IRQ_STAT_REG 0x58
39 #define PWR_EVNT_LPM_IN_L2_MASK BIT(4)
40 #define PWR_EVNT_LPM_OUT_L2_MASK BIT(5)
41
42 #define SDM845_QSCRATCH_BASE_OFFSET 0xf8800
43 #define SDM845_QSCRATCH_SIZE 0x400
44 #define SDM845_DWC3_CORE_SIZE 0xcd00
45
46 struct dwc3_acpi_pdata {
47 u32 qscratch_base_offset;
48 u32 qscratch_base_size;
49 u32 dwc3_core_base_size;
50 int hs_phy_irq_index;
51 int dp_hs_phy_irq_index;
52 int dm_hs_phy_irq_index;
53 int ss_phy_irq_index;
54 };
55
56 struct dwc3_qcom {
57 struct device *dev;
58 void __iomem *qscratch_base;
59 struct platform_device *dwc3;
60 struct clk **clks;
61 int num_clocks;
62 struct reset_control *resets;
63
64 int hs_phy_irq;
65 int dp_hs_phy_irq;
66 int dm_hs_phy_irq;
67 int ss_phy_irq;
68
69 struct extcon_dev *edev;
70 struct extcon_dev *host_edev;
71 struct notifier_block vbus_nb;
72 struct notifier_block host_nb;
73
74 const struct dwc3_acpi_pdata *acpi_pdata;
75
76 enum usb_dr_mode mode;
77 bool is_suspended;
78 bool pm_suspended;
79 };
80
81 static inline void dwc3_qcom_setbits(void __iomem *base, u32 offset, u32 val)
82 {
83 u32 reg;
84
85 reg = readl(base + offset);
86 reg |= val;
87 writel(reg, base + offset);
88
89 /* ensure that above write is through */
90 readl(base + offset);
91 }
92
93 static inline void dwc3_qcom_clrbits(void __iomem *base, u32 offset, u32 val)
94 {
95 u32 reg;
96
97 reg = readl(base + offset);
98 reg &= ~val;
99 writel(reg, base + offset);
100
101 /* ensure that above write is through */
102 readl(base + offset);
103 }
104
105 static void dwc3_qcom_vbus_overrride_enable(struct dwc3_qcom *qcom, bool enable)
106 {
107 if (enable) {
108 dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL,
109 LANE0_PWR_PRESENT);
110 dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_HS_PHY_CTRL,
111 UTMI_OTG_VBUS_VALID | SW_SESSVLD_SEL);
112 } else {
113 dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_SS_PHY_CTRL,
114 LANE0_PWR_PRESENT);
115 dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_HS_PHY_CTRL,
116 UTMI_OTG_VBUS_VALID | SW_SESSVLD_SEL);
117 }
118 }
119
120 static int dwc3_qcom_vbus_notifier(struct notifier_block *nb,
121 unsigned long event, void *ptr)
122 {
123 struct dwc3_qcom *qcom = container_of(nb, struct dwc3_qcom, vbus_nb);
124
125 /* enable vbus override for device mode */
126 dwc3_qcom_vbus_overrride_enable(qcom, event);
127 qcom->mode = event ? USB_DR_MODE_PERIPHERAL : USB_DR_MODE_HOST;
128
129 return NOTIFY_DONE;
130 }
131
132 static int dwc3_qcom_host_notifier(struct notifier_block *nb,
133 unsigned long event, void *ptr)
134 {
135 struct dwc3_qcom *qcom = container_of(nb, struct dwc3_qcom, host_nb);
136
137 /* disable vbus override in host mode */
138 dwc3_qcom_vbus_overrride_enable(qcom, !event);
139 qcom->mode = event ? USB_DR_MODE_HOST : USB_DR_MODE_PERIPHERAL;
140
141 return NOTIFY_DONE;
142 }
143
144 static int dwc3_qcom_register_extcon(struct dwc3_qcom *qcom)
145 {
146 struct device *dev = qcom->dev;
147 struct extcon_dev *host_edev;
148 int ret;
149
150 if (!of_property_read_bool(dev->of_node, "extcon"))
151 return 0;
152
153 qcom->edev = extcon_get_edev_by_phandle(dev, 0);
154 if (IS_ERR(qcom->edev))
155 return PTR_ERR(qcom->edev);
156
157 qcom->vbus_nb.notifier_call = dwc3_qcom_vbus_notifier;
158
159 qcom->host_edev = extcon_get_edev_by_phandle(dev, 1);
160 if (IS_ERR(qcom->host_edev))
161 qcom->host_edev = NULL;
162
163 ret = devm_extcon_register_notifier(dev, qcom->edev, EXTCON_USB,
164 &qcom->vbus_nb);
165 if (ret < 0) {
166 dev_err(dev, "VBUS notifier register failed\n");
167 return ret;
168 }
169
170 if (qcom->host_edev)
171 host_edev = qcom->host_edev;
172 else
173 host_edev = qcom->edev;
174
175 qcom->host_nb.notifier_call = dwc3_qcom_host_notifier;
176 ret = devm_extcon_register_notifier(dev, host_edev, EXTCON_USB_HOST,
177 &qcom->host_nb);
178 if (ret < 0) {
179 dev_err(dev, "Host notifier register failed\n");
180 return ret;
181 }
182
183 /* Update initial VBUS override based on extcon state */
184 if (extcon_get_state(qcom->edev, EXTCON_USB) ||
185 !extcon_get_state(host_edev, EXTCON_USB_HOST))
186 dwc3_qcom_vbus_notifier(&qcom->vbus_nb, true, qcom->edev);
187 else
188 dwc3_qcom_vbus_notifier(&qcom->vbus_nb, false, qcom->edev);
189
190 return 0;
191 }
192
193 static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom)
194 {
195 if (qcom->hs_phy_irq) {
196 disable_irq_wake(qcom->hs_phy_irq);
197 disable_irq_nosync(qcom->hs_phy_irq);
198 }
199
200 if (qcom->dp_hs_phy_irq) {
201 disable_irq_wake(qcom->dp_hs_phy_irq);
202 disable_irq_nosync(qcom->dp_hs_phy_irq);
203 }
204
205 if (qcom->dm_hs_phy_irq) {
206 disable_irq_wake(qcom->dm_hs_phy_irq);
207 disable_irq_nosync(qcom->dm_hs_phy_irq);
208 }
209
210 if (qcom->ss_phy_irq) {
211 disable_irq_wake(qcom->ss_phy_irq);
212 disable_irq_nosync(qcom->ss_phy_irq);
213 }
214 }
215
216 static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom)
217 {
218 if (qcom->hs_phy_irq) {
219 enable_irq(qcom->hs_phy_irq);
220 enable_irq_wake(qcom->hs_phy_irq);
221 }
222
223 if (qcom->dp_hs_phy_irq) {
224 enable_irq(qcom->dp_hs_phy_irq);
225 enable_irq_wake(qcom->dp_hs_phy_irq);
226 }
227
228 if (qcom->dm_hs_phy_irq) {
229 enable_irq(qcom->dm_hs_phy_irq);
230 enable_irq_wake(qcom->dm_hs_phy_irq);
231 }
232
233 if (qcom->ss_phy_irq) {
234 enable_irq(qcom->ss_phy_irq);
235 enable_irq_wake(qcom->ss_phy_irq);
236 }
237 }
238
239 static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
240 {
241 u32 val;
242 int i;
243
244 if (qcom->is_suspended)
245 return 0;
246
247 val = readl(qcom->qscratch_base + PWR_EVNT_IRQ_STAT_REG);
248 if (!(val & PWR_EVNT_LPM_IN_L2_MASK))
249 dev_err(qcom->dev, "HS-PHY not in L2\n");
250
251 for (i = qcom->num_clocks - 1; i >= 0; i--)
252 clk_disable_unprepare(qcom->clks[i]);
253
254 qcom->is_suspended = true;
255 dwc3_qcom_enable_interrupts(qcom);
256
257 return 0;
258 }
259
260 static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
261 {
262 int ret;
263 int i;
264
265 if (!qcom->is_suspended)
266 return 0;
267
268 dwc3_qcom_disable_interrupts(qcom);
269
270 for (i = 0; i < qcom->num_clocks; i++) {
271 ret = clk_prepare_enable(qcom->clks[i]);
272 if (ret < 0) {
273 while (--i >= 0)
274 clk_disable_unprepare(qcom->clks[i]);
275 return ret;
276 }
277 }
278
279 /* Clear existing events from PHY related to L2 in/out */
280 dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG,
281 PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK);
282
283 qcom->is_suspended = false;
284
285 return 0;
286 }
287
288 static irqreturn_t qcom_dwc3_resume_irq(int irq, void *data)
289 {
290 struct dwc3_qcom *qcom = data;
291 struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3);
292
293 /* If pm_suspended then let pm_resume take care of resuming h/w */
294 if (qcom->pm_suspended)
295 return IRQ_HANDLED;
296
297 if (dwc->xhci)
298 pm_runtime_resume(&dwc->xhci->dev);
299
300 return IRQ_HANDLED;
301 }
302
303 static void dwc3_qcom_select_utmi_clk(struct dwc3_qcom *qcom)
304 {
305 /* Configure dwc3 to use UTMI clock as PIPE clock not present */
306 dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG,
307 PIPE_UTMI_CLK_DIS);
308
309 usleep_range(100, 1000);
310
311 dwc3_qcom_setbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG,
312 PIPE_UTMI_CLK_SEL | PIPE3_PHYSTATUS_SW);
313
314 usleep_range(100, 1000);
315
316 dwc3_qcom_clrbits(qcom->qscratch_base, QSCRATCH_GENERAL_CFG,
317 PIPE_UTMI_CLK_DIS);
318 }
319
320 static int dwc3_qcom_get_irq(struct platform_device *pdev,
321 const char *name, int num)
322 {
323 struct device_node *np = pdev->dev.of_node;
324 int ret;
325
326 if (np)
327 ret = platform_get_irq_byname(pdev, name);
328 else
329 ret = platform_get_irq(pdev, num);
330
331 return ret;
332 }
333
334 static int dwc3_qcom_setup_irq(struct platform_device *pdev)
335 {
336 struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
337 const struct dwc3_acpi_pdata *pdata = qcom->acpi_pdata;
338 int irq, ret;
339 irq = dwc3_qcom_get_irq(pdev, "hs_phy_irq",
340 pdata ? pdata->hs_phy_irq_index : -1);
341 if (irq > 0) {
342 /* Keep wakeup interrupts disabled until suspend */
343 irq_set_status_flags(irq, IRQ_NOAUTOEN);
344 ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
345 qcom_dwc3_resume_irq,
346 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
347 "qcom_dwc3 HS", qcom);
348 if (ret) {
349 dev_err(qcom->dev, "hs_phy_irq failed: %d\n", ret);
350 return ret;
351 }
352 qcom->hs_phy_irq = irq;
353 }
354
355 irq = dwc3_qcom_get_irq(pdev, "dp_hs_phy_irq",
356 pdata ? pdata->dp_hs_phy_irq_index : -1);
357 if (irq > 0) {
358 irq_set_status_flags(irq, IRQ_NOAUTOEN);
359 ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
360 qcom_dwc3_resume_irq,
361 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
362 "qcom_dwc3 DP_HS", qcom);
363 if (ret) {
364 dev_err(qcom->dev, "dp_hs_phy_irq failed: %d\n", ret);
365 return ret;
366 }
367 qcom->dp_hs_phy_irq = irq;
368 }
369
370 irq = dwc3_qcom_get_irq(pdev, "dm_hs_phy_irq",
371 pdata ? pdata->dm_hs_phy_irq_index : -1);
372 if (irq > 0) {
373 irq_set_status_flags(irq, IRQ_NOAUTOEN);
374 ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
375 qcom_dwc3_resume_irq,
376 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
377 "qcom_dwc3 DM_HS", qcom);
378 if (ret) {
379 dev_err(qcom->dev, "dm_hs_phy_irq failed: %d\n", ret);
380 return ret;
381 }
382 qcom->dm_hs_phy_irq = irq;
383 }
384
385 irq = dwc3_qcom_get_irq(pdev, "ss_phy_irq",
386 pdata ? pdata->ss_phy_irq_index : -1);
387 if (irq > 0) {
388 irq_set_status_flags(irq, IRQ_NOAUTOEN);
389 ret = devm_request_threaded_irq(qcom->dev, irq, NULL,
390 qcom_dwc3_resume_irq,
391 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
392 "qcom_dwc3 SS", qcom);
393 if (ret) {
394 dev_err(qcom->dev, "ss_phy_irq failed: %d\n", ret);
395 return ret;
396 }
397 qcom->ss_phy_irq = irq;
398 }
399
400 return 0;
401 }
402
403 static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int count)
404 {
405 struct device *dev = qcom->dev;
406 struct device_node *np = dev->of_node;
407 int i;
408
409 if (!np || !count)
410 return 0;
411
412 if (count < 0)
413 return count;
414
415 qcom->num_clocks = count;
416
417 qcom->clks = devm_kcalloc(dev, qcom->num_clocks,
418 sizeof(struct clk *), GFP_KERNEL);
419 if (!qcom->clks)
420 return -ENOMEM;
421
422 for (i = 0; i < qcom->num_clocks; i++) {
423 struct clk *clk;
424 int ret;
425
426 clk = of_clk_get(np, i);
427 if (IS_ERR(clk)) {
428 while (--i >= 0)
429 clk_put(qcom->clks[i]);
430 return PTR_ERR(clk);
431 }
432
433 ret = clk_prepare_enable(clk);
434 if (ret < 0) {
435 while (--i >= 0) {
436 clk_disable_unprepare(qcom->clks[i]);
437 clk_put(qcom->clks[i]);
438 }
439 clk_put(clk);
440
441 return ret;
442 }
443
444 qcom->clks[i] = clk;
445 }
446
447 return 0;
448 }
449
450 static const struct property_entry dwc3_qcom_acpi_properties[] = {
451 PROPERTY_ENTRY_STRING("dr_mode", "host"),
452 {}
453 };
454
455 static int dwc3_qcom_acpi_register_core(struct platform_device *pdev)
456 {
457 struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
458 struct device *dev = &pdev->dev;
459 struct resource *res, *child_res = NULL;
460 int irq;
461 int ret;
462
463 qcom->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
464 if (!qcom->dwc3)
465 return -ENOMEM;
466
467 qcom->dwc3->dev.parent = dev;
468 qcom->dwc3->dev.type = dev->type;
469 qcom->dwc3->dev.dma_mask = dev->dma_mask;
470 qcom->dwc3->dev.dma_parms = dev->dma_parms;
471 qcom->dwc3->dev.coherent_dma_mask = dev->coherent_dma_mask;
472
473 child_res = kcalloc(2, sizeof(*child_res), GFP_KERNEL);
474 if (!child_res)
475 return -ENOMEM;
476
477 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
478 if (!res) {
479 dev_err(&pdev->dev, "failed to get memory resource\n");
480 ret = -ENODEV;
481 goto out;
482 }
483
484 child_res[0].flags = res->flags;
485 child_res[0].start = res->start;
486 child_res[0].end = child_res[0].start +
487 qcom->acpi_pdata->dwc3_core_base_size;
488
489 irq = platform_get_irq(pdev, 0);
490 child_res[1].flags = IORESOURCE_IRQ;
491 child_res[1].start = child_res[1].end = irq;
492
493 ret = platform_device_add_resources(qcom->dwc3, child_res, 2);
494 if (ret) {
495 dev_err(&pdev->dev, "failed to add resources\n");
496 goto out;
497 }
498
499 ret = platform_device_add_properties(qcom->dwc3,
500 dwc3_qcom_acpi_properties);
501 if (ret < 0) {
502 dev_err(&pdev->dev, "failed to add properties\n");
503 goto out;
504 }
505
506 ret = platform_device_add(qcom->dwc3);
507 if (ret)
508 dev_err(&pdev->dev, "failed to add device\n");
509
510 out:
511 kfree(child_res);
512 return ret;
513 }
514
515 static int dwc3_qcom_of_register_core(struct platform_device *pdev)
516 {
517 struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
518 struct device_node *np = pdev->dev.of_node, *dwc3_np;
519 struct device *dev = &pdev->dev;
520 int ret;
521
522 dwc3_np = of_get_child_by_name(np, "dwc3");
523 if (!dwc3_np) {
524 dev_err(dev, "failed to find dwc3 core child\n");
525 return -ENODEV;
526 }
527
528 ret = of_platform_populate(np, NULL, NULL, dev);
529 if (ret) {
530 dev_err(dev, "failed to register dwc3 core - %d\n", ret);
531 return ret;
532 }
533
534 qcom->dwc3 = of_find_device_by_node(dwc3_np);
535 if (!qcom->dwc3) {
536 dev_err(dev, "failed to get dwc3 platform device\n");
537 return -ENODEV;
538 }
539
540 return 0;
541 }
542
543 static const struct dwc3_acpi_pdata sdm845_acpi_pdata = {
544 .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET,
545 .qscratch_base_size = SDM845_QSCRATCH_SIZE,
546 .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE,
547 .hs_phy_irq_index = 1,
548 .dp_hs_phy_irq_index = 4,
549 .dm_hs_phy_irq_index = 3,
550 .ss_phy_irq_index = 2
551 };
552
553 static int dwc3_qcom_probe(struct platform_device *pdev)
554 {
555 struct device_node *np = pdev->dev.of_node;
556 struct device *dev = &pdev->dev;
557 struct dwc3_qcom *qcom;
558 struct resource *res, *parent_res = NULL;
559 int ret, i;
560 bool ignore_pipe_clk;
561
562 qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL);
563 if (!qcom)
564 return -ENOMEM;
565
566 platform_set_drvdata(pdev, qcom);
567 qcom->dev = &pdev->dev;
568
569 if (has_acpi_companion(dev)) {
570 qcom->acpi_pdata = acpi_device_get_match_data(dev);
571 if (!qcom->acpi_pdata) {
572 dev_err(&pdev->dev, "no supporting ACPI device data\n");
573 return -EINVAL;
574 }
575 }
576
577 qcom->resets = devm_reset_control_array_get_optional_exclusive(dev);
578 if (IS_ERR(qcom->resets)) {
579 ret = PTR_ERR(qcom->resets);
580 dev_err(&pdev->dev, "failed to get resets, err=%d\n", ret);
581 return ret;
582 }
583
584 ret = reset_control_assert(qcom->resets);
585 if (ret) {
586 dev_err(&pdev->dev, "failed to assert resets, err=%d\n", ret);
587 return ret;
588 }
589
590 usleep_range(10, 1000);
591
592 ret = reset_control_deassert(qcom->resets);
593 if (ret) {
594 dev_err(&pdev->dev, "failed to deassert resets, err=%d\n", ret);
595 goto reset_assert;
596 }
597
598 ret = dwc3_qcom_clk_init(qcom, of_clk_get_parent_count(np));
599 if (ret) {
600 dev_err(dev, "failed to get clocks\n");
601 goto reset_assert;
602 }
603
604 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
605
606 if (np) {
607 parent_res = res;
608 } else {
609 parent_res = kmemdup(res, sizeof(struct resource), GFP_KERNEL);
610 if (!parent_res)
611 return -ENOMEM;
612
613 parent_res->start = res->start +
614 qcom->acpi_pdata->qscratch_base_offset;
615 parent_res->end = parent_res->start +
616 qcom->acpi_pdata->qscratch_base_size;
617 }
618
619 qcom->qscratch_base = devm_ioremap_resource(dev, parent_res);
620 if (IS_ERR(qcom->qscratch_base)) {
621 dev_err(dev, "failed to map qscratch, err=%d\n", ret);
622 ret = PTR_ERR(qcom->qscratch_base);
623 goto clk_disable;
624 }
625
626 ret = dwc3_qcom_setup_irq(pdev);
627 if (ret) {
628 dev_err(dev, "failed to setup IRQs, err=%d\n", ret);
629 goto clk_disable;
630 }
631
632 /*
633 * Disable pipe_clk requirement if specified. Used when dwc3
634 * operates without SSPHY and only HS/FS/LS modes are supported.
635 */
636 ignore_pipe_clk = device_property_read_bool(dev,
637 "qcom,select-utmi-as-pipe-clk");
638 if (ignore_pipe_clk)
639 dwc3_qcom_select_utmi_clk(qcom);
640
641 if (np)
642 ret = dwc3_qcom_of_register_core(pdev);
643 else
644 ret = dwc3_qcom_acpi_register_core(pdev);
645
646 if (ret) {
647 dev_err(dev, "failed to register DWC3 Core, err=%d\n", ret);
648 goto depopulate;
649 }
650
651 qcom->mode = usb_get_dr_mode(&qcom->dwc3->dev);
652
653 /* enable vbus override for device mode */
654 if (qcom->mode == USB_DR_MODE_PERIPHERAL)
655 dwc3_qcom_vbus_overrride_enable(qcom, true);
656
657 /* register extcon to override sw_vbus on Vbus change later */
658 ret = dwc3_qcom_register_extcon(qcom);
659 if (ret)
660 goto depopulate;
661
662 device_init_wakeup(&pdev->dev, 1);
663 qcom->is_suspended = false;
664 pm_runtime_set_active(dev);
665 pm_runtime_enable(dev);
666 pm_runtime_forbid(dev);
667
668 return 0;
669
670 depopulate:
671 if (np)
672 of_platform_depopulate(&pdev->dev);
673 else
674 platform_device_put(pdev);
675 clk_disable:
676 for (i = qcom->num_clocks - 1; i >= 0; i--) {
677 clk_disable_unprepare(qcom->clks[i]);
678 clk_put(qcom->clks[i]);
679 }
680 reset_assert:
681 reset_control_assert(qcom->resets);
682
683 return ret;
684 }
685
686 static int dwc3_qcom_remove(struct platform_device *pdev)
687 {
688 struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
689 struct device *dev = &pdev->dev;
690 int i;
691
692 of_platform_depopulate(dev);
693
694 for (i = qcom->num_clocks - 1; i >= 0; i--) {
695 clk_disable_unprepare(qcom->clks[i]);
696 clk_put(qcom->clks[i]);
697 }
698 qcom->num_clocks = 0;
699
700 reset_control_assert(qcom->resets);
701
702 pm_runtime_allow(dev);
703 pm_runtime_disable(dev);
704
705 return 0;
706 }
707
708 static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev)
709 {
710 struct dwc3_qcom *qcom = dev_get_drvdata(dev);
711 int ret = 0;
712
713 ret = dwc3_qcom_suspend(qcom);
714 if (!ret)
715 qcom->pm_suspended = true;
716
717 return ret;
718 }
719
720 static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev)
721 {
722 struct dwc3_qcom *qcom = dev_get_drvdata(dev);
723 int ret;
724
725 ret = dwc3_qcom_resume(qcom);
726 if (!ret)
727 qcom->pm_suspended = false;
728
729 return ret;
730 }
731
732 static int __maybe_unused dwc3_qcom_runtime_suspend(struct device *dev)
733 {
734 struct dwc3_qcom *qcom = dev_get_drvdata(dev);
735
736 return dwc3_qcom_suspend(qcom);
737 }
738
739 static int __maybe_unused dwc3_qcom_runtime_resume(struct device *dev)
740 {
741 struct dwc3_qcom *qcom = dev_get_drvdata(dev);
742
743 return dwc3_qcom_resume(qcom);
744 }
745
746 static const struct dev_pm_ops dwc3_qcom_dev_pm_ops = {
747 SET_SYSTEM_SLEEP_PM_OPS(dwc3_qcom_pm_suspend, dwc3_qcom_pm_resume)
748 SET_RUNTIME_PM_OPS(dwc3_qcom_runtime_suspend, dwc3_qcom_runtime_resume,
749 NULL)
750 };
751
752 static const struct of_device_id dwc3_qcom_of_match[] = {
753 { .compatible = "qcom,dwc3" },
754 { .compatible = "qcom,msm8996-dwc3" },
755 { .compatible = "qcom,msm8998-dwc3" },
756 { .compatible = "qcom,sdm845-dwc3" },
757 { }
758 };
759 MODULE_DEVICE_TABLE(of, dwc3_qcom_of_match);
760
761 static const struct acpi_device_id dwc3_qcom_acpi_match[] = {
762 { "QCOM2430", (unsigned long)&sdm845_acpi_pdata },
763 { },
764 };
765 MODULE_DEVICE_TABLE(acpi, dwc3_qcom_acpi_match);
766
767 static struct platform_driver dwc3_qcom_driver = {
768 .probe = dwc3_qcom_probe,
769 .remove = dwc3_qcom_remove,
770 .driver = {
771 .name = "dwc3-qcom",
772 .pm = &dwc3_qcom_dev_pm_ops,
773 .of_match_table = dwc3_qcom_of_match,
774 .acpi_match_table = ACPI_PTR(dwc3_qcom_acpi_match),
775 },
776 };
777
778 module_platform_driver(dwc3_qcom_driver);
779
780 MODULE_LICENSE("GPL v2");
781 MODULE_DESCRIPTION("DesignWare DWC3 QCOM Glue Driver");
Linux with added FPC-III support