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Diffstat (limited to 'drivers/input/mouse/elantech.c')
-rw-r--r--drivers/input/mouse/elantech.c1269
1 files changed, 1049 insertions, 220 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 57b2637e153a..79ad98cc1e79 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1,28 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* 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/i2c.h>
#include <linux/input.h>
#include <linux/input/mt.h>
+#include <linux/platform_device.h>
#include <linux/serio.h>
#include <linux/libps2.h>
+#include <linux/unaligned.h>
#include "psmouse.h"
#include "elantech.h"
+#include "elan_i2c.h"
#define elantech_debug(fmt, ...) \
do { \
- if (etd->debug) \
+ if (etd->info.debug) \
psmouse_printk(KERN_DEBUG, psmouse, \
fmt, ##__VA_ARGS__); \
} while (0)
@@ -33,7 +35,7 @@
static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c,
unsigned char *param)
{
- if (psmouse_sliced_command(psmouse, c) ||
+ if (ps2_sliced_command(&psmouse->ps2dev, c) ||
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c);
return -1;
@@ -88,6 +90,47 @@ static int elantech_ps2_command(struct psmouse *psmouse,
}
/*
+ * Send an Elantech style special command to read 3 bytes from a register
+ */
+static int elantech_read_reg_params(struct psmouse *psmouse, u8 reg, u8 *param)
+{
+ 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)) {
+ psmouse_err(psmouse,
+ "failed to read register %#02x\n", reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/*
+ * Send an Elantech style special command to write a register with a parameter
+ */
+static int elantech_write_reg_params(struct psmouse *psmouse, u8 reg, u8 *param)
+{
+ 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, param[0]) ||
+ elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
+ elantech_ps2_command(psmouse, NULL, param[1]) ||
+ elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
+ psmouse_err(psmouse,
+ "failed to write register %#02x with value %#02x%#02x\n",
+ reg, param[0], param[1]);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/*
* Send an Elantech style special command to read a value from a register
*/
static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
@@ -103,10 +146,10 @@ static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
if (reg > 0x11 && reg < 0x20)
return -1;
- switch (etd->hw_version) {
+ switch (etd->info.hw_version) {
case 1:
- if (psmouse_sliced_command(psmouse, ETP_REGISTER_READ) ||
- psmouse_sliced_command(psmouse, reg) ||
+ if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_READ) ||
+ ps2_sliced_command(&psmouse->ps2dev, reg) ||
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
rc = -1;
}
@@ -135,7 +178,7 @@ static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
if (rc)
psmouse_err(psmouse, "failed to read register 0x%02x.\n", reg);
- else if (etd->hw_version != 4)
+ else if (etd->info.hw_version != 4)
*val = param[0];
else
*val = param[1];
@@ -158,11 +201,11 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,
if (reg > 0x11 && reg < 0x20)
return -1;
- switch (etd->hw_version) {
+ switch (etd->info.hw_version) {
case 1:
- if (psmouse_sliced_command(psmouse, ETP_REGISTER_WRITE) ||
- psmouse_sliced_command(psmouse, reg) ||
- psmouse_sliced_command(psmouse, val) ||
+ if (ps2_sliced_command(&psmouse->ps2dev, ETP_REGISTER_WRITE) ||
+ ps2_sliced_command(&psmouse->ps2dev, reg) ||
+ ps2_sliced_command(&psmouse->ps2dev, val) ||
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) {
rc = -1;
}
@@ -220,12 +263,54 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,
*/
static void elantech_packet_dump(struct psmouse *psmouse)
{
- int i;
+ psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n",
+ psmouse->pktsize, psmouse->packet);
+}
- psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [");
- for (i = 0; i < psmouse->pktsize; i++)
- printk("%s0x%02x ", i ? ", " : " ", psmouse->packet[i]);
- printk("]\n");
+/*
+ * Advertise INPUT_PROP_BUTTONPAD for clickpads. The testing of bit 12 in
+ * fw_version for this is based on the following fw_version & caps table:
+ *
+ * Laptop-model: fw_version: caps: buttons:
+ * Acer S3 0x461f00 10, 13, 0e clickpad
+ * Acer S7-392 0x581f01 50, 17, 0d clickpad
+ * Acer V5-131 0x461f02 01, 16, 0c clickpad
+ * Acer V5-551 0x461f00 ? clickpad
+ * Asus K53SV 0x450f01 78, 15, 0c 2 hw buttons
+ * Asus G46VW 0x460f02 00, 18, 0c 2 hw buttons
+ * Asus G750JX 0x360f00 00, 16, 0c 2 hw buttons
+ * Asus TP500LN 0x381f17 10, 14, 0e clickpad
+ * Asus X750JN 0x381f17 10, 14, 0e clickpad
+ * Asus UX31 0x361f00 20, 15, 0e clickpad
+ * Asus UX32VD 0x361f02 00, 15, 0e clickpad
+ * Avatar AVIU-145A2 0x361f00 ? clickpad
+ * Fujitsu CELSIUS H760 0x570f02 40, 14, 0c 3 hw buttons (**)
+ * Fujitsu CELSIUS H780 0x5d0f02 41, 16, 0d 3 hw buttons (**)
+ * Fujitsu LIFEBOOK E544 0x470f00 d0, 12, 09 2 hw buttons
+ * Fujitsu LIFEBOOK E546 0x470f00 50, 12, 09 2 hw buttons
+ * Fujitsu LIFEBOOK E547 0x470f00 50, 12, 09 2 hw buttons
+ * Fujitsu LIFEBOOK E554 0x570f01 40, 14, 0c 2 hw buttons
+ * Fujitsu LIFEBOOK E557 0x570f01 40, 14, 0c 2 hw buttons
+ * Fujitsu T725 0x470f01 05, 12, 09 2 hw buttons
+ * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**)
+ * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons
+ * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*)
+ * Lenovo L530 0x350f02 b9, 15, 0c 2 hw buttons (*)
+ * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons
+ * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad
+ * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad
+ * Samsung NP900X3E-A02 0x575f03 ? clickpad
+ * Samsung NP-QX410 0x851b00 19, 14, 0c clickpad
+ * Samsung RC512 0x450f00 08, 15, 0c 2 hw buttons
+ * Samsung RF710 0x450f00 ? 2 hw buttons
+ * System76 Pangolin 0x250f01 ? 2 hw buttons
+ * (*) + 3 trackpoint buttons
+ * (**) + 0 trackpoint buttons
+ * Note: Lenovo L430 and Lenovo L530 have the same fw_version/caps
+ */
+static inline int elantech_is_buttonpad(struct elantech_device_info *info)
+{
+ return info->fw_version & 0x001000;
}
/*
@@ -239,7 +324,7 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse)
unsigned char *packet = psmouse->packet;
int fingers;
- if (etd->fw_version < 0x020000) {
+ if (etd->info.fw_version < 0x020000) {
/*
* byte 0: D U p1 p2 1 p3 R L
* byte 1: f 0 th tw x9 x8 y9 y8
@@ -254,7 +339,7 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse)
fingers = (packet[0] & 0xc0) >> 6;
}
- if (etd->jumpy_cursor) {
+ if (etd->info.jumpy_cursor) {
if (fingers != 1) {
etd->single_finger_reports = 0;
} else if (etd->single_finger_reports < 2) {
@@ -281,11 +366,11 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse)
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)) {
+ psmouse_report_standard_buttons(dev, packet[0]);
+
+ if (etd->info.fw_version < 0x020000 &&
+ (etd->info.capabilities[0] & ETP_CAP_HAS_ROCKER)) {
/* rocker up */
input_report_key(dev, BTN_FORWARD, packet[0] & 0x40);
/* rocker down */
@@ -313,7 +398,7 @@ static void elantech_report_semi_mt_data(struct input_dev *dev,
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);
+ elantech_set_slot(dev, 1, num_fingers >= 2, x2, y2);
}
/*
@@ -339,7 +424,7 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
*/
if (packet[3] & 0x80)
fingers = 4;
- /* pass through... */
+ fallthrough;
case 1:
/*
* byte 1: . . . . x11 x10 x9 x8
@@ -392,9 +477,8 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
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) {
+ psmouse_report_standard_buttons(dev, packet[0]);
+ if (etd->info.reports_pressure) {
input_report_abs(dev, ABS_PRESSURE, pres);
input_report_abs(dev, ABS_TOOL_WIDTH, width);
}
@@ -402,6 +486,71 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
input_sync(dev);
}
+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:
+
+ /*
+ * This firmware misreport coordinates for trackpoint
+ * occasionally. Discard packets outside of [-127, 127] range
+ * to prevent cursor jumps.
+ */
+ if (packet[4] == 0x80 || packet[5] == 0x80 ||
+ packet[1] >> 7 == packet[4] >> 7 ||
+ packet[2] >> 7 == packet[5] >> 7) {
+ elantech_debug("discarding packet [%6ph]\n", packet);
+ break;
+
+ }
+ x = packet[4] - (int)((packet[1]^0x80) << 1);
+ y = (int)((packet[2]^0x80) << 1) - packet[5];
+
+ psmouse_report_standard_buttons(tp_dev, packet[0]);
+
+ 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->info.debug == 1)
+ elantech_packet_dump(psmouse);
+
+ break;
+ }
+}
+
/*
* Interpret complete data packets and report absolute mode input events for
* hardware version 3. (12 byte packets for two fingers)
@@ -472,8 +621,13 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse,
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);
+
+ /* For clickpads map both buttons to BTN_LEFT */
+ if (elantech_is_buttonpad(&etd->info))
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
+ else
+ psmouse_report_standard_buttons(dev, packet[0]);
+
input_report_abs(dev, ABS_PRESSURE, pres);
input_report_abs(dev, ABS_TOOL_WIDTH, width);
@@ -483,9 +637,15 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse,
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;
- input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
+ /* For clickpads map both buttons to BTN_LEFT */
+ if (elantech_is_buttonpad(&etd->info))
+ input_report_key(dev, BTN_LEFT, packet[0] & 0x03);
+ else
+ psmouse_report_standard_buttons(dev, packet[0]);
+
input_mt_report_pointer_emulation(dev, true);
input_sync(dev);
}
@@ -514,10 +674,11 @@ 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 id;
int pres, traces;
- if (id < 0)
+ id = ((packet[3] & 0xe0) >> 5) - 1;
+ if (id < 0 || id >= ETP_MAX_FINGERS)
return;
etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2];
@@ -547,7 +708,7 @@ static void process_packet_motion_v4(struct psmouse *psmouse)
int id, sid;
id = ((packet[0] & 0xe0) >> 5) - 1;
- if (id < 0)
+ if (id < 0 || id >= ETP_MAX_FINGERS)
return;
sid = ((packet[3] & 0xe0) >> 5) - 1;
@@ -568,7 +729,7 @@ static void process_packet_motion_v4(struct psmouse *psmouse)
input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x);
input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y);
- if (sid >= 0) {
+ if (sid >= 0 && sid < ETP_MAX_FINGERS) {
etd->mt[sid].x += delta_x2 * weight;
etd->mt[sid].y -= delta_y2 * weight;
input_mt_slot(dev, sid);
@@ -609,7 +770,7 @@ static int elantech_packet_check_v1(struct psmouse *psmouse)
unsigned char p1, p2, p3;
/* Parity bits are placed differently */
- if (etd->fw_version < 0x020000) {
+ if (etd->info.fw_version < 0x020000) {
/* byte 0: D U p1 p2 1 p3 R L */
p1 = (packet[0] & 0x20) >> 5;
p2 = (packet[0] & 0x10) >> 4;
@@ -632,7 +793,9 @@ static int elantech_debounce_check_v2(struct psmouse *psmouse)
* When we encounter packet that matches this exactly, it means the
* hardware is in debounce status. Just ignore the whole packet.
*/
- const u8 debounce_packet[] = { 0x84, 0xff, 0xff, 0x02, 0xff, 0xff };
+ static const u8 debounce_packet[] = {
+ 0x84, 0xff, 0xff, 0x02, 0xff, 0xff
+ };
unsigned char *packet = psmouse->packet;
return !memcmp(packet, debounce_packet, sizeof(debounce_packet));
@@ -652,7 +815,7 @@ static int elantech_packet_check_v2(struct psmouse *psmouse)
* With all three cases, if the constant bits are not exactly what I
* expected, I consider them invalid.
*/
- if (etd->reports_pressure)
+ if (etd->info.reports_pressure)
return (packet[0] & 0x0c) == 0x04 &&
(packet[3] & 0x0f) == 0x02;
@@ -672,7 +835,10 @@ static int elantech_packet_check_v2(struct psmouse *psmouse)
*/
static int elantech_packet_check_v3(struct psmouse *psmouse)
{
- const u8 debounce_packet[] = { 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff };
+ struct elantech_data *etd = psmouse->private;
+ static const u8 debounce_packet[] = {
+ 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff
+ };
unsigned char *packet = psmouse->packet;
/*
@@ -682,19 +848,60 @@ static int elantech_packet_check_v3(struct psmouse *psmouse)
if (!memcmp(packet, debounce_packet, sizeof(debounce_packet)))
return PACKET_DEBOUNCE;
- if ((packet[0] & 0x0c) == 0x04 && (packet[3] & 0xcf) == 0x02)
- return PACKET_V3_HEAD;
+ /*
+ * If the hardware flag 'crc_enabled' is set the packets have
+ * different signatures.
+ */
+ if (etd->info.crc_enabled) {
+ if ((packet[3] & 0x09) == 0x08)
+ return PACKET_V3_HEAD;
+
+ if ((packet[3] & 0x09) == 0x09)
+ return PACKET_V3_TAIL;
+ } else {
+ if ((packet[0] & 0x0c) == 0x04 && (packet[3] & 0xcf) == 0x02)
+ return PACKET_V3_HEAD;
- if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c)
- return PACKET_V3_TAIL;
+ if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c)
+ return PACKET_V3_TAIL;
+ if ((packet[3] & 0x0f) == 0x06)
+ return PACKET_TRACKPOINT;
+ }
return PACKET_UNKNOWN;
}
static int elantech_packet_check_v4(struct psmouse *psmouse)
{
+ struct elantech_data *etd = psmouse->private;
unsigned char *packet = psmouse->packet;
unsigned char packet_type = packet[3] & 0x03;
+ unsigned int ic_version;
+ bool sanity_check;
+
+ if (etd->tp_dev && (packet[3] & 0x0f) == 0x06)
+ return PACKET_TRACKPOINT;
+
+ /* This represents the version of IC body. */
+ ic_version = (etd->info.fw_version & 0x0f0000) >> 16;
+
+ /*
+ * Sanity check based on the constant bits of a packet.
+ * The constant bits change depending on the value of
+ * the hardware flag 'crc_enabled' and the version of
+ * the IC body, but are the same for every packet,
+ * regardless of the type.
+ */
+ if (etd->info.crc_enabled)
+ sanity_check = ((packet[3] & 0x08) == 0x00);
+ else if (ic_version == 7 && etd->info.samples[1] == 0x2A)
+ sanity_check = ((packet[3] & 0x1c) == 0x10);
+ else
+ sanity_check = ((packet[0] & 0x08) == 0x00 &&
+ (packet[3] & 0x1c) == 0x10);
+
+ if (!sanity_check)
+ return PACKET_UNKNOWN;
switch (packet_type) {
case 0:
@@ -721,12 +928,12 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
if (psmouse->pktcnt < psmouse->pktsize)
return PSMOUSE_GOOD_DATA;
- if (etd->debug > 1)
+ if (etd->info.debug > 1)
elantech_packet_dump(psmouse);
- switch (etd->hw_version) {
+ switch (etd->info.hw_version) {
case 1:
- if (etd->paritycheck && !elantech_packet_check_v1(psmouse))
+ if (etd->info.paritycheck && !elantech_packet_check_v1(psmouse))
return PSMOUSE_BAD_DATA;
elantech_report_absolute_v1(psmouse);
@@ -737,7 +944,7 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
if (elantech_debounce_check_v2(psmouse))
return PSMOUSE_FULL_PACKET;
- if (etd->paritycheck && !elantech_packet_check_v2(psmouse))
+ if (etd->info.paritycheck && !elantech_packet_check_v2(psmouse))
return PSMOUSE_BAD_DATA;
elantech_report_absolute_v2(psmouse);
@@ -745,22 +952,40 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
case 3:
packet_type = elantech_packet_check_v3(psmouse);
- /* ignore debounce */
- if (packet_type == PACKET_DEBOUNCE)
- return PSMOUSE_FULL_PACKET;
-
- if (packet_type == PACKET_UNKNOWN)
+ switch (packet_type) {
+ case PACKET_UNKNOWN:
return PSMOUSE_BAD_DATA;
- elantech_report_absolute_v3(psmouse, packet_type);
+ case PACKET_DEBOUNCE:
+ /* ignore debounce */
+ break;
+
+ case PACKET_TRACKPOINT:
+ elantech_report_trackpoint(psmouse, packet_type);
+ break;
+
+ default:
+ elantech_report_absolute_v3(psmouse, packet_type);
+ break;
+ }
+
break;
case 4:
packet_type = elantech_packet_check_v4(psmouse);
- if (packet_type == PACKET_UNKNOWN)
+ switch (packet_type) {
+ case PACKET_UNKNOWN:
return PSMOUSE_BAD_DATA;
- elantech_report_absolute_v4(psmouse, packet_type);
+ case PACKET_TRACKPOINT:
+ elantech_report_trackpoint(psmouse, packet_type);
+ break;
+
+ default:
+ elantech_report_absolute_v4(psmouse, packet_type);
+ break;
+ }
+
break;
}
@@ -768,6 +993,21 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
}
/*
+ * This writes the reg_07 value again to the hardware at the end of every
+ * set_rate call because the register loses its value. reg_07 allows setting
+ * absolute mode on v4 hardware
+ */
+static void elantech_set_rate_restore_reg_07(struct psmouse *psmouse,
+ unsigned int rate)
+{
+ struct elantech_data *etd = psmouse->private;
+
+ etd->original_set_rate(psmouse, rate);
+ if (elantech_write_reg(psmouse, 0x07, etd->reg_07))
+ psmouse_err(psmouse, "restoring reg_07 failed\n");
+}
+
+/*
* Put the touchpad into absolute mode
*/
static int elantech_set_absolute_mode(struct psmouse *psmouse)
@@ -777,7 +1017,7 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse)
int tries = ETP_READ_BACK_TRIES;
int rc = 0;
- switch (etd->hw_version) {
+ switch (etd->info.hw_version) {
case 1:
etd->reg_10 = 0x16;
etd->reg_11 = 0x8f;
@@ -800,7 +1040,11 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse)
break;
case 3:
- etd->reg_10 = 0x0b;
+ if (etd->info.set_hw_resolution)
+ etd->reg_10 = 0x0b;
+ else
+ etd->reg_10 = 0x01;
+
if (elantech_write_reg(psmouse, 0x10, etd->reg_10))
rc = -1;
@@ -833,7 +1077,7 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse)
if (rc) {
psmouse_err(psmouse,
"failed to read back register 0x10.\n");
- } else if (etd->hw_version == 1 &&
+ } else if (etd->info.hw_version == 1 &&
!(val & ETP_R10_ABSOLUTE_MODE)) {
psmouse_err(psmouse,
"touchpad refuses to switch to absolute mode.\n");
@@ -848,87 +1092,6 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse)
return rc;
}
-static int elantech_set_range(struct psmouse *psmouse,
- unsigned int *x_min, unsigned int *y_min,
- unsigned int *x_max, unsigned int *y_max,
- unsigned int *width)
-{
- struct elantech_data *etd = psmouse->private;
- unsigned char param[3];
- unsigned char traces;
-
- switch (etd->hw_version) {
- case 1:
- *x_min = ETP_XMIN_V1;
- *y_min = ETP_YMIN_V1;
- *x_max = ETP_XMAX_V1;
- *y_max = ETP_YMAX_V1;
- break;
-
- case 2:
- if (etd->fw_version == 0x020800 ||
- etd->fw_version == 0x020b00 ||
- etd->fw_version == 0x020030) {
- *x_min = ETP_XMIN_V2;
- *y_min = ETP_YMIN_V2;
- *x_max = ETP_XMAX_V2;
- *y_max = ETP_YMAX_V2;
- } else {
- int i;
- int fixed_dpi;
-
- i = (etd->fw_version > 0x020800 &&
- etd->fw_version < 0x020900) ? 1 : 2;
-
- if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
- return -1;
-
- fixed_dpi = param[1] & 0x10;
-
- if (((etd->fw_version >> 16) == 0x14) && fixed_dpi) {
- if (etd->send_cmd(psmouse, ETP_SAMPLE_QUERY, param))
- return -1;
-
- *x_max = (etd->capabilities[1] - i) * param[1] / 2;
- *y_max = (etd->capabilities[2] - i) * param[2] / 2;
- } else if (etd->fw_version == 0x040216) {
- *x_max = 819;
- *y_max = 405;
- } else if (etd->fw_version == 0x040219 || etd->fw_version == 0x040215) {
- *x_max = 900;
- *y_max = 500;
- } else {
- *x_max = (etd->capabilities[1] - i) * 64;
- *y_max = (etd->capabilities[2] - i) * 64;
- }
- }
- break;
-
- case 3:
- if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
- return -1;
-
- *x_max = (0x0f & param[0]) << 8 | param[1];
- *y_max = (0xf0 & param[0]) << 4 | param[2];
- break;
-
- case 4:
- if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
- return -1;
-
- *x_max = (0x0f & param[0]) << 8 | param[1];
- *y_max = (0xf0 & param[0]) << 4 | param[2];
- traces = etd->capabilities[1];
- if ((traces < 2) || (traces > *x_max))
- return -1;
-
- *width = *x_max / (traces - 1);
- break;
- }
-
- return 0;
-}
-
/*
* (value from firmware) * 10 + 790 = dpi
* we also have to convert dpi to dots/mm (*10/254 to avoid floating point)
@@ -940,7 +1103,8 @@ static unsigned int elantech_convert_res(unsigned int val)
static int elantech_get_resolution_v4(struct psmouse *psmouse,
unsigned int *x_res,
- unsigned int *y_res)
+ unsigned int *y_res,
+ unsigned int *bus)
{
unsigned char param[3];
@@ -949,10 +1113,52 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse,
*x_res = elantech_convert_res(param[1] & 0x0f);
*y_res = elantech_convert_res((param[1] & 0xf0) >> 4);
+ *bus = param[2];
return 0;
}
+static void elantech_set_buttonpad_prop(struct psmouse *psmouse)
+{
+ struct input_dev *dev = psmouse->dev;
+ struct elantech_data *etd = psmouse->private;
+
+ if (elantech_is_buttonpad(&etd->info)) {
+ __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
+ __clear_bit(BTN_RIGHT, dev->keybit);
+ }
+}
+
+/*
+ * Some hw_version 4 models do have a middle button
+ */
+static const struct dmi_system_id elantech_dmi_has_middle_button[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+ {
+ /* Fujitsu H730 has a middle button */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"),
+ },
+ },
+ {
+ /* Fujitsu H760 also has a middle button */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"),
+ },
+ },
+ {
+ /* Fujitsu H780 also has a middle button */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H780"),
+ },
+ },
+#endif
+ { }
+};
+
/*
* Set the appropriate event bits for the input subsystem
*/
@@ -960,11 +1166,10 @@ static int elantech_set_input_params(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
struct elantech_data *etd = psmouse->private;
- unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0;
- unsigned int x_res = 0, y_res = 0;
-
- if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width))
- return -1;
+ struct elantech_device_info *info = &etd->info;
+ unsigned int x_min = info->x_min, y_min = info->y_min,
+ x_max = info->x_max, y_max = info->y_max,
+ width = info->width;
__set_bit(INPUT_PROP_POINTER, dev->propbit);
__set_bit(EV_KEY, dev->evbit);
@@ -972,6 +1177,8 @@ static int elantech_set_input_params(struct psmouse *psmouse)
__clear_bit(EV_REL, dev->evbit);
__set_bit(BTN_LEFT, dev->keybit);
+ if (info->has_middle_button)
+ __set_bit(BTN_MIDDLE, dev->keybit);
__set_bit(BTN_RIGHT, dev->keybit);
__set_bit(BTN_TOUCH, dev->keybit);
@@ -979,11 +1186,11 @@ static int elantech_set_input_params(struct psmouse *psmouse)
__set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
__set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
- switch (etd->hw_version) {
+ switch (info->hw_version) {
case 1:
/* Rocker button */
- if (etd->fw_version < 0x020000 &&
- (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) {
+ if (info->fw_version < 0x020000 &&
+ (info->capabilities[0] & ETP_CAP_HAS_ROCKER)) {
__set_bit(BTN_FORWARD, dev->keybit);
__set_bit(BTN_BACK, dev->keybit);
}
@@ -994,38 +1201,29 @@ static int elantech_set_input_params(struct psmouse *psmouse)
case 2:
__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
- /* fall through */
+ fallthrough;
case 3:
+ if (info->hw_version == 3)
+ elantech_set_buttonpad_prop(psmouse);
input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0);
input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0);
- if (etd->reports_pressure) {
+ if (info->reports_pressure) {
input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2,
ETP_PMAX_V2, 0, 0);
input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
ETP_WMAX_V2, 0, 0);
}
- input_mt_init_slots(dev, 2, 0);
+ input_mt_init_slots(dev, 2, INPUT_MT_SEMI_MT);
input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
break;
case 4:
- if (elantech_get_resolution_v4(psmouse, &x_res, &y_res)) {
- /*
- * if query failed, print a warning and leave the values
- * zero to resemble synaptics.c behavior.
- */
- psmouse_warn(psmouse, "couldn't query resolution data.\n");
- }
- /* v4 is clickpad, with only one button. */
- __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
- __clear_bit(BTN_RIGHT, dev->keybit);
+ elantech_set_buttonpad_prop(psmouse);
__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
/* For X to recognize me as touchpad. */
input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0);
input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0);
- input_abs_set_res(dev, ABS_X, x_res);
- input_abs_set_res(dev, ABS_Y, y_res);
/*
* range of pressure and width is the same as v2,
* report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility.
@@ -1038,8 +1236,6 @@ static int elantech_set_input_params(struct psmouse *psmouse)
input_mt_init_slots(dev, ETP_MAX_FINGERS, 0);
input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
- input_abs_set_res(dev, ABS_MT_POSITION_X, x_res);
- input_abs_set_res(dev, ABS_MT_POSITION_Y, y_res);
input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2,
ETP_PMAX_V2, 0, 0);
/*
@@ -1051,6 +1247,13 @@ static int elantech_set_input_params(struct psmouse *psmouse)
break;
}
+ input_abs_set_res(dev, ABS_X, info->x_res);
+ input_abs_set_res(dev, ABS_Y, info->y_res);
+ if (info->hw_version > 1) {
+ input_abs_set_res(dev, ABS_MT_POSITION_X, info->x_res);
+ input_abs_set_res(dev, ABS_MT_POSITION_Y, info->y_res);
+ }
+
etd->y_max = y_max;
etd->width = width;
@@ -1096,7 +1299,7 @@ static ssize_t elantech_set_int_attr(struct psmouse *psmouse,
return err;
/* Do we need to preserve some bits for version 2 hardware too? */
- if (etd->hw_version == 1) {
+ if (etd->info.hw_version == 1) {
if (attr->reg == 0x10)
/* Force absolute mode always on */
value |= ETP_R10_ABSOLUTE_MODE;
@@ -1116,11 +1319,22 @@ static ssize_t elantech_set_int_attr(struct psmouse *psmouse,
.field_offset = offsetof(struct elantech_data, _name), \
.reg = _register, \
}; \
- PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
+ PSMOUSE_DEFINE_ATTR(_name, 0644, \
&elantech_attr_##_name, \
elantech_show_int_attr, \
elantech_set_int_attr)
+#define ELANTECH_INFO_ATTR(_name) \
+ static struct elantech_attr_data elantech_attr_##_name = { \
+ .field_offset = offsetof(struct elantech_data, info) + \
+ offsetof(struct elantech_device_info, _name), \
+ .reg = 0, \
+ }; \
+ PSMOUSE_DEFINE_ATTR(_name, 0644, \
+ &elantech_attr_##_name, \
+ elantech_show_int_attr, \
+ elantech_set_int_attr)
+
ELANTECH_INT_ATTR(reg_07, 0x07);
ELANTECH_INT_ATTR(reg_10, 0x10);
ELANTECH_INT_ATTR(reg_11, 0x11);
@@ -1131,8 +1345,9 @@ ELANTECH_INT_ATTR(reg_23, 0x23);
ELANTECH_INT_ATTR(reg_24, 0x24);
ELANTECH_INT_ATTR(reg_25, 0x25);
ELANTECH_INT_ATTR(reg_26, 0x26);
-ELANTECH_INT_ATTR(debug, 0);
-ELANTECH_INT_ATTR(paritycheck, 0);
+ELANTECH_INFO_ATTR(debug);
+ELANTECH_INFO_ATTR(paritycheck);
+ELANTECH_INFO_ATTR(crc_enabled);
static struct attribute *elantech_attrs[] = {
&psmouse_attr_reg_07.dattr.attr,
@@ -1147,10 +1362,11 @@ static struct attribute *elantech_attrs[] = {
&psmouse_attr_reg_26.dattr.attr,
&psmouse_attr_debug.dattr.attr,
&psmouse_attr_paritycheck.dattr.attr,
+ &psmouse_attr_crc_enabled.dattr.attr,
NULL
};
-static struct attribute_group elantech_attr_group = {
+static const struct attribute_group elantech_attr_group = {
.attrs = elantech_attrs,
};
@@ -1165,6 +1381,14 @@ static bool elantech_is_signature_valid(const unsigned char *param)
if (param[1] == 0)
return true;
+ /*
+ * Some hw_version >= 4 models have a revision higher then 20. Meaning
+ * that param[2] may be 10 or 20, skip the rates check for these.
+ */
+ if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f &&
+ param[2] < 40)
+ return true;
+
for (i = 0; i < ARRAY_SIZE(rates); i++)
if (param[2] == rates[i])
return false;
@@ -1180,7 +1404,7 @@ int elantech_detect(struct psmouse *psmouse, bool set_properties)
struct ps2dev *ps2dev = &psmouse->ps2dev;
unsigned char param[3];
- ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
@@ -1236,6 +1460,16 @@ int elantech_detect(struct psmouse *psmouse, bool set_properties)
*/
static void elantech_disconnect(struct psmouse *psmouse)
{
+ struct elantech_data *etd = psmouse->private;
+
+ /*
+ * We might have left a breadcrumb when trying to
+ * set up SMbus companion.
+ */
+ psmouse_smbus_cleanup(psmouse);
+
+ if (etd->tp_dev)
+ input_unregister_device(etd->tp_dev);
sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
&elantech_attr_group);
kfree(psmouse->private);
@@ -1243,15 +1477,46 @@ static void elantech_disconnect(struct psmouse *psmouse)
}
/*
+ * Some hw_version 4 models fail to properly activate absolute mode on
+ * resume without going through disable/enable cycle.
+ */
+static const struct dmi_system_id elantech_needs_reenable[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+ {
+ /* Lenovo N24 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "81AF"),
+ },
+ },
+#endif
+ { }
+};
+
+/*
* Put the touchpad back into absolute mode when reconnecting
*/
static int elantech_reconnect(struct psmouse *psmouse)
{
+ int err;
+
psmouse_reset(psmouse);
if (elantech_detect(psmouse, 0))
return -1;
+ if (dmi_check_system(elantech_needs_reenable)) {
+ err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE);
+ if (err)
+ psmouse_warn(psmouse, "failed to deactivate mouse on %s: %d\n",
+ psmouse->ps2dev.serio->phys, err);
+
+ err = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
+ if (err)
+ psmouse_warn(psmouse, "failed to reactivate mouse on %s: %d\n",
+ psmouse->ps2dev.serio->phys, err);
+ }
+
if (elantech_set_absolute_mode(psmouse)) {
psmouse_err(psmouse,
"failed to put touchpad back into absolute mode.\n");
@@ -1262,105 +1527,562 @@ static int elantech_reconnect(struct psmouse *psmouse)
}
/*
+ * Some hw_version 4 models do not work with crc_disabled
+ */
+static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+ {
+ /* Fujitsu H730 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"),
+ },
+ },
+ {
+ /* Fujitsu H760 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK E544 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E544"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK E546 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E546"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK E547 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E547"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK E554 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E554"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK E556 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E556"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK E557 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E557"),
+ },
+ },
+ {
+ /* Fujitsu LIFEBOOK U745 does not work with crc_enabled == 0 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"),
+ },
+ },
+#endif
+ { }
+};
+
+/*
+ * Some hw_version 3 models go into error state when we try to set
+ * bit 3 and/or bit 1 of r10.
+ */
+static const struct dmi_system_id no_hw_res_dmi_table[] = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+ {
+ /* Gigabyte U2442 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "U2442"),
+ },
+ },
+#endif
+ { }
+};
+
+/*
+ * Change Report id 0x5E to 0x5F.
+ */
+static int elantech_change_report_id(struct psmouse *psmouse)
+{
+ /*
+ * NOTE: the code is expecting to receive param[] as an array of 3
+ * items (see __ps2_command()), even if in this case only 2 are
+ * actually needed. Make sure the array size is 3 to avoid potential
+ * stack out-of-bound accesses.
+ */
+ unsigned char param[3] = { 0x10, 0x03 };
+
+ if (elantech_write_reg_params(psmouse, 0x7, param) ||
+ elantech_read_reg_params(psmouse, 0x7, param) ||
+ param[0] != 0x10 || param[1] != 0x03) {
+ psmouse_err(psmouse, "Unable to change report ID to 0x5f.\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+/*
* determine hardware version and set some properties according to it.
*/
-static int elantech_set_properties(struct elantech_data *etd)
+static int elantech_set_properties(struct elantech_device_info *info)
{
/* This represents the version of IC body. */
- int ver = (etd->fw_version & 0x0f0000) >> 16;
+ info->ic_version = (info->fw_version & 0x0f0000) >> 16;
/* Early version of Elan touchpads doesn't obey the rule. */
- if (etd->fw_version < 0x020030 || etd->fw_version == 0x020600)
- etd->hw_version = 1;
+ if (info->fw_version < 0x020030 || info->fw_version == 0x020600)
+ info->hw_version = 1;
else {
- switch (ver) {
+ switch (info->ic_version) {
case 2:
case 4:
- etd->hw_version = 2;
+ info->hw_version = 2;
break;
case 5:
- etd->hw_version = 3;
+ info->hw_version = 3;
break;
- case 6:
- case 7:
- etd->hw_version = 4;
+ case 6 ... 15:
+ info->hw_version = 4;
break;
default:
return -1;
}
}
+ /* Get information pattern for hw_version 4 */
+ info->pattern = 0x00;
+ if (info->ic_version == 0x0f && (info->fw_version & 0xff) <= 0x02)
+ info->pattern = info->fw_version & 0xff;
+
/* decide which send_cmd we're gonna use early */
- etd->send_cmd = etd->hw_version >= 3 ? elantech_send_cmd :
- synaptics_send_cmd;
+ info->send_cmd = info->hw_version >= 3 ? elantech_send_cmd :
+ synaptics_send_cmd;
/* Turn on packet checking by default */
- etd->paritycheck = 1;
+ info->paritycheck = 1;
/*
* This firmware suffers from misreporting coordinates when
* a touch action starts causing the mouse cursor or scrolled page
* to jump. Enable a workaround.
*/
- etd->jumpy_cursor =
- (etd->fw_version == 0x020022 || etd->fw_version == 0x020600);
+ info->jumpy_cursor =
+ (info->fw_version == 0x020022 || info->fw_version == 0x020600);
- if (etd->hw_version > 1) {
+ if (info->hw_version > 1) {
/* For now show extra debug information */
- etd->debug = 1;
+ info->debug = 1;
- if (etd->fw_version >= 0x020800)
- etd->reports_pressure = true;
+ if (info->fw_version >= 0x020800)
+ info->reports_pressure = true;
}
+ /*
+ * The signatures of v3 and v4 packets change depending on the
+ * value of this hardware flag.
+ */
+ info->crc_enabled = (info->fw_version & 0x4000) == 0x4000 ||
+ dmi_check_system(elantech_dmi_force_crc_enabled);
+
+ /* Enable real hardware resolution on hw_version 3 ? */
+ info->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table);
+
return 0;
}
-/*
- * Initialize the touchpad and create sysfs entries
- */
-int elantech_init(struct psmouse *psmouse)
+static int elantech_query_info(struct psmouse *psmouse,
+ struct elantech_device_info *info)
{
- struct elantech_data *etd;
- int i, error;
unsigned char param[3];
+ unsigned char traces;
+ unsigned char ic_body[3];
- psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL);
- if (!etd)
- return -ENOMEM;
-
- psmouse_reset(psmouse);
-
- etd->parity[0] = 1;
- for (i = 1; i < 256; i++)
- etd->parity[i] = etd->parity[i & (i - 1)] ^ 1;
+ memset(info, 0, sizeof(*info));
/*
* Do the version query again so we can store the result
*/
if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) {
psmouse_err(psmouse, "failed to query firmware version.\n");
- goto init_fail;
+ return -EINVAL;
}
- etd->fw_version = (param[0] << 16) | (param[1] << 8) | param[2];
+ info->fw_version = (param[0] << 16) | (param[1] << 8) | param[2];
- if (elantech_set_properties(etd)) {
+ if (elantech_set_properties(info)) {
psmouse_err(psmouse, "unknown hardware version, aborting...\n");
- goto init_fail;
+ return -EINVAL;
}
psmouse_info(psmouse,
"assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n",
- etd->hw_version, param[0], param[1], param[2]);
+ info->hw_version, param[0], param[1], param[2]);
- if (etd->send_cmd(psmouse, ETP_CAPABILITIES_QUERY,
- etd->capabilities)) {
+ if (info->send_cmd(psmouse, ETP_CAPABILITIES_QUERY,
+ info->capabilities)) {
psmouse_err(psmouse, "failed to query capabilities.\n");
- goto init_fail;
+ return -EINVAL;
}
psmouse_info(psmouse,
"Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n",
- etd->capabilities[0], etd->capabilities[1],
- etd->capabilities[2]);
+ info->capabilities[0], info->capabilities[1],
+ info->capabilities[2]);
+
+ if (info->hw_version != 1) {
+ if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, info->samples)) {
+ psmouse_err(psmouse, "failed to query sample data\n");
+ return -EINVAL;
+ }
+ psmouse_info(psmouse,
+ "Elan sample query result %02x, %02x, %02x\n",
+ info->samples[0],
+ info->samples[1],
+ info->samples[2]);
+ }
+
+ if (info->pattern > 0x00 && info->ic_version == 0xf) {
+ if (info->send_cmd(psmouse, ETP_ICBODY_QUERY, ic_body)) {
+ psmouse_err(psmouse, "failed to query ic body\n");
+ return -EINVAL;
+ }
+ info->ic_version = be16_to_cpup((__be16 *)ic_body);
+ psmouse_info(psmouse,
+ "Elan ic body: %#04x, current fw version: %#02x\n",
+ info->ic_version, ic_body[2]);
+ }
+
+ info->product_id = be16_to_cpup((__be16 *)info->samples);
+ if (info->pattern == 0x00)
+ info->product_id &= 0xff;
+
+ if (info->samples[1] == 0x74 && info->hw_version == 0x03) {
+ /*
+ * This module has a bug which makes absolute mode
+ * unusable, so let's abort so we'll be using standard
+ * PS/2 protocol.
+ */
+ psmouse_info(psmouse,
+ "absolute mode broken, forcing standard PS/2 protocol\n");
+ return -ENODEV;
+ }
+
+ /* The MSB indicates the presence of the trackpoint */
+ info->has_trackpoint = (info->capabilities[0] & 0x80) == 0x80;
+
+ if (info->has_trackpoint && info->ic_version == 0x0011 &&
+ (info->product_id == 0x08 || info->product_id == 0x09 ||
+ info->product_id == 0x0d || info->product_id == 0x0e)) {
+ /*
+ * This module has a bug which makes trackpoint in SMBus
+ * mode return invalid data unless trackpoint is switched
+ * from using 0x5e reports to 0x5f. If we are not able to
+ * make the switch, let's abort initialization so we'll be
+ * using standard PS/2 protocol.
+ */
+ if (elantech_change_report_id(psmouse)) {
+ psmouse_info(psmouse,
+ "Trackpoint report is broken, forcing standard PS/2 protocol\n");
+ return -ENODEV;
+ }
+ }
+
+ info->x_res = 31;
+ info->y_res = 31;
+ if (info->hw_version == 4) {
+ if (elantech_get_resolution_v4(psmouse,
+ &info->x_res,
+ &info->y_res,
+ &info->bus)) {
+ psmouse_warn(psmouse,
+ "failed to query resolution data.\n");
+ }
+ }
+
+ /* query range information */
+ switch (info->hw_version) {
+ case 1:
+ info->x_min = ETP_XMIN_V1;
+ info->y_min = ETP_YMIN_V1;
+ info->x_max = ETP_XMAX_V1;
+ info->y_max = ETP_YMAX_V1;
+ break;
+
+ case 2:
+ if (info->fw_version == 0x020800 ||
+ info->fw_version == 0x020b00 ||
+ info->fw_version == 0x020030) {
+ info->x_min = ETP_XMIN_V2;
+ info->y_min = ETP_YMIN_V2;
+ info->x_max = ETP_XMAX_V2;
+ info->y_max = ETP_YMAX_V2;
+ } else {
+ int i;
+ int fixed_dpi;
+
+ i = (info->fw_version > 0x020800 &&
+ info->fw_version < 0x020900) ? 1 : 2;
+
+ if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
+ return -EINVAL;
+
+ fixed_dpi = param[1] & 0x10;
+
+ if (((info->fw_version >> 16) == 0x14) && fixed_dpi) {
+ if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, param))
+ return -EINVAL;
+
+ info->x_max = (info->capabilities[1] - i) * param[1] / 2;
+ info->y_max = (info->capabilities[2] - i) * param[2] / 2;
+ } else if (info->fw_version == 0x040216) {
+ info->x_max = 819;
+ info->y_max = 405;
+ } else if (info->fw_version == 0x040219 || info->fw_version == 0x040215) {
+ info->x_max = 900;
+ info->y_max = 500;
+ } else {
+ info->x_max = (info->capabilities[1] - i) * 64;
+ info->y_max = (info->capabilities[2] - i) * 64;
+ }
+ }
+ break;
+
+ case 3:
+ if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
+ return -EINVAL;
+
+ info->x_max = (0x0f & param[0]) << 8 | param[1];
+ info->y_max = (0xf0 & param[0]) << 4 | param[2];
+ break;
+
+ case 4:
+ if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param))
+ return -EINVAL;
+
+ info->x_max = (0x0f & param[0]) << 8 | param[1];
+ info->y_max = (0xf0 & param[0]) << 4 | param[2];
+ traces = info->capabilities[1];
+ if ((traces < 2) || (traces > info->x_max))
+ return -EINVAL;
+
+ info->width = info->x_max / (traces - 1);
+
+ /* column number of traces */
+ info->x_traces = traces;
+
+ /* row number of traces */
+ traces = info->capabilities[2];
+ if ((traces >= 2) && (traces <= info->y_max))
+ info->y_traces = traces;
+
+ break;
+ }
+
+ /* check for the middle button: DMI matching or new v4 firmwares */
+ info->has_middle_button = dmi_check_system(elantech_dmi_has_middle_button) ||
+ (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version) &&
+ !elantech_is_buttonpad(info));
+
+ return 0;
+}
+
+#if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS)
+
+/*
+ * The newest Elantech device can use a secondary bus (over SMBus) which
+ * provides a better bandwidth and allow a better control of the touchpads.
+ * This is used to decide if we need to use this bus or not.
+ */
+enum {
+ ELANTECH_SMBUS_NOT_SET = -1,
+ ELANTECH_SMBUS_OFF,
+ ELANTECH_SMBUS_ON,
+};
+
+static int elantech_smbus = IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) ?
+ ELANTECH_SMBUS_NOT_SET : ELANTECH_SMBUS_OFF;
+module_param_named(elantech_smbus, elantech_smbus, int, 0644);
+MODULE_PARM_DESC(elantech_smbus, "Use a secondary bus for the Elantech device.");
+
+static const char * const i2c_blacklist_pnp_ids[] = {
+ /*
+ * These are known to not be working properly as bits are missing
+ * in elan_i2c.
+ */
+ NULL
+};
+
+static int elantech_create_smbus(struct psmouse *psmouse,
+ struct elantech_device_info *info,
+ bool leave_breadcrumbs)
+{
+ struct property_entry i2c_props[11] = {};
+ struct i2c_board_info smbus_board = {
+ I2C_BOARD_INFO("elan_i2c", 0x15),
+ .flags = I2C_CLIENT_HOST_NOTIFY,
+ };
+ unsigned int idx = 0;
+
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-size-x",
+ info->x_max + 1);
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-size-y",
+ info->y_max + 1);
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-min-x",
+ info->x_min);
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-min-y",
+ info->y_min);
+ if (info->x_res)
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-x-mm",
+ (info->x_max + 1) / info->x_res);
+ if (info->y_res)
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("touchscreen-y-mm",
+ (info->y_max + 1) / info->y_res);
+
+ if (info->has_trackpoint)
+ i2c_props[idx++] = PROPERTY_ENTRY_BOOL("elan,trackpoint");
+
+ if (info->has_middle_button)
+ i2c_props[idx++] = PROPERTY_ENTRY_BOOL("elan,middle-button");
+
+ if (info->x_traces)
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("elan,x_traces",
+ info->x_traces);
+ if (info->y_traces)
+ i2c_props[idx++] = PROPERTY_ENTRY_U32("elan,y_traces",
+ info->y_traces);
+
+ if (elantech_is_buttonpad(info))
+ i2c_props[idx++] = PROPERTY_ENTRY_BOOL("elan,clickpad");
+
+ smbus_board.fwnode = fwnode_create_software_node(i2c_props, NULL);
+ if (IS_ERR(smbus_board.fwnode))
+ return PTR_ERR(smbus_board.fwnode);
+
+ return psmouse_smbus_init(psmouse, &smbus_board, NULL, 0, false,
+ leave_breadcrumbs);
+}
+
+/*
+ * elantech_setup_smbus - called once the PS/2 devices are enumerated
+ * and decides to instantiate a SMBus InterTouch device.
+ */
+static int elantech_setup_smbus(struct psmouse *psmouse,
+ struct elantech_device_info *info,
+ bool leave_breadcrumbs)
+{
+ int error;
+
+ if (elantech_smbus == ELANTECH_SMBUS_OFF)
+ return -ENXIO;
+
+ if (elantech_smbus == ELANTECH_SMBUS_NOT_SET) {
+ /*
+ * New ICs are enabled by default, unless mentioned in
+ * i2c_blacklist_pnp_ids.
+ * Old ICs are up to the user to decide.
+ */
+ if (!ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version) ||
+ psmouse_matches_pnp_id(psmouse, i2c_blacklist_pnp_ids))
+ return -ENXIO;
+ }
+
+ psmouse_info(psmouse, "Trying to set up SMBus access\n");
+
+ error = elantech_create_smbus(psmouse, info, leave_breadcrumbs);
+ if (error) {
+ if (error == -EAGAIN)
+ psmouse_info(psmouse, "SMbus companion is not ready yet\n");
+ else
+ psmouse_err(psmouse, "unable to create intertouch device\n");
+
+ return error;
+ }
+
+ return 0;
+}
+
+static bool elantech_use_host_notify(struct psmouse *psmouse,
+ struct elantech_device_info *info)
+{
+ if (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version))
+ return true;
+
+ switch (info->bus) {
+ case ETP_BUS_PS2_ONLY:
+ /* expected case */
+ break;
+ case ETP_BUS_SMB_ALERT_ONLY:
+ case ETP_BUS_PS2_SMB_ALERT:
+ psmouse_dbg(psmouse, "Ignoring SMBus provider through alert protocol.\n");
+ break;
+ case ETP_BUS_SMB_HST_NTFY_ONLY:
+ case ETP_BUS_PS2_SMB_HST_NTFY:
+ return true;
+ default:
+ psmouse_dbg(psmouse,
+ "Ignoring SMBus bus provider %d.\n",
+ info->bus);
+ }
+
+ return false;
+}
+
+int elantech_init_smbus(struct psmouse *psmouse)
+{
+ struct elantech_device_info info;
+ int error;
+
+ psmouse_reset(psmouse);
+
+ error = elantech_query_info(psmouse, &info);
+ if (error)
+ goto init_fail;
+
+ if (info.hw_version < 4) {
+ error = -ENXIO;
+ goto init_fail;
+ }
+
+ return elantech_create_smbus(psmouse, &info, false);
+ init_fail:
+ psmouse_reset(psmouse);
+ return error;
+}
+#endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */
+
+/*
+ * Initialize the touchpad and create sysfs entries
+ */
+static int elantech_setup_ps2(struct psmouse *psmouse,
+ struct elantech_device_info *info)
+{
+ struct elantech_data *etd;
+ int i;
+ int error = -EINVAL;
+ struct input_dev *tp_dev;
+
+ psmouse->private = etd = kzalloc(sizeof(*etd), GFP_KERNEL);
+ if (!etd)
+ return -ENOMEM;
+
+ etd->info = *info;
+
+ etd->parity[0] = 1;
+ for (i = 1; i < 256; i++)
+ etd->parity[i] = etd->parity[i & (i - 1)] ^ 1;
if (elantech_set_absolute_mode(psmouse)) {
psmouse_err(psmouse,
@@ -1368,6 +2090,11 @@ int elantech_init(struct psmouse *psmouse)
goto init_fail;
}
+ if (info->fw_version == 0x381f17) {
+ etd->original_set_rate = psmouse->set_rate;
+ psmouse->set_rate = elantech_set_rate_restore_reg_07;
+ }
+
if (elantech_set_input_params(psmouse)) {
psmouse_err(psmouse, "failed to query touchpad range.\n");
goto init_fail;
@@ -1382,14 +2109,116 @@ int elantech_init(struct psmouse *psmouse)
goto init_fail;
}
+ if (info->has_trackpoint) {
+ tp_dev = input_allocate_device();
+
+ if (!tp_dev) {
+ error = -ENOMEM;
+ goto init_fail_tp_alloc;
+ }
+
+ etd->tp_dev = tp_dev;
+ snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1",
+ psmouse->ps2dev.serio->phys);
+ tp_dev->phys = etd->tp_phys;
+ tp_dev->name = "ETPS/2 Elantech TrackPoint";
+ tp_dev->id.bustype = BUS_I8042;
+ tp_dev->id.vendor = 0x0002;
+ tp_dev->id.product = PSMOUSE_ELANTECH;
+ tp_dev->id.version = 0x0000;
+ tp_dev->dev.parent = &psmouse->ps2dev.serio->dev;
+ tp_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+ tp_dev->relbit[BIT_WORD(REL_X)] =
+ BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+ tp_dev->keybit[BIT_WORD(BTN_LEFT)] =
+ BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) |
+ BIT_MASK(BTN_RIGHT);
+
+ __set_bit(INPUT_PROP_POINTER, tp_dev->propbit);
+ __set_bit(INPUT_PROP_POINTING_STICK, tp_dev->propbit);
+
+ error = input_register_device(etd->tp_dev);
+ if (error < 0)
+ goto init_fail_tp_reg;
+ }
+
psmouse->protocol_handler = elantech_process_byte;
psmouse->disconnect = elantech_disconnect;
psmouse->reconnect = elantech_reconnect;
- psmouse->pktsize = etd->hw_version > 1 ? 6 : 4;
+ psmouse->fast_reconnect = NULL;
+ psmouse->pktsize = info->hw_version > 1 ? 6 : 4;
return 0;
-
+ init_fail_tp_reg:
+ input_free_device(tp_dev);
+ init_fail_tp_alloc:
+ sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
+ &elantech_attr_group);
init_fail:
kfree(etd);
- return -1;
+ return error;
+}
+
+int elantech_init_ps2(struct psmouse *psmouse)
+{
+ struct elantech_device_info info;
+ int error;
+
+ psmouse_reset(psmouse);
+
+ error = elantech_query_info(psmouse, &info);
+ if (error)
+ goto init_fail;
+
+ error = elantech_setup_ps2(psmouse, &info);
+ if (error)
+ goto init_fail;
+
+ return 0;
+ init_fail:
+ psmouse_reset(psmouse);
+ return error;
+}
+
+int elantech_init(struct psmouse *psmouse)
+{
+ struct elantech_device_info info;
+ int error;
+
+ psmouse_reset(psmouse);
+
+ error = elantech_query_info(psmouse, &info);
+ if (error)
+ goto init_fail;
+
+#if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS)
+
+ if (elantech_use_host_notify(psmouse, &info)) {
+ if (!IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) ||
+ !IS_ENABLED(CONFIG_MOUSE_PS2_ELANTECH_SMBUS)) {
+ psmouse_warn(psmouse,
+ "The touchpad can support a better bus than the too old PS/2 protocol. "
+ "Make sure MOUSE_PS2_ELANTECH_SMBUS and MOUSE_ELAN_I2C_SMBUS are enabled to get a better touchpad experience.\n");
+ }
+ error = elantech_setup_smbus(psmouse, &info, true);
+ if (!error)
+ return PSMOUSE_ELANTECH_SMBUS;
+ }
+
+#endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */
+
+ error = elantech_setup_ps2(psmouse, &info);
+ if (error < 0) {
+ /*
+ * Not using any flavor of Elantech support, so clean up
+ * SMbus breadcrumbs, if any.
+ */
+ psmouse_smbus_cleanup(psmouse);
+ goto init_fail;
+ }
+
+ return PSMOUSE_ELANTECH;
+ init_fail:
+ psmouse_reset(psmouse);
+ return error;
}
generated by cgit (git 2.34.1) at 2025-12-25 07:39:20 +0000