1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2001
4 * Denis Peter, MPL AG Switzerland
5 *
6 * Part of this source has been derived from the Linux USB
7 * project.
8 */
9 #include <common.h>
10 #include <console.h>
11 #include <dm.h>
12 #include <env.h>
13 #include <errno.h>
14 #include <log.h>
15 #include <malloc.h>
16 #include <memalign.h>
17 #include <stdio_dev.h>
18 #include <watchdog.h>
19 #include <asm/byteorder.h>
20 #ifdef CONFIG_SANDBOX
21 #include <asm/state.h>
22 #endif
23
24 #include <usb.h>
25
26 /*
27 * If overwrite_console returns 1, the stdin, stderr and stdout
28 * are switched to the serial port, else the settings in the
29 * environment are used
30 */
31 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
32 extern int overwrite_console(void);
33 #else
overwrite_console(void)34 int overwrite_console(void)
35 {
36 return 0;
37 }
38 #endif
39
40 /* Keyboard sampling rate */
41 #define REPEAT_RATE 40 /* 40msec -> 25cps */
42 #define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
43
44 #define NUM_LOCK 0x53
45 #define CAPS_LOCK 0x39
46 #define SCROLL_LOCK 0x47
47
48 /* Modifier bits */
49 #define LEFT_CNTR (1 << 0)
50 #define LEFT_SHIFT (1 << 1)
51 #define LEFT_ALT (1 << 2)
52 #define LEFT_GUI (1 << 3)
53 #define RIGHT_CNTR (1 << 4)
54 #define RIGHT_SHIFT (1 << 5)
55 #define RIGHT_ALT (1 << 6)
56 #define RIGHT_GUI (1 << 7)
57
58 /* Size of the keyboard buffer */
59 #define USB_KBD_BUFFER_LEN 0x20
60
61 /* Device name */
62 #define DEVNAME "usbkbd"
63
64 /* Keyboard maps */
65 static const unsigned char usb_kbd_numkey[] = {
66 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
67 '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']',
68 '\\', '#', ';', '\'', '`', ',', '.', '/'
69 };
70 static const unsigned char usb_kbd_numkey_shifted[] = {
71 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
72 '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}',
73 '|', '~', ':', '"', '~', '<', '>', '?'
74 };
75
76 static const unsigned char usb_kbd_num_keypad[] = {
77 '/', '*', '-', '+', '\r',
78 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
79 '.', 0, 0, 0, '='
80 };
81
82 static const u8 usb_special_keys[] = {
83 #ifdef CONFIG_USB_KEYBOARD_FN_KEYS
84 '2', 'H', '5', '3', 'F', '6', 'C', 'D', 'B', 'A'
85 #else
86 'C', 'D', 'B', 'A'
87 #endif
88 };
89
90 /*
91 * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this
92 * order. See usb_kbd_setled() function!
93 */
94 #define USB_KBD_NUMLOCK (1 << 0)
95 #define USB_KBD_CAPSLOCK (1 << 1)
96 #define USB_KBD_SCROLLLOCK (1 << 2)
97 #define USB_KBD_CTRL (1 << 3)
98
99 #define USB_KBD_LEDMASK \
100 (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
101
102 struct usb_kbd_pdata {
103 unsigned long intpipe;
104 int intpktsize;
105 int intinterval;
106 unsigned long last_report;
107 struct int_queue *intq;
108
109 uint32_t repeat_delay;
110
111 uint32_t usb_in_pointer;
112 uint32_t usb_out_pointer;
113 uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN];
114
115 uint8_t *new;
116 uint8_t old[USB_KBD_BOOT_REPORT_SIZE];
117
118 uint8_t flags;
119 };
120
121 extern int __maybe_unused net_busy_flag;
122
123 /* The period of time between two calls of usb_kbd_testc(). */
124 static unsigned long kbd_testc_tms;
125
126 /* Puts character in the queue and sets up the in and out pointer. */
usb_kbd_put_queue(struct usb_kbd_pdata * data,u8 c)127 static void usb_kbd_put_queue(struct usb_kbd_pdata *data, u8 c)
128 {
129 if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) {
130 /* Check for buffer full. */
131 if (data->usb_out_pointer == 0)
132 return;
133
134 data->usb_in_pointer = 0;
135 } else {
136 /* Check for buffer full. */
137 if (data->usb_in_pointer == data->usb_out_pointer - 1)
138 return;
139
140 data->usb_in_pointer++;
141 }
142
143 data->usb_kbd_buffer[data->usb_in_pointer] = c;
144 }
145
146 /*
147 * Set the LEDs. Since this is used in the irq routine, the control job is
148 * issued with a timeout of 0. This means, that the job is queued without
149 * waiting for job completion.
150 */
usb_kbd_setled(struct usb_device * dev)151 static void usb_kbd_setled(struct usb_device *dev)
152 {
153 struct usb_interface *iface = &dev->config.if_desc[0];
154 struct usb_kbd_pdata *data = dev->privptr;
155 ALLOC_ALIGN_BUFFER(uint32_t, leds, 1, USB_DMA_MINALIGN);
156
157 *leds = data->flags & USB_KBD_LEDMASK;
158 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
159 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
160 0x200, iface->desc.bInterfaceNumber, leds, 1, 0);
161 }
162
163 #define CAPITAL_MASK 0x20
164 /* Translate the scancode in ASCII */
usb_kbd_translate(struct usb_kbd_pdata * data,unsigned char scancode,unsigned char modifier,int pressed)165 static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode,
166 unsigned char modifier, int pressed)
167 {
168 uint8_t keycode = 0;
169
170 /* Key released */
171 if (pressed == 0) {
172 data->repeat_delay = 0;
173 return 0;
174 }
175
176 if (pressed == 2) {
177 data->repeat_delay++;
178 if (data->repeat_delay < REPEAT_DELAY)
179 return 0;
180
181 data->repeat_delay = REPEAT_DELAY;
182 }
183
184 /* Alphanumeric values */
185 if ((scancode > 3) && (scancode <= 0x1d)) {
186 keycode = scancode - 4 + 'a';
187
188 if (data->flags & USB_KBD_CAPSLOCK)
189 keycode &= ~CAPITAL_MASK;
190
191 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) {
192 /* Handle CAPSLock + Shift pressed simultaneously */
193 if (keycode & CAPITAL_MASK)
194 keycode &= ~CAPITAL_MASK;
195 else
196 keycode |= CAPITAL_MASK;
197 }
198 }
199
200 if ((scancode > 0x1d) && (scancode < 0x39)) {
201 /* Shift pressed */
202 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT))
203 keycode = usb_kbd_numkey_shifted[scancode - 0x1e];
204 else
205 keycode = usb_kbd_numkey[scancode - 0x1e];
206 }
207
208 /* Numeric keypad */
209 if ((scancode >= 0x54) && (scancode <= 0x67))
210 keycode = usb_kbd_num_keypad[scancode - 0x54];
211
212 if (data->flags & USB_KBD_CTRL)
213 keycode = scancode - 0x3;
214
215 if (pressed == 1) {
216 if (scancode == NUM_LOCK) {
217 data->flags ^= USB_KBD_NUMLOCK;
218 return 1;
219 }
220
221 if (scancode == CAPS_LOCK) {
222 data->flags ^= USB_KBD_CAPSLOCK;
223 return 1;
224 }
225 if (scancode == SCROLL_LOCK) {
226 data->flags ^= USB_KBD_SCROLLLOCK;
227 return 1;
228 }
229 }
230
231 /* Report keycode if any */
232 if (keycode) {
233 debug("%c", keycode);
234 usb_kbd_put_queue(data, keycode);
235 return 0;
236 }
237
238 #ifdef CONFIG_USB_KEYBOARD_FN_KEYS
239 if (scancode < 0x3a || scancode > 0x52 ||
240 scancode == 0x46 || scancode == 0x47)
241 return 1;
242
243 usb_kbd_put_queue(data, 0x1b);
244 if (scancode < 0x3e) {
245 /* F1 - F4 */
246 usb_kbd_put_queue(data, 0x4f);
247 usb_kbd_put_queue(data, scancode - 0x3a + 'P');
248 return 0;
249 }
250 usb_kbd_put_queue(data, '[');
251 if (scancode < 0x42) {
252 /* F5 - F8 */
253 usb_kbd_put_queue(data, '1');
254 if (scancode == 0x3e)
255 --scancode;
256 keycode = scancode - 0x3f + '7';
257 } else if (scancode < 0x49) {
258 /* F9 - F12 */
259 usb_kbd_put_queue(data, '2');
260 if (scancode > 0x43)
261 ++scancode;
262 keycode = scancode - 0x42 + '0';
263 } else {
264 /*
265 * INSERT, HOME, PAGE UP, DELETE, END, PAGE DOWN,
266 * RIGHT, LEFT, DOWN, UP
267 */
268 keycode = usb_special_keys[scancode - 0x49];
269 }
270 usb_kbd_put_queue(data, keycode);
271 if (scancode < 0x4f && scancode != 0x4a && scancode != 0x4d)
272 usb_kbd_put_queue(data, '~');
273 return 0;
274 #else
275 /* Left, Right, Up, Down */
276 if (scancode > 0x4e && scancode < 0x53) {
277 usb_kbd_put_queue(data, 0x1b);
278 usb_kbd_put_queue(data, '[');
279 usb_kbd_put_queue(data, usb_special_keys[scancode - 0x4f]);
280 return 0;
281 }
282 return 1;
283 #endif /* CONFIG_USB_KEYBOARD_FN_KEYS */
284 }
285
usb_kbd_service_key(struct usb_device * dev,int i,int up)286 static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up)
287 {
288 uint32_t res = 0;
289 struct usb_kbd_pdata *data = dev->privptr;
290 uint8_t *new;
291 uint8_t *old;
292
293 if (up) {
294 new = data->old;
295 old = data->new;
296 } else {
297 new = data->new;
298 old = data->old;
299 }
300
301 if ((old[i] > 3) &&
302 (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) ==
303 new + USB_KBD_BOOT_REPORT_SIZE)) {
304 res |= usb_kbd_translate(data, old[i], data->new[0], up);
305 }
306
307 return res;
308 }
309
310 /* Interrupt service routine */
usb_kbd_irq_worker(struct usb_device * dev)311 static int usb_kbd_irq_worker(struct usb_device *dev)
312 {
313 struct usb_kbd_pdata *data = dev->privptr;
314 int i, res = 0;
315
316 /* No combo key pressed */
317 if (data->new[0] == 0x00)
318 data->flags &= ~USB_KBD_CTRL;
319 /* Left or Right Ctrl pressed */
320 else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR))
321 data->flags |= USB_KBD_CTRL;
322
323 for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) {
324 res |= usb_kbd_service_key(dev, i, 0);
325 res |= usb_kbd_service_key(dev, i, 1);
326 }
327
328 /* Key is still pressed */
329 if ((data->new[2] > 3) && (data->old[2] == data->new[2]))
330 res |= usb_kbd_translate(data, data->new[2], data->new[0], 2);
331
332 if (res == 1)
333 usb_kbd_setled(dev);
334
335 memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE);
336
337 return 1;
338 }
339
340 /* Keyboard interrupt handler */
usb_kbd_irq(struct usb_device * dev)341 static int usb_kbd_irq(struct usb_device *dev)
342 {
343 if ((dev->irq_status != 0) ||
344 (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) {
345 debug("USB KBD: Error %lX, len %d\n",
346 dev->irq_status, dev->irq_act_len);
347 return 1;
348 }
349
350 return usb_kbd_irq_worker(dev);
351 }
352
353 /* Interrupt polling */
usb_kbd_poll_for_event(struct usb_device * dev)354 static inline void usb_kbd_poll_for_event(struct usb_device *dev)
355 {
356 #if defined(CONFIG_SYS_USB_EVENT_POLL)
357 struct usb_kbd_pdata *data = dev->privptr;
358
359 /* Submit an interrupt transfer request */
360 if (usb_int_msg(dev, data->intpipe, &data->new[0],
361 data->intpktsize, data->intinterval, true) >= 0)
362 usb_kbd_irq_worker(dev);
363 #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) || \
364 defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE)
365 #if defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
366 struct usb_interface *iface;
367 struct usb_kbd_pdata *data = dev->privptr;
368 iface = &dev->config.if_desc[0];
369 usb_get_report(dev, iface->desc.bInterfaceNumber,
370 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE);
371 if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) {
372 usb_kbd_irq_worker(dev);
373 #else
374 struct usb_kbd_pdata *data = dev->privptr;
375 if (poll_int_queue(dev, data->intq)) {
376 usb_kbd_irq_worker(dev);
377 /* We've consumed all queued int packets, create new */
378 destroy_int_queue(dev, data->intq);
379 data->intq = create_int_queue(dev, data->intpipe, 1,
380 USB_KBD_BOOT_REPORT_SIZE, data->new,
381 data->intinterval);
382 #endif
383 data->last_report = get_timer(0);
384 /* Repeat last usb hid report every REPEAT_RATE ms for keyrepeat */
385 } else if (data->last_report != -1 &&
386 get_timer(data->last_report) > REPEAT_RATE) {
387 usb_kbd_irq_worker(dev);
388 data->last_report = get_timer(0);
389 }
390 #endif
391 }
392
393 /* test if a character is in the queue */
394 static int usb_kbd_testc(struct stdio_dev *sdev)
395 {
396 struct stdio_dev *dev;
397 struct usb_device *usb_kbd_dev;
398 struct usb_kbd_pdata *data;
399
400 /*
401 * Polling the keyboard for an event can take dozens of milliseconds.
402 * Add a delay between polls to avoid blocking activity which polls
403 * rapidly, like the UEFI console timer.
404 */
405 unsigned long poll_delay = CONFIG_SYS_HZ / 50;
406
407 #ifdef CONFIG_CMD_NET
408 /*
409 * If net_busy_flag is 1, NET transfer is running,
410 * then we check key-pressed every second (first check may be
411 * less than 1 second) to improve TFTP booting performance.
412 */
413 if (net_busy_flag)
414 poll_delay = CONFIG_SYS_HZ;
415 #endif
416
417 #ifdef CONFIG_SANDBOX
418 /*
419 * Skip delaying polls if a test requests it.
420 */
421 if (state_get_skip_delays())
422 poll_delay = 0;
423 #endif
424
425 dev = stdio_get_by_name(sdev->name);
426 usb_kbd_dev = (struct usb_device *)dev->priv;
427 data = usb_kbd_dev->privptr;
428
429 if (get_timer(kbd_testc_tms) >= poll_delay) {
430 usb_kbd_poll_for_event(usb_kbd_dev);
431 kbd_testc_tms = get_timer(0);
432 }
433
434 return !(data->usb_in_pointer == data->usb_out_pointer);
435 }
436
437 /* gets the character from the queue */
438 static int usb_kbd_getc(struct stdio_dev *sdev)
439 {
440 struct stdio_dev *dev;
441 struct usb_device *usb_kbd_dev;
442 struct usb_kbd_pdata *data;
443
444 dev = stdio_get_by_name(sdev->name);
445 usb_kbd_dev = (struct usb_device *)dev->priv;
446 data = usb_kbd_dev->privptr;
447
448 while (data->usb_in_pointer == data->usb_out_pointer) {
449 schedule();
450 usb_kbd_poll_for_event(usb_kbd_dev);
451 }
452
453 if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1)
454 data->usb_out_pointer = 0;
455 else
456 data->usb_out_pointer++;
457
458 return data->usb_kbd_buffer[data->usb_out_pointer];
459 }
460
461 /* probes the USB device dev for keyboard type. */
462 static int usb_kbd_probe_dev(struct usb_device *dev, unsigned int ifnum)
463 {
464 struct usb_interface *iface;
465 struct usb_endpoint_descriptor *ep;
466 struct usb_kbd_pdata *data;
467 int epNum;
468
469 if (dev->descriptor.bNumConfigurations != 1)
470 return 0;
471
472 iface = &dev->config.if_desc[ifnum];
473
474 if (iface->desc.bInterfaceClass != USB_CLASS_HID)
475 return 0;
476
477 if (iface->desc.bInterfaceSubClass != USB_SUB_HID_BOOT)
478 return 0;
479
480 if (iface->desc.bInterfaceProtocol != USB_PROT_HID_KEYBOARD)
481 return 0;
482
483 for (epNum = 0; epNum < iface->desc.bNumEndpoints; epNum++) {
484 ep = &iface->ep_desc[epNum];
485
486 /* Check if endpoint is interrupt IN endpoint */
487 if ((ep->bmAttributes & 3) != 3)
488 continue;
489
490 if (ep->bEndpointAddress & 0x80)
491 break;
492 }
493
494 if (epNum == iface->desc.bNumEndpoints)
495 return 0;
496
497 debug("USB KBD: found interrupt EP: 0x%x\n", ep->bEndpointAddress);
498
499 data = malloc(sizeof(struct usb_kbd_pdata));
500 if (!data) {
501 printf("USB KBD: Error allocating private data\n");
502 return 0;
503 }
504
505 /* Clear private data */
506 memset(data, 0, sizeof(struct usb_kbd_pdata));
507
508 /* allocate input buffer aligned and sized to USB DMA alignment */
509 data->new = memalign(USB_DMA_MINALIGN,
510 roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN));
511
512 /* Insert private data into USB device structure */
513 dev->privptr = data;
514
515 /* Set IRQ handler */
516 dev->irq_handle = usb_kbd_irq;
517
518 data->intpipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
519 data->intpktsize = min(usb_maxpacket(dev, data->intpipe),
520 USB_KBD_BOOT_REPORT_SIZE);
521 data->intinterval = ep->bInterval;
522 data->last_report = -1;
523
524 /* We found a USB Keyboard, install it. */
525 debug("USB KBD: set boot protocol\n");
526 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
527
528 #if !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) && \
529 !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE)
530 debug("USB KBD: set idle interval...\n");
531 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE / 4, 0);
532 #else
533 debug("USB KBD: set idle interval=0...\n");
534 usb_set_idle(dev, iface->desc.bInterfaceNumber, 0, 0);
535 #endif
536
537 debug("USB KBD: enable interrupt pipe...\n");
538 #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
539 data->intq = create_int_queue(dev, data->intpipe, 1,
540 USB_KBD_BOOT_REPORT_SIZE, data->new,
541 data->intinterval);
542 if (!data->intq) {
543 #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
544 if (usb_get_report(dev, iface->desc.bInterfaceNumber,
545 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE) < 0) {
546 #else
547 if (usb_int_msg(dev, data->intpipe, data->new, data->intpktsize,
548 data->intinterval, false) < 0) {
549 #endif
550 printf("Failed to get keyboard state from device %04x:%04x\n",
551 dev->descriptor.idVendor, dev->descriptor.idProduct);
552 /* Abort, we don't want to use that non-functional keyboard. */
553 return 0;
554 }
555
556 /* Success. */
557 return 1;
558 }
559
560 static int probe_usb_keyboard(struct usb_device *dev)
561 {
562 char *stdinname;
563 struct stdio_dev usb_kbd_dev;
564 int error;
565
566 /* Try probing the keyboard */
567 if (usb_kbd_probe_dev(dev, 0) != 1)
568 return -ENOENT;
569
570 /* Register the keyboard */
571 debug("USB KBD: register.\n");
572 memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
573 strcpy(usb_kbd_dev.name, DEVNAME);
574 usb_kbd_dev.flags = DEV_FLAGS_INPUT;
575 usb_kbd_dev.getc = usb_kbd_getc;
576 usb_kbd_dev.tstc = usb_kbd_testc;
577 usb_kbd_dev.priv = (void *)dev;
578 error = stdio_register(&usb_kbd_dev);
579 if (error)
580 return error;
581
582 stdinname = env_get("stdin");
583 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
584 if (strstr(stdinname, DEVNAME) != NULL) {
585 error = iomux_doenv(stdin, stdinname);
586 if (error)
587 return error;
588 }
589 #else
590 /* Check if this is the standard input device. */
591 if (!strcmp(stdinname, DEVNAME)) {
592 /* Reassign the console */
593 if (overwrite_console())
594 return 1;
595
596 error = console_assign(stdin, DEVNAME);
597 if (error)
598 return error;
599 }
600 #endif
601
602 return 0;
603 }
604
605 #if !CONFIG_IS_ENABLED(DM_USB)
606 /* Search for keyboard and register it if found. */
607 int drv_usb_kbd_init(void)
608 {
609 int error, i;
610
611 debug("%s: Probing for keyboard\n", __func__);
612 /* Scan all USB Devices */
613 for (i = 0; i < USB_MAX_DEVICE; i++) {
614 struct usb_device *dev;
615
616 /* Get USB device. */
617 dev = usb_get_dev_index(i);
618 if (!dev)
619 break;
620
621 if (dev->devnum == -1)
622 continue;
623
624 error = probe_usb_keyboard(dev);
625 if (!error)
626 return 1;
627 if (error && error != -ENOENT)
628 return error;
629 }
630
631 /* No USB Keyboard found */
632 return -1;
633 }
634
635 /* Deregister the keyboard. */
636 int usb_kbd_deregister(int force)
637 {
638 #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
639 struct stdio_dev *dev;
640 struct usb_device *usb_kbd_dev;
641 struct usb_kbd_pdata *data;
642
643 dev = stdio_get_by_name(DEVNAME);
644 if (dev) {
645 usb_kbd_dev = (struct usb_device *)dev->priv;
646 data = usb_kbd_dev->privptr;
647 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
648 if (iomux_replace_device(stdin, DEVNAME, force ? "nulldev" : ""))
649 return 1;
650 #endif
651 if (stdio_deregister_dev(dev, force) != 0)
652 return 1;
653 #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
654 destroy_int_queue(usb_kbd_dev, data->intq);
655 #endif
656 free(data->new);
657 free(data);
658 }
659
660 return 0;
661 #else
662 return 1;
663 #endif
664 }
665
666 #endif
667
668 #if CONFIG_IS_ENABLED(DM_USB)
669
670 static int usb_kbd_probe(struct udevice *dev)
671 {
672 struct usb_device *udev = dev_get_parent_priv(dev);
673
674 return probe_usb_keyboard(udev);
675 }
676
677 static int usb_kbd_remove(struct udevice *dev)
678 {
679 struct usb_device *udev = dev_get_parent_priv(dev);
680 struct usb_kbd_pdata *data;
681 struct stdio_dev *sdev;
682 int ret;
683
684 sdev = stdio_get_by_name(DEVNAME);
685 if (!sdev) {
686 ret = -ENXIO;
687 goto err;
688 }
689 data = udev->privptr;
690 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
691 if (iomux_replace_device(stdin, DEVNAME, "nulldev")) {
692 ret = -ENOLINK;
693 goto err;
694 }
695 #endif
696 if (stdio_deregister_dev(sdev, true)) {
697 ret = -EPERM;
698 goto err;
699 }
700 #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE
701 destroy_int_queue(udev, data->intq);
702 #endif
703 free(data->new);
704 free(data);
705
706 return 0;
707 err:
708 printf("%s: warning, ret=%d", __func__, ret);
709 return ret;
710 }
711
712 static const struct udevice_id usb_kbd_ids[] = {
713 { .compatible = "usb-keyboard" },
714 { }
715 };
716
717 U_BOOT_DRIVER(usb_kbd) = {
718 .name = "usb_kbd",
719 .id = UCLASS_KEYBOARD,
720 .of_match = usb_kbd_ids,
721 .probe = usb_kbd_probe,
722 .remove = usb_kbd_remove,
723 };
724
725 static const struct usb_device_id kbd_id_table[] = {
726 {
727 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
728 USB_DEVICE_ID_MATCH_INT_SUBCLASS |
729 USB_DEVICE_ID_MATCH_INT_PROTOCOL,
730 .bInterfaceClass = USB_CLASS_HID,
731 .bInterfaceSubClass = USB_SUB_HID_BOOT,
732 .bInterfaceProtocol = USB_PROT_HID_KEYBOARD,
733 },
734 { } /* Terminating entry */
735 };
736
737 U_BOOT_USB_DEVICE(usb_kbd, kbd_id_table);
738
739 #endif
740