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-rw-r--r--drivers/input/mouse/alps.c1036
1 files changed, 955 insertions, 81 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 003587c71f43..bd87380bd879 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -17,13 +17,63 @@
17 17
18#include <linux/slab.h> 18#include <linux/slab.h>
19#include <linux/input.h> 19#include <linux/input.h>
20#include <linux/input/mt.h>
20#include <linux/serio.h> 21#include <linux/serio.h>
21#include <linux/libps2.h> 22#include <linux/libps2.h>
22 23
23#include "psmouse.h" 24#include "psmouse.h"
24#include "alps.h" 25#include "alps.h"
25 26
26#define ALPS_OLDPROTO 0x01 /* old style input */ 27/*
28 * Definitions for ALPS version 3 and 4 command mode protocol
29 */
30#define ALPS_V3_X_MAX 2000
31#define ALPS_V3_Y_MAX 1400
32
33#define ALPS_BITMAP_X_BITS 15
34#define ALPS_BITMAP_Y_BITS 11
35
36#define ALPS_CMD_NIBBLE_10 0x01f2
37
38static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
39 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
40 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
41 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
42 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
43 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
44 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
45 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
46 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
47 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
48 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
49 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
50 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
51 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
52 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
53 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
54 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
55};
56
57static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
58 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
59 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
60 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
61 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
62 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
63 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
64 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
65 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
66 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
67 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
68 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
69 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
70 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
71 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
72 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
73 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
74};
75
76
27#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 77#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
28#define ALPS_PASS 0x04 /* device has a pass-through port */ 78#define ALPS_PASS 0x04 /* device has a pass-through port */
29 79
@@ -35,30 +85,33 @@
35 6-byte ALPS packet */ 85 6-byte ALPS packet */
36 86
37static const struct alps_model_info alps_model_data[] = { 87static const struct alps_model_info alps_model_data[] = {
38 { { 0x32, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */ 88 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
39 { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */ 89 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
40 { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, 90 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
41 { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, 91 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
42 { { 0x60, 0x03, 0xc8 }, 0xf8, 0xf8, 0 }, /* HP ze1115 */ 92 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
43 { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, 93 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
44 { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, 94 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
45 { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */ 95 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
46 { { 0x63, 0x02, 0x3c }, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */ 96 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
47 { { 0x63, 0x02, 0x50 }, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */ 97 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
48 { { 0x63, 0x02, 0x64 }, 0xf8, 0xf8, 0 }, 98 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
49 { { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */ 99 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
50 { { 0x73, 0x00, 0x0a }, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */ 100 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
51 { { 0x73, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, 101 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
52 { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */ 102 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
53 { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */ 103 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
54 { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, 104 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
55 { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */ 105 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
56 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 106 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
57 { { 0x62, 0x02, 0x14 }, 0xcf, 0xcf, 107 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
58 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, 108 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
59 { { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */ 109 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
60 { { 0x52, 0x01, 0x14 }, 0xff, 0xff, 110 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
61 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */ 111 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
112 { { 0x73, 0x02, 0x64 }, 0x9b, ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT },
113 { { 0x73, 0x02, 0x64 }, 0x9d, ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT },
114 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
62}; 115};
63 116
64/* 117/*
@@ -67,42 +120,7 @@ static const struct alps_model_info alps_model_data[] = {
67 * isn't valid per PS/2 spec. 120 * isn't valid per PS/2 spec.
68 */ 121 */
69 122
70/* 123/* Packet formats are described in Documentation/input/alps.txt */
71 * PS/2 packet format
72 *
73 * byte 0: 0 0 YSGN XSGN 1 M R L
74 * byte 1: X7 X6 X5 X4 X3 X2 X1 X0
75 * byte 2: Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
76 *
77 * Note that the device never signals overflow condition.
78 *
79 * ALPS absolute Mode - new format
80 *
81 * byte 0: 1 ? ? ? 1 ? ? ?
82 * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
83 * byte 2: 0 x10 x9 x8 x7 ? fin ges
84 * byte 3: 0 y9 y8 y7 1 M R L
85 * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
86 * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
87 *
88 * Dualpoint device -- interleaved packet format
89 *
90 * byte 0: 1 1 0 0 1 1 1 1
91 * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
92 * byte 2: 0 x10 x9 x8 x7 0 fin ges
93 * byte 3: 0 0 YSGN XSGN 1 1 1 1
94 * byte 4: X7 X6 X5 X4 X3 X2 X1 X0
95 * byte 5: Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
96 * byte 6: 0 y9 y8 y7 1 m r l
97 * byte 7: 0 y6 y5 y4 y3 y2 y1 y0
98 * byte 8: 0 z6 z5 z4 z3 z2 z1 z0
99 *
100 * CAPITALS = stick, miniscules = touchpad
101 *
102 * ?'s can have different meanings on different models,
103 * such as wheel rotation, extra buttons, stick buttons
104 * on a dualpoint, etc.
105 */
106 124
107static bool alps_is_valid_first_byte(const struct alps_model_info *model, 125static bool alps_is_valid_first_byte(const struct alps_model_info *model,
108 unsigned char data) 126 unsigned char data)
@@ -137,7 +155,7 @@ static void alps_report_buttons(struct psmouse *psmouse,
137 input_sync(dev2); 155 input_sync(dev2);
138} 156}
139 157
140static void alps_process_packet(struct psmouse *psmouse) 158static void alps_process_packet_v1_v2(struct psmouse *psmouse)
141{ 159{
142 struct alps_data *priv = psmouse->private; 160 struct alps_data *priv = psmouse->private;
143 const struct alps_model_info *model = priv->i; 161 const struct alps_model_info *model = priv->i;
@@ -147,7 +165,7 @@ static void alps_process_packet(struct psmouse *psmouse)
147 int x, y, z, ges, fin, left, right, middle; 165 int x, y, z, ges, fin, left, right, middle;
148 int back = 0, forward = 0; 166 int back = 0, forward = 0;
149 167
150 if (model->flags & ALPS_OLDPROTO) { 168 if (model->proto_version == ALPS_PROTO_V1) {
151 left = packet[2] & 0x10; 169 left = packet[2] & 0x10;
152 right = packet[2] & 0x08; 170 right = packet[2] & 0x08;
153 middle = 0; 171 middle = 0;
@@ -239,6 +257,403 @@ static void alps_process_packet(struct psmouse *psmouse)
239 input_sync(dev); 257 input_sync(dev);
240} 258}
241 259
260/*
261 * Process bitmap data from v3 and v4 protocols. Returns the number of
262 * fingers detected. A return value of 0 means at least one of the
263 * bitmaps was empty.
264 *
265 * The bitmaps don't have enough data to track fingers, so this function
266 * only generates points representing a bounding box of all contacts.
267 * These points are returned in x1, y1, x2, and y2 when the return value
268 * is greater than 0.
269 */
270static int alps_process_bitmap(unsigned int x_map, unsigned int y_map,
271 int *x1, int *y1, int *x2, int *y2)
272{
273 struct alps_bitmap_point {
274 int start_bit;
275 int num_bits;
276 };
277
278 int fingers_x = 0, fingers_y = 0, fingers;
279 int i, bit, prev_bit;
280 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
281 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
282 struct alps_bitmap_point *point;
283
284 if (!x_map || !y_map)
285 return 0;
286
287 *x1 = *y1 = *x2 = *y2 = 0;
288
289 prev_bit = 0;
290 point = &x_low;
291 for (i = 0; x_map != 0; i++, x_map >>= 1) {
292 bit = x_map & 1;
293 if (bit) {
294 if (!prev_bit) {
295 point->start_bit = i;
296 fingers_x++;
297 }
298 point->num_bits++;
299 } else {
300 if (prev_bit)
301 point = &x_high;
302 else
303 point->num_bits = 0;
304 }
305 prev_bit = bit;
306 }
307
308 /*
309 * y bitmap is reversed for what we need (lower positions are in
310 * higher bits), so we process from the top end.
311 */
312 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - ALPS_BITMAP_Y_BITS);
313 prev_bit = 0;
314 point = &y_low;
315 for (i = 0; y_map != 0; i++, y_map <<= 1) {
316 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
317 if (bit) {
318 if (!prev_bit) {
319 point->start_bit = i;
320 fingers_y++;
321 }
322 point->num_bits++;
323 } else {
324 if (prev_bit)
325 point = &y_high;
326 else
327 point->num_bits = 0;
328 }
329 prev_bit = bit;
330 }
331
332 /*
333 * Fingers can overlap, so we use the maximum count of fingers
334 * on either axis as the finger count.
335 */
336 fingers = max(fingers_x, fingers_y);
337
338 /*
339 * If total fingers is > 1 but either axis reports only a single
340 * contact, we have overlapping or adjacent fingers. For the
341 * purposes of creating a bounding box, divide the single contact
342 * (roughly) equally between the two points.
343 */
344 if (fingers > 1) {
345 if (fingers_x == 1) {
346 i = x_low.num_bits / 2;
347 x_low.num_bits = x_low.num_bits - i;
348 x_high.start_bit = x_low.start_bit + i;
349 x_high.num_bits = max(i, 1);
350 } else if (fingers_y == 1) {
351 i = y_low.num_bits / 2;
352 y_low.num_bits = y_low.num_bits - i;
353 y_high.start_bit = y_low.start_bit + i;
354 y_high.num_bits = max(i, 1);
355 }
356 }
357
358 *x1 = (ALPS_V3_X_MAX * (2 * x_low.start_bit + x_low.num_bits - 1)) /
359 (2 * (ALPS_BITMAP_X_BITS - 1));
360 *y1 = (ALPS_V3_Y_MAX * (2 * y_low.start_bit + y_low.num_bits - 1)) /
361 (2 * (ALPS_BITMAP_Y_BITS - 1));
362
363 if (fingers > 1) {
364 *x2 = (ALPS_V3_X_MAX * (2 * x_high.start_bit + x_high.num_bits - 1)) /
365 (2 * (ALPS_BITMAP_X_BITS - 1));
366 *y2 = (ALPS_V3_Y_MAX * (2 * y_high.start_bit + y_high.num_bits - 1)) /
367 (2 * (ALPS_BITMAP_Y_BITS - 1));
368 }
369
370 return fingers;
371}
372
373static void alps_set_slot(struct input_dev *dev, int slot, bool active,
374 int x, int y)
375{
376 input_mt_slot(dev, slot);
377 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
378 if (active) {
379 input_report_abs(dev, ABS_MT_POSITION_X, x);
380 input_report_abs(dev, ABS_MT_POSITION_Y, y);
381 }
382}
383
384static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
385 int x1, int y1, int x2, int y2)
386{
387 alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
388 alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
389}
390
391static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
392{
393 struct alps_data *priv = psmouse->private;
394 unsigned char *packet = psmouse->packet;
395 struct input_dev *dev = priv->dev2;
396 int x, y, z, left, right, middle;
397
398 /* Sanity check packet */
399 if (!(packet[0] & 0x40)) {
400 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
401 return;
402 }
403
404 /*
405 * There's a special packet that seems to indicate the end
406 * of a stream of trackstick data. Filter these out.
407 */
408 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
409 return;
410
411 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
412 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
413 z = (packet[4] & 0x7c) >> 2;
414
415 /*
416 * The x and y values tend to be quite large, and when used
417 * alone the trackstick is difficult to use. Scale them down
418 * to compensate.
419 */
420 x /= 8;
421 y /= 8;
422
423 input_report_rel(dev, REL_X, x);
424 input_report_rel(dev, REL_Y, -y);
425
426 /*
427 * Most ALPS models report the trackstick buttons in the touchpad
428 * packets, but a few report them here. No reliable way has been
429 * found to differentiate between the models upfront, so we enable
430 * the quirk in response to seeing a button press in the trackstick
431 * packet.
432 */
433 left = packet[3] & 0x01;
434 right = packet[3] & 0x02;
435 middle = packet[3] & 0x04;
436
437 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
438 (left || right || middle))
439 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
440
441 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
442 input_report_key(dev, BTN_LEFT, left);
443 input_report_key(dev, BTN_RIGHT, right);
444 input_report_key(dev, BTN_MIDDLE, middle);
445 }
446
447 input_sync(dev);
448 return;
449}
450
451static void alps_process_touchpad_packet_v3(struct psmouse *psmouse)
452{
453 struct alps_data *priv = psmouse->private;
454 unsigned char *packet = psmouse->packet;
455 struct input_dev *dev = psmouse->dev;
456 struct input_dev *dev2 = priv->dev2;
457 int x, y, z;
458 int left, right, middle;
459 int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
460 int fingers = 0, bmap_fingers;
461 unsigned int x_bitmap, y_bitmap;
462
463 /*
464 * There's no single feature of touchpad position and bitmap packets
465 * that can be used to distinguish between them. We rely on the fact
466 * that a bitmap packet should always follow a position packet with
467 * bit 6 of packet[4] set.
468 */
469 if (priv->multi_packet) {
470 /*
471 * Sometimes a position packet will indicate a multi-packet
472 * sequence, but then what follows is another position
473 * packet. Check for this, and when it happens process the
474 * position packet as usual.
475 */
476 if (packet[0] & 0x40) {
477 fingers = (packet[5] & 0x3) + 1;
478 x_bitmap = ((packet[4] & 0x7e) << 8) |
479 ((packet[1] & 0x7f) << 2) |
480 ((packet[0] & 0x30) >> 4);
481 y_bitmap = ((packet[3] & 0x70) << 4) |
482 ((packet[2] & 0x7f) << 1) |
483 (packet[4] & 0x01);
484
485 bmap_fingers = alps_process_bitmap(x_bitmap, y_bitmap,
486 &x1, &y1, &x2, &y2);
487
488 /*
489 * We shouldn't report more than one finger if
490 * we don't have two coordinates.
491 */
492 if (fingers > 1 && bmap_fingers < 2)
493 fingers = bmap_fingers;
494
495 /* Now process position packet */
496 packet = priv->multi_data;
497 } else {
498 priv->multi_packet = 0;
499 }
500 }
501
502 /*
503 * Bit 6 of byte 0 is not usually set in position packets. The only
504 * times it seems to be set is in situations where the data is
505 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
506 * this combined with the fact that this bit is useful for filtering
507 * out misidentified bitmap packets, we reject anything with this
508 * bit set.
509 */
510 if (packet[0] & 0x40)
511 return;
512
513 if (!priv->multi_packet && (packet[4] & 0x40)) {
514 priv->multi_packet = 1;
515 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
516 return;
517 }
518
519 priv->multi_packet = 0;
520
521 left = packet[3] & 0x01;
522 right = packet[3] & 0x02;
523 middle = packet[3] & 0x04;
524
525 x = ((packet[1] & 0x7f) << 4) | ((packet[4] & 0x30) >> 2) |
526 ((packet[0] & 0x30) >> 4);
527 y = ((packet[2] & 0x7f) << 4) | (packet[4] & 0x0f);
528 z = packet[5] & 0x7f;
529
530 /*
531 * Sometimes the hardware sends a single packet with z = 0
532 * in the middle of a stream. Real releases generate packets
533 * with x, y, and z all zero, so these seem to be flukes.
534 * Ignore them.
535 */
536 if (x && y && !z)
537 return;
538
539 /*
540 * If we don't have MT data or the bitmaps were empty, we have
541 * to rely on ST data.
542 */
543 if (!fingers) {
544 x1 = x;
545 y1 = y;
546 fingers = z > 0 ? 1 : 0;
547 }
548
549 if (z >= 64)
550 input_report_key(dev, BTN_TOUCH, 1);
551 else
552 input_report_key(dev, BTN_TOUCH, 0);
553
554 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
555
556 input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
557 input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
558 input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
559 input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);
560
561 input_report_key(dev, BTN_LEFT, left);
562 input_report_key(dev, BTN_RIGHT, right);
563 input_report_key(dev, BTN_MIDDLE, middle);
564
565 if (z > 0) {
566 input_report_abs(dev, ABS_X, x);
567 input_report_abs(dev, ABS_Y, y);
568 }
569 input_report_abs(dev, ABS_PRESSURE, z);
570
571 input_sync(dev);
572
573 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
574 left = packet[3] & 0x10;
575 right = packet[3] & 0x20;
576 middle = packet[3] & 0x40;
577
578 input_report_key(dev2, BTN_LEFT, left);
579 input_report_key(dev2, BTN_RIGHT, right);
580 input_report_key(dev2, BTN_MIDDLE, middle);
581 input_sync(dev2);
582 }
583}
584
585static void alps_process_packet_v3(struct psmouse *psmouse)
586{
587 unsigned char *packet = psmouse->packet;
588
589 /*
590 * v3 protocol packets come in three types, two representing
591 * touchpad data and one representing trackstick data.
592 * Trackstick packets seem to be distinguished by always
593 * having 0x3f in the last byte. This value has never been
594 * observed in the last byte of either of the other types
595 * of packets.
596 */
597 if (packet[5] == 0x3f) {
598 alps_process_trackstick_packet_v3(psmouse);
599 return;
600 }
601
602 alps_process_touchpad_packet_v3(psmouse);
603}
604
605static void alps_process_packet_v4(struct psmouse *psmouse)
606{
607 unsigned char *packet = psmouse->packet;
608 struct input_dev *dev = psmouse->dev;
609 int x, y, z;
610 int left, right;
611
612 left = packet[4] & 0x01;
613 right = packet[4] & 0x02;
614
615 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
616 ((packet[0] & 0x30) >> 4);
617 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
618 z = packet[5] & 0x7f;
619
620 if (z >= 64)
621 input_report_key(dev, BTN_TOUCH, 1);
622 else
623 input_report_key(dev, BTN_TOUCH, 0);
624
625 if (z > 0) {
626 input_report_abs(dev, ABS_X, x);
627 input_report_abs(dev, ABS_Y, y);
628 }
629 input_report_abs(dev, ABS_PRESSURE, z);
630
631 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
632 input_report_key(dev, BTN_LEFT, left);
633 input_report_key(dev, BTN_RIGHT, right);
634
635 input_sync(dev);
636}
637
638static void alps_process_packet(struct psmouse *psmouse)
639{
640 struct alps_data *priv = psmouse->private;
641 const struct alps_model_info *model = priv->i;
642
643 switch (model->proto_version) {
644 case ALPS_PROTO_V1:
645 case ALPS_PROTO_V2:
646 alps_process_packet_v1_v2(psmouse);
647 break;
648 case ALPS_PROTO_V3:
649 alps_process_packet_v3(psmouse);
650 break;
651 case ALPS_PROTO_V4:
652 alps_process_packet_v4(psmouse);
653 break;
654 }
655}
656
242static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 657static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
243 unsigned char packet[], 658 unsigned char packet[],
244 bool report_buttons) 659 bool report_buttons)
@@ -344,7 +759,7 @@ static void alps_flush_packet(unsigned long data)
344 759
345 serio_pause_rx(psmouse->ps2dev.serio); 760 serio_pause_rx(psmouse->ps2dev.serio);
346 761
347 if (psmouse->pktcnt == 6) { 762 if (psmouse->pktcnt == psmouse->pktsize) {
348 763
349 /* 764 /*
350 * We did not any more data in reasonable amount of time. 765 * We did not any more data in reasonable amount of time.
@@ -395,8 +810,8 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
395 return PSMOUSE_BAD_DATA; 810 return PSMOUSE_BAD_DATA;
396 } 811 }
397 812
398 /* Bytes 2 - 6 should have 0 in the highest bit */ 813 /* Bytes 2 - pktsize should have 0 in the highest bit */
399 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 && 814 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
400 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 815 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
401 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 816 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
402 psmouse->pktcnt - 1, 817 psmouse->pktcnt - 1,
@@ -404,7 +819,7 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
404 return PSMOUSE_BAD_DATA; 819 return PSMOUSE_BAD_DATA;
405 } 820 }
406 821
407 if (psmouse->pktcnt == 6) { 822 if (psmouse->pktcnt == psmouse->pktsize) {
408 alps_process_packet(psmouse); 823 alps_process_packet(psmouse);
409 return PSMOUSE_FULL_PACKET; 824 return PSMOUSE_FULL_PACKET;
410 } 825 }
@@ -412,11 +827,127 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
412 return PSMOUSE_GOOD_DATA; 827 return PSMOUSE_GOOD_DATA;
413} 828}
414 829
830static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
831{
832 struct ps2dev *ps2dev = &psmouse->ps2dev;
833 struct alps_data *priv = psmouse->private;
834 int command;
835 unsigned char *param;
836 unsigned char dummy[4];
837
838 BUG_ON(nibble > 0xf);
839
840 command = priv->nibble_commands[nibble].command;
841 param = (command & 0x0f00) ?
842 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
843
844 if (ps2_command(ps2dev, param, command))
845 return -1;
846
847 return 0;
848}
849
850static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
851{
852 struct ps2dev *ps2dev = &psmouse->ps2dev;
853 struct alps_data *priv = psmouse->private;
854 int i, nibble;
855
856 if (ps2_command(ps2dev, NULL, priv->addr_command))
857 return -1;
858
859 for (i = 12; i >= 0; i -= 4) {
860 nibble = (addr >> i) & 0xf;
861 if (alps_command_mode_send_nibble(psmouse, nibble))
862 return -1;
863 }
864
865 return 0;
866}
867
868static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
869{
870 struct ps2dev *ps2dev = &psmouse->ps2dev;
871 unsigned char param[4];
872
873 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
874 return -1;
875
876 /*
877 * The address being read is returned in the first two bytes
878 * of the result. Check that this address matches the expected
879 * address.
880 */
881 if (addr != ((param[0] << 8) | param[1]))
882 return -1;
883
884 return param[2];
885}
886
887static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
888{
889 if (alps_command_mode_set_addr(psmouse, addr))
890 return -1;
891 return __alps_command_mode_read_reg(psmouse, addr);
892}
893
894static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
895{
896 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
897 return -1;
898 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
899 return -1;
900 return 0;
901}
902
903static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
904 u8 value)
905{
906 if (alps_command_mode_set_addr(psmouse, addr))
907 return -1;
908 return __alps_command_mode_write_reg(psmouse, value);
909}
910
911static int alps_enter_command_mode(struct psmouse *psmouse,
912 unsigned char *resp)
913{
914 unsigned char param[4];
915 struct ps2dev *ps2dev = &psmouse->ps2dev;
916
917 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
918 ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
919 ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
920 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
921 psmouse_err(psmouse, "failed to enter command mode\n");
922 return -1;
923 }
924
925 if (param[0] != 0x88 && param[1] != 0x07) {
926 psmouse_dbg(psmouse,
927 "unknown response while entering command mode: %2.2x %2.2x %2.2x\n",
928 param[0], param[1], param[2]);
929 return -1;
930 }
931
932 if (resp)
933 *resp = param[2];
934 return 0;
935}
936
937static inline int alps_exit_command_mode(struct psmouse *psmouse)
938{
939 struct ps2dev *ps2dev = &psmouse->ps2dev;
940 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
941 return -1;
942 return 0;
943}
944
415static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version) 945static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
416{ 946{
417 struct ps2dev *ps2dev = &psmouse->ps2dev; 947 struct ps2dev *ps2dev = &psmouse->ps2dev;
418 static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 }; 948 static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
419 unsigned char param[4]; 949 unsigned char param[4];
950 const struct alps_model_info *model = NULL;
420 int i; 951 int i;
421 952
422 /* 953 /*
@@ -464,12 +995,41 @@ static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int
464 *version = (param[0] << 8) | (param[1] << 4) | i; 995 *version = (param[0] << 8) | (param[1] << 4) | i;
465 } 996 }
466 997
467 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) 998 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
468 if (!memcmp(param, alps_model_data[i].signature, 999 if (!memcmp(param, alps_model_data[i].signature,
469 sizeof(alps_model_data[i].signature))) 1000 sizeof(alps_model_data[i].signature))) {
470 return alps_model_data + i; 1001 model = alps_model_data + i;
1002 break;
1003 }
1004 }
471 1005
472 return NULL; 1006 if (model && model->proto_version > ALPS_PROTO_V2) {
1007 /*
1008 * Need to check command mode response to identify
1009 * model
1010 */
1011 model = NULL;
1012 if (alps_enter_command_mode(psmouse, param)) {
1013 psmouse_warn(psmouse,
1014 "touchpad failed to enter command mode\n");
1015 } else {
1016 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
1017 if (alps_model_data[i].proto_version > ALPS_PROTO_V2 &&
1018 alps_model_data[i].command_mode_resp == param[0]) {
1019 model = alps_model_data + i;
1020 break;
1021 }
1022 }
1023 alps_exit_command_mode(psmouse);
1024
1025 if (!model)
1026 psmouse_dbg(psmouse,
1027 "Unknown command mode response %2.2x\n",
1028 param[0]);
1029 }
1030 }
1031
1032 return model;
473} 1033}
474 1034
475/* 1035/*
@@ -477,7 +1037,7 @@ static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int
477 * subsequent commands. It looks like glidepad is behind stickpointer, 1037 * subsequent commands. It looks like glidepad is behind stickpointer,
478 * I'd thought it would be other way around... 1038 * I'd thought it would be other way around...
479 */ 1039 */
480static int alps_passthrough_mode(struct psmouse *psmouse, bool enable) 1040static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
481{ 1041{
482 struct ps2dev *ps2dev = &psmouse->ps2dev; 1042 struct ps2dev *ps2dev = &psmouse->ps2dev;
483 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 1043 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
@@ -494,7 +1054,7 @@ static int alps_passthrough_mode(struct psmouse *psmouse, bool enable)
494 return 0; 1054 return 0;
495} 1055}
496 1056
497static int alps_absolute_mode(struct psmouse *psmouse) 1057static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
498{ 1058{
499 struct ps2dev *ps2dev = &psmouse->ps2dev; 1059 struct ps2dev *ps2dev = &psmouse->ps2dev;
500 1060
@@ -565,17 +1125,17 @@ static int alps_tap_mode(struct psmouse *psmouse, int enable)
565static int alps_poll(struct psmouse *psmouse) 1125static int alps_poll(struct psmouse *psmouse)
566{ 1126{
567 struct alps_data *priv = psmouse->private; 1127 struct alps_data *priv = psmouse->private;
568 unsigned char buf[6]; 1128 unsigned char buf[sizeof(psmouse->packet)];
569 bool poll_failed; 1129 bool poll_failed;
570 1130
571 if (priv->i->flags & ALPS_PASS) 1131 if (priv->i->flags & ALPS_PASS)
572 alps_passthrough_mode(psmouse, true); 1132 alps_passthrough_mode_v2(psmouse, true);
573 1133
574 poll_failed = ps2_command(&psmouse->ps2dev, buf, 1134 poll_failed = ps2_command(&psmouse->ps2dev, buf,
575 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1135 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
576 1136
577 if (priv->i->flags & ALPS_PASS) 1137 if (priv->i->flags & ALPS_PASS)
578 alps_passthrough_mode(psmouse, false); 1138 alps_passthrough_mode_v2(psmouse, false);
579 1139
580 if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0) 1140 if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0)
581 return -1; 1141 return -1;
@@ -592,13 +1152,13 @@ static int alps_poll(struct psmouse *psmouse)
592 return 0; 1152 return 0;
593} 1153}
594 1154
595static int alps_hw_init(struct psmouse *psmouse) 1155static int alps_hw_init_v1_v2(struct psmouse *psmouse)
596{ 1156{
597 struct alps_data *priv = psmouse->private; 1157 struct alps_data *priv = psmouse->private;
598 const struct alps_model_info *model = priv->i; 1158 const struct alps_model_info *model = priv->i;
599 1159
600 if ((model->flags & ALPS_PASS) && 1160 if ((model->flags & ALPS_PASS) &&
601 alps_passthrough_mode(psmouse, true)) { 1161 alps_passthrough_mode_v2(psmouse, true)) {
602 return -1; 1162 return -1;
603 } 1163 }
604 1164
@@ -607,13 +1167,13 @@ static int alps_hw_init(struct psmouse *psmouse)
607 return -1; 1167 return -1;
608 } 1168 }
609 1169
610 if (alps_absolute_mode(psmouse)) { 1170 if (alps_absolute_mode_v1_v2(psmouse)) {
611 psmouse_err(psmouse, "Failed to enable absolute mode\n"); 1171 psmouse_err(psmouse, "Failed to enable absolute mode\n");
612 return -1; 1172 return -1;
613 } 1173 }
614 1174
615 if ((model->flags & ALPS_PASS) && 1175 if ((model->flags & ALPS_PASS) &&
616 alps_passthrough_mode(psmouse, false)) { 1176 alps_passthrough_mode_v2(psmouse, false)) {
617 return -1; 1177 return -1;
618 } 1178 }
619 1179
@@ -626,6 +1186,297 @@ static int alps_hw_init(struct psmouse *psmouse)
626 return 0; 1186 return 0;
627} 1187}
628 1188
1189/*
1190 * Enable or disable passthrough mode to the trackstick. Must be in
1191 * command mode when calling this function.
1192 */
1193static int alps_passthrough_mode_v3(struct psmouse *psmouse, bool enable)
1194{
1195 int reg_val;
1196
1197 reg_val = alps_command_mode_read_reg(psmouse, 0x0008);
1198 if (reg_val == -1)
1199 return -1;
1200
1201 if (enable)
1202 reg_val |= 0x01;
1203 else
1204 reg_val &= ~0x01;
1205
1206 if (__alps_command_mode_write_reg(psmouse, reg_val))
1207 return -1;
1208
1209 return 0;
1210}
1211
1212/* Must be in command mode when calling this function */
1213static int alps_absolute_mode_v3(struct psmouse *psmouse)
1214{
1215 int reg_val;
1216
1217 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1218 if (reg_val == -1)
1219 return -1;
1220
1221 reg_val |= 0x06;
1222 if (__alps_command_mode_write_reg(psmouse, reg_val))
1223 return -1;
1224
1225 return 0;
1226}
1227
1228static int alps_hw_init_v3(struct psmouse *psmouse)
1229{
1230 struct alps_data *priv = psmouse->private;
1231 struct ps2dev *ps2dev = &psmouse->ps2dev;
1232 int reg_val;
1233 unsigned char param[4];
1234
1235 priv->nibble_commands = alps_v3_nibble_commands;
1236 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1237
1238 if (alps_enter_command_mode(psmouse, NULL))
1239 goto error;
1240
1241 /* Check for trackstick */
1242 reg_val = alps_command_mode_read_reg(psmouse, 0x0008);
1243 if (reg_val == -1)
1244 goto error;
1245 if (reg_val & 0x80) {
1246 if (alps_passthrough_mode_v3(psmouse, true))
1247 goto error;
1248 if (alps_exit_command_mode(psmouse))
1249 goto error;
1250
1251 /*
1252 * E7 report for the trackstick
1253 *
1254 * There have been reports of failures to seem to trace back
1255 * to the above trackstick check failing. When these occur
1256 * this E7 report fails, so when that happens we continue
1257 * with the assumption that there isn't a trackstick after
1258 * all.
1259 */
1260 param[0] = 0x64;
1261 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1262 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1263 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1264 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
1265 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1266 } else {
1267 psmouse_dbg(psmouse,
1268 "trackstick E7 report: %2.2x %2.2x %2.2x\n",
1269 param[0], param[1], param[2]);
1270
1271 /*
1272 * Not sure what this does, but it is absolutely
1273 * essential. Without it, the touchpad does not
1274 * work at all and the trackstick just emits normal
1275 * PS/2 packets.
1276 */
1277 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1278 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1279 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1280 alps_command_mode_send_nibble(psmouse, 0x9) ||
1281 alps_command_mode_send_nibble(psmouse, 0x4)) {
1282 psmouse_err(psmouse,
1283 "Error sending magic E6 sequence\n");
1284 goto error_passthrough;
1285 }
1286 }
1287
1288 if (alps_enter_command_mode(psmouse, NULL))
1289 goto error_passthrough;
1290 if (alps_passthrough_mode_v3(psmouse, false))
1291 goto error;
1292 }
1293
1294 if (alps_absolute_mode_v3(psmouse)) {
1295 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1296 goto error;
1297 }
1298
1299 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1300 if (reg_val == -1)
1301 goto error;
1302 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1303 goto error;
1304
1305 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1306 if (reg_val == -1)
1307 goto error;
1308 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1309 goto error;
1310
1311 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1312 goto error;
1313 if (__alps_command_mode_write_reg(psmouse, 0x04))
1314 goto error;
1315
1316 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1317 goto error;
1318 if (__alps_command_mode_write_reg(psmouse, 0x03))
1319 goto error;
1320
1321 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1322 goto error;
1323 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1324 goto error;
1325
1326 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1327 goto error;
1328 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1329 goto error;
1330
1331 /*
1332 * This ensures the trackstick packets are in the format
1333 * supported by this driver. If bit 1 isn't set the packet
1334 * format is different.
1335 */
1336 if (alps_command_mode_write_reg(psmouse, 0x0008, 0x82))
1337 goto error;
1338
1339 alps_exit_command_mode(psmouse);
1340
1341 /* Set rate and enable data reporting */
1342 param[0] = 0x64;
1343 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1344 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1345 psmouse_err(psmouse, "Failed to enable data reporting\n");
1346 return -1;
1347 }
1348
1349 return 0;
1350
1351error_passthrough:
1352 /* Something failed while in passthrough mode, so try to get out */
1353 if (!alps_enter_command_mode(psmouse, NULL))
1354 alps_passthrough_mode_v3(psmouse, false);
1355error:
1356 /*
1357 * Leaving the touchpad in command mode will essentially render
1358 * it unusable until the machine reboots, so exit it here just
1359 * to be safe
1360 */
1361 alps_exit_command_mode(psmouse);
1362 return -1;
1363}
1364
1365/* Must be in command mode when calling this function */
1366static int alps_absolute_mode_v4(struct psmouse *psmouse)
1367{
1368 int reg_val;
1369
1370 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1371 if (reg_val == -1)
1372 return -1;
1373
1374 reg_val |= 0x02;
1375 if (__alps_command_mode_write_reg(psmouse, reg_val))
1376 return -1;
1377
1378 return 0;
1379}
1380
1381static int alps_hw_init_v4(struct psmouse *psmouse)
1382{
1383 struct alps_data *priv = psmouse->private;
1384 struct ps2dev *ps2dev = &psmouse->ps2dev;
1385 unsigned char param[4];
1386
1387 priv->nibble_commands = alps_v4_nibble_commands;
1388 priv->addr_command = PSMOUSE_CMD_DISABLE;
1389
1390 if (alps_enter_command_mode(psmouse, NULL))
1391 goto error;
1392
1393 if (alps_absolute_mode_v4(psmouse)) {
1394 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1395 goto error;
1396 }
1397
1398 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1399 goto error;
1400
1401 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1402 goto error;
1403
1404 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1405 goto error;
1406
1407 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1408 goto error;
1409
1410 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1411 goto error;
1412
1413 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1414 goto error;
1415
1416 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1417 goto error;
1418
1419 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1420 goto error;
1421
1422 alps_exit_command_mode(psmouse);
1423
1424 /*
1425 * This sequence changes the output from a 9-byte to an
1426 * 8-byte format. All the same data seems to be present,
1427 * just in a more compact format.
1428 */
1429 param[0] = 0xc8;
1430 param[1] = 0x64;
1431 param[2] = 0x50;
1432 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1433 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
1434 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
1435 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1436 return -1;
1437
1438 /* Set rate and enable data reporting */
1439 param[0] = 0x64;
1440 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1441 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1442 psmouse_err(psmouse, "Failed to enable data reporting\n");
1443 return -1;
1444 }
1445
1446 return 0;
1447
1448error:
1449 /*
1450 * Leaving the touchpad in command mode will essentially render
1451 * it unusable until the machine reboots, so exit it here just
1452 * to be safe
1453 */
1454 alps_exit_command_mode(psmouse);
1455 return -1;
1456}
1457
1458static int alps_hw_init(struct psmouse *psmouse)
1459{
1460 struct alps_data *priv = psmouse->private;
1461 const struct alps_model_info *model = priv->i;
1462 int ret = -1;
1463
1464 switch (model->proto_version) {
1465 case ALPS_PROTO_V1:
1466 case ALPS_PROTO_V2:
1467 ret = alps_hw_init_v1_v2(psmouse);
1468 break;
1469 case ALPS_PROTO_V3:
1470 ret = alps_hw_init_v3(psmouse);
1471 break;
1472 case ALPS_PROTO_V4:
1473 ret = alps_hw_init_v4(psmouse);
1474 break;
1475 }
1476
1477 return ret;
1478}
1479
629static int alps_reconnect(struct psmouse *psmouse) 1480static int alps_reconnect(struct psmouse *psmouse)
630{ 1481{
631 const struct alps_model_info *model; 1482 const struct alps_model_info *model;
@@ -666,6 +1517,8 @@ int alps_init(struct psmouse *psmouse)
666 1517
667 psmouse->private = priv; 1518 psmouse->private = priv;
668 1519
1520 psmouse_reset(psmouse);
1521
669 model = alps_get_model(psmouse, &version); 1522 model = alps_get_model(psmouse, &version);
670 if (!model) 1523 if (!model)
671 goto init_fail; 1524 goto init_fail;
@@ -693,8 +1546,29 @@ int alps_init(struct psmouse *psmouse)
693 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 1546 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
694 1547
695 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 1548 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
696 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0); 1549
697 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0); 1550 switch (model->proto_version) {
1551 case ALPS_PROTO_V1:
1552 case ALPS_PROTO_V2:
1553 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
1554 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
1555 break;
1556 case ALPS_PROTO_V3:
1557 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
1558 input_mt_init_slots(dev1, 2);
1559 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0);
1560 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0);
1561
1562 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
1563 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
1564 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
1565 /* fall through */
1566 case ALPS_PROTO_V4:
1567 input_set_abs_params(dev1, ABS_X, 0, ALPS_V3_X_MAX, 0, 0);
1568 input_set_abs_params(dev1, ABS_Y, 0, ALPS_V3_Y_MAX, 0, 0);
1569 break;
1570 }
1571
698 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 1572 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
699 1573
700 if (model->flags & ALPS_WHEEL) { 1574 if (model->flags & ALPS_WHEEL) {
@@ -737,7 +1611,7 @@ int alps_init(struct psmouse *psmouse)
737 psmouse->poll = alps_poll; 1611 psmouse->poll = alps_poll;
738 psmouse->disconnect = alps_disconnect; 1612 psmouse->disconnect = alps_disconnect;
739 psmouse->reconnect = alps_reconnect; 1613 psmouse->reconnect = alps_reconnect;
740 psmouse->pktsize = 6; 1614 psmouse->pktsize = model->proto_version == ALPS_PROTO_V4 ? 8 : 6;
741 1615
742 /* We are having trouble resyncing ALPS touchpads so disable it for now */ 1616 /* We are having trouble resyncing ALPS touchpads so disable it for now */
743 psmouse->resync_time = 0; 1617 psmouse->resync_time = 0;
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-06 01:21:59 -0500