2 * Allwinner sun4i MUSB Glue Layer
4 * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
7 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #include <linux/clk.h>
21 #include <linux/err.h>
22 #include <linux/extcon.h>
24 #include <linux/kernel.h>
25 #include <linux/module.h>
27 #include <linux/phy/phy-sun4i-usb.h>
28 #include <linux/platform_device.h>
29 #include <linux/reset.h>
30 #include <linux/soc/sunxi/sunxi_sram.h>
31 #include <linux/usb/musb.h>
32 #include <linux/usb/of.h>
33 #include <linux/usb/usb_phy_generic.h>
34 #include <linux/workqueue.h>
35 #include "musb_core.h"
38 * Register offsets, note sunxi musb has a different layout then most
39 * musb implementations, we translate the layout in musb_readb & friends.
41 #define SUNXI_MUSB_POWER 0x0040
42 #define SUNXI_MUSB_DEVCTL 0x0041
43 #define SUNXI_MUSB_INDEX 0x0042
44 #define SUNXI_MUSB_VEND0 0x0043
45 #define SUNXI_MUSB_INTRTX 0x0044
46 #define SUNXI_MUSB_INTRRX 0x0046
47 #define SUNXI_MUSB_INTRTXE 0x0048
48 #define SUNXI_MUSB_INTRRXE 0x004a
49 #define SUNXI_MUSB_INTRUSB 0x004c
50 #define SUNXI_MUSB_INTRUSBE 0x0050
51 #define SUNXI_MUSB_FRAME 0x0054
52 #define SUNXI_MUSB_TXFIFOSZ 0x0090
53 #define SUNXI_MUSB_TXFIFOADD 0x0092
54 #define SUNXI_MUSB_RXFIFOSZ 0x0094
55 #define SUNXI_MUSB_RXFIFOADD 0x0096
56 #define SUNXI_MUSB_FADDR 0x0098
57 #define SUNXI_MUSB_TXFUNCADDR 0x0098
58 #define SUNXI_MUSB_TXHUBADDR 0x009a
59 #define SUNXI_MUSB_TXHUBPORT 0x009b
60 #define SUNXI_MUSB_RXFUNCADDR 0x009c
61 #define SUNXI_MUSB_RXHUBADDR 0x009e
62 #define SUNXI_MUSB_RXHUBPORT 0x009f
63 #define SUNXI_MUSB_CONFIGDATA 0x00c0
66 #define SUNXI_MUSB_VEND0_PIO_MODE 0
69 #define SUNXI_MUSB_FL_ENABLED 0
70 #define SUNXI_MUSB_FL_HOSTMODE 1
71 #define SUNXI_MUSB_FL_HOSTMODE_PEND 2
72 #define SUNXI_MUSB_FL_VBUS_ON 3
73 #define SUNXI_MUSB_FL_PHY_ON 4
74 #define SUNXI_MUSB_FL_HAS_SRAM 5
75 #define SUNXI_MUSB_FL_HAS_RESET 6
76 #define SUNXI_MUSB_FL_NO_CONFIGDATA 7
78 /* Our read/write methods need access and do not get passed in a musb ref :| */
79 static struct musb *sunxi_musb;
83 struct platform_device *musb;
85 struct reset_control *rst;
87 struct platform_device *usb_phy;
88 struct usb_phy *xceiv;
90 struct work_struct work;
91 struct extcon_dev *extcon;
92 struct notifier_block host_nb;
95 /* phy_power_on / off may sleep, so we use a workqueue */
96 static void sunxi_musb_work(struct work_struct *work)
98 struct sunxi_glue *glue = container_of(work, struct sunxi_glue, work);
101 if (!test_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
104 if (test_and_clear_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags)) {
105 struct musb *musb = platform_get_drvdata(glue->musb);
109 spin_lock_irqsave(&musb->lock, flags);
111 devctl = readb(musb->mregs + SUNXI_MUSB_DEVCTL);
112 if (test_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags)) {
113 set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
114 musb->xceiv->otg->default_a = 1;
115 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
117 devctl |= MUSB_DEVCTL_SESSION;
119 clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
120 musb->xceiv->otg->default_a = 0;
121 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
123 devctl &= ~MUSB_DEVCTL_SESSION;
125 writeb(devctl, musb->mregs + SUNXI_MUSB_DEVCTL);
127 spin_unlock_irqrestore(&musb->lock, flags);
130 vbus_on = test_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
131 phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
133 if (phy_on != vbus_on) {
135 phy_power_on(glue->phy);
136 set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
138 phy_power_off(glue->phy);
139 clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
144 static void sunxi_musb_set_vbus(struct musb *musb, int is_on)
146 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
149 set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
151 clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
153 schedule_work(&glue->work);
156 static void sunxi_musb_pre_root_reset_end(struct musb *musb)
158 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
160 sun4i_usb_phy_set_squelch_detect(glue->phy, false);
163 static void sunxi_musb_post_root_reset_end(struct musb *musb)
165 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
167 sun4i_usb_phy_set_squelch_detect(glue->phy, true);
170 static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci)
172 struct musb *musb = __hci;
175 spin_lock_irqsave(&musb->lock, flags);
177 musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB);
179 writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB);
182 * sunxi musb often signals babble on low / full speed device
183 * disconnect, without ever raising MUSB_INTR_DISCONNECT, since
184 * normally babble never happens treat it as disconnect.
186 if ((musb->int_usb & MUSB_INTR_BABBLE) && is_host_active(musb)) {
187 musb->int_usb &= ~MUSB_INTR_BABBLE;
188 musb->int_usb |= MUSB_INTR_DISCONNECT;
191 if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) {
192 /* ep0 FADDR must be 0 when (re)entering peripheral mode */
193 musb_ep_select(musb->mregs, 0);
194 musb_writeb(musb->mregs, MUSB_FADDR, 0);
197 musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);
199 writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);
201 musb->int_rx = readw(musb->mregs + SUNXI_MUSB_INTRRX);
203 writew(musb->int_rx, musb->mregs + SUNXI_MUSB_INTRRX);
205 musb_interrupt(musb);
207 spin_unlock_irqrestore(&musb->lock, flags);
212 static int sunxi_musb_host_notifier(struct notifier_block *nb,
213 unsigned long event, void *ptr)
215 struct sunxi_glue *glue = container_of(nb, struct sunxi_glue, host_nb);
218 set_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
220 clear_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
222 set_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags);
223 schedule_work(&glue->work);
228 static int sunxi_musb_init(struct musb *musb)
230 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
234 musb->phy = glue->phy;
235 musb->xceiv = glue->xceiv;
237 if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) {
238 ret = sunxi_sram_claim(musb->controller->parent);
243 ret = clk_prepare_enable(glue->clk);
245 goto error_sram_release;
247 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
248 ret = reset_control_deassert(glue->rst);
250 goto error_clk_disable;
253 writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0);
255 /* Register notifier before calling phy_init() */
256 if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) {
257 ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST,
260 goto error_reset_assert;
263 ret = phy_init(glue->phy);
265 goto error_unregister_notifier;
267 if (musb->port_mode == MUSB_PORT_MODE_HOST) {
268 ret = phy_power_on(glue->phy);
271 set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
272 /* Stop musb work from turning vbus off again */
273 set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
276 musb->isr = sunxi_musb_interrupt;
278 /* Stop the musb-core from doing runtime pm (not supported on sunxi) */
279 pm_runtime_get(musb->controller);
285 error_unregister_notifier:
286 if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
287 extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
290 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
291 reset_control_assert(glue->rst);
293 clk_disable_unprepare(glue->clk);
295 if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
296 sunxi_sram_release(musb->controller->parent);
300 static int sunxi_musb_exit(struct musb *musb)
302 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
304 pm_runtime_put(musb->controller);
306 cancel_work_sync(&glue->work);
307 if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags))
308 phy_power_off(glue->phy);
312 if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
313 extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
316 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
317 reset_control_assert(glue->rst);
319 clk_disable_unprepare(glue->clk);
320 if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
321 sunxi_sram_release(musb->controller->parent);
323 devm_usb_put_phy(glue->dev, glue->xceiv);
328 static void sunxi_musb_enable(struct musb *musb)
330 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
332 /* musb_core does not call us in a balanced manner */
333 if (test_and_set_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
336 schedule_work(&glue->work);
339 static void sunxi_musb_disable(struct musb *musb)
341 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
343 clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags);
346 struct dma_controller *sunxi_musb_dma_controller_create(struct musb *musb,
352 void sunxi_musb_dma_controller_destroy(struct dma_controller *c)
357 * sunxi musb register layout
358 * 0x00 - 0x17 fifo regs, 1 long per fifo
359 * 0x40 - 0x57 generic control regs (power - frame)
360 * 0x80 - 0x8f ep control regs (addressed through hw_ep->regs, indexed)
361 * 0x90 - 0x97 fifo control regs (indexed)
362 * 0x98 - 0x9f multipoint / busctl regs (indexed)
363 * 0xc0 configdata reg
366 static u32 sunxi_musb_fifo_offset(u8 epnum)
371 static u32 sunxi_musb_ep_offset(u8 epnum, u16 offset)
373 WARN_ONCE(offset != 0,
374 "sunxi_musb_ep_offset called with non 0 offset\n");
376 return 0x80; /* indexed, so ignore epnum */
379 static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset)
381 return SUNXI_MUSB_TXFUNCADDR + offset;
384 static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset)
386 struct sunxi_glue *glue;
388 if (addr == sunxi_musb->mregs) {
389 /* generic control or fifo control reg access */
392 return readb(addr + SUNXI_MUSB_FADDR);
394 return readb(addr + SUNXI_MUSB_POWER);
396 return readb(addr + SUNXI_MUSB_INTRUSB);
398 return readb(addr + SUNXI_MUSB_INTRUSBE);
400 return readb(addr + SUNXI_MUSB_INDEX);
402 return 0; /* No testmode on sunxi */
404 return readb(addr + SUNXI_MUSB_DEVCTL);
406 return readb(addr + SUNXI_MUSB_TXFIFOSZ);
408 return readb(addr + SUNXI_MUSB_RXFIFOSZ);
409 case MUSB_CONFIGDATA + 0x10: /* See musb_read_configdata() */
410 glue = dev_get_drvdata(sunxi_musb->controller->parent);
411 /* A33 saves a reg, and we get to hardcode this */
412 if (test_bit(SUNXI_MUSB_FL_NO_CONFIGDATA,
416 return readb(addr + SUNXI_MUSB_CONFIGDATA);
417 /* Offset for these is fixed by sunxi_musb_busctl_offset() */
418 case SUNXI_MUSB_TXFUNCADDR:
419 case SUNXI_MUSB_TXHUBADDR:
420 case SUNXI_MUSB_TXHUBPORT:
421 case SUNXI_MUSB_RXFUNCADDR:
422 case SUNXI_MUSB_RXHUBADDR:
423 case SUNXI_MUSB_RXHUBPORT:
424 /* multipoint / busctl reg access */
425 return readb(addr + offset);
427 dev_err(sunxi_musb->controller->parent,
428 "Error unknown readb offset %u\n", offset);
431 } else if (addr == (sunxi_musb->mregs + 0x80)) {
432 /* ep control reg access */
433 /* sunxi has a 2 byte hole before the txtype register */
434 if (offset >= MUSB_TXTYPE)
436 return readb(addr + offset);
439 dev_err(sunxi_musb->controller->parent,
440 "Error unknown readb at 0x%x bytes offset\n",
441 (int)(addr - sunxi_musb->mregs));
445 static void sunxi_musb_writeb(void __iomem *addr, unsigned offset, u8 data)
447 if (addr == sunxi_musb->mregs) {
448 /* generic control or fifo control reg access */
451 return writeb(data, addr + SUNXI_MUSB_FADDR);
453 return writeb(data, addr + SUNXI_MUSB_POWER);
455 return writeb(data, addr + SUNXI_MUSB_INTRUSB);
457 return writeb(data, addr + SUNXI_MUSB_INTRUSBE);
459 return writeb(data, addr + SUNXI_MUSB_INDEX);
462 dev_warn(sunxi_musb->controller->parent,
463 "sunxi-musb does not have testmode\n");
466 return writeb(data, addr + SUNXI_MUSB_DEVCTL);
468 return writeb(data, addr + SUNXI_MUSB_TXFIFOSZ);
470 return writeb(data, addr + SUNXI_MUSB_RXFIFOSZ);
471 /* Offset for these is fixed by sunxi_musb_busctl_offset() */
472 case SUNXI_MUSB_TXFUNCADDR:
473 case SUNXI_MUSB_TXHUBADDR:
474 case SUNXI_MUSB_TXHUBPORT:
475 case SUNXI_MUSB_RXFUNCADDR:
476 case SUNXI_MUSB_RXHUBADDR:
477 case SUNXI_MUSB_RXHUBPORT:
478 /* multipoint / busctl reg access */
479 return writeb(data, addr + offset);
481 dev_err(sunxi_musb->controller->parent,
482 "Error unknown writeb offset %u\n", offset);
485 } else if (addr == (sunxi_musb->mregs + 0x80)) {
486 /* ep control reg access */
487 if (offset >= MUSB_TXTYPE)
489 return writeb(data, addr + offset);
492 dev_err(sunxi_musb->controller->parent,
493 "Error unknown writeb at 0x%x bytes offset\n",
494 (int)(addr - sunxi_musb->mregs));
497 static u16 sunxi_musb_readw(const void __iomem *addr, unsigned offset)
499 if (addr == sunxi_musb->mregs) {
500 /* generic control or fifo control reg access */
503 return readw(addr + SUNXI_MUSB_INTRTX);
505 return readw(addr + SUNXI_MUSB_INTRRX);
507 return readw(addr + SUNXI_MUSB_INTRTXE);
509 return readw(addr + SUNXI_MUSB_INTRRXE);
511 return readw(addr + SUNXI_MUSB_FRAME);
513 return readw(addr + SUNXI_MUSB_TXFIFOADD);
515 return readw(addr + SUNXI_MUSB_RXFIFOADD);
517 return 0; /* sunxi musb version is not known */
519 dev_err(sunxi_musb->controller->parent,
520 "Error unknown readw offset %u\n", offset);
523 } else if (addr == (sunxi_musb->mregs + 0x80)) {
524 /* ep control reg access */
525 return readw(addr + offset);
528 dev_err(sunxi_musb->controller->parent,
529 "Error unknown readw at 0x%x bytes offset\n",
530 (int)(addr - sunxi_musb->mregs));
534 static void sunxi_musb_writew(void __iomem *addr, unsigned offset, u16 data)
536 if (addr == sunxi_musb->mregs) {
537 /* generic control or fifo control reg access */
540 return writew(data, addr + SUNXI_MUSB_INTRTX);
542 return writew(data, addr + SUNXI_MUSB_INTRRX);
544 return writew(data, addr + SUNXI_MUSB_INTRTXE);
546 return writew(data, addr + SUNXI_MUSB_INTRRXE);
548 return writew(data, addr + SUNXI_MUSB_FRAME);
550 return writew(data, addr + SUNXI_MUSB_TXFIFOADD);
552 return writew(data, addr + SUNXI_MUSB_RXFIFOADD);
554 dev_err(sunxi_musb->controller->parent,
555 "Error unknown writew offset %u\n", offset);
558 } else if (addr == (sunxi_musb->mregs + 0x80)) {
559 /* ep control reg access */
560 return writew(data, addr + offset);
563 dev_err(sunxi_musb->controller->parent,
564 "Error unknown writew at 0x%x bytes offset\n",
565 (int)(addr - sunxi_musb->mregs));
568 static const struct musb_platform_ops sunxi_musb_ops = {
569 .quirks = MUSB_INDEXED_EP,
570 .init = sunxi_musb_init,
571 .exit = sunxi_musb_exit,
572 .enable = sunxi_musb_enable,
573 .disable = sunxi_musb_disable,
574 .fifo_offset = sunxi_musb_fifo_offset,
575 .ep_offset = sunxi_musb_ep_offset,
576 .busctl_offset = sunxi_musb_busctl_offset,
577 .readb = sunxi_musb_readb,
578 .writeb = sunxi_musb_writeb,
579 .readw = sunxi_musb_readw,
580 .writew = sunxi_musb_writew,
581 .dma_init = sunxi_musb_dma_controller_create,
582 .dma_exit = sunxi_musb_dma_controller_destroy,
583 .set_vbus = sunxi_musb_set_vbus,
584 .pre_root_reset_end = sunxi_musb_pre_root_reset_end,
585 .post_root_reset_end = sunxi_musb_post_root_reset_end,
588 /* Allwinner OTG supports up to 5 endpoints */
589 #define SUNXI_MUSB_MAX_EP_NUM 6
590 #define SUNXI_MUSB_RAM_BITS 11
592 static struct musb_fifo_cfg sunxi_musb_mode_cfg[] = {
593 MUSB_EP_FIFO_SINGLE(1, FIFO_TX, 512),
594 MUSB_EP_FIFO_SINGLE(1, FIFO_RX, 512),
595 MUSB_EP_FIFO_SINGLE(2, FIFO_TX, 512),
596 MUSB_EP_FIFO_SINGLE(2, FIFO_RX, 512),
597 MUSB_EP_FIFO_SINGLE(3, FIFO_TX, 512),
598 MUSB_EP_FIFO_SINGLE(3, FIFO_RX, 512),
599 MUSB_EP_FIFO_SINGLE(4, FIFO_TX, 512),
600 MUSB_EP_FIFO_SINGLE(4, FIFO_RX, 512),
601 MUSB_EP_FIFO_SINGLE(5, FIFO_TX, 512),
602 MUSB_EP_FIFO_SINGLE(5, FIFO_RX, 512),
605 static struct musb_hdrc_config sunxi_musb_hdrc_config = {
606 .fifo_cfg = sunxi_musb_mode_cfg,
607 .fifo_cfg_size = ARRAY_SIZE(sunxi_musb_mode_cfg),
611 .num_eps = SUNXI_MUSB_MAX_EP_NUM,
612 .ram_bits = SUNXI_MUSB_RAM_BITS,
616 static int sunxi_musb_probe(struct platform_device *pdev)
618 struct musb_hdrc_platform_data pdata;
619 struct platform_device_info pinfo;
620 struct sunxi_glue *glue;
621 struct device_node *np = pdev->dev.of_node;
625 dev_err(&pdev->dev, "Error no device tree node found\n");
629 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
633 memset(&pdata, 0, sizeof(pdata));
634 switch (usb_get_dr_mode(&pdev->dev)) {
635 #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
636 case USB_DR_MODE_HOST:
637 pdata.mode = MUSB_PORT_MODE_HOST;
640 #ifdef CONFIG_USB_MUSB_DUAL_ROLE
641 case USB_DR_MODE_OTG:
642 glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);
643 if (IS_ERR(glue->extcon)) {
644 if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)
645 return -EPROBE_DEFER;
646 dev_err(&pdev->dev, "Invalid or missing extcon\n");
647 return PTR_ERR(glue->extcon);
649 pdata.mode = MUSB_PORT_MODE_DUAL_ROLE;
653 dev_err(&pdev->dev, "Invalid or missing 'dr_mode' property\n");
656 pdata.platform_ops = &sunxi_musb_ops;
657 pdata.config = &sunxi_musb_hdrc_config;
659 glue->dev = &pdev->dev;
660 INIT_WORK(&glue->work, sunxi_musb_work);
661 glue->host_nb.notifier_call = sunxi_musb_host_notifier;
663 if (of_device_is_compatible(np, "allwinner,sun4i-a10-musb"))
664 set_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags);
666 if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb"))
667 set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
669 if (of_device_is_compatible(np, "allwinner,sun8i-a33-musb")) {
670 set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
671 set_bit(SUNXI_MUSB_FL_NO_CONFIGDATA, &glue->flags);
674 glue->clk = devm_clk_get(&pdev->dev, NULL);
675 if (IS_ERR(glue->clk)) {
676 dev_err(&pdev->dev, "Error getting clock: %ld\n",
678 return PTR_ERR(glue->clk);
681 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
682 glue->rst = devm_reset_control_get(&pdev->dev, NULL);
683 if (IS_ERR(glue->rst)) {
684 if (PTR_ERR(glue->rst) == -EPROBE_DEFER)
685 return -EPROBE_DEFER;
686 dev_err(&pdev->dev, "Error getting reset %ld\n",
688 return PTR_ERR(glue->rst);
692 glue->phy = devm_phy_get(&pdev->dev, "usb");
693 if (IS_ERR(glue->phy)) {
694 if (PTR_ERR(glue->phy) == -EPROBE_DEFER)
695 return -EPROBE_DEFER;
696 dev_err(&pdev->dev, "Error getting phy %ld\n",
698 return PTR_ERR(glue->phy);
701 glue->usb_phy = usb_phy_generic_register();
702 if (IS_ERR(glue->usb_phy)) {
703 dev_err(&pdev->dev, "Error registering usb-phy %ld\n",
704 PTR_ERR(glue->usb_phy));
705 return PTR_ERR(glue->usb_phy);
708 glue->xceiv = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
709 if (IS_ERR(glue->xceiv)) {
710 ret = PTR_ERR(glue->xceiv);
711 dev_err(&pdev->dev, "Error getting usb-phy %d\n", ret);
712 goto err_unregister_usb_phy;
715 platform_set_drvdata(pdev, glue);
717 memset(&pinfo, 0, sizeof(pinfo));
718 pinfo.name = "musb-hdrc";
719 pinfo.id = PLATFORM_DEVID_AUTO;
720 pinfo.parent = &pdev->dev;
721 pinfo.res = pdev->resource;
722 pinfo.num_res = pdev->num_resources;
724 pinfo.size_data = sizeof(pdata);
726 glue->musb = platform_device_register_full(&pinfo);
727 if (IS_ERR(glue->musb)) {
728 ret = PTR_ERR(glue->musb);
729 dev_err(&pdev->dev, "Error registering musb dev: %d\n", ret);
730 goto err_unregister_usb_phy;
735 err_unregister_usb_phy:
736 usb_phy_generic_unregister(glue->usb_phy);
740 static int sunxi_musb_remove(struct platform_device *pdev)
742 struct sunxi_glue *glue = platform_get_drvdata(pdev);
743 struct platform_device *usb_phy = glue->usb_phy;
745 platform_device_unregister(glue->musb); /* Frees glue ! */
746 usb_phy_generic_unregister(usb_phy);
751 static const struct of_device_id sunxi_musb_match[] = {
752 { .compatible = "allwinner,sun4i-a10-musb", },
753 { .compatible = "allwinner,sun6i-a31-musb", },
754 { .compatible = "allwinner,sun8i-a33-musb", },
758 static struct platform_driver sunxi_musb_driver = {
759 .probe = sunxi_musb_probe,
760 .remove = sunxi_musb_remove,
762 .name = "musb-sunxi",
763 .of_match_table = sunxi_musb_match,
766 module_platform_driver(sunxi_musb_driver);
768 MODULE_DESCRIPTION("Allwinner sunxi MUSB Glue Layer");
769 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
770 MODULE_LICENSE("GPL v2");