]>
Commit | Line | Data |
---|---|---|
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 | * | |
8 | * SPDX-License-Identifier: GPL-2.0+ | |
9 | */ | |
10 | #include <common.h> | |
11 | #include <console.h> | |
12 | #include <dm.h> | |
13 | #include <errno.h> | |
14 | #include <malloc.h> | |
15 | #include <memalign.h> | |
16 | #include <stdio_dev.h> | |
17 | #include <asm/byteorder.h> | |
18 | ||
19 | #include <usb.h> | |
20 | ||
21 | /* | |
22 | * If overwrite_console returns 1, the stdin, stderr and stdout | |
23 | * are switched to the serial port, else the settings in the | |
24 | * environment are used | |
25 | */ | |
26 | #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE | |
27 | extern int overwrite_console(void); | |
28 | #else | |
29 | int overwrite_console(void) | |
30 | { | |
31 | return 0; | |
32 | } | |
33 | #endif | |
34 | ||
35 | /* Keyboard sampling rate */ | |
36 | #define REPEAT_RATE 40 /* 40msec -> 25cps */ | |
37 | #define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */ | |
38 | ||
39 | #define NUM_LOCK 0x53 | |
40 | #define CAPS_LOCK 0x39 | |
41 | #define SCROLL_LOCK 0x47 | |
42 | ||
43 | /* Modifier bits */ | |
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 */ | |
57 | #define DEVNAME "usbkbd" | |
58 | ||
59 | /* Keyboard maps */ | |
60 | static const unsigned char usb_kbd_numkey[] = { | |
61 | '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', | |
62 | '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']', | |
63 | '\\', '#', ';', '\'', '`', ',', '.', '/' | |
64 | }; | |
65 | static const unsigned char usb_kbd_numkey_shifted[] = { | |
66 | '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', | |
67 | '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}', | |
68 | '|', '~', ':', '"', '~', '<', '>', '?' | |
69 | }; | |
70 | ||
71 | static 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 | ||
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 | */ | |
82 | static const unsigned char usb_kbd_arrow[] = { | |
83 | 0x6, 0x2, 0xe, 0x10 | |
84 | }; | |
85 | ||
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) | |
94 | ||
95 | #define USB_KBD_LEDMASK \ | |
96 | (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK) | |
97 | ||
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 | ||
104 | struct usb_kbd_pdata { | |
105 | unsigned long intpipe; | |
106 | int intpktsize; | |
107 | int intinterval; | |
108 | unsigned long last_report; | |
109 | struct int_queue *intq; | |
110 | ||
111 | uint32_t repeat_delay; | |
112 | ||
113 | uint32_t usb_in_pointer; | |
114 | uint32_t usb_out_pointer; | |
115 | uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN]; | |
116 | ||
117 | uint8_t *new; | |
118 | uint8_t old[USB_KBD_BOOT_REPORT_SIZE]; | |
119 | ||
120 | uint8_t flags; | |
121 | }; | |
122 | ||
123 | extern int __maybe_unused net_busy_flag; | |
124 | ||
125 | /* The period of time between two calls of usb_kbd_testc(). */ | |
126 | static unsigned long __maybe_unused kbd_testc_tms; | |
127 | ||
128 | /* Puts character in the queue and sets up the in and out pointer. */ | |
129 | static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c) | |
130 | { | |
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; | |
135 | ||
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; | |
141 | ||
142 | data->usb_in_pointer++; | |
143 | } | |
144 | ||
145 | data->usb_kbd_buffer[data->usb_in_pointer] = c; | |
146 | } | |
147 | ||
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. | |
152 | */ | |
153 | static void usb_kbd_setled(struct usb_device *dev) | |
154 | { | |
155 | struct usb_interface *iface = &dev->config.if_desc[0]; | |
156 | struct usb_kbd_pdata *data = dev->privptr; | |
157 | ALLOC_ALIGN_BUFFER(uint32_t, leds, 1, USB_DMA_MINALIGN); | |
158 | ||
159 | *leds = data->flags & USB_KBD_LEDMASK; | |
160 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
161 | USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
162 | 0x200, iface->desc.bInterfaceNumber, leds, 1, 0); | |
163 | } | |
164 | ||
165 | #define CAPITAL_MASK 0x20 | |
166 | /* Translate the scancode in ASCII */ | |
167 | static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode, | |
168 | unsigned char modifier, int pressed) | |
169 | { | |
170 | uint8_t keycode = 0; | |
171 | ||
172 | /* Key released */ | |
173 | if (pressed == 0) { | |
174 | data->repeat_delay = 0; | |
175 | return 0; | |
176 | } | |
177 | ||
178 | if (pressed == 2) { | |
179 | data->repeat_delay++; | |
180 | if (data->repeat_delay < REPEAT_DELAY) | |
181 | return 0; | |
182 | ||
183 | data->repeat_delay = REPEAT_DELAY; | |
184 | } | |
185 | ||
186 | /* Alphanumeric values */ | |
187 | if ((scancode > 3) && (scancode <= 0x1d)) { | |
188 | keycode = scancode - 4 + 'a'; | |
189 | ||
190 | if (data->flags & USB_KBD_CAPSLOCK) | |
191 | keycode &= ~CAPITAL_MASK; | |
192 | ||
193 | if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) { | |
194 | /* Handle CAPSLock + Shift pressed simultaneously */ | |
195 | if (keycode & CAPITAL_MASK) | |
196 | keycode &= ~CAPITAL_MASK; | |
197 | else | |
198 | keycode |= CAPITAL_MASK; | |
199 | } | |
200 | } | |
201 | ||
202 | if ((scancode > 0x1d) && (scancode < 0x39)) { | |
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]; | |
208 | } | |
209 | ||
210 | /* Arrow keys */ | |
211 | if ((scancode >= 0x4f) && (scancode <= 0x52)) | |
212 | keycode = usb_kbd_arrow[scancode - 0x4f]; | |
213 | ||
214 | /* Numeric keypad */ | |
215 | if ((scancode >= 0x54) && (scancode <= 0x67)) | |
216 | keycode = usb_kbd_num_keypad[scancode - 0x54]; | |
217 | ||
218 | if (data->flags & USB_KBD_CTRL) | |
219 | keycode = scancode - 0x3; | |
220 | ||
221 | if (pressed == 1) { | |
222 | if (scancode == NUM_LOCK) { | |
223 | data->flags ^= USB_KBD_NUMLOCK; | |
224 | return 1; | |
225 | } | |
226 | ||
227 | if (scancode == CAPS_LOCK) { | |
228 | data->flags ^= USB_KBD_CAPSLOCK; | |
229 | return 1; | |
230 | } | |
231 | if (scancode == SCROLL_LOCK) { | |
232 | data->flags ^= USB_KBD_SCROLLLOCK; | |
233 | return 1; | |
234 | } | |
235 | } | |
236 | ||
237 | /* Report keycode if any */ | |
238 | if (keycode) { | |
239 | debug("%c", keycode); | |
240 | usb_kbd_put_queue(data, keycode); | |
241 | } | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static 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 | ||
261 | if ((old[i] > 3) && | |
262 | (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) == | |
263 | new + USB_KBD_BOOT_REPORT_SIZE)) { | |
264 | res |= usb_kbd_translate(data, old[i], data->new[0], up); | |
265 | } | |
266 | ||
267 | return res; | |
268 | } | |
269 | ||
270 | /* Interrupt service routine */ | |
271 | static int usb_kbd_irq_worker(struct usb_device *dev) | |
272 | { | |
273 | struct usb_kbd_pdata *data = dev->privptr; | |
274 | int i, res = 0; | |
275 | ||
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; | |
282 | ||
283 | for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) { | |
284 | res |= usb_kbd_service_key(dev, i, 0); | |
285 | res |= usb_kbd_service_key(dev, i, 1); | |
286 | } | |
287 | ||
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 | ||
292 | if (res == 1) | |
293 | usb_kbd_setled(dev); | |
294 | ||
295 | memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE); | |
296 | ||
297 | return 1; | |
298 | } | |
299 | ||
300 | /* Keyboard interrupt handler */ | |
301 | static int usb_kbd_irq(struct usb_device *dev) | |
302 | { | |
303 | if ((dev->irq_status != 0) || | |
304 | (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) { | |
305 | debug("USB KBD: Error %lX, len %d\n", | |
306 | dev->irq_status, dev->irq_act_len); | |
307 | return 1; | |
308 | } | |
309 | ||
310 | return usb_kbd_irq_worker(dev); | |
311 | } | |
312 | ||
313 | /* Interrupt polling */ | |
314 | static inline void usb_kbd_poll_for_event(struct usb_device *dev) | |
315 | { | |
316 | #if defined(CONFIG_SYS_USB_EVENT_POLL) | |
317 | struct usb_kbd_pdata *data = dev->privptr; | |
318 | ||
319 | /* Submit a interrupt transfer request */ | |
320 | usb_submit_int_msg(dev, data->intpipe, &data->new[0], data->intpktsize, | |
321 | data->intinterval); | |
322 | ||
323 | usb_kbd_irq_worker(dev); | |
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) | |
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, | |
331 | 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE); | |
332 | if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE)) { | |
333 | usb_kbd_irq_worker(dev); | |
334 | #else | |
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, | |
341 | USB_KBD_BOOT_REPORT_SIZE, data->new, | |
342 | data->intinterval); | |
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); | |
350 | } | |
351 | #endif | |
352 | } | |
353 | ||
354 | /* test if a character is in the queue */ | |
355 | static int usb_kbd_testc(struct stdio_dev *sdev) | |
356 | { | |
357 | struct stdio_dev *dev; | |
358 | struct usb_device *usb_kbd_dev; | |
359 | struct usb_kbd_pdata *data; | |
360 | ||
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 | |
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 */ | |
381 | static int usb_kbd_getc(struct stdio_dev *sdev) | |
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. */ | |
403 | static int usb_kbd_probe_dev(struct usb_device *dev, unsigned int ifnum) | |
404 | { | |
405 | struct usb_interface *iface; | |
406 | struct usb_endpoint_descriptor *ep; | |
407 | struct usb_kbd_pdata *data; | |
408 | ||
409 | if (dev->descriptor.bNumConfigurations != 1) | |
410 | return 0; | |
411 | ||
412 | iface = &dev->config.if_desc[ifnum]; | |
413 | ||
414 | if (iface->desc.bInterfaceClass != USB_CLASS_HID) | |
415 | return 0; | |
416 | ||
417 | if (iface->desc.bInterfaceSubClass != USB_SUB_HID_BOOT) | |
418 | return 0; | |
419 | ||
420 | if (iface->desc.bInterfaceProtocol != USB_PROT_HID_KEYBOARD) | |
421 | return 0; | |
422 | ||
423 | if (iface->desc.bNumEndpoints != 1) | |
424 | return 0; | |
425 | ||
426 | ep = &iface->ep_desc[0]; | |
427 | ||
428 | /* Check if endpoint 1 is interrupt endpoint */ | |
429 | if (!(ep->bEndpointAddress & 0x80)) | |
430 | return 0; | |
431 | ||
432 | if ((ep->bmAttributes & 3) != 3) | |
433 | return 0; | |
434 | ||
435 | debug("USB KBD: found set protocol...\n"); | |
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 | ||
446 | /* allocate input buffer aligned and sized to USB DMA alignment */ | |
447 | data->new = memalign(USB_DMA_MINALIGN, | |
448 | roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN)); | |
449 | ||
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 | ||
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; | |
460 | data->last_report = -1; | |
461 | ||
462 | /* We found a USB Keyboard, install it. */ | |
463 | usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0); | |
464 | ||
465 | debug("USB KBD: found set idle...\n"); | |
466 | #if !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) && \ | |
467 | !defined(CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE) | |
468 | usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE / 4, 0); | |
469 | #else | |
470 | usb_set_idle(dev, iface->desc.bInterfaceNumber, 0, 0); | |
471 | #endif | |
472 | ||
473 | debug("USB KBD: enable interrupt pipe...\n"); | |
474 | #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE | |
475 | data->intq = create_int_queue(dev, data->intpipe, 1, | |
476 | USB_KBD_BOOT_REPORT_SIZE, data->new, | |
477 | data->intinterval); | |
478 | if (!data->intq) { | |
479 | #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) | |
480 | if (usb_get_report(dev, iface->desc.bInterfaceNumber, | |
481 | 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE) < 0) { | |
482 | #else | |
483 | if (usb_submit_int_msg(dev, data->intpipe, data->new, data->intpktsize, | |
484 | data->intinterval) < 0) { | |
485 | #endif | |
486 | printf("Failed to get keyboard state from device %04x:%04x\n", | |
487 | dev->descriptor.idVendor, dev->descriptor.idProduct); | |
488 | /* Abort, we don't want to use that non-functional keyboard. */ | |
489 | return 0; | |
490 | } | |
491 | ||
492 | /* Success. */ | |
493 | return 1; | |
494 | } | |
495 | ||
496 | static int probe_usb_keyboard(struct usb_device *dev) | |
497 | { | |
498 | char *stdinname; | |
499 | struct stdio_dev usb_kbd_dev; | |
500 | int error; | |
501 | ||
502 | /* Try probing the keyboard */ | |
503 | if (usb_kbd_probe_dev(dev, 0) != 1) | |
504 | return -ENOENT; | |
505 | ||
506 | /* Register the keyboard */ | |
507 | debug("USB KBD: register.\n"); | |
508 | memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev)); | |
509 | strcpy(usb_kbd_dev.name, DEVNAME); | |
510 | usb_kbd_dev.flags = DEV_FLAGS_INPUT; | |
511 | usb_kbd_dev.getc = usb_kbd_getc; | |
512 | usb_kbd_dev.tstc = usb_kbd_testc; | |
513 | usb_kbd_dev.priv = (void *)dev; | |
514 | error = stdio_register(&usb_kbd_dev); | |
515 | if (error) | |
516 | return error; | |
517 | ||
518 | stdinname = env_get("stdin"); | |
519 | #if CONFIG_IS_ENABLED(CONSOLE_MUX) | |
520 | error = iomux_doenv(stdin, stdinname); | |
521 | if (error) | |
522 | return error; | |
523 | #else | |
524 | /* Check if this is the standard input device. */ | |
525 | if (strcmp(stdinname, DEVNAME)) | |
526 | return 1; | |
527 | ||
528 | /* Reassign the console */ | |
529 | if (overwrite_console()) | |
530 | return 1; | |
531 | ||
532 | error = console_assign(stdin, DEVNAME); | |
533 | if (error) | |
534 | return error; | |
535 | #endif | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | #ifndef CONFIG_DM_USB | |
541 | /* Search for keyboard and register it if found. */ | |
542 | int drv_usb_kbd_init(void) | |
543 | { | |
544 | int error, i; | |
545 | ||
546 | debug("%s: Probing for keyboard\n", __func__); | |
547 | /* Scan all USB Devices */ | |
548 | for (i = 0; i < USB_MAX_DEVICE; i++) { | |
549 | struct usb_device *dev; | |
550 | ||
551 | /* Get USB device. */ | |
552 | dev = usb_get_dev_index(i); | |
553 | if (!dev) | |
554 | break; | |
555 | ||
556 | if (dev->devnum == -1) | |
557 | continue; | |
558 | ||
559 | error = probe_usb_keyboard(dev); | |
560 | if (!error) | |
561 | return 1; | |
562 | if (error && error != -ENOENT) | |
563 | return error; | |
564 | } | |
565 | ||
566 | /* No USB Keyboard found */ | |
567 | return -1; | |
568 | } | |
569 | ||
570 | /* Deregister the keyboard. */ | |
571 | int usb_kbd_deregister(int force) | |
572 | { | |
573 | #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) | |
574 | struct stdio_dev *dev; | |
575 | struct usb_device *usb_kbd_dev; | |
576 | struct usb_kbd_pdata *data; | |
577 | ||
578 | dev = stdio_get_by_name(DEVNAME); | |
579 | if (dev) { | |
580 | usb_kbd_dev = (struct usb_device *)dev->priv; | |
581 | data = usb_kbd_dev->privptr; | |
582 | if (stdio_deregister_dev(dev, force) != 0) | |
583 | return 1; | |
584 | #if CONFIG_IS_ENABLED(CONSOLE_MUX) | |
585 | if (iomux_doenv(stdin, env_get("stdin")) != 0) | |
586 | return 1; | |
587 | #endif | |
588 | #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE | |
589 | destroy_int_queue(usb_kbd_dev, data->intq); | |
590 | #endif | |
591 | free(data->new); | |
592 | free(data); | |
593 | } | |
594 | ||
595 | return 0; | |
596 | #else | |
597 | return 1; | |
598 | #endif | |
599 | } | |
600 | ||
601 | #endif | |
602 | ||
603 | #ifdef CONFIG_DM_USB | |
604 | ||
605 | static int usb_kbd_probe(struct udevice *dev) | |
606 | { | |
607 | struct usb_device *udev = dev_get_parent_priv(dev); | |
608 | ||
609 | return probe_usb_keyboard(udev); | |
610 | } | |
611 | ||
612 | static int usb_kbd_remove(struct udevice *dev) | |
613 | { | |
614 | struct usb_device *udev = dev_get_parent_priv(dev); | |
615 | struct usb_kbd_pdata *data; | |
616 | struct stdio_dev *sdev; | |
617 | int ret; | |
618 | ||
619 | sdev = stdio_get_by_name(DEVNAME); | |
620 | if (!sdev) { | |
621 | ret = -ENXIO; | |
622 | goto err; | |
623 | } | |
624 | data = udev->privptr; | |
625 | if (stdio_deregister_dev(sdev, true)) { | |
626 | ret = -EPERM; | |
627 | goto err; | |
628 | } | |
629 | #if CONFIG_IS_ENABLED(CONSOLE_MUX) | |
630 | if (iomux_doenv(stdin, env_get("stdin"))) { | |
631 | ret = -ENOLINK; | |
632 | goto err; | |
633 | } | |
634 | #endif | |
635 | #ifdef CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE | |
636 | destroy_int_queue(udev, data->intq); | |
637 | #endif | |
638 | free(data->new); | |
639 | free(data); | |
640 | ||
641 | return 0; | |
642 | err: | |
643 | printf("%s: warning, ret=%d", __func__, ret); | |
644 | return ret; | |
645 | } | |
646 | ||
647 | static const struct udevice_id usb_kbd_ids[] = { | |
648 | { .compatible = "usb-keyboard" }, | |
649 | { } | |
650 | }; | |
651 | ||
652 | U_BOOT_DRIVER(usb_kbd) = { | |
653 | .name = "usb_kbd", | |
654 | .id = UCLASS_KEYBOARD, | |
655 | .of_match = usb_kbd_ids, | |
656 | .probe = usb_kbd_probe, | |
657 | .remove = usb_kbd_remove, | |
658 | }; | |
659 | ||
660 | static const struct usb_device_id kbd_id_table[] = { | |
661 | { | |
662 | .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS | | |
663 | USB_DEVICE_ID_MATCH_INT_SUBCLASS | | |
664 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, | |
665 | .bInterfaceClass = USB_CLASS_HID, | |
666 | .bInterfaceSubClass = USB_SUB_HID_BOOT, | |
667 | .bInterfaceProtocol = USB_PROT_HID_KEYBOARD, | |
668 | }, | |
669 | { } /* Terminating entry */ | |
670 | }; | |
671 | ||
672 | U_BOOT_USB_DEVICE(usb_kbd, kbd_id_table); | |
673 | ||
674 | #endif |