/* * Synaptics TouchPad PS/2 mouse driver * * 2003 Dmitry Torokhov * Added support for pass-through port. Special thanks to Peter Berg Larsen * for explaining various Synaptics quirks. * * 2003 Peter Osterlund * Ported to 2.5 input device infrastructure. * * Copyright (C) 2001 Stefan Gmeiner * 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 * Copyright (c) 1998-2000 Bruce Kalk * 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 #include #include #include #include #include #include #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. * Note that newer firmware allows querying device for maximum useable * coordinates. */ #define XMIN 0 #define XMAX 6143 #define YMIN 0 #define YMAX 6143 #define XMIN_NOMINAL 1472 #define XMAX_NOMINAL 5472 #define YMIN_NOMINAL 1408 #define YMAX_NOMINAL 4448 /* Size in bits of absolute position values reported by the hardware */ #define ABS_POS_BITS 13 /* * These values should represent the absolute maximum value that will * be reported for a positive position value. Some Synaptics firmware * uses this value to indicate a finger near the edge of the touchpad * whose precise position cannot be determined. * * At least one touchpad is known to report positions in excess of this * value which are actually negative values truncated to the 13-bit * reporting range. These values have never been observed to be lower * than 8184 (i.e. -8), so we treat all values greater than 8176 as * negative and any other value as positive. */ #define X_MAX_POSITIVE 8176 #define Y_MAX_POSITIVE 8176 /***************************************************************************** * Stuff we need even when we do not want native Synaptics support ****************************************************************************/ /* * 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; } int synaptics_detect(struct psmouse *psmouse, bool 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 -ENODEV; if (set_properties) { psmouse->vendor = "Synaptics"; psmouse->name = "TouchPad"; } return 0; } void synaptics_reset(struct psmouse *psmouse) { /* reset touchpad back to relative mode, gestures enabled */ synaptics_mode_cmd(psmouse, 0); } #ifdef CONFIG_MOUSE_PS2_SYNAPTICS /* This list has been kindly provided by Synaptics. */ static const char * const topbuttonpad_pnp_ids[] = { "LEN0017", "LEN0018", "LEN0019", "LEN0023", "LEN002A", "LEN002B", "LEN002C", "LEN002D", "LEN002E", "LEN0033", /* Helix */ "LEN0034", /* T431s, T540, X1 Carbon 2nd */ "LEN0035", /* X240 */ "LEN0036", /* T440 */ "LEN0037", "LEN0038", "LEN0041", "LEN0042", /* Yoga */ "LEN0045", "LEN0046", "LEN0047", "LEN0048", "LEN0049", "LEN2000", "LEN2001", "LEN2002", "LEN2003", "LEN2004", /* L440 */ "LEN2005", "LEN2006", "LEN2007", "LEN2008", "LEN2009", "LEN200A", "LEN200B", NULL }; /***************************************************************************** * Synaptics communications functions ****************************************************************************/ /* * Synaptics touchpads report the y coordinate from bottom to top, which is * opposite from what userspace expects. * This function is used to invert y before reporting. */ static int synaptics_invert_y(int y) { return YMAX_NOMINAL + YMIN_NOMINAL - y; } /* * 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; } /* * 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 board id from the touchpad * The board id is encoded in the "QUERY MODES" response */ static int synaptics_board_id(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; unsigned char bid[3]; if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid)) return -1; priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; return 0; } /* * Read the firmware id from the touchpad */ static int synaptics_firmware_id(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; unsigned char fwid[3]; if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid)) return -1; priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[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 = priv->ext_cap_0c = 0; /* * Older firmwares had submodel ID fixed to 0x47 */ if (SYN_ID_FULL(priv->identity) < 0x705 && SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) { 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)) { psmouse_warn(psmouse, "device claims to have extended capabilities, but I'm not able to read them.\n"); } 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; } } if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) { if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) { psmouse_warn(psmouse, "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); } else { priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2]; } } 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; } /* * Read touchpad resolution and maximum reported coordinates * Resolution is left zero if touchpad does not support the query */ static const int *quirk_min_max; static int synaptics_resolution(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; unsigned char resp[3]; if (quirk_min_max) { priv->x_min = quirk_min_max[0]; priv->x_max = quirk_min_max[1]; priv->y_min = quirk_min_max[2]; priv->y_max = quirk_min_max[3]; return 0; } if (SYN_ID_MAJOR(priv->identity) < 4) return 0; if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) { if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { priv->x_res = resp[0]; /* x resolution in units/mm */ priv->y_res = resp[2]; /* y resolution in units/mm */ } } if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 && SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) { if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) { psmouse_warn(psmouse, "device claims to have max coordinates query, but I'm not able to read it.\n"); } else { priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); } } if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 && SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) { if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) { psmouse_warn(psmouse, "device claims to have min coordinates query, but I'm not able to read it.\n"); } else { priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); } } return 0; } static int synaptics_query_hardware(struct psmouse *psmouse) { if (synaptics_identify(psmouse)) return -1; if (synaptics_model_id(psmouse)) return -1; if (synaptics_firmware_id(psmouse)) return -1; if (synaptics_board_id(psmouse)) return -1; if (synaptics_capability(psmouse)) return -1; if (synaptics_resolution(psmouse)) return -1; return 0; } static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) { static unsigned char param = 0xc8; struct synaptics_data *priv = psmouse->private; if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) return 0; if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) return -1; if (ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE)) return -1; /* Advanced gesture mode also sends multi finger data */ priv->capabilities |= BIT(1); return 0; } static int synaptics_set_mode(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; priv->mode = 0; if (priv->absolute_mode) priv->mode |= SYN_BIT_ABSOLUTE_MODE; if (priv->disable_gesture) priv->mode |= SYN_BIT_DISABLE_GESTURE; if (psmouse->rate >= 80) priv->mode |= SYN_BIT_HIGH_RATE; if (SYN_CAP_EXTENDED(priv->capabilities)) priv->mode |= SYN_BIT_W_MODE; if (synaptics_mode_cmd(psmouse, priv->mode)) return -1; if (priv->absolute_mode && synaptics_set_advanced_gesture_mode(psmouse)) { psmouse_err(psmouse, "Advanced gesture mode init failed.\n"); 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 int synaptics_pt_start(struct serio *serio) { struct psmouse *parent = serio_get_drvdata(serio->parent); struct synaptics_data *priv = parent->private; serio_pause_rx(parent->ps2dev.serio); priv->pt_port = serio; serio_continue_rx(parent->ps2dev.serio); return 0; } static void synaptics_pt_stop(struct serio *serio) { struct psmouse *parent = serio_get_drvdata(serio->parent); struct synaptics_data *priv = parent->private; serio_pause_rx(parent->ps2dev.serio); priv->pt_port = NULL; serio_continue_rx(parent->ps2dev.serio); } static 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); serio_interrupt(ptport, packet[4], 0); serio_interrupt(ptport, packet[5], 0); if (child->pktsize == 4) serio_interrupt(ptport, packet[2], 0); } else serio_interrupt(ptport, packet[1], 0); } static void synaptics_pt_activate(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; struct psmouse *child = serio_get_drvdata(priv->pt_port); /* adjust the touchpad to child's choice of protocol */ if (child) { if (child->pktsize == 4) priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; else priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; if (synaptics_mode_cmd(psmouse, priv->mode)) psmouse_warn(psmouse, "failed to switch guest protocol\n"); } } static void synaptics_pt_create(struct psmouse *psmouse) { struct serio *serio; serio = kzalloc(sizeof(struct serio), GFP_KERNEL); if (!serio) { psmouse_err(psmouse, "not enough memory for pass-through port\n"); return; } 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->start = synaptics_pt_start; serio->stop = synaptics_pt_stop; serio->parent = psmouse->ps2dev.serio; psmouse->pt_activate = synaptics_pt_activate; psmouse_info(psmouse, "serio: %s port at %s\n", serio->name, psmouse->phys); serio_register_port(serio); } /***************************************************************************** * Functions to interpret the absolute mode packets ****************************************************************************/ static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, int sgm, int agm) { state->count = count; state->sgm = sgm; state->agm = agm; } static void synaptics_parse_agm(const unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) { struct synaptics_hw_state *agm = &priv->agm; int agm_packet_type; agm_packet_type = (buf[5] & 0x30) >> 4; switch (agm_packet_type) { case 1: /* Gesture packet: (x, y, z) half resolution */ agm->w = hw->w; agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; break; case 2: /* AGM-CONTACT packet: (count, sgm, agm) */ synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); break; default: break; } /* Record that at least one AGM has been received since last SGM */ priv->agm_pending = true; } static int synaptics_parse_hw_state(const 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->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_CLICKPAD(priv->ext_cap_0c)) { /* * Clickpad's button is transmitted as middle button, * however, since it is primary button, we will report * it as BTN_LEFT. */ hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; } else 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_ADV_GESTURE(priv->ext_cap_0c) || SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && hw->w == 2) { synaptics_parse_agm(buf, priv, hw); return 1; } 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]; 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; } /* * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE * is used by some firmware to indicate a finger at the edge of * the touchpad whose precise position cannot be determined, so * convert these values to the maximum axis value. */ if (hw->x > X_MAX_POSITIVE) hw->x -= 1 << ABS_POS_BITS; else if (hw->x == X_MAX_POSITIVE) hw->x = XMAX; if (hw->y > Y_MAX_POSITIVE) hw->y -= 1 << ABS_POS_BITS; else if (hw->y == Y_MAX_POSITIVE) hw->y = YMAX; return 0; } static void synaptics_report_semi_mt_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, synaptics_invert_y(y)); } } static void synaptics_report_semi_mt_data(struct input_dev *dev, const struct synaptics_hw_state *a, const struct synaptics_hw_state *b, int num_fingers) { if (num_fingers >= 2) { synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), min(a->y, b->y)); synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), max(a->y, b->y)); } else if (num_fingers == 1) { synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); } else { synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); } } static void synaptics_report_buttons(struct psmouse *psmouse, const struct synaptics_hw_state *hw) { struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; int i; 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)); } static void synaptics_report_slot(struct input_dev *dev, int slot, const struct synaptics_hw_state *hw) { input_mt_slot(dev, slot); input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); if (!hw) return; input_report_abs(dev, ABS_MT_POSITION_X, hw->x); input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); input_report_abs(dev, ABS_MT_PRESSURE, hw->z); } static void synaptics_report_mt_data(struct psmouse *psmouse, struct synaptics_mt_state *mt_state, const struct synaptics_hw_state *sgm) { struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; struct synaptics_hw_state *agm = &priv->agm; struct synaptics_mt_state *old = &priv->mt_state; switch (mt_state->count) { case 0: synaptics_report_slot(dev, 0, NULL); synaptics_report_slot(dev, 1, NULL); break; case 1: if (mt_state->sgm == -1) { synaptics_report_slot(dev, 0, NULL); synaptics_report_slot(dev, 1, NULL); } else if (mt_state->sgm == 0) { synaptics_report_slot(dev, 0, sgm); synaptics_report_slot(dev, 1, NULL); } else { synaptics_report_slot(dev, 0, NULL); synaptics_report_slot(dev, 1, sgm); } break; default: /* * If the finger slot contained in SGM is valid, and either * hasn't changed, or is new, or the old SGM has now moved to * AGM, then report SGM in MTB slot 0. * Otherwise, empty MTB slot 0. */ if (mt_state->sgm != -1 && (mt_state->sgm == old->sgm || old->sgm == -1 || mt_state->agm == old->sgm)) synaptics_report_slot(dev, 0, sgm); else synaptics_report_slot(dev, 0, NULL); /* * If the finger slot contained in AGM is valid, and either * hasn't changed, or is new, then report AGM in MTB slot 1. * Otherwise, empty MTB slot 1. * * However, in the case where the AGM is new, make sure that * that it is either the same as the old SGM, or there was no * SGM. * * Otherwise, if the SGM was just 1, and the new AGM is 2, then * the new AGM will keep the old SGM's tracking ID, which can * cause apparent drumroll. This happens if in the following * valid finger sequence: * * Action SGM AGM (MTB slot:Contact) * 1. Touch contact 0 (0:0) * 2. Touch contact 1 (0:0, 1:1) * 3. Lift contact 0 (1:1) * 4. Touch contacts 2,3 (0:2, 1:3) * * In step 4, contact 3, in AGM must not be given the same * tracking ID as contact 1 had in step 3. To avoid this, * the first agm with contact 3 is dropped and slot 1 is * invalidated (tracking ID = -1). */ if (mt_state->agm != -1 && (mt_state->agm == old->agm || (old->agm == -1 && (old->sgm == -1 || mt_state->agm == old->sgm)))) synaptics_report_slot(dev, 1, agm); else synaptics_report_slot(dev, 1, NULL); break; } /* Don't use active slot count to generate BTN_TOOL events. */ input_mt_report_pointer_emulation(dev, false); /* Send the number of fingers reported by touchpad itself. */ input_mt_report_finger_count(dev, mt_state->count); synaptics_report_buttons(psmouse, sgm); input_sync(dev); } /* Handle case where mt_state->count = 0 */ static void synaptics_image_sensor_0f(struct synaptics_data *priv, struct synaptics_mt_state *mt_state) { synaptics_mt_state_set(mt_state, 0, -1, -1); priv->mt_state_lost = false; } /* Handle case where mt_state->count = 1 */ static void synaptics_image_sensor_1f(struct synaptics_data *priv, struct synaptics_mt_state *mt_state) { struct synaptics_hw_state *agm = &priv->agm; struct synaptics_mt_state *old = &priv->mt_state; /* * If the last AGM was (0,0,0), and there is only one finger left, * then we absolutely know that SGM contains slot 0, and all other * fingers have been removed. */ if (priv->agm_pending && agm->z == 0) { synaptics_mt_state_set(mt_state, 1, 0, -1); priv->mt_state_lost = false; return; } switch (old->count) { case 0: synaptics_mt_state_set(mt_state, 1, 0, -1); break; case 1: /* * If mt_state_lost, then the previous transition was 3->1, * and SGM now contains either slot 0 or 1, but we don't know * which. So, we just assume that the SGM now contains slot 1. * * If pending AGM and either: * (a) the previous SGM slot contains slot 0, or * (b) there was no SGM slot * then, the SGM now contains slot 1 * * Case (a) happens with very rapid "drum roll" gestures, where * slot 0 finger is lifted and a new slot 1 finger touches * within one reporting interval. * * Case (b) happens if initially two or more fingers tap * briefly, and all but one lift before the end of the first * reporting interval. * * (In both these cases, slot 0 will becomes empty, so SGM * contains slot 1 with the new finger) * * Else, if there was no previous SGM, it now contains slot 0. * * Otherwise, SGM still contains the same slot. */ if (priv->mt_state_lost || (priv->agm_pending && old->sgm <= 0)) synaptics_mt_state_set(mt_state, 1, 1, -1); else if (old->sgm == -1) synaptics_mt_state_set(mt_state, 1, 0, -1); break; case 2: /* * If mt_state_lost, we don't know which finger SGM contains. * * So, report 1 finger, but with both slots empty. * We will use slot 1 on subsequent 1->1 */ if (priv->mt_state_lost) { synaptics_mt_state_set(mt_state, 1, -1, -1); break; } /* * Since the last AGM was NOT (0,0,0), it was the finger in * slot 0 that has been removed. * So, SGM now contains previous AGM's slot, and AGM is now * empty. */ synaptics_mt_state_set(mt_state, 1, old->agm, -1); break; case 3: /* * Since last AGM was not (0,0,0), we don't know which finger * is left. * * So, report 1 finger, but with both slots empty. * We will use slot 1 on subsequent 1->1 */ synaptics_mt_state_set(mt_state, 1, -1, -1); priv->mt_state_lost = true; break; case 4: case 5: /* mt_state was updated by AGM-CONTACT packet */ break; } } /* Handle case where mt_state->count = 2 */ static void synaptics_image_sensor_2f(struct synaptics_data *priv, struct synaptics_mt_state *mt_state) { struct synaptics_mt_state *old = &priv->mt_state; switch (old->count) { case 0: synaptics_mt_state_set(mt_state, 2, 0, 1); break; case 1: /* * If previous SGM contained slot 1 or higher, SGM now contains * slot 0 (the newly touching finger) and AGM contains SGM's * previous slot. * * Otherwise, SGM still contains slot 0 and AGM now contains * slot 1. */ if (old->sgm >= 1) synaptics_mt_state_set(mt_state, 2, 0, old->sgm); else synaptics_mt_state_set(mt_state, 2, 0, 1); break; case 2: /* * If mt_state_lost, SGM now contains either finger 1 or 2, but * we don't know which. * So, we just assume that the SGM contains slot 0 and AGM 1. */ if (priv->mt_state_lost) synaptics_mt_state_set(mt_state, 2, 0, 1); /* * Otherwise, use the same mt_state, since it either hasn't * changed, or was updated by a recently received AGM-CONTACT * packet. */ break; case 3: /* * 3->2 transitions have two unsolvable problems: * 1) no indication is given which finger was removed * 2) no way to tell if agm packet was for finger 3 * before 3->2, or finger 2 after 3->2. * * So, report 2 fingers, but empty all slots. * We will guess slots [0,1] on subsequent 2->2. */ synaptics_mt_state_set(mt_state, 2, -1, -1); priv->mt_state_lost = true; break; case 4: case 5: /* mt_state was updated by AGM-CONTACT packet */ break; } } /* Handle case where mt_state->count = 3 */ static void synaptics_image_sensor_3f(struct synaptics_data *priv, struct synaptics_mt_state *mt_state) { struct synaptics_mt_state *old = &priv->mt_state; switch (old->count) { case 0: synaptics_mt_state_set(mt_state, 3, 0, 2); break; case 1: /* * If previous SGM contained slot 2 or higher, SGM now contains * slot 0 (one of the newly touching fingers) and AGM contains * SGM's previous slot. * * Otherwise, SGM now contains slot 0 and AGM contains slot 2. */ if (old->sgm >= 2) synaptics_mt_state_set(mt_state, 3, 0, old->sgm); else synaptics_mt_state_set(mt_state, 3, 0, 2); break; case 2: /* * If the AGM previously contained slot 3 or higher, then the * newly touching finger is in the lowest available slot. * * If SGM was previously 1 or higher, then the new SGM is * now slot 0 (with a new finger), otherwise, the new finger * is now in a hidden slot between 0 and AGM's slot. * * In all such cases, the SGM now contains slot 0, and the AGM * continues to contain the same slot as before. */ if (old->agm >= 3) { synaptics_mt_state_set(mt_state, 3, 0, old->agm); break; } /* * After some 3->1 and all 3->2 transitions, we lose track * of which slot is reported by SGM and AGM. * * For 2->3 in this state, report 3 fingers, but empty all * slots, and we will guess (0,2) on a subsequent 0->3. * * To userspace, the resulting transition will look like: * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] */ if (priv->mt_state_lost) { synaptics_mt_state_set(mt_state, 3, -1, -1); break; } /* * If the (SGM,AGM) really previously contained slots (0, 1), * then we cannot know what slot was just reported by the AGM, * because the 2->3 transition can occur either before or after * the AGM packet. Thus, this most recent AGM could contain * either the same old slot 1 or the new slot 2. * Subsequent AGMs will be reporting slot 2. * * To userspace, the resulting transition will look like: * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] */ synaptics_mt_state_set(mt_state, 3, 0, -1); break; case 3: /* * If, for whatever reason, the previous agm was invalid, * Assume SGM now contains slot 0, AGM now contains slot 2. */ if (old->agm <= 2) synaptics_mt_state_set(mt_state, 3, 0, 2); /* * mt_state either hasn't changed, or was updated by a recently * received AGM-CONTACT packet. */ break; case 4: case 5: /* mt_state was updated by AGM-CONTACT packet */ break; } } /* Handle case where mt_state->count = 4, or = 5 */ static void synaptics_image_sensor_45f(struct synaptics_data *priv, struct synaptics_mt_state *mt_state) { /* mt_state was updated correctly by AGM-CONTACT packet */ priv->mt_state_lost = false; } static void synaptics_image_sensor_process(struct psmouse *psmouse, struct synaptics_hw_state *sgm) { struct synaptics_data *priv = psmouse->private; struct synaptics_hw_state *agm = &priv->agm; struct synaptics_mt_state mt_state; /* Initialize using current mt_state (as updated by last agm) */ mt_state = agm->mt_state; /* * Update mt_state using the new finger count and current mt_state. */ if (sgm->z == 0) synaptics_image_sensor_0f(priv, &mt_state); else if (sgm->w >= 4) synaptics_image_sensor_1f(priv, &mt_state); else if (sgm->w == 0) synaptics_image_sensor_2f(priv, &mt_state); else if (sgm->w == 1 && mt_state.count <= 3) synaptics_image_sensor_3f(priv, &mt_state); else synaptics_image_sensor_45f(priv, &mt_state); /* Send resulting input events to user space */ synaptics_report_mt_data(psmouse, &mt_state, sgm); /* Store updated mt_state */ priv->mt_state = agm->mt_state = mt_state; priv->agm_pending = false; } /* * 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; if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) return; if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { synaptics_image_sensor_process(psmouse, &hw); return; } 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 && hw.x > 1) { 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; } if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) synaptics_report_semi_mt_data(dev, &hw, &priv->agm, num_fingers); /* 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 (num_fingers > 0) { input_report_abs(dev, ABS_X, hw.x); input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); } input_report_abs(dev, ABS_PRESSURE, hw.z); if (SYN_CAP_PALMDETECT(priv->capabilities)) input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); if (SYN_CAP_MULTIFINGER(priv->capabilities)) { input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); } synaptics_report_buttons(psmouse, &hw); input_sync(dev); } static int synaptics_validate_byte(struct psmouse *psmouse, int idx, unsigned char pkt_type) { static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; const char *packet = psmouse->packet; 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: psmouse_err(psmouse, "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, i, SYN_NEWABS_STRICT)) { psmouse_info(psmouse, "using relaxed packet validation\n"); return SYN_NEWABS_RELAXED; } return SYN_NEWABS_STRICT; } static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; 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 (priv->pt_port) synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); } else synaptics_process_packet(psmouse); return PSMOUSE_FULL_PACKET; } return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; } /***************************************************************************** * Driver initialization/cleanup functions ****************************************************************************/ static void set_abs_position_params(struct input_dev *dev, struct synaptics_data *priv, int x_code, int y_code) { int x_min = priv->x_min ?: XMIN_NOMINAL; int x_max = priv->x_max ?: XMAX_NOMINAL; int y_min = priv->y_min ?: YMIN_NOMINAL; int y_max = priv->y_max ?: YMAX_NOMINAL; int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ? SYN_REDUCED_FILTER_FUZZ : 0; input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); input_abs_set_res(dev, x_code, priv->x_res); input_abs_set_res(dev, y_code, priv->y_res); } static void set_input_params(struct psmouse *psmouse, struct synaptics_data *priv) { struct input_dev *dev = psmouse->dev; int i; /* Things that apply to both modes */ __set_bit(INPUT_PROP_POINTER, dev->propbit); __set_bit(EV_KEY, dev->evbit); __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 (!priv->absolute_mode) { /* Relative mode */ __set_bit(EV_REL, dev->evbit); __set_bit(REL_X, dev->relbit); __set_bit(REL_Y, dev->relbit); return; } /* Absolute mode */ __set_bit(EV_ABS, dev->evbit); set_abs_position_params(dev, priv, ABS_X, ABS_Y); input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { set_abs_position_params(dev, priv, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* Image sensors can report per-contact pressure */ input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); input_mt_init_slots(dev, 2, INPUT_MT_POINTER); /* Image sensors can signal 4 and 5 finger clicks */ __set_bit(BTN_TOOL_QUADTAP, dev->keybit); __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { /* Non-image sensors with AGM use semi-mt */ __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); input_mt_init_slots(dev, 2, 0); set_abs_position_params(dev, priv, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); } if (SYN_CAP_PALMDETECT(priv->capabilities)) input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); __set_bit(BTN_TOUCH, dev->keybit); __set_bit(BTN_TOOL_FINGER, dev->keybit); if (SYN_CAP_MULTIFINGER(priv->capabilities)) { __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); __set_bit(BTN_TOOL_TRIPLETAP, 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); if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); /* See if this buttonpad has a top button area */ if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) { for (i = 0; topbuttonpad_pnp_ids[i]; i++) { if (strstr(psmouse->ps2dev.serio->firmware_id, topbuttonpad_pnp_ids[i])) { __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); break; } } } /* Clickpads report only left button */ __clear_bit(BTN_RIGHT, dev->keybit); __clear_bit(BTN_MIDDLE, dev->keybit); } } static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, void *data, char *buf) { struct synaptics_data *priv = psmouse->private; return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); } static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, void *data, const char *buf, size_t len) { struct synaptics_data *priv = psmouse->private; unsigned int value; int err; err = kstrtouint(buf, 10, &value); if (err) return err; if (value > 1) return -EINVAL; if (value == priv->disable_gesture) return len; priv->disable_gesture = value; if (value) priv->mode |= SYN_BIT_DISABLE_GESTURE; else priv->mode &= ~SYN_BIT_DISABLE_GESTURE; if (synaptics_mode_cmd(psmouse, priv->mode)) return -EIO; return len; } PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, synaptics_show_disable_gesture, synaptics_set_disable_gesture); static void synaptics_disconnect(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_disable_gesture.dattr); synaptics_reset(psmouse); kfree(priv); psmouse->private = NULL; } static int synaptics_reconnect(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; struct synaptics_data old_priv = *priv; unsigned char param[2]; int retry = 0; int error; do { psmouse_reset(psmouse); if (retry) { /* * On some boxes, right after resuming, the touchpad * needs some time to finish initializing (I assume * it needs time to calibrate) and start responding * to Synaptics-specific queries, so let's wait a * bit. */ ssleep(1); } ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); error = synaptics_detect(psmouse, 0); } while (error && ++retry < 3); if (error) return -1; if (retry > 1) psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); if (synaptics_query_hardware(psmouse)) { psmouse_err(psmouse, "Unable to query device.\n"); return -1; } if (synaptics_set_mode(psmouse)) { psmouse_err(psmouse, "Unable to initialize device.\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) { psmouse_err(psmouse, "hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n", 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; } return 0; } static bool impaired_toshiba_kbc; static const struct dmi_system_id toshiba_dmi_table[] __initconst = { #if defined(CONFIG_DMI) && defined(CONFIG_X86) { /* Toshiba Satellite */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), }, }, { /* Toshiba Dynabook */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), }, }, { /* Toshiba Portege M300 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), }, }, { /* Toshiba Portege M300 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), }, }, #endif { } }; static bool broken_olpc_ec; static const struct dmi_system_id olpc_dmi_table[] __initconst = { #if defined(CONFIG_DMI) && defined(CONFIG_OLPC) { /* OLPC XO-1 or XO-1.5 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), DMI_MATCH(DMI_PRODUCT_NAME, "XO"), }, }, #endif { } }; static const struct dmi_system_id min_max_dmi_table[] __initconst = { #if defined(CONFIG_DMI) { /* Lenovo ThinkPad Helix */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad Helix"), }, .driver_data = (int []){1024, 5052, 2258, 4832}, }, { /* Lenovo ThinkPad X240 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X240"), }, .driver_data = (int []){1232, 5710, 1156, 4696}, }, { /* Lenovo ThinkPad T440s */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T440"), }, .driver_data = (int []){1024, 5112, 2024, 4832}, }, { /* Lenovo ThinkPad T540p */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T540"), }, .driver_data = (int []){1024, 5056, 2058, 4832}, }, #endif { } }; void __init synaptics_module_init(void) { const struct dmi_system_id *min_max_dmi; impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); broken_olpc_ec = dmi_check_system(olpc_dmi_table); min_max_dmi = dmi_first_match(min_max_dmi_table); if (min_max_dmi) quirk_min_max = min_max_dmi->driver_data; } static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) { struct synaptics_data *priv; int err = -1; /* * The OLPC XO has issues with Synaptics' absolute mode; the constant * packet spew overloads the EC such that key presses on the keyboard * are missed. Given that, don't even attempt to use Absolute mode. * Relative mode seems to work just fine. */ if (absolute_mode && broken_olpc_ec) { psmouse_info(psmouse, "OLPC XO detected, not enabling Synaptics protocol.\n"); return -ENODEV; } psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); if (!priv) return -ENOMEM; psmouse_reset(psmouse); if (synaptics_query_hardware(psmouse)) { psmouse_err(psmouse, "Unable to query device.\n"); goto init_fail; } priv->absolute_mode = absolute_mode; if (SYN_ID_DISGEST_SUPPORTED(priv->identity)) priv->disable_gesture = true; if (synaptics_set_mode(psmouse)) { psmouse_err(psmouse, "Unable to initialize device.\n"); goto init_fail; } priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS; psmouse_info(psmouse, "Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n", SYN_ID_MODEL(priv->identity), SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity), priv->model_id, priv->capabilities, priv->ext_cap, priv->ext_cap_0c, priv->board_id, priv->firmware_id); set_input_params(psmouse, priv); /* * Encode touchpad model so that it can be used to set * input device->id.version and be visible to userspace. * Because version is __u16 we have to drop something. * Hardware info bits seem to be good candidates as they * are documented to be for Synaptics corp. internal use. */ psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) | (priv->model_id & 0x000000ff); if (absolute_mode) { psmouse->protocol_handler = synaptics_process_byte; psmouse->pktsize = 6; } else { /* Relative mode follows standard PS/2 mouse protocol */ psmouse->protocol_handler = psmouse_process_byte; psmouse->pktsize = 3; } psmouse->set_rate = synaptics_set_rate; psmouse->disconnect = synaptics_disconnect; psmouse->reconnect = synaptics_reconnect; psmouse->cleanup = synaptics_reset; /* Synaptics can usually stay in sync without extra help */ psmouse->resync_time = 0; if (SYN_CAP_PASS_THROUGH(priv->capabilities)) synaptics_pt_create(psmouse); /* * Toshiba's KBC seems to have trouble handling data from * Synaptics at full rate. Switch to a lower rate (roughly * the same rate as a standard PS/2 mouse). */ if (psmouse->rate >= 80 && impaired_toshiba_kbc) { psmouse_info(psmouse, "Toshiba %s detected, limiting rate to 40pps.\n", dmi_get_system_info(DMI_PRODUCT_NAME)); psmouse->rate = 40; } if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) { err = device_create_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_disable_gesture.dattr); if (err) { psmouse_err(psmouse, "Failed to create disable_gesture attribute (%d)", err); goto init_fail; } } return 0; init_fail: kfree(priv); return err; } int synaptics_init(struct psmouse *psmouse) { return __synaptics_init(psmouse, true); } int synaptics_init_relative(struct psmouse *psmouse) { return __synaptics_init(psmouse, false); } bool synaptics_supported(void) { return true; } #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ void __init synaptics_module_init(void) { } int synaptics_init(struct psmouse *psmouse) { return -ENOSYS; } bool synaptics_supported(void) { return false; } #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */