diff options
Diffstat (limited to 'usr.sbin/bluetooth/bthidd/kbd.c')
-rw-r--r-- | usr.sbin/bluetooth/bthidd/kbd.c | 580 |
1 files changed, 580 insertions, 0 deletions
diff --git a/usr.sbin/bluetooth/bthidd/kbd.c b/usr.sbin/bluetooth/bthidd/kbd.c new file mode 100644 index 0000000..e1ab870 --- /dev/null +++ b/usr.sbin/bluetooth/bthidd/kbd.c @@ -0,0 +1,580 @@ +/* + * kbd.c + */ + +/*- + * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: kbd.c,v 1.4 2006/09/07 21:06:53 max Exp $ + * $FreeBSD$ + */ + +#include <sys/consio.h> +#include <sys/ioctl.h> +#include <sys/kbio.h> +#include <sys/queue.h> +#include <sys/wait.h> +#include <assert.h> +#include <bluetooth.h> +#include <dev/usb/usb.h> +#include <dev/usb/usbhid.h> +#include <dev/vkbd/vkbd_var.h> +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <unistd.h> +#include <usbhid.h> +#include "bthid_config.h" +#include "bthidd.h" +#include "kbd.h" + +static void kbd_write(bitstr_t *m, int32_t fb, int32_t make, int32_t fd); +static int32_t kbd_xlate(int32_t code, int32_t make, int32_t *b, int32_t const *eob); + +/* + * HID code to PS/2 set 1 code translation table. + * + * http://www.microsoft.com/whdc/device/input/Scancode.mspx + * + * The table only contains "make" (key pressed) codes. + * The "break" (key released) code is generated as "make" | 0x80 + */ + +#define E0PREFIX (1 << 31) +#define NOBREAK (1 << 30) +#define CODEMASK (~(E0PREFIX|NOBREAK)) + +static int32_t const x[] = +{ +/*==================================================*/ +/* Name HID code Make Break*/ +/*==================================================*/ +/* No Event 00 */ -1, /* None */ +/* Overrun Error 01 */ NOBREAK|0xFF, /* None */ +/* POST Fail 02 */ NOBREAK|0xFC, /* None */ +/* ErrorUndefined 03 */ -1, /* Unassigned */ +/* a A 04 */ 0x1E, /* 9E */ +/* b B 05 */ 0x30, /* B0 */ +/* c C 06 */ 0x2E, /* AE */ +/* d D 07 */ 0x20, /* A0 */ +/* e E 08 */ 0x12, /* 92 */ +/* f F 09 */ 0x21, /* A1 */ +/* g G 0A */ 0x22, /* A2 */ +/* h H 0B */ 0x23, /* A3 */ +/* i I 0C */ 0x17, /* 97 */ +/* j J 0D */ 0x24, /* A4 */ +/* k K 0E */ 0x25, /* A5 */ +/* l L 0F */ 0x26, /* A6 */ +/* m M 10 */ 0x32, /* B2 */ +/* n N 11 */ 0x31, /* B1 */ +/* o O 12 */ 0x18, /* 98 */ +/* p P 13 */ 0x19, /* 99 */ +/* q Q 14 */ 0x10, /* 90 */ +/* r R 15 */ 0x13, /* 93 */ +/* s S 16 */ 0x1F, /* 9F */ +/* t T 17 */ 0x14, /* 94 */ +/* u U 18 */ 0x16, /* 96 */ +/* v V 19 */ 0x2F, /* AF */ +/* w W 1A */ 0x11, /* 91 */ +/* x X 1B */ 0x2D, /* AD */ +/* y Y 1C */ 0x15, /* 95 */ +/* z Z 1D */ 0x2C, /* AC */ +/* 1 ! 1E */ 0x02, /* 82 */ +/* 2 @ 1F */ 0x03, /* 83 */ +/* 3 # 20 */ 0x04, /* 84 */ +/* 4 $ 21 */ 0x05, /* 85 */ +/* 5 % 22 */ 0x06, /* 86 */ +/* 6 ^ 23 */ 0x07, /* 87 */ +/* 7 & 24 */ 0x08, /* 88 */ +/* 8 * 25 */ 0x09, /* 89 */ +/* 9 ( 26 */ 0x0A, /* 8A */ +/* 0 ) 27 */ 0x0B, /* 8B */ +/* Return 28 */ 0x1C, /* 9C */ +/* Escape 29 */ 0x01, /* 81 */ +/* Backspace 2A */ 0x0E, /* 8E */ +/* Tab 2B */ 0x0F, /* 8F */ +/* Space 2C */ 0x39, /* B9 */ +/* - _ 2D */ 0x0C, /* 8C */ +/* = + 2E */ 0x0D, /* 8D */ +/* [ { 2F */ 0x1A, /* 9A */ +/* ] } 30 */ 0x1B, /* 9B */ +/* \ | 31 */ 0x2B, /* AB */ +/* Europe 1 32 */ 0x2B, /* AB */ +/* ; : 33 */ 0x27, /* A7 */ +/* " ' 34 */ 0x28, /* A8 */ +/* ` ~ 35 */ 0x29, /* A9 */ +/* comma < 36 */ 0x33, /* B3 */ +/* . > 37 */ 0x34, /* B4 */ +/* / ? 38 */ 0x35, /* B5 */ +/* Caps Lock 39 */ 0x3A, /* BA */ +/* F1 3A */ 0x3B, /* BB */ +/* F2 3B */ 0x3C, /* BC */ +/* F3 3C */ 0x3D, /* BD */ +/* F4 3D */ 0x3E, /* BE */ +/* F5 3E */ 0x3F, /* BF */ +/* F6 3F */ 0x40, /* C0 */ +/* F7 40 */ 0x41, /* C1 */ +/* F8 41 */ 0x42, /* C2 */ +/* F9 42 */ 0x43, /* C3 */ +/* F10 43 */ 0x44, /* C4 */ +/* F11 44 */ 0x57, /* D7 */ +/* F12 45 */ 0x58, /* D8 */ +/* Print Screen 46 */ E0PREFIX|0x37, /* E0 B7 */ +/* Scroll Lock 47 */ 0x46, /* C6 */ +#if 0 +/* Break (Ctrl-Pause) 48 */ E0 46 E0 C6, /* None */ +/* Pause 48 */ E1 1D 45 E1 9D C5, /* None */ +#else +/* Break (Ctrl-Pause)/Pause 48 */ NOBREAK /* Special case */, /* None */ +#endif +/* Insert 49 */ E0PREFIX|0x52, /* E0 D2 */ +/* Home 4A */ E0PREFIX|0x47, /* E0 C7 */ +/* Page Up 4B */ E0PREFIX|0x49, /* E0 C9 */ +/* Delete 4C */ E0PREFIX|0x53, /* E0 D3 */ +/* End 4D */ E0PREFIX|0x4F, /* E0 CF */ +/* Page Down 4E */ E0PREFIX|0x51, /* E0 D1 */ +/* Right Arrow 4F */ E0PREFIX|0x4D, /* E0 CD */ +/* Left Arrow 50 */ E0PREFIX|0x4B, /* E0 CB */ +/* Down Arrow 51 */ E0PREFIX|0x50, /* E0 D0 */ +/* Up Arrow 52 */ E0PREFIX|0x48, /* E0 C8 */ +/* Num Lock 53 */ 0x45, /* C5 */ +/* Keypad / 54 */ E0PREFIX|0x35, /* E0 B5 */ +/* Keypad * 55 */ 0x37, /* B7 */ +/* Keypad - 56 */ 0x4A, /* CA */ +/* Keypad + 57 */ 0x4E, /* CE */ +/* Keypad Enter 58 */ E0PREFIX|0x1C, /* E0 9C */ +/* Keypad 1 End 59 */ 0x4F, /* CF */ +/* Keypad 2 Down 5A */ 0x50, /* D0 */ +/* Keypad 3 PageDn 5B */ 0x51, /* D1 */ +/* Keypad 4 Left 5C */ 0x4B, /* CB */ +/* Keypad 5 5D */ 0x4C, /* CC */ +/* Keypad 6 Right 5E */ 0x4D, /* CD */ +/* Keypad 7 Home 5F */ 0x47, /* C7 */ +/* Keypad 8 Up 60 */ 0x48, /* C8 */ +/* Keypad 9 PageUp 61 */ 0x49, /* C9 */ +/* Keypad 0 Insert 62 */ 0x52, /* D2 */ +/* Keypad . Delete 63 */ 0x53, /* D3 */ +/* Europe 2 64 */ 0x56, /* D6 */ +/* App 65 */ E0PREFIX|0x5D, /* E0 DD */ +/* Keyboard Power 66 */ E0PREFIX|0x5E, /* E0 DE */ +/* Keypad = 67 */ 0x59, /* D9 */ +/* F13 68 */ 0x64, /* E4 */ +/* F14 69 */ 0x65, /* E5 */ +/* F15 6A */ 0x66, /* E6 */ +/* F16 6B */ 0x67, /* E7 */ +/* F17 6C */ 0x68, /* E8 */ +/* F18 6D */ 0x69, /* E9 */ +/* F19 6E */ 0x6A, /* EA */ +/* F20 6F */ 0x6B, /* EB */ +/* F21 70 */ 0x6C, /* EC */ +/* F22 71 */ 0x6D, /* ED */ +/* F23 72 */ 0x6E, /* EE */ +/* F24 73 */ 0x76, /* F6 */ +/* Keyboard Execute 74 */ -1, /* Unassigned */ +/* Keyboard Help 75 */ -1, /* Unassigned */ +/* Keyboard Menu 76 */ -1, /* Unassigned */ +/* Keyboard Select 77 */ -1, /* Unassigned */ +/* Keyboard Stop 78 */ -1, /* Unassigned */ +/* Keyboard Again 79 */ -1, /* Unassigned */ +/* Keyboard Undo 7A */ -1, /* Unassigned */ +/* Keyboard Cut 7B */ -1, /* Unassigned */ +/* Keyboard Copy 7C */ -1, /* Unassigned */ +/* Keyboard Paste 7D */ -1, /* Unassigned */ +/* Keyboard Find 7E */ -1, /* Unassigned */ +/* Keyboard Mute 7F */ -1, /* Unassigned */ +/* Keyboard Volume Up 80 */ -1, /* Unassigned */ +/* Keyboard Volume Dn 81 */ -1, /* Unassigned */ +/* Keyboard Locking Caps Lock 82 */ -1, /* Unassigned */ +/* Keyboard Locking Num Lock 83 */ -1, /* Unassigned */ +/* Keyboard Locking Scroll Lock 84 */ -1, /* Unassigned */ +/* Keypad comma 85 */ 0x7E, /* FE */ +/* Keyboard Equal Sign 86 */ -1, /* Unassigned */ +/* Keyboard Int'l 1 87 */ 0x73, /* F3 */ +/* Keyboard Int'l 2 88 */ 0x70, /* F0 */ +/* Keyboard Int'l 2 89 */ 0x7D, /* FD */ +/* Keyboard Int'l 4 8A */ 0x79, /* F9 */ +/* Keyboard Int'l 5 8B */ 0x7B, /* FB */ +/* Keyboard Int'l 6 8C */ 0x5C, /* DC */ +/* Keyboard Int'l 7 8D */ -1, /* Unassigned */ +/* Keyboard Int'l 8 8E */ -1, /* Unassigned */ +/* Keyboard Int'l 9 8F */ -1, /* Unassigned */ +/* Keyboard Lang 1 90 */ NOBREAK|0xF2, /* None */ +/* Keyboard Lang 2 91 */ NOBREAK|0xF1, /* None */ +/* Keyboard Lang 3 92 */ 0x78, /* F8 */ +/* Keyboard Lang 4 93 */ 0x77, /* F7 */ +/* Keyboard Lang 5 94 */ 0x76, /* F6 */ +/* Keyboard Lang 6 95 */ -1, /* Unassigned */ +/* Keyboard Lang 7 96 */ -1, /* Unassigned */ +/* Keyboard Lang 8 97 */ -1, /* Unassigned */ +/* Keyboard Lang 9 98 */ -1, /* Unassigned */ +/* Keyboard Alternate Erase 99 */ -1, /* Unassigned */ +/* Keyboard SysReq/Attention 9A */ -1, /* Unassigned */ +/* Keyboard Cancel 9B */ -1, /* Unassigned */ +/* Keyboard Clear 9C */ -1, /* Unassigned */ +/* Keyboard Prior 9D */ -1, /* Unassigned */ +/* Keyboard Return 9E */ -1, /* Unassigned */ +/* Keyboard Separator 9F */ -1, /* Unassigned */ +/* Keyboard Out A0 */ -1, /* Unassigned */ +/* Keyboard Oper A1 */ -1, /* Unassigned */ +/* Keyboard Clear/Again A2 */ -1, /* Unassigned */ +/* Keyboard CrSel/Props A3 */ -1, /* Unassigned */ +/* Keyboard ExSel A4 */ -1, /* Unassigned */ +/* Reserved A5 */ -1, /* Reserved */ +/* Reserved A6 */ -1, /* Reserved */ +/* Reserved A7 */ -1, /* Reserved */ +/* Reserved A8 */ -1, /* Reserved */ +/* Reserved A9 */ -1, /* Reserved */ +/* Reserved AA */ -1, /* Reserved */ +/* Reserved AB */ -1, /* Reserved */ +/* Reserved AC */ -1, /* Reserved */ +/* Reserved AD */ -1, /* Reserved */ +/* Reserved AE */ -1, /* Reserved */ +/* Reserved AF */ -1, /* Reserved */ +/* Reserved B0 */ -1, /* Reserved */ +/* Reserved B1 */ -1, /* Reserved */ +/* Reserved B2 */ -1, /* Reserved */ +/* Reserved B3 */ -1, /* Reserved */ +/* Reserved B4 */ -1, /* Reserved */ +/* Reserved B5 */ -1, /* Reserved */ +/* Reserved B6 */ -1, /* Reserved */ +/* Reserved B7 */ -1, /* Reserved */ +/* Reserved B8 */ -1, /* Reserved */ +/* Reserved B9 */ -1, /* Reserved */ +/* Reserved BA */ -1, /* Reserved */ +/* Reserved BB */ -1, /* Reserved */ +/* Reserved BC */ -1, /* Reserved */ +/* Reserved BD */ -1, /* Reserved */ +/* Reserved BE */ -1, /* Reserved */ +/* Reserved BF */ -1, /* Reserved */ +/* Reserved C0 */ -1, /* Reserved */ +/* Reserved C1 */ -1, /* Reserved */ +/* Reserved C2 */ -1, /* Reserved */ +/* Reserved C3 */ -1, /* Reserved */ +/* Reserved C4 */ -1, /* Reserved */ +/* Reserved C5 */ -1, /* Reserved */ +/* Reserved C6 */ -1, /* Reserved */ +/* Reserved C7 */ -1, /* Reserved */ +/* Reserved C8 */ -1, /* Reserved */ +/* Reserved C9 */ -1, /* Reserved */ +/* Reserved CA */ -1, /* Reserved */ +/* Reserved CB */ -1, /* Reserved */ +/* Reserved CC */ -1, /* Reserved */ +/* Reserved CD */ -1, /* Reserved */ +/* Reserved CE */ -1, /* Reserved */ +/* Reserved CF */ -1, /* Reserved */ +/* Reserved D0 */ -1, /* Reserved */ +/* Reserved D1 */ -1, /* Reserved */ +/* Reserved D2 */ -1, /* Reserved */ +/* Reserved D3 */ -1, /* Reserved */ +/* Reserved D4 */ -1, /* Reserved */ +/* Reserved D5 */ -1, /* Reserved */ +/* Reserved D6 */ -1, /* Reserved */ +/* Reserved D7 */ -1, /* Reserved */ +/* Reserved D8 */ -1, /* Reserved */ +/* Reserved D9 */ -1, /* Reserved */ +/* Reserved DA */ -1, /* Reserved */ +/* Reserved DB */ -1, /* Reserved */ +/* Reserved DC */ -1, /* Reserved */ +/* Reserved DD */ -1, /* Reserved */ +/* Reserved DE */ -1, /* Reserved */ +/* Reserved DF */ -1, /* Reserved */ +/* Left Control E0 */ 0x1D, /* 9D */ +/* Left Shift E1 */ 0x2A, /* AA */ +/* Left Alt E2 */ 0x38, /* B8 */ +/* Left GUI E3 */ E0PREFIX|0x5B, /* E0 DB */ +/* Right Control E4 */ E0PREFIX|0x1D, /* E0 9D */ +/* Right Shift E5 */ 0x36, /* B6 */ +/* Right Alt E6 */ E0PREFIX|0x38, /* E0 B8 */ +/* Right GUI E7 */ E0PREFIX|0x5C /* E0 DC */ +}; + +#define xsize ((int32_t)(sizeof(x)/sizeof(x[0]))) + +/* + * Get a max HID keycode (aligned) + */ + +int32_t +kbd_maxkey(void) +{ + return (xsize); +} + +/* + * Process keys + */ + +int32_t +kbd_process_keys(bthid_session_p s) +{ + bitstr_t diff[bitstr_size(xsize)]; + int32_t f1, f2, i; + + assert(s != NULL); + assert(s->srv != NULL); + + /* Check if the new keys have been pressed */ + bit_ffs(s->keys1, xsize, &f1); + + /* Check if old keys still pressed */ + bit_ffs(s->keys2, xsize, &f2); + + if (f1 == -1) { + /* no new key pressed */ + if (f2 != -1) { + /* release old keys */ + kbd_write(s->keys2, f2, 0, s->vkbd); + memset(s->keys2, 0, bitstr_size(xsize)); + } + + return (0); + } + + if (f2 == -1) { + /* no old keys, but new keys pressed */ + assert(f1 != -1); + + memcpy(s->keys2, s->keys1, bitstr_size(xsize)); + kbd_write(s->keys1, f1, 1, s->vkbd); + memset(s->keys1, 0, bitstr_size(xsize)); + + return (0); + } + + /* new keys got pressed, old keys got released */ + memset(diff, 0, bitstr_size(xsize)); + + for (i = f2; i < xsize; i ++) { + if (bit_test(s->keys2, i)) { + if (!bit_test(s->keys1, i)) { + bit_clear(s->keys2, i); + bit_set(diff, i); + } + } + } + + for (i = f1; i < xsize; i++) { + if (bit_test(s->keys1, i)) { + if (!bit_test(s->keys2, i)) + bit_set(s->keys2, i); + else + bit_clear(s->keys1, i); + } + } + + bit_ffs(diff, xsize, &f2); + if (f2 > 0) + kbd_write(diff, f2, 0, s->vkbd); + + bit_ffs(s->keys1, xsize, &f1); + if (f1 > 0) { + kbd_write(s->keys1, f1, 1, s->vkbd); + memset(s->keys1, 0, bitstr_size(xsize)); + } + + return (0); +} + +/* + * Translate given keymap and write keyscodes + */ + +static void +kbd_write(bitstr_t *m, int32_t fb, int32_t make, int32_t fd) +{ + int32_t i, *b, *eob, n, buf[64]; + + b = buf; + eob = b + sizeof(buf)/sizeof(buf[0]); + i = fb; + + while (i < xsize) { + if (bit_test(m, i)) { + n = kbd_xlate(i, make, b, eob); + if (n == -1) { + write(fd, buf, (b - buf) * sizeof(buf[0])); + b = buf; + continue; + } + + b += n; + } + + i ++; + } + + if (b != buf) + write(fd, buf, (b - buf) * sizeof(buf[0])); +} + +/* + * Translate HID code into PS/2 code and put codes into buffer b. + * Returns the number of codes put in b. Return -1 if buffer has not + * enough space. + */ + +#undef PUT +#define PUT(c, n, b, eob) \ +do { \ + if ((b) >= (eob)) \ + return (-1); \ + *(b) = (c); \ + (b) ++; \ + (n) ++; \ +} while (0) + +static int32_t +kbd_xlate(int32_t code, int32_t make, int32_t *b, int32_t const *eob) +{ + int32_t c, n; + + n = 0; + + if (code >= xsize) + return (0); /* HID code is not in the table */ + + /* Handle special case - Pause/Break */ + if (code == 0x48) { + if (!make) + return (0); /* No break code */ + +#if 0 +XXX FIXME + if (ctrl_is_pressed) { + /* Break (Ctrl-Pause) */ + PUT(0xe0, n, b, eob); + PUT(0x46, n, b, eob); + PUT(0xe0, n, b, eob); + PUT(0xc6, n, b, eob); + } else { + /* Pause */ + PUT(0xe1, n, b, eob); + PUT(0x1d, n, b, eob); + PUT(0x45, n, b, eob); + PUT(0xe1, n, b, eob); + PUT(0x9d, n, b, eob); + PUT(0xc5, n, b, eob); + } +#endif + + return (n); + } + + if ((c = x[code]) == -1) + return (0); /* HID code translation is not defined */ + + if (make) { + if (c & E0PREFIX) + PUT(0xe0, n, b, eob); + + PUT((c & CODEMASK), n, b, eob); + } else if (!(c & NOBREAK)) { + if (c & E0PREFIX) + PUT(0xe0, n, b, eob); + + PUT((0x80|(c & CODEMASK)), n, b, eob); + } + + return (n); +} + +/* + * Process status change from vkbd(4) + */ + +int32_t +kbd_status_changed(bthid_session_p s, uint8_t *data, int32_t len) +{ + vkbd_status_t st; + uint8_t leds, report_id; + hid_device_p hid_device; + hid_data_t d; + hid_item_t h; + + assert(s != NULL); + assert(len == sizeof(vkbd_status_t)); + + memcpy(&st, data, sizeof(st)); + leds = 0; + report_id = NO_REPORT_ID; + + hid_device = get_hid_device(&s->bdaddr); + assert(hid_device != NULL); + + for (d = hid_start_parse(hid_device->desc, 1 << hid_output, -1); + hid_get_item(d, &h) > 0; ) { + if (HID_PAGE(h.usage) == HUP_LEDS) { + if (report_id == NO_REPORT_ID) + report_id = h.report_ID; + else if (h.report_ID != report_id) + syslog(LOG_WARNING, "Output HID report IDs " \ + "for %s do not match: %d vs. %d. " \ + "Please report", + bt_ntoa(&s->bdaddr, NULL), + h.report_ID, report_id); + + switch(HID_USAGE(h.usage)) { + case 0x01: /* Num Lock LED */ + if (st.leds & LED_NUM) + hid_set_data(&leds, &h, 1); + break; + + case 0x02: /* Caps Lock LED */ + if (st.leds & LED_CAP) + hid_set_data(&leds, &h, 1); + break; + + case 0x03: /* Scroll Lock LED */ + if (st.leds & LED_SCR) + hid_set_data(&leds, &h, 1); + break; + + /* XXX add other LEDs ? */ + } + } + } + hid_end_parse(d); + + data[0] = 0xa2; /* DATA output (HID output report) */ + + if (report_id != NO_REPORT_ID) { + data[1] = report_id; + data[2] = leds; + len = 3; + } else { + data[1] = leds; + len = 2; + } + + write(s->intr, data, len); + + return (0); +} + |