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Merge remote-tracking branches 'regulator/fix/axp20x', 'regulator/fix/da9063', 'regul...
[deliverable/linux.git] / drivers / usb / dwc3 / dwc3-omap.c
1 /**
2 * dwc3-omap.c - OMAP Specific Glue layer
3 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
5 *
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 of
11 * the License as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/slab.h>
22 #include <linux/interrupt.h>
23 #include <linux/platform_device.h>
24 #include <linux/platform_data/dwc3-omap.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/ioport.h>
28 #include <linux/io.h>
29 #include <linux/of.h>
30 #include <linux/of_platform.h>
31 #include <linux/extcon.h>
32 #include <linux/regulator/consumer.h>
33
34 #include <linux/usb/otg.h>
35
36 /*
37 * All these registers belong to OMAP's Wrapper around the
38 * DesignWare USB3 Core.
39 */
40
41 #define USBOTGSS_REVISION 0x0000
42 #define USBOTGSS_SYSCONFIG 0x0010
43 #define USBOTGSS_IRQ_EOI 0x0020
44 #define USBOTGSS_EOI_OFFSET 0x0008
45 #define USBOTGSS_IRQSTATUS_RAW_0 0x0024
46 #define USBOTGSS_IRQSTATUS_0 0x0028
47 #define USBOTGSS_IRQENABLE_SET_0 0x002c
48 #define USBOTGSS_IRQENABLE_CLR_0 0x0030
49 #define USBOTGSS_IRQ0_OFFSET 0x0004
50 #define USBOTGSS_IRQSTATUS_RAW_1 0x0030
51 #define USBOTGSS_IRQSTATUS_1 0x0034
52 #define USBOTGSS_IRQENABLE_SET_1 0x0038
53 #define USBOTGSS_IRQENABLE_CLR_1 0x003c
54 #define USBOTGSS_IRQSTATUS_RAW_2 0x0040
55 #define USBOTGSS_IRQSTATUS_2 0x0044
56 #define USBOTGSS_IRQENABLE_SET_2 0x0048
57 #define USBOTGSS_IRQENABLE_CLR_2 0x004c
58 #define USBOTGSS_IRQSTATUS_RAW_3 0x0050
59 #define USBOTGSS_IRQSTATUS_3 0x0054
60 #define USBOTGSS_IRQENABLE_SET_3 0x0058
61 #define USBOTGSS_IRQENABLE_CLR_3 0x005c
62 #define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030
63 #define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034
64 #define USBOTGSS_IRQSTATUS_MISC 0x0038
65 #define USBOTGSS_IRQENABLE_SET_MISC 0x003c
66 #define USBOTGSS_IRQENABLE_CLR_MISC 0x0040
67 #define USBOTGSS_IRQMISC_OFFSET 0x03fc
68 #define USBOTGSS_UTMI_OTG_STATUS 0x0080
69 #define USBOTGSS_UTMI_OTG_CTRL 0x0084
70 #define USBOTGSS_UTMI_OTG_OFFSET 0x0480
71 #define USBOTGSS_TXFIFO_DEPTH 0x0508
72 #define USBOTGSS_RXFIFO_DEPTH 0x050c
73 #define USBOTGSS_MMRAM_OFFSET 0x0100
74 #define USBOTGSS_FLADJ 0x0104
75 #define USBOTGSS_DEBUG_CFG 0x0108
76 #define USBOTGSS_DEBUG_DATA 0x010c
77 #define USBOTGSS_DEV_EBC_EN 0x0110
78 #define USBOTGSS_DEBUG_OFFSET 0x0600
79
80 /* SYSCONFIG REGISTER */
81 #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16)
82
83 /* IRQ_EOI REGISTER */
84 #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0)
85
86 /* IRQS0 BITS */
87 #define USBOTGSS_IRQO_COREIRQ_ST (1 << 0)
88
89 /* IRQMISC BITS */
90 #define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17)
91 #define USBOTGSS_IRQMISC_OEVT (1 << 16)
92 #define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13)
93 #define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12)
94 #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11)
95 #define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8)
96 #define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5)
97 #define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4)
98 #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3)
99 #define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0)
100
101 /* UTMI_OTG_STATUS REGISTER */
102 #define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS (1 << 5)
103 #define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS (1 << 4)
104 #define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS (1 << 3)
105 #define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP (1 << 0)
106
107 /* UTMI_OTG_CTRL REGISTER */
108 #define USBOTGSS_UTMI_OTG_CTRL_SW_MODE (1 << 31)
109 #define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT (1 << 9)
110 #define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE (1 << 8)
111 #define USBOTGSS_UTMI_OTG_CTRL_IDDIG (1 << 4)
112 #define USBOTGSS_UTMI_OTG_CTRL_SESSEND (1 << 3)
113 #define USBOTGSS_UTMI_OTG_CTRL_SESSVALID (1 << 2)
114 #define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID (1 << 1)
115
116 struct dwc3_omap {
117 struct device *dev;
118
119 int irq;
120 void __iomem *base;
121
122 u32 utmi_otg_ctrl;
123 u32 utmi_otg_offset;
124 u32 irqmisc_offset;
125 u32 irq_eoi_offset;
126 u32 debug_offset;
127 u32 irq0_offset;
128
129 u32 dma_status:1;
130
131 struct extcon_dev *edev;
132 struct notifier_block vbus_nb;
133 struct notifier_block id_nb;
134
135 struct regulator *vbus_reg;
136 };
137
138 enum omap_dwc3_vbus_id_status {
139 OMAP_DWC3_ID_FLOAT,
140 OMAP_DWC3_ID_GROUND,
141 OMAP_DWC3_VBUS_OFF,
142 OMAP_DWC3_VBUS_VALID,
143 };
144
145 static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
146 {
147 return readl(base + offset);
148 }
149
150 static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
151 {
152 writel(value, base + offset);
153 }
154
155 static u32 dwc3_omap_read_utmi_ctrl(struct dwc3_omap *omap)
156 {
157 return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_CTRL +
158 omap->utmi_otg_offset);
159 }
160
161 static void dwc3_omap_write_utmi_ctrl(struct dwc3_omap *omap, u32 value)
162 {
163 dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_CTRL +
164 omap->utmi_otg_offset, value);
165
166 }
167
168 static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap)
169 {
170 return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0 -
171 omap->irq0_offset);
172 }
173
174 static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value)
175 {
176 dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 -
177 omap->irq0_offset, value);
178
179 }
180
181 static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap)
182 {
183 return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_MISC +
184 omap->irqmisc_offset);
185 }
186
187 static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value)
188 {
189 dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC +
190 omap->irqmisc_offset, value);
191
192 }
193
194 static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value)
195 {
196 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC +
197 omap->irqmisc_offset, value);
198
199 }
200
201 static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value)
202 {
203 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 -
204 omap->irq0_offset, value);
205 }
206
207 static void dwc3_omap_write_irqmisc_clr(struct dwc3_omap *omap, u32 value)
208 {
209 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC +
210 omap->irqmisc_offset, value);
211 }
212
213 static void dwc3_omap_write_irq0_clr(struct dwc3_omap *omap, u32 value)
214 {
215 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 -
216 omap->irq0_offset, value);
217 }
218
219 static void dwc3_omap_set_mailbox(struct dwc3_omap *omap,
220 enum omap_dwc3_vbus_id_status status)
221 {
222 int ret;
223 u32 val;
224
225 switch (status) {
226 case OMAP_DWC3_ID_GROUND:
227 if (omap->vbus_reg) {
228 ret = regulator_enable(omap->vbus_reg);
229 if (ret) {
230 dev_err(omap->dev, "regulator enable failed\n");
231 return;
232 }
233 }
234
235 val = dwc3_omap_read_utmi_ctrl(omap);
236 val &= ~(USBOTGSS_UTMI_OTG_CTRL_IDDIG
237 | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID
238 | USBOTGSS_UTMI_OTG_CTRL_SESSEND);
239 val |= USBOTGSS_UTMI_OTG_CTRL_SESSVALID
240 | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT;
241 dwc3_omap_write_utmi_ctrl(omap, val);
242 break;
243
244 case OMAP_DWC3_VBUS_VALID:
245 val = dwc3_omap_read_utmi_ctrl(omap);
246 val &= ~USBOTGSS_UTMI_OTG_CTRL_SESSEND;
247 val |= USBOTGSS_UTMI_OTG_CTRL_IDDIG
248 | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID
249 | USBOTGSS_UTMI_OTG_CTRL_SESSVALID
250 | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT;
251 dwc3_omap_write_utmi_ctrl(omap, val);
252 break;
253
254 case OMAP_DWC3_ID_FLOAT:
255 if (omap->vbus_reg)
256 regulator_disable(omap->vbus_reg);
257
258 case OMAP_DWC3_VBUS_OFF:
259 val = dwc3_omap_read_utmi_ctrl(omap);
260 val &= ~(USBOTGSS_UTMI_OTG_CTRL_SESSVALID
261 | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID
262 | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT);
263 val |= USBOTGSS_UTMI_OTG_CTRL_SESSEND
264 | USBOTGSS_UTMI_OTG_CTRL_IDDIG;
265 dwc3_omap_write_utmi_ctrl(omap, val);
266 break;
267
268 default:
269 dev_WARN(omap->dev, "invalid state\n");
270 }
271 }
272
273 static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
274 {
275 struct dwc3_omap *omap = _omap;
276 u32 reg;
277
278 reg = dwc3_omap_read_irqmisc_status(omap);
279
280 if (reg & USBOTGSS_IRQMISC_DMADISABLECLR)
281 omap->dma_status = false;
282
283 dwc3_omap_write_irqmisc_status(omap, reg);
284
285 reg = dwc3_omap_read_irq0_status(omap);
286
287 dwc3_omap_write_irq0_status(omap, reg);
288
289 return IRQ_HANDLED;
290 }
291
292 static void dwc3_omap_enable_irqs(struct dwc3_omap *omap)
293 {
294 u32 reg;
295
296 /* enable all IRQs */
297 reg = USBOTGSS_IRQO_COREIRQ_ST;
298 dwc3_omap_write_irq0_set(omap, reg);
299
300 reg = (USBOTGSS_IRQMISC_OEVT |
301 USBOTGSS_IRQMISC_DRVVBUS_RISE |
302 USBOTGSS_IRQMISC_CHRGVBUS_RISE |
303 USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
304 USBOTGSS_IRQMISC_IDPULLUP_RISE |
305 USBOTGSS_IRQMISC_DRVVBUS_FALL |
306 USBOTGSS_IRQMISC_CHRGVBUS_FALL |
307 USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
308 USBOTGSS_IRQMISC_IDPULLUP_FALL);
309
310 dwc3_omap_write_irqmisc_set(omap, reg);
311 }
312
313 static void dwc3_omap_disable_irqs(struct dwc3_omap *omap)
314 {
315 u32 reg;
316
317 /* disable all IRQs */
318 reg = USBOTGSS_IRQO_COREIRQ_ST;
319 dwc3_omap_write_irq0_clr(omap, reg);
320
321 reg = (USBOTGSS_IRQMISC_OEVT |
322 USBOTGSS_IRQMISC_DRVVBUS_RISE |
323 USBOTGSS_IRQMISC_CHRGVBUS_RISE |
324 USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
325 USBOTGSS_IRQMISC_IDPULLUP_RISE |
326 USBOTGSS_IRQMISC_DRVVBUS_FALL |
327 USBOTGSS_IRQMISC_CHRGVBUS_FALL |
328 USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
329 USBOTGSS_IRQMISC_IDPULLUP_FALL);
330
331 dwc3_omap_write_irqmisc_clr(omap, reg);
332 }
333
334 static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32);
335
336 static int dwc3_omap_id_notifier(struct notifier_block *nb,
337 unsigned long event, void *ptr)
338 {
339 struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb);
340
341 if (event)
342 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
343 else
344 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT);
345
346 return NOTIFY_DONE;
347 }
348
349 static int dwc3_omap_vbus_notifier(struct notifier_block *nb,
350 unsigned long event, void *ptr)
351 {
352 struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb);
353
354 if (event)
355 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
356 else
357 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF);
358
359 return NOTIFY_DONE;
360 }
361
362 static void dwc3_omap_map_offset(struct dwc3_omap *omap)
363 {
364 struct device_node *node = omap->dev->of_node;
365
366 /*
367 * Differentiate between OMAP5 and AM437x.
368 *
369 * For OMAP5(ES2.0) and AM437x wrapper revision is same, even
370 * though there are changes in wrapper register offsets.
371 *
372 * Using dt compatible to differentiate AM437x.
373 */
374 if (of_device_is_compatible(node, "ti,am437x-dwc3")) {
375 omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
376 omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
377 omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
378 omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
379 omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
380 }
381 }
382
383 static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap)
384 {
385 u32 reg;
386 struct device_node *node = omap->dev->of_node;
387 int utmi_mode = 0;
388
389 reg = dwc3_omap_read_utmi_ctrl(omap);
390
391 of_property_read_u32(node, "utmi-mode", &utmi_mode);
392
393 switch (utmi_mode) {
394 case DWC3_OMAP_UTMI_MODE_SW:
395 reg |= USBOTGSS_UTMI_OTG_CTRL_SW_MODE;
396 break;
397 case DWC3_OMAP_UTMI_MODE_HW:
398 reg &= ~USBOTGSS_UTMI_OTG_CTRL_SW_MODE;
399 break;
400 default:
401 dev_WARN(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);
402 }
403
404 dwc3_omap_write_utmi_ctrl(omap, reg);
405 }
406
407 static int dwc3_omap_extcon_register(struct dwc3_omap *omap)
408 {
409 int ret;
410 struct device_node *node = omap->dev->of_node;
411 struct extcon_dev *edev;
412
413 if (of_property_read_bool(node, "extcon")) {
414 edev = extcon_get_edev_by_phandle(omap->dev, 0);
415 if (IS_ERR(edev)) {
416 dev_vdbg(omap->dev, "couldn't get extcon device\n");
417 return -EPROBE_DEFER;
418 }
419
420 omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;
421 ret = extcon_register_notifier(edev, EXTCON_USB,
422 &omap->vbus_nb);
423 if (ret < 0)
424 dev_vdbg(omap->dev, "failed to register notifier for USB\n");
425
426 omap->id_nb.notifier_call = dwc3_omap_id_notifier;
427 ret = extcon_register_notifier(edev, EXTCON_USB_HOST,
428 &omap->id_nb);
429 if (ret < 0)
430 dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n");
431
432 if (extcon_get_cable_state_(edev, EXTCON_USB) == true)
433 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
434 if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) == true)
435 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
436
437 omap->edev = edev;
438 }
439
440 return 0;
441 }
442
443 static int dwc3_omap_probe(struct platform_device *pdev)
444 {
445 struct device_node *node = pdev->dev.of_node;
446
447 struct dwc3_omap *omap;
448 struct resource *res;
449 struct device *dev = &pdev->dev;
450 struct regulator *vbus_reg = NULL;
451
452 int ret;
453 int irq;
454
455 u32 reg;
456
457 void __iomem *base;
458
459 if (!node) {
460 dev_err(dev, "device node not found\n");
461 return -EINVAL;
462 }
463
464 omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
465 if (!omap)
466 return -ENOMEM;
467
468 platform_set_drvdata(pdev, omap);
469
470 irq = platform_get_irq(pdev, 0);
471 if (irq < 0) {
472 dev_err(dev, "missing IRQ resource\n");
473 return -EINVAL;
474 }
475
476 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
477 base = devm_ioremap_resource(dev, res);
478 if (IS_ERR(base))
479 return PTR_ERR(base);
480
481 if (of_property_read_bool(node, "vbus-supply")) {
482 vbus_reg = devm_regulator_get(dev, "vbus");
483 if (IS_ERR(vbus_reg)) {
484 dev_err(dev, "vbus init failed\n");
485 return PTR_ERR(vbus_reg);
486 }
487 }
488
489 omap->dev = dev;
490 omap->irq = irq;
491 omap->base = base;
492 omap->vbus_reg = vbus_reg;
493 dev->dma_mask = &dwc3_omap_dma_mask;
494
495 pm_runtime_enable(dev);
496 ret = pm_runtime_get_sync(dev);
497 if (ret < 0) {
498 dev_err(dev, "get_sync failed with err %d\n", ret);
499 goto err1;
500 }
501
502 dwc3_omap_map_offset(omap);
503 dwc3_omap_set_utmi_mode(omap);
504
505 /* check the DMA Status */
506 reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
507 omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);
508
509 ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0,
510 "dwc3-omap", omap);
511 if (ret) {
512 dev_err(dev, "failed to request IRQ #%d --> %d\n",
513 omap->irq, ret);
514 goto err1;
515 }
516
517 ret = dwc3_omap_extcon_register(omap);
518 if (ret < 0)
519 goto err1;
520
521 ret = of_platform_populate(node, NULL, NULL, dev);
522 if (ret) {
523 dev_err(&pdev->dev, "failed to create dwc3 core\n");
524 goto err2;
525 }
526
527 dwc3_omap_enable_irqs(omap);
528
529 return 0;
530
531 err2:
532 extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb);
533 extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb);
534
535 err1:
536 pm_runtime_put_sync(dev);
537 pm_runtime_disable(dev);
538
539 return ret;
540 }
541
542 static int dwc3_omap_remove(struct platform_device *pdev)
543 {
544 struct dwc3_omap *omap = platform_get_drvdata(pdev);
545
546 extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb);
547 extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb);
548 dwc3_omap_disable_irqs(omap);
549 of_platform_depopulate(omap->dev);
550 pm_runtime_put_sync(&pdev->dev);
551 pm_runtime_disable(&pdev->dev);
552
553 return 0;
554 }
555
556 static const struct of_device_id of_dwc3_match[] = {
557 {
558 .compatible = "ti,dwc3"
559 },
560 {
561 .compatible = "ti,am437x-dwc3"
562 },
563 { },
564 };
565 MODULE_DEVICE_TABLE(of, of_dwc3_match);
566
567 #ifdef CONFIG_PM_SLEEP
568 static int dwc3_omap_suspend(struct device *dev)
569 {
570 struct dwc3_omap *omap = dev_get_drvdata(dev);
571
572 omap->utmi_otg_ctrl = dwc3_omap_read_utmi_ctrl(omap);
573 dwc3_omap_disable_irqs(omap);
574
575 return 0;
576 }
577
578 static int dwc3_omap_resume(struct device *dev)
579 {
580 struct dwc3_omap *omap = dev_get_drvdata(dev);
581
582 dwc3_omap_write_utmi_ctrl(omap, omap->utmi_otg_ctrl);
583 dwc3_omap_enable_irqs(omap);
584
585 pm_runtime_disable(dev);
586 pm_runtime_set_active(dev);
587 pm_runtime_enable(dev);
588
589 return 0;
590 }
591
592 static const struct dev_pm_ops dwc3_omap_dev_pm_ops = {
593
594 SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume)
595 };
596
597 #define DEV_PM_OPS (&dwc3_omap_dev_pm_ops)
598 #else
599 #define DEV_PM_OPS NULL
600 #endif /* CONFIG_PM_SLEEP */
601
602 static struct platform_driver dwc3_omap_driver = {
603 .probe = dwc3_omap_probe,
604 .remove = dwc3_omap_remove,
605 .driver = {
606 .name = "omap-dwc3",
607 .of_match_table = of_dwc3_match,
608 .pm = DEV_PM_OPS,
609 },
610 };
611
612 module_platform_driver(dwc3_omap_driver);
613
614 MODULE_ALIAS("platform:omap-dwc3");
615 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
616 MODULE_LICENSE("GPL v2");
617 MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");
Linux kernel - Deliverables
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