// SPDX-License-Identifier: GPL-2.0-only /* * 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) * * Trademarks are the property of their respective owners.
*/
/* * 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
*/ staticint synaptics_mode_cmd(struct psmouse *psmouse, u8 mode)
{
u8 param[1]; int error;
error = ps2_sliced_command(&psmouse->ps2dev, mode); if (error) return error;
/* * Send a command to the synaptics touchpad by special commands
*/ staticint synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
{ int error;
error = ps2_sliced_command(&psmouse->ps2dev, cmd); if (error) return error;
error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); if (error) return error;
/* * Read the model-id bytes from the touchpad * see also SYN_MODEL_* macros
*/ staticint 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
*/ staticint 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
*/ staticint 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
*/ staticint 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
*/ staticint 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;
}
staticint 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;
/* * 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.
*/ staticint synaptics_invert_y(int y)
{ return YMAX_NOMINAL + YMIN_NOMINAL - y;
}
/* * Apply quirk(s) if the hardware matches
*/ staticvoid 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;
/***************************************************************************** * Synaptics pass-through PS/2 port support
****************************************************************************/ staticint synaptics_pt_write(struct serio *serio, u8 c)
{ struct psmouse *parent = psmouse_from_serio(serio->parent);
u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ int error;
error = ps2_sliced_command(&parent->ps2dev, c); if (error) return error;
error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); if (error) return error;
/* 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");
}
}
psmouse_info(psmouse, "serio: %s port at %s\n",
serio->name, psmouse->phys);
serio_register_port(serio);
}
/***************************************************************************** * Functions to interpret the absolute mode packets
****************************************************************************/
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;
} elseif (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;
} elseif (time_after(jiffies,
priv->press_start +
msecs_to_jiffies(50))) {
priv->report_press = true;
}
} else {
priv->press = false;
}
hw->left = priv->report_press;
} elseif (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;
/* * 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; elseif (hw->x == X_MAX_POSITIVE)
hw->x = XMAX;
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;
/* * Update mt_state using the new finger count and current mt_state.
*/ if (sgm->z == 0)
num_fingers = 0; elseif (sgm->w >= 4)
num_fingers = 1; elseif (sgm->w == 0)
num_fingers = 2; elseif (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);
}
staticbool synaptics_has_multifinger(struct synaptics_data *priv)
{ if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) returntrue;
/* Advanced gesture mode also sends multi finger data */ return synaptics_has_agm(priv);
}
/* * called for each full received packet from the touchpad
*/ staticvoid 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.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: /* * SYN_MODEL_PEN(info->model_id): even if * the device supports pen, we treat it 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);
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); returnfalse;
}
}
staticenum 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;
}
}
if (psmouse->pktcnt >= 6) { /* Full packet received */ if (unlikely(priv->pkt_type == SYN_NEWABS))
priv->pkt_type = synaptics_detect_pkt_type(psmouse);
/* Things that apply to both modes */
__set_bit(INPUT_PROP_POINTER, dev->propbit);
input_set_capability(dev, EV_KEY, BTN_LEFT);
/* Clickpads report only left button */ if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
input_set_capability(dev, EV_KEY, BTN_RIGHT); if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
input_set_capability(dev, EV_KEY, BTN_MIDDLE);
}
/* Image sensors can signal 4 and 5 finger clicks */
input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
} elseif (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
set_abs_position_params(dev, info,
ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* * Profile sensor in CR-48 tracks contacts reasonably well, * other non-image sensors with AGM use semi-mt.
*/
error = input_mt_init_slots(dev, 2,
INPUT_MT_POINTER |
(cr48_profile_sensor ?
INPUT_MT_TRACK :
INPUT_MT_SEMI_MT)); if (error) return error;
/* * For semi-mt devices we send ABS_X/Y ourselves instead of * input_mt_report_pointer_emulation. But * input_mt_init_slots() resets the fuzz to 0, leading to a * filtered ABS_MT_POSITION_X but an unfiltered ABS_X * position. Let's re-initialize ABS_X/Y here.
*/ if (!cr48_profile_sensor)
set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
}
if (SYN_CAP_PALMDETECT(info->capabilities))
input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
input_set_capability(dev, EV_KEY, BTN_0 + i);
if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
__set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
}
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;
}
/* * 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;
}
err = set_input_params(psmouse, priv); if (err) {
psmouse_err(psmouse, "failed to set up capabilities: %d\n", err); goto init_fail;
}
/* * Encode touchpad model so that it can be used to set * input device->id.version and be visible to userspace. * Because version is __u16 we have to drop something. * Hardware info bits seem to be good candidates as they * are documented to be for Synaptics corp. internal use.
*/
psmouse->model = ((info->model_id & 0x00ff0000) >> 8) |
(info->model_id & 0x000000ff);
psmouse->set_rate = synaptics_set_rate;
psmouse->disconnect = synaptics_disconnect;
psmouse->reconnect = synaptics_reconnect;
psmouse->fast_reconnect = NULL;
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;
}
}
/* * 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;
/* * 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,
};
staticint 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.");
/* * synaptics_setup_intertouch - called once the PS/2 devices are enumerated * and decides to instantiate a SMBus InterTouch device.
*/ staticint 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;
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);
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.