[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/input/mouse/synaptics.c b/src/kernel/linux/v4.14/drivers/input/mouse/synaptics.c
new file mode 100644
index 0000000..0714d57
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/input/mouse/synaptics.c
@@ -0,0 +1,1889 @@
+/*
+ * 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/rmi.h>
+#include <linux/i2c.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
+
+/* 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 = psmouse_sliced_command(psmouse, 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] = { 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",
+ "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 */
+ "LEN0049", /* Yoga 11e */
+ "LEN004a", /* W541 */
+ "LEN005b", /* P50 */
+ "LEN005e", /* T560 */
+ "LEN006c", /* T470s */
+ "LEN007a", /* T470s */
+ "LEN0071", /* T480 */
+ "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
+ "LEN0073", /* X1 Carbon G5 (Elantech) */
+ "LEN0091", /* X1 Carbon 6 */
+ "LEN0092", /* X1 Carbon 6 */
+ "LEN0093", /* T480 */
+ "LEN0096", /* X280 */
+ "LEN0097", /* X280 -> ALPS trackpoint */
+ "LEN0099", /* X1 Extreme 1st */
+ "LEN009b", /* T580 */
+ "LEN200f", /* T450s */
+ "LEN2044", /* L470 */
+ "LEN2054", /* E480 */
+ "LEN2055", /* E580 */
+ "SYN3052", /* HP EliteBook 840 G4 */
+ "SYN3221", /* HP 15-ay000 */
+ "SYN323d", /* HP Spectre X360 13-w013dx */
+ "SYN3257", /* HP Envy 13-ad105ng */
+ 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 = psmouse_sliced_command(psmouse, 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 = psmouse_sliced_command(psmouse, 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 = psmouse_sliced_command(parent, 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 void 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;
+
+ /* 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(info->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->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);
+ input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
+
+ /* 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(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.
+ */
+ input_mt_init_slots(dev, 2,
+ INPUT_MT_POINTER |
+ (cr48_profile_sensor ?
+ INPUT_MT_TRACK : INPUT_MT_SEMI_MT));
+
+ /*
+ * 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);
+
+ __set_bit(BTN_TOUCH, dev->keybit);
+ __set_bit(BTN_TOOL_FINGER, dev->keybit);
+
+ if (synaptics_has_multifinger(priv)) {
+ __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
+ __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
+ }
+
+ if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
+ SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
+ __set_bit(BTN_FORWARD, dev->keybit);
+ __set_bit(BTN_BACK, dev->keybit);
+ }
+
+ if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
+ for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->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(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);
+ /* 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;
+
+ /*
+ * 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);
+
+ 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 = ((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 */