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affae2bf
WD
1/*
2 * (C) Copyright 2001
3 * Denis Peter, MPL AG Switzerland
4 *
5 * Part of this source has been derived from the Linux USB
6 * project.
7 *
1a459660 8 * SPDX-License-Identifier: GPL-2.0+
affae2bf
WD
9 */
10#include <common.h>
697033cb 11#include <dm.h>
0ea09dfe 12#include <errno.h>
9a8c72a6 13#include <malloc.h>
cf92e05c 14#include <memalign.h>
52cb4d4f 15#include <stdio_dev.h>
c918261c 16#include <asm/byteorder.h>
affae2bf 17
affae2bf
WD
18#include <usb.h>
19
affae2bf 20/*
00b7d6ec 21 * If overwrite_console returns 1, the stdin, stderr and stdout
affae2bf
WD
22 * are switched to the serial port, else the settings in the
23 * environment are used
24 */
6d0f6bcf 25#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
00b7d6ec 26extern int overwrite_console(void);
affae2bf 27#else
00b7d6ec 28int overwrite_console(void)
affae2bf 29{
00b7d6ec 30 return 0;
affae2bf
WD
31}
32#endif
33
9a8c72a6 34/* Keyboard sampling rate */
8454c84a 35#define REPEAT_RATE 40 /* 40msec -> 25cps */
9a8c72a6 36#define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
affae2bf
WD
37
38#define NUM_LOCK 0x53
00b7d6ec
MV
39#define CAPS_LOCK 0x39
40#define SCROLL_LOCK 0x47
affae2bf 41
affae2bf 42/* Modifier bits */
9a8c72a6
MV
43#define LEFT_CNTR (1 << 0)
44#define LEFT_SHIFT (1 << 1)
45#define LEFT_ALT (1 << 2)
46#define LEFT_GUI (1 << 3)
47#define RIGHT_CNTR (1 << 4)
48#define RIGHT_SHIFT (1 << 5)
49#define RIGHT_ALT (1 << 6)
50#define RIGHT_GUI (1 << 7)
51
52/* Size of the keyboard buffer */
53#define USB_KBD_BUFFER_LEN 0x20
54
55/* Device name */
00b7d6ec 56#define DEVNAME "usbkbd"
affae2bf 57
9a8c72a6
MV
58/* Keyboard maps */
59static const unsigned char usb_kbd_numkey[] = {
00b7d6ec
MV
60 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
61 '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']',
62 '\\', '#', ';', '\'', '`', ',', '.', '/'
affae2bf 63};
9a8c72a6 64static const unsigned char usb_kbd_numkey_shifted[] = {
00b7d6ec
MV
65 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
66 '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}',
67 '|', '~', ':', '"', '~', '<', '>', '?'
affae2bf
WD
68};
69
d53da847
VP
70static const unsigned char usb_kbd_num_keypad[] = {
71 '/', '*', '-', '+', '\r',
72 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
73 '.', 0, 0, 0, '='
74};
75
4151a400
AM
76/*
77 * map arrow keys to ^F/^B ^N/^P, can't really use the proper
78 * ANSI sequence for arrow keys because the queuing code breaks
79 * when a single keypress expands to 3 queue elements
80 */
81static const unsigned char usb_kbd_arrow[] = {
82 0x6, 0x2, 0xe, 0x10
83};
84
9a8c72a6
MV
85/*
86 * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this
87 * order. See usb_kbd_setled() function!
88 */
89#define USB_KBD_NUMLOCK (1 << 0)
90#define USB_KBD_CAPSLOCK (1 << 1)
91#define USB_KBD_SCROLLLOCK (1 << 2)
92#define USB_KBD_CTRL (1 << 3)
48c8073e 93
9a8c72a6
MV
94#define USB_KBD_LEDMASK \
95 (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
48c8073e 96
08a98b89
AC
97/*
98 * USB Keyboard reports are 8 bytes in boot protocol.
99 * Appendix B of HID Device Class Definition 1.11
100 */
101#define USB_KBD_BOOT_REPORT_SIZE 8
102
9a8c72a6 103struct usb_kbd_pdata {
8f8d7d24
HG
104 unsigned long intpipe;
105 int intpktsize;
106 int intinterval;
8454c84a 107 unsigned long last_report;
8e553119 108 struct int_queue *intq;
8f8d7d24 109
9a8c72a6 110 uint32_t repeat_delay;
affae2bf 111
9a8c72a6
MV
112 uint32_t usb_in_pointer;
113 uint32_t usb_out_pointer;
114 uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN];
48c8073e 115
d7475386 116 uint8_t *new;
08a98b89 117 uint8_t old[USB_KBD_BOOT_REPORT_SIZE];
48c8073e 118
9a8c72a6
MV
119 uint8_t flags;
120};
48c8073e 121
07551f23
JL
122extern int __maybe_unused net_busy_flag;
123
124/* The period of time between two calls of usb_kbd_testc(). */
125static unsigned long __maybe_unused kbd_testc_tms;
126
9a8c72a6
MV
127/* Puts character in the queue and sets up the in and out pointer. */
128static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c)
affae2bf 129{
9a8c72a6
MV
130 if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) {
131 /* Check for buffer full. */
132 if (data->usb_out_pointer == 0)
133 return;
affae2bf 134
9a8c72a6
MV
135 data->usb_in_pointer = 0;
136 } else {
137 /* Check for buffer full. */
138 if (data->usb_in_pointer == data->usb_out_pointer - 1)
139 return;
affae2bf 140
9a8c72a6
MV
141 data->usb_in_pointer++;
142 }
affae2bf 143
9a8c72a6 144 data->usb_kbd_buffer[data->usb_in_pointer] = c;
affae2bf
WD
145}
146
9a8c72a6
MV
147/*
148 * Set the LEDs. Since this is used in the irq routine, the control job is
149 * issued with a timeout of 0. This means, that the job is queued without
150 * waiting for job completion.
affae2bf 151 */
affae2bf
WD
152static void usb_kbd_setled(struct usb_device *dev)
153{
9a8c72a6
MV
154 struct usb_interface *iface = &dev->config.if_desc[0];
155 struct usb_kbd_pdata *data = dev->privptr;
9b239381 156 ALLOC_ALIGN_BUFFER(uint32_t, leds, 1, USB_DMA_MINALIGN);
9a8c72a6 157
9b239381 158 *leds = data->flags & USB_KBD_LEDMASK;
affae2bf
WD
159 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
160 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
9b239381 161 0x200, iface->desc.bInterfaceNumber, leds, 1, 0);
affae2bf
WD
162}
163
9a8c72a6 164#define CAPITAL_MASK 0x20
affae2bf 165/* Translate the scancode in ASCII */
9a8c72a6
MV
166static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode,
167 unsigned char modifier, int pressed)
affae2bf 168{
9a8c72a6 169 uint8_t keycode = 0;
affae2bf 170
9a8c72a6 171 /* Key released */
00b7d6ec 172 if (pressed == 0) {
9a8c72a6 173 data->repeat_delay = 0;
affae2bf
WD
174 return 0;
175 }
9a8c72a6 176
00b7d6ec 177 if (pressed == 2) {
9a8c72a6
MV
178 data->repeat_delay++;
179 if (data->repeat_delay < REPEAT_DELAY)
affae2bf 180 return 0;
9a8c72a6
MV
181
182 data->repeat_delay = REPEAT_DELAY;
affae2bf 183 }
9a8c72a6
MV
184
185 /* Alphanumeric values */
186 if ((scancode > 3) && (scancode <= 0x1d)) {
187 keycode = scancode - 4 + 'a';
188
189 if (data->flags & USB_KBD_CAPSLOCK)
00b7d6ec 190 keycode &= ~CAPITAL_MASK;
9a8c72a6
MV
191
192 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) {
193 /* Handle CAPSLock + Shift pressed simultaneously */
00b7d6ec 194 if (keycode & CAPITAL_MASK)
00b7d6ec 195 keycode &= ~CAPITAL_MASK;
affae2bf 196 else
00b7d6ec 197 keycode |= CAPITAL_MASK;
affae2bf
WD
198 }
199 }
9a8c72a6
MV
200
201 if ((scancode > 0x1d) && (scancode < 0x3a)) {
202 /* Shift pressed */
203 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT))
204 keycode = usb_kbd_numkey_shifted[scancode - 0x1e];
205 else
206 keycode = usb_kbd_numkey[scancode - 0x1e];
affae2bf 207 }
4785a694 208
4151a400
AM
209 /* Arrow keys */
210 if ((scancode >= 0x4f) && (scancode <= 0x52))
211 keycode = usb_kbd_arrow[scancode - 0x4f];
212
d53da847
VP
213 /* Numeric keypad */
214 if ((scancode >= 0x54) && (scancode <= 0x67))
215 keycode = usb_kbd_num_keypad[scancode - 0x54];
216
9a8c72a6 217 if (data->flags & USB_KBD_CTRL)
4785a694
ZW
218 keycode = scancode - 0x3;
219
00b7d6ec
MV
220 if (pressed == 1) {
221 if (scancode == NUM_LOCK) {
9a8c72a6 222 data->flags ^= USB_KBD_NUMLOCK;
affae2bf
WD
223 return 1;
224 }
9a8c72a6 225
00b7d6ec 226 if (scancode == CAPS_LOCK) {
9a8c72a6 227 data->flags ^= USB_KBD_CAPSLOCK;
affae2bf
WD
228 return 1;
229 }
00b7d6ec 230 if (scancode == SCROLL_LOCK) {
9a8c72a6 231 data->flags ^= USB_KBD_SCROLLLOCK;
affae2bf
WD
232 return 1;
233 }
234 }
9a8c72a6
MV
235
236 /* Report keycode if any */
237 if (keycode) {
ceb4972a 238 debug("%c", keycode);
9a8c72a6 239 usb_kbd_put_queue(data, keycode);
affae2bf 240 }
9a8c72a6 241
affae2bf
WD
242 return 0;
243}
244
9a8c72a6
MV
245static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up)
246{
247 uint32_t res = 0;
248 struct usb_kbd_pdata *data = dev->privptr;
249 uint8_t *new;
250 uint8_t *old;
251
252 if (up) {
253 new = data->old;
254 old = data->new;
255 } else {
256 new = data->new;
257 old = data->old;
258 }
259
08a98b89
AC
260 if ((old[i] > 3) &&
261 (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) ==
262 new + USB_KBD_BOOT_REPORT_SIZE)) {
9a8c72a6 263 res |= usb_kbd_translate(data, old[i], data->new[0], up);
08a98b89 264 }
9a8c72a6
MV
265
266 return res;
267}
268
affae2bf 269/* Interrupt service routine */
48c8073e 270static int usb_kbd_irq_worker(struct usb_device *dev)
affae2bf 271{
9a8c72a6
MV
272 struct usb_kbd_pdata *data = dev->privptr;
273 int i, res = 0;
4785a694 274
9a8c72a6
MV
275 /* No combo key pressed */
276 if (data->new[0] == 0x00)
277 data->flags &= ~USB_KBD_CTRL;
278 /* Left or Right Ctrl pressed */
279 else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR))
280 data->flags |= USB_KBD_CTRL;
00b7d6ec 281
08a98b89 282 for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) {
9a8c72a6
MV
283 res |= usb_kbd_service_key(dev, i, 0);
284 res |= usb_kbd_service_key(dev, i, 1);
affae2bf 285 }
00b7d6ec 286
9a8c72a6
MV
287 /* Key is still pressed */
288 if ((data->new[2] > 3) && (data->old[2] == data->new[2]))
289 res |= usb_kbd_translate(data, data->new[2], data->new[0], 2);
290
00b7d6ec 291 if (res == 1)
affae2bf 292 usb_kbd_setled(dev);
00b7d6ec 293
08a98b89 294 memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE);
00b7d6ec 295
9a8c72a6 296 return 1;
affae2bf
WD
297}
298
9a8c72a6 299/* Keyboard interrupt handler */
48c8073e
MV
300static int usb_kbd_irq(struct usb_device *dev)
301{
08a98b89
AC
302 if ((dev->irq_status != 0) ||
303 (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) {
ceb4972a
VG
304 debug("USB KBD: Error %lX, len %d\n",
305 dev->irq_status, dev->irq_act_len);
48c8073e
MV
306 return 1;
307 }
308
309 return usb_kbd_irq_worker(dev);
310}
311
9a8c72a6
MV
312/* Interrupt polling */
313static inline void usb_kbd_poll_for_event(struct usb_device *dev)
314{
8454c84a 315#if defined(CONFIG_SYS_USB_EVENT_POLL)
8f8d7d24 316 struct usb_kbd_pdata *data = dev->privptr;
f9636e8d
AM
317
318 /* Submit a interrupt transfer request */
8f8d7d24
HG
319 usb_submit_int_msg(dev, data->intpipe, &data->new[0], data->intpktsize,
320 data->intinterval);
f9636e8d 321
9a8c72a6 322 usb_kbd_irq_worker(dev);
8454c84a
HG
323#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) || \
324 defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE)
325#if defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
9a8c72a6
MV
326 struct usb_interface *iface;
327 struct usb_kbd_pdata *data = dev->privptr;
328 iface = &dev->config.if_desc[0];
329 usb_get_report(dev, iface->desc.bInterfaceNumber,
08a98b89 330 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE);
8454c84a 331 if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) {
9a8c72a6 332 usb_kbd_irq_worker(dev);
8454c84a 333#else
8e553119
HG
334 struct usb_kbd_pdata *data = dev->privptr;
335 if (poll_int_queue(dev, data->intq)) {
336 usb_kbd_irq_worker(dev);
337 /* We've consumed all queued int packets, create new */
338 destroy_int_queue(dev, data->intq);
339 data->intq = create_int_queue(dev, data->intpipe, 1,
8bb6c1d1
HG
340 USB_KBD_BOOT_REPORT_SIZE, data->new,
341 data->intinterval);
8454c84a
HG
342#endif
343 data->last_report = get_timer(0);
344 /* Repeat last usb hid report every REPEAT_RATE ms for keyrepeat */
345 } else if (data->last_report != -1 &&
346 get_timer(data->last_report) > REPEAT_RATE) {
347 usb_kbd_irq_worker(dev);
348 data->last_report = get_timer(0);
8e553119 349 }
9a8c72a6
MV
350#endif
351}
352
353/* test if a character is in the queue */
709ea543 354static int usb_kbd_testc(struct stdio_dev *sdev)
9a8c72a6
MV
355{
356 struct stdio_dev *dev;
357 struct usb_device *usb_kbd_dev;
358 struct usb_kbd_pdata *data;
359
c95e2b9e
JL
360#ifdef CONFIG_CMD_NET
361 /*
362 * If net_busy_flag is 1, NET transfer is running,
363 * then we check key-pressed every second (first check may be
364 * less than 1 second) to improve TFTP booting performance.
365 */
366 if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ))
367 return 0;
368 kbd_testc_tms = get_timer(0);
369#endif
9a8c72a6
MV
370 dev = stdio_get_by_name(DEVNAME);
371 usb_kbd_dev = (struct usb_device *)dev->priv;
372 data = usb_kbd_dev->privptr;
373
374 usb_kbd_poll_for_event(usb_kbd_dev);
375
376 return !(data->usb_in_pointer == data->usb_out_pointer);
377}
378
379/* gets the character from the queue */
709ea543 380static int usb_kbd_getc(struct stdio_dev *sdev)
9a8c72a6
MV
381{
382 struct stdio_dev *dev;
383 struct usb_device *usb_kbd_dev;
384 struct usb_kbd_pdata *data;
385
386 dev = stdio_get_by_name(DEVNAME);
387 usb_kbd_dev = (struct usb_device *)dev->priv;
388 data = usb_kbd_dev->privptr;
389
390 while (data->usb_in_pointer == data->usb_out_pointer)
391 usb_kbd_poll_for_event(usb_kbd_dev);
392
393 if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1)
394 data->usb_out_pointer = 0;
395 else
396 data->usb_out_pointer++;
397
398 return data->usb_kbd_buffer[data->usb_out_pointer];
399}
400
401/* probes the USB device dev for keyboard type. */
affae2bf
WD
402static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
403{
8f8bd565 404 struct usb_interface *iface;
affae2bf 405 struct usb_endpoint_descriptor *ep;
9a8c72a6 406 struct usb_kbd_pdata *data;
affae2bf 407
00b7d6ec
MV
408 if (dev->descriptor.bNumConfigurations != 1)
409 return 0;
9a8c72a6 410
affae2bf
WD
411 iface = &dev->config.if_desc[ifnum];
412
8f8bd565
TR
413 if (iface->desc.bInterfaceClass != 3)
414 return 0;
9a8c72a6 415
8f8bd565
TR
416 if (iface->desc.bInterfaceSubClass != 1)
417 return 0;
9a8c72a6 418
8f8bd565
TR
419 if (iface->desc.bInterfaceProtocol != 1)
420 return 0;
9a8c72a6 421
8f8bd565
TR
422 if (iface->desc.bNumEndpoints != 1)
423 return 0;
affae2bf
WD
424
425 ep = &iface->ep_desc[0];
426
9a8c72a6 427 /* Check if endpoint 1 is interrupt endpoint */
00b7d6ec
MV
428 if (!(ep->bEndpointAddress & 0x80))
429 return 0;
9a8c72a6 430
00b7d6ec
MV
431 if ((ep->bmAttributes & 3) != 3)
432 return 0;
9a8c72a6 433
ceb4972a 434 debug("USB KBD: found set protocol...\n");
9a8c72a6
MV
435
436 data = malloc(sizeof(struct usb_kbd_pdata));
437 if (!data) {
438 printf("USB KBD: Error allocating private data\n");
439 return 0;
440 }
441
442 /* Clear private data */
443 memset(data, 0, sizeof(struct usb_kbd_pdata));
444
d7475386 445 /* allocate input buffer aligned and sized to USB DMA alignment */
08a98b89
AC
446 data->new = memalign(USB_DMA_MINALIGN,
447 roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN));
d7475386 448
9a8c72a6
MV
449 /* Insert private data into USB device structure */
450 dev->privptr = data;
451
452 /* Set IRQ handler */
453 dev->irq_handle = usb_kbd_irq;
454
8f8d7d24
HG
455 data->intpipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
456 data->intpktsize = min(usb_maxpacket(dev, data->intpipe),
457 USB_KBD_BOOT_REPORT_SIZE);
458 data->intinterval = ep->bInterval;
8454c84a 459 data->last_report = -1;
9a8c72a6
MV
460
461 /* We found a USB Keyboard, install it. */
462 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
463
de451493 464 debug("USB KBD: found set idle...\n");
8454c84a
HG
465#if !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) && \
466 !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE)
8454c84a 467 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE / 4, 0);
de451493
HG
468#else
469 usb_set_idle(dev, iface->desc.bInterfaceNumber, 0, 0);
8454c84a 470#endif
9a8c72a6 471
ceb4972a 472 debug("USB KBD: enable interrupt pipe...\n");
8e553119
HG
473#ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
474 data->intq = create_int_queue(dev, data->intpipe, 1,
8bb6c1d1
HG
475 USB_KBD_BOOT_REPORT_SIZE, data->new,
476 data->intinterval);
8e553119
HG
477 if (!data->intq) {
478#else
8f8d7d24
HG
479 if (usb_submit_int_msg(dev, data->intpipe, data->new, data->intpktsize,
480 data->intinterval) < 0) {
8e553119 481#endif
5da2dc97
VP
482 printf("Failed to get keyboard state from device %04x:%04x\n",
483 dev->descriptor.idVendor, dev->descriptor.idProduct);
484 /* Abort, we don't want to use that non-functional keyboard. */
485 return 0;
486 }
9a8c72a6
MV
487
488 /* Success. */
affae2bf
WD
489 return 1;
490}
491
603afaf0
SG
492static int probe_usb_keyboard(struct usb_device *dev)
493{
494 char *stdinname;
495 struct stdio_dev usb_kbd_dev;
496 int error;
497
498 /* Try probing the keyboard */
499 if (usb_kbd_probe(dev, 0) != 1)
500 return -ENOENT;
501
502 /* Register the keyboard */
503 debug("USB KBD: register.\n");
504 memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
505 strcpy(usb_kbd_dev.name, DEVNAME);
1caf934a 506 usb_kbd_dev.flags = DEV_FLAGS_INPUT;
603afaf0
SG
507 usb_kbd_dev.getc = usb_kbd_getc;
508 usb_kbd_dev.tstc = usb_kbd_testc;
509 usb_kbd_dev.priv = (void *)dev;
510 error = stdio_register(&usb_kbd_dev);
511 if (error)
512 return error;
513
514 stdinname = getenv("stdin");
515#ifdef CONFIG_CONSOLE_MUX
516 error = iomux_doenv(stdin, stdinname);
517 if (error)
518 return error;
519#else
520 /* Check if this is the standard input device. */
521 if (strcmp(stdinname, DEVNAME))
522 return 1;
523
524 /* Reassign the console */
525 if (overwrite_console())
526 return 1;
527
528 error = console_assign(stdin, DEVNAME);
529 if (error)
530 return error;
531#endif
532
533 return 0;
534}
535
9a8c72a6
MV
536/* Search for keyboard and register it if found. */
537int drv_usb_kbd_init(void)
538{
9a8c72a6
MV
539 int error, i;
540
697033cb
SG
541 debug("%s: Probing for keyboard\n", __func__);
542#ifdef CONFIG_DM_USB
543 /*
abb59cff
SG
544 * TODO: We should add U_BOOT_USB_DEVICE() declarations to each USB
545 * keyboard driver and then most of this file can be removed.
697033cb
SG
546 */
547 struct udevice *bus;
548 struct uclass *uc;
549 int ret;
550
551 ret = uclass_get(UCLASS_USB, &uc);
552 if (ret)
553 return ret;
554 uclass_foreach_dev(bus, uc) {
555 for (i = 0; i < USB_MAX_DEVICE; i++) {
556 struct usb_device *dev;
557
558 dev = usb_get_dev_index(bus, i); /* get device */
559 debug("i=%d, %p\n", i, dev);
560 if (!dev)
561 break; /* no more devices available */
562
563 error = probe_usb_keyboard(dev);
564 if (!error)
565 return 1;
566 if (error && error != -ENOENT)
567 return error;
568 } /* for */
569 }
570#else
571 /* Scan all USB Devices */
9a8c72a6 572 for (i = 0; i < USB_MAX_DEVICE; i++) {
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573 struct usb_device *dev;
574
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575 /* Get USB device. */
576 dev = usb_get_dev_index(i);
577 if (!dev)
603afaf0 578 break;
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579
580 if (dev->devnum == -1)
581 continue;
582
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583 error = probe_usb_keyboard(dev);
584 if (!error)
9a8c72a6 585 return 1;
603afaf0 586 if (error && error != -ENOENT)
9a8c72a6 587 return error;
9a8c72a6 588 }
697033cb 589#endif
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590
591 /* No USB Keyboard found */
592 return -1;
593}
594
595/* Deregister the keyboard. */
8a8a2257 596int usb_kbd_deregister(int force)
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597{
598#ifdef CONFIG_SYS_STDIO_DEREGISTER
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599 struct stdio_dev *dev;
600 struct usb_device *usb_kbd_dev;
601 struct usb_kbd_pdata *data;
602
603 dev = stdio_get_by_name(DEVNAME);
604 if (dev) {
605 usb_kbd_dev = (struct usb_device *)dev->priv;
606 data = usb_kbd_dev->privptr;
607 if (stdio_deregister_dev(dev, force) != 0)
608 return 1;
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609#ifdef CONFIG_CONSOLE_MUX
610 if (iomux_doenv(stdin, getenv("stdin")) != 0)
611 return 1;
612#endif
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613#ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
614 destroy_int_queue(usb_kbd_dev, data->intq);
615#endif
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616 free(data->new);
617 free(data);
618 }
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619
620 return 0;
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621#else
622 return 1;
623#endif
624}