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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 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | * | |
26 | */ | |
27 | #include <common.h> | |
9a8c72a6 | 28 | #include <malloc.h> |
52cb4d4f | 29 | #include <stdio_dev.h> |
c918261c | 30 | #include <asm/byteorder.h> |
affae2bf | 31 | |
affae2bf WD |
32 | #include <usb.h> |
33 | ||
affae2bf | 34 | /* |
00b7d6ec | 35 | * If overwrite_console returns 1, the stdin, stderr and stdout |
affae2bf WD |
36 | * are switched to the serial port, else the settings in the |
37 | * environment are used | |
38 | */ | |
6d0f6bcf | 39 | #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE |
00b7d6ec | 40 | extern int overwrite_console(void); |
affae2bf | 41 | #else |
00b7d6ec | 42 | int overwrite_console(void) |
affae2bf | 43 | { |
00b7d6ec | 44 | return 0; |
affae2bf WD |
45 | } |
46 | #endif | |
47 | ||
9a8c72a6 MV |
48 | /* Keyboard sampling rate */ |
49 | #define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */ | |
50 | #define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */ | |
affae2bf WD |
51 | |
52 | #define NUM_LOCK 0x53 | |
00b7d6ec MV |
53 | #define CAPS_LOCK 0x39 |
54 | #define SCROLL_LOCK 0x47 | |
affae2bf | 55 | |
affae2bf | 56 | /* Modifier bits */ |
9a8c72a6 MV |
57 | #define LEFT_CNTR (1 << 0) |
58 | #define LEFT_SHIFT (1 << 1) | |
59 | #define LEFT_ALT (1 << 2) | |
60 | #define LEFT_GUI (1 << 3) | |
61 | #define RIGHT_CNTR (1 << 4) | |
62 | #define RIGHT_SHIFT (1 << 5) | |
63 | #define RIGHT_ALT (1 << 6) | |
64 | #define RIGHT_GUI (1 << 7) | |
65 | ||
66 | /* Size of the keyboard buffer */ | |
67 | #define USB_KBD_BUFFER_LEN 0x20 | |
68 | ||
69 | /* Device name */ | |
00b7d6ec | 70 | #define DEVNAME "usbkbd" |
affae2bf | 71 | |
9a8c72a6 MV |
72 | /* Keyboard maps */ |
73 | static const unsigned char usb_kbd_numkey[] = { | |
00b7d6ec MV |
74 | '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', |
75 | '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']', | |
76 | '\\', '#', ';', '\'', '`', ',', '.', '/' | |
affae2bf | 77 | }; |
9a8c72a6 | 78 | static const unsigned char usb_kbd_numkey_shifted[] = { |
00b7d6ec MV |
79 | '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', |
80 | '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}', | |
81 | '|', '~', ':', '"', '~', '<', '>', '?' | |
affae2bf WD |
82 | }; |
83 | ||
d53da847 VP |
84 | static const unsigned char usb_kbd_num_keypad[] = { |
85 | '/', '*', '-', '+', '\r', | |
86 | '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', | |
87 | '.', 0, 0, 0, '=' | |
88 | }; | |
89 | ||
4151a400 AM |
90 | /* |
91 | * map arrow keys to ^F/^B ^N/^P, can't really use the proper | |
92 | * ANSI sequence for arrow keys because the queuing code breaks | |
93 | * when a single keypress expands to 3 queue elements | |
94 | */ | |
95 | static const unsigned char usb_kbd_arrow[] = { | |
96 | 0x6, 0x2, 0xe, 0x10 | |
97 | }; | |
98 | ||
9a8c72a6 MV |
99 | /* |
100 | * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this | |
101 | * order. See usb_kbd_setled() function! | |
102 | */ | |
103 | #define USB_KBD_NUMLOCK (1 << 0) | |
104 | #define USB_KBD_CAPSLOCK (1 << 1) | |
105 | #define USB_KBD_SCROLLLOCK (1 << 2) | |
106 | #define USB_KBD_CTRL (1 << 3) | |
48c8073e | 107 | |
9a8c72a6 MV |
108 | #define USB_KBD_LEDMASK \ |
109 | (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK) | |
48c8073e | 110 | |
9a8c72a6 MV |
111 | struct usb_kbd_pdata { |
112 | uint32_t repeat_delay; | |
affae2bf | 113 | |
9a8c72a6 MV |
114 | uint32_t usb_in_pointer; |
115 | uint32_t usb_out_pointer; | |
116 | uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN]; | |
48c8073e | 117 | |
d7475386 | 118 | uint8_t *new; |
9a8c72a6 | 119 | uint8_t old[8]; |
48c8073e | 120 | |
9a8c72a6 MV |
121 | uint8_t flags; |
122 | }; | |
48c8073e | 123 | |
9a8c72a6 MV |
124 | /* Generic keyboard event polling. */ |
125 | void usb_kbd_generic_poll(void) | |
affae2bf | 126 | { |
48c8073e MV |
127 | struct stdio_dev *dev; |
128 | struct usb_device *usb_kbd_dev; | |
9a8c72a6 MV |
129 | struct usb_kbd_pdata *data; |
130 | struct usb_interface *iface; | |
131 | struct usb_endpoint_descriptor *ep; | |
132 | int pipe; | |
133 | int maxp; | |
48c8073e | 134 | |
9a8c72a6 MV |
135 | /* Get the pointer to USB Keyboard device pointer */ |
136 | dev = stdio_get_by_name(DEVNAME); | |
48c8073e | 137 | usb_kbd_dev = (struct usb_device *)dev->priv; |
9a8c72a6 MV |
138 | data = usb_kbd_dev->privptr; |
139 | iface = &usb_kbd_dev->config.if_desc[0]; | |
140 | ep = &iface->ep_desc[0]; | |
141 | pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress); | |
48c8073e | 142 | |
9a8c72a6 MV |
143 | /* Submit a interrupt transfer request */ |
144 | maxp = usb_maxpacket(usb_kbd_dev, pipe); | |
145 | usb_submit_int_msg(usb_kbd_dev, pipe, data->new, | |
146 | maxp > 8 ? 8 : maxp, ep->bInterval); | |
affae2bf WD |
147 | } |
148 | ||
9a8c72a6 MV |
149 | /* Puts character in the queue and sets up the in and out pointer. */ |
150 | static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c) | |
affae2bf | 151 | { |
9a8c72a6 MV |
152 | if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) { |
153 | /* Check for buffer full. */ | |
154 | if (data->usb_out_pointer == 0) | |
155 | return; | |
affae2bf | 156 | |
9a8c72a6 MV |
157 | data->usb_in_pointer = 0; |
158 | } else { | |
159 | /* Check for buffer full. */ | |
160 | if (data->usb_in_pointer == data->usb_out_pointer - 1) | |
161 | return; | |
affae2bf | 162 | |
9a8c72a6 MV |
163 | data->usb_in_pointer++; |
164 | } | |
affae2bf | 165 | |
9a8c72a6 | 166 | data->usb_kbd_buffer[data->usb_in_pointer] = c; |
affae2bf WD |
167 | } |
168 | ||
9a8c72a6 MV |
169 | /* |
170 | * Set the LEDs. Since this is used in the irq routine, the control job is | |
171 | * issued with a timeout of 0. This means, that the job is queued without | |
172 | * waiting for job completion. | |
affae2bf | 173 | */ |
affae2bf WD |
174 | static void usb_kbd_setled(struct usb_device *dev) |
175 | { | |
9a8c72a6 MV |
176 | struct usb_interface *iface = &dev->config.if_desc[0]; |
177 | struct usb_kbd_pdata *data = dev->privptr; | |
178 | uint32_t leds = data->flags & USB_KBD_LEDMASK; | |
179 | ||
affae2bf WD |
180 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
181 | USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
8f8bd565 | 182 | 0x200, iface->desc.bInterfaceNumber, (void *)&leds, 1, 0); |
affae2bf WD |
183 | } |
184 | ||
9a8c72a6 | 185 | #define CAPITAL_MASK 0x20 |
affae2bf | 186 | /* Translate the scancode in ASCII */ |
9a8c72a6 MV |
187 | static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode, |
188 | unsigned char modifier, int pressed) | |
affae2bf | 189 | { |
9a8c72a6 | 190 | uint8_t keycode = 0; |
affae2bf | 191 | |
9a8c72a6 | 192 | /* Key released */ |
00b7d6ec | 193 | if (pressed == 0) { |
9a8c72a6 | 194 | data->repeat_delay = 0; |
affae2bf WD |
195 | return 0; |
196 | } | |
9a8c72a6 | 197 | |
00b7d6ec | 198 | if (pressed == 2) { |
9a8c72a6 MV |
199 | data->repeat_delay++; |
200 | if (data->repeat_delay < REPEAT_DELAY) | |
affae2bf | 201 | return 0; |
9a8c72a6 MV |
202 | |
203 | data->repeat_delay = REPEAT_DELAY; | |
affae2bf | 204 | } |
9a8c72a6 MV |
205 | |
206 | /* Alphanumeric values */ | |
207 | if ((scancode > 3) && (scancode <= 0x1d)) { | |
208 | keycode = scancode - 4 + 'a'; | |
209 | ||
210 | if (data->flags & USB_KBD_CAPSLOCK) | |
00b7d6ec | 211 | keycode &= ~CAPITAL_MASK; |
9a8c72a6 MV |
212 | |
213 | if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) { | |
214 | /* Handle CAPSLock + Shift pressed simultaneously */ | |
00b7d6ec | 215 | if (keycode & CAPITAL_MASK) |
00b7d6ec | 216 | keycode &= ~CAPITAL_MASK; |
affae2bf | 217 | else |
00b7d6ec | 218 | keycode |= CAPITAL_MASK; |
affae2bf WD |
219 | } |
220 | } | |
9a8c72a6 MV |
221 | |
222 | if ((scancode > 0x1d) && (scancode < 0x3a)) { | |
223 | /* Shift pressed */ | |
224 | if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) | |
225 | keycode = usb_kbd_numkey_shifted[scancode - 0x1e]; | |
226 | else | |
227 | keycode = usb_kbd_numkey[scancode - 0x1e]; | |
affae2bf | 228 | } |
4785a694 | 229 | |
4151a400 AM |
230 | /* Arrow keys */ |
231 | if ((scancode >= 0x4f) && (scancode <= 0x52)) | |
232 | keycode = usb_kbd_arrow[scancode - 0x4f]; | |
233 | ||
d53da847 VP |
234 | /* Numeric keypad */ |
235 | if ((scancode >= 0x54) && (scancode <= 0x67)) | |
236 | keycode = usb_kbd_num_keypad[scancode - 0x54]; | |
237 | ||
9a8c72a6 | 238 | if (data->flags & USB_KBD_CTRL) |
4785a694 ZW |
239 | keycode = scancode - 0x3; |
240 | ||
00b7d6ec MV |
241 | if (pressed == 1) { |
242 | if (scancode == NUM_LOCK) { | |
9a8c72a6 | 243 | data->flags ^= USB_KBD_NUMLOCK; |
affae2bf WD |
244 | return 1; |
245 | } | |
9a8c72a6 | 246 | |
00b7d6ec | 247 | if (scancode == CAPS_LOCK) { |
9a8c72a6 | 248 | data->flags ^= USB_KBD_CAPSLOCK; |
affae2bf WD |
249 | return 1; |
250 | } | |
00b7d6ec | 251 | if (scancode == SCROLL_LOCK) { |
9a8c72a6 | 252 | data->flags ^= USB_KBD_SCROLLLOCK; |
affae2bf WD |
253 | return 1; |
254 | } | |
255 | } | |
9a8c72a6 MV |
256 | |
257 | /* Report keycode if any */ | |
258 | if (keycode) { | |
ceb4972a | 259 | debug("%c", keycode); |
9a8c72a6 | 260 | usb_kbd_put_queue(data, keycode); |
affae2bf | 261 | } |
9a8c72a6 | 262 | |
affae2bf WD |
263 | return 0; |
264 | } | |
265 | ||
9a8c72a6 MV |
266 | static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up) |
267 | { | |
268 | uint32_t res = 0; | |
269 | struct usb_kbd_pdata *data = dev->privptr; | |
270 | uint8_t *new; | |
271 | uint8_t *old; | |
272 | ||
273 | if (up) { | |
274 | new = data->old; | |
275 | old = data->new; | |
276 | } else { | |
277 | new = data->new; | |
278 | old = data->old; | |
279 | } | |
280 | ||
281 | if ((old[i] > 3) && (memscan(new + 2, old[i], 6) == new + 8)) | |
282 | res |= usb_kbd_translate(data, old[i], data->new[0], up); | |
283 | ||
284 | return res; | |
285 | } | |
286 | ||
affae2bf | 287 | /* Interrupt service routine */ |
48c8073e | 288 | static int usb_kbd_irq_worker(struct usb_device *dev) |
affae2bf | 289 | { |
9a8c72a6 MV |
290 | struct usb_kbd_pdata *data = dev->privptr; |
291 | int i, res = 0; | |
4785a694 | 292 | |
9a8c72a6 MV |
293 | /* No combo key pressed */ |
294 | if (data->new[0] == 0x00) | |
295 | data->flags &= ~USB_KBD_CTRL; | |
296 | /* Left or Right Ctrl pressed */ | |
297 | else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR)) | |
298 | data->flags |= USB_KBD_CTRL; | |
00b7d6ec | 299 | |
9a8c72a6 MV |
300 | for (i = 2; i < 8; i++) { |
301 | res |= usb_kbd_service_key(dev, i, 0); | |
302 | res |= usb_kbd_service_key(dev, i, 1); | |
affae2bf | 303 | } |
00b7d6ec | 304 | |
9a8c72a6 MV |
305 | /* Key is still pressed */ |
306 | if ((data->new[2] > 3) && (data->old[2] == data->new[2])) | |
307 | res |= usb_kbd_translate(data, data->new[2], data->new[0], 2); | |
308 | ||
00b7d6ec | 309 | if (res == 1) |
affae2bf | 310 | usb_kbd_setled(dev); |
00b7d6ec | 311 | |
9a8c72a6 | 312 | memcpy(data->old, data->new, 8); |
00b7d6ec | 313 | |
9a8c72a6 | 314 | return 1; |
affae2bf WD |
315 | } |
316 | ||
9a8c72a6 | 317 | /* Keyboard interrupt handler */ |
48c8073e MV |
318 | static int usb_kbd_irq(struct usb_device *dev) |
319 | { | |
320 | if ((dev->irq_status != 0) || (dev->irq_act_len != 8)) { | |
ceb4972a VG |
321 | debug("USB KBD: Error %lX, len %d\n", |
322 | dev->irq_status, dev->irq_act_len); | |
48c8073e MV |
323 | return 1; |
324 | } | |
325 | ||
326 | return usb_kbd_irq_worker(dev); | |
327 | } | |
328 | ||
9a8c72a6 MV |
329 | /* Interrupt polling */ |
330 | static inline void usb_kbd_poll_for_event(struct usb_device *dev) | |
331 | { | |
332 | #if defined(CONFIG_SYS_USB_EVENT_POLL) | |
f9636e8d AM |
333 | struct usb_interface *iface; |
334 | struct usb_endpoint_descriptor *ep; | |
335 | struct usb_kbd_pdata *data; | |
336 | int pipe; | |
337 | int maxp; | |
338 | ||
339 | /* Get the pointer to USB Keyboard device pointer */ | |
340 | data = dev->privptr; | |
341 | iface = &dev->config.if_desc[0]; | |
342 | ep = &iface->ep_desc[0]; | |
343 | pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); | |
344 | ||
345 | /* Submit a interrupt transfer request */ | |
346 | maxp = usb_maxpacket(dev, pipe); | |
347 | usb_submit_int_msg(dev, pipe, &data->new[0], | |
348 | maxp > 8 ? 8 : maxp, ep->bInterval); | |
349 | ||
9a8c72a6 MV |
350 | usb_kbd_irq_worker(dev); |
351 | #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) | |
352 | struct usb_interface *iface; | |
353 | struct usb_kbd_pdata *data = dev->privptr; | |
354 | iface = &dev->config.if_desc[0]; | |
355 | usb_get_report(dev, iface->desc.bInterfaceNumber, | |
3d17308e | 356 | 1, 0, data->new, sizeof(data->new)); |
9a8c72a6 MV |
357 | if (memcmp(data->old, data->new, sizeof(data->new))) |
358 | usb_kbd_irq_worker(dev); | |
359 | #endif | |
360 | } | |
361 | ||
362 | /* test if a character is in the queue */ | |
363 | static int usb_kbd_testc(void) | |
364 | { | |
365 | struct stdio_dev *dev; | |
366 | struct usb_device *usb_kbd_dev; | |
367 | struct usb_kbd_pdata *data; | |
368 | ||
369 | dev = stdio_get_by_name(DEVNAME); | |
370 | usb_kbd_dev = (struct usb_device *)dev->priv; | |
371 | data = usb_kbd_dev->privptr; | |
372 | ||
373 | usb_kbd_poll_for_event(usb_kbd_dev); | |
374 | ||
375 | return !(data->usb_in_pointer == data->usb_out_pointer); | |
376 | } | |
377 | ||
378 | /* gets the character from the queue */ | |
379 | static int usb_kbd_getc(void) | |
380 | { | |
381 | struct stdio_dev *dev; | |
382 | struct usb_device *usb_kbd_dev; | |
383 | struct usb_kbd_pdata *data; | |
384 | ||
385 | dev = stdio_get_by_name(DEVNAME); | |
386 | usb_kbd_dev = (struct usb_device *)dev->priv; | |
387 | data = usb_kbd_dev->privptr; | |
388 | ||
389 | while (data->usb_in_pointer == data->usb_out_pointer) | |
390 | usb_kbd_poll_for_event(usb_kbd_dev); | |
391 | ||
392 | if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1) | |
393 | data->usb_out_pointer = 0; | |
394 | else | |
395 | data->usb_out_pointer++; | |
396 | ||
397 | return data->usb_kbd_buffer[data->usb_out_pointer]; | |
398 | } | |
399 | ||
400 | /* probes the USB device dev for keyboard type. */ | |
affae2bf WD |
401 | static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum) |
402 | { | |
8f8bd565 | 403 | struct usb_interface *iface; |
affae2bf | 404 | struct usb_endpoint_descriptor *ep; |
9a8c72a6 | 405 | struct usb_kbd_pdata *data; |
00b7d6ec | 406 | int pipe, maxp; |
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 AM |
445 | /* allocate input buffer aligned and sized to USB DMA alignment */ |
446 | data->new = memalign(USB_DMA_MINALIGN, roundup(8, USB_DMA_MINALIGN)); | |
447 | ||
9a8c72a6 MV |
448 | /* Insert private data into USB device structure */ |
449 | dev->privptr = data; | |
450 | ||
451 | /* Set IRQ handler */ | |
452 | dev->irq_handle = usb_kbd_irq; | |
453 | ||
affae2bf WD |
454 | pipe = usb_rcvintpipe(dev, ep->bEndpointAddress); |
455 | maxp = usb_maxpacket(dev, pipe); | |
9a8c72a6 MV |
456 | |
457 | /* We found a USB Keyboard, install it. */ | |
458 | usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0); | |
459 | ||
ceb4972a | 460 | debug("USB KBD: found set idle...\n"); |
9a8c72a6 MV |
461 | usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0); |
462 | ||
ceb4972a | 463 | debug("USB KBD: enable interrupt pipe...\n"); |
9a8c72a6 | 464 | usb_submit_int_msg(dev, pipe, data->new, maxp > 8 ? 8 : maxp, |
00b7d6ec | 465 | ep->bInterval); |
9a8c72a6 MV |
466 | |
467 | /* Success. */ | |
affae2bf WD |
468 | return 1; |
469 | } | |
470 | ||
9a8c72a6 MV |
471 | /* Search for keyboard and register it if found. */ |
472 | int drv_usb_kbd_init(void) | |
473 | { | |
474 | struct stdio_dev usb_kbd_dev, *old_dev; | |
475 | struct usb_device *dev; | |
476 | char *stdinname = getenv("stdin"); | |
477 | int error, i; | |
478 | ||
479 | /* Scan all USB Devices */ | |
480 | for (i = 0; i < USB_MAX_DEVICE; i++) { | |
481 | /* Get USB device. */ | |
482 | dev = usb_get_dev_index(i); | |
483 | if (!dev) | |
484 | return -1; | |
485 | ||
486 | if (dev->devnum == -1) | |
487 | continue; | |
488 | ||
489 | /* Try probing the keyboard */ | |
490 | if (usb_kbd_probe(dev, 0) != 1) | |
491 | continue; | |
492 | ||
493 | /* We found a keyboard, check if it is already registered. */ | |
ceb4972a | 494 | debug("USB KBD: found set up device.\n"); |
9a8c72a6 MV |
495 | old_dev = stdio_get_by_name(DEVNAME); |
496 | if (old_dev) { | |
497 | /* Already registered, just return ok. */ | |
ceb4972a | 498 | debug("USB KBD: is already registered.\n"); |
9a8c72a6 MV |
499 | return 1; |
500 | } | |
501 | ||
502 | /* Register the keyboard */ | |
ceb4972a | 503 | debug("USB KBD: register.\n"); |
9a8c72a6 MV |
504 | memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev)); |
505 | strcpy(usb_kbd_dev.name, DEVNAME); | |
506 | usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; | |
507 | usb_kbd_dev.putc = NULL; | |
508 | usb_kbd_dev.puts = NULL; | |
509 | usb_kbd_dev.getc = usb_kbd_getc; | |
510 | usb_kbd_dev.tstc = usb_kbd_testc; | |
511 | usb_kbd_dev.priv = (void *)dev; | |
512 | error = stdio_register(&usb_kbd_dev); | |
513 | if (error) | |
514 | return error; | |
515 | ||
fb3ef649 AM |
516 | #ifdef CONFIG_CONSOLE_MUX |
517 | error = iomux_doenv(stdin, stdinname); | |
518 | if (error) | |
519 | return error; | |
520 | #else | |
9a8c72a6 MV |
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; | |
fb3ef649 | 532 | #endif |
9a8c72a6 MV |
533 | |
534 | return 1; | |
535 | } | |
536 | ||
537 | /* No USB Keyboard found */ | |
538 | return -1; | |
539 | } | |
540 | ||
541 | /* Deregister the keyboard. */ | |
542 | int usb_kbd_deregister(void) | |
543 | { | |
544 | #ifdef CONFIG_SYS_STDIO_DEREGISTER | |
545 | return stdio_deregister(DEVNAME); | |
546 | #else | |
547 | return 1; | |
548 | #endif | |
549 | } |