1 // SPDX-License-Identifier: GPL-2.0
3 * Renesas R-Car Gen3 for USB2.0 PHY driver
5 * Copyright (C) 2015-2017 Renesas Electronics Corporation
7 * This is based on the phy-rcar-gen2 driver:
8 * Copyright (C) 2014 Renesas Solutions Corp.
9 * Copyright (C) 2014 Cogent Embedded, Inc.
12 #include <linux/extcon-provider.h>
13 #include <linux/interrupt.h>
15 #include <linux/module.h>
16 #include <linux/mutex.h>
18 #include <linux/phy/phy.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/regulator/consumer.h>
22 #include <linux/string.h>
23 #include <linux/usb/of.h>
24 #include <linux/workqueue.h>
26 /******* USB2.0 Host registers (original offset is +0x200) *******/
27 #define USB2_INT_ENABLE 0x000
28 #define USB2_USBCTR 0x00c
29 #define USB2_SPD_RSM_TIMSET 0x10c
30 #define USB2_OC_TIMSET 0x110
31 #define USB2_COMMCTRL 0x600
32 #define USB2_OBINTSTA 0x604
33 #define USB2_OBINTEN 0x608
34 #define USB2_VBCTRL 0x60c
35 #define USB2_LINECTRL1 0x610
36 #define USB2_ADPCTRL 0x630
39 #define USB2_INT_ENABLE_UCOM_INTEN BIT(3)
40 #define USB2_INT_ENABLE_USBH_INTB_EN BIT(2) /* For EHCI */
41 #define USB2_INT_ENABLE_USBH_INTA_EN BIT(1) /* For OHCI */
44 #define USB2_USBCTR_DIRPD BIT(2)
45 #define USB2_USBCTR_PLL_RST BIT(1)
48 #define USB2_SPD_RSM_TIMSET_INIT 0x014e029b
51 #define USB2_OC_TIMSET_INIT 0x000209ab
54 #define USB2_COMMCTRL_OTG_PERI BIT(31) /* 1 = Peripheral mode */
56 /* OBINTSTA and OBINTEN */
57 #define USB2_OBINT_SESSVLDCHG BIT(12)
58 #define USB2_OBINT_IDDIGCHG BIT(11)
59 #define USB2_OBINT_BITS (USB2_OBINT_SESSVLDCHG | \
63 #define USB2_VBCTRL_OCCLREN BIT(16)
64 #define USB2_VBCTRL_DRVVBUSSEL BIT(8)
65 #define USB2_VBCTRL_VBOUT BIT(0)
68 #define USB2_LINECTRL1_DPRPD_EN BIT(19)
69 #define USB2_LINECTRL1_DP_RPD BIT(18)
70 #define USB2_LINECTRL1_DMRPD_EN BIT(17)
71 #define USB2_LINECTRL1_DM_RPD BIT(16)
72 #define USB2_LINECTRL1_OPMODE_NODRV BIT(6)
75 #define USB2_ADPCTRL_OTGSESSVLD BIT(20)
76 #define USB2_ADPCTRL_IDDIG BIT(19)
77 #define USB2_ADPCTRL_IDPULLUP BIT(5) /* 1 = ID sampling is enabled */
78 #define USB2_ADPCTRL_DRVVBUS BIT(4)
81 #define USB2_OBINT_IDCHG_EN BIT(0)
82 #define USB2_LINECTRL1_USB2_IDMON BIT(0)
85 enum rcar_gen3_phy_index
{
92 static const u32 rcar_gen3_int_enable
[NUM_OF_PHYS
] = {
93 USB2_INT_ENABLE_USBH_INTB_EN
| USB2_INT_ENABLE_USBH_INTA_EN
,
94 USB2_INT_ENABLE_USBH_INTA_EN
,
95 USB2_INT_ENABLE_USBH_INTB_EN
,
99 struct rcar_gen3_phy
{
101 struct rcar_gen3_chan
*ch
;
104 bool otg_initialized
;
108 struct rcar_gen3_chan
{
110 struct device
*dev
; /* platform_device's device */
111 struct extcon_dev
*extcon
;
112 struct rcar_gen3_phy rphys
[NUM_OF_PHYS
];
113 struct regulator
*vbus
;
114 struct work_struct work
;
115 struct mutex lock
; /* protects rphys[...].powered */
116 enum usb_dr_mode dr_mode
;
118 u32 obint_enable_bits
;
122 bool soc_no_adp_ctrl
;
125 struct rcar_gen3_phy_drv_data
{
126 const struct phy_ops
*phy_usb2_ops
;
131 * Combination about is_otg_channel and uses_otg_pins:
133 * Parameters || Behaviors
134 * is_otg_channel | uses_otg_pins || irqs | role sysfs
135 * ---------------------+---------------++--------------+------------
136 * true | true || enabled | enabled
137 * true | false || disabled | enabled
138 * false | any || disabled | disabled
141 static void rcar_gen3_phy_usb2_work(struct work_struct
*work
)
143 struct rcar_gen3_chan
*ch
= container_of(work
, struct rcar_gen3_chan
,
146 if (ch
->extcon_host
) {
147 extcon_set_state_sync(ch
->extcon
, EXTCON_USB_HOST
, true);
148 extcon_set_state_sync(ch
->extcon
, EXTCON_USB
, false);
150 extcon_set_state_sync(ch
->extcon
, EXTCON_USB_HOST
, false);
151 extcon_set_state_sync(ch
->extcon
, EXTCON_USB
, true);
155 static void rcar_gen3_set_host_mode(struct rcar_gen3_chan
*ch
, int host
)
157 void __iomem
*usb2_base
= ch
->base
;
158 u32 val
= readl(usb2_base
+ USB2_COMMCTRL
);
160 dev_vdbg(ch
->dev
, "%s: %08x, %d\n", __func__
, val
, host
);
162 val
&= ~USB2_COMMCTRL_OTG_PERI
;
164 val
|= USB2_COMMCTRL_OTG_PERI
;
165 writel(val
, usb2_base
+ USB2_COMMCTRL
);
168 static void rcar_gen3_set_linectrl(struct rcar_gen3_chan
*ch
, int dp
, int dm
)
170 void __iomem
*usb2_base
= ch
->base
;
171 u32 val
= readl(usb2_base
+ USB2_LINECTRL1
);
173 dev_vdbg(ch
->dev
, "%s: %08x, %d, %d\n", __func__
, val
, dp
, dm
);
174 val
&= ~(USB2_LINECTRL1_DP_RPD
| USB2_LINECTRL1_DM_RPD
);
176 val
|= USB2_LINECTRL1_DP_RPD
;
178 val
|= USB2_LINECTRL1_DM_RPD
;
179 writel(val
, usb2_base
+ USB2_LINECTRL1
);
182 static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan
*ch
, int vbus
)
184 void __iomem
*usb2_base
= ch
->base
;
185 u32 vbus_ctrl_reg
= USB2_ADPCTRL
;
186 u32 vbus_ctrl_val
= USB2_ADPCTRL_DRVVBUS
;
189 dev_vdbg(ch
->dev
, "%s: %08x, %d\n", __func__
, val
, vbus
);
190 if (ch
->soc_no_adp_ctrl
) {
191 vbus_ctrl_reg
= USB2_VBCTRL
;
192 vbus_ctrl_val
= USB2_VBCTRL_VBOUT
;
195 val
= readl(usb2_base
+ vbus_ctrl_reg
);
197 val
|= vbus_ctrl_val
;
199 val
&= ~vbus_ctrl_val
;
200 writel(val
, usb2_base
+ vbus_ctrl_reg
);
203 static void rcar_gen3_control_otg_irq(struct rcar_gen3_chan
*ch
, int enable
)
205 void __iomem
*usb2_base
= ch
->base
;
206 u32 val
= readl(usb2_base
+ USB2_OBINTEN
);
208 if (ch
->uses_otg_pins
&& enable
)
209 val
|= ch
->obint_enable_bits
;
211 val
&= ~ch
->obint_enable_bits
;
212 writel(val
, usb2_base
+ USB2_OBINTEN
);
215 static void rcar_gen3_init_for_host(struct rcar_gen3_chan
*ch
)
217 rcar_gen3_set_linectrl(ch
, 1, 1);
218 rcar_gen3_set_host_mode(ch
, 1);
219 rcar_gen3_enable_vbus_ctrl(ch
, 1);
221 ch
->extcon_host
= true;
222 schedule_work(&ch
->work
);
225 static void rcar_gen3_init_for_peri(struct rcar_gen3_chan
*ch
)
227 rcar_gen3_set_linectrl(ch
, 0, 1);
228 rcar_gen3_set_host_mode(ch
, 0);
229 rcar_gen3_enable_vbus_ctrl(ch
, 0);
231 ch
->extcon_host
= false;
232 schedule_work(&ch
->work
);
235 static void rcar_gen3_init_for_b_host(struct rcar_gen3_chan
*ch
)
237 void __iomem
*usb2_base
= ch
->base
;
240 val
= readl(usb2_base
+ USB2_LINECTRL1
);
241 writel(val
| USB2_LINECTRL1_OPMODE_NODRV
, usb2_base
+ USB2_LINECTRL1
);
243 rcar_gen3_set_linectrl(ch
, 1, 1);
244 rcar_gen3_set_host_mode(ch
, 1);
245 rcar_gen3_enable_vbus_ctrl(ch
, 0);
247 val
= readl(usb2_base
+ USB2_LINECTRL1
);
248 writel(val
& ~USB2_LINECTRL1_OPMODE_NODRV
, usb2_base
+ USB2_LINECTRL1
);
251 static void rcar_gen3_init_for_a_peri(struct rcar_gen3_chan
*ch
)
253 rcar_gen3_set_linectrl(ch
, 0, 1);
254 rcar_gen3_set_host_mode(ch
, 0);
255 rcar_gen3_enable_vbus_ctrl(ch
, 1);
258 static void rcar_gen3_init_from_a_peri_to_a_host(struct rcar_gen3_chan
*ch
)
260 rcar_gen3_control_otg_irq(ch
, 0);
262 rcar_gen3_enable_vbus_ctrl(ch
, 1);
263 rcar_gen3_init_for_host(ch
);
265 rcar_gen3_control_otg_irq(ch
, 1);
268 static bool rcar_gen3_check_id(struct rcar_gen3_chan
*ch
)
270 if (!ch
->uses_otg_pins
)
271 return (ch
->dr_mode
== USB_DR_MODE_HOST
) ? false : true;
273 if (ch
->soc_no_adp_ctrl
)
274 return !!(readl(ch
->base
+ USB2_LINECTRL1
) & USB2_LINECTRL1_USB2_IDMON
);
276 return !!(readl(ch
->base
+ USB2_ADPCTRL
) & USB2_ADPCTRL_IDDIG
);
279 static void rcar_gen3_device_recognition(struct rcar_gen3_chan
*ch
)
281 if (!rcar_gen3_check_id(ch
))
282 rcar_gen3_init_for_host(ch
);
284 rcar_gen3_init_for_peri(ch
);
287 static bool rcar_gen3_is_host(struct rcar_gen3_chan
*ch
)
289 return !(readl(ch
->base
+ USB2_COMMCTRL
) & USB2_COMMCTRL_OTG_PERI
);
292 static enum phy_mode
rcar_gen3_get_phy_mode(struct rcar_gen3_chan
*ch
)
294 if (rcar_gen3_is_host(ch
))
295 return PHY_MODE_USB_HOST
;
297 return PHY_MODE_USB_DEVICE
;
300 static bool rcar_gen3_is_any_rphy_initialized(struct rcar_gen3_chan
*ch
)
304 for (i
= 0; i
< NUM_OF_PHYS
; i
++) {
305 if (ch
->rphys
[i
].initialized
)
312 static bool rcar_gen3_needs_init_otg(struct rcar_gen3_chan
*ch
)
316 for (i
= 0; i
< NUM_OF_PHYS
; i
++) {
317 if (ch
->rphys
[i
].otg_initialized
)
324 static bool rcar_gen3_are_all_rphys_power_off(struct rcar_gen3_chan
*ch
)
328 for (i
= 0; i
< NUM_OF_PHYS
; i
++) {
329 if (ch
->rphys
[i
].powered
)
336 static ssize_t
role_store(struct device
*dev
, struct device_attribute
*attr
,
337 const char *buf
, size_t count
)
339 struct rcar_gen3_chan
*ch
= dev_get_drvdata(dev
);
341 enum phy_mode cur_mode
, new_mode
;
343 if (!ch
->is_otg_channel
|| !rcar_gen3_is_any_rphy_initialized(ch
))
346 if (sysfs_streq(buf
, "host"))
347 new_mode
= PHY_MODE_USB_HOST
;
348 else if (sysfs_streq(buf
, "peripheral"))
349 new_mode
= PHY_MODE_USB_DEVICE
;
353 /* is_b_device: true is B-Device. false is A-Device. */
354 is_b_device
= rcar_gen3_check_id(ch
);
355 cur_mode
= rcar_gen3_get_phy_mode(ch
);
357 /* If current and new mode is the same, this returns the error */
358 if (cur_mode
== new_mode
)
361 if (new_mode
== PHY_MODE_USB_HOST
) { /* And is_host must be false */
362 if (!is_b_device
) /* A-Peripheral */
363 rcar_gen3_init_from_a_peri_to_a_host(ch
);
364 else /* B-Peripheral */
365 rcar_gen3_init_for_b_host(ch
);
366 } else { /* And is_host must be true */
367 if (!is_b_device
) /* A-Host */
368 rcar_gen3_init_for_a_peri(ch
);
370 rcar_gen3_init_for_peri(ch
);
376 static ssize_t
role_show(struct device
*dev
, struct device_attribute
*attr
,
379 struct rcar_gen3_chan
*ch
= dev_get_drvdata(dev
);
381 if (!ch
->is_otg_channel
|| !rcar_gen3_is_any_rphy_initialized(ch
))
384 return sprintf(buf
, "%s\n", rcar_gen3_is_host(ch
) ? "host" :
387 static DEVICE_ATTR_RW(role
);
389 static void rcar_gen3_init_otg(struct rcar_gen3_chan
*ch
)
391 void __iomem
*usb2_base
= ch
->base
;
394 /* Should not use functions of read-modify-write a register */
395 val
= readl(usb2_base
+ USB2_LINECTRL1
);
396 val
= (val
& ~USB2_LINECTRL1_DP_RPD
) | USB2_LINECTRL1_DPRPD_EN
|
397 USB2_LINECTRL1_DMRPD_EN
| USB2_LINECTRL1_DM_RPD
;
398 writel(val
, usb2_base
+ USB2_LINECTRL1
);
400 if (!ch
->soc_no_adp_ctrl
) {
401 val
= readl(usb2_base
+ USB2_VBCTRL
);
402 val
&= ~USB2_VBCTRL_OCCLREN
;
403 writel(val
| USB2_VBCTRL_DRVVBUSSEL
, usb2_base
+ USB2_VBCTRL
);
404 val
= readl(usb2_base
+ USB2_ADPCTRL
);
405 writel(val
| USB2_ADPCTRL_IDPULLUP
, usb2_base
+ USB2_ADPCTRL
);
409 writel(0xffffffff, usb2_base
+ USB2_OBINTSTA
);
410 writel(ch
->obint_enable_bits
, usb2_base
+ USB2_OBINTEN
);
412 rcar_gen3_device_recognition(ch
);
415 static irqreturn_t
rcar_gen3_phy_usb2_irq(int irq
, void *_ch
)
417 struct rcar_gen3_chan
*ch
= _ch
;
418 void __iomem
*usb2_base
= ch
->base
;
419 u32 status
= readl(usb2_base
+ USB2_OBINTSTA
);
420 irqreturn_t ret
= IRQ_NONE
;
422 if (status
& ch
->obint_enable_bits
) {
423 dev_vdbg(ch
->dev
, "%s: %08x\n", __func__
, status
);
424 writel(ch
->obint_enable_bits
, usb2_base
+ USB2_OBINTSTA
);
425 rcar_gen3_device_recognition(ch
);
432 static int rcar_gen3_phy_usb2_init(struct phy
*p
)
434 struct rcar_gen3_phy
*rphy
= phy_get_drvdata(p
);
435 struct rcar_gen3_chan
*channel
= rphy
->ch
;
436 void __iomem
*usb2_base
= channel
->base
;
440 if (!rcar_gen3_is_any_rphy_initialized(channel
) && channel
->irq
>= 0) {
441 INIT_WORK(&channel
->work
, rcar_gen3_phy_usb2_work
);
442 ret
= request_irq(channel
->irq
, rcar_gen3_phy_usb2_irq
,
443 IRQF_SHARED
, dev_name(channel
->dev
), channel
);
445 dev_err(channel
->dev
, "No irq handler (%d)\n", channel
->irq
);
450 /* Initialize USB2 part */
451 val
= readl(usb2_base
+ USB2_INT_ENABLE
);
452 val
|= USB2_INT_ENABLE_UCOM_INTEN
| rphy
->int_enable_bits
;
453 writel(val
, usb2_base
+ USB2_INT_ENABLE
);
454 writel(USB2_SPD_RSM_TIMSET_INIT
, usb2_base
+ USB2_SPD_RSM_TIMSET
);
455 writel(USB2_OC_TIMSET_INIT
, usb2_base
+ USB2_OC_TIMSET
);
457 /* Initialize otg part */
458 if (channel
->is_otg_channel
) {
459 if (rcar_gen3_needs_init_otg(channel
))
460 rcar_gen3_init_otg(channel
);
461 rphy
->otg_initialized
= true;
464 rphy
->initialized
= true;
469 static int rcar_gen3_phy_usb2_exit(struct phy
*p
)
471 struct rcar_gen3_phy
*rphy
= phy_get_drvdata(p
);
472 struct rcar_gen3_chan
*channel
= rphy
->ch
;
473 void __iomem
*usb2_base
= channel
->base
;
476 rphy
->initialized
= false;
478 if (channel
->is_otg_channel
)
479 rphy
->otg_initialized
= false;
481 val
= readl(usb2_base
+ USB2_INT_ENABLE
);
482 val
&= ~rphy
->int_enable_bits
;
483 if (!rcar_gen3_is_any_rphy_initialized(channel
))
484 val
&= ~USB2_INT_ENABLE_UCOM_INTEN
;
485 writel(val
, usb2_base
+ USB2_INT_ENABLE
);
487 if (channel
->irq
>= 0 && !rcar_gen3_is_any_rphy_initialized(channel
))
488 free_irq(channel
->irq
, channel
);
493 static int rcar_gen3_phy_usb2_power_on(struct phy
*p
)
495 struct rcar_gen3_phy
*rphy
= phy_get_drvdata(p
);
496 struct rcar_gen3_chan
*channel
= rphy
->ch
;
497 void __iomem
*usb2_base
= channel
->base
;
501 mutex_lock(&channel
->lock
);
502 if (!rcar_gen3_are_all_rphys_power_off(channel
))
506 ret
= regulator_enable(channel
->vbus
);
511 val
= readl(usb2_base
+ USB2_USBCTR
);
512 val
|= USB2_USBCTR_PLL_RST
;
513 writel(val
, usb2_base
+ USB2_USBCTR
);
514 val
&= ~USB2_USBCTR_PLL_RST
;
515 writel(val
, usb2_base
+ USB2_USBCTR
);
518 /* The powered flag should be set for any other phys anyway */
519 rphy
->powered
= true;
520 mutex_unlock(&channel
->lock
);
525 static int rcar_gen3_phy_usb2_power_off(struct phy
*p
)
527 struct rcar_gen3_phy
*rphy
= phy_get_drvdata(p
);
528 struct rcar_gen3_chan
*channel
= rphy
->ch
;
531 mutex_lock(&channel
->lock
);
532 rphy
->powered
= false;
534 if (!rcar_gen3_are_all_rphys_power_off(channel
))
538 ret
= regulator_disable(channel
->vbus
);
541 mutex_unlock(&channel
->lock
);
546 static const struct phy_ops rcar_gen3_phy_usb2_ops
= {
547 .init
= rcar_gen3_phy_usb2_init
,
548 .exit
= rcar_gen3_phy_usb2_exit
,
549 .power_on
= rcar_gen3_phy_usb2_power_on
,
550 .power_off
= rcar_gen3_phy_usb2_power_off
,
551 .owner
= THIS_MODULE
,
554 static const struct phy_ops rz_g1c_phy_usb2_ops
= {
555 .init
= rcar_gen3_phy_usb2_init
,
556 .exit
= rcar_gen3_phy_usb2_exit
,
557 .owner
= THIS_MODULE
,
560 static const struct rcar_gen3_phy_drv_data rcar_gen3_phy_usb2_data
= {
561 .phy_usb2_ops
= &rcar_gen3_phy_usb2_ops
,
562 .no_adp_ctrl
= false,
565 static const struct rcar_gen3_phy_drv_data rz_g1c_phy_usb2_data
= {
566 .phy_usb2_ops
= &rz_g1c_phy_usb2_ops
,
567 .no_adp_ctrl
= false,
570 static const struct rcar_gen3_phy_drv_data rz_g2l_phy_usb2_data
= {
571 .phy_usb2_ops
= &rcar_gen3_phy_usb2_ops
,
575 static const struct of_device_id rcar_gen3_phy_usb2_match_table
[] = {
577 .compatible
= "renesas,usb2-phy-r8a77470",
578 .data
= &rz_g1c_phy_usb2_data
,
581 .compatible
= "renesas,usb2-phy-r8a7795",
582 .data
= &rcar_gen3_phy_usb2_data
,
585 .compatible
= "renesas,usb2-phy-r8a7796",
586 .data
= &rcar_gen3_phy_usb2_data
,
589 .compatible
= "renesas,usb2-phy-r8a77965",
590 .data
= &rcar_gen3_phy_usb2_data
,
593 .compatible
= "renesas,rzg2l-usb2-phy",
594 .data
= &rz_g2l_phy_usb2_data
,
597 .compatible
= "renesas,rcar-gen3-usb2-phy",
598 .data
= &rcar_gen3_phy_usb2_data
,
602 MODULE_DEVICE_TABLE(of
, rcar_gen3_phy_usb2_match_table
);
604 static const unsigned int rcar_gen3_phy_cable
[] = {
610 static struct phy
*rcar_gen3_phy_usb2_xlate(struct device
*dev
,
611 const struct of_phandle_args
*args
)
613 struct rcar_gen3_chan
*ch
= dev_get_drvdata(dev
);
615 if (args
->args_count
== 0) /* For old version dts */
616 return ch
->rphys
[PHY_INDEX_BOTH_HC
].phy
;
617 else if (args
->args_count
> 1) /* Prevent invalid args count */
618 return ERR_PTR(-ENODEV
);
620 if (args
->args
[0] >= NUM_OF_PHYS
)
621 return ERR_PTR(-ENODEV
);
623 return ch
->rphys
[args
->args
[0]].phy
;
626 static enum usb_dr_mode
rcar_gen3_get_dr_mode(struct device_node
*np
)
628 enum usb_dr_mode candidate
= USB_DR_MODE_UNKNOWN
;
632 * If one of device nodes has other dr_mode except UNKNOWN,
633 * this function returns UNKNOWN. To achieve backward compatibility,
634 * this loop starts the index as 0.
636 for (i
= 0; i
< NUM_OF_PHYS
; i
++) {
637 enum usb_dr_mode mode
= of_usb_get_dr_mode_by_phy(np
, i
);
639 if (mode
!= USB_DR_MODE_UNKNOWN
) {
640 if (candidate
== USB_DR_MODE_UNKNOWN
)
642 else if (candidate
!= mode
)
643 return USB_DR_MODE_UNKNOWN
;
650 static int rcar_gen3_phy_usb2_probe(struct platform_device
*pdev
)
652 const struct rcar_gen3_phy_drv_data
*phy_data
;
653 struct device
*dev
= &pdev
->dev
;
654 struct rcar_gen3_chan
*channel
;
655 struct phy_provider
*provider
;
659 dev_err(dev
, "This driver needs device tree\n");
663 channel
= devm_kzalloc(dev
, sizeof(*channel
), GFP_KERNEL
);
667 channel
->base
= devm_platform_ioremap_resource(pdev
, 0);
668 if (IS_ERR(channel
->base
))
669 return PTR_ERR(channel
->base
);
671 channel
->obint_enable_bits
= USB2_OBINT_BITS
;
672 /* get irq number here and request_irq for OTG in phy_init */
673 channel
->irq
= platform_get_irq_optional(pdev
, 0);
674 channel
->dr_mode
= rcar_gen3_get_dr_mode(dev
->of_node
);
675 if (channel
->dr_mode
!= USB_DR_MODE_UNKNOWN
) {
676 channel
->is_otg_channel
= true;
677 channel
->uses_otg_pins
= !of_property_read_bool(dev
->of_node
,
678 "renesas,no-otg-pins");
679 channel
->extcon
= devm_extcon_dev_allocate(dev
,
680 rcar_gen3_phy_cable
);
681 if (IS_ERR(channel
->extcon
))
682 return PTR_ERR(channel
->extcon
);
684 ret
= devm_extcon_dev_register(dev
, channel
->extcon
);
686 dev_err(dev
, "Failed to register extcon\n");
692 * devm_phy_create() will call pm_runtime_enable(&phy->dev);
693 * And then, phy-core will manage runtime pm for this device.
695 pm_runtime_enable(dev
);
697 phy_data
= of_device_get_match_data(dev
);
703 channel
->soc_no_adp_ctrl
= phy_data
->no_adp_ctrl
;
704 if (phy_data
->no_adp_ctrl
)
705 channel
->obint_enable_bits
= USB2_OBINT_IDCHG_EN
;
707 mutex_init(&channel
->lock
);
708 for (i
= 0; i
< NUM_OF_PHYS
; i
++) {
709 channel
->rphys
[i
].phy
= devm_phy_create(dev
, NULL
,
710 phy_data
->phy_usb2_ops
);
711 if (IS_ERR(channel
->rphys
[i
].phy
)) {
712 dev_err(dev
, "Failed to create USB2 PHY\n");
713 ret
= PTR_ERR(channel
->rphys
[i
].phy
);
716 channel
->rphys
[i
].ch
= channel
;
717 channel
->rphys
[i
].int_enable_bits
= rcar_gen3_int_enable
[i
];
718 phy_set_drvdata(channel
->rphys
[i
].phy
, &channel
->rphys
[i
]);
721 channel
->vbus
= devm_regulator_get_optional(dev
, "vbus");
722 if (IS_ERR(channel
->vbus
)) {
723 if (PTR_ERR(channel
->vbus
) == -EPROBE_DEFER
) {
724 ret
= PTR_ERR(channel
->vbus
);
727 channel
->vbus
= NULL
;
730 platform_set_drvdata(pdev
, channel
);
733 provider
= devm_of_phy_provider_register(dev
, rcar_gen3_phy_usb2_xlate
);
734 if (IS_ERR(provider
)) {
735 dev_err(dev
, "Failed to register PHY provider\n");
736 ret
= PTR_ERR(provider
);
738 } else if (channel
->is_otg_channel
) {
739 ret
= device_create_file(dev
, &dev_attr_role
);
747 pm_runtime_disable(dev
);
752 static void rcar_gen3_phy_usb2_remove(struct platform_device
*pdev
)
754 struct rcar_gen3_chan
*channel
= platform_get_drvdata(pdev
);
756 if (channel
->is_otg_channel
)
757 device_remove_file(&pdev
->dev
, &dev_attr_role
);
759 pm_runtime_disable(&pdev
->dev
);
762 static struct platform_driver rcar_gen3_phy_usb2_driver
= {
764 .name
= "phy_rcar_gen3_usb2",
765 .of_match_table
= rcar_gen3_phy_usb2_match_table
,
767 .probe
= rcar_gen3_phy_usb2_probe
,
768 .remove_new
= rcar_gen3_phy_usb2_remove
,
770 module_platform_driver(rcar_gen3_phy_usb2_driver
);
772 MODULE_LICENSE("GPL v2");
773 MODULE_DESCRIPTION("Renesas R-Car Gen3 USB 2.0 PHY");
774 MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>");