1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24#include <linux/clk.h>
25#include <linux/delay.h>
26#include <linux/err.h>
27#include <linux/extcon-provider.h>
28#include <linux/io.h>
29#include <linux/interrupt.h>
30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/mutex.h>
33#include <linux/of.h>
34#include <linux/of_address.h>
35#include <linux/of_device.h>
36#include <linux/of_gpio.h>
37#include <linux/phy/phy.h>
38#include <linux/phy/phy-sun4i-usb.h>
39#include <linux/platform_device.h>
40#include <linux/power_supply.h>
41#include <linux/regulator/consumer.h>
42#include <linux/reset.h>
43#include <linux/spinlock.h>
44#include <linux/usb/of.h>
45#include <linux/workqueue.h>
46
47#define REG_ISCR 0x00
48#define REG_PHYCTL_A10 0x04
49#define REG_PHYBIST 0x08
50#define REG_PHYTUNE 0x0c
51#define REG_PHYCTL_A33 0x10
52#define REG_PHY_OTGCTL 0x20
53
54#define REG_PMU_UNK1 0x10
55
56#define PHYCTL_DATA BIT(7)
57
58#define OTGCTL_ROUTE_MUSB BIT(0)
59
60#define SUNXI_AHB_ICHR8_EN BIT(10)
61#define SUNXI_AHB_INCR4_BURST_EN BIT(9)
62#define SUNXI_AHB_INCRX_ALIGN_EN BIT(8)
63#define SUNXI_ULPI_BYPASS_EN BIT(0)
64
65
66#define ISCR_ID_PULLUP_EN (1 << 17)
67#define ISCR_DPDM_PULLUP_EN (1 << 16)
68
69#define ISCR_FORCE_ID_MASK (3 << 14)
70#define ISCR_FORCE_ID_LOW (2 << 14)
71#define ISCR_FORCE_ID_HIGH (3 << 14)
72#define ISCR_FORCE_VBUS_MASK (3 << 12)
73#define ISCR_FORCE_VBUS_LOW (2 << 12)
74#define ISCR_FORCE_VBUS_HIGH (3 << 12)
75
76
77#define PHY_PLL_BW 0x03
78#define PHY_RES45_CAL_EN 0x0c
79
80
81#define PHY_TX_AMPLITUDE_TUNE 0x20
82#define PHY_TX_SLEWRATE_TUNE 0x22
83#define PHY_VBUSVALID_TH_SEL 0x25
84#define PHY_PULLUP_RES_SEL 0x27
85#define PHY_OTG_FUNC_EN 0x28
86#define PHY_VBUS_DET_EN 0x29
87#define PHY_DISCON_TH_SEL 0x2a
88#define PHY_SQUELCH_DETECT 0x3c
89
90
91#define PHY_CTL_VBUSVLDEXT BIT(5)
92#define PHY_CTL_SIDDQ BIT(3)
93
94
95#define SUNXI_EHCI_HS_FORCE BIT(20)
96#define SUNXI_HSIC_CONNECT_DET BIT(17)
97#define SUNXI_HSIC_CONNECT_INT BIT(16)
98#define SUNXI_HSIC BIT(1)
99
100#define MAX_PHYS 4
101
102
103
104
105
106#define DEBOUNCE_TIME msecs_to_jiffies(50)
107#define POLL_TIME msecs_to_jiffies(250)
108
109enum sun4i_usb_phy_type {
110 sun4i_a10_phy,
111 sun6i_a31_phy,
112 sun8i_a33_phy,
113 sun8i_a83t_phy,
114 sun8i_h3_phy,
115 sun8i_r40_phy,
116 sun8i_v3s_phy,
117 sun50i_a64_phy,
118 sun50i_h6_phy,
119};
120
121struct sun4i_usb_phy_cfg {
122 int num_phys;
123 int hsic_index;
124 enum sun4i_usb_phy_type type;
125 u32 disc_thresh;
126 u8 phyctl_offset;
127 bool dedicated_clocks;
128 bool enable_pmu_unk1;
129 bool phy0_dual_route;
130 int missing_phys;
131};
132
133struct sun4i_usb_phy_data {
134 void __iomem *base;
135 const struct sun4i_usb_phy_cfg *cfg;
136 enum usb_dr_mode dr_mode;
137 spinlock_t reg_lock;
138 struct sun4i_usb_phy {
139 struct phy *phy;
140 void __iomem *pmu;
141 struct regulator *vbus;
142 struct reset_control *reset;
143 struct clk *clk;
144 struct clk *clk2;
145 bool regulator_on;
146 int index;
147 } phys[MAX_PHYS];
148
149 struct extcon_dev *extcon;
150 bool phy0_init;
151 struct gpio_desc *id_det_gpio;
152 struct gpio_desc *vbus_det_gpio;
153 struct power_supply *vbus_power_supply;
154 struct notifier_block vbus_power_nb;
155 bool vbus_power_nb_registered;
156 bool force_session_end;
157 int id_det_irq;
158 int vbus_det_irq;
159 int id_det;
160 int vbus_det;
161 struct delayed_work detect;
162};
163
164#define to_sun4i_usb_phy_data(phy) \
165 container_of((phy), struct sun4i_usb_phy_data, phys[(phy)->index])
166
167static void sun4i_usb_phy0_update_iscr(struct phy *_phy, u32 clr, u32 set)
168{
169 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
170 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
171 u32 iscr;
172
173 iscr = readl(data->base + REG_ISCR);
174 iscr &= ~clr;
175 iscr |= set;
176 writel(iscr, data->base + REG_ISCR);
177}
178
179static void sun4i_usb_phy0_set_id_detect(struct phy *phy, u32 val)
180{
181 if (val)
182 val = ISCR_FORCE_ID_HIGH;
183 else
184 val = ISCR_FORCE_ID_LOW;
185
186 sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_ID_MASK, val);
187}
188
189static void sun4i_usb_phy0_set_vbus_detect(struct phy *phy, u32 val)
190{
191 if (val)
192 val = ISCR_FORCE_VBUS_HIGH;
193 else
194 val = ISCR_FORCE_VBUS_LOW;
195
196 sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_VBUS_MASK, val);
197}
198
199static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
200 int len)
201{
202 struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
203 u32 temp, usbc_bit = BIT(phy->index * 2);
204 void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
205 unsigned long flags;
206 int i;
207
208 spin_lock_irqsave(&phy_data->reg_lock, flags);
209
210 if (phy_data->cfg->phyctl_offset == REG_PHYCTL_A33) {
211
212 writel(0, phyctl);
213 }
214
215 for (i = 0; i < len; i++) {
216 temp = readl(phyctl);
217
218
219 temp &= ~(0xff << 8);
220
221
222 temp |= ((addr + i) << 8);
223 writel(temp, phyctl);
224
225
226 temp = readb(phyctl);
227 if (data & 0x1)
228 temp |= PHYCTL_DATA;
229 else
230 temp &= ~PHYCTL_DATA;
231 temp &= ~usbc_bit;
232 writeb(temp, phyctl);
233
234
235 temp = readb(phyctl);
236 temp |= usbc_bit;
237 writeb(temp, phyctl);
238
239 temp = readb(phyctl);
240 temp &= ~usbc_bit;
241 writeb(temp, phyctl);
242
243 data >>= 1;
244 }
245
246 spin_unlock_irqrestore(&phy_data->reg_lock, flags);
247}
248
249static void sun4i_usb_phy_passby(struct sun4i_usb_phy *phy, int enable)
250{
251 struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
252 u32 bits, reg_value;
253
254 if (!phy->pmu)
255 return;
256
257 bits = SUNXI_AHB_ICHR8_EN | SUNXI_AHB_INCR4_BURST_EN |
258 SUNXI_AHB_INCRX_ALIGN_EN | SUNXI_ULPI_BYPASS_EN;
259
260
261 if (phy_data->cfg->type == sun8i_a83t_phy && phy->index == 2)
262 bits |= SUNXI_EHCI_HS_FORCE | SUNXI_HSIC_CONNECT_INT |
263 SUNXI_HSIC;
264
265 reg_value = readl(phy->pmu);
266
267 if (enable)
268 reg_value |= bits;
269 else
270 reg_value &= ~bits;
271
272 writel(reg_value, phy->pmu);
273}
274
275static int sun4i_usb_phy_init(struct phy *_phy)
276{
277 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
278 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
279 int ret;
280 u32 val;
281
282 ret = clk_prepare_enable(phy->clk);
283 if (ret)
284 return ret;
285
286 ret = clk_prepare_enable(phy->clk2);
287 if (ret) {
288 clk_disable_unprepare(phy->clk);
289 return ret;
290 }
291
292 ret = reset_control_deassert(phy->reset);
293 if (ret) {
294 clk_disable_unprepare(phy->clk2);
295 clk_disable_unprepare(phy->clk);
296 return ret;
297 }
298
299 if (data->cfg->type == sun8i_a83t_phy ||
300 data->cfg->type == sun50i_h6_phy) {
301 if (phy->index == 0) {
302 val = readl(data->base + data->cfg->phyctl_offset);
303 val |= PHY_CTL_VBUSVLDEXT;
304 val &= ~PHY_CTL_SIDDQ;
305 writel(val, data->base + data->cfg->phyctl_offset);
306 }
307 } else {
308 if (phy->pmu && data->cfg->enable_pmu_unk1) {
309 val = readl(phy->pmu + REG_PMU_UNK1);
310 writel(val & ~2, phy->pmu + REG_PMU_UNK1);
311 }
312
313
314 if (phy->index == 0)
315 sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
316
317
318 sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
319
320
321 sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
322 data->cfg->disc_thresh, 2);
323 }
324
325 sun4i_usb_phy_passby(phy, 1);
326
327 if (phy->index == 0) {
328 data->phy0_init = true;
329
330
331 sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_DPDM_PULLUP_EN);
332 sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_ID_PULLUP_EN);
333
334
335 data->id_det = -1;
336 data->vbus_det = -1;
337 queue_delayed_work(system_wq, &data->detect, 0);
338 }
339
340 return 0;
341}
342
343static int sun4i_usb_phy_exit(struct phy *_phy)
344{
345 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
346 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
347
348 if (phy->index == 0) {
349 if (data->cfg->type == sun8i_a83t_phy ||
350 data->cfg->type == sun50i_h6_phy) {
351 void __iomem *phyctl = data->base +
352 data->cfg->phyctl_offset;
353
354 writel(readl(phyctl) | PHY_CTL_SIDDQ, phyctl);
355 }
356
357
358 sun4i_usb_phy0_update_iscr(_phy, ISCR_DPDM_PULLUP_EN, 0);
359 sun4i_usb_phy0_update_iscr(_phy, ISCR_ID_PULLUP_EN, 0);
360 data->phy0_init = false;
361 }
362
363 sun4i_usb_phy_passby(phy, 0);
364 reset_control_assert(phy->reset);
365 clk_disable_unprepare(phy->clk2);
366 clk_disable_unprepare(phy->clk);
367
368 return 0;
369}
370
371static int sun4i_usb_phy0_get_id_det(struct sun4i_usb_phy_data *data)
372{
373 switch (data->dr_mode) {
374 case USB_DR_MODE_OTG:
375 if (data->id_det_gpio)
376 return gpiod_get_value_cansleep(data->id_det_gpio);
377 else
378 return 1;
379 case USB_DR_MODE_HOST:
380 return 0;
381 case USB_DR_MODE_PERIPHERAL:
382 default:
383 return 1;
384 }
385}
386
387static int sun4i_usb_phy0_get_vbus_det(struct sun4i_usb_phy_data *data)
388{
389 if (data->vbus_det_gpio)
390 return gpiod_get_value_cansleep(data->vbus_det_gpio);
391
392 if (data->vbus_power_supply) {
393 union power_supply_propval val;
394 int r;
395
396 r = power_supply_get_property(data->vbus_power_supply,
397 POWER_SUPPLY_PROP_PRESENT, &val);
398 if (r == 0)
399 return val.intval;
400 }
401
402
403 return 1;
404}
405
406static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data)
407{
408 return data->vbus_det_gpio || data->vbus_power_supply;
409}
410
411static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data)
412{
413 if ((data->id_det_gpio && data->id_det_irq <= 0) ||
414 (data->vbus_det_gpio && data->vbus_det_irq <= 0))
415 return true;
416
417
418
419
420
421
422
423 if ((data->cfg->type == sun6i_a31_phy ||
424 data->cfg->type == sun8i_a33_phy) &&
425 data->vbus_power_supply && data->phys[0].regulator_on)
426 return true;
427
428 return false;
429}
430
431static int sun4i_usb_phy_power_on(struct phy *_phy)
432{
433 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
434 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
435 int ret;
436
437 if (!phy->vbus || phy->regulator_on)
438 return 0;
439
440
441 if (phy->index == 0 && sun4i_usb_phy0_have_vbus_det(data) &&
442 data->vbus_det) {
443 dev_warn(&_phy->dev, "External vbus detected, not enabling our own vbus\n");
444 return 0;
445 }
446
447 ret = regulator_enable(phy->vbus);
448 if (ret)
449 return ret;
450
451 phy->regulator_on = true;
452
453
454 if (phy->index == 0 && sun4i_usb_phy0_poll(data))
455 mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
456
457 return 0;
458}
459
460static int sun4i_usb_phy_power_off(struct phy *_phy)
461{
462 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
463 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
464
465 if (!phy->vbus || !phy->regulator_on)
466 return 0;
467
468 regulator_disable(phy->vbus);
469 phy->regulator_on = false;
470
471
472
473
474
475 if (phy->index == 0 && !sun4i_usb_phy0_poll(data))
476 mod_delayed_work(system_wq, &data->detect, POLL_TIME);
477
478 return 0;
479}
480
481static int sun4i_usb_phy_set_mode(struct phy *_phy,
482 enum phy_mode mode, int submode)
483{
484 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
485 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
486 int new_mode;
487
488 if (phy->index != 0) {
489 if (mode == PHY_MODE_USB_HOST)
490 return 0;
491 return -EINVAL;
492 }
493
494 switch (mode) {
495 case PHY_MODE_USB_HOST:
496 new_mode = USB_DR_MODE_HOST;
497 break;
498 case PHY_MODE_USB_DEVICE:
499 new_mode = USB_DR_MODE_PERIPHERAL;
500 break;
501 case PHY_MODE_USB_OTG:
502 new_mode = USB_DR_MODE_OTG;
503 break;
504 default:
505 return -EINVAL;
506 }
507
508 if (new_mode != data->dr_mode) {
509 dev_info(&_phy->dev, "Changing dr_mode to %d\n", new_mode);
510 data->dr_mode = new_mode;
511 }
512
513 data->id_det = -1;
514 data->force_session_end = true;
515 queue_delayed_work(system_wq, &data->detect, 0);
516
517 return 0;
518}
519
520void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled)
521{
522 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
523
524 sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2, 2);
525}
526EXPORT_SYMBOL_GPL(sun4i_usb_phy_set_squelch_detect);
527
528static const struct phy_ops sun4i_usb_phy_ops = {
529 .init = sun4i_usb_phy_init,
530 .exit = sun4i_usb_phy_exit,
531 .power_on = sun4i_usb_phy_power_on,
532 .power_off = sun4i_usb_phy_power_off,
533 .set_mode = sun4i_usb_phy_set_mode,
534 .owner = THIS_MODULE,
535};
536
537static void sun4i_usb_phy0_reroute(struct sun4i_usb_phy_data *data, int id_det)
538{
539 u32 regval;
540
541 regval = readl(data->base + REG_PHY_OTGCTL);
542 if (id_det == 0) {
543
544 regval &= ~OTGCTL_ROUTE_MUSB;
545 } else {
546
547 regval |= OTGCTL_ROUTE_MUSB;
548 }
549 writel(regval, data->base + REG_PHY_OTGCTL);
550}
551
552static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
553{
554 struct sun4i_usb_phy_data *data =
555 container_of(work, struct sun4i_usb_phy_data, detect.work);
556 struct phy *phy0 = data->phys[0].phy;
557 bool force_session_end, id_notify = false, vbus_notify = false;
558 int id_det, vbus_det;
559
560 if (phy0 == NULL)
561 return;
562
563 id_det = sun4i_usb_phy0_get_id_det(data);
564 vbus_det = sun4i_usb_phy0_get_vbus_det(data);
565
566 mutex_lock(&phy0->mutex);
567
568 if (!data->phy0_init) {
569 mutex_unlock(&phy0->mutex);
570 return;
571 }
572
573 force_session_end = data->force_session_end;
574 data->force_session_end = false;
575
576 if (id_det != data->id_det) {
577
578 if (data->dr_mode == USB_DR_MODE_OTG &&
579 !sun4i_usb_phy0_have_vbus_det(data))
580 force_session_end = true;
581
582
583 if (force_session_end && id_det == 0) {
584 sun4i_usb_phy0_set_vbus_detect(phy0, 0);
585 msleep(200);
586 sun4i_usb_phy0_set_vbus_detect(phy0, 1);
587 }
588 sun4i_usb_phy0_set_id_detect(phy0, id_det);
589 data->id_det = id_det;
590 id_notify = true;
591 }
592
593 if (vbus_det != data->vbus_det) {
594 sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det);
595 data->vbus_det = vbus_det;
596 vbus_notify = true;
597 }
598
599 mutex_unlock(&phy0->mutex);
600
601 if (id_notify) {
602 extcon_set_state_sync(data->extcon, EXTCON_USB_HOST,
603 !id_det);
604
605 if (force_session_end && id_det == 1) {
606 mutex_lock(&phy0->mutex);
607 sun4i_usb_phy0_set_vbus_detect(phy0, 0);
608 msleep(1000);
609 sun4i_usb_phy0_set_vbus_detect(phy0, 1);
610 mutex_unlock(&phy0->mutex);
611 }
612
613
614 if (data->cfg->phy0_dual_route)
615 sun4i_usb_phy0_reroute(data, id_det);
616 }
617
618 if (vbus_notify)
619 extcon_set_state_sync(data->extcon, EXTCON_USB, vbus_det);
620
621 if (sun4i_usb_phy0_poll(data))
622 queue_delayed_work(system_wq, &data->detect, POLL_TIME);
623}
624
625static irqreturn_t sun4i_usb_phy0_id_vbus_det_irq(int irq, void *dev_id)
626{
627 struct sun4i_usb_phy_data *data = dev_id;
628
629
630 mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
631
632 return IRQ_HANDLED;
633}
634
635static int sun4i_usb_phy0_vbus_notify(struct notifier_block *nb,
636 unsigned long val, void *v)
637{
638 struct sun4i_usb_phy_data *data =
639 container_of(nb, struct sun4i_usb_phy_data, vbus_power_nb);
640 struct power_supply *psy = v;
641
642
643 if (val == PSY_EVENT_PROP_CHANGED && psy == data->vbus_power_supply)
644 mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
645
646 return NOTIFY_OK;
647}
648
649static struct phy *sun4i_usb_phy_xlate(struct device *dev,
650 struct of_phandle_args *args)
651{
652 struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
653
654 if (args->args[0] >= data->cfg->num_phys)
655 return ERR_PTR(-ENODEV);
656
657 if (data->cfg->missing_phys & BIT(args->args[0]))
658 return ERR_PTR(-ENODEV);
659
660 return data->phys[args->args[0]].phy;
661}
662
663static int sun4i_usb_phy_remove(struct platform_device *pdev)
664{
665 struct device *dev = &pdev->dev;
666 struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
667
668 if (data->vbus_power_nb_registered)
669 power_supply_unreg_notifier(&data->vbus_power_nb);
670 if (data->id_det_irq > 0)
671 devm_free_irq(dev, data->id_det_irq, data);
672 if (data->vbus_det_irq > 0)
673 devm_free_irq(dev, data->vbus_det_irq, data);
674
675 cancel_delayed_work_sync(&data->detect);
676
677 return 0;
678}
679
680static const unsigned int sun4i_usb_phy0_cable[] = {
681 EXTCON_USB,
682 EXTCON_USB_HOST,
683 EXTCON_NONE,
684};
685
686static int sun4i_usb_phy_probe(struct platform_device *pdev)
687{
688 struct sun4i_usb_phy_data *data;
689 struct device *dev = &pdev->dev;
690 struct device_node *np = dev->of_node;
691 struct phy_provider *phy_provider;
692 struct resource *res;
693 int i, ret;
694
695 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
696 if (!data)
697 return -ENOMEM;
698
699 spin_lock_init(&data->reg_lock);
700 INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
701 dev_set_drvdata(dev, data);
702 data->cfg = of_device_get_match_data(dev);
703 if (!data->cfg)
704 return -EINVAL;
705
706 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
707 data->base = devm_ioremap_resource(dev, res);
708 if (IS_ERR(data->base))
709 return PTR_ERR(data->base);
710
711 data->id_det_gpio = devm_gpiod_get_optional(dev, "usb0_id_det",
712 GPIOD_IN);
713 if (IS_ERR(data->id_det_gpio)) {
714 dev_err(dev, "Couldn't request ID GPIO\n");
715 return PTR_ERR(data->id_det_gpio);
716 }
717
718 data->vbus_det_gpio = devm_gpiod_get_optional(dev, "usb0_vbus_det",
719 GPIOD_IN);
720 if (IS_ERR(data->vbus_det_gpio)) {
721 dev_err(dev, "Couldn't request VBUS detect GPIO\n");
722 return PTR_ERR(data->vbus_det_gpio);
723 }
724
725 if (of_find_property(np, "usb0_vbus_power-supply", NULL)) {
726 data->vbus_power_supply = devm_power_supply_get_by_phandle(dev,
727 "usb0_vbus_power-supply");
728 if (IS_ERR(data->vbus_power_supply)) {
729 dev_err(dev, "Couldn't get the VBUS power supply\n");
730 return PTR_ERR(data->vbus_power_supply);
731 }
732
733 if (!data->vbus_power_supply)
734 return -EPROBE_DEFER;
735 }
736
737 data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0);
738
739 data->extcon = devm_extcon_dev_allocate(dev, sun4i_usb_phy0_cable);
740 if (IS_ERR(data->extcon)) {
741 dev_err(dev, "Couldn't allocate our extcon device\n");
742 return PTR_ERR(data->extcon);
743 }
744
745 ret = devm_extcon_dev_register(dev, data->extcon);
746 if (ret) {
747 dev_err(dev, "failed to register extcon: %d\n", ret);
748 return ret;
749 }
750
751 for (i = 0; i < data->cfg->num_phys; i++) {
752 struct sun4i_usb_phy *phy = data->phys + i;
753 char name[16];
754
755 if (data->cfg->missing_phys & BIT(i))
756 continue;
757
758 snprintf(name, sizeof(name), "usb%d_vbus", i);
759 phy->vbus = devm_regulator_get_optional(dev, name);
760 if (IS_ERR(phy->vbus)) {
761 if (PTR_ERR(phy->vbus) == -EPROBE_DEFER) {
762 dev_err(dev,
763 "Couldn't get regulator %s... Deferring probe\n",
764 name);
765 return -EPROBE_DEFER;
766 }
767
768 phy->vbus = NULL;
769 }
770
771 if (data->cfg->dedicated_clocks)
772 snprintf(name, sizeof(name), "usb%d_phy", i);
773 else
774 strlcpy(name, "usb_phy", sizeof(name));
775
776 phy->clk = devm_clk_get(dev, name);
777 if (IS_ERR(phy->clk)) {
778 dev_err(dev, "failed to get clock %s\n", name);
779 return PTR_ERR(phy->clk);
780 }
781
782
783 if (data->cfg->hsic_index && i == data->cfg->hsic_index) {
784
785 snprintf(name, sizeof(name), "usb%d_hsic_12M", i);
786 phy->clk2 = devm_clk_get(dev, name);
787 if (IS_ERR(phy->clk2)) {
788 dev_err(dev, "failed to get clock %s\n", name);
789 return PTR_ERR(phy->clk2);
790 }
791 }
792
793 snprintf(name, sizeof(name), "usb%d_reset", i);
794 phy->reset = devm_reset_control_get(dev, name);
795 if (IS_ERR(phy->reset)) {
796 dev_err(dev, "failed to get reset %s\n", name);
797 return PTR_ERR(phy->reset);
798 }
799
800 if (i || data->cfg->phy0_dual_route) {
801 snprintf(name, sizeof(name), "pmu%d", i);
802 res = platform_get_resource_byname(pdev,
803 IORESOURCE_MEM, name);
804 phy->pmu = devm_ioremap_resource(dev, res);
805 if (IS_ERR(phy->pmu))
806 return PTR_ERR(phy->pmu);
807 }
808
809 phy->phy = devm_phy_create(dev, NULL, &sun4i_usb_phy_ops);
810 if (IS_ERR(phy->phy)) {
811 dev_err(dev, "failed to create PHY %d\n", i);
812 return PTR_ERR(phy->phy);
813 }
814
815 phy->index = i;
816 phy_set_drvdata(phy->phy, &data->phys[i]);
817 }
818
819 data->id_det_irq = gpiod_to_irq(data->id_det_gpio);
820 if (data->id_det_irq > 0) {
821 ret = devm_request_irq(dev, data->id_det_irq,
822 sun4i_usb_phy0_id_vbus_det_irq,
823 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
824 "usb0-id-det", data);
825 if (ret) {
826 dev_err(dev, "Err requesting id-det-irq: %d\n", ret);
827 return ret;
828 }
829 }
830
831 data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio);
832 if (data->vbus_det_irq > 0) {
833 ret = devm_request_irq(dev, data->vbus_det_irq,
834 sun4i_usb_phy0_id_vbus_det_irq,
835 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
836 "usb0-vbus-det", data);
837 if (ret) {
838 dev_err(dev, "Err requesting vbus-det-irq: %d\n", ret);
839 data->vbus_det_irq = -1;
840 sun4i_usb_phy_remove(pdev);
841 return ret;
842 }
843 }
844
845 if (data->vbus_power_supply) {
846 data->vbus_power_nb.notifier_call = sun4i_usb_phy0_vbus_notify;
847 data->vbus_power_nb.priority = 0;
848 ret = power_supply_reg_notifier(&data->vbus_power_nb);
849 if (ret) {
850 sun4i_usb_phy_remove(pdev);
851 return ret;
852 }
853 data->vbus_power_nb_registered = true;
854 }
855
856 phy_provider = devm_of_phy_provider_register(dev, sun4i_usb_phy_xlate);
857 if (IS_ERR(phy_provider)) {
858 sun4i_usb_phy_remove(pdev);
859 return PTR_ERR(phy_provider);
860 }
861
862 dev_dbg(dev, "successfully loaded\n");
863
864 return 0;
865}
866
867static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
868 .num_phys = 3,
869 .type = sun4i_a10_phy,
870 .disc_thresh = 3,
871 .phyctl_offset = REG_PHYCTL_A10,
872 .dedicated_clocks = false,
873 .enable_pmu_unk1 = false,
874};
875
876static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
877 .num_phys = 2,
878 .type = sun4i_a10_phy,
879 .disc_thresh = 2,
880 .phyctl_offset = REG_PHYCTL_A10,
881 .dedicated_clocks = false,
882 .enable_pmu_unk1 = false,
883};
884
885static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
886 .num_phys = 3,
887 .type = sun6i_a31_phy,
888 .disc_thresh = 3,
889 .phyctl_offset = REG_PHYCTL_A10,
890 .dedicated_clocks = true,
891 .enable_pmu_unk1 = false,
892};
893
894static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
895 .num_phys = 3,
896 .type = sun4i_a10_phy,
897 .disc_thresh = 2,
898 .phyctl_offset = REG_PHYCTL_A10,
899 .dedicated_clocks = false,
900 .enable_pmu_unk1 = false,
901};
902
903static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
904 .num_phys = 2,
905 .type = sun6i_a31_phy,
906 .disc_thresh = 3,
907 .phyctl_offset = REG_PHYCTL_A10,
908 .dedicated_clocks = true,
909 .enable_pmu_unk1 = false,
910};
911
912static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
913 .num_phys = 2,
914 .type = sun8i_a33_phy,
915 .disc_thresh = 3,
916 .phyctl_offset = REG_PHYCTL_A33,
917 .dedicated_clocks = true,
918 .enable_pmu_unk1 = false,
919};
920
921static const struct sun4i_usb_phy_cfg sun8i_a83t_cfg = {
922 .num_phys = 3,
923 .hsic_index = 2,
924 .type = sun8i_a83t_phy,
925 .phyctl_offset = REG_PHYCTL_A33,
926 .dedicated_clocks = true,
927};
928
929static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
930 .num_phys = 4,
931 .type = sun8i_h3_phy,
932 .disc_thresh = 3,
933 .phyctl_offset = REG_PHYCTL_A33,
934 .dedicated_clocks = true,
935 .enable_pmu_unk1 = true,
936 .phy0_dual_route = true,
937};
938
939static const struct sun4i_usb_phy_cfg sun8i_r40_cfg = {
940 .num_phys = 3,
941 .type = sun8i_r40_phy,
942 .disc_thresh = 3,
943 .phyctl_offset = REG_PHYCTL_A33,
944 .dedicated_clocks = true,
945 .enable_pmu_unk1 = true,
946 .phy0_dual_route = true,
947};
948
949static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = {
950 .num_phys = 1,
951 .type = sun8i_v3s_phy,
952 .disc_thresh = 3,
953 .phyctl_offset = REG_PHYCTL_A33,
954 .dedicated_clocks = true,
955 .enable_pmu_unk1 = true,
956 .phy0_dual_route = true,
957};
958
959static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
960 .num_phys = 2,
961 .type = sun50i_a64_phy,
962 .disc_thresh = 3,
963 .phyctl_offset = REG_PHYCTL_A33,
964 .dedicated_clocks = true,
965 .enable_pmu_unk1 = true,
966 .phy0_dual_route = true,
967};
968
969static const struct sun4i_usb_phy_cfg sun50i_h6_cfg = {
970 .num_phys = 4,
971 .type = sun50i_h6_phy,
972 .disc_thresh = 3,
973 .phyctl_offset = REG_PHYCTL_A33,
974 .dedicated_clocks = true,
975 .enable_pmu_unk1 = true,
976 .phy0_dual_route = true,
977 .missing_phys = BIT(1) | BIT(2),
978};
979
980static const struct of_device_id sun4i_usb_phy_of_match[] = {
981 { .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
982 { .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
983 { .compatible = "allwinner,sun6i-a31-usb-phy", .data = &sun6i_a31_cfg },
984 { .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg },
985 { .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
986 { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
987 { .compatible = "allwinner,sun8i-a83t-usb-phy", .data = &sun8i_a83t_cfg },
988 { .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg },
989 { .compatible = "allwinner,sun8i-r40-usb-phy", .data = &sun8i_r40_cfg },
990 { .compatible = "allwinner,sun8i-v3s-usb-phy", .data = &sun8i_v3s_cfg },
991 { .compatible = "allwinner,sun50i-a64-usb-phy",
992 .data = &sun50i_a64_cfg},
993 { .compatible = "allwinner,sun50i-h6-usb-phy", .data = &sun50i_h6_cfg },
994 { },
995};
996MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
997
998static struct platform_driver sun4i_usb_phy_driver = {
999 .probe = sun4i_usb_phy_probe,
1000 .remove = sun4i_usb_phy_remove,
1001 .driver = {
1002 .of_match_table = sun4i_usb_phy_of_match,
1003 .name = "sun4i-usb-phy",
1004 }
1005};
1006module_platform_driver(sun4i_usb_phy_driver);
1007
1008MODULE_DESCRIPTION("Allwinner sun4i USB phy driver");
1009MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
1010MODULE_LICENSE("GPL v2");
1011
