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alps.c
1846 lines (1529 loc) · 49.6 KB
/
alps.c
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/*
* ALPS touchpad PS/2 mouse driver
*
* Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
* Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
* Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
* Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
* Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
*
* ALPS detection, tap switching and status querying info is taken from
* tpconfig utility (by C. Scott Ananian and Bruce Kall).
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include "psmouse.h"
#include "alps.h"
/*
* Definitions for ALPS version 3 and 4 command mode protocol
*/
#define ALPS_CMD_NIBBLE_10 0x01f2
#define ALPS_REG_BASE_RUSHMORE 0xc2c0
#define ALPS_REG_BASE_PINNACLE 0x0000
static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
{ PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
{ PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
{ PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
{ PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
{ PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
{ PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
{ PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
{ PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
{ PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
{ PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
{ ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
{ PSMOUSE_CMD_SETRES, 0x00 }, /* b */
{ PSMOUSE_CMD_SETRES, 0x01 }, /* c */
{ PSMOUSE_CMD_SETRES, 0x02 }, /* d */
{ PSMOUSE_CMD_SETRES, 0x03 }, /* e */
{ PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
};
static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
{ PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
{ PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
{ PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
{ PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
{ PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
{ PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
{ PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
{ PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
{ PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
{ PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
{ ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
{ PSMOUSE_CMD_SETRES, 0x00 }, /* b */
{ PSMOUSE_CMD_SETRES, 0x01 }, /* c */
{ PSMOUSE_CMD_SETRES, 0x02 }, /* d */
{ PSMOUSE_CMD_SETRES, 0x03 }, /* e */
{ PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
};
#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
#define ALPS_PASS 0x04 /* device has a pass-through port */
#define ALPS_WHEEL 0x08 /* hardware wheel present */
#define ALPS_FW_BK_1 0x10 /* front & back buttons present */
#define ALPS_FW_BK_2 0x20 /* front & back buttons present */
#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
6-byte ALPS packet */
static const struct alps_model_info alps_model_data[] = {
{ { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
{ { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
{ { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
{ { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
{ { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
{ { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
{ { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
{ { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
{ { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
{ { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
{ { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
{ { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
{ { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
{ { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
{ { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
{ { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
{ { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
{ { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
/* Dell Latitude E5500, E6400, E6500, Precision M4400 */
{ { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
{ { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
{ { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
{ { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
};
static void alps_set_abs_params_st(struct alps_data *priv,
struct input_dev *dev1);
static void alps_set_abs_params_mt(struct alps_data *priv,
struct input_dev *dev1);
/*
* XXX - this entry is suspicious. First byte has zero lower nibble,
* which is what a normal mouse would report. Also, the value 0x0e
* isn't valid per PS/2 spec.
*/
/* Packet formats are described in Documentation/input/alps.txt */
static bool alps_is_valid_first_byte(struct alps_data *priv,
unsigned char data)
{
return (data & priv->mask0) == priv->byte0;
}
static void alps_report_buttons(struct psmouse *psmouse,
struct input_dev *dev1, struct input_dev *dev2,
int left, int right, int middle)
{
struct input_dev *dev;
/*
* If shared button has already been reported on the
* other device (dev2) then this event should be also
* sent through that device.
*/
dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
input_report_key(dev, BTN_LEFT, left);
dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
input_report_key(dev, BTN_RIGHT, right);
dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
input_report_key(dev, BTN_MIDDLE, middle);
/*
* Sync the _other_ device now, we'll do the first
* device later once we report the rest of the events.
*/
input_sync(dev2);
}
static void alps_process_packet_v1_v2(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
unsigned char *packet = psmouse->packet;
struct input_dev *dev = psmouse->dev;
struct input_dev *dev2 = priv->dev2;
int x, y, z, ges, fin, left, right, middle;
int back = 0, forward = 0;
if (priv->proto_version == ALPS_PROTO_V1) {
left = packet[2] & 0x10;
right = packet[2] & 0x08;
middle = 0;
x = packet[1] | ((packet[0] & 0x07) << 7);
y = packet[4] | ((packet[3] & 0x07) << 7);
z = packet[5];
} else {
left = packet[3] & 1;
right = packet[3] & 2;
middle = packet[3] & 4;
x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
z = packet[5];
}
if (priv->flags & ALPS_FW_BK_1) {
back = packet[0] & 0x10;
forward = packet[2] & 4;
}
if (priv->flags & ALPS_FW_BK_2) {
back = packet[3] & 4;
forward = packet[2] & 4;
if ((middle = forward && back))
forward = back = 0;
}
ges = packet[2] & 1;
fin = packet[2] & 2;
if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
alps_report_buttons(psmouse, dev2, dev, left, right, middle);
input_sync(dev2);
return;
}
alps_report_buttons(psmouse, dev, dev2, left, right, middle);
/* Convert hardware tap to a reasonable Z value */
if (ges && !fin)
z = 40;
/*
* A "tap and drag" operation is reported by the hardware as a transition
* from (!fin && ges) to (fin && ges). This should be translated to the
* sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
*/
if (ges && fin && !priv->prev_fin) {
input_report_abs(dev, ABS_X, x);
input_report_abs(dev, ABS_Y, y);
input_report_abs(dev, ABS_PRESSURE, 0);
input_report_key(dev, BTN_TOOL_FINGER, 0);
input_sync(dev);
}
priv->prev_fin = fin;
if (z > 30)
input_report_key(dev, BTN_TOUCH, 1);
if (z < 25)
input_report_key(dev, BTN_TOUCH, 0);
if (z > 0) {
input_report_abs(dev, ABS_X, x);
input_report_abs(dev, ABS_Y, y);
}
input_report_abs(dev, ABS_PRESSURE, z);
input_report_key(dev, BTN_TOOL_FINGER, z > 0);
if (priv->flags & ALPS_WHEEL)
input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
input_report_key(dev, BTN_FORWARD, forward);
input_report_key(dev, BTN_BACK, back);
}
if (priv->flags & ALPS_FOUR_BUTTONS) {
input_report_key(dev, BTN_0, packet[2] & 4);
input_report_key(dev, BTN_1, packet[0] & 0x10);
input_report_key(dev, BTN_2, packet[3] & 4);
input_report_key(dev, BTN_3, packet[0] & 0x20);
}
input_sync(dev);
}
/*
* Process bitmap data from v3 and v4 protocols. Returns the number of
* fingers detected. A return value of 0 means at least one of the
* bitmaps was empty.
*
* The bitmaps don't have enough data to track fingers, so this function
* only generates points representing a bounding box of all contacts.
* These points are returned in x1, y1, x2, and y2 when the return value
* is greater than 0.
*/
static int alps_process_bitmap(struct alps_data *priv,
unsigned int x_map, unsigned int y_map,
int *x1, int *y1, int *x2, int *y2)
{
struct alps_bitmap_point {
int start_bit;
int num_bits;
};
int fingers_x = 0, fingers_y = 0, fingers;
int i, bit, prev_bit;
struct alps_bitmap_point x_low = {0,}, x_high = {0,};
struct alps_bitmap_point y_low = {0,}, y_high = {0,};
struct alps_bitmap_point *point;
if (!x_map || !y_map)
return 0;
*x1 = *y1 = *x2 = *y2 = 0;
prev_bit = 0;
point = &x_low;
for (i = 0; x_map != 0; i++, x_map >>= 1) {
bit = x_map & 1;
if (bit) {
if (!prev_bit) {
point->start_bit = i;
fingers_x++;
}
point->num_bits++;
} else {
if (prev_bit)
point = &x_high;
else
point->num_bits = 0;
}
prev_bit = bit;
}
/*
* y bitmap is reversed for what we need (lower positions are in
* higher bits), so we process from the top end.
*/
y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);
prev_bit = 0;
point = &y_low;
for (i = 0; y_map != 0; i++, y_map <<= 1) {
bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
if (bit) {
if (!prev_bit) {
point->start_bit = i;
fingers_y++;
}
point->num_bits++;
} else {
if (prev_bit)
point = &y_high;
else
point->num_bits = 0;
}
prev_bit = bit;
}
/*
* Fingers can overlap, so we use the maximum count of fingers
* on either axis as the finger count.
*/
fingers = max(fingers_x, fingers_y);
/*
* If total fingers is > 1 but either axis reports only a single
* contact, we have overlapping or adjacent fingers. For the
* purposes of creating a bounding box, divide the single contact
* (roughly) equally between the two points.
*/
if (fingers > 1) {
if (fingers_x == 1) {
i = x_low.num_bits / 2;
x_low.num_bits = x_low.num_bits - i;
x_high.start_bit = x_low.start_bit + i;
x_high.num_bits = max(i, 1);
} else if (fingers_y == 1) {
i = y_low.num_bits / 2;
y_low.num_bits = y_low.num_bits - i;
y_high.start_bit = y_low.start_bit + i;
y_high.num_bits = max(i, 1);
}
}
*x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
(2 * (priv->x_bits - 1));
*y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
(2 * (priv->y_bits - 1));
if (fingers > 1) {
*x2 = (priv->x_max *
(2 * x_high.start_bit + x_high.num_bits - 1)) /
(2 * (priv->x_bits - 1));
*y2 = (priv->y_max *
(2 * y_high.start_bit + y_high.num_bits - 1)) /
(2 * (priv->y_bits - 1));
}
return fingers;
}
static void alps_set_slot(struct input_dev *dev, int slot, bool active,
int x, int y)
{
input_mt_slot(dev, slot);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
if (active) {
input_report_abs(dev, ABS_MT_POSITION_X, x);
input_report_abs(dev, ABS_MT_POSITION_Y, y);
}
}
static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
int x1, int y1, int x2, int y2)
{
alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
}
static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
unsigned char *packet = psmouse->packet;
struct input_dev *dev = priv->dev2;
int x, y, z, left, right, middle;
/* Sanity check packet */
if (!(packet[0] & 0x40)) {
psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
return;
}
/*
* There's a special packet that seems to indicate the end
* of a stream of trackstick data. Filter these out.
*/
if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
return;
x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
z = (packet[4] & 0x7c) >> 2;
/*
* The x and y values tend to be quite large, and when used
* alone the trackstick is difficult to use. Scale them down
* to compensate.
*/
x /= 8;
y /= 8;
input_report_rel(dev, REL_X, x);
input_report_rel(dev, REL_Y, -y);
/*
* Most ALPS models report the trackstick buttons in the touchpad
* packets, but a few report them here. No reliable way has been
* found to differentiate between the models upfront, so we enable
* the quirk in response to seeing a button press in the trackstick
* packet.
*/
left = packet[3] & 0x01;
right = packet[3] & 0x02;
middle = packet[3] & 0x04;
if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
(left || right || middle))
priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
input_report_key(dev, BTN_LEFT, left);
input_report_key(dev, BTN_RIGHT, right);
input_report_key(dev, BTN_MIDDLE, middle);
}
input_sync(dev);
return;
}
static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
{
f->left = !!(p[3] & 0x01);
f->right = !!(p[3] & 0x02);
f->middle = !!(p[3] & 0x04);
f->ts_left = !!(p[3] & 0x10);
f->ts_right = !!(p[3] & 0x20);
f->ts_middle = !!(p[3] & 0x40);
}
static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p)
{
f->first_mp = !!(p[4] & 0x40);
f->is_mp = !!(p[0] & 0x40);
f->fingers = (p[5] & 0x3) + 1;
f->x_map = ((p[4] & 0x7e) << 8) |
((p[1] & 0x7f) << 2) |
((p[0] & 0x30) >> 4);
f->y_map = ((p[3] & 0x70) << 4) |
((p[2] & 0x7f) << 1) |
(p[4] & 0x01);
f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
((p[0] & 0x30) >> 4);
f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
f->z = p[5] & 0x7f;
alps_decode_buttons_v3(f, p);
}
static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p)
{
alps_decode_pinnacle(f, p);
f->x_map |= (p[5] & 0x10) << 11;
f->y_map |= (p[5] & 0x20) << 6;
}
static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p)
{
f->first_mp = !!(p[0] & 0x02);
f->is_mp = !!(p[0] & 0x20);
f->fingers = ((p[0] & 0x6) >> 1 |
(p[0] & 0x10) >> 2);
f->x_map = ((p[2] & 0x60) >> 5) |
((p[4] & 0x7f) << 2) |
((p[5] & 0x7f) << 9) |
((p[3] & 0x07) << 16) |
((p[3] & 0x70) << 15) |
((p[0] & 0x01) << 22);
f->y_map = (p[1] & 0x7f) |
((p[2] & 0x1f) << 7);
f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
f->z = (p[0] & 4) ? 0 : p[5] & 0x7f;
alps_decode_buttons_v3(f, p);
}
static void alps_process_touchpad_packet_v3(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
unsigned char *packet = psmouse->packet;
struct input_dev *dev = psmouse->dev;
struct input_dev *dev2 = priv->dev2;
int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
int fingers = 0, bmap_fingers;
struct alps_fields f;
priv->decode_fields(&f, packet);
/*
* There's no single feature of touchpad position and bitmap packets
* that can be used to distinguish between them. We rely on the fact
* that a bitmap packet should always follow a position packet with
* bit 6 of packet[4] set.
*/
if (priv->multi_packet) {
/*
* Sometimes a position packet will indicate a multi-packet
* sequence, but then what follows is another position
* packet. Check for this, and when it happens process the
* position packet as usual.
*/
if (f.is_mp) {
fingers = f.fingers;
bmap_fingers = alps_process_bitmap(priv,
f.x_map, f.y_map,
&x1, &y1, &x2, &y2);
/*
* We shouldn't report more than one finger if
* we don't have two coordinates.
*/
if (fingers > 1 && bmap_fingers < 2)
fingers = bmap_fingers;
/* Now process position packet */
priv->decode_fields(&f, priv->multi_data);
} else {
priv->multi_packet = 0;
}
}
/*
* Bit 6 of byte 0 is not usually set in position packets. The only
* times it seems to be set is in situations where the data is
* suspect anyway, e.g. a palm resting flat on the touchpad. Given
* this combined with the fact that this bit is useful for filtering
* out misidentified bitmap packets, we reject anything with this
* bit set.
*/
if (f.is_mp)
return;
if (!priv->multi_packet && f.first_mp) {
priv->multi_packet = 1;
memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
return;
}
priv->multi_packet = 0;
/*
* Sometimes the hardware sends a single packet with z = 0
* in the middle of a stream. Real releases generate packets
* with x, y, and z all zero, so these seem to be flukes.
* Ignore them.
*/
if (f.x && f.y && !f.z)
return;
/*
* If we don't have MT data or the bitmaps were empty, we have
* to rely on ST data.
*/
if (!fingers) {
x1 = f.x;
y1 = f.y;
fingers = f.z > 0 ? 1 : 0;
}
if (f.z >= 64)
input_report_key(dev, BTN_TOUCH, 1);
else
input_report_key(dev, BTN_TOUCH, 0);
alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
input_mt_report_finger_count(dev, fingers);
input_report_key(dev, BTN_LEFT, f.left);
input_report_key(dev, BTN_RIGHT, f.right);
input_report_key(dev, BTN_MIDDLE, f.middle);
if (f.z > 0) {
input_report_abs(dev, ABS_X, f.x);
input_report_abs(dev, ABS_Y, f.y);
}
input_report_abs(dev, ABS_PRESSURE, f.z);
input_sync(dev);
if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
input_report_key(dev2, BTN_LEFT, f.ts_left);
input_report_key(dev2, BTN_RIGHT, f.ts_right);
input_report_key(dev2, BTN_MIDDLE, f.ts_middle);
input_sync(dev2);
}
}
static void alps_process_packet_v3(struct psmouse *psmouse)
{
unsigned char *packet = psmouse->packet;
/*
* v3 protocol packets come in three types, two representing
* touchpad data and one representing trackstick data.
* Trackstick packets seem to be distinguished by always
* having 0x3f in the last byte. This value has never been
* observed in the last byte of either of the other types
* of packets.
*/
if (packet[5] == 0x3f) {
alps_process_trackstick_packet_v3(psmouse);
return;
}
alps_process_touchpad_packet_v3(psmouse);
}
static void alps_process_packet_v4(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
unsigned char *packet = psmouse->packet;
struct input_dev *dev = psmouse->dev;
int offset;
int x, y, z;
int left, right;
int x1, y1, x2, y2;
int fingers = 0;
unsigned int x_bitmap, y_bitmap;
/*
* v4 has a 6-byte encoding for bitmap data, but this data is
* broken up between 3 normal packets. Use priv->multi_packet to
* track our position in the bitmap packet.
*/
if (packet[6] & 0x40) {
/* sync, reset position */
priv->multi_packet = 0;
}
if (WARN_ON_ONCE(priv->multi_packet > 2))
return;
offset = 2 * priv->multi_packet;
priv->multi_data[offset] = packet[6];
priv->multi_data[offset + 1] = packet[7];
if (++priv->multi_packet > 2) {
priv->multi_packet = 0;
x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) |
((priv->multi_data[3] & 0x60) << 3) |
((priv->multi_data[0] & 0x3f) << 2) |
((priv->multi_data[1] & 0x60) >> 5);
y_bitmap = ((priv->multi_data[5] & 0x01) << 10) |
((priv->multi_data[3] & 0x1f) << 5) |
(priv->multi_data[1] & 0x1f);
fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,
&x1, &y1, &x2, &y2);
/* Store MT data.*/
priv->fingers = fingers;
priv->x1 = x1;
priv->x2 = x2;
priv->y1 = y1;
priv->y2 = y2;
}
left = packet[4] & 0x01;
right = packet[4] & 0x02;
x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
((packet[0] & 0x30) >> 4);
y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
z = packet[5] & 0x7f;
/*
* If there were no contacts in the bitmap, use ST
* points in MT reports.
* If there were two contacts or more, report MT data.
*/
if (priv->fingers < 2) {
x1 = x;
y1 = y;
fingers = z > 0 ? 1 : 0;
} else {
fingers = priv->fingers;
x1 = priv->x1;
x2 = priv->x2;
y1 = priv->y1;
y2 = priv->y2;
}
if (z >= 64)
input_report_key(dev, BTN_TOUCH, 1);
else
input_report_key(dev, BTN_TOUCH, 0);
alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
input_mt_report_finger_count(dev, fingers);
input_report_key(dev, BTN_LEFT, left);
input_report_key(dev, BTN_RIGHT, right);
if (z > 0) {
input_report_abs(dev, ABS_X, x);
input_report_abs(dev, ABS_Y, y);
}
input_report_abs(dev, ABS_PRESSURE, z);
input_sync(dev);
}
static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
unsigned char packet[],
bool report_buttons)
{
struct alps_data *priv = psmouse->private;
struct input_dev *dev2 = priv->dev2;
if (report_buttons)
alps_report_buttons(psmouse, dev2, psmouse->dev,
packet[0] & 1, packet[0] & 2, packet[0] & 4);
input_report_rel(dev2, REL_X,
packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
input_report_rel(dev2, REL_Y,
packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
input_sync(dev2);
}
static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
if (psmouse->pktcnt < 6)
return PSMOUSE_GOOD_DATA;
if (psmouse->pktcnt == 6) {
/*
* Start a timer to flush the packet if it ends up last
* 6-byte packet in the stream. Timer needs to fire
* psmouse core times out itself. 20 ms should be enough
* to decide if we are getting more data or not.
*/
mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
return PSMOUSE_GOOD_DATA;
}
del_timer(&priv->timer);
if (psmouse->packet[6] & 0x80) {
/*
* Highest bit is set - that means we either had
* complete ALPS packet and this is start of the
* next packet or we got garbage.
*/
if (((psmouse->packet[3] |
psmouse->packet[4] |
psmouse->packet[5]) & 0x80) ||
(!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
psmouse_dbg(psmouse,
"refusing packet %4ph (suspected interleaved ps/2)\n",
psmouse->packet + 3);
return PSMOUSE_BAD_DATA;
}
priv->process_packet(psmouse);
/* Continue with the next packet */
psmouse->packet[0] = psmouse->packet[6];
psmouse->pktcnt = 1;
} else {
/*
* High bit is 0 - that means that we indeed got a PS/2
* packet in the middle of ALPS packet.
*
* There is also possibility that we got 6-byte ALPS
* packet followed by 3-byte packet from trackpoint. We
* can not distinguish between these 2 scenarios but
* because the latter is unlikely to happen in course of
* normal operation (user would need to press all
* buttons on the pad and start moving trackpoint
* without touching the pad surface) we assume former.
* Even if we are wrong the wost thing that would happen
* the cursor would jump but we should not get protocol
* de-synchronization.
*/
alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
false);
/*
* Continue with the standard ALPS protocol handling,
* but make sure we won't process it as an interleaved
* packet again, which may happen if all buttons are
* pressed. To avoid this let's reset the 4th bit which
* is normally 1.
*/
psmouse->packet[3] = psmouse->packet[6] & 0xf7;
psmouse->pktcnt = 4;
}
return PSMOUSE_GOOD_DATA;
}
static void alps_flush_packet(unsigned long data)
{
struct psmouse *psmouse = (struct psmouse *)data;
struct alps_data *priv = psmouse->private;
serio_pause_rx(psmouse->ps2dev.serio);
if (psmouse->pktcnt == psmouse->pktsize) {
/*
* We did not any more data in reasonable amount of time.
* Validate the last 3 bytes and process as a standard
* ALPS packet.
*/
if ((psmouse->packet[3] |
psmouse->packet[4] |
psmouse->packet[5]) & 0x80) {
psmouse_dbg(psmouse,
"refusing packet %3ph (suspected interleaved ps/2)\n",
psmouse->packet + 3);
} else {
priv->process_packet(psmouse);
}
psmouse->pktcnt = 0;
}
serio_continue_rx(psmouse->ps2dev.serio);
}
static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
if (psmouse->pktcnt == 3) {
alps_report_bare_ps2_packet(psmouse, psmouse->packet,
true);
return PSMOUSE_FULL_PACKET;
}
return PSMOUSE_GOOD_DATA;
}
/* Check for PS/2 packet stuffed in the middle of ALPS packet. */
if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
return alps_handle_interleaved_ps2(psmouse);
}
if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
psmouse_dbg(psmouse,
"refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
psmouse->packet[0], priv->mask0, priv->byte0);
return PSMOUSE_BAD_DATA;
}
/* Bytes 2 - pktsize should have 0 in the highest bit */
if (priv->proto_version != ALPS_PROTO_V5 &&
psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
(psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
psmouse->pktcnt - 1,
psmouse->packet[psmouse->pktcnt - 1]);
return PSMOUSE_BAD_DATA;
}
if (psmouse->pktcnt == psmouse->pktsize) {
priv->process_packet(psmouse);
return PSMOUSE_FULL_PACKET;
}
return PSMOUSE_GOOD_DATA;
}
static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
struct alps_data *priv = psmouse->private;
int command;
unsigned char *param;
unsigned char dummy[4];
BUG_ON(nibble > 0xf);
command = priv->nibble_commands[nibble].command;
param = (command & 0x0f00) ?
dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
if (ps2_command(ps2dev, param, command))
return -1;
return 0;
}
static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
struct alps_data *priv = psmouse->private;
int i, nibble;
if (ps2_command(ps2dev, NULL, priv->addr_command))
return -1;
for (i = 12; i >= 0; i -= 4) {
nibble = (addr >> i) & 0xf;
if (alps_command_mode_send_nibble(psmouse, nibble))
return -1;
}
return 0;
}
static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
unsigned char param[4];
if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
return -1;
/*
* The address being read is returned in the first two bytes
* of the result. Check that this address matches the expected
* address.
*/
if (addr != ((param[0] << 8) | param[1]))
return -1;
return param[2];
}
static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
{
if (alps_command_mode_set_addr(psmouse, addr))
return -1;
return __alps_command_mode_read_reg(psmouse, addr);
}
static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
{
if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
return -1;
if (alps_command_mode_send_nibble(psmouse, value & 0xf))
return -1;
return 0;
}
static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
u8 value)
{
if (alps_command_mode_set_addr(psmouse, addr))
return -1;
return __alps_command_mode_write_reg(psmouse, value);
}
static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
int repeated_command, unsigned char *param)
{