2 * Allwinner sun4i USB phy driver
4 * Copyright (C) 2014-2015 Hans de Goede <hdegoede@redhat.com>
7 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
9 * Modelled after: Samsung S5P/EXYNOS SoC series MIPI CSIS/DSIM DPHY driver
10 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
11 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
24 #include <linux/clk.h>
25 #include <linux/delay.h>
26 #include <linux/err.h>
27 #include <linux/extcon-provider.h>
29 #include <linux/interrupt.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/mutex.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>
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
54 #define REG_PMU_UNK1 0x10
56 #define PHYCTL_DATA BIT(7)
58 #define OTGCTL_ROUTE_MUSB BIT(0)
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)
65 /* ISCR, Interface Status and Control bits */
66 #define ISCR_ID_PULLUP_EN (1 << 17)
67 #define ISCR_DPDM_PULLUP_EN (1 << 16)
68 /* sunxi has the phy id/vbus pins not connected, so we use the force bits */
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)
76 /* Common Control Bits for Both PHYs */
77 #define PHY_PLL_BW 0x03
78 #define PHY_RES45_CAL_EN 0x0c
80 /* Private Control Bits for Each PHY */
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
90 /* A83T specific control bits for PHY0 */
91 #define PHY_CTL_VBUSVLDEXT BIT(5)
92 #define PHY_CTL_SIDDQ BIT(3)
94 /* A83T specific control bits for PHY2 HSIC */
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)
103 * Note do not raise the debounce time, we must report Vusb high within 100ms
104 * otherwise we get Vbus errors
106 #define DEBOUNCE_TIME msecs_to_jiffies(50)
107 #define POLL_TIME msecs_to_jiffies(250)
109 enum sun4i_usb_phy_type
{
121 struct sun4i_usb_phy_cfg
{
124 enum sun4i_usb_phy_type type
;
127 bool dedicated_clocks
;
128 bool enable_pmu_unk1
;
129 bool phy0_dual_route
;
133 struct sun4i_usb_phy_data
{
135 const struct sun4i_usb_phy_cfg
*cfg
;
136 enum usb_dr_mode dr_mode
;
137 spinlock_t reg_lock
; /* guard access to phyctl reg */
138 struct sun4i_usb_phy
{
141 struct regulator
*vbus
;
142 struct reset_control
*reset
;
148 /* phy0 / otg related variables */
149 struct extcon_dev
*extcon
;
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
;
161 struct delayed_work detect
;
164 #define to_sun4i_usb_phy_data(phy) \
165 container_of((phy), struct sun4i_usb_phy_data, phys[(phy)->index])
167 static void sun4i_usb_phy0_update_iscr(struct phy
*_phy
, u32 clr
, u32 set
)
169 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
170 struct sun4i_usb_phy_data
*data
= to_sun4i_usb_phy_data(phy
);
173 iscr
= readl(data
->base
+ REG_ISCR
);
176 writel(iscr
, data
->base
+ REG_ISCR
);
179 static void sun4i_usb_phy0_set_id_detect(struct phy
*phy
, u32 val
)
182 val
= ISCR_FORCE_ID_HIGH
;
184 val
= ISCR_FORCE_ID_LOW
;
186 sun4i_usb_phy0_update_iscr(phy
, ISCR_FORCE_ID_MASK
, val
);
189 static void sun4i_usb_phy0_set_vbus_detect(struct phy
*phy
, u32 val
)
192 val
= ISCR_FORCE_VBUS_HIGH
;
194 val
= ISCR_FORCE_VBUS_LOW
;
196 sun4i_usb_phy0_update_iscr(phy
, ISCR_FORCE_VBUS_MASK
, val
);
199 static void sun4i_usb_phy_write(struct sun4i_usb_phy
*phy
, u32 addr
, u32 data
,
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
;
208 spin_lock_irqsave(&phy_data
->reg_lock
, flags
);
210 if (phy_data
->cfg
->phyctl_offset
== REG_PHYCTL_A33
) {
211 /* SoCs newer than A33 need us to set phyctl to 0 explicitly */
215 for (i
= 0; i
< len
; i
++) {
216 temp
= readl(phyctl
);
218 /* clear the address portion */
219 temp
&= ~(0xff << 8);
221 /* set the address */
222 temp
|= ((addr
+ i
) << 8);
223 writel(temp
, phyctl
);
225 /* set the data bit and clear usbc bit*/
226 temp
= readb(phyctl
);
230 temp
&= ~PHYCTL_DATA
;
232 writeb(temp
, phyctl
);
235 temp
= readb(phyctl
);
237 writeb(temp
, phyctl
);
239 temp
= readb(phyctl
);
241 writeb(temp
, phyctl
);
246 spin_unlock_irqrestore(&phy_data
->reg_lock
, flags
);
249 static void sun4i_usb_phy_passby(struct sun4i_usb_phy
*phy
, int enable
)
251 struct sun4i_usb_phy_data
*phy_data
= to_sun4i_usb_phy_data(phy
);
257 bits
= SUNXI_AHB_ICHR8_EN
| SUNXI_AHB_INCR4_BURST_EN
|
258 SUNXI_AHB_INCRX_ALIGN_EN
| SUNXI_ULPI_BYPASS_EN
;
260 /* A83T USB2 is HSIC */
261 if (phy_data
->cfg
->type
== sun8i_a83t_phy
&& phy
->index
== 2)
262 bits
|= SUNXI_EHCI_HS_FORCE
| SUNXI_HSIC_CONNECT_INT
|
265 reg_value
= readl(phy
->pmu
);
272 writel(reg_value
, phy
->pmu
);
275 static int sun4i_usb_phy_init(struct phy
*_phy
)
277 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
278 struct sun4i_usb_phy_data
*data
= to_sun4i_usb_phy_data(phy
);
282 ret
= clk_prepare_enable(phy
->clk
);
286 ret
= clk_prepare_enable(phy
->clk2
);
288 clk_disable_unprepare(phy
->clk
);
292 ret
= reset_control_deassert(phy
->reset
);
294 clk_disable_unprepare(phy
->clk2
);
295 clk_disable_unprepare(phy
->clk
);
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
);
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
);
313 /* Enable USB 45 Ohm resistor calibration */
315 sun4i_usb_phy_write(phy
, PHY_RES45_CAL_EN
, 0x01, 1);
317 /* Adjust PHY's magnitude and rate */
318 sun4i_usb_phy_write(phy
, PHY_TX_AMPLITUDE_TUNE
, 0x14, 5);
320 /* Disconnect threshold adjustment */
321 sun4i_usb_phy_write(phy
, PHY_DISCON_TH_SEL
,
322 data
->cfg
->disc_thresh
, 2);
325 sun4i_usb_phy_passby(phy
, 1);
327 if (phy
->index
== 0) {
328 data
->phy0_init
= true;
330 /* Enable pull-ups */
331 sun4i_usb_phy0_update_iscr(_phy
, 0, ISCR_DPDM_PULLUP_EN
);
332 sun4i_usb_phy0_update_iscr(_phy
, 0, ISCR_ID_PULLUP_EN
);
334 /* Force ISCR and cable state updates */
337 queue_delayed_work(system_wq
, &data
->detect
, 0);
343 static int sun4i_usb_phy_exit(struct phy
*_phy
)
345 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
346 struct sun4i_usb_phy_data
*data
= to_sun4i_usb_phy_data(phy
);
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
;
354 writel(readl(phyctl
) | PHY_CTL_SIDDQ
, phyctl
);
357 /* Disable pull-ups */
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;
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
);
371 static int sun4i_usb_phy0_get_id_det(struct sun4i_usb_phy_data
*data
)
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
);
378 return 1; /* Fallback to peripheral mode */
379 case USB_DR_MODE_HOST
:
381 case USB_DR_MODE_PERIPHERAL
:
387 static int sun4i_usb_phy0_get_vbus_det(struct sun4i_usb_phy_data
*data
)
389 if (data
->vbus_det_gpio
)
390 return gpiod_get_value_cansleep(data
->vbus_det_gpio
);
392 if (data
->vbus_power_supply
) {
393 union power_supply_propval val
;
396 r
= power_supply_get_property(data
->vbus_power_supply
,
397 POWER_SUPPLY_PROP_PRESENT
, &val
);
402 /* Fallback: report vbus as high */
406 static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data
*data
)
408 return data
->vbus_det_gpio
|| data
->vbus_power_supply
;
411 static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data
*data
)
413 if ((data
->id_det_gpio
&& data
->id_det_irq
<= 0) ||
414 (data
->vbus_det_gpio
&& data
->vbus_det_irq
<= 0))
418 * The A31/A23/A33 companion pmics (AXP221/AXP223) do not
419 * generate vbus change interrupts when the board is driving
420 * vbus using the N_VBUSEN pin on the pmic, so we must poll
421 * when using the pmic for vbus-det _and_ we're driving vbus.
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
)
431 static int sun4i_usb_phy_power_on(struct phy
*_phy
)
433 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
434 struct sun4i_usb_phy_data
*data
= to_sun4i_usb_phy_data(phy
);
437 if (!phy
->vbus
|| phy
->regulator_on
)
440 /* For phy0 only turn on Vbus if we don't have an ext. Vbus */
441 if (phy
->index
== 0 && sun4i_usb_phy0_have_vbus_det(data
) &&
443 dev_warn(&_phy
->dev
, "External vbus detected, not enabling our own vbus\n");
447 ret
= regulator_enable(phy
->vbus
);
451 phy
->regulator_on
= true;
453 /* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */
454 if (phy
->index
== 0 && sun4i_usb_phy0_poll(data
))
455 mod_delayed_work(system_wq
, &data
->detect
, DEBOUNCE_TIME
);
460 static int sun4i_usb_phy_power_off(struct phy
*_phy
)
462 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
463 struct sun4i_usb_phy_data
*data
= to_sun4i_usb_phy_data(phy
);
465 if (!phy
->vbus
|| !phy
->regulator_on
)
468 regulator_disable(phy
->vbus
);
469 phy
->regulator_on
= false;
472 * phy0 vbus typically slowly discharges, sometimes this causes the
473 * Vbus gpio to not trigger an edge irq on Vbus off, so force a rescan.
475 if (phy
->index
== 0 && !sun4i_usb_phy0_poll(data
))
476 mod_delayed_work(system_wq
, &data
->detect
, POLL_TIME
);
481 static int sun4i_usb_phy_set_mode(struct phy
*_phy
,
482 enum phy_mode mode
, int submode
)
484 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
485 struct sun4i_usb_phy_data
*data
= to_sun4i_usb_phy_data(phy
);
492 case PHY_MODE_USB_HOST
:
493 new_mode
= USB_DR_MODE_HOST
;
495 case PHY_MODE_USB_DEVICE
:
496 new_mode
= USB_DR_MODE_PERIPHERAL
;
498 case PHY_MODE_USB_OTG
:
499 new_mode
= USB_DR_MODE_OTG
;
505 if (new_mode
!= data
->dr_mode
) {
506 dev_info(&_phy
->dev
, "Changing dr_mode to %d\n", new_mode
);
507 data
->dr_mode
= new_mode
;
510 data
->id_det
= -1; /* Force reprocessing of id */
511 data
->force_session_end
= true;
512 queue_delayed_work(system_wq
, &data
->detect
, 0);
517 void sun4i_usb_phy_set_squelch_detect(struct phy
*_phy
, bool enabled
)
519 struct sun4i_usb_phy
*phy
= phy_get_drvdata(_phy
);
521 sun4i_usb_phy_write(phy
, PHY_SQUELCH_DETECT
, enabled
? 0 : 2, 2);
523 EXPORT_SYMBOL_GPL(sun4i_usb_phy_set_squelch_detect
);
525 static const struct phy_ops sun4i_usb_phy_ops
= {
526 .init
= sun4i_usb_phy_init
,
527 .exit
= sun4i_usb_phy_exit
,
528 .power_on
= sun4i_usb_phy_power_on
,
529 .power_off
= sun4i_usb_phy_power_off
,
530 .set_mode
= sun4i_usb_phy_set_mode
,
531 .owner
= THIS_MODULE
,
534 static void sun4i_usb_phy0_reroute(struct sun4i_usb_phy_data
*data
, int id_det
)
538 regval
= readl(data
->base
+ REG_PHY_OTGCTL
);
540 /* Host mode. Route phy0 to EHCI/OHCI */
541 regval
&= ~OTGCTL_ROUTE_MUSB
;
543 /* Peripheral mode. Route phy0 to MUSB */
544 regval
|= OTGCTL_ROUTE_MUSB
;
546 writel(regval
, data
->base
+ REG_PHY_OTGCTL
);
549 static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct
*work
)
551 struct sun4i_usb_phy_data
*data
=
552 container_of(work
, struct sun4i_usb_phy_data
, detect
.work
);
553 struct phy
*phy0
= data
->phys
[0].phy
;
554 bool force_session_end
, id_notify
= false, vbus_notify
= false;
555 int id_det
, vbus_det
;
560 id_det
= sun4i_usb_phy0_get_id_det(data
);
561 vbus_det
= sun4i_usb_phy0_get_vbus_det(data
);
563 mutex_lock(&phy0
->mutex
);
565 if (!data
->phy0_init
) {
566 mutex_unlock(&phy0
->mutex
);
570 force_session_end
= data
->force_session_end
;
571 data
->force_session_end
= false;
573 if (id_det
!= data
->id_det
) {
574 /* id-change, force session end if we've no vbus detection */
575 if (data
->dr_mode
== USB_DR_MODE_OTG
&&
576 !sun4i_usb_phy0_have_vbus_det(data
))
577 force_session_end
= true;
579 /* When entering host mode (id = 0) force end the session now */
580 if (force_session_end
&& id_det
== 0) {
581 sun4i_usb_phy0_set_vbus_detect(phy0
, 0);
583 sun4i_usb_phy0_set_vbus_detect(phy0
, 1);
585 sun4i_usb_phy0_set_id_detect(phy0
, id_det
);
586 data
->id_det
= id_det
;
590 if (vbus_det
!= data
->vbus_det
) {
591 sun4i_usb_phy0_set_vbus_detect(phy0
, vbus_det
);
592 data
->vbus_det
= vbus_det
;
596 mutex_unlock(&phy0
->mutex
);
599 extcon_set_state_sync(data
->extcon
, EXTCON_USB_HOST
,
601 /* When leaving host mode force end the session here */
602 if (force_session_end
&& id_det
== 1) {
603 mutex_lock(&phy0
->mutex
);
604 sun4i_usb_phy0_set_vbus_detect(phy0
, 0);
606 sun4i_usb_phy0_set_vbus_detect(phy0
, 1);
607 mutex_unlock(&phy0
->mutex
);
610 /* Re-route PHY0 if necessary */
611 if (data
->cfg
->phy0_dual_route
)
612 sun4i_usb_phy0_reroute(data
, id_det
);
616 extcon_set_state_sync(data
->extcon
, EXTCON_USB
, vbus_det
);
618 if (sun4i_usb_phy0_poll(data
))
619 queue_delayed_work(system_wq
, &data
->detect
, POLL_TIME
);
622 static irqreturn_t
sun4i_usb_phy0_id_vbus_det_irq(int irq
, void *dev_id
)
624 struct sun4i_usb_phy_data
*data
= dev_id
;
626 /* vbus or id changed, let the pins settle and then scan them */
627 mod_delayed_work(system_wq
, &data
->detect
, DEBOUNCE_TIME
);
632 static int sun4i_usb_phy0_vbus_notify(struct notifier_block
*nb
,
633 unsigned long val
, void *v
)
635 struct sun4i_usb_phy_data
*data
=
636 container_of(nb
, struct sun4i_usb_phy_data
, vbus_power_nb
);
637 struct power_supply
*psy
= v
;
639 /* Properties on the vbus_power_supply changed, scan vbus_det */
640 if (val
== PSY_EVENT_PROP_CHANGED
&& psy
== data
->vbus_power_supply
)
641 mod_delayed_work(system_wq
, &data
->detect
, DEBOUNCE_TIME
);
646 static struct phy
*sun4i_usb_phy_xlate(struct device
*dev
,
647 struct of_phandle_args
*args
)
649 struct sun4i_usb_phy_data
*data
= dev_get_drvdata(dev
);
651 if (args
->args
[0] >= data
->cfg
->num_phys
)
652 return ERR_PTR(-ENODEV
);
654 if (data
->cfg
->missing_phys
& BIT(args
->args
[0]))
655 return ERR_PTR(-ENODEV
);
657 return data
->phys
[args
->args
[0]].phy
;
660 static int sun4i_usb_phy_remove(struct platform_device
*pdev
)
662 struct device
*dev
= &pdev
->dev
;
663 struct sun4i_usb_phy_data
*data
= dev_get_drvdata(dev
);
665 if (data
->vbus_power_nb_registered
)
666 power_supply_unreg_notifier(&data
->vbus_power_nb
);
667 if (data
->id_det_irq
> 0)
668 devm_free_irq(dev
, data
->id_det_irq
, data
);
669 if (data
->vbus_det_irq
> 0)
670 devm_free_irq(dev
, data
->vbus_det_irq
, data
);
672 cancel_delayed_work_sync(&data
->detect
);
677 static const unsigned int sun4i_usb_phy0_cable
[] = {
683 static int sun4i_usb_phy_probe(struct platform_device
*pdev
)
685 struct sun4i_usb_phy_data
*data
;
686 struct device
*dev
= &pdev
->dev
;
687 struct device_node
*np
= dev
->of_node
;
688 struct phy_provider
*phy_provider
;
689 struct resource
*res
;
692 data
= devm_kzalloc(dev
, sizeof(*data
), GFP_KERNEL
);
696 spin_lock_init(&data
->reg_lock
);
697 INIT_DELAYED_WORK(&data
->detect
, sun4i_usb_phy0_id_vbus_det_scan
);
698 dev_set_drvdata(dev
, data
);
699 data
->cfg
= of_device_get_match_data(dev
);
703 res
= platform_get_resource_byname(pdev
, IORESOURCE_MEM
, "phy_ctrl");
704 data
->base
= devm_ioremap_resource(dev
, res
);
705 if (IS_ERR(data
->base
))
706 return PTR_ERR(data
->base
);
708 data
->id_det_gpio
= devm_gpiod_get_optional(dev
, "usb0_id_det",
710 if (IS_ERR(data
->id_det_gpio
)) {
711 dev_err(dev
, "Couldn't request ID GPIO\n");
712 return PTR_ERR(data
->id_det_gpio
);
715 data
->vbus_det_gpio
= devm_gpiod_get_optional(dev
, "usb0_vbus_det",
717 if (IS_ERR(data
->vbus_det_gpio
)) {
718 dev_err(dev
, "Couldn't request VBUS detect GPIO\n");
719 return PTR_ERR(data
->vbus_det_gpio
);
722 if (of_find_property(np
, "usb0_vbus_power-supply", NULL
)) {
723 data
->vbus_power_supply
= devm_power_supply_get_by_phandle(dev
,
724 "usb0_vbus_power-supply");
725 if (IS_ERR(data
->vbus_power_supply
)) {
726 dev_err(dev
, "Couldn't get the VBUS power supply\n");
727 return PTR_ERR(data
->vbus_power_supply
);
730 if (!data
->vbus_power_supply
)
731 return -EPROBE_DEFER
;
734 data
->dr_mode
= of_usb_get_dr_mode_by_phy(np
, 0);
736 data
->extcon
= devm_extcon_dev_allocate(dev
, sun4i_usb_phy0_cable
);
737 if (IS_ERR(data
->extcon
)) {
738 dev_err(dev
, "Couldn't allocate our extcon device\n");
739 return PTR_ERR(data
->extcon
);
742 ret
= devm_extcon_dev_register(dev
, data
->extcon
);
744 dev_err(dev
, "failed to register extcon: %d\n", ret
);
748 for (i
= 0; i
< data
->cfg
->num_phys
; i
++) {
749 struct sun4i_usb_phy
*phy
= data
->phys
+ i
;
752 if (data
->cfg
->missing_phys
& BIT(i
))
755 snprintf(name
, sizeof(name
), "usb%d_vbus", i
);
756 phy
->vbus
= devm_regulator_get_optional(dev
, name
);
757 if (IS_ERR(phy
->vbus
)) {
758 if (PTR_ERR(phy
->vbus
) == -EPROBE_DEFER
) {
760 "Couldn't get regulator %s... Deferring probe\n",
762 return -EPROBE_DEFER
;
768 if (data
->cfg
->dedicated_clocks
)
769 snprintf(name
, sizeof(name
), "usb%d_phy", i
);
771 strlcpy(name
, "usb_phy", sizeof(name
));
773 phy
->clk
= devm_clk_get(dev
, name
);
774 if (IS_ERR(phy
->clk
)) {
775 dev_err(dev
, "failed to get clock %s\n", name
);
776 return PTR_ERR(phy
->clk
);
779 /* The first PHY is always tied to OTG, and never HSIC */
780 if (data
->cfg
->hsic_index
&& i
== data
->cfg
->hsic_index
) {
781 /* HSIC needs secondary clock */
782 snprintf(name
, sizeof(name
), "usb%d_hsic_12M", i
);
783 phy
->clk2
= devm_clk_get(dev
, name
);
784 if (IS_ERR(phy
->clk2
)) {
785 dev_err(dev
, "failed to get clock %s\n", name
);
786 return PTR_ERR(phy
->clk2
);
790 snprintf(name
, sizeof(name
), "usb%d_reset", i
);
791 phy
->reset
= devm_reset_control_get(dev
, name
);
792 if (IS_ERR(phy
->reset
)) {
793 dev_err(dev
, "failed to get reset %s\n", name
);
794 return PTR_ERR(phy
->reset
);
797 if (i
|| data
->cfg
->phy0_dual_route
) { /* No pmu for musb */
798 snprintf(name
, sizeof(name
), "pmu%d", i
);
799 res
= platform_get_resource_byname(pdev
,
800 IORESOURCE_MEM
, name
);
801 phy
->pmu
= devm_ioremap_resource(dev
, res
);
802 if (IS_ERR(phy
->pmu
))
803 return PTR_ERR(phy
->pmu
);
806 phy
->phy
= devm_phy_create(dev
, NULL
, &sun4i_usb_phy_ops
);
807 if (IS_ERR(phy
->phy
)) {
808 dev_err(dev
, "failed to create PHY %d\n", i
);
809 return PTR_ERR(phy
->phy
);
813 phy_set_drvdata(phy
->phy
, &data
->phys
[i
]);
816 data
->id_det_irq
= gpiod_to_irq(data
->id_det_gpio
);
817 if (data
->id_det_irq
> 0) {
818 ret
= devm_request_irq(dev
, data
->id_det_irq
,
819 sun4i_usb_phy0_id_vbus_det_irq
,
820 IRQF_TRIGGER_RISING
| IRQF_TRIGGER_FALLING
,
821 "usb0-id-det", data
);
823 dev_err(dev
, "Err requesting id-det-irq: %d\n", ret
);
828 data
->vbus_det_irq
= gpiod_to_irq(data
->vbus_det_gpio
);
829 if (data
->vbus_det_irq
> 0) {
830 ret
= devm_request_irq(dev
, data
->vbus_det_irq
,
831 sun4i_usb_phy0_id_vbus_det_irq
,
832 IRQF_TRIGGER_RISING
| IRQF_TRIGGER_FALLING
,
833 "usb0-vbus-det", data
);
835 dev_err(dev
, "Err requesting vbus-det-irq: %d\n", ret
);
836 data
->vbus_det_irq
= -1;
837 sun4i_usb_phy_remove(pdev
); /* Stop detect work */
842 if (data
->vbus_power_supply
) {
843 data
->vbus_power_nb
.notifier_call
= sun4i_usb_phy0_vbus_notify
;
844 data
->vbus_power_nb
.priority
= 0;
845 ret
= power_supply_reg_notifier(&data
->vbus_power_nb
);
847 sun4i_usb_phy_remove(pdev
); /* Stop detect work */
850 data
->vbus_power_nb_registered
= true;
853 phy_provider
= devm_of_phy_provider_register(dev
, sun4i_usb_phy_xlate
);
854 if (IS_ERR(phy_provider
)) {
855 sun4i_usb_phy_remove(pdev
); /* Stop detect work */
856 return PTR_ERR(phy_provider
);
859 dev_dbg(dev
, "successfully loaded\n");
864 static const struct sun4i_usb_phy_cfg sun4i_a10_cfg
= {
866 .type
= sun4i_a10_phy
,
868 .phyctl_offset
= REG_PHYCTL_A10
,
869 .dedicated_clocks
= false,
870 .enable_pmu_unk1
= false,
873 static const struct sun4i_usb_phy_cfg sun5i_a13_cfg
= {
875 .type
= sun4i_a10_phy
,
877 .phyctl_offset
= REG_PHYCTL_A10
,
878 .dedicated_clocks
= false,
879 .enable_pmu_unk1
= false,
882 static const struct sun4i_usb_phy_cfg sun6i_a31_cfg
= {
884 .type
= sun6i_a31_phy
,
886 .phyctl_offset
= REG_PHYCTL_A10
,
887 .dedicated_clocks
= true,
888 .enable_pmu_unk1
= false,
891 static const struct sun4i_usb_phy_cfg sun7i_a20_cfg
= {
893 .type
= sun4i_a10_phy
,
895 .phyctl_offset
= REG_PHYCTL_A10
,
896 .dedicated_clocks
= false,
897 .enable_pmu_unk1
= false,
900 static const struct sun4i_usb_phy_cfg sun8i_a23_cfg
= {
902 .type
= sun6i_a31_phy
,
904 .phyctl_offset
= REG_PHYCTL_A10
,
905 .dedicated_clocks
= true,
906 .enable_pmu_unk1
= false,
909 static const struct sun4i_usb_phy_cfg sun8i_a33_cfg
= {
911 .type
= sun8i_a33_phy
,
913 .phyctl_offset
= REG_PHYCTL_A33
,
914 .dedicated_clocks
= true,
915 .enable_pmu_unk1
= false,
918 static const struct sun4i_usb_phy_cfg sun8i_a83t_cfg
= {
921 .type
= sun8i_a83t_phy
,
922 .phyctl_offset
= REG_PHYCTL_A33
,
923 .dedicated_clocks
= true,
926 static const struct sun4i_usb_phy_cfg sun8i_h3_cfg
= {
928 .type
= sun8i_h3_phy
,
930 .phyctl_offset
= REG_PHYCTL_A33
,
931 .dedicated_clocks
= true,
932 .enable_pmu_unk1
= true,
933 .phy0_dual_route
= true,
936 static const struct sun4i_usb_phy_cfg sun8i_r40_cfg
= {
938 .type
= sun8i_r40_phy
,
940 .phyctl_offset
= REG_PHYCTL_A33
,
941 .dedicated_clocks
= true,
942 .enable_pmu_unk1
= true,
943 .phy0_dual_route
= true,
946 static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg
= {
948 .type
= sun8i_v3s_phy
,
950 .phyctl_offset
= REG_PHYCTL_A33
,
951 .dedicated_clocks
= true,
952 .enable_pmu_unk1
= true,
953 .phy0_dual_route
= true,
956 static const struct sun4i_usb_phy_cfg sun50i_a64_cfg
= {
958 .type
= sun50i_a64_phy
,
960 .phyctl_offset
= REG_PHYCTL_A33
,
961 .dedicated_clocks
= true,
962 .enable_pmu_unk1
= true,
963 .phy0_dual_route
= true,
966 static const struct sun4i_usb_phy_cfg sun50i_h6_cfg
= {
968 .type
= sun50i_h6_phy
,
970 .phyctl_offset
= REG_PHYCTL_A33
,
971 .dedicated_clocks
= true,
972 .enable_pmu_unk1
= true,
973 .phy0_dual_route
= true,
974 .missing_phys
= BIT(1) | BIT(2),
977 static const struct of_device_id sun4i_usb_phy_of_match
[] = {
978 { .compatible
= "allwinner,sun4i-a10-usb-phy", .data
= &sun4i_a10_cfg
},
979 { .compatible
= "allwinner,sun5i-a13-usb-phy", .data
= &sun5i_a13_cfg
},
980 { .compatible
= "allwinner,sun6i-a31-usb-phy", .data
= &sun6i_a31_cfg
},
981 { .compatible
= "allwinner,sun7i-a20-usb-phy", .data
= &sun7i_a20_cfg
},
982 { .compatible
= "allwinner,sun8i-a23-usb-phy", .data
= &sun8i_a23_cfg
},
983 { .compatible
= "allwinner,sun8i-a33-usb-phy", .data
= &sun8i_a33_cfg
},
984 { .compatible
= "allwinner,sun8i-a83t-usb-phy", .data
= &sun8i_a83t_cfg
},
985 { .compatible
= "allwinner,sun8i-h3-usb-phy", .data
= &sun8i_h3_cfg
},
986 { .compatible
= "allwinner,sun8i-r40-usb-phy", .data
= &sun8i_r40_cfg
},
987 { .compatible
= "allwinner,sun8i-v3s-usb-phy", .data
= &sun8i_v3s_cfg
},
988 { .compatible
= "allwinner,sun50i-a64-usb-phy",
989 .data
= &sun50i_a64_cfg
},
990 { .compatible
= "allwinner,sun50i-h6-usb-phy", .data
= &sun50i_h6_cfg
},
993 MODULE_DEVICE_TABLE(of
, sun4i_usb_phy_of_match
);
995 static struct platform_driver sun4i_usb_phy_driver
= {
996 .probe
= sun4i_usb_phy_probe
,
997 .remove
= sun4i_usb_phy_remove
,
999 .of_match_table
= sun4i_usb_phy_of_match
,
1000 .name
= "sun4i-usb-phy",
1003 module_platform_driver(sun4i_usb_phy_driver
);
1005 MODULE_DESCRIPTION("Allwinner sun4i USB phy driver");
1006 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
1007 MODULE_LICENSE("GPL v2");