/* * 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 #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 /* maximum ABS_MT_POSITION displacement (in mm) */ #define DMAX 10 /***************************************************************************** * 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, u8 mode) { u8 param[1]; int error; error = ps2_sliced_command(&psmouse->ps2dev, mode); if (error) return error; param[0] = SYN_PS_SET_MODE2; error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); if (error) return error; return 0; } int synaptics_detect(struct psmouse *psmouse, bool set_properties) { struct ps2dev *ps2dev = &psmouse->ps2dev; u8 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); } #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) /* 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, L440, L540, T540, W540, X1 Carbon 2nd */ "LEN0035", /* X240 */ "LEN0036", /* T440 */ "LEN0037", /* X1 Carbon 2nd */ "LEN0038", "LEN0039", /* T440s */ "LEN0041", "LEN0042", /* Yoga */ "LEN0045", "LEN0047", "LEN0049", "LEN2000", /* S540 */ "LEN2001", /* Edge E431 */ "LEN2002", /* Edge E531 */ "LEN2003", "LEN2004", /* L440 */ "LEN2005", "LEN2006", /* Edge E440/E540 */ "LEN2007", "LEN2008", "LEN2009", "LEN200A", "LEN200B", NULL }; static const char * const smbus_pnp_ids[] = { /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ "LEN0048", /* X1 Carbon 3 */ "LEN0046", /* X250 */ "LEN004a", /* W541 */ "LEN0071", /* T480 */ "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */ "LEN0073", /* X1 Carbon G5 (Elantech) */ "LEN0092", /* X1 Carbon 6 */ "LEN0096", /* X280 */ "LEN0097", /* X280 -> ALPS trackpoint */ "LEN200f", /* T450s */ NULL }; static const char * const forcepad_pnp_ids[] = { "SYN300D", "SYN3014", NULL }; /* * Send a command to the synpatics touchpad by special commands */ static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) { int error; error = ps2_sliced_command(&psmouse->ps2dev, cmd); if (error) return error; error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); if (error) return error; return 0; } static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) { int error; union { __be32 be_val; char buf[4]; } resp = { 0 }; error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); if (error) return error; *val = be32_to_cpu(resp.be_val); return 0; } /* * Identify Touchpad * See also the SYN_ID_* macros */ static int synaptics_identify(struct psmouse *psmouse, struct synaptics_device_info *info) { int error; error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); if (error) return error; return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; } /* * Read the model-id bytes from the touchpad * see also SYN_MODEL_* macros */ static int synaptics_model_id(struct psmouse *psmouse, struct synaptics_device_info *info) { return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); } /* * Read the firmware id from the touchpad */ static int synaptics_firmware_id(struct psmouse *psmouse, struct synaptics_device_info *info) { return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, &info->firmware_id); } /* * Read the board id and the "More Extended Queries" from the touchpad * The board id is encoded in the "QUERY MODES" response */ static int synaptics_query_modes(struct psmouse *psmouse, struct synaptics_device_info *info) { u8 bid[3]; int error; /* firmwares prior 7.5 have no board_id encoded */ if (SYN_ID_FULL(info->identity) < 0x705) return 0; error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); if (error) return error; info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; if (SYN_MEXT_CAP_BIT(bid[0])) return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, &info->ext_cap_10); return 0; } /* * Read the capability-bits from the touchpad * see also the SYN_CAP_* macros */ static int synaptics_capability(struct psmouse *psmouse, struct synaptics_device_info *info) { int error; error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, &info->capabilities); if (error) return error; info->ext_cap = info->ext_cap_0c = 0; /* * Older firmwares had submodel ID fixed to 0x47 */ if (SYN_ID_FULL(info->identity) < 0x705 && SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { return -ENXIO; } /* * Unless capExtended is set the rest of the flags should be ignored */ if (!SYN_CAP_EXTENDED(info->capabilities)) info->capabilities = 0; if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, &info->ext_cap); if (error) { psmouse_warn(psmouse, "device claims to have extended capabilities, but I'm not able to read them.\n"); } else { /* * if nExtBtn is greater than 8 it should be considered * invalid and treated as 0 */ if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) info->ext_cap &= ~SYN_CAP_MB_MASK; } } if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, &info->ext_cap_0c); if (error) psmouse_warn(psmouse, "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); } return 0; } /* * Read touchpad resolution and maximum reported coordinates * Resolution is left zero if touchpad does not support the query */ static int synaptics_resolution(struct psmouse *psmouse, struct synaptics_device_info *info) { u8 resp[3]; int error; if (SYN_ID_MAJOR(info->identity) < 4) return 0; error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); if (!error) { if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { info->x_res = resp[0]; /* x resolution in units/mm */ info->y_res = resp[2]; /* y resolution in units/mm */ } } if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { error = synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp); if (error) { psmouse_warn(psmouse, "device claims to have max coordinates query, but I'm not able to read it.\n"); } else { info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); psmouse_info(psmouse, "queried max coordinates: x [..%d], y [..%d]\n", info->x_max, info->y_max); } } if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || /* * Firmware v8.1 does not report proper number of extended * capabilities, but has been proven to report correct min * coordinates. */ SYN_ID_FULL(info->identity) == 0x801)) { error = synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp); if (error) { psmouse_warn(psmouse, "device claims to have min coordinates query, but I'm not able to read it.\n"); } else { info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); psmouse_info(psmouse, "queried min coordinates: x [%d..], y [%d..]\n", info->x_min, info->y_min); } } return 0; } static int synaptics_query_hardware(struct psmouse *psmouse, struct synaptics_device_info *info) { int error; memset(info, 0, sizeof(*info)); error = synaptics_identify(psmouse, info); if (error) return error; error = synaptics_model_id(psmouse, info); if (error) return error; error = synaptics_firmware_id(psmouse, info); if (error) return error; error = synaptics_query_modes(psmouse, info); if (error) return error; error = synaptics_capability(psmouse, info); if (error) return error; error = synaptics_resolution(psmouse, info); if (error) return error; return 0; } #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ #ifdef CONFIG_MOUSE_PS2_SYNAPTICS static bool cr48_profile_sensor; #define ANY_BOARD_ID 0 struct min_max_quirk { const char * const *pnp_ids; struct { u32 min, max; } board_id; u32 x_min, x_max, y_min, y_max; }; static const struct min_max_quirk min_max_pnpid_table[] = { { (const char * const []){"LEN0033", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1024, 5052, 2258, 4832 }, { (const char * const []){"LEN0042", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1232, 5710, 1156, 4696 }, { (const char * const []){"LEN0034", "LEN0036", "LEN0037", "LEN0039", "LEN2002", "LEN2004", NULL}, {ANY_BOARD_ID, 2961}, 1024, 5112, 2024, 4832 }, { (const char * const []){"LEN2000", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1024, 5113, 2021, 4832 }, { (const char * const []){"LEN2001", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1024, 5022, 2508, 4832 }, { (const char * const []){"LEN2006", NULL}, {2691, 2691}, 1024, 5045, 2457, 4832 }, { (const char * const []){"LEN2006", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1264, 5675, 1171, 4688 }, { } }; /***************************************************************************** * 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; } /* * Apply quirk(s) if the hardware matches */ static void synaptics_apply_quirks(struct psmouse *psmouse, struct synaptics_device_info *info) { int i; for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { if (!psmouse_matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) continue; if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && info->board_id < min_max_pnpid_table[i].board_id.min) continue; if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && info->board_id > min_max_pnpid_table[i].board_id.max) continue; info->x_min = min_max_pnpid_table[i].x_min; info->x_max = min_max_pnpid_table[i].x_max; info->y_min = min_max_pnpid_table[i].y_min; info->y_max = min_max_pnpid_table[i].y_max; psmouse_info(psmouse, "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", info->x_min, info->x_max, info->y_min, info->y_max); break; } } static bool synaptics_has_agm(struct synaptics_data *priv) { return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); } static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) { static u8 param = 0xc8; int error; error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); if (error) return error; error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); if (error) return error; return 0; } static int synaptics_set_mode(struct psmouse *psmouse) { struct synaptics_data *priv = psmouse->private; int error; 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->info.capabilities)) priv->mode |= SYN_BIT_W_MODE; error = synaptics_mode_cmd(psmouse, priv->mode); if (error) return error; if (priv->absolute_mode && synaptics_has_agm(priv)) { error = synaptics_set_advanced_gesture_mode(psmouse); if (error) { psmouse_err(psmouse, "Advanced gesture mode init failed: %d\n", error); return error; } } 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, u8 c) { struct psmouse *parent = serio_get_drvdata(serio->parent); u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ int error; error = ps2_sliced_command(&parent->ps2dev, c); if (error) return error; error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); if (error) return error; 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(u8 *buf) { return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; } static void synaptics_pass_pt_packet(struct serio *ptport, u8 *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_parse_agm(const u8 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: we are only interested in the count */ priv->agm_count = buf[1]; break; default: break; } } static void synaptics_parse_ext_buttons(const u8 buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) { unsigned int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; unsigned int ext_mask = GENMASK(ext_bits - 1, 0); hw->ext_buttons = buf[4] & ext_mask; hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits; } static int synaptics_parse_hw_state(const u8 buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) { memset(hw, 0, sizeof(struct synaptics_hw_state)); if (SYN_MODEL_NEWABS(priv->info.model_id)) { hw->w = (((buf[0] & 0x30) >> 2) | ((buf[0] & 0x04) >> 1) | ((buf[3] & 0x04) >> 2)); if (synaptics_has_agm(priv) && 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]; hw->left = (buf[0] & 0x01) ? 1 : 0; hw->right = (buf[0] & 0x02) ? 1 : 0; if (priv->is_forcepad) { /* * ForcePads, like Clickpads, use middle button * bits to report primary button clicks. * Unfortunately they report primary button not * only when user presses on the pad above certain * threshold, but also when there are more than one * finger on the touchpad, which interferes with * out multi-finger gestures. */ if (hw->z == 0) { /* No contacts */ priv->press = priv->report_press = false; } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { /* * Single-finger touch with pressure above * the threshold. If pressure stays long * enough, we'll start reporting primary * button. We rely on the device continuing * sending data even if finger does not * move. */ if (!priv->press) { priv->press_start = jiffies; priv->press = true; } else if (time_after(jiffies, priv->press_start + msecs_to_jiffies(50))) { priv->report_press = true; } } else { priv->press = false; } hw->left = priv->report_press; } else if (SYN_CAP_CLICKPAD(priv->info.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->info.capabilities)) { hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; if (hw->w == 2) hw->scroll = (s8)buf[1]; } if (SYN_CAP_FOUR_BUTTON(priv->info.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->info.ext_cap) > 0 && ((buf[0] ^ buf[3]) & 0x02)) { synaptics_parse_ext_buttons(buf, priv, hw); } } 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_ext_buttons(struct psmouse *psmouse, const struct synaptics_hw_state *hw) { struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; int i; if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) return; /* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ if ((SYN_ID_FULL(priv->info.identity) == 0x801 || SYN_ID_FULL(priv->info.identity) == 0x802) && !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) return; if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { for (i = 0; i < ext_bits; i++) { input_report_key(dev, BTN_0 + 2 * i, hw->ext_buttons & BIT(i)); input_report_key(dev, BTN_1 + 2 * i, hw->ext_buttons & BIT(i + ext_bits)); } return; } /* * This generation of touchpads has the trackstick buttons * physically wired to the touchpad. Re-route them through * the pass-through interface. */ if (priv->pt_port) { u8 pt_buttons; /* The trackstick expects at most 3 buttons */ pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2; serio_interrupt(priv->pt_port, PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); } } 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; input_report_key(dev, BTN_LEFT, hw->left); input_report_key(dev, BTN_RIGHT, hw->right); if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) input_report_key(dev, BTN_MIDDLE, hw->middle); if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { input_report_key(dev, BTN_FORWARD, hw->up); input_report_key(dev, BTN_BACK, hw->down); } synaptics_report_ext_buttons(psmouse, hw); } static void synaptics_report_mt_data(struct psmouse *psmouse, const struct synaptics_hw_state *sgm, int num_fingers) { struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; struct input_mt_pos pos[2]; int slot[2], nsemi, i; nsemi = clamp_val(num_fingers, 0, 2); for (i = 0; i < nsemi; i++) { pos[i].x = hw[i]->x; pos[i].y = synaptics_invert_y(hw[i]->y); } input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res); for (i = 0; i < nsemi; i++) { input_mt_slot(dev, slot[i]); input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); } input_mt_drop_unused(dev); /* 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, num_fingers); synaptics_report_buttons(psmouse, sgm); input_sync(dev); } static void synaptics_image_sensor_process(struct psmouse *psmouse, struct synaptics_hw_state *sgm) { struct synaptics_data *priv = psmouse->private; int num_fingers; /* * Update mt_state using the new finger count and current mt_state. */ if (sgm->z == 0) num_fingers = 0; else if (sgm->w >= 4) num_fingers = 1; else if (sgm->w == 0) num_fingers = 2; else if (sgm->w == 1) num_fingers = priv->agm_count ? priv->agm_count : 3; else num_fingers = 4; /* Send resulting input events to user space */ synaptics_report_mt_data(psmouse, sgm, num_fingers); } static bool synaptics_has_multifinger(struct synaptics_data *priv) { if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) return true; /* Advanced gesture mode also sends multi finger data */ return synaptics_has_agm(priv); } /* * 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_device_info *info = &priv->info; 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(info->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(info->capabilities)) { switch (hw.w) { case 0 ... 1: if (synaptics_has_multifinger(priv)) num_fingers = hw.w + 2; break; case 2: if (SYN_MODEL_PEN(info->model_id)) ; /* Nothing, treat a pen as a single finger */ break; case 4 ... 15: if (SYN_CAP_PALMDETECT(info->capabilities)) finger_width = hw.w; break; } } } else { num_fingers = 0; finger_width = 0; } if (cr48_profile_sensor) { synaptics_report_mt_data(psmouse, &hw, num_fingers); return; } if (SYN_CAP_ADV_GESTURE(info->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(info->capabilities)) input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); if (synaptics_has_multifinger(priv)) { 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 bool synaptics_validate_byte(struct psmouse *psmouse, int idx, enum synaptics_pkt_type pkt_type) { static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; const u8 *packet = psmouse->packet; if (idx < 0 || idx > 4) return false; 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 false; } } static enum synaptics_pkt_type 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->info.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_device_info *info, int x_code, int y_code) { int x_min = info->x_min ?: XMIN_NOMINAL; int x_max = info->x_max ?: XMAX_NOMINAL; int y_min = info->y_min ?: YMIN_NOMINAL; int y_max = info->y_max ?: YMAX_NOMINAL; int fuzz = SYN_CAP_REDUCED_FILTERING(info->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, info->x_res); input_abs_set_res(dev, y_code, info->y_res); } static int set_input_params(struct psmouse *psmouse, struct synaptics_data *priv) { struct input_dev *dev = psmouse->dev; struct synaptics_device_info *info = &priv->info; int i; int error; /* Reset default psmouse capabilities */ __clear_bit(EV_REL, dev->evbit); bitmap_zero(dev->relbit, REL_CNT); bitmap_zero(dev->keybit, KEY_CNT); /* Things that apply to both modes */ __set_bit(INPUT_PROP_POINTER, dev->propbit); input_set_capability(dev, EV_KEY, BTN_LEFT); /* Clickpads report only left button */ if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { input_set_capability(dev, EV_KEY, BTN_RIGHT); if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) input_set_capability(dev, EV_KEY, BTN_MIDDLE); } if (!priv->absolute_mode) { /* Relative mode */ input_set_capability(dev, EV_REL, REL_X); input_set_capability(dev, EV_REL, REL_Y); return 0; } /* Absolute mode */ set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); if (cr48_profile_sensor) input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { set_abs_position_params(dev, info, 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); error = input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); if (error) return error; /* Image sensors can signal 4 and 5 finger clicks */ input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { set_abs_position_params(dev, info, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* * Profile sensor in CR-48 tracks contacts reasonably well, * other non-image sensors with AGM use semi-mt. */ error = input_mt_init_slots(dev, 2, INPUT_MT_POINTER | (cr48_profile_sensor ? INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); if (error) return error; /* * For semi-mt devices we send ABS_X/Y ourselves instead of * input_mt_report_pointer_emulation. But * input_mt_init_slots() resets the fuzz to 0, leading to a * filtered ABS_MT_POSITION_X but an unfiltered ABS_X * position. Let's re-initialize ABS_X/Y here. */ if (!cr48_profile_sensor) set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); } if (SYN_CAP_PALMDETECT(info->capabilities)) input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); input_set_capability(dev, EV_KEY, BTN_TOUCH); input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER); if (synaptics_has_multifinger(priv)) { input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); } if (SYN_CAP_FOUR_BUTTON(info->capabilities) || SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { input_set_capability(dev, EV_KEY, BTN_FORWARD); input_set_capability(dev, EV_KEY, BTN_BACK); } if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) input_set_capability(dev, EV_KEY, BTN_0 + i); if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); } return 0; } 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; /* * We might have left a breadcrumb when trying to * set up SMbus companion. */ psmouse_smbus_cleanup(psmouse); if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->info.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_device_info info; u8 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 error; if (retry > 1) psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device.\n"); return error; } error = synaptics_set_mode(psmouse); if (error) { psmouse_err(psmouse, "Unable to initialize device.\n"); return error; } if (info.identity != priv->info.identity || info.model_id != priv->info.model_id || info.capabilities != priv->info.capabilities || info.ext_cap != priv->info.ext_cap) { psmouse_err(psmouse, "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", priv->info.identity, info.identity, priv->info.model_id, info.model_id, priv->info.capabilities, info.capabilities, priv->info.ext_cap, info.ext_cap); return -ENXIO; } 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 __initconst cr48_dmi_table[] = { #if defined(CONFIG_DMI) && defined(CONFIG_X86) { /* Cr-48 Chromebook (Codename Mario) */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "IEC"), DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), }, }, #endif { } }; void __init synaptics_module_init(void) { impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); broken_olpc_ec = dmi_check_system(olpc_dmi_table); cr48_profile_sensor = dmi_check_system(cr48_dmi_table); } static int synaptics_init_ps2(struct psmouse *psmouse, struct synaptics_device_info *info, bool absolute_mode) { struct synaptics_data *priv; int err; synaptics_apply_quirks(psmouse, info); psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); if (!priv) return -ENOMEM; priv->info = *info; priv->absolute_mode = absolute_mode; if (SYN_ID_DISGEST_SUPPORTED(info->identity)) priv->disable_gesture = true; /* * Unfortunately ForcePad capability is not exported over PS/2, * so we have to resort to checking PNP IDs. */ priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); err = synaptics_set_mode(psmouse); if (err) { psmouse_err(psmouse, "Unable to initialize device.\n"); goto init_fail; } priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? SYN_NEWABS : SYN_OLDABS; psmouse_info(psmouse, "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", SYN_ID_MODEL(info->identity), SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), info->model_id, info->capabilities, info->ext_cap, info->ext_cap_0c, info->ext_cap_10, info->board_id, info->firmware_id); err = set_input_params(psmouse, priv); if (err) { psmouse_err(psmouse, "failed to set up capabilities: %d\n", err); goto init_fail; } /* * 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 = ((info->model_id & 0x00ff0000) >> 8) | (info->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(info->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(info->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; } static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) { struct synaptics_device_info info; int error; psmouse_reset(psmouse); error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device: %d\n", error); return error; } return synaptics_init_ps2(psmouse, &info, absolute_mode); } int synaptics_init_absolute(struct psmouse *psmouse) { return __synaptics_init(psmouse, true); } int synaptics_init_relative(struct psmouse *psmouse) { return __synaptics_init(psmouse, false); } static int synaptics_setup_ps2(struct psmouse *psmouse, struct synaptics_device_info *info) { bool absolute_mode = true; int error; /* * 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 (broken_olpc_ec) { psmouse_info(psmouse, "OLPC XO detected, forcing relative protocol.\n"); absolute_mode = false; } error = synaptics_init_ps2(psmouse, info, absolute_mode); if (error) return error; return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; } #else /* CONFIG_MOUSE_PS2_SYNAPTICS */ void __init synaptics_module_init(void) { } static int __maybe_unused synaptics_setup_ps2(struct psmouse *psmouse, struct synaptics_device_info *info) { return -ENOSYS; } #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ #ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS /* * The newest Synaptics device can use a secondary bus (called InterTouch) 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 { SYNAPTICS_INTERTOUCH_NOT_SET = -1, SYNAPTICS_INTERTOUCH_OFF, SYNAPTICS_INTERTOUCH_ON, }; static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); static int synaptics_create_intertouch(struct psmouse *psmouse, struct synaptics_device_info *info, bool leave_breadcrumbs) { bool topbuttonpad = psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); const struct rmi_device_platform_data pdata = { .sensor_pdata = { .sensor_type = rmi_sensor_touchpad, .axis_align.flip_y = true, .kernel_tracking = false, .topbuttonpad = topbuttonpad, }, .f30_data = { .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), .trackstick_buttons = !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), }, }; const struct i2c_board_info intertouch_board = { I2C_BOARD_INFO("rmi4_smbus", 0x2c), .flags = I2C_CLIENT_HOST_NOTIFY, }; return psmouse_smbus_init(psmouse, &intertouch_board, &pdata, sizeof(pdata), leave_breadcrumbs); } /** * synaptics_setup_intertouch - called once the PS/2 devices are enumerated * and decides to instantiate a SMBus InterTouch device. */ static int synaptics_setup_intertouch(struct psmouse *psmouse, struct synaptics_device_info *info, bool leave_breadcrumbs) { int error; if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) return -ENXIO; if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) { if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) psmouse_info(psmouse, "Your touchpad (%s) says it can support a different bus. " "If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n", psmouse->ps2dev.serio->firmware_id); return -ENXIO; } } psmouse_info(psmouse, "Trying to set up SMBus access\n"); error = synaptics_create_intertouch(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; } int synaptics_init_smbus(struct psmouse *psmouse) { struct synaptics_device_info info; int error; psmouse_reset(psmouse); error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device: %d\n", error); return error; } if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) return -ENXIO; return synaptics_create_intertouch(psmouse, &info, false); } #else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ static int __maybe_unused synaptics_setup_intertouch(struct psmouse *psmouse, struct synaptics_device_info *info, bool leave_breadcrumbs) { return -ENOSYS; } int synaptics_init_smbus(struct psmouse *psmouse) { return -ENOSYS; } #endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ #if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) int synaptics_init(struct psmouse *psmouse) { struct synaptics_device_info info; int error; int retval; psmouse_reset(psmouse); error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device: %d\n", error); return error; } if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { if ((!IS_ENABLED(CONFIG_RMI4_SMB) || !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && /* Forcepads need F21, which is not ready */ !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { psmouse_warn(psmouse, "The touchpad can support a better bus than the too old PS/2 protocol. " "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); } error = synaptics_setup_intertouch(psmouse, &info, true); if (!error) return PSMOUSE_SYNAPTICS_SMBUS; } retval = synaptics_setup_ps2(psmouse, &info); if (retval < 0) { /* * Not using any flavor of Synaptics support, so clean up * SMbus breadcrumbs, if any. */ psmouse_smbus_cleanup(psmouse); } return retval; } #else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ int synaptics_init(struct psmouse *psmouse) { return -ENOSYS; } #endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */