2 * HCD driver for ADM5120 SoC
4 * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
6 * Based on the ADMtek 2.4 driver
7 * (C) Copyright 2003 Junius Chen <juniusc@admtek.com.tw>
8 * Which again was based on the ohci and uhci drivers.
11 #include <linux/autoconf.h>
12 #include <linux/moduleparam.h>
13 #include <linux/kernel.h>
14 #include <linux/errno.h>
15 #include <linux/interrupt.h>
16 #include <linux/usb.h>
17 #include <linux/platform_device.h>
19 #include "../core/hcd.h"
21 MODULE_DESCRIPTION("ADM5120 USB Host Controller Driver");
22 MODULE_LICENSE("GPL");
23 MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
25 #define ADMHCD_REG_CONTROL 0x00
26 #define ADMHCD_REG_INTSTATUS 0x04
27 #define ADMHCD_REG_INTENABLE 0x08
28 #define ADMHCD_REG_HOSTCONTROL 0x10
29 #define ADMHCD_REG_FMINTERVAL 0x18
30 #define ADMHCD_REG_FMNUMBER 0x1c
31 #define ADMHCD_REG_LSTHRESH 0x70
32 #define ADMHCD_REG_RHDESCR 0x74
33 #define ADMHCD_REG_PORTSTATUS0 0x78
34 #define ADMHCD_REG_PORTSTATUS1 0x7c
35 #define ADMHCD_REG_HOSTHEAD 0x80
38 #define ADMHCD_NUMPORTS 2
40 #define ADMHCD_HOST_EN 0x00000001 /* Host enable */
41 #define ADMHCD_SW_INTREQ 0x00000002 /* request software int */
42 #define ADMHCD_SW_RESET 0x00000008 /* Reset */
44 #define ADMHCD_INT_TD 0x00100000 /* TD completed */
45 #define ADMHCD_INT_SW 0x20000000 /* software interrupt */
46 #define ADMHCD_INT_FATAL 0x40000000 /* Fatal interrupt */
47 #define ADMHCD_INT_ACT 0x80000000 /* Interrupt active */
49 #define ADMHCD_STATE_RST 0x00000000 /* bus state reset */
50 #define ADMHCD_STATE_RES 0x00000001 /* bus state resume */
51 #define ADMHCD_STATE_OP 0x00000002 /* bus state operational */
52 #define ADMHCD_STATE_SUS 0x00000003 /* bus state suspended */
53 #define ADMHCD_DMA_EN 0x00000004 /* enable dma engine */
55 #define ADMHCD_NPS 0x00000020 /* No Power Switch */
56 #define ADMHCD_LPSC 0x04000000 /* Local power switch change */
58 #define ADMHCD_CCS 0x00000001 /* current connect status */
59 #define ADMHCD_PES 0x00000002 /* port enable status */
60 #define ADMHCD_PSS 0x00000004 /* port suspend status */
61 #define ADMHCD_POCI 0x00000008 /* port overcurrent indicator */
62 #define ADMHCD_PRS 0x00000010 /* port reset status */
63 #define ADMHCD_PPS 0x00000100 /* port power status */
64 #define ADMHCD_LSDA 0x00000200 /* low speed device attached */
65 #define ADMHCD_CSC 0x00010000 /* connect status change */
66 #define ADMHCD_PESC 0x00020000 /* enable status change */
67 #define ADMHCD_PSSC 0x00040000 /* suspend status change */
68 #define ADMHCD_OCIC 0x00080000 /* overcurrent change*/
69 #define ADMHCD_PRSC 0x00100000 /* reset status change */
73 /* Don't change first four, they used for DMA */
75 struct admhcd_td *tail;
76 struct admhcd_td *head;
77 struct admhcd_ed *next;
78 /* the rest is for the driver only: */
79 struct admhcd_td *cur;
80 struct usb_host_endpoint *ep;
82 struct admhcd_ed *real;
83 } __attribute__ ((packed));
85 #define ADMHCD_ED_EPSHIFT 7 /* Shift for endpoint number */
86 #define ADMHCD_ED_INT 0x00000800 /* Is this an int endpoint */
87 #define ADMHCD_ED_SPEED 0x00002000 /* Is it a high speed dev? */
88 #define ADMHCD_ED_SKIP 0x00004000 /* Skip this ED */
89 #define ADMHCD_ED_FORMAT 0x00008000 /* Is this an isoc endpoint */
90 #define ADMHCD_ED_MAXSHIFT 16 /* Shift for max packet size */
93 /* Don't change first four, they are used for DMA */
97 struct admhcd_td *next;
98 /* the rest is for the driver only: */
100 struct admhcd_td *real;
101 } __attribute__ ((packed));
103 #define ADMHCD_TD_OWN 0x80000000
104 #define ADMHCD_TD_TOGGLE 0x00000000
105 #define ADMHCD_TD_DATA0 0x01000000
106 #define ADMHCD_TD_DATA1 0x01800000
107 #define ADMHCD_TD_OUT 0x00200000
108 #define ADMHCD_TD_IN 0x00400000
109 #define ADMHCD_TD_SETUP 0x00000000
110 #define ADMHCD_TD_ISO 0x00010000
111 #define ADMHCD_TD_R 0x00040000
112 #define ADMHCD_TD_INTEN 0x00010000
114 static int admhcd_td_err[16] = {
116 -EREMOTEIO, /* CRC */
117 -EREMOTEIO, /* bit stuff */
118 -EREMOTEIO, /* data toggle */
120 -ETIMEDOUT, /* timeout */
121 -EPROTO, /* pid err */
122 -EPROTO, /* unexpected pid */
123 -EREMOTEIO, /* data overrun */
124 -EREMOTEIO, /* data underrun */
125 -ETIMEDOUT, /* 1010 */
126 -ETIMEDOUT, /* 1011 */
127 -EREMOTEIO, /* buffer overrun */
128 -EREMOTEIO, /* buffer underrun */
129 -ETIMEDOUT, /* 1110 */
130 -ETIMEDOUT, /* 1111 */
133 #define ADMHCD_TD_ERRMASK 0x38000000
134 #define ADMHCD_TD_ERRSHIFT 27
136 #define TD(td) ((struct admhcd_td *)(((u32)(td)) & ~0xf))
137 #define ED(ed) ((struct admhcd_ed *)(((u32)(ed)) & ~0xf))
146 #define hcd_to_admhcd(hcd) ((struct admhcd *)(hcd)->hcd_priv)
148 static char hcd_name[] = "adm5120-hcd";
150 static u32 admhcd_reg_get(struct admhcd *ahcd, int reg)
152 return *(volatile u32 *)KSEG1ADDR(ahcd->base+reg);
155 static void admhcd_reg_set(struct admhcd *ahcd, int reg, u32 val)
157 *(volatile u32 *)KSEG1ADDR(ahcd->base+reg) = val;
160 static void admhcd_lock(struct admhcd *ahcd)
162 spin_lock_irqsave(&ahcd->lock, ahcd->flags);
163 ahcd->dma_en = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) &
165 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
168 static void admhcd_unlock(struct admhcd *ahcd)
170 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL,
171 ADMHCD_STATE_OP | ahcd->dma_en);
172 spin_unlock_irqrestore(&ahcd->lock, ahcd->flags);
175 static struct admhcd_td *admhcd_td_alloc(struct admhcd_ed *ed, struct urb *urb)
177 struct admhcd_td *tdn, *td;
179 tdn = kmalloc(sizeof(struct admhcd_td), GFP_ATOMIC);
183 tdn = (struct admhcd_td *)KSEG1ADDR(tdn);
184 memset(tdn, 0, sizeof(struct admhcd_td));
185 if (ed->cur == NULL) {
191 /* Supply back the old tail and link in new td as tail */
193 TD(ed->tail)->next = tdn;
201 static void admhcd_td_free(struct admhcd_ed *ed, struct urb *urb)
203 struct admhcd_td *td, **tdp;
206 ed->control |= ADMHCD_ED_SKIP;
215 while (td && td->urb == urb) {
222 /* Find an endpoint's descriptor, if needed allocate a new one and link it
225 static struct admhcd_ed *admhcd_get_ed(struct admhcd *ahcd,
226 struct usb_host_endpoint *ep, struct urb *urb)
228 struct admhcd_ed *hosthead;
229 struct admhcd_ed *found = NULL, *ed = NULL;
230 unsigned int pipe = urb->pipe;
233 hosthead = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
235 for (ed = hosthead;; ed = ED(ed->next)) {
240 if (ED(ed->next) == hosthead)
245 found = kmalloc(sizeof(struct admhcd_ed), GFP_ATOMIC);
248 memset(found, 0, sizeof(struct admhcd_ed));
251 found = (struct admhcd_ed *)KSEG1ADDR(found);
252 found->control = usb_pipedevice(pipe) |
253 (usb_pipeendpoint(pipe) << ADMHCD_ED_EPSHIFT) |
254 (usb_pipeint(pipe) ? ADMHCD_ED_INT : 0) |
255 (urb->dev->speed == USB_SPEED_FULL ? ADMHCD_ED_SPEED : 0) |
256 (usb_pipeisoc(pipe) ? ADMHCD_ED_FORMAT : 0) |
257 (usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)) << ADMHCD_ED_MAXSHIFT);
258 /* Alloc first dummy td */
259 admhcd_td_alloc(found, NULL);
261 found->next = hosthead;
265 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)found);
273 static struct admhcd_td *admhcd_td_fill(u32 control, struct admhcd_td *td,
274 dma_addr_t data, int len)
278 td->control = control;
282 static void admhcd_ed_start(struct admhcd *ahcd, struct admhcd_ed *ed)
284 struct admhcd_td *td = ed->cur;
291 td->control |= ADMHCD_TD_OWN;
292 if (TD(td->next)->urb != td->urb) {
293 td->buflen |= ADMHCD_TD_INTEN;
299 ed->head = TD(ed->head);
300 ahcd->dma_en |= ADMHCD_DMA_EN;
303 static irqreturn_t adm5120hcd_irq(int irq, void *ptr, struct pt_regs *regs)
305 struct usb_hcd *hcd = (struct usb_hcd *)ptr;
306 struct admhcd *ahcd = hcd_to_admhcd(hcd);
309 intstatus = admhcd_reg_get(ahcd, ADMHCD_REG_INTSTATUS);
310 if (intstatus & ADMHCD_INT_FATAL) {
311 admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_FATAL);
314 if (intstatus & ADMHCD_INT_SW) {
315 admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_SW);
318 if (intstatus & ADMHCD_INT_TD) {
319 struct admhcd_ed *ed, *head;
321 admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_TD);
323 head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
326 /* Is it a finished TD? */
327 if (ed->urb && !(ed->cur->control & ADMHCD_TD_OWN)) {
328 struct admhcd_td *td;
332 error = (td->control & ADMHCD_TD_ERRMASK) >>
334 ed->urb->status = admhcd_td_err[error];
335 admhcd_td_free(ed, ed->urb);
336 // Calculate real length!!!
337 ed->urb->actual_length = ed->urb->transfer_buffer_length;
338 ed->urb->hcpriv = NULL;
339 usb_hcd_giveback_urb(hcd, ed->urb);
342 admhcd_ed_start(ahcd, ed);
344 } while (ed != head);
350 static int admhcd_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
351 struct urb *urb, int mem_flags)
353 struct admhcd *ahcd = hcd_to_admhcd(hcd);
354 struct admhcd_ed *ed;
355 struct admhcd_td *td;
356 int size = 0, i, zero = 0, ret = 0;
357 unsigned int pipe = urb->pipe, toggle = 0;
358 dma_addr_t data = (dma_addr_t)urb->transfer_buffer;
359 int data_len = urb->transfer_buffer_length;
361 ed = admhcd_get_ed(ahcd, ep, urb);
365 switch(usb_pipetype(pipe)) {
371 size += urb->transfer_buffer_length / 4096;
372 if (urb->transfer_buffer_length % 4096)
376 else if (urb->transfer_flags & URB_ZERO_PACKET &&
377 !(urb->transfer_buffer_length %
378 usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)))) {
383 case PIPE_ISOCHRONOUS:
384 size = urb->number_of_packets;
389 /* Remember the first td */
390 td = admhcd_td_alloc(ed, urb);
395 /* Allocate additionall tds first */
396 for (i = 1; i < size; i++) {
397 if (admhcd_td_alloc(ed, urb) == NULL) {
398 admhcd_td_free(ed, urb);
404 if (usb_gettoggle(urb->dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)))
405 toggle = ADMHCD_TD_TOGGLE;
407 toggle = ADMHCD_TD_DATA0;
408 usb_settoggle(urb->dev, usb_pipeendpoint(pipe),
409 usb_pipeout(pipe), 1);
412 switch(usb_pipetype(pipe)) {
414 td = admhcd_td_fill(ADMHCD_TD_SETUP | ADMHCD_TD_DATA0,
415 td, (dma_addr_t)urb->setup_packet, 8);
416 while (data_len > 0) {
417 td = admhcd_td_fill(ADMHCD_TD_DATA1
420 ADMHCD_TD_OUT : ADMHCD_TD_IN), td,
421 data, data_len % 4097);
424 admhcd_td_fill(ADMHCD_TD_DATA1 | (usb_pipeout(pipe) ?
425 ADMHCD_TD_IN : ADMHCD_TD_OUT), td,
430 //info ok for interrupt?
432 while(data_len > 4096) {
433 td = admhcd_td_fill((usb_pipeout(pipe) ?
435 ADMHCD_TD_IN | ADMHCD_TD_R) |
436 (i ? ADMHCD_TD_TOGGLE : toggle), td,
442 td = admhcd_td_fill((usb_pipeout(pipe) ?
443 ADMHCD_TD_OUT : ADMHCD_TD_IN) |
444 (i ? ADMHCD_TD_TOGGLE : toggle), td, data, data_len);
447 admhcd_td_fill((usb_pipeout(pipe) ?
448 ADMHCD_TD_OUT : ADMHCD_TD_IN) |
449 (i ? ADMHCD_TD_TOGGLE : toggle), td, 0, 0);
451 case PIPE_ISOCHRONOUS:
452 for (i = 0; i < urb->number_of_packets; i++) {
453 td = admhcd_td_fill(ADMHCD_TD_ISO |
454 ((urb->start_frame + i) & 0xffff), td,
455 data + urb->iso_frame_desc[i].offset,
456 urb->iso_frame_desc[i].length);
461 admhcd_ed_start(ahcd, ed);
467 static int admhcd_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
469 struct admhcd *ahcd = hcd_to_admhcd(hcd);
470 struct admhcd_ed *ed;
475 if (ed && ed->urb != urb)
476 admhcd_td_free(ed, urb);
482 static void admhcd_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
484 struct admhcd *ahcd = hcd_to_admhcd(hcd);
485 struct admhcd_ed *ed, *edt, *head;
489 head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
492 for (ed = head; ED(ed->next) != head; ed = ED(ed->next))
498 admhcd_td_free(ed, ed->cur->urb);
500 if (ED(ed->next) == ed) {
501 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0);
506 for (edt = head; ED(edt->next) != head; edt = ED(edt->next));
507 edt->next = ED(ed->next);
508 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)ed->next);
511 for (edt = head; edt->next != ed; edt = edt->next);
512 edt->next = ed->next;
519 static int admhcd_get_frame_number(struct usb_hcd *hcd)
521 struct admhcd *ahcd = hcd_to_admhcd(hcd);
523 return admhcd_reg_get(ahcd, ADMHCD_REG_FMNUMBER) & 0x0000ffff;
526 static int admhcd_hub_status_data(struct usb_hcd *hcd, char *buf)
528 struct admhcd *ahcd = hcd_to_admhcd(hcd);
532 for (port = 0; port < ADMHCD_NUMPORTS; port++) {
533 if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4) &
534 (ADMHCD_CSC | ADMHCD_PESC | ADMHCD_PSSC | ADMHCD_OCIC |
536 *buf |= (1 << (port + 1));
541 static __u8 root_hub_hub_des[] = {
542 0x09, /* __u8 bLength; */
543 0x29, /* __u8 bDescriptorType; Hub-descriptor */
544 0x02, /* __u8 bNbrPorts; */
545 0x0a, 0x00, /* __u16 wHubCharacteristics; */
546 0x01, /* __u8 bPwrOn2pwrGood; 2ms */
547 0x00, /* __u8 bHubContrCurrent; 0mA */
548 0x00, /* __u8 DeviceRemovable; */
549 0xff, /* __u8 PortPwrCtrlMask; */
552 static int admhcd_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
553 u16 wIndex, char *buf, u16 wLength)
555 struct admhcd *ahcd = hcd_to_admhcd(hcd);
557 unsigned int port = wIndex -1;
562 *(__le32 *)buf = cpu_to_le32(0);
565 if (port >= ADMHCD_NUMPORTS)
567 *(__le32 *)buf = cpu_to_le32(
568 admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4));
570 case SetHubFeature: /* We don't implement these */
571 case ClearHubFeature:
573 case C_HUB_OVER_CURRENT:
574 case C_HUB_LOCAL_POWER:
580 if (port >= ADMHCD_NUMPORTS)
584 case USB_PORT_FEAT_SUSPEND:
585 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
588 case USB_PORT_FEAT_RESET:
589 if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4)
592 ADMHCD_REG_PORTSTATUS0 + port*4,
593 ADMHCD_PRS | ADMHCD_CSC);
596 ADMHCD_REG_PORTSTATUS0 + port*4,
597 ADMHCD_PES | ADMHCD_CSC);
600 case USB_PORT_FEAT_POWER:
601 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
608 case ClearPortFeature:
609 if (port >= ADMHCD_NUMPORTS)
613 case USB_PORT_FEAT_ENABLE:
614 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
617 case USB_PORT_FEAT_C_ENABLE:
618 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
621 case USB_PORT_FEAT_SUSPEND:
622 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
625 case USB_PORT_FEAT_C_SUSPEND:
626 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
628 case USB_PORT_FEAT_POWER:
629 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
632 case USB_PORT_FEAT_C_CONNECTION:
633 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
636 case USB_PORT_FEAT_C_OVER_CURRENT:
637 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
640 case USB_PORT_FEAT_C_RESET:
641 admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
648 case GetHubDescriptor:
649 len = min_t(unsigned int, sizeof(root_hub_hub_des), wLength);
650 memcpy(buf, root_hub_hub_des, len);
660 static struct hc_driver adm5120_hc_driver = {
661 .description = hcd_name,
662 .product_desc = "ADM5120 HCD",
663 .hcd_priv_size = sizeof(struct admhcd),
665 .urb_enqueue = admhcd_urb_enqueue,
666 .urb_dequeue = admhcd_urb_dequeue,
667 .endpoint_disable = admhcd_endpoint_disable,
668 .get_frame_number = admhcd_get_frame_number,
669 .hub_status_data = admhcd_hub_status_data,
670 .hub_control = admhcd_hub_control,
673 static int __init adm5120hcd_probe(struct platform_device *pdev)
677 struct usb_device *udev;
680 if (!request_mem_region(pdev->resource[0].start,
681 pdev->resource[0].end - pdev->resource[0].start, hcd_name)) {
682 pr_debug("couldn't request mem\n");
687 //hcd = usb_create_hcd(&adm5120_hc_driver, pdev, pdev->bus_id);
691 ahcd = hcd_to_admhcd(hcd);
692 dev_set_drvdata(pdev, ahcd);
693 hcd->self.controller = pdev;
694 //hcd->self.bus_name = pdev->bus_id;
695 hcd->irq = pdev->resource[1].start;
696 hcd->regs = (void *)pdev->resource[0].start;
697 hcd->product_desc = hcd_name;
698 ahcd->base = pdev->resource[0].start;
700 if (request_irq(pdev->resource[1].start, adm5120hcd_irq, 0, hcd_name,
702 pr_debug("couldn't request irq\n");
707 //err = usb_register_bus(&hcd->self);
711 spin_lock_init(&ahcd->lock);
713 admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
715 admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET);
716 while (admhcd_reg_get(ahcd, ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET)
719 admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_HOST_EN);
720 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0x00000000);
721 admhcd_reg_set(ahcd, ADMHCD_REG_FMINTERVAL, 0x20002edf);
722 admhcd_reg_set(ahcd, ADMHCD_REG_LSTHRESH, 0x628);
723 admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE,
724 ADMHCD_INT_ACT | ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
725 admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS,
726 ADMHCD_INT_ACT | ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
727 admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
728 admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
730 udev = usb_alloc_dev(NULL, &hcd->self, 0);
736 udev->speed = USB_SPEED_FULL;
737 hcd->state = HC_STATE_RUNNING;
739 //err = hcd_register_root(udev, hcd);
741 // usb_put_dev(udev);
750 //usb_deregister_bus(&hcd->self);
752 free_irq(pdev->resource[1].start, hcd);
756 release_mem_region(pdev->resource[0].start,
757 pdev->resource[0].end - pdev->resource[0].start);
762 static int __init_or_module adm5120hcd_remove(struct platform_device *pdev)
764 device_init_wakeup(&pdev->dev, 0);
767 static struct platform_driver adm5120hcd_driver = {
768 .probe = adm5120hcd_probe,
769 .remove = adm5120hcd_remove,
771 .name = "adm5120-hcd",
772 .owner = THIS_MODULE,
776 static int __init adm5120hcd_init(void)
781 return platform_driver_register(&adm5120hcd_driver);
784 static void __exit adm5120hcd_exit(void)
786 platform_driver_unregister(&adm5120hcd_driver);
789 module_init(adm5120hcd_init);
790 module_exit(adm5120hcd_exit);