422da1cd9e763839381267f0c3395100cf9df648
[releases.git] / logips2pp.c
1 /*
2  * Logitech PS/2++ mouse driver
3  *
4  * Copyright (c) 1999-2003 Vojtech Pavlik <vojtech@suse.cz>
5  * Copyright (c) 2003 Eric Wong <eric@yhbt.net>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published by
9  * the Free Software Foundation.
10  */
11
12 #include <linux/input.h>
13 #include <linux/serio.h>
14 #include <linux/libps2.h>
15 #include "psmouse.h"
16 #include "logips2pp.h"
17
18 /* Logitech mouse types */
19 #define PS2PP_KIND_WHEEL        1
20 #define PS2PP_KIND_MX           2
21 #define PS2PP_KIND_TP3          3
22 #define PS2PP_KIND_TRACKMAN     4
23
24 /* Logitech mouse features */
25 #define PS2PP_WHEEL             0x01
26 #define PS2PP_HWHEEL            0x02
27 #define PS2PP_SIDE_BTN          0x04
28 #define PS2PP_EXTRA_BTN         0x08
29 #define PS2PP_TASK_BTN          0x10
30 #define PS2PP_NAV_BTN           0x20
31
32 struct ps2pp_info {
33         u8 model;
34         u8 kind;
35         u16 features;
36 };
37
38 /*
39  * Process a PS2++ or PS2T++ packet.
40  */
41
42 static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse)
43 {
44         struct input_dev *dev = psmouse->dev;
45         unsigned char *packet = psmouse->packet;
46
47         if (psmouse->pktcnt < 3)
48                 return PSMOUSE_GOOD_DATA;
49
50 /*
51  * Full packet accumulated, process it
52  */
53
54         if ((packet[0] & 0x48) == 0x48 && (packet[1] & 0x02) == 0x02) {
55
56                 /* Logitech extended packet */
57                 switch ((packet[1] >> 4) | (packet[0] & 0x30)) {
58
59                 case 0x0d: /* Mouse extra info */
60
61                         input_report_rel(dev, packet[2] & 0x80 ? REL_HWHEEL : REL_WHEEL,
62                                 (int) (packet[2] & 8) - (int) (packet[2] & 7));
63                         input_report_key(dev, BTN_SIDE, (packet[2] >> 4) & 1);
64                         input_report_key(dev, BTN_EXTRA, (packet[2] >> 5) & 1);
65
66                         break;
67
68                 case 0x0e: /* buttons 4, 5, 6, 7, 8, 9, 10 info */
69
70                         input_report_key(dev, BTN_SIDE, (packet[2]) & 1);
71                         input_report_key(dev, BTN_EXTRA, (packet[2] >> 1) & 1);
72                         input_report_key(dev, BTN_BACK, (packet[2] >> 3) & 1);
73                         input_report_key(dev, BTN_FORWARD, (packet[2] >> 4) & 1);
74                         input_report_key(dev, BTN_TASK, (packet[2] >> 2) & 1);
75
76                         break;
77
78                 case 0x0f: /* TouchPad extra info */
79
80                         input_report_rel(dev, packet[2] & 0x08 ? REL_HWHEEL : REL_WHEEL,
81                                 (int) ((packet[2] >> 4) & 8) - (int) ((packet[2] >> 4) & 7));
82                         packet[0] = packet[2] | 0x08;
83                         break;
84
85                 default:
86                         psmouse_dbg(psmouse,
87                                     "Received PS2++ packet #%x, but don't know how to handle.\n",
88                                     (packet[1] >> 4) | (packet[0] & 0x30));
89                         break;
90                 }
91         } else {
92                 /* Standard PS/2 motion data */
93                 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
94                 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
95         }
96
97         input_report_key(dev, BTN_LEFT,    packet[0]       & 1);
98         input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
99         input_report_key(dev, BTN_RIGHT,  (packet[0] >> 1) & 1);
100
101         input_sync(dev);
102
103         return PSMOUSE_FULL_PACKET;
104
105 }
106
107 /*
108  * ps2pp_cmd() sends a PS2++ command, sliced into two bit
109  * pieces through the SETRES command. This is needed to send extended
110  * commands to mice on notebooks that try to understand the PS/2 protocol
111  * Ugly.
112  */
113
114 static int ps2pp_cmd(struct psmouse *psmouse, unsigned char *param, unsigned char command)
115 {
116         if (psmouse_sliced_command(psmouse, command))
117                 return -1;
118
119         if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_POLL | 0x0300))
120                 return -1;
121
122         return 0;
123 }
124
125 /*
126  * SmartScroll / CruiseControl for some newer Logitech mice Defaults to
127  * enabled if we do nothing to it. Of course I put this in because I want it
128  * disabled :P
129  * 1 - enabled (if previously disabled, also default)
130  * 0 - disabled
131  */
132
133 static void ps2pp_set_smartscroll(struct psmouse *psmouse, bool smartscroll)
134 {
135         struct ps2dev *ps2dev = &psmouse->ps2dev;
136         unsigned char param[4];
137
138         ps2pp_cmd(psmouse, param, 0x32);
139
140         param[0] = 0;
141         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
142         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
143         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
144
145         param[0] = smartscroll;
146         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
147 }
148
149 static ssize_t ps2pp_attr_show_smartscroll(struct psmouse *psmouse,
150                                            void *data, char *buf)
151 {
152         return sprintf(buf, "%d\n", psmouse->smartscroll);
153 }
154
155 static ssize_t ps2pp_attr_set_smartscroll(struct psmouse *psmouse, void *data,
156                                           const char *buf, size_t count)
157 {
158         unsigned int value;
159         int err;
160
161         err = kstrtouint(buf, 10, &value);
162         if (err)
163                 return err;
164
165         if (value > 1)
166                 return -EINVAL;
167
168         ps2pp_set_smartscroll(psmouse, value);
169         psmouse->smartscroll = value;
170         return count;
171 }
172
173 PSMOUSE_DEFINE_ATTR(smartscroll, S_IWUSR | S_IRUGO, NULL,
174                         ps2pp_attr_show_smartscroll, ps2pp_attr_set_smartscroll);
175
176 /*
177  * Support 800 dpi resolution _only_ if the user wants it (there are good
178  * reasons to not use it even if the mouse supports it, and of course there are
179  * also good reasons to use it, let the user decide).
180  */
181
182 static void ps2pp_set_resolution(struct psmouse *psmouse, unsigned int resolution)
183 {
184         if (resolution > 400) {
185                 struct ps2dev *ps2dev = &psmouse->ps2dev;
186                 unsigned char param = 3;
187
188                 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
189                 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
190                 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
191                 ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
192                 psmouse->resolution = 800;
193         } else
194                 psmouse_set_resolution(psmouse, resolution);
195 }
196
197 static void ps2pp_disconnect(struct psmouse *psmouse)
198 {
199         device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll.dattr);
200 }
201
202 static const struct ps2pp_info *get_model_info(unsigned char model)
203 {
204         static const struct ps2pp_info ps2pp_list[] = {
205                 {  1,   0,                      0 },    /* Simple 2-button mouse */
206                 { 12,   0,                      PS2PP_SIDE_BTN},
207                 { 13,   0,                      0 },
208                 { 15,   PS2PP_KIND_MX,                                  /* MX1000 */
209                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
210                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },
211                 { 40,   0,                      PS2PP_SIDE_BTN },
212                 { 41,   0,                      PS2PP_SIDE_BTN },
213                 { 42,   0,                      PS2PP_SIDE_BTN },
214                 { 43,   0,                      PS2PP_SIDE_BTN },
215                 { 50,   0,                      0 },
216                 { 51,   0,                      0 },
217                 { 52,   PS2PP_KIND_WHEEL,       PS2PP_SIDE_BTN | PS2PP_WHEEL },
218                 { 53,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
219                 { 56,   PS2PP_KIND_WHEEL,       PS2PP_SIDE_BTN | PS2PP_WHEEL }, /* Cordless MouseMan Wheel */
220                 { 61,   PS2PP_KIND_MX,                                  /* MX700 */
221                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
222                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },
223                 { 66,   PS2PP_KIND_MX,                                  /* MX3100 receiver */
224                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
225                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },
226                 { 72,   PS2PP_KIND_TRACKMAN,    0 },                    /* T-CH11: TrackMan Marble */
227                 { 73,   PS2PP_KIND_TRACKMAN,    PS2PP_SIDE_BTN },       /* TrackMan FX */
228                 { 75,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
229                 { 76,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
230                 { 79,   PS2PP_KIND_TRACKMAN,    PS2PP_WHEEL },          /* TrackMan with wheel */
231                 { 80,   PS2PP_KIND_WHEEL,       PS2PP_SIDE_BTN | PS2PP_WHEEL },
232                 { 81,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
233                 { 83,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
234                 { 85,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
235                 { 86,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
236                 { 87,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
237                 { 88,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
238                 { 96,   0,                      0 },
239                 { 97,   PS2PP_KIND_TP3,         PS2PP_WHEEL | PS2PP_HWHEEL },
240                 { 99,   PS2PP_KIND_WHEEL,       PS2PP_WHEEL },
241                 { 100,  PS2PP_KIND_MX,                                  /* MX510 */
242                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
243                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },
244                 { 111,  PS2PP_KIND_MX,  PS2PP_WHEEL | PS2PP_SIDE_BTN }, /* MX300 reports task button as side */
245                 { 112,  PS2PP_KIND_MX,                                  /* MX500 */
246                                 PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
247                                 PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },
248                 { 114,  PS2PP_KIND_MX,                                  /* MX310 */
249                                 PS2PP_WHEEL | PS2PP_SIDE_BTN |
250                                 PS2PP_TASK_BTN | PS2PP_EXTRA_BTN }
251         };
252         int i;
253
254         for (i = 0; i < ARRAY_SIZE(ps2pp_list); i++)
255                 if (model == ps2pp_list[i].model)
256                         return &ps2pp_list[i];
257
258         return NULL;
259 }
260
261 /*
262  * Set up input device's properties based on the detected mouse model.
263  */
264
265 static void ps2pp_set_model_properties(struct psmouse *psmouse,
266                                        const struct ps2pp_info *model_info,
267                                        bool using_ps2pp)
268 {
269         struct input_dev *input_dev = psmouse->dev;
270
271         if (model_info->features & PS2PP_SIDE_BTN)
272                 __set_bit(BTN_SIDE, input_dev->keybit);
273
274         if (model_info->features & PS2PP_EXTRA_BTN)
275                 __set_bit(BTN_EXTRA, input_dev->keybit);
276
277         if (model_info->features & PS2PP_TASK_BTN)
278                 __set_bit(BTN_TASK, input_dev->keybit);
279
280         if (model_info->features & PS2PP_NAV_BTN) {
281                 __set_bit(BTN_FORWARD, input_dev->keybit);
282                 __set_bit(BTN_BACK, input_dev->keybit);
283         }
284
285         if (model_info->features & PS2PP_WHEEL)
286                 __set_bit(REL_WHEEL, input_dev->relbit);
287
288         if (model_info->features & PS2PP_HWHEEL)
289                 __set_bit(REL_HWHEEL, input_dev->relbit);
290
291         switch (model_info->kind) {
292
293         case PS2PP_KIND_WHEEL:
294                 psmouse->name = "Wheel Mouse";
295                 break;
296
297         case PS2PP_KIND_MX:
298                 psmouse->name = "MX Mouse";
299                 break;
300
301         case PS2PP_KIND_TP3:
302                 psmouse->name = "TouchPad 3";
303                 break;
304
305         case PS2PP_KIND_TRACKMAN:
306                 psmouse->name = "TrackMan";
307                 break;
308
309         default:
310                 /*
311                  * Set name to "Mouse" only when using PS2++,
312                  * otherwise let other protocols define suitable
313                  * name
314                  */
315                 if (using_ps2pp)
316                         psmouse->name = "Mouse";
317                 break;
318         }
319 }
320
321
322 /*
323  * Logitech magic init. Detect whether the mouse is a Logitech one
324  * and its exact model and try turning on extended protocol for ones
325  * that support it.
326  */
327
328 int ps2pp_detect(struct psmouse *psmouse, bool set_properties)
329 {
330         struct ps2dev *ps2dev = &psmouse->ps2dev;
331         unsigned char param[4];
332         unsigned char model, buttons;
333         const struct ps2pp_info *model_info;
334         bool use_ps2pp = false;
335         int error;
336
337         param[0] = 0;
338         ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
339         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
340         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
341         ps2_command(ps2dev,  NULL, PSMOUSE_CMD_SETSCALE11);
342         param[1] = 0;
343         ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
344
345         model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);
346         buttons = param[1];
347
348         if (!model || !buttons)
349                 return -1;
350
351         model_info = get_model_info(model);
352         if (model_info) {
353
354 /*
355  * Do Logitech PS2++ / PS2T++ magic init.
356  */
357                 if (model_info->kind == PS2PP_KIND_TP3) { /* Touch Pad 3 */
358
359                         /* Unprotect RAM */
360                         param[0] = 0x11; param[1] = 0x04; param[2] = 0x68;
361                         ps2_command(ps2dev, param, 0x30d1);
362                         /* Enable features */
363                         param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b;
364                         ps2_command(ps2dev, param, 0x30d1);
365                         /* Enable PS2++ */
366                         param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3;
367                         ps2_command(ps2dev, param, 0x30d1);
368
369                         param[0] = 0;
370                         if (!ps2_command(ps2dev, param, 0x13d1) &&
371                             param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) {
372                                 use_ps2pp = true;
373                         }
374
375                 } else {
376
377                         param[0] = param[1] = param[2] = 0;
378                         ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */
379                         ps2pp_cmd(psmouse, param, 0xDB);
380
381                         if ((param[0] & 0x78) == 0x48 &&
382                             (param[1] & 0xf3) == 0xc2 &&
383                             (param[2] & 0x03) == ((param[1] >> 2) & 3)) {
384                                 ps2pp_set_smartscroll(psmouse, false);
385                                 use_ps2pp = true;
386                         }
387                 }
388
389         } else {
390                 psmouse_warn(psmouse, "Detected unknown Logitech mouse model %d\n", model);
391         }
392
393         if (set_properties) {
394                 psmouse->vendor = "Logitech";
395                 psmouse->model = model;
396
397                 if (use_ps2pp) {
398                         psmouse->protocol_handler = ps2pp_process_byte;
399                         psmouse->pktsize = 3;
400
401                         if (model_info->kind != PS2PP_KIND_TP3) {
402                                 psmouse->set_resolution = ps2pp_set_resolution;
403                                 psmouse->disconnect = ps2pp_disconnect;
404
405                                 error = device_create_file(&psmouse->ps2dev.serio->dev,
406                                                            &psmouse_attr_smartscroll.dattr);
407                                 if (error) {
408                                         psmouse_err(psmouse,
409                                                     "failed to create smartscroll sysfs attribute, error: %d\n",
410                                                     error);
411                                         return -1;
412                                 }
413                         }
414                 }
415
416                 if (buttons >= 3)
417                         __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
418
419                 if (model_info)
420                         ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);
421         }
422
423         return use_ps2pp ? 0 : -1;
424 }
425