blob: c34fd5c786a2e93e3b49c3694a8a3702351fa98e [file] [log] [blame]
wdenkaffae2b2002-08-17 09:36:01 +00001/*
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 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
wdenkaffae2b2002-08-17 09:36:01 +00009 */
10#include <common.h>
Marek Vasut9a8c72a2011-10-10 16:34:26 +010011#include <malloc.h>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020012#include <stdio_dev.h>
Christian Eggersc9182612008-05-21 22:12:00 +020013#include <asm/byteorder.h>
wdenkaffae2b2002-08-17 09:36:01 +000014
wdenkaffae2b2002-08-17 09:36:01 +000015#include <usb.h>
16
wdenkaffae2b2002-08-17 09:36:01 +000017/*
Marek Vasut00b7d6e2011-10-10 05:34:25 +000018 * If overwrite_console returns 1, the stdin, stderr and stdout
wdenkaffae2b2002-08-17 09:36:01 +000019 * are switched to the serial port, else the settings in the
20 * environment are used
21 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020022#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
Marek Vasut00b7d6e2011-10-10 05:34:25 +000023extern int overwrite_console(void);
wdenkaffae2b2002-08-17 09:36:01 +000024#else
Marek Vasut00b7d6e2011-10-10 05:34:25 +000025int overwrite_console(void)
wdenkaffae2b2002-08-17 09:36:01 +000026{
Marek Vasut00b7d6e2011-10-10 05:34:25 +000027 return 0;
wdenkaffae2b2002-08-17 09:36:01 +000028}
29#endif
30
Marek Vasut9a8c72a2011-10-10 16:34:26 +010031/* Keyboard sampling rate */
32#define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */
33#define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
wdenkaffae2b2002-08-17 09:36:01 +000034
35#define NUM_LOCK 0x53
Marek Vasut00b7d6e2011-10-10 05:34:25 +000036#define CAPS_LOCK 0x39
37#define SCROLL_LOCK 0x47
wdenkaffae2b2002-08-17 09:36:01 +000038
wdenkaffae2b2002-08-17 09:36:01 +000039/* Modifier bits */
Marek Vasut9a8c72a2011-10-10 16:34:26 +010040#define LEFT_CNTR (1 << 0)
41#define LEFT_SHIFT (1 << 1)
42#define LEFT_ALT (1 << 2)
43#define LEFT_GUI (1 << 3)
44#define RIGHT_CNTR (1 << 4)
45#define RIGHT_SHIFT (1 << 5)
46#define RIGHT_ALT (1 << 6)
47#define RIGHT_GUI (1 << 7)
wdenkaffae2b2002-08-17 09:36:01 +000048
Marek Vasut9a8c72a2011-10-10 16:34:26 +010049/* Size of the keyboard buffer */
50#define USB_KBD_BUFFER_LEN 0x20
wdenkaffae2b2002-08-17 09:36:01 +000051
Marek Vasut9a8c72a2011-10-10 16:34:26 +010052/* Device name */
Marek Vasut00b7d6e2011-10-10 05:34:25 +000053#define DEVNAME "usbkbd"
wdenkaffae2b2002-08-17 09:36:01 +000054
Marek Vasut9a8c72a2011-10-10 16:34:26 +010055/* Keyboard maps */
56static const unsigned char usb_kbd_numkey[] = {
Marek Vasut00b7d6e2011-10-10 05:34:25 +000057 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
58 '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']',
59 '\\', '#', ';', '\'', '`', ',', '.', '/'
wdenkaffae2b2002-08-17 09:36:01 +000060};
Marek Vasut9a8c72a2011-10-10 16:34:26 +010061static const unsigned char usb_kbd_numkey_shifted[] = {
Marek Vasut00b7d6e2011-10-10 05:34:25 +000062 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
63 '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}',
64 '|', '~', ':', '"', '~', '<', '>', '?'
wdenkaffae2b2002-08-17 09:36:01 +000065};
66
Vincent Palatind53da842012-01-09 12:59:36 +000067static const unsigned char usb_kbd_num_keypad[] = {
68 '/', '*', '-', '+', '\r',
69 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
70 '.', 0, 0, 0, '='
71};
72
Marek Vasut9a8c72a2011-10-10 16:34:26 +010073/*
Allen Martin4151a402012-11-06 13:26:03 -080074 * map arrow keys to ^F/^B ^N/^P, can't really use the proper
75 * ANSI sequence for arrow keys because the queuing code breaks
76 * when a single keypress expands to 3 queue elements
77 */
78static const unsigned char usb_kbd_arrow[] = {
79 0x6, 0x2, 0xe, 0x10
80};
81
82/*
Marek Vasut9a8c72a2011-10-10 16:34:26 +010083 * NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this
84 * order. See usb_kbd_setled() function!
85 */
86#define USB_KBD_NUMLOCK (1 << 0)
87#define USB_KBD_CAPSLOCK (1 << 1)
88#define USB_KBD_SCROLLLOCK (1 << 2)
89#define USB_KBD_CTRL (1 << 3)
Marek Vasut48c80732011-09-25 20:00:37 +010090
Marek Vasut9a8c72a2011-10-10 16:34:26 +010091#define USB_KBD_LEDMASK \
92 (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
93
Adrian Cox08a98b82014-04-10 14:02:44 +010094/*
95 * USB Keyboard reports are 8 bytes in boot protocol.
96 * Appendix B of HID Device Class Definition 1.11
97 */
98#define USB_KBD_BOOT_REPORT_SIZE 8
99
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100100struct usb_kbd_pdata {
101 uint32_t repeat_delay;
102
103 uint32_t usb_in_pointer;
104 uint32_t usb_out_pointer;
105 uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN];
106
Allen Martind7475382012-10-24 08:32:04 +0000107 uint8_t *new;
Adrian Cox08a98b82014-04-10 14:02:44 +0100108 uint8_t old[USB_KBD_BOOT_REPORT_SIZE];
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100109
110 uint8_t flags;
111};
112
Jim Lin07551f22013-08-13 19:04:22 +0800113extern int __maybe_unused net_busy_flag;
114
115/* The period of time between two calls of usb_kbd_testc(). */
116static unsigned long __maybe_unused kbd_testc_tms;
117
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100118/* Generic keyboard event polling. */
119void usb_kbd_generic_poll(void)
120{
121 struct stdio_dev *dev;
122 struct usb_device *usb_kbd_dev;
123 struct usb_kbd_pdata *data;
124 struct usb_interface *iface;
125 struct usb_endpoint_descriptor *ep;
126 int pipe;
127 int maxp;
128
129 /* Get the pointer to USB Keyboard device pointer */
130 dev = stdio_get_by_name(DEVNAME);
131 usb_kbd_dev = (struct usb_device *)dev->priv;
132 data = usb_kbd_dev->privptr;
133 iface = &usb_kbd_dev->config.if_desc[0];
134 ep = &iface->ep_desc[0];
135 pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress);
136
137 /* Submit a interrupt transfer request */
138 maxp = usb_maxpacket(usb_kbd_dev, pipe);
139 usb_submit_int_msg(usb_kbd_dev, pipe, data->new,
Adrian Cox08a98b82014-04-10 14:02:44 +0100140 min(maxp, USB_KBD_BOOT_REPORT_SIZE),
141 ep->bInterval);
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100142}
143
144/* Puts character in the queue and sets up the in and out pointer. */
145static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c)
146{
147 if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) {
148 /* Check for buffer full. */
149 if (data->usb_out_pointer == 0)
150 return;
151
152 data->usb_in_pointer = 0;
153 } else {
154 /* Check for buffer full. */
155 if (data->usb_in_pointer == data->usb_out_pointer - 1)
156 return;
157
158 data->usb_in_pointer++;
159 }
160
161 data->usb_kbd_buffer[data->usb_in_pointer] = c;
162}
163
164/*
165 * Set the LEDs. Since this is used in the irq routine, the control job is
166 * issued with a timeout of 0. This means, that the job is queued without
167 * waiting for job completion.
168 */
169static void usb_kbd_setled(struct usb_device *dev)
170{
171 struct usb_interface *iface = &dev->config.if_desc[0];
172 struct usb_kbd_pdata *data = dev->privptr;
173 uint32_t leds = data->flags & USB_KBD_LEDMASK;
174
175 usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
176 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
177 0x200, iface->desc.bInterfaceNumber, (void *)&leds, 1, 0);
178}
179
180#define CAPITAL_MASK 0x20
181/* Translate the scancode in ASCII */
182static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode,
183 unsigned char modifier, int pressed)
184{
185 uint8_t keycode = 0;
186
187 /* Key released */
188 if (pressed == 0) {
189 data->repeat_delay = 0;
190 return 0;
191 }
192
193 if (pressed == 2) {
194 data->repeat_delay++;
195 if (data->repeat_delay < REPEAT_DELAY)
196 return 0;
197
198 data->repeat_delay = REPEAT_DELAY;
199 }
200
201 /* Alphanumeric values */
202 if ((scancode > 3) && (scancode <= 0x1d)) {
203 keycode = scancode - 4 + 'a';
204
205 if (data->flags & USB_KBD_CAPSLOCK)
206 keycode &= ~CAPITAL_MASK;
207
208 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) {
209 /* Handle CAPSLock + Shift pressed simultaneously */
210 if (keycode & CAPITAL_MASK)
211 keycode &= ~CAPITAL_MASK;
212 else
213 keycode |= CAPITAL_MASK;
214 }
215 }
216
217 if ((scancode > 0x1d) && (scancode < 0x3a)) {
218 /* Shift pressed */
219 if (modifier & (LEFT_SHIFT | RIGHT_SHIFT))
220 keycode = usb_kbd_numkey_shifted[scancode - 0x1e];
221 else
222 keycode = usb_kbd_numkey[scancode - 0x1e];
223 }
224
Allen Martin4151a402012-11-06 13:26:03 -0800225 /* Arrow keys */
226 if ((scancode >= 0x4f) && (scancode <= 0x52))
227 keycode = usb_kbd_arrow[scancode - 0x4f];
228
Vincent Palatind53da842012-01-09 12:59:36 +0000229 /* Numeric keypad */
230 if ((scancode >= 0x54) && (scancode <= 0x67))
231 keycode = usb_kbd_num_keypad[scancode - 0x54];
232
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100233 if (data->flags & USB_KBD_CTRL)
234 keycode = scancode - 0x3;
235
236 if (pressed == 1) {
237 if (scancode == NUM_LOCK) {
238 data->flags ^= USB_KBD_NUMLOCK;
239 return 1;
240 }
241
242 if (scancode == CAPS_LOCK) {
243 data->flags ^= USB_KBD_CAPSLOCK;
244 return 1;
245 }
246 if (scancode == SCROLL_LOCK) {
247 data->flags ^= USB_KBD_SCROLLLOCK;
248 return 1;
249 }
250 }
251
252 /* Report keycode if any */
253 if (keycode) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530254 debug("%c", keycode);
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100255 usb_kbd_put_queue(data, keycode);
256 }
257
258 return 0;
259}
260
261static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up)
262{
263 uint32_t res = 0;
264 struct usb_kbd_pdata *data = dev->privptr;
265 uint8_t *new;
266 uint8_t *old;
267
268 if (up) {
269 new = data->old;
270 old = data->new;
271 } else {
272 new = data->new;
273 old = data->old;
274 }
275
Adrian Cox08a98b82014-04-10 14:02:44 +0100276 if ((old[i] > 3) &&
277 (memscan(new + 2, old[i], USB_KBD_BOOT_REPORT_SIZE - 2) ==
278 new + USB_KBD_BOOT_REPORT_SIZE)) {
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100279 res |= usb_kbd_translate(data, old[i], data->new[0], up);
Adrian Cox08a98b82014-04-10 14:02:44 +0100280 }
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100281
282 return res;
283}
284
285/* Interrupt service routine */
286static int usb_kbd_irq_worker(struct usb_device *dev)
287{
288 struct usb_kbd_pdata *data = dev->privptr;
289 int i, res = 0;
290
291 /* No combo key pressed */
292 if (data->new[0] == 0x00)
293 data->flags &= ~USB_KBD_CTRL;
294 /* Left or Right Ctrl pressed */
295 else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR))
296 data->flags |= USB_KBD_CTRL;
297
Adrian Cox08a98b82014-04-10 14:02:44 +0100298 for (i = 2; i < USB_KBD_BOOT_REPORT_SIZE; i++) {
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100299 res |= usb_kbd_service_key(dev, i, 0);
300 res |= usb_kbd_service_key(dev, i, 1);
301 }
302
303 /* Key is still pressed */
304 if ((data->new[2] > 3) && (data->old[2] == data->new[2]))
305 res |= usb_kbd_translate(data, data->new[2], data->new[0], 2);
306
307 if (res == 1)
308 usb_kbd_setled(dev);
309
Adrian Cox08a98b82014-04-10 14:02:44 +0100310 memcpy(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE);
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100311
312 return 1;
313}
314
315/* Keyboard interrupt handler */
316static int usb_kbd_irq(struct usb_device *dev)
317{
Adrian Cox08a98b82014-04-10 14:02:44 +0100318 if ((dev->irq_status != 0) ||
319 (dev->irq_act_len != USB_KBD_BOOT_REPORT_SIZE)) {
Vivek Gautamceb49722013-04-12 16:34:33 +0530320 debug("USB KBD: Error %lX, len %d\n",
321 dev->irq_status, dev->irq_act_len);
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100322 return 1;
323 }
324
325 return usb_kbd_irq_worker(dev);
326}
327
328/* Interrupt polling */
Marek Vasut48c80732011-09-25 20:00:37 +0100329static inline void usb_kbd_poll_for_event(struct usb_device *dev)
330{
331#if defined(CONFIG_SYS_USB_EVENT_POLL)
amartin@nvidia.comf9636e82011-12-20 14:56:16 +0000332 struct usb_interface *iface;
333 struct usb_endpoint_descriptor *ep;
334 struct usb_kbd_pdata *data;
335 int pipe;
336 int maxp;
337
338 /* Get the pointer to USB Keyboard device pointer */
339 data = dev->privptr;
340 iface = &dev->config.if_desc[0];
341 ep = &iface->ep_desc[0];
342 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
343
344 /* Submit a interrupt transfer request */
345 maxp = usb_maxpacket(dev, pipe);
346 usb_submit_int_msg(dev, pipe, &data->new[0],
Adrian Cox08a98b82014-04-10 14:02:44 +0100347 min(maxp, USB_KBD_BOOT_REPORT_SIZE),
348 ep->bInterval);
amartin@nvidia.comf9636e82011-12-20 14:56:16 +0000349
Marek Vasut48c80732011-09-25 20:00:37 +0100350 usb_kbd_irq_worker(dev);
351#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
352 struct usb_interface *iface;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100353 struct usb_kbd_pdata *data = dev->privptr;
Marek Vasut48c80732011-09-25 20:00:37 +0100354 iface = &dev->config.if_desc[0];
355 usb_get_report(dev, iface->desc.bInterfaceNumber,
Adrian Cox08a98b82014-04-10 14:02:44 +0100356 1, 0, data->new, USB_KBD_BOOT_REPORT_SIZE);
357 if (memcmp(data->old, data->new, USB_KBD_BOOT_REPORT_SIZE))
Marek Vasut48c80732011-09-25 20:00:37 +0100358 usb_kbd_irq_worker(dev);
359#endif
360}
361
wdenkaffae2b2002-08-17 09:36:01 +0000362/* test if a character is in the queue */
Simon Glass709ea542014-07-23 06:54:59 -0600363static int usb_kbd_testc(struct stdio_dev *sdev)
wdenkaffae2b2002-08-17 09:36:01 +0000364{
Marek Vasut48c80732011-09-25 20:00:37 +0100365 struct stdio_dev *dev;
366 struct usb_device *usb_kbd_dev;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100367 struct usb_kbd_pdata *data;
Marek Vasut48c80732011-09-25 20:00:37 +0100368
Jim Linc95e2b92013-08-26 20:21:09 +0800369#ifdef CONFIG_CMD_NET
370 /*
371 * If net_busy_flag is 1, NET transfer is running,
372 * then we check key-pressed every second (first check may be
373 * less than 1 second) to improve TFTP booting performance.
374 */
375 if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ))
376 return 0;
377 kbd_testc_tms = get_timer(0);
378#endif
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100379 dev = stdio_get_by_name(DEVNAME);
Marek Vasut48c80732011-09-25 20:00:37 +0100380 usb_kbd_dev = (struct usb_device *)dev->priv;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100381 data = usb_kbd_dev->privptr;
Marek Vasut48c80732011-09-25 20:00:37 +0100382
383 usb_kbd_poll_for_event(usb_kbd_dev);
384
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100385 return !(data->usb_in_pointer == data->usb_out_pointer);
wdenkaffae2b2002-08-17 09:36:01 +0000386}
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100387
wdenkaffae2b2002-08-17 09:36:01 +0000388/* gets the character from the queue */
Simon Glass709ea542014-07-23 06:54:59 -0600389static int usb_kbd_getc(struct stdio_dev *sdev)
wdenkaffae2b2002-08-17 09:36:01 +0000390{
Marek Vasut48c80732011-09-25 20:00:37 +0100391 struct stdio_dev *dev;
392 struct usb_device *usb_kbd_dev;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100393 struct usb_kbd_pdata *data;
Marek Vasut48c80732011-09-25 20:00:37 +0100394
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100395 dev = stdio_get_by_name(DEVNAME);
Marek Vasut48c80732011-09-25 20:00:37 +0100396 usb_kbd_dev = (struct usb_device *)dev->priv;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100397 data = usb_kbd_dev->privptr;
Marek Vasut48c80732011-09-25 20:00:37 +0100398
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100399 while (data->usb_in_pointer == data->usb_out_pointer)
Marek Vasut48c80732011-09-25 20:00:37 +0100400 usb_kbd_poll_for_event(usb_kbd_dev);
401
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100402 if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1)
403 data->usb_out_pointer = 0;
wdenkaffae2b2002-08-17 09:36:01 +0000404 else
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100405 data->usb_out_pointer++;
wdenkaffae2b2002-08-17 09:36:01 +0000406
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100407 return data->usb_kbd_buffer[data->usb_out_pointer];
wdenkaffae2b2002-08-17 09:36:01 +0000408}
409
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100410/* probes the USB device dev for keyboard type. */
411static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
412{
413 struct usb_interface *iface;
414 struct usb_endpoint_descriptor *ep;
415 struct usb_kbd_pdata *data;
416 int pipe, maxp;
wdenkaffae2b2002-08-17 09:36:01 +0000417
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100418 if (dev->descriptor.bNumConfigurations != 1)
419 return 0;
420
421 iface = &dev->config.if_desc[ifnum];
422
423 if (iface->desc.bInterfaceClass != 3)
424 return 0;
425
426 if (iface->desc.bInterfaceSubClass != 1)
427 return 0;
428
429 if (iface->desc.bInterfaceProtocol != 1)
430 return 0;
431
432 if (iface->desc.bNumEndpoints != 1)
433 return 0;
434
435 ep = &iface->ep_desc[0];
436
437 /* Check if endpoint 1 is interrupt endpoint */
438 if (!(ep->bEndpointAddress & 0x80))
439 return 0;
440
441 if ((ep->bmAttributes & 3) != 3)
442 return 0;
443
Vivek Gautamceb49722013-04-12 16:34:33 +0530444 debug("USB KBD: found set protocol...\n");
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100445
446 data = malloc(sizeof(struct usb_kbd_pdata));
447 if (!data) {
448 printf("USB KBD: Error allocating private data\n");
449 return 0;
450 }
451
452 /* Clear private data */
453 memset(data, 0, sizeof(struct usb_kbd_pdata));
454
Allen Martind7475382012-10-24 08:32:04 +0000455 /* allocate input buffer aligned and sized to USB DMA alignment */
Adrian Cox08a98b82014-04-10 14:02:44 +0100456 data->new = memalign(USB_DMA_MINALIGN,
457 roundup(USB_KBD_BOOT_REPORT_SIZE, USB_DMA_MINALIGN));
Allen Martind7475382012-10-24 08:32:04 +0000458
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100459 /* Insert private data into USB device structure */
460 dev->privptr = data;
461
462 /* Set IRQ handler */
463 dev->irq_handle = usb_kbd_irq;
464
465 pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
466 maxp = usb_maxpacket(dev, pipe);
467
468 /* We found a USB Keyboard, install it. */
469 usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
470
Vivek Gautamceb49722013-04-12 16:34:33 +0530471 debug("USB KBD: found set idle...\n");
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100472 usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0);
473
Vivek Gautamceb49722013-04-12 16:34:33 +0530474 debug("USB KBD: enable interrupt pipe...\n");
Adrian Cox08a98b82014-04-10 14:02:44 +0100475 if (usb_submit_int_msg(dev, pipe, data->new,
476 min(maxp, USB_KBD_BOOT_REPORT_SIZE),
Vincent Palatin5da2dc92013-05-10 19:48:59 -0700477 ep->bInterval) < 0) {
478 printf("Failed to get keyboard state from device %04x:%04x\n",
479 dev->descriptor.idVendor, dev->descriptor.idProduct);
480 /* Abort, we don't want to use that non-functional keyboard. */
481 return 0;
482 }
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100483
484 /* Success. */
485 return 1;
486}
487
488/* Search for keyboard and register it if found. */
wdenkaffae2b2002-08-17 09:36:01 +0000489int drv_usb_kbd_init(void)
490{
Marek Vasut00b7d6e2011-10-10 05:34:25 +0000491 struct stdio_dev usb_kbd_dev, *old_dev;
wdenkaffae2b2002-08-17 09:36:01 +0000492 struct usb_device *dev;
Marek Vasut00b7d6e2011-10-10 05:34:25 +0000493 char *stdinname = getenv("stdin");
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100494 int error, i;
wdenkaffae2b2002-08-17 09:36:01 +0000495
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100496 /* Scan all USB Devices */
497 for (i = 0; i < USB_MAX_DEVICE; i++) {
498 /* Get USB device. */
499 dev = usb_get_dev_index(i);
500 if (!dev)
Ryan CHEN3b20fd82008-08-20 13:00:17 -0400501 return -1;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100502
503 if (dev->devnum == -1)
504 continue;
505
506 /* Try probing the keyboard */
507 if (usb_kbd_probe(dev, 0) != 1)
508 continue;
509
510 /* We found a keyboard, check if it is already registered. */
Vivek Gautamceb49722013-04-12 16:34:33 +0530511 debug("USB KBD: found set up device.\n");
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100512 old_dev = stdio_get_by_name(DEVNAME);
513 if (old_dev) {
514 /* Already registered, just return ok. */
Vivek Gautamceb49722013-04-12 16:34:33 +0530515 debug("USB KBD: is already registered.\n");
Vincent Palatin09defbc2013-05-10 19:48:58 -0700516 usb_kbd_deregister();
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100517 return 1;
wdenkaffae2b2002-08-17 09:36:01 +0000518 }
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100519
520 /* Register the keyboard */
Vivek Gautamceb49722013-04-12 16:34:33 +0530521 debug("USB KBD: register.\n");
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100522 memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
523 strcpy(usb_kbd_dev.name, DEVNAME);
524 usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100525 usb_kbd_dev.getc = usb_kbd_getc;
526 usb_kbd_dev.tstc = usb_kbd_testc;
527 usb_kbd_dev.priv = (void *)dev;
528 error = stdio_register(&usb_kbd_dev);
529 if (error)
530 return error;
531
amartin@nvidia.comfb3ef642011-12-23 10:29:48 +0000532#ifdef CONFIG_CONSOLE_MUX
533 error = iomux_doenv(stdin, stdinname);
534 if (error)
535 return error;
536#else
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100537 /* Check if this is the standard input device. */
538 if (strcmp(stdinname, DEVNAME))
539 return 1;
540
541 /* Reassign the console */
542 if (overwrite_console())
543 return 1;
544
545 error = console_assign(stdin, DEVNAME);
546 if (error)
547 return error;
amartin@nvidia.comfb3ef642011-12-23 10:29:48 +0000548#endif
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100549
550 return 1;
wdenkaffae2b2002-08-17 09:36:01 +0000551 }
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100552
553 /* No USB Keyboard found */
wdenkaffae2b2002-08-17 09:36:01 +0000554 return -1;
555}
556
Marek Vasut9a8c72a2011-10-10 16:34:26 +0100557/* Deregister the keyboard. */
wdenkaffae2b2002-08-17 09:36:01 +0000558int usb_kbd_deregister(void)
559{
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200560#ifdef CONFIG_SYS_STDIO_DEREGISTER
561 return stdio_deregister(DEVNAME);
Jean-Christophe PLAGNIOL-VILLARDfea91ed2008-12-02 21:58:04 +0100562#else
563 return 1;
564#endif
wdenkaffae2b2002-08-17 09:36:01 +0000565}