Release 4.11 drivers/input/mouse/elantech.c
/*
* Elantech Touchpad driver (v6)
*
* Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
*
* 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.
*
* Trademarks are the property of their respective owners.
*/
#include <linux/delay.h>
#include <linux/dmi.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <asm/unaligned.h>
#include "psmouse.h"
#include "elantech.h"
#define elantech_debug(fmt, ...) \
do { \
if (etd->debug) \
psmouse_printk(KERN_DEBUG, psmouse, \
fmt, ##__VA_ARGS__); \
} while (0)
/*
* Send a Synaptics style sliced query command
*/
static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c,
unsigned char *param)
{
if (psmouse_sliced_command(psmouse, c) ||
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);
return -1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 55 | 90.16% | 1 | 50.00% |
| Dmitry Torokhov | 6 | 9.84% | 1 | 50.00% |
| Total | 61 | 100.00% | 2 | 100.00% |
/*
* V3 and later support this fast command
*/
static int elantech_send_cmd(struct psmouse *psmouse, unsigned char c,
unsigned char *param)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
if (ps2_command(ps2dev, NULL, ETP_PS2_CUSTOM_COMMAND) ||
ps2_command(ps2dev, NULL, c) ||
ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);
return -1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| JJ Ding | 79 | 100.00% | 1 | 100.00% |
| Total | 79 | 100.00% | 1 | 100.00% |
/*
* A retrying version of ps2_command
*/
static int elantech_ps2_command(struct psmouse *psmouse,
unsigned char *param, int command)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
struct elantech_data *etd = psmouse->private;
int rc;
int tries = ETP_PS2_COMMAND_TRIES;
do {
rc = ps2_command(ps2dev, param, command);
if (rc == 0)
break;
tries--;
elantech_debug("retrying ps2 command 0x%02x (%d).\n",
command, tries);
msleep(ETP_PS2_COMMAND_DELAY);
} while (tries > 0);
if (rc)
psmouse_err(psmouse, "ps2 command 0x%02x failed.\n", command);
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 102 | 95.33% | 1 | 33.33% |
| Dmitry Torokhov | 5 | 4.67% | 2 | 66.67% |
| Total | 107 | 100.00% | 3 | 100.00% |
/*
* Send an Elantech style special command to read a value from a register
*/
static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
unsigned char *val)
{
struct elantech_data *etd = psmouse->private;
unsigned char param[3];
int rc = 0;
if (reg < 0x07 || reg > 0x26)
return -1;
if (reg > 0x11 && reg < 0x20)
return -1;
switch (etd->hw_version) {
case 1:
if (psmouse_sliced_command(psmouse, ETP_REGISTER_READ) ||
psmouse_sliced_command(psmouse, reg) ||
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
rc = -1;
}
break;
case 2:
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READ) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, reg) ||
elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
rc = -1;
}
break;
case 3 ... 4:
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, reg) ||
elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
rc = -1;
}
break;
}
if (rc)
psmouse_err(psmouse, "failed to read register 0x%02x.\n", reg);
else if (etd->hw_version != 4)
*val = param[0];
else
*val = param[1];
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 193 | 69.93% | 1 | 20.00% |
| JJ Ding | 79 | 28.62% | 2 | 40.00% |
| Dmitry Torokhov | 4 | 1.45% | 2 | 40.00% |
| Total | 276 | 100.00% | 5 | 100.00% |
/*
* Send an Elantech style special command to write a register with a value
*/
static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,
unsigned char val)
{
struct elantech_data *etd = psmouse->private;
int rc = 0;
if (reg < 0x07 || reg > 0x26)
return -1;
if (reg > 0x11 && reg < 0x20)
return -1;
switch (etd->hw_version) {
case 1:
if (psmouse_sliced_command(psmouse, ETP_REGISTER_WRITE) ||
psmouse_sliced_command(psmouse, reg) ||
psmouse_sliced_command(psmouse, val) ||
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) {
rc = -1;
}
break;
case 2:
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_WRITE) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, reg) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, val) ||
elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
rc = -1;
}
break;
case 3:
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, reg) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, val) ||
elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
rc = -1;
}
break;
case 4:
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, reg) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) ||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
elantech_ps2_command(psmouse, NULL, val) ||
elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
rc = -1;
}
break;
}
if (rc)
psmouse_err(psmouse,
"failed to write register 0x%02x with value 0x%02x.\n",
reg, val);
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 204 | 53.83% | 1 | 20.00% |
| JJ Ding | 171 | 45.12% | 2 | 40.00% |
| Dmitry Torokhov | 4 | 1.06% | 2 | 40.00% |
| Total | 379 | 100.00% | 5 | 100.00% |
/*
* Dump a complete mouse movement packet to the syslog
*/
static void elantech_packet_dump(struct psmouse *psmouse)
{
psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n",
psmouse->pktsize, psmouse->packet);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 13 | 46.43% | 1 | 33.33% |
| Dmitry Torokhov | 13 | 46.43% | 1 | 33.33% |
| Benjamin Tissoires | 2 | 7.14% | 1 | 33.33% |
| Total | 28 | 100.00% | 3 | 100.00% |
/*
* Interpret complete data packets and report absolute mode input events for
* hardware version 1. (4 byte packets)
*/
static void elantech_report_absolute_v1(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;
int fingers;
if (etd->fw_version < 0x020000) {
/*
* byte 0: D U p1 p2 1 p3 R L
* byte 1: f 0 th tw x9 x8 y9 y8
*/
fingers = ((packet[1] & 0x80) >> 7) +
((packet[1] & 0x30) >> 4);
} else {
/*
* byte 0: n1 n0 p2 p1 1 p3 R L
* byte 1: 0 0 0 0 x9 x8 y9 y8
*/
fingers = (packet[0] & 0xc0) >> 6;
}
if (etd->jumpy_cursor) {
if (fingers != 1) {
etd->single_finger_reports = 0;
} else if (etd->single_finger_reports < 2) {
/* Discard first 2 reports of one finger, bogus */
etd->single_finger_reports++;
elantech_debug("discarding packet\n");
return;
}
}
input_report_key(dev, BTN_TOUCH, fingers != 0);
/*
* byte 2: x7 x6 x5 x4 x3 x2 x1 x0
* byte 3: y7 y6 y5 y4 y3 y2 y1 y0
*/
if (fingers) {
input_report_abs(dev, ABS_X,
((packet[1] & 0x0c) << 6) | packet[2]);
input_report_abs(dev, ABS_Y,
etd->y_max - (((packet[1] & 0x03) << 8) | packet[3]));
}
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
if (etd->fw_version < 0x020000 &&
(etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) {
/* rocker up */
input_report_key(dev, BTN_FORWARD, packet[0] & 0x40);
/* rocker down */
input_report_key(dev, BTN_BACK, packet[0] & 0x80);
}
input_sync(dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 291 | 87.39% | 2 | 28.57% |
| Éric Piel | 26 | 7.81% | 1 | 14.29% |
| Dmitry Torokhov | 7 | 2.10% | 2 | 28.57% |
| JJ Ding | 6 | 1.80% | 1 | 14.29% |
| Florian Ragwitz | 3 | 0.90% | 1 | 14.29% |
| Total | 333 | 100.00% | 7 | 100.00% |
static void elantech_set_slot(struct input_dev *dev, int slot, bool active,
unsigned int x, unsigned 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);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Éric Piel | 65 | 100.00% | 1 | 100.00% |
| Total | 65 | 100.00% | 1 | 100.00% |
/* x1 < x2 and y1 < y2 when two fingers, x = y = 0 when not pressed */
static void elantech_report_semi_mt_data(struct input_dev *dev,
unsigned int num_fingers,
unsigned int x1, unsigned int y1,
unsigned int x2, unsigned int y2)
{
elantech_set_slot(dev, 0, num_fingers != 0, x1, y1);
elantech_set_slot(dev, 1, num_fingers >= 2, x2, y2);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Éric Piel | 60 | 98.36% | 1 | 50.00% |
| Benjamin Tissoires | 1 | 1.64% | 1 | 50.00% |
| Total | 61 | 100.00% | 2 | 100.00% |
/*
* Interpret complete data packets and report absolute mode input events for
* hardware version 2. (6 byte packets)
*/
static void elantech_report_absolute_v2(struct psmouse *psmouse)
{
struct elantech_data *etd = psmouse->private;
struct input_dev *dev = psmouse->dev;
unsigned char *packet = psmouse->packet;
unsigned int fingers, x1 = 0, y1 = 0, x2 = 0, y2 = 0;
unsigned int width = 0, pres = 0;
/* byte 0: n1 n0 . . . . R L */
fingers = (packet[0] & 0xc0) >> 6;
switch (fingers) {
case 3:
/*
* Same as one finger, except report of more than 3 fingers:
* byte 3: n4 . w1 w0 . . . .
*/
if (packet[3] & 0x80)
fingers = 4;
/* pass through... */
case 1:
/*
* byte 1: . . . . x11 x10 x9 x8
* byte 2: x7 x6 x5 x4 x4 x2 x1 x0
*/
x1 = ((packet[1] & 0x0f) << 8) | packet[2];
/*
* byte 4: . . . . y11 y10 y9 y8
* byte 5: y7 y6 y5 y4 y3 y2 y1 y0
*/
y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4);
break;
case 2:
/*
* The coordinate of each finger is reported separately
* with a lower resolution for two finger touches:
* byte 0: . . ay8 ax8 . . . .
* byte 1: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0
*/
x1 = (((packet[0] & 0x10) << 4) | packet[1]) << 2;
/* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */
y1 = etd->y_max -
((((packet[0] & 0x20) << 3) | packet[2]) << 2);
/*
* byte 3: . . by8 bx8 . . . .
* byte 4: bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0
*/
x2 = (((packet[3] & 0x10) << 4) | packet[4]) << 2;
/* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */
y2 = etd->y_max -
((((packet[3] & 0x20) << 3) | packet[5]) << 2);
/* Unknown so just report sensible values */
pres = 127;
width = 7;
break;
}
input_report_key(dev, BTN_TOUCH, fingers != 0);
if (fingers != 0) {
input_report_abs(dev, ABS_X, x1);
input_report_abs(dev, ABS_Y, y1);
}
elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
if (etd->reports_pressure) {
input_report_abs(dev, ABS_PRESSURE, pres);
input_report_abs(dev, ABS_TOOL_WIDTH, width);
}
input_sync(dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Arjan Opmeer | 269 | 54.90% | 1 | 12.50% |
| Éric Piel | 152 | 31.02% | 3 | 37.50% |
| JJ Ding | 61 | 12.45% | 3 | 37.50% |
| Florian Ragwitz | 8 | 1.63% | 1 | 12.50% |
| Total | 490 | 100.00% | 8 | 100.00% |
static void elantech_report_trackpoint(struct psmouse *psmouse,
int packet_type)
{
/*
* byte 0: 0 0 sx sy 0 M R L
* byte 1:~sx 0 0 0 0 0 0 0
* byte 2:~sy 0 0 0 0 0 0 0
* byte 3: 0 0 ~sy ~sx 0 1 1 0
* byte 4: x7 x6 x5 x4 x3 x2 x1 x0
* byte 5: y7 y6 y5 y4 y3 y2 y1 y0
*
* x and y are written in two's complement spread
* over 9 bits with sx/sy the relative top bit and
* x7..x0 and y7..y0 the lower bits.
* The sign of y is opposite to what the input driver
* expects for a relative movement
*/
struct elantech_data *etd = psmouse->private;
struct input_dev *tp_dev = etd->tp_dev;
unsigned char *packet = psmouse->packet;
int x, y;
u32 t;
t = get_unaligned_le32(&packet[0]);
switch (t & ~7U) {
case 0x06000030U:
case 0x16008020U:
case 0x26800010U:
case 0x36808000U:
x = packet[4] - (int)((packet[1]^0x80) << 1);
y = (int)((packet[2]^0x80) << 1) - packet[5];
input_report_key(tp_dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(tp_dev, BTN_RIGHT, packet[0] & 0x02);
input_report_key(tp_dev, BTN_MIDDLE, packet[0] & 0x04);
input_report_rel(tp_dev, REL_X, x);
input_report_rel(tp_dev, REL_Y, y);
input_sync(tp_dev);
break;
default:
/* Dump unexpected packet sequences if debug=1 (default) */
if (etd->debug == 1)
elantech_packet_dump(psmouse);
break;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ulrik De Bie | 210 | 100.00% | 1 | 100.00% |
| Total | 210 | 100.00% | 1 | 100.00% |
/*
* Interpret complete data packets and report absolute mode input events for
* hardware version 3. (12 byte packets for two fingers)
*/
static void elantech_report_absolute_v3(struct psmouse *psmouse,
int packet_type)
{
struct input_dev *dev = psmouse->dev;
struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;
unsigned int fingers = 0, x1 = 0, y1 = 0, x2 = 0, y2 = 0;
unsigned int width = 0, pres = 0;
/* byte 0: n1 n0 . . . . R L */
fingers = (packet[0] & 0xc0) >> 6;
switch (fingers) {
case 3:
case 1:
/*
* byte 1: . . . . x11 x10 x9 x8
* byte 2: x7 x6 x5 x4 x4 x2 x1 x0
*/
x1 = ((packet[1] & 0x0f) << 8) | packet[2];
/*
* byte 4: . . . . y11 y10 y9 y8
* byte 5: y7 y6 y5 y4 y3 y2 y1 y0
*/
y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
break;
case 2:
if (packet_type == PACKET_V3_HEAD) {
/*
* byte 1: . . . . ax11 ax10 ax9 ax8
* byte 2: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0
*/
etd->mt[0].x = ((packet[1] & 0x0f) << 8) | packet[2];
/*
* byte 4: . . . . ay11 ay10 ay9 ay8
* byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0
*/
etd->mt[0].y = etd->y_max -
(((packet[4] & 0x0f) << 8) | packet[5]);
/*
* wait for next packet
*/
return;
}
/* packet_type == PACKET_V3_TAIL */
x1 = etd->mt[0].x;
y1 = etd->mt[0].y;
x2 = ((packet[1] & 0x0f) << 8) | packet[2];
y2 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
break;
}
pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4);
input_report_key(dev, BTN_TOUCH, fingers != 0);
if (fingers != 0) {
input_report_abs(dev, ABS_X, x1);
input_report_abs(dev, ABS_Y, y1);
}
elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
/* For clickpads map both buttons to BTN_LEFT */
if (etd->fw_version & 0x001000) {
input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
} else {
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
}
input_report_abs(dev, ABS_PRESSURE, pres);
input_report_abs(dev, ABS_TOOL_WIDTH, width);
input_sync(dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| JJ Ding | 423 | 83.10% | 2 | 50.00% |
| Arjan Opmeer | 58 | 11.39% | 1 | 25.00% |
| Hans de Goede | 28 | 5.50% | 1 | 25.00% |
| Total | 509 | 100.00% | 4 | 100.00% |
static void elantech_input_sync_v4(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;
/* For clickpads map both buttons to BTN_LEFT */
if (etd->fw_version & 0x001000) {
input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
} else {
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
input_report_key(dev, BTN_MIDDLE, packet[0] & 0x04);
}
input_mt_report_pointer_emulation(dev, true);
input_sync(dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| JJ Ding | 55 | 45.83% | 2 | 40.00% |
| Hans de Goede | 51 | 42.50% | 2 | 40.00% |
| Ulrik De Bie | 14 | 11.67% | 1 | 20.00% |
| Total | 120 | 100.00% | 5 | 100.00% |
static void process_packet_status_v4(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
unsigned char *packet = psmouse->packet;
unsigned fingers;
int i;
/* notify finger state change */
fingers = packet[1] & 0x1f;
for (i = 0; i < ETP_MAX_FINGERS; i++) {
if ((fingers & (1 << i)) == 0) {
input_mt_slot(dev, i);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, false);
}
}
elantech_input_sync_v4(psmouse);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| JJ Ding | 97 | 100.00% | 2 | 100.00% |
| Total | 97 | 100.00% | 2 | 100.00% |
static void process_packet_head_v4(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;
int id = ((packet[3] & 0xe0) >> 5) - 1;
int pres, traces;
if (id < 0)
return;
etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2];
etd->mt[id].y = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]);
pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
traces = (packet[0] & 0xf0