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| Rev | Author | Line No. | Line |
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| 3661 | vana | 1 | /* |
| 2 | * Copyright (c) 2006 Ondrej Palkovsky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <ipc/ipc.h> |
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| 30 | #include <async.h> |
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| 31 | #include <kbd.h> |
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| 32 | #include <keys.h> |
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| 33 | |||
| 34 | #define i8042_MOUSE_DATA 0x20 |
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| 35 | |||
| 36 | #define BUFSIZE 3 |
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| 37 | |||
| 38 | typedef struct { |
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| 39 | union { |
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| 40 | unsigned char data[BUFSIZE]; |
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| 41 | struct { |
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| 42 | unsigned leftbtn : 1; |
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| 43 | unsigned rightbtn : 1; |
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| 44 | unsigned middlebtn : 1; |
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| 45 | unsigned isone : 1; /* Always one */ |
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| 46 | unsigned xsign : 1; |
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| 47 | unsigned ysign : 1; |
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| 48 | unsigned xovfl : 1; |
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| 49 | unsigned yovfl : 1; |
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| 50 | unsigned char x; |
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| 51 | unsigned char y; |
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| 52 | } val; |
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| 53 | }u; |
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| 54 | }ps2packet_t; |
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| 55 | |||
| 56 | static ps2packet_t buf; |
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| 57 | static int bufpos = 0; |
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| 58 | static int leftbtn = 0; |
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| 59 | static int rightbtn = 0; |
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| 60 | static int middlebtn = 0; |
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| 61 | |||
| 62 | /** Convert 9-bit 2-complement signed number to integer */ |
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| 63 | static int bit9toint(int sign, unsigned char data) |
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| 64 | { |
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| 65 | int tmp; |
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| 66 | |||
| 67 | if (!sign) |
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| 68 | return data; |
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| 69 | |||
| 70 | tmp = ((unsigned char)~data) + 1; |
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| 71 | return -tmp; |
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| 72 | } |
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| 73 | |||
| 74 | /** Process mouse data |
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| 75 | * |
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| 76 | * @return True if mouse command was recognized and processed |
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| 77 | */ |
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| 78 | int mouse_arch_process(int phoneid, ipc_call_t *call) |
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| 79 | { |
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| 80 | int status = IPC_GET_ARG1(*call); |
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| 81 | int data = IPC_GET_ARG2(*call); |
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| 82 | int x,y; |
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| 83 | |||
| 84 | if (!(status & i8042_MOUSE_DATA)) |
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| 85 | return 0; |
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| 86 | |||
| 87 | /* Check that we have not lost synchronization */ |
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| 88 | if (bufpos == 0 && !(data & 0x8)) |
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| 89 | return 1; /* Synchro lost, ignore byte */ |
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| 90 | |||
| 91 | buf.u.data[bufpos++] = data; |
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| 92 | if (bufpos == BUFSIZE) { |
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| 93 | bufpos = 0; |
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| 94 | if (phoneid != -1) { |
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| 95 | if (buf.u.val.leftbtn ^ leftbtn) { |
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| 96 | leftbtn = buf.u.val.leftbtn; |
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| 97 | async_msg_1(phoneid, KBD_MS_LEFT, leftbtn); |
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| 98 | } |
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| 99 | if (buf.u.val.rightbtn & rightbtn) { |
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| 100 | rightbtn = buf.u.val.middlebtn; |
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| 101 | async_msg_1(phoneid, KBD_MS_RIGHT, rightbtn); |
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| 102 | } |
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| 103 | if (buf.u.val.rightbtn & rightbtn) { |
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| 104 | middlebtn = buf.u.val.middlebtn; |
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| 105 | async_msg_1(phoneid, KBD_MS_MIDDLE, middlebtn); |
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| 106 | } |
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| 107 | x = bit9toint(buf.u.val.xsign, buf.u.val.x); |
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| 108 | y = bit9toint(buf.u.val.ysign, buf.u.val.y); |
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| 109 | if (x || y) |
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| 110 | async_msg_2(phoneid, KBD_MS_MOVE, (ipcarg_t)x, |
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| 111 | (ipcarg_t)(-y)); |
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| 112 | } |
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| 113 | } |
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| 114 | |||
| 115 | |||
| 116 | return 1; |
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| 117 | } |