psmcomm.c revision 28515619 
1/*
2 * Copyright � 1997 C. Scott Ananian
3 * Copyright � 1998-2000 Bruce Kalk
4 * Copyright � 2001 Stefan Gmeiner
5 * Copyright � 2002 Linuxcare Inc. David Kennedy
6 * Copyright � 2003 Fred Hucht
7 * Copyright � 2004 Arne Schwabe
8 *
9 * Permission to use, copy, modify, distribute, and sell this software
10 * and its documentation for any purpose is hereby granted without
11 * fee, provided that the above copyright notice appear in all copies
12 * and that both that copyright notice and this permission notice
13 * appear in supporting documentation, and that the name of Red Hat
14 * not be used in advertising or publicity pertaining to distribution
15 * of the software without specific, written prior permission.  Red
16 * Hat makes no representations about the suitability of this software
17 * for any purpose.  It is provided "as is" without express or implied
18 * warranty.
19 *
20 * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
21 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
22 * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
23 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
24 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
25 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
26 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
27 *
28 * Authors:
29 *      Stefan Gmeiner (riddlebox@freesurf.ch)
30 *      C. Scott Ananian (cananian@alumni.priceton.edu)
31 *      Bruce Kalk (kall@compass.com)
32 *      Linuxcare Inc. David Kennedy (dkennedy@linuxcare.com)
33 *      Fred Hucht (fred@thp.Uni-Duisburg.de)
34 *      Arne Schwabe <schwabe@uni-paderborn.de>
35 */
36
37#ifdef HAVE_CONFIG_H
38#include "config.h"
39#endif
40
41#include <xorg-server.h>
42#include <unistd.h>
43#include <sys/ioctl.h>
44#include <sys/mouse.h>
45#include <errno.h>
46#include <string.h>
47#include "synproto.h"
48#include "synapticsstr.h"
49#include "ps2comm.h"            /* ps2_print_ident() */
50#include <xf86.h>
51
52#define SYSCALL(call) while (((call) == -1) && (errno == EINTR))
53
54/*
55 * Identify Touchpad
56 * See also the SYN_ID_* macros
57 */
58static Bool
59psm_synaptics_identify(int fd, synapticshw_t * ident)
60{
61    int ret;
62
63    SYSCALL(ret = ioctl(fd, MOUSE_SYN_GETHWINFO, ident));
64    if (ret == 0)
65        return TRUE;
66    else
67        return FALSE;
68}
69
70/* This define is used in a ioctl but not in mouse.h :/ */
71#define PSM_LEVEL_NATIVE	2
72
73static Bool
74PSMQueryIsSynaptics(InputInfoPtr pInfo)
75{
76    int ret;
77    int level = PSM_LEVEL_NATIVE;
78    mousehw_t mhw;
79
80    /* Put the device in native protocol mode to be sure
81     * Otherwise HWINFO will not return the right id
82     * And we will need native mode anyway ...
83     */
84    SYSCALL(ret = ioctl(pInfo->fd, MOUSE_SETLEVEL, &level));
85    if (ret != 0) {
86        xf86IDrvMsg(pInfo, X_ERROR, "%s Can't set native mode\n", pInfo->name);
87        return FALSE;
88    }
89    SYSCALL(ret = ioctl(pInfo->fd, MOUSE_GETHWINFO, &mhw));
90    if (ret != 0) {
91        xf86IDrvMsg(pInfo, X_ERROR, "%s Can't get hardware info\n",
92                    pInfo->name);
93        return FALSE;
94    }
95
96    if (mhw.model == MOUSE_MODEL_SYNAPTICS) {
97        return TRUE;
98    }
99    else {
100        xf86IDrvMsg(pInfo, X_ERROR,
101                    "%s Found no Synaptics, found Mouse model %d instead\n",
102                    pInfo->name, mhw.model);
103        return FALSE;
104    }
105}
106
107static void
108convert_hw_info(const synapticshw_t * psm_ident,
109                struct PS2SynapticsHwInfo *synhw)
110{
111    memset(synhw, 0, sizeof(*synhw));
112    synhw->model_id = ((psm_ident->infoRot180 << 23) |
113                       (psm_ident->infoPortrait << 22) |
114                       (psm_ident->infoSensor << 16) |
115                       (psm_ident->infoHardware << 9) |
116                       (psm_ident->infoNewAbs << 7) |
117                       (psm_ident->capPen << 6) |
118                       (psm_ident->infoSimplC << 5) |
119                       (psm_ident->infoGeometry));
120    synhw->capabilities = ((psm_ident->capExtended << 23) |
121                           (psm_ident->capPassthrough << 7) |
122                           (psm_ident->capSleep << 4) |
123                           (psm_ident->capFourButtons << 3) |
124                           (psm_ident->capMultiFinger << 1) |
125                           (psm_ident->capPalmDetect));
126    synhw->ext_cap = 0;
127    synhw->identity = ((psm_ident->infoMajor) |
128                       (0x47 << 8) | (psm_ident->infoMinor << 16));
129}
130
131static Bool
132PSMQueryHardware(InputInfoPtr pInfo)
133{
134    synapticshw_t psm_ident;
135    struct PS2SynapticsHwInfo *synhw;
136    SynapticsPrivate *priv;
137
138    priv = (SynapticsPrivate *) pInfo->private;
139
140    if (!priv->proto_data)
141        priv->proto_data = calloc(1, sizeof(struct PS2SynapticsHwInfo));
142    synhw = (struct PS2SynapticsHwInfo *) priv->proto_data;
143
144    /* is the synaptics touchpad active? */
145    if (!PSMQueryIsSynaptics(pInfo))
146        return FALSE;
147
148    xf86IDrvMsg(pInfo, X_PROBED, "synaptics touchpad found\n");
149
150    if (!psm_synaptics_identify(pInfo->fd, &psm_ident))
151        return FALSE;
152
153    convert_hw_info(&psm_ident, synhw);
154
155    ps2_print_ident(pInfo, synhw);
156
157    return TRUE;
158}
159
160static Bool
161PSMReadHwState(InputInfoPtr pInfo,
162               struct CommData *comm, struct SynapticsHwState *hwRet)
163{
164    return PS2ReadHwStateProto(pInfo, &psm_proto_operations, comm, hwRet);
165}
166
167struct SynapticsProtocolOperations psm_proto_operations = {
168    NULL,
169    NULL,
170    PSMQueryHardware,
171    PSMReadHwState,
172    NULL,
173    NULL
174};
175