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1905 lines
50 KiB
1905 lines
50 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Synaptics TouchPad PS/2 mouse driver |
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* |
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* 2003 Dmitry Torokhov <[email protected]> |
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* Added support for pass-through port. Special thanks to Peter Berg Larsen |
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* for explaining various Synaptics quirks. |
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* |
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* 2003 Peter Osterlund <[email protected]> |
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* Ported to 2.5 input device infrastructure. |
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* |
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* Copyright (C) 2001 Stefan Gmeiner <[email protected]> |
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* start merging tpconfig and gpm code to a xfree-input module |
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* adding some changes and extensions (ex. 3rd and 4th button) |
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* |
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* Copyright (c) 1997 C. Scott Ananian <[email protected]> |
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* Copyright (c) 1998-2000 Bruce Kalk <[email protected]> |
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* code for the special synaptics commands (from the tpconfig-source) |
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* |
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* Trademarks are the property of their respective owners. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/delay.h> |
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#include <linux/dmi.h> |
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#include <linux/input/mt.h> |
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#include <linux/serio.h> |
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#include <linux/libps2.h> |
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#include <linux/rmi.h> |
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#include <linux/i2c.h> |
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#include <linux/slab.h> |
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#include "psmouse.h" |
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#include "synaptics.h" |
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|
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/* |
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* The x/y limits are taken from the Synaptics TouchPad interfacing Guide, |
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* section 2.3.2, which says that they should be valid regardless of the |
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* actual size of the sensor. |
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* Note that newer firmware allows querying device for maximum useable |
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* coordinates. |
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*/ |
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#define XMIN 0 |
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#define XMAX 6143 |
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#define YMIN 0 |
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#define YMAX 6143 |
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#define XMIN_NOMINAL 1472 |
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#define XMAX_NOMINAL 5472 |
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#define YMIN_NOMINAL 1408 |
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#define YMAX_NOMINAL 4448 |
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|
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/* Size in bits of absolute position values reported by the hardware */ |
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#define ABS_POS_BITS 13 |
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|
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/* |
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* These values should represent the absolute maximum value that will |
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* be reported for a positive position value. Some Synaptics firmware |
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* uses this value to indicate a finger near the edge of the touchpad |
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* whose precise position cannot be determined. |
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* |
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* At least one touchpad is known to report positions in excess of this |
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* value which are actually negative values truncated to the 13-bit |
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* reporting range. These values have never been observed to be lower |
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* than 8184 (i.e. -8), so we treat all values greater than 8176 as |
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* negative and any other value as positive. |
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*/ |
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#define X_MAX_POSITIVE 8176 |
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#define Y_MAX_POSITIVE 8176 |
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|
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/* maximum ABS_MT_POSITION displacement (in mm) */ |
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#define DMAX 10 |
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|
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/***************************************************************************** |
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* Stuff we need even when we do not want native Synaptics support |
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****************************************************************************/ |
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|
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/* |
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* Set the synaptics touchpad mode byte by special commands |
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*/ |
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static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode) |
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{ |
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u8 param[1]; |
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int error; |
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error = ps2_sliced_command(&psmouse->ps2dev, mode); |
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if (error) |
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return error; |
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param[0] = SYN_PS_SET_MODE2; |
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error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); |
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if (error) |
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return error; |
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|
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return 0; |
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} |
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int synaptics_detect(struct psmouse *psmouse, bool set_properties) |
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{ |
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struct ps2dev *ps2dev = &psmouse->ps2dev; |
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u8 param[4] = { 0 }; |
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|
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); |
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); |
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); |
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); |
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ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); |
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|
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if (param[1] != 0x47) |
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return -ENODEV; |
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|
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if (set_properties) { |
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psmouse->vendor = "Synaptics"; |
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psmouse->name = "TouchPad"; |
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} |
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|
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return 0; |
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} |
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void synaptics_reset(struct psmouse *psmouse) |
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{ |
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/* reset touchpad back to relative mode, gestures enabled */ |
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synaptics_mode_cmd(psmouse, 0); |
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} |
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|
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#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ |
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defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS) |
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|
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/* This list has been kindly provided by Synaptics. */ |
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static const char * const topbuttonpad_pnp_ids[] = { |
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"LEN0017", |
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"LEN0018", |
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"LEN0019", |
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"LEN0023", |
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"LEN002A", |
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"LEN002B", |
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"LEN002C", |
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"LEN002D", |
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"LEN002E", |
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"LEN0033", /* Helix */ |
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"LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ |
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"LEN0035", /* X240 */ |
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"LEN0036", /* T440 */ |
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"LEN0037", /* X1 Carbon 2nd */ |
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"LEN0038", |
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"LEN0039", /* T440s */ |
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"LEN0041", |
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"LEN0042", /* Yoga */ |
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"LEN0045", |
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"LEN0047", |
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"LEN2000", /* S540 */ |
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"LEN2001", /* Edge E431 */ |
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"LEN2002", /* Edge E531 */ |
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"LEN2003", |
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"LEN2004", /* L440 */ |
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"LEN2005", |
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"LEN2006", /* Edge E440/E540 */ |
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"LEN2007", |
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"LEN2008", |
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"LEN2009", |
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"LEN200A", |
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"LEN200B", |
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NULL |
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}; |
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|
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static const char * const smbus_pnp_ids[] = { |
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/* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ |
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"LEN0048", /* X1 Carbon 3 */ |
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"LEN0046", /* X250 */ |
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"LEN0049", /* Yoga 11e */ |
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"LEN004a", /* W541 */ |
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"LEN005b", /* P50 */ |
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"LEN005e", /* T560 */ |
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"LEN006c", /* T470s */ |
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"LEN007a", /* T470s */ |
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"LEN0071", /* T480 */ |
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"LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */ |
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"LEN0073", /* X1 Carbon G5 (Elantech) */ |
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"LEN0091", /* X1 Carbon 6 */ |
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"LEN0092", /* X1 Carbon 6 */ |
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"LEN0093", /* T480 */ |
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"LEN0096", /* X280 */ |
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"LEN0097", /* X280 -> ALPS trackpoint */ |
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"LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */ |
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"LEN009b", /* T580 */ |
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"LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */ |
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"LEN200f", /* T450s */ |
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"LEN2044", /* L470 */ |
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"LEN2054", /* E480 */ |
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"LEN2055", /* E580 */ |
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"LEN2068", /* T14 Gen 1 */ |
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"SYN3052", /* HP EliteBook 840 G4 */ |
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"SYN3221", /* HP 15-ay000 */ |
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"SYN323d", /* HP Spectre X360 13-w013dx */ |
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"SYN3257", /* HP Envy 13-ad105ng */ |
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NULL |
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}; |
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|
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static const char * const forcepad_pnp_ids[] = { |
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"SYN300D", |
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"SYN3014", |
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NULL |
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}; |
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|
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/* |
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* Send a command to the synaptics touchpad by special commands |
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*/ |
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static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param) |
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{ |
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int error; |
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|
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error = ps2_sliced_command(&psmouse->ps2dev, cmd); |
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if (error) |
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return error; |
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error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); |
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if (error) |
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return error; |
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return 0; |
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} |
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|
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static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val) |
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{ |
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int error; |
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union { |
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__be32 be_val; |
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char buf[4]; |
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} resp = { 0 }; |
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error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); |
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if (error) |
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return error; |
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*val = be32_to_cpu(resp.be_val); |
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return 0; |
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} |
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|
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/* |
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* Identify Touchpad |
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* See also the SYN_ID_* macros |
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*/ |
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static int synaptics_identify(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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int error; |
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|
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error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); |
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if (error) |
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return error; |
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|
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return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO; |
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} |
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|
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/* |
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* Read the model-id bytes from the touchpad |
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* see also SYN_MODEL_* macros |
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*/ |
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static int synaptics_model_id(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id); |
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} |
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|
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/* |
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* Read the firmware id from the touchpad |
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*/ |
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static int synaptics_firmware_id(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, |
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&info->firmware_id); |
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} |
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|
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/* |
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* Read the board id and the "More Extended Queries" from the touchpad |
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* The board id is encoded in the "QUERY MODES" response |
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*/ |
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static int synaptics_query_modes(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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u8 bid[3]; |
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int error; |
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|
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/* firmwares prior 7.5 have no board_id encoded */ |
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if (SYN_ID_FULL(info->identity) < 0x705) |
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return 0; |
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error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); |
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if (error) |
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return error; |
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info->board_id = ((bid[0] & 0xfc) << 6) | bid[1]; |
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|
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if (SYN_MEXT_CAP_BIT(bid[0])) |
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return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, |
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&info->ext_cap_10); |
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|
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return 0; |
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} |
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|
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/* |
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* Read the capability-bits from the touchpad |
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* see also the SYN_CAP_* macros |
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*/ |
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static int synaptics_capability(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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int error; |
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error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, |
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&info->capabilities); |
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if (error) |
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return error; |
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|
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info->ext_cap = info->ext_cap_0c = 0; |
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|
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/* |
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* Older firmwares had submodel ID fixed to 0x47 |
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*/ |
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if (SYN_ID_FULL(info->identity) < 0x705 && |
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SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { |
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return -ENXIO; |
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} |
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|
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/* |
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* Unless capExtended is set the rest of the flags should be ignored |
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*/ |
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if (!SYN_CAP_EXTENDED(info->capabilities)) |
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info->capabilities = 0; |
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|
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if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { |
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error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, |
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&info->ext_cap); |
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if (error) { |
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psmouse_warn(psmouse, |
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"device claims to have extended capabilities, but I'm not able to read them.\n"); |
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} else { |
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/* |
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* if nExtBtn is greater than 8 it should be considered |
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* invalid and treated as 0 |
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*/ |
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if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) |
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info->ext_cap &= ~SYN_CAP_MB_MASK; |
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} |
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} |
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if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { |
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error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, |
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&info->ext_cap_0c); |
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if (error) |
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psmouse_warn(psmouse, |
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"device claims to have extended capability 0x0c, but I'm not able to read it.\n"); |
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} |
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|
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return 0; |
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} |
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|
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/* |
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* Read touchpad resolution and maximum reported coordinates |
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* Resolution is left zero if touchpad does not support the query |
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*/ |
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static int synaptics_resolution(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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u8 resp[3]; |
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int error; |
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|
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if (SYN_ID_MAJOR(info->identity) < 4) |
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return 0; |
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|
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error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); |
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if (!error) { |
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if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { |
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info->x_res = resp[0]; /* x resolution in units/mm */ |
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info->y_res = resp[2]; /* y resolution in units/mm */ |
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} |
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} |
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if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && |
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SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { |
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error = synaptics_send_cmd(psmouse, |
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SYN_QUE_EXT_MAX_COORDS, resp); |
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if (error) { |
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psmouse_warn(psmouse, |
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"device claims to have max coordinates query, but I'm not able to read it.\n"); |
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} else { |
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info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); |
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info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); |
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psmouse_info(psmouse, |
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"queried max coordinates: x [..%d], y [..%d]\n", |
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info->x_max, info->y_max); |
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} |
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} |
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|
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if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && |
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(SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || |
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/* |
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* Firmware v8.1 does not report proper number of extended |
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* capabilities, but has been proven to report correct min |
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* coordinates. |
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*/ |
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SYN_ID_FULL(info->identity) == 0x801)) { |
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error = synaptics_send_cmd(psmouse, |
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SYN_QUE_EXT_MIN_COORDS, resp); |
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if (error) { |
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psmouse_warn(psmouse, |
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"device claims to have min coordinates query, but I'm not able to read it.\n"); |
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} else { |
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info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); |
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info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); |
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psmouse_info(psmouse, |
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"queried min coordinates: x [%d..], y [%d..]\n", |
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info->x_min, info->y_min); |
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} |
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} |
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|
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return 0; |
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} |
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|
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static int synaptics_query_hardware(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
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{ |
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int error; |
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|
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memset(info, 0, sizeof(*info)); |
|
|
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error = synaptics_identify(psmouse, info); |
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if (error) |
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return error; |
|
|
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error = synaptics_model_id(psmouse, info); |
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if (error) |
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return error; |
|
|
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error = synaptics_firmware_id(psmouse, info); |
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if (error) |
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return error; |
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|
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error = synaptics_query_modes(psmouse, info); |
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if (error) |
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return error; |
|
|
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error = synaptics_capability(psmouse, info); |
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if (error) |
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return error; |
|
|
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error = synaptics_resolution(psmouse, info); |
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if (error) |
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return error; |
|
|
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return 0; |
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} |
|
|
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#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */ |
|
|
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#ifdef CONFIG_MOUSE_PS2_SYNAPTICS |
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|
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static bool cr48_profile_sensor; |
|
|
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#define ANY_BOARD_ID 0 |
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struct min_max_quirk { |
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const char * const *pnp_ids; |
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struct { |
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u32 min, max; |
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} board_id; |
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u32 x_min, x_max, y_min, y_max; |
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}; |
|
|
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static const struct min_max_quirk min_max_pnpid_table[] = { |
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{ |
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(const char * const []){"LEN0033", NULL}, |
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{ANY_BOARD_ID, ANY_BOARD_ID}, |
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1024, 5052, 2258, 4832 |
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}, |
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{ |
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(const char * const []){"LEN0042", NULL}, |
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{ANY_BOARD_ID, ANY_BOARD_ID}, |
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1232, 5710, 1156, 4696 |
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}, |
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{ |
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(const char * const []){"LEN0034", "LEN0036", "LEN0037", |
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"LEN0039", "LEN2002", "LEN2004", |
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NULL}, |
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{ANY_BOARD_ID, 2961}, |
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1024, 5112, 2024, 4832 |
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}, |
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{ |
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(const char * const []){"LEN2000", NULL}, |
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{ANY_BOARD_ID, ANY_BOARD_ID}, |
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1024, 5113, 2021, 4832 |
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}, |
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{ |
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(const char * const []){"LEN2001", NULL}, |
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{ANY_BOARD_ID, ANY_BOARD_ID}, |
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1024, 5022, 2508, 4832 |
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}, |
|
{ |
|
(const char * const []){"LEN2006", NULL}, |
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{2691, 2691}, |
|
1024, 5045, 2457, 4832 |
|
}, |
|
{ |
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(const char * const []){"LEN2006", NULL}, |
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{ANY_BOARD_ID, ANY_BOARD_ID}, |
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1264, 5675, 1171, 4688 |
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}, |
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{ } |
|
}; |
|
|
|
/***************************************************************************** |
|
* 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. |
|
*/ |
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static int synaptics_invert_y(int y) |
|
{ |
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return YMAX_NOMINAL + YMIN_NOMINAL - y; |
|
} |
|
|
|
/* |
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* Apply quirk(s) if the hardware matches |
|
*/ |
|
static void synaptics_apply_quirks(struct psmouse *psmouse, |
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struct synaptics_device_info *info) |
|
{ |
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int i; |
|
|
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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) |
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continue; |
|
|
|
if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && |
|
info->board_id > min_max_pnpid_table[i].board_id.max) |
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continue; |
|
|
|
info->x_min = min_max_pnpid_table[i].x_min; |
|
info->x_max = min_max_pnpid_table[i].x_max; |
|
info->y_min = min_max_pnpid_table[i].y_min; |
|
info->y_max = min_max_pnpid_table[i].y_max; |
|
psmouse_info(psmouse, |
|
"quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", |
|
info->x_min, info->x_max, |
|
info->y_min, info->y_max); |
|
break; |
|
} |
|
} |
|
|
|
static bool synaptics_has_agm(struct synaptics_data *priv) |
|
{ |
|
return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || |
|
SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c)); |
|
} |
|
|
|
static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) |
|
{ |
|
static u8 param = 0xc8; |
|
int error; |
|
|
|
error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); |
|
if (error) |
|
return error; |
|
|
|
error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); |
|
if (error) |
|
return error; |
|
|
|
return 0; |
|
} |
|
|
|
static int synaptics_set_mode(struct psmouse *psmouse) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
int error; |
|
|
|
priv->mode = 0; |
|
if (priv->absolute_mode) |
|
priv->mode |= SYN_BIT_ABSOLUTE_MODE; |
|
if (priv->disable_gesture) |
|
priv->mode |= SYN_BIT_DISABLE_GESTURE; |
|
if (psmouse->rate >= 80) |
|
priv->mode |= SYN_BIT_HIGH_RATE; |
|
if (SYN_CAP_EXTENDED(priv->info.capabilities)) |
|
priv->mode |= SYN_BIT_W_MODE; |
|
|
|
error = synaptics_mode_cmd(psmouse, priv->mode); |
|
if (error) |
|
return error; |
|
|
|
if (priv->absolute_mode && synaptics_has_agm(priv)) { |
|
error = synaptics_set_advanced_gesture_mode(psmouse); |
|
if (error) { |
|
psmouse_err(psmouse, |
|
"Advanced gesture mode init failed: %d\n", |
|
error); |
|
return error; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
|
|
if (rate >= 80) { |
|
priv->mode |= SYN_BIT_HIGH_RATE; |
|
psmouse->rate = 80; |
|
} else { |
|
priv->mode &= ~SYN_BIT_HIGH_RATE; |
|
psmouse->rate = 40; |
|
} |
|
|
|
synaptics_mode_cmd(psmouse, priv->mode); |
|
} |
|
|
|
/***************************************************************************** |
|
* Synaptics pass-through PS/2 port support |
|
****************************************************************************/ |
|
static int synaptics_pt_write(struct serio *serio, u8 c) |
|
{ |
|
struct psmouse *parent = serio_get_drvdata(serio->parent); |
|
u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ |
|
int error; |
|
|
|
error = ps2_sliced_command(&parent->ps2dev, c); |
|
if (error) |
|
return error; |
|
|
|
error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); |
|
if (error) |
|
return error; |
|
|
|
return 0; |
|
} |
|
|
|
static int synaptics_pt_start(struct serio *serio) |
|
{ |
|
struct psmouse *parent = serio_get_drvdata(serio->parent); |
|
struct synaptics_data *priv = parent->private; |
|
|
|
serio_pause_rx(parent->ps2dev.serio); |
|
priv->pt_port = serio; |
|
serio_continue_rx(parent->ps2dev.serio); |
|
|
|
return 0; |
|
} |
|
|
|
static void synaptics_pt_stop(struct serio *serio) |
|
{ |
|
struct psmouse *parent = serio_get_drvdata(serio->parent); |
|
struct synaptics_data *priv = parent->private; |
|
|
|
serio_pause_rx(parent->ps2dev.serio); |
|
priv->pt_port = NULL; |
|
serio_continue_rx(parent->ps2dev.serio); |
|
} |
|
|
|
static int synaptics_is_pt_packet(u8 *buf) |
|
{ |
|
return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; |
|
} |
|
|
|
static void synaptics_pass_pt_packet(struct serio *ptport, u8 *packet) |
|
{ |
|
struct psmouse *child = serio_get_drvdata(ptport); |
|
|
|
if (child && child->state == PSMOUSE_ACTIVATED) { |
|
serio_interrupt(ptport, packet[1], 0); |
|
serio_interrupt(ptport, packet[4], 0); |
|
serio_interrupt(ptport, packet[5], 0); |
|
if (child->pktsize == 4) |
|
serio_interrupt(ptport, packet[2], 0); |
|
} else { |
|
serio_interrupt(ptport, packet[1], 0); |
|
} |
|
} |
|
|
|
static void synaptics_pt_activate(struct psmouse *psmouse) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
struct psmouse *child = serio_get_drvdata(priv->pt_port); |
|
|
|
/* adjust the touchpad to child's choice of protocol */ |
|
if (child) { |
|
if (child->pktsize == 4) |
|
priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; |
|
else |
|
priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT; |
|
|
|
if (synaptics_mode_cmd(psmouse, priv->mode)) |
|
psmouse_warn(psmouse, |
|
"failed to switch guest protocol\n"); |
|
} |
|
} |
|
|
|
static void synaptics_pt_create(struct psmouse *psmouse) |
|
{ |
|
struct serio *serio; |
|
|
|
serio = kzalloc(sizeof(struct serio), GFP_KERNEL); |
|
if (!serio) { |
|
psmouse_err(psmouse, |
|
"not enough memory for pass-through port\n"); |
|
return; |
|
} |
|
|
|
serio->id.type = SERIO_PS_PSTHRU; |
|
strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); |
|
strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys)); |
|
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: |
|
/* |
|
* 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); |
|
|
|
if (num_fingers > 0) { |
|
input_report_abs(dev, ABS_X, hw.x); |
|
input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); |
|
} |
|
input_report_abs(dev, ABS_PRESSURE, hw.z); |
|
|
|
if (SYN_CAP_PALMDETECT(info->capabilities)) |
|
input_report_abs(dev, ABS_TOOL_WIDTH, finger_width); |
|
|
|
input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); |
|
if (synaptics_has_multifinger(priv)) { |
|
input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); |
|
input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); |
|
} |
|
|
|
synaptics_report_buttons(psmouse, &hw); |
|
|
|
input_sync(dev); |
|
} |
|
|
|
static bool synaptics_validate_byte(struct psmouse *psmouse, |
|
int idx, enum synaptics_pkt_type pkt_type) |
|
{ |
|
static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; |
|
static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; |
|
static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; |
|
static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; |
|
static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; |
|
const u8 *packet = psmouse->packet; |
|
|
|
if (idx < 0 || idx > 4) |
|
return false; |
|
|
|
switch (pkt_type) { |
|
|
|
case SYN_NEWABS: |
|
case SYN_NEWABS_RELAXED: |
|
return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx]; |
|
|
|
case SYN_NEWABS_STRICT: |
|
return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx]; |
|
|
|
case SYN_OLDABS: |
|
return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx]; |
|
|
|
default: |
|
psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); |
|
return false; |
|
} |
|
} |
|
|
|
static enum synaptics_pkt_type |
|
synaptics_detect_pkt_type(struct psmouse *psmouse) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < 5; i++) { |
|
if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { |
|
psmouse_info(psmouse, "using relaxed packet validation\n"); |
|
return SYN_NEWABS_RELAXED; |
|
} |
|
} |
|
|
|
return SYN_NEWABS_STRICT; |
|
} |
|
|
|
static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
|
|
if (psmouse->pktcnt >= 6) { /* Full packet received */ |
|
if (unlikely(priv->pkt_type == SYN_NEWABS)) |
|
priv->pkt_type = synaptics_detect_pkt_type(psmouse); |
|
|
|
if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && |
|
synaptics_is_pt_packet(psmouse->packet)) { |
|
if (priv->pt_port) |
|
synaptics_pass_pt_packet(priv->pt_port, |
|
psmouse->packet); |
|
} else |
|
synaptics_process_packet(psmouse); |
|
|
|
return PSMOUSE_FULL_PACKET; |
|
} |
|
|
|
return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? |
|
PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; |
|
} |
|
|
|
/***************************************************************************** |
|
* Driver initialization/cleanup functions |
|
****************************************************************************/ |
|
static void set_abs_position_params(struct input_dev *dev, |
|
struct synaptics_device_info *info, |
|
int x_code, int y_code) |
|
{ |
|
int x_min = info->x_min ?: XMIN_NOMINAL; |
|
int x_max = info->x_max ?: XMAX_NOMINAL; |
|
int y_min = info->y_min ?: YMIN_NOMINAL; |
|
int y_max = info->y_max ?: YMAX_NOMINAL; |
|
int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? |
|
SYN_REDUCED_FILTER_FUZZ : 0; |
|
|
|
input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); |
|
input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); |
|
input_abs_set_res(dev, x_code, info->x_res); |
|
input_abs_set_res(dev, y_code, info->y_res); |
|
} |
|
|
|
static int set_input_params(struct psmouse *psmouse, |
|
struct synaptics_data *priv) |
|
{ |
|
struct input_dev *dev = psmouse->dev; |
|
struct synaptics_device_info *info = &priv->info; |
|
int i; |
|
int error; |
|
|
|
/* Reset default psmouse capabilities */ |
|
__clear_bit(EV_REL, dev->evbit); |
|
bitmap_zero(dev->relbit, REL_CNT); |
|
bitmap_zero(dev->keybit, KEY_CNT); |
|
|
|
/* Things that apply to both modes */ |
|
__set_bit(INPUT_PROP_POINTER, dev->propbit); |
|
|
|
input_set_capability(dev, EV_KEY, BTN_LEFT); |
|
|
|
/* Clickpads report only left button */ |
|
if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { |
|
input_set_capability(dev, EV_KEY, BTN_RIGHT); |
|
if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) |
|
input_set_capability(dev, EV_KEY, BTN_MIDDLE); |
|
} |
|
|
|
if (!priv->absolute_mode) { |
|
/* Relative mode */ |
|
input_set_capability(dev, EV_REL, REL_X); |
|
input_set_capability(dev, EV_REL, REL_Y); |
|
return 0; |
|
} |
|
|
|
/* Absolute mode */ |
|
set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); |
|
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); |
|
|
|
if (cr48_profile_sensor) |
|
input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); |
|
|
|
if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { |
|
set_abs_position_params(dev, info, |
|
ABS_MT_POSITION_X, ABS_MT_POSITION_Y); |
|
/* Image sensors can report per-contact pressure */ |
|
input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); |
|
|
|
error = input_mt_init_slots(dev, 2, |
|
INPUT_MT_POINTER | INPUT_MT_TRACK); |
|
if (error) |
|
return error; |
|
|
|
/* Image sensors can signal 4 and 5 finger clicks */ |
|
input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); |
|
input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); |
|
} else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { |
|
set_abs_position_params(dev, info, |
|
ABS_MT_POSITION_X, ABS_MT_POSITION_Y); |
|
/* |
|
* Profile sensor in CR-48 tracks contacts reasonably well, |
|
* other non-image sensors with AGM use semi-mt. |
|
*/ |
|
error = input_mt_init_slots(dev, 2, |
|
INPUT_MT_POINTER | |
|
(cr48_profile_sensor ? |
|
INPUT_MT_TRACK : |
|
INPUT_MT_SEMI_MT)); |
|
if (error) |
|
return error; |
|
|
|
/* |
|
* For semi-mt devices we send ABS_X/Y ourselves instead of |
|
* input_mt_report_pointer_emulation. But |
|
* input_mt_init_slots() resets the fuzz to 0, leading to a |
|
* filtered ABS_MT_POSITION_X but an unfiltered ABS_X |
|
* position. Let's re-initialize ABS_X/Y here. |
|
*/ |
|
if (!cr48_profile_sensor) |
|
set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); |
|
} |
|
|
|
if (SYN_CAP_PALMDETECT(info->capabilities)) |
|
input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0); |
|
|
|
input_set_capability(dev, EV_KEY, BTN_TOUCH); |
|
input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER); |
|
|
|
if (synaptics_has_multifinger(priv)) { |
|
input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); |
|
input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); |
|
} |
|
|
|
if (SYN_CAP_FOUR_BUTTON(info->capabilities) || |
|
SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { |
|
input_set_capability(dev, EV_KEY, BTN_FORWARD); |
|
input_set_capability(dev, EV_KEY, BTN_BACK); |
|
} |
|
|
|
if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) |
|
for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) |
|
input_set_capability(dev, EV_KEY, BTN_0 + i); |
|
|
|
if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { |
|
__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); |
|
if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && |
|
!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) |
|
__set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, |
|
void *data, char *buf) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
|
|
return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0'); |
|
} |
|
|
|
static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, |
|
void *data, const char *buf, |
|
size_t len) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
unsigned int value; |
|
int err; |
|
|
|
err = kstrtouint(buf, 10, &value); |
|
if (err) |
|
return err; |
|
|
|
if (value > 1) |
|
return -EINVAL; |
|
|
|
if (value == priv->disable_gesture) |
|
return len; |
|
|
|
priv->disable_gesture = value; |
|
if (value) |
|
priv->mode |= SYN_BIT_DISABLE_GESTURE; |
|
else |
|
priv->mode &= ~SYN_BIT_DISABLE_GESTURE; |
|
|
|
if (synaptics_mode_cmd(psmouse, priv->mode)) |
|
return -EIO; |
|
|
|
return len; |
|
} |
|
|
|
PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, |
|
synaptics_show_disable_gesture, |
|
synaptics_set_disable_gesture); |
|
|
|
static void synaptics_disconnect(struct psmouse *psmouse) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
|
|
/* |
|
* We might have left a breadcrumb when trying to |
|
* set up SMbus companion. |
|
*/ |
|
psmouse_smbus_cleanup(psmouse); |
|
|
|
if (!priv->absolute_mode && |
|
SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) |
|
device_remove_file(&psmouse->ps2dev.serio->dev, |
|
&psmouse_attr_disable_gesture.dattr); |
|
|
|
synaptics_reset(psmouse); |
|
kfree(priv); |
|
psmouse->private = NULL; |
|
} |
|
|
|
static int synaptics_reconnect(struct psmouse *psmouse) |
|
{ |
|
struct synaptics_data *priv = psmouse->private; |
|
struct synaptics_device_info info; |
|
u8 param[2]; |
|
int retry = 0; |
|
int error; |
|
|
|
do { |
|
psmouse_reset(psmouse); |
|
if (retry) { |
|
/* |
|
* On some boxes, right after resuming, the touchpad |
|
* needs some time to finish initializing (I assume |
|
* it needs time to calibrate) and start responding |
|
* to Synaptics-specific queries, so let's wait a |
|
* bit. |
|
*/ |
|
ssleep(1); |
|
} |
|
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); |
|
error = synaptics_detect(psmouse, 0); |
|
} while (error && ++retry < 3); |
|
|
|
if (error) |
|
return error; |
|
|
|
if (retry > 1) |
|
psmouse_dbg(psmouse, "reconnected after %d tries\n", retry); |
|
|
|
error = synaptics_query_hardware(psmouse, &info); |
|
if (error) { |
|
psmouse_err(psmouse, "Unable to query device.\n"); |
|
return error; |
|
} |
|
|
|
error = synaptics_set_mode(psmouse); |
|
if (error) { |
|
psmouse_err(psmouse, "Unable to initialize device.\n"); |
|
return error; |
|
} |
|
|
|
if (info.identity != priv->info.identity || |
|
info.model_id != priv->info.model_id || |
|
info.capabilities != priv->info.capabilities || |
|
info.ext_cap != priv->info.ext_cap) { |
|
psmouse_err(psmouse, |
|
"hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", |
|
priv->info.identity, info.identity, |
|
priv->info.model_id, info.model_id, |
|
priv->info.capabilities, info.capabilities, |
|
priv->info.ext_cap, info.ext_cap); |
|
return -ENXIO; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static bool impaired_toshiba_kbc; |
|
|
|
static const struct dmi_system_id toshiba_dmi_table[] __initconst = { |
|
#if defined(CONFIG_DMI) && defined(CONFIG_X86) |
|
{ |
|
/* Toshiba Satellite */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
|
}, |
|
}, |
|
{ |
|
/* Toshiba Dynabook */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), |
|
}, |
|
}, |
|
{ |
|
/* Toshiba Portege M300 */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), |
|
}, |
|
|
|
}, |
|
{ |
|
/* Toshiba Portege M300 */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), |
|
DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), |
|
}, |
|
|
|
}, |
|
#endif |
|
{ } |
|
}; |
|
|
|
static bool broken_olpc_ec; |
|
|
|
static const struct dmi_system_id olpc_dmi_table[] __initconst = { |
|
#if defined(CONFIG_DMI) && defined(CONFIG_OLPC) |
|
{ |
|
/* OLPC XO-1 or XO-1.5 */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "XO"), |
|
}, |
|
}, |
|
#endif |
|
{ } |
|
}; |
|
|
|
static const struct dmi_system_id __initconst cr48_dmi_table[] = { |
|
#if defined(CONFIG_DMI) && defined(CONFIG_X86) |
|
{ |
|
/* Cr-48 Chromebook (Codename Mario) */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "IEC"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), |
|
}, |
|
}, |
|
#endif |
|
{ } |
|
}; |
|
|
|
void __init synaptics_module_init(void) |
|
{ |
|
impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); |
|
broken_olpc_ec = dmi_check_system(olpc_dmi_table); |
|
cr48_profile_sensor = dmi_check_system(cr48_dmi_table); |
|
} |
|
|
|
static int synaptics_init_ps2(struct psmouse *psmouse, |
|
struct synaptics_device_info *info, |
|
bool absolute_mode) |
|
{ |
|
struct synaptics_data *priv; |
|
int err; |
|
|
|
synaptics_apply_quirks(psmouse, info); |
|
|
|
psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL); |
|
if (!priv) |
|
return -ENOMEM; |
|
|
|
priv->info = *info; |
|
priv->absolute_mode = absolute_mode; |
|
if (SYN_ID_DISGEST_SUPPORTED(info->identity)) |
|
priv->disable_gesture = true; |
|
|
|
/* |
|
* Unfortunately ForcePad capability is not exported over PS/2, |
|
* so we have to resort to checking PNP IDs. |
|
*/ |
|
priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids); |
|
|
|
err = synaptics_set_mode(psmouse); |
|
if (err) { |
|
psmouse_err(psmouse, "Unable to initialize device.\n"); |
|
goto init_fail; |
|
} |
|
|
|
priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? |
|
SYN_NEWABS : SYN_OLDABS; |
|
|
|
psmouse_info(psmouse, |
|
"Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", |
|
SYN_ID_MODEL(info->identity), |
|
SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), |
|
info->model_id, |
|
info->capabilities, info->ext_cap, info->ext_cap_0c, |
|
info->ext_cap_10, info->board_id, info->firmware_id); |
|
|
|
err = set_input_params(psmouse, priv); |
|
if (err) { |
|
psmouse_err(psmouse, |
|
"failed to set up capabilities: %d\n", err); |
|
goto init_fail; |
|
} |
|
|
|
/* |
|
* Encode touchpad model so that it can be used to set |
|
* input device->id.version and be visible to userspace. |
|
* Because version is __u16 we have to drop something. |
|
* Hardware info bits seem to be good candidates as they |
|
* are documented to be for Synaptics corp. internal use. |
|
*/ |
|
psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | |
|
(info->model_id & 0x000000ff); |
|
|
|
if (absolute_mode) { |
|
psmouse->protocol_handler = synaptics_process_byte; |
|
psmouse->pktsize = 6; |
|
} else { |
|
/* Relative mode follows standard PS/2 mouse protocol */ |
|
psmouse->protocol_handler = psmouse_process_byte; |
|
psmouse->pktsize = 3; |
|
} |
|
|
|
psmouse->set_rate = synaptics_set_rate; |
|
psmouse->disconnect = synaptics_disconnect; |
|
psmouse->reconnect = synaptics_reconnect; |
|
psmouse->cleanup = synaptics_reset; |
|
/* Synaptics can usually stay in sync without extra help */ |
|
psmouse->resync_time = 0; |
|
|
|
if (SYN_CAP_PASS_THROUGH(info->capabilities)) |
|
synaptics_pt_create(psmouse); |
|
|
|
/* |
|
* Toshiba's KBC seems to have trouble handling data from |
|
* Synaptics at full rate. Switch to a lower rate (roughly |
|
* the same rate as a standard PS/2 mouse). |
|
*/ |
|
if (psmouse->rate >= 80 && impaired_toshiba_kbc) { |
|
psmouse_info(psmouse, |
|
"Toshiba %s detected, limiting rate to 40pps.\n", |
|
dmi_get_system_info(DMI_PRODUCT_NAME)); |
|
psmouse->rate = 40; |
|
} |
|
|
|
if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { |
|
err = device_create_file(&psmouse->ps2dev.serio->dev, |
|
&psmouse_attr_disable_gesture.dattr); |
|
if (err) { |
|
psmouse_err(psmouse, |
|
"Failed to create disable_gesture attribute (%d)", |
|
err); |
|
goto init_fail; |
|
} |
|
} |
|
|
|
return 0; |
|
|
|
init_fail: |
|
kfree(priv); |
|
return err; |
|
} |
|
|
|
static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) |
|
{ |
|
struct synaptics_device_info info; |
|
int error; |
|
|
|
psmouse_reset(psmouse); |
|
|
|
error = synaptics_query_hardware(psmouse, &info); |
|
if (error) { |
|
psmouse_err(psmouse, "Unable to query device: %d\n", error); |
|
return error; |
|
} |
|
|
|
return synaptics_init_ps2(psmouse, &info, absolute_mode); |
|
} |
|
|
|
int synaptics_init_absolute(struct psmouse *psmouse) |
|
{ |
|
return __synaptics_init(psmouse, true); |
|
} |
|
|
|
int synaptics_init_relative(struct psmouse *psmouse) |
|
{ |
|
return __synaptics_init(psmouse, false); |
|
} |
|
|
|
static int synaptics_setup_ps2(struct psmouse *psmouse, |
|
struct synaptics_device_info *info) |
|
{ |
|
bool absolute_mode = true; |
|
int error; |
|
|
|
/* |
|
* The OLPC XO has issues with Synaptics' absolute mode; the constant |
|
* packet spew overloads the EC such that key presses on the keyboard |
|
* are missed. Given that, don't even attempt to use Absolute mode. |
|
* Relative mode seems to work just fine. |
|
*/ |
|
if (broken_olpc_ec) { |
|
psmouse_info(psmouse, |
|
"OLPC XO detected, forcing relative protocol.\n"); |
|
absolute_mode = false; |
|
} |
|
|
|
error = synaptics_init_ps2(psmouse, info, absolute_mode); |
|
if (error) |
|
return error; |
|
|
|
return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE; |
|
} |
|
|
|
#else /* CONFIG_MOUSE_PS2_SYNAPTICS */ |
|
|
|
void __init synaptics_module_init(void) |
|
{ |
|
} |
|
|
|
static int __maybe_unused |
|
synaptics_setup_ps2(struct psmouse *psmouse, |
|
struct synaptics_device_info *info) |
|
{ |
|
return -ENOSYS; |
|
} |
|
|
|
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */ |
|
|
|
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS |
|
|
|
/* |
|
* The newest Synaptics device can use a secondary bus (called InterTouch) which |
|
* provides a better bandwidth and allow a better control of the touchpads. |
|
* This is used to decide if we need to use this bus or not. |
|
*/ |
|
enum { |
|
SYNAPTICS_INTERTOUCH_NOT_SET = -1, |
|
SYNAPTICS_INTERTOUCH_OFF, |
|
SYNAPTICS_INTERTOUCH_ON, |
|
}; |
|
|
|
static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? |
|
SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF; |
|
module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644); |
|
MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device."); |
|
|
|
static int synaptics_create_intertouch(struct psmouse *psmouse, |
|
struct synaptics_device_info *info, |
|
bool leave_breadcrumbs) |
|
{ |
|
bool topbuttonpad = |
|
psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && |
|
!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); |
|
const struct rmi_device_platform_data pdata = { |
|
.sensor_pdata = { |
|
.sensor_type = rmi_sensor_touchpad, |
|
.axis_align.flip_y = true, |
|
.kernel_tracking = false, |
|
.topbuttonpad = topbuttonpad, |
|
}, |
|
.gpio_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), true, |
|
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 [email protected].\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 */
|
|
|