| /* |
| * 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/delay.h> |
| #include <linux/dmi.h> |
| #include <linux/input/mt.h> |
| #include <linux/serio.h> |
| #include <linux/libps2.h> |
| #include <linux/slab.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. |
| * 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 |
| |
| static bool cr48_profile_sensor; |
| |
| struct min_max_quirk { |
| const char * const *pnp_ids; |
| int x_min, x_max, y_min, y_max; |
| }; |
| |
| static const struct min_max_quirk min_max_pnpid_table[] = { |
| { |
| (const char * const []){"LEN0033", NULL}, |
| 1024, 5052, 2258, 4832 |
| }, |
| { |
| (const char * const []){"LEN0035", "LEN0042", NULL}, |
| 1232, 5710, 1156, 4696 |
| }, |
| { |
| (const char * const []){"LEN0034", "LEN0036", "LEN0039", |
| "LEN2002", "LEN2004", NULL}, |
| 1024, 5112, 2024, 4832 |
| }, |
| { |
| (const char * const []){"LEN2001", NULL}, |
| 1024, 5022, 2508, 4832 |
| }, |
| { } |
| }; |
| |
| /* 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", |
| "LEN0038", |
| "LEN0039", /* T440s */ |
| "LEN0041", |
| "LEN0042", /* Yoga */ |
| "LEN0045", |
| "LEN0046", |
| "LEN0047", |
| "LEN0048", |
| "LEN0049", |
| "LEN2000", |
| "LEN2001", /* Edge E431 */ |
| "LEN2002", /* Edge E531 */ |
| "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 int synaptics_resolution(struct psmouse *psmouse) |
| { |
| struct synaptics_data *priv = psmouse->private; |
| unsigned char resp[3]; |
| int i; |
| |
| 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 */ |
| } |
| } |
| |
| for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { |
| if (psmouse_matches_pnp_id(psmouse, |
| min_max_pnpid_table[i].pnp_ids)) { |
| priv->x_min = min_max_pnpid_table[i].x_min; |
| priv->x_max = min_max_pnpid_table[i].x_max; |
| priv->y_min = min_max_pnpid_table[i].y_min; |
| priv->y_max = min_max_pnpid_table[i].y_max; |
| return 0; |
| } |
| } |
| |
| 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 bool is_forcepad; |
| |
| 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)); |
| |
| 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]; |
| |
| hw->left = (buf[0] & 0x01) ? 1 : 0; |
| hw->right = (buf[0] & 0x02) ? 1 : 0; |
| |
| if (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->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_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; |
| } |
| |
| static void synaptics_profile_sensor_process(struct psmouse *psmouse, |
| struct synaptics_hw_state *sgm, |
| int num_fingers) |
| { |
| struct input_dev *dev = psmouse->dev; |
| struct synaptics_data *priv = psmouse->private; |
| 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); |
| |
| 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); |
| input_mt_report_pointer_emulation(dev, false); |
| input_mt_report_finger_count(dev, num_fingers); |
| |
| synaptics_report_buttons(psmouse, sgm); |
| |
| input_sync(dev); |
| } |
| |
| /* |
| * 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 (cr48_profile_sensor) { |
| synaptics_profile_sensor_process(psmouse, &hw, num_fingers); |
| return; |
| } |
| |
| 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 (cr48_profile_sensor) |
| input_set_abs_params(dev, ABS_MT_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)) { |
| set_abs_position_params(dev, priv, 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. |
| */ |
| input_mt_init_slots(dev, 2, |
| INPUT_MT_POINTER | |
| (cr48_profile_sensor ? |
| INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); |
| } |
| |
| 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); |
| if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids)) |
| __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); |
| /* 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 __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 |
| { } |
| }; |
| |
| static const struct dmi_system_id forcepad_dmi_table[] __initconst = { |
| #if defined(CONFIG_DMI) && defined(CONFIG_X86) |
| { |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"), |
| }, |
| }, |
| #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); |
| |
| /* |
| * Unfortunately ForcePad capability is not exported over PS/2, |
| * so we have to resort to checking DMI. |
| */ |
| is_forcepad = dmi_check_system(forcepad_dmi_table); |
| } |
| |
| 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 */ |