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-rw-r--r--drivers/input/mouse/synaptics.c700
1 files changed, 700 insertions, 0 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
new file mode 100644
index 0000000..69832f8
--- /dev/null
+++ b/drivers/input/mouse/synaptics.c
@@ -0,0 +1,700 @@
+/*
+ * Synaptics TouchPad PS/2 mouse driver
+ *
+ * 2003 Dmitry Torokhov <dtor@mail.ru>
+ * Added support for pass-through port. Special thanks to Peter Berg Larsen
+ * for explaining various Synaptics quirks.
+ *
+ * 2003 Peter Osterlund <petero2@telia.com>
+ * Ported to 2.5 input device infrastructure.
+ *
+ * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
+ * start merging tpconfig and gpm code to a xfree-input module
+ * adding some changes and extensions (ex. 3rd and 4th button)
+ *
+ * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
+ * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
+ * code for the special synaptics commands (from the tpconfig-source)
+ *
+ * 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/module.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/libps2.h>
+#include "psmouse.h"
+#include "synaptics.h"
+
+/*
+ * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
+ * section 2.3.2, which says that they should be valid regardless of the
+ * actual size of the sensor.
+ */
+#define XMIN_NOMINAL 1472
+#define XMAX_NOMINAL 5472
+#define YMIN_NOMINAL 1408
+#define YMAX_NOMINAL 4448
+
+/*****************************************************************************
+ * Synaptics communications functions
+ ****************************************************************************/
+
+/*
+ * Send a command to the synpatics touchpad by special commands
+ */
+static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
+{
+ if (psmouse_sliced_command(psmouse, c))
+ return -1;
+ if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
+ return -1;
+ return 0;
+}
+
+/*
+ * Set the synaptics touchpad mode byte by special commands
+ */
+static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
+{
+ unsigned char param[1];
+
+ if (psmouse_sliced_command(psmouse, mode))
+ return -1;
+ param[0] = SYN_PS_SET_MODE2;
+ if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
+ return -1;
+ return 0;
+}
+
+/*
+ * Read the model-id bytes from the touchpad
+ * see also SYN_MODEL_* macros
+ */
+static int synaptics_model_id(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv = psmouse->private;
+ unsigned char mi[3];
+
+ if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
+ return -1;
+ priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
+ return 0;
+}
+
+/*
+ * Read the capability-bits from the touchpad
+ * see also the SYN_CAP_* macros
+ */
+static int synaptics_capability(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv = psmouse->private;
+ unsigned char cap[3];
+
+ if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
+ return -1;
+ priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
+ priv->ext_cap = 0;
+ if (!SYN_CAP_VALID(priv->capabilities))
+ return -1;
+
+ /*
+ * Unless capExtended is set the rest of the flags should be ignored
+ */
+ if (!SYN_CAP_EXTENDED(priv->capabilities))
+ priv->capabilities = 0;
+
+ if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
+ if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
+ printk(KERN_ERR "Synaptics claims to have extended capabilities,"
+ " but I'm not able to read them.");
+ } else {
+ priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
+
+ /*
+ * if nExtBtn is greater than 8 it should be considered
+ * invalid and treated as 0
+ */
+ if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
+ priv->ext_cap &= 0xff0fff;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Identify Touchpad
+ * See also the SYN_ID_* macros
+ */
+static int synaptics_identify(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv = psmouse->private;
+ unsigned char id[3];
+
+ if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
+ return -1;
+ priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
+ if (SYN_ID_IS_SYNAPTICS(priv->identity))
+ return 0;
+ return -1;
+}
+
+static void print_ident(struct synaptics_data *priv)
+{
+ printk(KERN_INFO "Synaptics Touchpad, model: %ld\n", SYN_ID_MODEL(priv->identity));
+ printk(KERN_INFO " Firmware: %ld.%ld\n", SYN_ID_MAJOR(priv->identity),
+ SYN_ID_MINOR(priv->identity));
+ if (SYN_MODEL_ROT180(priv->model_id))
+ printk(KERN_INFO " 180 degree mounted touchpad\n");
+ if (SYN_MODEL_PORTRAIT(priv->model_id))
+ printk(KERN_INFO " portrait touchpad\n");
+ printk(KERN_INFO " Sensor: %ld\n", SYN_MODEL_SENSOR(priv->model_id));
+ if (SYN_MODEL_NEWABS(priv->model_id))
+ printk(KERN_INFO " new absolute packet format\n");
+ if (SYN_MODEL_PEN(priv->model_id))
+ printk(KERN_INFO " pen detection\n");
+
+ if (SYN_CAP_EXTENDED(priv->capabilities)) {
+ printk(KERN_INFO " Touchpad has extended capability bits\n");
+ if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap))
+ printk(KERN_INFO " -> %d multi-buttons, i.e. besides standard buttons\n",
+ (int)(SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap)));
+ if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
+ printk(KERN_INFO " -> middle button\n");
+ if (SYN_CAP_FOUR_BUTTON(priv->capabilities))
+ printk(KERN_INFO " -> four buttons\n");
+ if (SYN_CAP_MULTIFINGER(priv->capabilities))
+ printk(KERN_INFO " -> multifinger detection\n");
+ if (SYN_CAP_PALMDETECT(priv->capabilities))
+ printk(KERN_INFO " -> palm detection\n");
+ if (SYN_CAP_PASS_THROUGH(priv->capabilities))
+ printk(KERN_INFO " -> pass-through port\n");
+ }
+}
+
+static int synaptics_query_hardware(struct psmouse *psmouse)
+{
+ int retries = 0;
+
+ while ((retries++ < 3) && psmouse_reset(psmouse))
+ printk(KERN_ERR "synaptics reset failed\n");
+
+ if (synaptics_identify(psmouse))
+ return -1;
+ if (synaptics_model_id(psmouse))
+ return -1;
+ if (synaptics_capability(psmouse))
+ return -1;
+
+ return 0;
+}
+
+static int synaptics_set_absolute_mode(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv = psmouse->private;
+
+ priv->mode = SYN_BIT_ABSOLUTE_MODE;
+ if (SYN_ID_MAJOR(priv->identity) >= 4)
+ priv->mode |= SYN_BIT_DISABLE_GESTURE;
+ if (SYN_CAP_EXTENDED(priv->capabilities))
+ priv->mode |= SYN_BIT_W_MODE;
+
+ if (synaptics_mode_cmd(psmouse, priv->mode))
+ return -1;
+
+ return 0;
+}
+
+static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
+{
+ struct synaptics_data *priv = psmouse->private;
+
+ if (rate >= 80) {
+ priv->mode |= SYN_BIT_HIGH_RATE;
+ psmouse->rate = 80;
+ } else {
+ priv->mode &= ~SYN_BIT_HIGH_RATE;
+ psmouse->rate = 40;
+ }
+
+ synaptics_mode_cmd(psmouse, priv->mode);
+}
+
+/*****************************************************************************
+ * Synaptics pass-through PS/2 port support
+ ****************************************************************************/
+static int synaptics_pt_write(struct serio *serio, unsigned char c)
+{
+ struct psmouse *parent = serio_get_drvdata(serio->parent);
+ char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
+
+ if (psmouse_sliced_command(parent, c))
+ return -1;
+ if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
+ return -1;
+ return 0;
+}
+
+static inline int synaptics_is_pt_packet(unsigned char *buf)
+{
+ return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
+}
+
+static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
+{
+ struct psmouse *child = serio_get_drvdata(ptport);
+
+ if (child && child->state == PSMOUSE_ACTIVATED) {
+ serio_interrupt(ptport, packet[1], 0, NULL);
+ serio_interrupt(ptport, packet[4], 0, NULL);
+ serio_interrupt(ptport, packet[5], 0, NULL);
+ if (child->type >= PSMOUSE_GENPS)
+ serio_interrupt(ptport, packet[2], 0, NULL);
+ } else
+ serio_interrupt(ptport, packet[1], 0, NULL);
+}
+
+static void synaptics_pt_activate(struct psmouse *psmouse)
+{
+ struct serio *ptport = psmouse->ps2dev.serio->child;
+ struct psmouse *child = serio_get_drvdata(ptport);
+ struct synaptics_data *priv = psmouse->private;
+
+ /* adjust the touchpad to child's choice of protocol */
+ if (child) {
+ if (child->type >= PSMOUSE_GENPS)
+ priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
+ else
+ priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
+
+ if (synaptics_mode_cmd(psmouse, priv->mode))
+ printk(KERN_INFO "synaptics: failed to switch guest protocol\n");
+ }
+}
+
+static void synaptics_pt_create(struct psmouse *psmouse)
+{
+ struct serio *serio;
+
+ serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+ if (!serio) {
+ printk(KERN_ERR "synaptics: not enough memory to allocate pass-through port\n");
+ return;
+ }
+
+ memset(serio, 0, sizeof(struct serio));
+
+ serio->id.type = SERIO_PS_PSTHRU;
+ strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
+ strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
+ serio->write = synaptics_pt_write;
+ serio->parent = psmouse->ps2dev.serio;
+
+ psmouse->pt_activate = synaptics_pt_activate;
+
+ printk(KERN_INFO "serio: %s port at %s\n", serio->name, psmouse->phys);
+ serio_register_port(serio);
+}
+
+/*****************************************************************************
+ * Functions to interpret the absolute mode packets
+ ****************************************************************************/
+
+static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
+{
+ memset(hw, 0, sizeof(struct synaptics_hw_state));
+
+ if (SYN_MODEL_NEWABS(priv->model_id)) {
+ hw->x = (((buf[3] & 0x10) << 8) |
+ ((buf[1] & 0x0f) << 8) |
+ buf[4]);
+ hw->y = (((buf[3] & 0x20) << 7) |
+ ((buf[1] & 0xf0) << 4) |
+ buf[5]);
+
+ hw->z = buf[2];
+ hw->w = (((buf[0] & 0x30) >> 2) |
+ ((buf[0] & 0x04) >> 1) |
+ ((buf[3] & 0x04) >> 2));
+
+ hw->left = (buf[0] & 0x01) ? 1 : 0;
+ hw->right = (buf[0] & 0x02) ? 1 : 0;
+
+ if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
+ hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
+ if (hw->w == 2)
+ hw->scroll = (signed char)(buf[1]);
+ }
+
+ if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
+ hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
+ hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
+ }
+
+ if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
+ ((buf[0] ^ buf[3]) & 0x02)) {
+ switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
+ default:
+ /*
+ * if nExtBtn is greater than 8 it should be
+ * considered invalid and treated as 0
+ */
+ break;
+ case 8:
+ hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
+ hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
+ case 6:
+ hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
+ hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
+ case 4:
+ hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
+ hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
+ case 2:
+ hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
+ hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
+ }
+ }
+ } else {
+ hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
+ hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
+
+ hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
+ hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
+
+ hw->left = (buf[0] & 0x01) ? 1 : 0;
+ hw->right = (buf[0] & 0x02) ? 1 : 0;
+ }
+}
+
+/*
+ * called for each full received packet from the touchpad
+ */
+static void synaptics_process_packet(struct psmouse *psmouse)
+{
+ struct input_dev *dev = &psmouse->dev;
+ struct synaptics_data *priv = psmouse->private;
+ struct synaptics_hw_state hw;
+ int num_fingers;
+ int finger_width;
+ int i;
+
+ synaptics_parse_hw_state(psmouse->packet, priv, &hw);
+
+ if (hw.scroll) {
+ priv->scroll += hw.scroll;
+
+ while (priv->scroll >= 4) {
+ input_report_key(dev, BTN_BACK, !hw.down);
+ input_sync(dev);
+ input_report_key(dev, BTN_BACK, hw.down);
+ input_sync(dev);
+ priv->scroll -= 4;
+ }
+ while (priv->scroll <= -4) {
+ input_report_key(dev, BTN_FORWARD, !hw.up);
+ input_sync(dev);
+ input_report_key(dev, BTN_FORWARD, hw.up);
+ input_sync(dev);
+ priv->scroll += 4;
+ }
+ return;
+ }
+
+ if (hw.z > 0) {
+ num_fingers = 1;
+ finger_width = 5;
+ if (SYN_CAP_EXTENDED(priv->capabilities)) {
+ switch (hw.w) {
+ case 0 ... 1:
+ if (SYN_CAP_MULTIFINGER(priv->capabilities))
+ num_fingers = hw.w + 2;
+ break;
+ case 2:
+ if (SYN_MODEL_PEN(priv->model_id))
+ ; /* Nothing, treat a pen as a single finger */
+ break;
+ case 4 ... 15:
+ if (SYN_CAP_PALMDETECT(priv->capabilities))
+ finger_width = hw.w;
+ break;
+ }
+ }
+ } else {
+ num_fingers = 0;
+ finger_width = 0;
+ }
+
+ /* Post events
+ * BTN_TOUCH has to be first as mousedev relies on it when doing
+ * absolute -> relative conversion
+ */
+ if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
+ if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
+
+ if (hw.z > 0) {
+ input_report_abs(dev, ABS_X, hw.x);
+ input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
+ }
+ input_report_abs(dev, ABS_PRESSURE, hw.z);
+
+ input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
+ input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
+ input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
+ input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
+
+ input_report_key(dev, BTN_LEFT, hw.left);
+ input_report_key(dev, BTN_RIGHT, hw.right);
+
+ if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
+ input_report_key(dev, BTN_MIDDLE, hw.middle);
+
+ if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
+ input_report_key(dev, BTN_FORWARD, hw.up);
+ input_report_key(dev, BTN_BACK, hw.down);
+ }
+
+ for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
+ input_report_key(dev, BTN_0 + i, hw.ext_buttons & (1 << i));
+
+ input_sync(dev);
+}
+
+static int synaptics_validate_byte(unsigned char packet[], int idx, unsigned char pkt_type)
+{
+ static unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
+ static unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
+ static unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
+ static unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
+ static unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
+
+ if (idx < 0 || idx > 4)
+ return 0;
+
+ switch (pkt_type) {
+ case SYN_NEWABS:
+ case SYN_NEWABS_RELAXED:
+ return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
+
+ case SYN_NEWABS_STRICT:
+ return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
+
+ case SYN_OLDABS:
+ return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
+
+ default:
+ printk(KERN_ERR "synaptics: unknown packet type %d\n", pkt_type);
+ return 0;
+ }
+}
+
+static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
+{
+ int i;
+
+ for (i = 0; i < 5; i++)
+ if (!synaptics_validate_byte(psmouse->packet, i, SYN_NEWABS_STRICT)) {
+ printk(KERN_INFO "synaptics: using relaxed packet validation\n");
+ return SYN_NEWABS_RELAXED;
+ }
+
+ return SYN_NEWABS_STRICT;
+}
+
+static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
+{
+ struct input_dev *dev = &psmouse->dev;
+ struct synaptics_data *priv = psmouse->private;
+
+ input_regs(dev, regs);
+
+ if (psmouse->pktcnt >= 6) { /* Full packet received */
+ if (unlikely(priv->pkt_type == SYN_NEWABS))
+ priv->pkt_type = synaptics_detect_pkt_type(psmouse);
+
+ if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) {
+ if (psmouse->ps2dev.serio->child)
+ synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet);
+ } else
+ synaptics_process_packet(psmouse);
+
+ return PSMOUSE_FULL_PACKET;
+ }
+
+ return synaptics_validate_byte(psmouse->packet, psmouse->pktcnt - 1, priv->pkt_type) ?
+ PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
+}
+
+/*****************************************************************************
+ * Driver initialization/cleanup functions
+ ****************************************************************************/
+static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
+{
+ int i;
+
+ set_bit(EV_ABS, dev->evbit);
+ input_set_abs_params(dev, ABS_X, XMIN_NOMINAL, XMAX_NOMINAL, 0, 0);
+ input_set_abs_params(dev, ABS_Y, YMIN_NOMINAL, YMAX_NOMINAL, 0, 0);
+ input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
+ set_bit(ABS_TOOL_WIDTH, dev->absbit);
+
+ set_bit(EV_KEY, dev->evbit);
+ set_bit(BTN_TOUCH, dev->keybit);
+ set_bit(BTN_TOOL_FINGER, dev->keybit);
+ set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
+ set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
+
+ set_bit(BTN_LEFT, dev->keybit);
+ set_bit(BTN_RIGHT, dev->keybit);
+
+ if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
+ set_bit(BTN_MIDDLE, dev->keybit);
+
+ if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
+ SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
+ set_bit(BTN_FORWARD, dev->keybit);
+ set_bit(BTN_BACK, dev->keybit);
+ }
+
+ for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
+ set_bit(BTN_0 + i, dev->keybit);
+
+ clear_bit(EV_REL, dev->evbit);
+ clear_bit(REL_X, dev->relbit);
+ clear_bit(REL_Y, dev->relbit);
+}
+
+void synaptics_reset(struct psmouse *psmouse)
+{
+ /* reset touchpad back to relative mode, gestures enabled */
+ synaptics_mode_cmd(psmouse, 0);
+}
+
+static void synaptics_disconnect(struct psmouse *psmouse)
+{
+ synaptics_reset(psmouse);
+ kfree(psmouse->private);
+ psmouse->private = NULL;
+}
+
+static int synaptics_reconnect(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv = psmouse->private;
+ struct synaptics_data old_priv = *priv;
+
+ if (synaptics_detect(psmouse, 0))
+ return -1;
+
+ if (synaptics_query_hardware(psmouse)) {
+ printk(KERN_ERR "Unable to query Synaptics hardware.\n");
+ return -1;
+ }
+
+ if (old_priv.identity != priv->identity ||
+ old_priv.model_id != priv->model_id ||
+ old_priv.capabilities != priv->capabilities ||
+ old_priv.ext_cap != priv->ext_cap)
+ return -1;
+
+ if (synaptics_set_absolute_mode(psmouse)) {
+ printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int synaptics_detect(struct psmouse *psmouse, int set_properties)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char param[4];
+
+ param[0] = 0;
+
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+ ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+ ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
+
+ if (param[1] != 0x47)
+ return -1;
+
+ if (set_properties) {
+ psmouse->vendor = "Synaptics";
+ psmouse->name = "TouchPad";
+ }
+
+ return 0;
+}
+
+#if defined(__i386__)
+#include <linux/dmi.h>
+static struct dmi_system_id toshiba_dmi_table[] = {
+ {
+ .ident = "Toshiba Satellite",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME , "Satellite"),
+ },
+ },
+ { }
+};
+#endif
+
+int synaptics_init(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv;
+
+ psmouse->private = priv = kmalloc(sizeof(struct synaptics_data), GFP_KERNEL);
+ if (!priv)
+ return -1;
+ memset(priv, 0, sizeof(struct synaptics_data));
+
+ if (synaptics_query_hardware(psmouse)) {
+ printk(KERN_ERR "Unable to query Synaptics hardware.\n");
+ goto init_fail;
+ }
+
+ if (synaptics_set_absolute_mode(psmouse)) {
+ printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
+ goto init_fail;
+ }
+
+ priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
+
+ print_ident(priv);
+ set_input_params(&psmouse->dev, priv);
+
+ psmouse->protocol_handler = synaptics_process_byte;
+ psmouse->set_rate = synaptics_set_rate;
+ psmouse->disconnect = synaptics_disconnect;
+ psmouse->reconnect = synaptics_reconnect;
+ psmouse->pktsize = 6;
+
+ if (SYN_CAP_PASS_THROUGH(priv->capabilities))
+ synaptics_pt_create(psmouse);
+
+#if defined(__i386__)
+ /*
+ * Toshiba's KBC seems to have trouble handling data from
+ * Synaptics as full rate, switch to lower rate which is roughly
+ * thye same as rate of standard PS/2 mouse.
+ */
+ if (psmouse->rate >= 80 && dmi_check_system(toshiba_dmi_table)) {
+ printk(KERN_INFO "synaptics: Toshiba Satellite detected, limiting rate to 40pps.\n");
+ psmouse->rate = 40;
+ }
+#endif
+
+ return 0;
+
+ init_fail:
+ kfree(priv);
+ return -1;
+}
+
+