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usb: add support of generic OHCI devices
[people/ms/u-boot.git] / common / usb_kbd.c
CommitLineData
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>
24b852a7 11#include <console.h>
697033cb 12#include <dm.h>
0ea09dfe 13#include <errno.h>
9a8c72a6 14#include <malloc.h>
cf92e05c 15#include <memalign.h>
52cb4d4f 16#include <stdio_dev.h>
c918261c 17#include <asm/byteorder.h>
affae2bf 18
affae2bf
WD
19#include <usb.h>
20
affae2bf 21/*
00b7d6ec 22 * If overwrite_console returns 1, the stdin, stderr and stdout
affae2bf
WD
23 * are switched to the serial port, else the settings in the
24 * environment are used
25 */
6d0f6bcf 26#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
00b7d6ec 27extern int overwrite_console(void);
affae2bf 28#else
00b7d6ec 29int overwrite_console(void)
affae2bf 30{
00b7d6ec 31 return 0;
affae2bf
WD
32}
33#endif
34
9a8c72a6 35/* Keyboard sampling rate */
8454c84a 36#define REPEAT_RATE 40 /* 40msec -> 25cps */
9a8c72a6 37#define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
affae2bf
WD
38
39#define NUM_LOCK 0x53
00b7d6ec
MV
40#define CAPS_LOCK 0x39
41#define SCROLL_LOCK 0x47
affae2bf 42
affae2bf 43/* Modifier bits */
9a8c72a6
MV
44#define LEFT_CNTR (1 << 0)
45#define LEFT_SHIFT (1 << 1)
46#define LEFT_ALT (1 << 2)
47#define LEFT_GUI (1 << 3)
48#define RIGHT_CNTR (1 << 4)
49#define RIGHT_SHIFT (1 << 5)
50#define RIGHT_ALT (1 << 6)
51#define RIGHT_GUI (1 << 7)
52
53/* Size of the keyboard buffer */
54#define USB_KBD_BUFFER_LEN 0x20
55
56/* Device name */
00b7d6ec 57#define DEVNAME "usbkbd"
affae2bf 58
9a8c72a6
MV
59/* Keyboard maps */
60static const unsigned char usb_kbd_numkey[] = {
00b7d6ec
MV
61 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
62 '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']',
63 '\\', '#', ';', '\'', '`', ',', '.', '/'
affae2bf 64};
9a8c72a6 65static const unsigned char usb_kbd_numkey_shifted[] = {
00b7d6ec
MV
66 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
67 '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}',
68 '|', '~', ':', '"', '~', '<', '>', '?'
affae2bf
WD
69};
70
d53da847
VP
71static const unsigned char usb_kbd_num_keypad[] = {
72 '/', '*', '-', '+', '\r',
73 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
74 '.', 0, 0, 0, '='
75};
76
4151a400
AM
77/*
78 * map arrow keys to ^F/^B ^N/^P, can't really use the proper
79 * ANSI sequence for arrow keys because the queuing code breaks
80 * when a single keypress expands to 3 queue elements
81 */
82static const unsigned char usb_kbd_arrow[] = {
83 0x6, 0x2, 0xe, 0x10
84};
85
9a8c72a6
MV
86/*
87 * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this
88 * order. See usb_kbd_setled() function!
89 */
90#define USB_KBD_NUMLOCK (1 << 0)
91#define USB_KBD_CAPSLOCK (1 << 1)
92#define USB_KBD_SCROLLLOCK (1 << 2)
93#define USB_KBD_CTRL (1 << 3)
48c8073e 94
9a8c72a6
MV
95#define USB_KBD_LEDMASK \
96 (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
48c8073e 97
08a98b89
AC
98/*
99 * USB Keyboard reports are 8 bytes in boot protocol.
100 * Appendix B of HID Device Class Definition 1.11
101 */
102#define USB_KBD_BOOT_REPORT_SIZE 8
103
9a8c72a6 104struct usb_kbd_pdata {
8f8d7d24
HG
105 unsigned long intpipe;
106 int intpktsize;
107 int intinterval;
8454c84a 108 unsigned long last_report;
8e553119 109 struct int_queue *intq;
8f8d7d24 110
9a8c72a6 111 uint32_t repeat_delay;
affae2bf 112
9a8c72a6
MV
113 uint32_t usb_in_pointer;
114 uint32_t usb_out_pointer;
115 uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN];
48c8073e 116
d7475386 117 uint8_t *new;
08a98b89 118 uint8_t old[USB_KBD_BOOT_REPORT_SIZE];
48c8073e 119
9a8c72a6
MV
120 uint8_t flags;
121};
48c8073e 122
07551f23
JL
123extern int __maybe_unused net_busy_flag;
124
125/* The period of time between two calls of usb_kbd_testc(). */
126static unsigned long __maybe_unused kbd_testc_tms;
127
9a8c72a6
MV
128/* Puts character in the queue and sets up the in and out pointer. */
129static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c)
affae2bf 130{
9a8c72a6
MV
131 if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) {
132 /* Check for buffer full. */
133 if (data->usb_out_pointer == 0)
134 return;
affae2bf 135
9a8c72a6
MV
136 data->usb_in_pointer = 0;
137 } else {
138 /* Check for buffer full. */
139 if (data->usb_in_pointer == data->usb_out_pointer - 1)
140 return;
affae2bf 141
9a8c72a6
MV
142 data->usb_in_pointer++;
143 }
affae2bf 144
9a8c72a6 145 data->usb_kbd_buffer[data->usb_in_pointer] = c;
affae2bf
WD
146}
147
9a8c72a6
MV
148/*
149 * Set the LEDs. Since this is used in the irq routine, the control job is
150 * issued with a timeout of 0. This means, that the job is queued without
151 * waiting for job completion.
affae2bf 152 */
affae2bf
WD
153static void usb_kbd_setled(struct usb_device *dev)
154{
9a8c72a6
MV
155 struct usb_interface *iface = &dev->config.if_desc[0];
156 struct usb_kbd_pdata *data = dev->privptr;
9b239381 157 ALLOC_ALIGN_BUFFER(uint32_t, leds, 1, USB_DMA_MINALIGN);
9a8c72a6 158
9b239381 159 *leds = data->flags & USB_KBD_LEDMASK;
affae2bf
WD
160 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
161 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
9b239381 162 0x200, iface->desc.bInterfaceNumber, leds, 1, 0);
affae2bf
WD
163}
164
9a8c72a6 165#define CAPITAL_MASK 0x20
affae2bf 166/* Translate the scancode in ASCII */
9a8c72a6
MV
167static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode,
168 unsigned char modifier, int pressed)
affae2bf 169{
9a8c72a6 170 uint8_t keycode = 0;
affae2bf 171
9a8c72a6 172 /* Key released */
00b7d6ec 173 if (pressed == 0) {
9a8c72a6 174 data->repeat_delay = 0;
affae2bf
WD
175 return 0;
176 }
9a8c72a6 177
00b7d6ec 178 if (pressed == 2) {
9a8c72a6
MV
179 data->repeat_delay++;
180 if (data->repeat_delay < REPEAT_DELAY)
affae2bf 181 return 0;
9a8c72a6
MV
182
183 data->repeat_delay = REPEAT_DELAY;
affae2bf 184 }
9a8c72a6
MV
185
186 /* Alphanumeric values */
187 if ((scancode > 3) && (scancode <= 0x1d)) {
188 keycode = scancode - 4 + 'a';
189
190 if (data->flags & USB_KBD_CAPSLOCK)
00b7d6ec 191 keycode &= ~CAPITAL_MASK;
9a8c72a6
MV
192
193 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) {
194 /* Handle CAPSLock + Shift pressed simultaneously */
00b7d6ec 195 if (keycode & CAPITAL_MASK)
00b7d6ec 196 keycode &= ~CAPITAL_MASK;
affae2bf 197 else
00b7d6ec 198 keycode |= CAPITAL_MASK;
affae2bf
WD
199 }
200 }
9a8c72a6
MV
201
202 if ((scancode > 0x1d) && (scancode < 0x3a)) {
203 /* Shift pressed */
204 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT))
205 keycode = usb_kbd_numkey_shifted[scancode - 0x1e];
206 else
207 keycode = usb_kbd_numkey[scancode - 0x1e];
affae2bf 208 }
4785a694 209
4151a400
AM
210 /* Arrow keys */
211 if ((scancode >= 0x4f) && (scancode <= 0x52))
212 keycode = usb_kbd_arrow[scancode - 0x4f];
213
d53da847
VP
214 /* Numeric keypad */
215 if ((scancode >= 0x54) && (scancode <= 0x67))
216 keycode = usb_kbd_num_keypad[scancode - 0x54];
217
9a8c72a6 218 if (data->flags & USB_KBD_CTRL)
4785a694
ZW
219 keycode = scancode - 0x3;
220
00b7d6ec
MV
221 if (pressed == 1) {
222 if (scancode == NUM_LOCK) {
9a8c72a6 223 data->flags ^= USB_KBD_NUMLOCK;
affae2bf
WD
224 return 1;
225 }
9a8c72a6 226
00b7d6ec 227 if (scancode == CAPS_LOCK) {
9a8c72a6 228 data->flags ^= USB_KBD_CAPSLOCK;
affae2bf
WD
229 return 1;
230 }
00b7d6ec 231 if (scancode == SCROLL_LOCK) {
9a8c72a6 232 data->flags ^= USB_KBD_SCROLLLOCK;
affae2bf
WD
233 return 1;
234 }
235 }
9a8c72a6
MV
236
237 /* Report keycode if any */
238 if (keycode) {
ceb4972a 239 debug("%c", keycode);
9a8c72a6 240 usb_kbd_put_queue(data, keycode);
affae2bf 241 }
9a8c72a6 242
affae2bf
WD
243 return 0;
244}
245
9a8c72a6
MV
246static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up)
247{
248 uint32_t res = 0;
249 struct usb_kbd_pdata *data = dev->privptr;
250 uint8_t *new;
251 uint8_t *old;
252
253 if (up) {
254 new = data->old;
255 old = data->new;
256 } else {
257 new = data->new;
258 old = data->old;
259 }
260
08a98b89
AC
261 if ((old[i] > 3) &&
262 (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) ==
263 new + USB_KBD_BOOT_REPORT_SIZE)) {
9a8c72a6 264 res |= usb_kbd_translate(data, old[i], data->new[0], up);
08a98b89 265 }
9a8c72a6
MV
266
267 return res;
268}
269
affae2bf 270/* Interrupt service routine */
48c8073e 271static int usb_kbd_irq_worker(struct usb_device *dev)
affae2bf 272{
9a8c72a6
MV
273 struct usb_kbd_pdata *data = dev->privptr;
274 int i, res = 0;
4785a694 275
9a8c72a6
MV
276 /* No combo key pressed */
277 if (data->new[0] == 0x00)
278 data->flags &= ~USB_KBD_CTRL;
279 /* Left or Right Ctrl pressed */
280 else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR))
281 data->flags |= USB_KBD_CTRL;
00b7d6ec 282
08a98b89 283 for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) {
9a8c72a6
MV
284 res |= usb_kbd_service_key(dev, i, 0);
285 res |= usb_kbd_service_key(dev, i, 1);
affae2bf 286 }
00b7d6ec 287
9a8c72a6
MV
288 /* Key is still pressed */
289 if ((data->new[2] > 3) && (data->old[2] == data->new[2]))
290 res |= usb_kbd_translate(data, data->new[2], data->new[0], 2);
291
00b7d6ec 292 if (res == 1)
affae2bf 293 usb_kbd_setled(dev);
00b7d6ec 294
08a98b89 295 memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE);
00b7d6ec 296
9a8c72a6 297 return 1;
affae2bf
WD
298}
299
9a8c72a6 300/* Keyboard interrupt handler */
48c8073e
MV
301static int usb_kbd_irq(struct usb_device *dev)
302{
08a98b89
AC
303 if ((dev->irq_status != 0) ||
304 (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) {
ceb4972a
VG
305 debug("USB KBD: Error %lX, len %d\n",
306 dev->irq_status, dev->irq_act_len);
48c8073e
MV
307 return 1;
308 }
309
310 return usb_kbd_irq_worker(dev);
311}
312
9a8c72a6
MV
313/* Interrupt polling */
314static inline void usb_kbd_poll_for_event(struct usb_device *dev)
315{
8454c84a 316#if defined(CONFIG_SYS_USB_EVENT_POLL)
8f8d7d24 317 struct usb_kbd_pdata *data = dev->privptr;
f9636e8d
AM
318
319 /* Submit a interrupt transfer request */
8f8d7d24
HG
320 usb_submit_int_msg(dev, data->intpipe, &data->new[0], data->intpktsize,
321 data->intinterval);
f9636e8d 322
9a8c72a6 323 usb_kbd_irq_worker(dev);
8454c84a
HG
324#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) || \
325 defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE)
326#if defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
9a8c72a6
MV
327 struct usb_interface *iface;
328 struct usb_kbd_pdata *data = dev->privptr;
329 iface = &dev->config.if_desc[0];
330 usb_get_report(dev, iface->desc.bInterfaceNumber,
08a98b89 331 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE);
8454c84a 332 if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) {
9a8c72a6 333 usb_kbd_irq_worker(dev);
8454c84a 334#else
8e553119
HG
335 struct usb_kbd_pdata *data = dev->privptr;
336 if (poll_int_queue(dev, data->intq)) {
337 usb_kbd_irq_worker(dev);
338 /* We've consumed all queued int packets, create new */
339 destroy_int_queue(dev, data->intq);
340 data->intq = create_int_queue(dev, data->intpipe, 1,
8bb6c1d1
HG
341 USB_KBD_BOOT_REPORT_SIZE, data->new,
342 data->intinterval);
8454c84a
HG
343#endif
344 data->last_report = get_timer(0);
345 /* Repeat last usb hid report every REPEAT_RATE ms for keyrepeat */
346 } else if (data->last_report != -1 &&
347 get_timer(data->last_report) > REPEAT_RATE) {
348 usb_kbd_irq_worker(dev);
349 data->last_report = get_timer(0);
8e553119 350 }
9a8c72a6
MV
351#endif
352}
353
354/* test if a character is in the queue */
709ea543 355static int usb_kbd_testc(struct stdio_dev *sdev)
9a8c72a6
MV
356{
357 struct stdio_dev *dev;
358 struct usb_device *usb_kbd_dev;
359 struct usb_kbd_pdata *data;
360
c95e2b9e
JL
361#ifdef CONFIG_CMD_NET
362 /*
363 * If net_busy_flag is 1, NET transfer is running,
364 * then we check key-pressed every second (first check may be
365 * less than 1 second) to improve TFTP booting performance.
366 */
367 if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ))
368 return 0;
369 kbd_testc_tms = get_timer(0);
370#endif
9a8c72a6
MV
371 dev = stdio_get_by_name(DEVNAME);
372 usb_kbd_dev = (struct usb_device *)dev->priv;
373 data = usb_kbd_dev->privptr;
374
375 usb_kbd_poll_for_event(usb_kbd_dev);
376
377 return !(data->usb_in_pointer == data->usb_out_pointer);
378}
379
380/* gets the character from the queue */
709ea543 381static int usb_kbd_getc(struct stdio_dev *sdev)
9a8c72a6
MV
382{
383 struct stdio_dev *dev;
384 struct usb_device *usb_kbd_dev;
385 struct usb_kbd_pdata *data;
386
387 dev = stdio_get_by_name(DEVNAME);
388 usb_kbd_dev = (struct usb_device *)dev->priv;
389 data = usb_kbd_dev->privptr;
390
391 while (data->usb_in_pointer == data->usb_out_pointer)
392 usb_kbd_poll_for_event(usb_kbd_dev);
393
394 if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1)
395 data->usb_out_pointer = 0;
396 else
397 data->usb_out_pointer++;
398
399 return data->usb_kbd_buffer[data->usb_out_pointer];
400}
401
402/* probes the USB device dev for keyboard type. */
34ab37ee 403static int usb_kbd_probe_dev(struct usb_device *dev, unsigned int ifnum)
affae2bf 404{
8f8bd565 405 struct usb_interface *iface;
affae2bf 406 struct usb_endpoint_descriptor *ep;
9a8c72a6 407 struct usb_kbd_pdata *data;
affae2bf 408
00b7d6ec
MV
409 if (dev->descriptor.bNumConfigurations != 1)
410 return 0;
9a8c72a6 411
affae2bf
WD
412 iface = &dev->config.if_desc[ifnum];
413
2cdb58eb 414 if (iface->desc.bInterfaceClass != USB_CLASS_HID)
8f8bd565 415 return 0;
9a8c72a6 416
2cdb58eb 417 if (iface->desc.bInterfaceSubClass != USB_SUB_HID_BOOT)
8f8bd565 418 return 0;
9a8c72a6 419
2cdb58eb 420 if (iface->desc.bInterfaceProtocol != USB_PROT_HID_KEYBOARD)
8f8bd565 421 return 0;
9a8c72a6 422
8f8bd565
TR
423 if (iface->desc.bNumEndpoints != 1)
424 return 0;
affae2bf
WD
425
426 ep = &iface->ep_desc[0];
427
9a8c72a6 428 /* Check if endpoint 1 is interrupt endpoint */
00b7d6ec
MV
429 if (!(ep->bEndpointAddress & 0x80))
430 return 0;
9a8c72a6 431
00b7d6ec
MV
432 if ((ep->bmAttributes & 3) != 3)
433 return 0;
9a8c72a6 434
ceb4972a 435 debug("USB KBD: found set protocol...\n");
9a8c72a6
MV
436
437 data = malloc(sizeof(struct usb_kbd_pdata));
438 if (!data) {
439 printf("USB KBD: Error allocating private data\n");
440 return 0;
441 }
442
443 /* Clear private data */
444 memset(data, 0, sizeof(struct usb_kbd_pdata));
445
d7475386 446 /* allocate input buffer aligned and sized to USB DMA alignment */
08a98b89
AC
447 data->new = memalign(USB_DMA_MINALIGN,
448 roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN));
d7475386 449
9a8c72a6
MV
450 /* Insert private data into USB device structure */
451 dev->privptr = data;
452
453 /* Set IRQ handler */
454 dev->irq_handle = usb_kbd_irq;
455
8f8d7d24
HG
456 data->intpipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
457 data->intpktsize = min(usb_maxpacket(dev, data->intpipe),
458 USB_KBD_BOOT_REPORT_SIZE);
459 data->intinterval = ep->bInterval;
8454c84a 460 data->last_report = -1;
9a8c72a6
MV
461
462 /* We found a USB Keyboard, install it. */
463 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
464
de451493 465 debug("USB KBD: found set idle...\n");
8454c84a
HG
466#if !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) && \
467 !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE)
8454c84a 468 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE / 4, 0);
de451493
HG
469#else
470 usb_set_idle(dev, iface->desc.bInterfaceNumber, 0, 0);
8454c84a 471#endif
9a8c72a6 472
ceb4972a 473 debug("USB KBD: enable interrupt pipe...\n");
8e553119
HG
474#ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
475 data->intq = create_int_queue(dev, data->intpipe, 1,
8bb6c1d1
HG
476 USB_KBD_BOOT_REPORT_SIZE, data->new,
477 data->intinterval);
8e553119
HG
478 if (!data->intq) {
479#else
8f8d7d24
HG
480 if (usb_submit_int_msg(dev, data->intpipe, data->new, data->intpktsize,
481 data->intinterval) < 0) {
8e553119 482#endif
5da2dc97
VP
483 printf("Failed to get keyboard state from device %04x:%04x\n",
484 dev->descriptor.idVendor, dev->descriptor.idProduct);
485 /* Abort, we don't want to use that non-functional keyboard. */
486 return 0;
487 }
9a8c72a6
MV
488
489 /* Success. */
affae2bf
WD
490 return 1;
491}
492
603afaf0
SG
493static int probe_usb_keyboard(struct usb_device *dev)
494{
495 char *stdinname;
496 struct stdio_dev usb_kbd_dev;
497 int error;
498
499 /* Try probing the keyboard */
34ab37ee 500 if (usb_kbd_probe_dev(dev, 0) != 1)
603afaf0
SG
501 return -ENOENT;
502
503 /* Register the keyboard */
504 debug("USB KBD: register.\n");
505 memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
506 strcpy(usb_kbd_dev.name, DEVNAME);
1caf934a 507 usb_kbd_dev.flags = DEV_FLAGS_INPUT;
603afaf0
SG
508 usb_kbd_dev.getc = usb_kbd_getc;
509 usb_kbd_dev.tstc = usb_kbd_testc;
510 usb_kbd_dev.priv = (void *)dev;
511 error = stdio_register(&usb_kbd_dev);
512 if (error)
513 return error;
514
515 stdinname = getenv("stdin");
516#ifdef CONFIG_CONSOLE_MUX
517 error = iomux_doenv(stdin, stdinname);
518 if (error)
519 return error;
520#else
521 /* Check if this is the standard input device. */
522 if (strcmp(stdinname, DEVNAME))
523 return 1;
524
525 /* Reassign the console */
526 if (overwrite_console())
527 return 1;
528
529 error = console_assign(stdin, DEVNAME);
530 if (error)
531 return error;
532#endif
533
534 return 0;
535}
536
34ab37ee 537#ifndef CONFIG_DM_USB
9a8c72a6
MV
538/* Search for keyboard and register it if found. */
539int drv_usb_kbd_init(void)
540{
9a8c72a6
MV
541 int error, i;
542
697033cb 543 debug("%s: Probing for keyboard\n", __func__);
697033cb 544 /* Scan all USB Devices */
9a8c72a6 545 for (i = 0; i < USB_MAX_DEVICE; i++) {
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546 struct usb_device *dev;
547
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548 /* Get USB device. */
549 dev = usb_get_dev_index(i);
550 if (!dev)
603afaf0 551 break;
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552
553 if (dev->devnum == -1)
554 continue;
555
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556 error = probe_usb_keyboard(dev);
557 if (!error)
9a8c72a6 558 return 1;
603afaf0 559 if (error && error != -ENOENT)
9a8c72a6 560 return error;
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561 }
562
563 /* No USB Keyboard found */
564 return -1;
565}
34ab37ee 566#endif
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567
568/* Deregister the keyboard. */
8a8a2257 569int usb_kbd_deregister(int force)
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570{
571#ifdef CONFIG_SYS_STDIO_DEREGISTER
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572 struct stdio_dev *dev;
573 struct usb_device *usb_kbd_dev;
574 struct usb_kbd_pdata *data;
575
576 dev = stdio_get_by_name(DEVNAME);
577 if (dev) {
578 usb_kbd_dev = (struct usb_device *)dev->priv;
579 data = usb_kbd_dev->privptr;
580 if (stdio_deregister_dev(dev, force) != 0)
581 return 1;
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582#ifdef CONFIG_CONSOLE_MUX
583 if (iomux_doenv(stdin, getenv("stdin")) != 0)
584 return 1;
585#endif
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586#ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
587 destroy_int_queue(usb_kbd_dev, data->intq);
588#endif
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589 free(data->new);
590 free(data);
591 }
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592
593 return 0;
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594#else
595 return 1;
596#endif
597}
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598
599#ifdef CONFIG_DM_USB
600
601static int usb_kbd_probe(struct udevice *dev)
602{
603 struct usb_device *udev = dev_get_parent_priv(dev);
604 int ret;
605
606 ret = probe_usb_keyboard(udev);
607
608 return ret;
609}
610
611static const struct udevice_id usb_kbd_ids[] = {
612 { .compatible = "usb-keyboard" },
613 { }
614};
615
616U_BOOT_DRIVER(usb_kbd) = {
617 .name = "usb_kbd",
618 .id = UCLASS_KEYBOARD,
619 .of_match = usb_kbd_ids,
620 .probe = usb_kbd_probe,
621};
622
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623static const struct usb_device_id kbd_id_table[] = {
624 {
625 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
626 USB_DEVICE_ID_MATCH_INT_SUBCLASS |
627 USB_DEVICE_ID_MATCH_INT_PROTOCOL,
628 .bInterfaceClass = USB_CLASS_HID,
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629 .bInterfaceSubClass = USB_SUB_HID_BOOT,
630 .bInterfaceProtocol = USB_PROT_HID_KEYBOARD,
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631 },
632 { } /* Terminating entry */
633};
634
635U_BOOT_USB_DEVICE(usb_kbd, kbd_id_table);
636
637#endif