11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * ALPS touchpad PS/2 mouse driver 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> 5963f626dSPeter Osterlund * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> 61da177e4SLinus Torvalds * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> 71da177e4SLinus Torvalds * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> 81d9f2626SSebastian Kapfer * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * ALPS detection, tap switching and status querying info is taken from 111da177e4SLinus Torvalds * tpconfig utility (by C. Scott Ananian and Bruce Kall). 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify it 141da177e4SLinus Torvalds * under the terms of the GNU General Public License version 2 as published by 151da177e4SLinus Torvalds * the Free Software Foundation. 161da177e4SLinus Torvalds */ 171da177e4SLinus Torvalds 185a0e3ad6STejun Heo #include <linux/slab.h> 191da177e4SLinus Torvalds #include <linux/input.h> 2001ce661fSSeth Forshee #include <linux/input/mt.h> 211da177e4SLinus Torvalds #include <linux/serio.h> 221da177e4SLinus Torvalds #include <linux/libps2.h> 23073e570dSHans de Goede #include <linux/dmi.h> 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #include "psmouse.h" 261da177e4SLinus Torvalds #include "alps.h" 271da177e4SLinus Torvalds 2825bded7cSSeth Forshee /* 2925bded7cSSeth Forshee * Definitions for ALPS version 3 and 4 command mode protocol 3025bded7cSSeth Forshee */ 3125bded7cSSeth Forshee #define ALPS_CMD_NIBBLE_10 0x01f2 3225bded7cSSeth Forshee 33cd401204SKevin Cernekee #define ALPS_REG_BASE_RUSHMORE 0xc2c0 34dae928ecSPali Rohár #define ALPS_REG_BASE_V7 0xc2c0 35cd401204SKevin Cernekee #define ALPS_REG_BASE_PINNACLE 0x0000 36cd401204SKevin Cernekee 3725bded7cSSeth Forshee static const struct alps_nibble_commands alps_v3_nibble_commands[] = { 3825bded7cSSeth Forshee { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ 3925bded7cSSeth Forshee { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 4025bded7cSSeth Forshee { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 4125bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 4225bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 4325bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 4425bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 4525bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 4625bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 4725bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 4825bded7cSSeth Forshee { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 4925bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 5025bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 5125bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 5225bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 5325bded7cSSeth Forshee { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 5425bded7cSSeth Forshee }; 5525bded7cSSeth Forshee 5625bded7cSSeth Forshee static const struct alps_nibble_commands alps_v4_nibble_commands[] = { 5725bded7cSSeth Forshee { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 5825bded7cSSeth Forshee { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ 5925bded7cSSeth Forshee { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ 6025bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ 6125bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ 6225bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ 6325bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ 6425bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ 6525bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ 6625bded7cSSeth Forshee { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ 6725bded7cSSeth Forshee { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ 6825bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ 6925bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ 7025bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ 7125bded7cSSeth Forshee { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ 7225bded7cSSeth Forshee { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 7325bded7cSSeth Forshee }; 7425bded7cSSeth Forshee 7595f75e91SYunkang Tang static const struct alps_nibble_commands alps_v6_nibble_commands[] = { 7695f75e91SYunkang Tang { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ 7795f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ 7895f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ 7995f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ 8095f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ 8195f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ 8295f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ 8395f75e91SYunkang Tang { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ 8495f75e91SYunkang Tang { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ 8595f75e91SYunkang Tang { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ 8695f75e91SYunkang Tang { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ 8795f75e91SYunkang Tang { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ 8895f75e91SYunkang Tang { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ 8995f75e91SYunkang Tang { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ 9095f75e91SYunkang Tang { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ 9195f75e91SYunkang Tang { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ 9295f75e91SYunkang Tang }; 9395f75e91SYunkang Tang 9425bded7cSSeth Forshee 9571bb21b6SMaxim Levitsky #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ 9671bb21b6SMaxim Levitsky #define ALPS_PASS 0x04 /* device has a pass-through port */ 9771bb21b6SMaxim Levitsky 9871bb21b6SMaxim Levitsky #define ALPS_WHEEL 0x08 /* hardware wheel present */ 9971bb21b6SMaxim Levitsky #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ 10071bb21b6SMaxim Levitsky #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ 10171bb21b6SMaxim Levitsky #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ 1021d9f2626SSebastian Kapfer #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with 1031d9f2626SSebastian Kapfer 6-byte ALPS packet */ 10419556219SHans de Goede #define ALPS_STICK_BITS 0x100 /* separate stick button bits */ 1053808843cSYunkang Tang #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ 1067ad8a106SBen Gamari #define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */ 1071da177e4SLinus Torvalds 108e38de678SHelge Deller static const struct alps_model_info alps_model_data[] = { 1098326bb57SDmitry Torokhov { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ 1108326bb57SDmitry Torokhov { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ 1118326bb57SDmitry Torokhov { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 1128326bb57SDmitry Torokhov { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 1138326bb57SDmitry Torokhov { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ 1148326bb57SDmitry Torokhov { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 1158326bb57SDmitry Torokhov { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 1168326bb57SDmitry Torokhov { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ 1178326bb57SDmitry Torokhov { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ 1188326bb57SDmitry Torokhov { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ 1198326bb57SDmitry Torokhov { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 1208326bb57SDmitry Torokhov { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ 1218326bb57SDmitry Torokhov { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ 1228326bb57SDmitry Torokhov { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, 1238326bb57SDmitry Torokhov { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ 124626b9da0SDmitry Torokhov 125626b9da0SDmitry Torokhov /* 126626b9da0SDmitry Torokhov * XXX This entry is suspicious. First byte has zero lower nibble, 127626b9da0SDmitry Torokhov * which is what a normal mouse would report. Also, the value 0x0e 128626b9da0SDmitry Torokhov * isn't valid per PS/2 spec. 129626b9da0SDmitry Torokhov */ 130626b9da0SDmitry Torokhov { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 131626b9da0SDmitry Torokhov 1328326bb57SDmitry Torokhov { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, 1338326bb57SDmitry Torokhov { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ 1341d9f2626SSebastian Kapfer /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ 1358326bb57SDmitry Torokhov { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, 1368326bb57SDmitry Torokhov ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, 1378326bb57SDmitry Torokhov { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ 1388326bb57SDmitry Torokhov { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ 1398326bb57SDmitry Torokhov { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, 1408326bb57SDmitry Torokhov ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ 1418326bb57SDmitry Torokhov { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, 1421da177e4SLinus Torvalds }; 1431da177e4SLinus Torvalds 1443296f71cSDmitry Torokhov static const struct alps_protocol_info alps_v3_protocol_data = { 1453296f71cSDmitry Torokhov ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT 1463296f71cSDmitry Torokhov }; 1473296f71cSDmitry Torokhov 1483296f71cSDmitry Torokhov static const struct alps_protocol_info alps_v3_rushmore_data = { 1493296f71cSDmitry Torokhov ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT 1503296f71cSDmitry Torokhov }; 1513296f71cSDmitry Torokhov 1523296f71cSDmitry Torokhov static const struct alps_protocol_info alps_v5_protocol_data = { 1533296f71cSDmitry Torokhov ALPS_PROTO_V5, 0xc8, 0xd8, 0 1543296f71cSDmitry Torokhov }; 1553296f71cSDmitry Torokhov 1563296f71cSDmitry Torokhov static const struct alps_protocol_info alps_v7_protocol_data = { 1573296f71cSDmitry Torokhov ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT 1583296f71cSDmitry Torokhov }; 1593296f71cSDmitry Torokhov 1603db5b9f7SMasaki Ota static const struct alps_protocol_info alps_v8_protocol_data = { 1613db5b9f7SMasaki Ota ALPS_PROTO_V8, 0x18, 0x18, 0 1623db5b9f7SMasaki Ota }; 1633db5b9f7SMasaki Ota 16419556219SHans de Goede /* 16519556219SHans de Goede * Some v2 models report the stick buttons in separate bits 16619556219SHans de Goede */ 16719556219SHans de Goede static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = { 16819556219SHans de Goede #if defined(CONFIG_DMI) && defined(CONFIG_X86) 16919556219SHans de Goede { 17019556219SHans de Goede /* Extrapolated from other entries */ 17119556219SHans de Goede .matches = { 17219556219SHans de Goede DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 17319556219SHans de Goede DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"), 17419556219SHans de Goede }, 17519556219SHans de Goede }, 17619556219SHans de Goede { 17719556219SHans de Goede /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */ 17819556219SHans de Goede .matches = { 17919556219SHans de Goede DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 18019556219SHans de Goede DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"), 18119556219SHans de Goede }, 18219556219SHans de Goede }, 18319556219SHans de Goede { 18419556219SHans de Goede /* Reported-by: Hans de Goede <hdegoede@redhat.com> */ 18519556219SHans de Goede .matches = { 18619556219SHans de Goede DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 18719556219SHans de Goede DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"), 18819556219SHans de Goede }, 18919556219SHans de Goede }, 19019556219SHans de Goede { 19119556219SHans de Goede /* Extrapolated from other entries */ 19219556219SHans de Goede .matches = { 19319556219SHans de Goede DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 19419556219SHans de Goede DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"), 19519556219SHans de Goede }, 19619556219SHans de Goede }, 19719556219SHans de Goede #endif 19819556219SHans de Goede { } 19919556219SHans de Goede }; 20019556219SHans de Goede 20124af5cb9SKevin Cernekee static void alps_set_abs_params_st(struct alps_data *priv, 20224af5cb9SKevin Cernekee struct input_dev *dev1); 203688ea364SHans de Goede static void alps_set_abs_params_semi_mt(struct alps_data *priv, 20424af5cb9SKevin Cernekee struct input_dev *dev1); 2058eccd393SMasaki Ota static void alps_set_abs_params_v7(struct alps_data *priv, 2068eccd393SMasaki Ota struct input_dev *dev1); 2073db5b9f7SMasaki Ota static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 2083db5b9f7SMasaki Ota struct input_dev *dev1); 20924af5cb9SKevin Cernekee 210d4b347b2SSeth Forshee /* Packet formats are described in Documentation/input/alps.txt */ 2111da177e4SLinus Torvalds 21299df65e7SKevin Cernekee static bool alps_is_valid_first_byte(struct alps_data *priv, 2131d9f2626SSebastian Kapfer unsigned char data) 2141d9f2626SSebastian Kapfer { 21599df65e7SKevin Cernekee return (data & priv->mask0) == priv->byte0; 2161d9f2626SSebastian Kapfer } 2171d9f2626SSebastian Kapfer 21804aae283SPali Rohár static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, 2191d9f2626SSebastian Kapfer int left, int right, int middle) 2201d9f2626SSebastian Kapfer { 2211d9f2626SSebastian Kapfer struct input_dev *dev; 2221d9f2626SSebastian Kapfer 2231d9f2626SSebastian Kapfer /* 2241d9f2626SSebastian Kapfer * If shared button has already been reported on the 2251d9f2626SSebastian Kapfer * other device (dev2) then this event should be also 2261d9f2626SSebastian Kapfer * sent through that device. 2271d9f2626SSebastian Kapfer */ 22804aae283SPali Rohár dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; 2291d9f2626SSebastian Kapfer input_report_key(dev, BTN_LEFT, left); 2301d9f2626SSebastian Kapfer 23104aae283SPali Rohár dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; 2321d9f2626SSebastian Kapfer input_report_key(dev, BTN_RIGHT, right); 2331d9f2626SSebastian Kapfer 23404aae283SPali Rohár dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; 2351d9f2626SSebastian Kapfer input_report_key(dev, BTN_MIDDLE, middle); 2361d9f2626SSebastian Kapfer 2371d9f2626SSebastian Kapfer /* 2381d9f2626SSebastian Kapfer * Sync the _other_ device now, we'll do the first 2391d9f2626SSebastian Kapfer * device later once we report the rest of the events. 2401d9f2626SSebastian Kapfer */ 24104aae283SPali Rohár if (dev2) 2421d9f2626SSebastian Kapfer input_sync(dev2); 2431d9f2626SSebastian Kapfer } 2441d9f2626SSebastian Kapfer 24525bded7cSSeth Forshee static void alps_process_packet_v1_v2(struct psmouse *psmouse) 2461da177e4SLinus Torvalds { 2471da177e4SLinus Torvalds struct alps_data *priv = psmouse->private; 2481da177e4SLinus Torvalds unsigned char *packet = psmouse->packet; 2492e5b636bSDmitry Torokhov struct input_dev *dev = psmouse->dev; 2502e5b636bSDmitry Torokhov struct input_dev *dev2 = priv->dev2; 2511da177e4SLinus Torvalds int x, y, z, ges, fin, left, right, middle; 252c30b4c10SIvan Casado Ruiz int back = 0, forward = 0; 2531da177e4SLinus Torvalds 25499df65e7SKevin Cernekee if (priv->proto_version == ALPS_PROTO_V1) { 255d2f4012fSYotam Medini left = packet[2] & 0x10; 256d2f4012fSYotam Medini right = packet[2] & 0x08; 2571da177e4SLinus Torvalds middle = 0; 2581da177e4SLinus Torvalds x = packet[1] | ((packet[0] & 0x07) << 7); 2591da177e4SLinus Torvalds y = packet[4] | ((packet[3] & 0x07) << 7); 2601da177e4SLinus Torvalds z = packet[5]; 2611da177e4SLinus Torvalds } else { 2621da177e4SLinus Torvalds left = packet[3] & 1; 2631da177e4SLinus Torvalds right = packet[3] & 2; 2641da177e4SLinus Torvalds middle = packet[3] & 4; 2651da177e4SLinus Torvalds x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); 2661da177e4SLinus Torvalds y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); 2671da177e4SLinus Torvalds z = packet[5]; 2681da177e4SLinus Torvalds } 2691da177e4SLinus Torvalds 27099df65e7SKevin Cernekee if (priv->flags & ALPS_FW_BK_1) { 2713c00bb96SLaszlo Kajan back = packet[0] & 0x10; 2723c00bb96SLaszlo Kajan forward = packet[2] & 4; 273c30b4c10SIvan Casado Ruiz } 274c30b4c10SIvan Casado Ruiz 27599df65e7SKevin Cernekee if (priv->flags & ALPS_FW_BK_2) { 276c30b4c10SIvan Casado Ruiz back = packet[3] & 4; 277c30b4c10SIvan Casado Ruiz forward = packet[2] & 4; 278c30b4c10SIvan Casado Ruiz if ((middle = forward && back)) 279c30b4c10SIvan Casado Ruiz forward = back = 0; 280c30b4c10SIvan Casado Ruiz } 281c30b4c10SIvan Casado Ruiz 2821da177e4SLinus Torvalds ges = packet[2] & 1; 2831da177e4SLinus Torvalds fin = packet[2] & 2; 2841da177e4SLinus Torvalds 28599df65e7SKevin Cernekee if ((priv->flags & ALPS_DUALPOINT) && z == 127) { 2861da177e4SLinus Torvalds input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); 2871da177e4SLinus Torvalds input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); 288d7ed5d88SUlrich Dangel 28904aae283SPali Rohár alps_report_buttons(dev2, dev, left, right, middle); 290d7ed5d88SUlrich Dangel 2911da177e4SLinus Torvalds input_sync(dev2); 2921da177e4SLinus Torvalds return; 2931da177e4SLinus Torvalds } 2941da177e4SLinus Torvalds 29519556219SHans de Goede /* Some models have separate stick button bits */ 29619556219SHans de Goede if (priv->flags & ALPS_STICK_BITS) { 29792bac83dSHans de Goede left |= packet[0] & 1; 29892bac83dSHans de Goede right |= packet[0] & 2; 29992bac83dSHans de Goede middle |= packet[0] & 4; 30092bac83dSHans de Goede } 30192bac83dSHans de Goede 30204aae283SPali Rohár alps_report_buttons(dev, dev2, left, right, middle); 303d7ed5d88SUlrich Dangel 3041da177e4SLinus Torvalds /* Convert hardware tap to a reasonable Z value */ 30571bb21b6SMaxim Levitsky if (ges && !fin) 30671bb21b6SMaxim Levitsky z = 40; 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds /* 3091da177e4SLinus Torvalds * A "tap and drag" operation is reported by the hardware as a transition 3101da177e4SLinus Torvalds * from (!fin && ges) to (fin && ges). This should be translated to the 3111da177e4SLinus Torvalds * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. 3121da177e4SLinus Torvalds */ 3131da177e4SLinus Torvalds if (ges && fin && !priv->prev_fin) { 3141da177e4SLinus Torvalds input_report_abs(dev, ABS_X, x); 3151da177e4SLinus Torvalds input_report_abs(dev, ABS_Y, y); 3161da177e4SLinus Torvalds input_report_abs(dev, ABS_PRESSURE, 0); 3171da177e4SLinus Torvalds input_report_key(dev, BTN_TOOL_FINGER, 0); 3181da177e4SLinus Torvalds input_sync(dev); 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds priv->prev_fin = fin; 3211da177e4SLinus Torvalds 32271bb21b6SMaxim Levitsky if (z > 30) 32371bb21b6SMaxim Levitsky input_report_key(dev, BTN_TOUCH, 1); 32471bb21b6SMaxim Levitsky if (z < 25) 32571bb21b6SMaxim Levitsky input_report_key(dev, BTN_TOUCH, 0); 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds if (z > 0) { 3281da177e4SLinus Torvalds input_report_abs(dev, ABS_X, x); 3291da177e4SLinus Torvalds input_report_abs(dev, ABS_Y, y); 3301da177e4SLinus Torvalds } 3311da177e4SLinus Torvalds 3321da177e4SLinus Torvalds input_report_abs(dev, ABS_PRESSURE, z); 3331da177e4SLinus Torvalds input_report_key(dev, BTN_TOOL_FINGER, z > 0); 3341da177e4SLinus Torvalds 33599df65e7SKevin Cernekee if (priv->flags & ALPS_WHEEL) 336e6c047b9SVojtech Pavlik input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); 3371da177e4SLinus Torvalds 33899df65e7SKevin Cernekee if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 339c30b4c10SIvan Casado Ruiz input_report_key(dev, BTN_FORWARD, forward); 340c30b4c10SIvan Casado Ruiz input_report_key(dev, BTN_BACK, back); 3411da177e4SLinus Torvalds } 3421da177e4SLinus Torvalds 34399df65e7SKevin Cernekee if (priv->flags & ALPS_FOUR_BUTTONS) { 34471bb21b6SMaxim Levitsky input_report_key(dev, BTN_0, packet[2] & 4); 34571bb21b6SMaxim Levitsky input_report_key(dev, BTN_1, packet[0] & 0x10); 34671bb21b6SMaxim Levitsky input_report_key(dev, BTN_2, packet[3] & 4); 34771bb21b6SMaxim Levitsky input_report_key(dev, BTN_3, packet[0] & 0x20); 34871bb21b6SMaxim Levitsky } 34971bb21b6SMaxim Levitsky 3501da177e4SLinus Torvalds input_sync(dev); 3511da177e4SLinus Torvalds } 3521da177e4SLinus Torvalds 353036e6c7bSHans de Goede static void alps_get_bitmap_points(unsigned int map, 354036e6c7bSHans de Goede struct alps_bitmap_point *low, 355036e6c7bSHans de Goede struct alps_bitmap_point *high, 356036e6c7bSHans de Goede int *fingers) 357036e6c7bSHans de Goede { 358036e6c7bSHans de Goede struct alps_bitmap_point *point; 359036e6c7bSHans de Goede int i, bit, prev_bit = 0; 360036e6c7bSHans de Goede 361036e6c7bSHans de Goede point = low; 362036e6c7bSHans de Goede for (i = 0; map != 0; i++, map >>= 1) { 363036e6c7bSHans de Goede bit = map & 1; 364036e6c7bSHans de Goede if (bit) { 365036e6c7bSHans de Goede if (!prev_bit) { 366036e6c7bSHans de Goede point->start_bit = i; 367105affbfSHans de Goede point->num_bits = 0; 368036e6c7bSHans de Goede (*fingers)++; 369036e6c7bSHans de Goede } 370036e6c7bSHans de Goede point->num_bits++; 371036e6c7bSHans de Goede } else { 372036e6c7bSHans de Goede if (prev_bit) 373036e6c7bSHans de Goede point = high; 374036e6c7bSHans de Goede } 375036e6c7bSHans de Goede prev_bit = bit; 376036e6c7bSHans de Goede } 377036e6c7bSHans de Goede } 378036e6c7bSHans de Goede 379ee65d4b3SYunkang Tang /* 380dccf1dd8SHans de Goede * Process bitmap data from semi-mt protocols. Returns the number of 38101ce661fSSeth Forshee * fingers detected. A return value of 0 means at least one of the 38201ce661fSSeth Forshee * bitmaps was empty. 38301ce661fSSeth Forshee * 38401ce661fSSeth Forshee * The bitmaps don't have enough data to track fingers, so this function 38501ce661fSSeth Forshee * only generates points representing a bounding box of all contacts. 38602d04254SHans de Goede * These points are returned in fields->mt when the return value 38701ce661fSSeth Forshee * is greater than 0. 38801ce661fSSeth Forshee */ 3897a9f73e7SKevin Cernekee static int alps_process_bitmap(struct alps_data *priv, 39002d04254SHans de Goede struct alps_fields *fields) 39101ce661fSSeth Forshee { 3924dd26573SHans de Goede int i, fingers_x = 0, fingers_y = 0, fingers, closest; 39301ce661fSSeth Forshee struct alps_bitmap_point x_low = {0,}, x_high = {0,}; 39401ce661fSSeth Forshee struct alps_bitmap_point y_low = {0,}, y_high = {0,}; 3954dd26573SHans de Goede struct input_mt_pos corner[4]; 39601ce661fSSeth Forshee 39702d04254SHans de Goede if (!fields->x_map || !fields->y_map) 39801ce661fSSeth Forshee return 0; 39901ce661fSSeth Forshee 40002d04254SHans de Goede alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); 40102d04254SHans de Goede alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); 40201ce661fSSeth Forshee 40301ce661fSSeth Forshee /* 40401ce661fSSeth Forshee * Fingers can overlap, so we use the maximum count of fingers 40501ce661fSSeth Forshee * on either axis as the finger count. 40601ce661fSSeth Forshee */ 40701ce661fSSeth Forshee fingers = max(fingers_x, fingers_y); 40801ce661fSSeth Forshee 40901ce661fSSeth Forshee /* 41020bea68bSHans de Goede * If an axis reports only a single contact, we have overlapping or 41120bea68bSHans de Goede * adjacent fingers. Divide the single contact between the two points. 41201ce661fSSeth Forshee */ 41301ce661fSSeth Forshee if (fingers_x == 1) { 41428835f45SHans de Goede i = (x_low.num_bits - 1) / 2; 41501ce661fSSeth Forshee x_low.num_bits = x_low.num_bits - i; 41601ce661fSSeth Forshee x_high.start_bit = x_low.start_bit + i; 41701ce661fSSeth Forshee x_high.num_bits = max(i, 1); 41820bea68bSHans de Goede } 41920bea68bSHans de Goede if (fingers_y == 1) { 42028835f45SHans de Goede i = (y_low.num_bits - 1) / 2; 42101ce661fSSeth Forshee y_low.num_bits = y_low.num_bits - i; 42201ce661fSSeth Forshee y_high.start_bit = y_low.start_bit + i; 42301ce661fSSeth Forshee y_high.num_bits = max(i, 1); 42401ce661fSSeth Forshee } 42501ce661fSSeth Forshee 4264dd26573SHans de Goede /* top-left corner */ 4274dd26573SHans de Goede corner[0].x = 42802d04254SHans de Goede (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 4297a9f73e7SKevin Cernekee (2 * (priv->x_bits - 1)); 4304dd26573SHans de Goede corner[0].y = 43102d04254SHans de Goede (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 4327a9f73e7SKevin Cernekee (2 * (priv->y_bits - 1)); 43301ce661fSSeth Forshee 4344dd26573SHans de Goede /* top-right corner */ 4354dd26573SHans de Goede corner[1].x = 43602d04254SHans de Goede (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 4377a9f73e7SKevin Cernekee (2 * (priv->x_bits - 1)); 4384dd26573SHans de Goede corner[1].y = 4394dd26573SHans de Goede (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / 4404dd26573SHans de Goede (2 * (priv->y_bits - 1)); 4414dd26573SHans de Goede 4424dd26573SHans de Goede /* bottom-right corner */ 4434dd26573SHans de Goede corner[2].x = 4444dd26573SHans de Goede (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / 4454dd26573SHans de Goede (2 * (priv->x_bits - 1)); 4464dd26573SHans de Goede corner[2].y = 44702d04254SHans de Goede (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 4487a9f73e7SKevin Cernekee (2 * (priv->y_bits - 1)); 44901ce661fSSeth Forshee 4504dd26573SHans de Goede /* bottom-left corner */ 4514dd26573SHans de Goede corner[3].x = 4524dd26573SHans de Goede (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / 4534dd26573SHans de Goede (2 * (priv->x_bits - 1)); 4544dd26573SHans de Goede corner[3].y = 45501ce661fSSeth Forshee (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / 45601ce661fSSeth Forshee (2 * (priv->y_bits - 1)); 45701ce661fSSeth Forshee 458dccf1dd8SHans de Goede /* x-bitmap order is reversed on v5 touchpads */ 459dccf1dd8SHans de Goede if (priv->proto_version == ALPS_PROTO_V5) { 460dccf1dd8SHans de Goede for (i = 0; i < 4; i++) 461dccf1dd8SHans de Goede corner[i].x = priv->x_max - corner[i].x; 46240e8f53bSHans de Goede } 46340e8f53bSHans de Goede 464dccf1dd8SHans de Goede /* y-bitmap order is reversed on v3 and v4 touchpads */ 465dccf1dd8SHans de Goede if (priv->proto_version == ALPS_PROTO_V3 || 466dccf1dd8SHans de Goede priv->proto_version == ALPS_PROTO_V4) { 4674dd26573SHans de Goede for (i = 0; i < 4; i++) 4684dd26573SHans de Goede corner[i].y = priv->y_max - corner[i].y; 46901ce661fSSeth Forshee } 47001ce661fSSeth Forshee 4714dd26573SHans de Goede /* 4724dd26573SHans de Goede * We only select a corner for the second touch once per 2 finger 4734dd26573SHans de Goede * touch sequence to avoid the chosen corner (and thus the coordinates) 4744dd26573SHans de Goede * jumping around when the first touch is in the middle. 4754dd26573SHans de Goede */ 4764dd26573SHans de Goede if (priv->second_touch == -1) { 4774dd26573SHans de Goede /* Find corner closest to our st coordinates */ 4784dd26573SHans de Goede closest = 0x7fffffff; 4794dd26573SHans de Goede for (i = 0; i < 4; i++) { 4804dd26573SHans de Goede int dx = fields->st.x - corner[i].x; 4814dd26573SHans de Goede int dy = fields->st.y - corner[i].y; 4824dd26573SHans de Goede int distance = dx * dx + dy * dy; 4834dd26573SHans de Goede 4844dd26573SHans de Goede if (distance < closest) { 4854dd26573SHans de Goede priv->second_touch = i; 4864dd26573SHans de Goede closest = distance; 4874dd26573SHans de Goede } 4884dd26573SHans de Goede } 4894dd26573SHans de Goede /* And select the opposite corner to use for the 2nd touch */ 4904dd26573SHans de Goede priv->second_touch = (priv->second_touch + 2) % 4; 4914dd26573SHans de Goede } 4924dd26573SHans de Goede 4934dd26573SHans de Goede fields->mt[0] = fields->st; 4944dd26573SHans de Goede fields->mt[1] = corner[priv->second_touch]; 4954dd26573SHans de Goede 49601ce661fSSeth Forshee return fingers; 49701ce661fSSeth Forshee } 49801ce661fSSeth Forshee 499cdf333efSHans de Goede static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) 50001ce661fSSeth Forshee { 50101ce661fSSeth Forshee input_mt_slot(dev, slot); 502cdf333efSHans de Goede input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); 50301ce661fSSeth Forshee input_report_abs(dev, ABS_MT_POSITION_X, x); 50401ce661fSSeth Forshee input_report_abs(dev, ABS_MT_POSITION_Y, y); 50501ce661fSSeth Forshee } 50601ce661fSSeth Forshee 507cdf333efSHans de Goede static void alps_report_mt_data(struct psmouse *psmouse, int n) 50801ce661fSSeth Forshee { 50902d04254SHans de Goede struct alps_data *priv = psmouse->private; 51002d04254SHans de Goede struct input_dev *dev = psmouse->dev; 51102d04254SHans de Goede struct alps_fields *f = &priv->f; 512cdf333efSHans de Goede int i, slot[MAX_TOUCHES]; 51302d04254SHans de Goede 514448c7f38SHenrik Rydberg input_mt_assign_slots(dev, slot, f->mt, n, 0); 515cdf333efSHans de Goede for (i = 0; i < n; i++) 516cdf333efSHans de Goede alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); 517cdf333efSHans de Goede 518cdf333efSHans de Goede input_mt_sync_frame(dev); 51901ce661fSSeth Forshee } 52001ce661fSSeth Forshee 52168c21870SHans de Goede static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) 52268c21870SHans de Goede { 52368c21870SHans de Goede struct alps_data *priv = psmouse->private; 52468c21870SHans de Goede struct input_dev *dev = psmouse->dev; 52568c21870SHans de Goede struct alps_fields *f = &priv->f; 52668c21870SHans de Goede 52768c21870SHans de Goede /* Use st data when we don't have mt data */ 52868c21870SHans de Goede if (fingers < 2) { 52968c21870SHans de Goede f->mt[0].x = f->st.x; 53068c21870SHans de Goede f->mt[0].y = f->st.y; 53168c21870SHans de Goede fingers = f->pressure > 0 ? 1 : 0; 5324dd26573SHans de Goede priv->second_touch = -1; 53368c21870SHans de Goede } 53468c21870SHans de Goede 5351662c033SHans de Goede if (fingers >= 1) 5361662c033SHans de Goede alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); 5371662c033SHans de Goede if (fingers >= 2) 5381662c033SHans de Goede alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); 5391662c033SHans de Goede input_mt_sync_frame(dev); 54068c21870SHans de Goede 54168c21870SHans de Goede input_mt_report_finger_count(dev, fingers); 54268c21870SHans de Goede 54368c21870SHans de Goede input_report_key(dev, BTN_LEFT, f->left); 54468c21870SHans de Goede input_report_key(dev, BTN_RIGHT, f->right); 54568c21870SHans de Goede input_report_key(dev, BTN_MIDDLE, f->middle); 54668c21870SHans de Goede 54768c21870SHans de Goede input_report_abs(dev, ABS_PRESSURE, f->pressure); 54868c21870SHans de Goede 54968c21870SHans de Goede input_sync(dev); 55068c21870SHans de Goede } 55168c21870SHans de Goede 55225bded7cSSeth Forshee static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) 55325bded7cSSeth Forshee { 55425bded7cSSeth Forshee struct alps_data *priv = psmouse->private; 55525bded7cSSeth Forshee unsigned char *packet = psmouse->packet; 55625bded7cSSeth Forshee struct input_dev *dev = priv->dev2; 55725bded7cSSeth Forshee int x, y, z, left, right, middle; 55825bded7cSSeth Forshee 55934412ba2SPali Rohár /* It should be a DualPoint when received trackstick packet */ 56034412ba2SPali Rohár if (!(priv->flags & ALPS_DUALPOINT)) { 56134412ba2SPali Rohár psmouse_warn(psmouse, 56234412ba2SPali Rohár "Rejected trackstick packet from non DualPoint device"); 56334412ba2SPali Rohár return; 56434412ba2SPali Rohár } 56534412ba2SPali Rohár 56625bded7cSSeth Forshee /* Sanity check packet */ 56725bded7cSSeth Forshee if (!(packet[0] & 0x40)) { 56825bded7cSSeth Forshee psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); 56925bded7cSSeth Forshee return; 57025bded7cSSeth Forshee } 57125bded7cSSeth Forshee 57225bded7cSSeth Forshee /* 57325bded7cSSeth Forshee * There's a special packet that seems to indicate the end 57425bded7cSSeth Forshee * of a stream of trackstick data. Filter these out. 57525bded7cSSeth Forshee */ 57625bded7cSSeth Forshee if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) 57725bded7cSSeth Forshee return; 57825bded7cSSeth Forshee 57925bded7cSSeth Forshee x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); 58025bded7cSSeth Forshee y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); 58125bded7cSSeth Forshee z = (packet[4] & 0x7c) >> 2; 58225bded7cSSeth Forshee 58325bded7cSSeth Forshee /* 58425bded7cSSeth Forshee * The x and y values tend to be quite large, and when used 58525bded7cSSeth Forshee * alone the trackstick is difficult to use. Scale them down 58625bded7cSSeth Forshee * to compensate. 58725bded7cSSeth Forshee */ 58825bded7cSSeth Forshee x /= 8; 58925bded7cSSeth Forshee y /= 8; 59025bded7cSSeth Forshee 59125bded7cSSeth Forshee input_report_rel(dev, REL_X, x); 59225bded7cSSeth Forshee input_report_rel(dev, REL_Y, -y); 59325bded7cSSeth Forshee 59425bded7cSSeth Forshee /* 59525bded7cSSeth Forshee * Most ALPS models report the trackstick buttons in the touchpad 59625bded7cSSeth Forshee * packets, but a few report them here. No reliable way has been 59725bded7cSSeth Forshee * found to differentiate between the models upfront, so we enable 59825bded7cSSeth Forshee * the quirk in response to seeing a button press in the trackstick 59925bded7cSSeth Forshee * packet. 60025bded7cSSeth Forshee */ 60125bded7cSSeth Forshee left = packet[3] & 0x01; 60225bded7cSSeth Forshee right = packet[3] & 0x02; 60325bded7cSSeth Forshee middle = packet[3] & 0x04; 60425bded7cSSeth Forshee 60525bded7cSSeth Forshee if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && 60625bded7cSSeth Forshee (left || right || middle)) 60725bded7cSSeth Forshee priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; 60825bded7cSSeth Forshee 60925bded7cSSeth Forshee if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { 61025bded7cSSeth Forshee input_report_key(dev, BTN_LEFT, left); 61125bded7cSSeth Forshee input_report_key(dev, BTN_RIGHT, right); 61225bded7cSSeth Forshee input_report_key(dev, BTN_MIDDLE, middle); 61325bded7cSSeth Forshee } 61425bded7cSSeth Forshee 61525bded7cSSeth Forshee input_sync(dev); 61625bded7cSSeth Forshee return; 61725bded7cSSeth Forshee } 61825bded7cSSeth Forshee 619f85e5001SKevin Cernekee static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) 620f85e5001SKevin Cernekee { 621f85e5001SKevin Cernekee f->left = !!(p[3] & 0x01); 622f85e5001SKevin Cernekee f->right = !!(p[3] & 0x02); 623f85e5001SKevin Cernekee f->middle = !!(p[3] & 0x04); 624f85e5001SKevin Cernekee 625f85e5001SKevin Cernekee f->ts_left = !!(p[3] & 0x10); 626f85e5001SKevin Cernekee f->ts_right = !!(p[3] & 0x20); 627f85e5001SKevin Cernekee f->ts_middle = !!(p[3] & 0x40); 628f85e5001SKevin Cernekee } 629f85e5001SKevin Cernekee 63038c11eaaSHans de Goede static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, 631ee65d4b3SYunkang Tang struct psmouse *psmouse) 632f85e5001SKevin Cernekee { 633f85e5001SKevin Cernekee f->first_mp = !!(p[4] & 0x40); 634f85e5001SKevin Cernekee f->is_mp = !!(p[0] & 0x40); 635f85e5001SKevin Cernekee 636a839cd57SHans de Goede if (f->is_mp) { 637f85e5001SKevin Cernekee f->fingers = (p[5] & 0x3) + 1; 638f85e5001SKevin Cernekee f->x_map = ((p[4] & 0x7e) << 8) | 639f85e5001SKevin Cernekee ((p[1] & 0x7f) << 2) | 640f85e5001SKevin Cernekee ((p[0] & 0x30) >> 4); 641f85e5001SKevin Cernekee f->y_map = ((p[3] & 0x70) << 4) | 642f85e5001SKevin Cernekee ((p[2] & 0x7f) << 1) | 643f85e5001SKevin Cernekee (p[4] & 0x01); 644a839cd57SHans de Goede } else { 64502d04254SHans de Goede f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 646f85e5001SKevin Cernekee ((p[0] & 0x30) >> 4); 64702d04254SHans de Goede f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 64802d04254SHans de Goede f->pressure = p[5] & 0x7f; 649f85e5001SKevin Cernekee 650f85e5001SKevin Cernekee alps_decode_buttons_v3(f, p); 651a839cd57SHans de Goede } 65238c11eaaSHans de Goede 65338c11eaaSHans de Goede return 0; 654f85e5001SKevin Cernekee } 655f85e5001SKevin Cernekee 65638c11eaaSHans de Goede static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, 657ee65d4b3SYunkang Tang struct psmouse *psmouse) 6581302bac3SKevin Cernekee { 659aab9cf7bSHans de Goede f->first_mp = !!(p[4] & 0x40); 660f105e34aSYunkang Tang f->is_mp = !!(p[5] & 0x40); 661aab9cf7bSHans de Goede 662a839cd57SHans de Goede if (f->is_mp) { 663f105e34aSYunkang Tang f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; 664aab9cf7bSHans de Goede f->x_map = ((p[5] & 0x10) << 11) | 665aab9cf7bSHans de Goede ((p[4] & 0x7e) << 8) | 666aab9cf7bSHans de Goede ((p[1] & 0x7f) << 2) | 667aab9cf7bSHans de Goede ((p[0] & 0x30) >> 4); 668aab9cf7bSHans de Goede f->y_map = ((p[5] & 0x20) << 6) | 669aab9cf7bSHans de Goede ((p[3] & 0x70) << 4) | 670aab9cf7bSHans de Goede ((p[2] & 0x7f) << 1) | 671aab9cf7bSHans de Goede (p[4] & 0x01); 672a839cd57SHans de Goede } else { 673aab9cf7bSHans de Goede f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | 674aab9cf7bSHans de Goede ((p[0] & 0x30) >> 4); 675aab9cf7bSHans de Goede f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); 676aab9cf7bSHans de Goede f->pressure = p[5] & 0x7f; 677aab9cf7bSHans de Goede 678aab9cf7bSHans de Goede alps_decode_buttons_v3(f, p); 679a839cd57SHans de Goede } 68038c11eaaSHans de Goede 68138c11eaaSHans de Goede return 0; 6821302bac3SKevin Cernekee } 6831302bac3SKevin Cernekee 68438c11eaaSHans de Goede static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, 685ee65d4b3SYunkang Tang struct psmouse *psmouse) 68675af9e56SDave Turvene { 687ee65d4b3SYunkang Tang u64 palm_data = 0; 688ee65d4b3SYunkang Tang struct alps_data *priv = psmouse->private; 689ee65d4b3SYunkang Tang 69075af9e56SDave Turvene f->first_mp = !!(p[0] & 0x02); 69175af9e56SDave Turvene f->is_mp = !!(p[0] & 0x20); 69275af9e56SDave Turvene 693ee65d4b3SYunkang Tang if (!f->is_mp) { 69402d04254SHans de Goede f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); 69502d04254SHans de Goede f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); 69602d04254SHans de Goede f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; 69775af9e56SDave Turvene alps_decode_buttons_v3(f, p); 698ee65d4b3SYunkang Tang } else { 699ee65d4b3SYunkang Tang f->fingers = ((p[0] & 0x6) >> 1 | 700ee65d4b3SYunkang Tang (p[0] & 0x10) >> 2); 701ee65d4b3SYunkang Tang 702ee65d4b3SYunkang Tang palm_data = (p[1] & 0x7f) | 703ee65d4b3SYunkang Tang ((p[2] & 0x7f) << 7) | 704ee65d4b3SYunkang Tang ((p[4] & 0x7f) << 14) | 705ee65d4b3SYunkang Tang ((p[5] & 0x7f) << 21) | 706ee65d4b3SYunkang Tang ((p[3] & 0x07) << 28) | 707ee65d4b3SYunkang Tang (((u64)p[3] & 0x70) << 27) | 708ee65d4b3SYunkang Tang (((u64)p[0] & 0x01) << 34); 709ee65d4b3SYunkang Tang 710ee65d4b3SYunkang Tang /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ 711ee65d4b3SYunkang Tang f->y_map = palm_data & (BIT(priv->y_bits) - 1); 712ee65d4b3SYunkang Tang 713ee65d4b3SYunkang Tang /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ 714ee65d4b3SYunkang Tang f->x_map = (palm_data >> priv->y_bits) & 715ee65d4b3SYunkang Tang (BIT(priv->x_bits) - 1); 716ee65d4b3SYunkang Tang } 71738c11eaaSHans de Goede 71838c11eaaSHans de Goede return 0; 71975af9e56SDave Turvene } 72075af9e56SDave Turvene 721ee65d4b3SYunkang Tang static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) 72225bded7cSSeth Forshee { 72325bded7cSSeth Forshee struct alps_data *priv = psmouse->private; 72425bded7cSSeth Forshee unsigned char *packet = psmouse->packet; 72525bded7cSSeth Forshee struct input_dev *dev2 = priv->dev2; 72602d04254SHans de Goede struct alps_fields *f = &priv->f; 72702d04254SHans de Goede int fingers = 0; 728f85e5001SKevin Cernekee 72902d04254SHans de Goede memset(f, 0, sizeof(*f)); 73002d04254SHans de Goede 73102d04254SHans de Goede priv->decode_fields(f, packet, psmouse); 73225bded7cSSeth Forshee 73325bded7cSSeth Forshee /* 73401ce661fSSeth Forshee * There's no single feature of touchpad position and bitmap packets 73501ce661fSSeth Forshee * that can be used to distinguish between them. We rely on the fact 73601ce661fSSeth Forshee * that a bitmap packet should always follow a position packet with 73701ce661fSSeth Forshee * bit 6 of packet[4] set. 73825bded7cSSeth Forshee */ 73925bded7cSSeth Forshee if (priv->multi_packet) { 74025bded7cSSeth Forshee /* 74125bded7cSSeth Forshee * Sometimes a position packet will indicate a multi-packet 74225bded7cSSeth Forshee * sequence, but then what follows is another position 74325bded7cSSeth Forshee * packet. Check for this, and when it happens process the 74425bded7cSSeth Forshee * position packet as usual. 74525bded7cSSeth Forshee */ 74602d04254SHans de Goede if (f->is_mp) { 74702d04254SHans de Goede fingers = f->fingers; 74844b77f38SHans de Goede /* 74944b77f38SHans de Goede * Bitmap processing uses position packet's coordinate 75044b77f38SHans de Goede * data, so we need to do decode it first. 75144b77f38SHans de Goede */ 75244b77f38SHans de Goede priv->decode_fields(f, priv->multi_data, psmouse); 75302d04254SHans de Goede if (alps_process_bitmap(priv, f) == 0) 75420bea68bSHans de Goede fingers = 0; /* Use st data */ 75501ce661fSSeth Forshee } else { 75601ce661fSSeth Forshee priv->multi_packet = 0; 75725bded7cSSeth Forshee } 75825bded7cSSeth Forshee } 75925bded7cSSeth Forshee 76001ce661fSSeth Forshee /* 76101ce661fSSeth Forshee * Bit 6 of byte 0 is not usually set in position packets. The only 76201ce661fSSeth Forshee * times it seems to be set is in situations where the data is 76301ce661fSSeth Forshee * suspect anyway, e.g. a palm resting flat on the touchpad. Given 76401ce661fSSeth Forshee * this combined with the fact that this bit is useful for filtering 76501ce661fSSeth Forshee * out misidentified bitmap packets, we reject anything with this 76601ce661fSSeth Forshee * bit set. 76701ce661fSSeth Forshee */ 76802d04254SHans de Goede if (f->is_mp) 76901ce661fSSeth Forshee return; 77001ce661fSSeth Forshee 77102d04254SHans de Goede if (!priv->multi_packet && f->first_mp) { 77225bded7cSSeth Forshee priv->multi_packet = 1; 77301ce661fSSeth Forshee memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 77401ce661fSSeth Forshee return; 77501ce661fSSeth Forshee } 77601ce661fSSeth Forshee 77725bded7cSSeth Forshee priv->multi_packet = 0; 77825bded7cSSeth Forshee 77925bded7cSSeth Forshee /* 78025bded7cSSeth Forshee * Sometimes the hardware sends a single packet with z = 0 78125bded7cSSeth Forshee * in the middle of a stream. Real releases generate packets 78225bded7cSSeth Forshee * with x, y, and z all zero, so these seem to be flukes. 78325bded7cSSeth Forshee * Ignore them. 78425bded7cSSeth Forshee */ 78502d04254SHans de Goede if (f->st.x && f->st.y && !f->pressure) 78625bded7cSSeth Forshee return; 78725bded7cSSeth Forshee 78868c21870SHans de Goede alps_report_semi_mt_data(psmouse, fingers); 78925bded7cSSeth Forshee 79034412ba2SPali Rohár if ((priv->flags & ALPS_DUALPOINT) && 79134412ba2SPali Rohár !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { 79202d04254SHans de Goede input_report_key(dev2, BTN_LEFT, f->ts_left); 79302d04254SHans de Goede input_report_key(dev2, BTN_RIGHT, f->ts_right); 79402d04254SHans de Goede input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 79525bded7cSSeth Forshee input_sync(dev2); 79625bded7cSSeth Forshee } 79725bded7cSSeth Forshee } 79825bded7cSSeth Forshee 79925bded7cSSeth Forshee static void alps_process_packet_v3(struct psmouse *psmouse) 80025bded7cSSeth Forshee { 80125bded7cSSeth Forshee unsigned char *packet = psmouse->packet; 80225bded7cSSeth Forshee 80325bded7cSSeth Forshee /* 80425bded7cSSeth Forshee * v3 protocol packets come in three types, two representing 80525bded7cSSeth Forshee * touchpad data and one representing trackstick data. 80625bded7cSSeth Forshee * Trackstick packets seem to be distinguished by always 80725bded7cSSeth Forshee * having 0x3f in the last byte. This value has never been 80825bded7cSSeth Forshee * observed in the last byte of either of the other types 80925bded7cSSeth Forshee * of packets. 81025bded7cSSeth Forshee */ 81125bded7cSSeth Forshee if (packet[5] == 0x3f) { 81225bded7cSSeth Forshee alps_process_trackstick_packet_v3(psmouse); 81325bded7cSSeth Forshee return; 81425bded7cSSeth Forshee } 81525bded7cSSeth Forshee 816ee65d4b3SYunkang Tang alps_process_touchpad_packet_v3_v5(psmouse); 81725bded7cSSeth Forshee } 81825bded7cSSeth Forshee 81995f75e91SYunkang Tang static void alps_process_packet_v6(struct psmouse *psmouse) 82095f75e91SYunkang Tang { 82195f75e91SYunkang Tang struct alps_data *priv = psmouse->private; 82295f75e91SYunkang Tang unsigned char *packet = psmouse->packet; 82395f75e91SYunkang Tang struct input_dev *dev = psmouse->dev; 82495f75e91SYunkang Tang struct input_dev *dev2 = priv->dev2; 82595f75e91SYunkang Tang int x, y, z, left, right, middle; 82695f75e91SYunkang Tang 82795f75e91SYunkang Tang /* 82895f75e91SYunkang Tang * We can use Byte5 to distinguish if the packet is from Touchpad 82995f75e91SYunkang Tang * or Trackpoint. 83095f75e91SYunkang Tang * Touchpad: 0 - 0x7E 83195f75e91SYunkang Tang * Trackpoint: 0x7F 83295f75e91SYunkang Tang */ 83395f75e91SYunkang Tang if (packet[5] == 0x7F) { 83495f75e91SYunkang Tang /* It should be a DualPoint when received Trackpoint packet */ 83534412ba2SPali Rohár if (!(priv->flags & ALPS_DUALPOINT)) { 83634412ba2SPali Rohár psmouse_warn(psmouse, 83734412ba2SPali Rohár "Rejected trackstick packet from non DualPoint device"); 83895f75e91SYunkang Tang return; 83934412ba2SPali Rohár } 84095f75e91SYunkang Tang 84195f75e91SYunkang Tang /* Trackpoint packet */ 84295f75e91SYunkang Tang x = packet[1] | ((packet[3] & 0x20) << 2); 84395f75e91SYunkang Tang y = packet[2] | ((packet[3] & 0x40) << 1); 84495f75e91SYunkang Tang z = packet[4]; 84595f75e91SYunkang Tang left = packet[3] & 0x01; 84695f75e91SYunkang Tang right = packet[3] & 0x02; 84795f75e91SYunkang Tang middle = packet[3] & 0x04; 84895f75e91SYunkang Tang 84995f75e91SYunkang Tang /* To prevent the cursor jump when finger lifted */ 85095f75e91SYunkang Tang if (x == 0x7F && y == 0x7F && z == 0x7F) 85195f75e91SYunkang Tang x = y = z = 0; 85295f75e91SYunkang Tang 85395f75e91SYunkang Tang /* Divide 4 since trackpoint's speed is too fast */ 85495f75e91SYunkang Tang input_report_rel(dev2, REL_X, (char)x / 4); 85595f75e91SYunkang Tang input_report_rel(dev2, REL_Y, -((char)y / 4)); 85695f75e91SYunkang Tang 85795f75e91SYunkang Tang input_report_key(dev2, BTN_LEFT, left); 85895f75e91SYunkang Tang input_report_key(dev2, BTN_RIGHT, right); 85995f75e91SYunkang Tang input_report_key(dev2, BTN_MIDDLE, middle); 86095f75e91SYunkang Tang 86195f75e91SYunkang Tang input_sync(dev2); 86295f75e91SYunkang Tang return; 86395f75e91SYunkang Tang } 86495f75e91SYunkang Tang 86595f75e91SYunkang Tang /* Touchpad packet */ 86695f75e91SYunkang Tang x = packet[1] | ((packet[3] & 0x78) << 4); 86795f75e91SYunkang Tang y = packet[2] | ((packet[4] & 0x78) << 4); 86895f75e91SYunkang Tang z = packet[5]; 86995f75e91SYunkang Tang left = packet[3] & 0x01; 87095f75e91SYunkang Tang right = packet[3] & 0x02; 87195f75e91SYunkang Tang 87295f75e91SYunkang Tang if (z > 30) 87395f75e91SYunkang Tang input_report_key(dev, BTN_TOUCH, 1); 87495f75e91SYunkang Tang if (z < 25) 87595f75e91SYunkang Tang input_report_key(dev, BTN_TOUCH, 0); 87695f75e91SYunkang Tang 87795f75e91SYunkang Tang if (z > 0) { 87895f75e91SYunkang Tang input_report_abs(dev, ABS_X, x); 87995f75e91SYunkang Tang input_report_abs(dev, ABS_Y, y); 88095f75e91SYunkang Tang } 88195f75e91SYunkang Tang 88295f75e91SYunkang Tang input_report_abs(dev, ABS_PRESSURE, z); 88395f75e91SYunkang Tang input_report_key(dev, BTN_TOOL_FINGER, z > 0); 88495f75e91SYunkang Tang 88595f75e91SYunkang Tang /* v6 touchpad does not have middle button */ 88695f75e91SYunkang Tang input_report_key(dev, BTN_LEFT, left); 88795f75e91SYunkang Tang input_report_key(dev, BTN_RIGHT, right); 88895f75e91SYunkang Tang 88995f75e91SYunkang Tang input_sync(dev); 89095f75e91SYunkang Tang } 89195f75e91SYunkang Tang 89225bded7cSSeth Forshee static void alps_process_packet_v4(struct psmouse *psmouse) 89325bded7cSSeth Forshee { 8943b7e09faSGeorge Pantalos struct alps_data *priv = psmouse->private; 89525bded7cSSeth Forshee unsigned char *packet = psmouse->packet; 89602d04254SHans de Goede struct alps_fields *f = &priv->f; 89768c21870SHans de Goede int offset; 8983b7e09faSGeorge Pantalos 8993b7e09faSGeorge Pantalos /* 9003b7e09faSGeorge Pantalos * v4 has a 6-byte encoding for bitmap data, but this data is 9013b7e09faSGeorge Pantalos * broken up between 3 normal packets. Use priv->multi_packet to 9023b7e09faSGeorge Pantalos * track our position in the bitmap packet. 9033b7e09faSGeorge Pantalos */ 9043b7e09faSGeorge Pantalos if (packet[6] & 0x40) { 9053b7e09faSGeorge Pantalos /* sync, reset position */ 9063b7e09faSGeorge Pantalos priv->multi_packet = 0; 9073b7e09faSGeorge Pantalos } 9083b7e09faSGeorge Pantalos 9093b7e09faSGeorge Pantalos if (WARN_ON_ONCE(priv->multi_packet > 2)) 9103b7e09faSGeorge Pantalos return; 9113b7e09faSGeorge Pantalos 9123b7e09faSGeorge Pantalos offset = 2 * priv->multi_packet; 9133b7e09faSGeorge Pantalos priv->multi_data[offset] = packet[6]; 9143b7e09faSGeorge Pantalos priv->multi_data[offset + 1] = packet[7]; 9153b7e09faSGeorge Pantalos 91644b77f38SHans de Goede f->left = !!(packet[4] & 0x01); 91744b77f38SHans de Goede f->right = !!(packet[4] & 0x02); 91844b77f38SHans de Goede 91944b77f38SHans de Goede f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | 92044b77f38SHans de Goede ((packet[0] & 0x30) >> 4); 92144b77f38SHans de Goede f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); 92244b77f38SHans de Goede f->pressure = packet[5] & 0x7f; 92344b77f38SHans de Goede 9243b7e09faSGeorge Pantalos if (++priv->multi_packet > 2) { 9253b7e09faSGeorge Pantalos priv->multi_packet = 0; 9263b7e09faSGeorge Pantalos 92702d04254SHans de Goede f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | 9283b7e09faSGeorge Pantalos ((priv->multi_data[3] & 0x60) << 3) | 9293b7e09faSGeorge Pantalos ((priv->multi_data[0] & 0x3f) << 2) | 9303b7e09faSGeorge Pantalos ((priv->multi_data[1] & 0x60) >> 5); 93102d04254SHans de Goede f->y_map = ((priv->multi_data[5] & 0x01) << 10) | 9323b7e09faSGeorge Pantalos ((priv->multi_data[3] & 0x1f) << 5) | 9333b7e09faSGeorge Pantalos (priv->multi_data[1] & 0x1f); 9343b7e09faSGeorge Pantalos 93502d04254SHans de Goede f->fingers = alps_process_bitmap(priv, f); 9363b7e09faSGeorge Pantalos } 93725bded7cSSeth Forshee 93868c21870SHans de Goede alps_report_semi_mt_data(psmouse, f->fingers); 93925bded7cSSeth Forshee } 94025bded7cSSeth Forshee 9413808843cSYunkang Tang static bool alps_is_valid_package_v7(struct psmouse *psmouse) 9423808843cSYunkang Tang { 9433808843cSYunkang Tang switch (psmouse->pktcnt) { 9443808843cSYunkang Tang case 3: 9453808843cSYunkang Tang return (psmouse->packet[2] & 0x40) == 0x40; 9463808843cSYunkang Tang case 4: 9473808843cSYunkang Tang return (psmouse->packet[3] & 0x48) == 0x48; 9483808843cSYunkang Tang case 6: 9493808843cSYunkang Tang return (psmouse->packet[5] & 0x40) == 0x00; 9503808843cSYunkang Tang } 9513808843cSYunkang Tang return true; 9523808843cSYunkang Tang } 9533808843cSYunkang Tang 9543808843cSYunkang Tang static unsigned char alps_get_packet_id_v7(char *byte) 9553808843cSYunkang Tang { 9563808843cSYunkang Tang unsigned char packet_id; 9573808843cSYunkang Tang 9583808843cSYunkang Tang if (byte[4] & 0x40) 9593808843cSYunkang Tang packet_id = V7_PACKET_ID_TWO; 9603808843cSYunkang Tang else if (byte[4] & 0x01) 9613808843cSYunkang Tang packet_id = V7_PACKET_ID_MULTI; 9623808843cSYunkang Tang else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) 9633808843cSYunkang Tang packet_id = V7_PACKET_ID_NEW; 9643808843cSYunkang Tang else if (byte[1] == 0x00 && byte[4] == 0x00) 9653808843cSYunkang Tang packet_id = V7_PACKET_ID_IDLE; 9663808843cSYunkang Tang else 9673808843cSYunkang Tang packet_id = V7_PACKET_ID_UNKNOWN; 9683808843cSYunkang Tang 9693808843cSYunkang Tang return packet_id; 9703808843cSYunkang Tang } 9713808843cSYunkang Tang 9723808843cSYunkang Tang static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, 9733808843cSYunkang Tang unsigned char *pkt, 9743808843cSYunkang Tang unsigned char pkt_id) 9753808843cSYunkang Tang { 9763808843cSYunkang Tang mt[0].x = ((pkt[2] & 0x80) << 4); 9773808843cSYunkang Tang mt[0].x |= ((pkt[2] & 0x3F) << 5); 9783808843cSYunkang Tang mt[0].x |= ((pkt[3] & 0x30) >> 1); 9793808843cSYunkang Tang mt[0].x |= (pkt[3] & 0x07); 9803808843cSYunkang Tang mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); 9813808843cSYunkang Tang 9823808843cSYunkang Tang mt[1].x = ((pkt[3] & 0x80) << 4); 9833808843cSYunkang Tang mt[1].x |= ((pkt[4] & 0x80) << 3); 9843808843cSYunkang Tang mt[1].x |= ((pkt[4] & 0x3F) << 4); 9853808843cSYunkang Tang mt[1].y = ((pkt[5] & 0x80) << 3); 9863808843cSYunkang Tang mt[1].y |= ((pkt[5] & 0x3F) << 4); 9873808843cSYunkang Tang 9883808843cSYunkang Tang switch (pkt_id) { 9893808843cSYunkang Tang case V7_PACKET_ID_TWO: 9903808843cSYunkang Tang mt[1].x &= ~0x000F; 9913808843cSYunkang Tang mt[1].y |= 0x000F; 99272eceab7SHans de Goede /* Detect false-postive touches where x & y report max value */ 99372eceab7SHans de Goede if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { 99472eceab7SHans de Goede mt[1].x = 0; 99572eceab7SHans de Goede /* y gets set to 0 at the end of this function */ 99672eceab7SHans de Goede } 9973808843cSYunkang Tang break; 9983808843cSYunkang Tang 9993808843cSYunkang Tang case V7_PACKET_ID_MULTI: 10003808843cSYunkang Tang mt[1].x &= ~0x003F; 10013808843cSYunkang Tang mt[1].y &= ~0x0020; 10023808843cSYunkang Tang mt[1].y |= ((pkt[4] & 0x02) << 4); 10033808843cSYunkang Tang mt[1].y |= 0x001F; 10043808843cSYunkang Tang break; 10053808843cSYunkang Tang 10063808843cSYunkang Tang case V7_PACKET_ID_NEW: 10073808843cSYunkang Tang mt[1].x &= ~0x003F; 10083808843cSYunkang Tang mt[1].x |= (pkt[0] & 0x20); 10093808843cSYunkang Tang mt[1].y |= 0x000F; 10103808843cSYunkang Tang break; 10113808843cSYunkang Tang } 10123808843cSYunkang Tang 10133808843cSYunkang Tang mt[0].y = 0x7FF - mt[0].y; 10143808843cSYunkang Tang mt[1].y = 0x7FF - mt[1].y; 10153808843cSYunkang Tang } 10163808843cSYunkang Tang 10173808843cSYunkang Tang static int alps_get_mt_count(struct input_mt_pos *mt) 10183808843cSYunkang Tang { 10197091c443SHans de Goede int i, fingers = 0; 10203808843cSYunkang Tang 10217091c443SHans de Goede for (i = 0; i < MAX_TOUCHES; i++) { 10227091c443SHans de Goede if (mt[i].x != 0 || mt[i].y != 0) 10237091c443SHans de Goede fingers++; 10247091c443SHans de Goede } 10253808843cSYunkang Tang 10267091c443SHans de Goede return fingers; 10273808843cSYunkang Tang } 10283808843cSYunkang Tang 10293808843cSYunkang Tang static int alps_decode_packet_v7(struct alps_fields *f, 10303808843cSYunkang Tang unsigned char *p, 10313808843cSYunkang Tang struct psmouse *psmouse) 10323808843cSYunkang Tang { 1033d27eb793SHans de Goede struct alps_data *priv = psmouse->private; 10343808843cSYunkang Tang unsigned char pkt_id; 10353808843cSYunkang Tang 10363808843cSYunkang Tang pkt_id = alps_get_packet_id_v7(p); 10373808843cSYunkang Tang if (pkt_id == V7_PACKET_ID_IDLE) 10383808843cSYunkang Tang return 0; 10393808843cSYunkang Tang if (pkt_id == V7_PACKET_ID_UNKNOWN) 10403808843cSYunkang Tang return -1; 10418b238115SHans de Goede /* 10428b238115SHans de Goede * NEW packets are send to indicate a discontinuity in the finger 10438b238115SHans de Goede * coordinate reporting. Specifically a finger may have moved from 10448b238115SHans de Goede * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for 10458b238115SHans de Goede * us. 10468b238115SHans de Goede * 10478b238115SHans de Goede * NEW packets have 3 problems: 10488b238115SHans de Goede * 1) They do not contain middle / right button info (on non clickpads) 10498b238115SHans de Goede * this can be worked around by preserving the old button state 10508b238115SHans de Goede * 2) They do not contain an accurate fingercount, and they are 10518b238115SHans de Goede * typically send when the number of fingers changes. We cannot use 10528b238115SHans de Goede * the old finger count as that may mismatch with the amount of 10538b238115SHans de Goede * touch coordinates we've available in the NEW packet 10548b238115SHans de Goede * 3) Their x data for the second touch is inaccurate leading to 10558b238115SHans de Goede * a possible jump of the x coordinate by 16 units when the first 10568b238115SHans de Goede * non NEW packet comes in 10578b238115SHans de Goede * Since problems 2 & 3 cannot be worked around, just ignore them. 10588b238115SHans de Goede */ 10598b238115SHans de Goede if (pkt_id == V7_PACKET_ID_NEW) 10608b238115SHans de Goede return 1; 10613808843cSYunkang Tang 10623808843cSYunkang Tang alps_get_finger_coordinate_v7(f->mt, p, pkt_id); 10633808843cSYunkang Tang 10643808843cSYunkang Tang if (pkt_id == V7_PACKET_ID_TWO) 10653808843cSYunkang Tang f->fingers = alps_get_mt_count(f->mt); 10668b238115SHans de Goede else /* pkt_id == V7_PACKET_ID_MULTI */ 10673808843cSYunkang Tang f->fingers = 3 + (p[5] & 0x03); 10683808843cSYunkang Tang 1069d27eb793SHans de Goede f->left = (p[0] & 0x80) >> 7; 1070d27eb793SHans de Goede if (priv->flags & ALPS_BUTTONPAD) { 1071d27eb793SHans de Goede if (p[0] & 0x20) 1072d27eb793SHans de Goede f->fingers++; 1073d27eb793SHans de Goede if (p[0] & 0x10) 1074d27eb793SHans de Goede f->fingers++; 1075d27eb793SHans de Goede } else { 1076d27eb793SHans de Goede f->right = (p[0] & 0x20) >> 5; 1077d27eb793SHans de Goede f->middle = (p[0] & 0x10) >> 4; 1078d27eb793SHans de Goede } 1079d27eb793SHans de Goede 10807091c443SHans de Goede /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ 10817091c443SHans de Goede if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { 10827091c443SHans de Goede f->mt[0].x = f->mt[1].x; 10837091c443SHans de Goede f->mt[0].y = f->mt[1].y; 10847091c443SHans de Goede f->mt[1].x = 0; 10857091c443SHans de Goede f->mt[1].y = 0; 10867091c443SHans de Goede } 10877091c443SHans de Goede 10883808843cSYunkang Tang return 0; 10893808843cSYunkang Tang } 10903808843cSYunkang Tang 10913808843cSYunkang Tang static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 10923808843cSYunkang Tang { 10933808843cSYunkang Tang struct alps_data *priv = psmouse->private; 10943808843cSYunkang Tang unsigned char *packet = psmouse->packet; 10953808843cSYunkang Tang struct input_dev *dev2 = priv->dev2; 10963808843cSYunkang Tang int x, y, z, left, right, middle; 10973808843cSYunkang Tang 109834412ba2SPali Rohár /* It should be a DualPoint when received trackstick packet */ 109934412ba2SPali Rohár if (!(priv->flags & ALPS_DUALPOINT)) { 110034412ba2SPali Rohár psmouse_warn(psmouse, 110134412ba2SPali Rohár "Rejected trackstick packet from non DualPoint device"); 110234412ba2SPali Rohár return; 110334412ba2SPali Rohár } 110434412ba2SPali Rohár 11053808843cSYunkang Tang x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); 11063808843cSYunkang Tang y = (packet[3] & 0x07) | (packet[4] & 0xb8) | 11073808843cSYunkang Tang ((packet[3] & 0x20) << 1); 11083808843cSYunkang Tang z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); 11093808843cSYunkang Tang 11103808843cSYunkang Tang left = (packet[1] & 0x01); 11113808843cSYunkang Tang right = (packet[1] & 0x02) >> 1; 11123808843cSYunkang Tang middle = (packet[1] & 0x04) >> 2; 11133808843cSYunkang Tang 1114088df2ccSHans de Goede input_report_rel(dev2, REL_X, (char)x); 1115088df2ccSHans de Goede input_report_rel(dev2, REL_Y, -((char)y)); 11163808843cSYunkang Tang 11173808843cSYunkang Tang input_report_key(dev2, BTN_LEFT, left); 11183808843cSYunkang Tang input_report_key(dev2, BTN_RIGHT, right); 11193808843cSYunkang Tang input_report_key(dev2, BTN_MIDDLE, middle); 11203808843cSYunkang Tang 11213808843cSYunkang Tang input_sync(dev2); 11223808843cSYunkang Tang } 11233808843cSYunkang Tang 11243808843cSYunkang Tang static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) 11253808843cSYunkang Tang { 11263808843cSYunkang Tang struct alps_data *priv = psmouse->private; 11273808843cSYunkang Tang struct input_dev *dev = psmouse->dev; 11283808843cSYunkang Tang struct alps_fields *f = &priv->f; 11293808843cSYunkang Tang 11303808843cSYunkang Tang memset(f, 0, sizeof(*f)); 11313808843cSYunkang Tang 11323808843cSYunkang Tang if (priv->decode_fields(f, psmouse->packet, psmouse)) 11333808843cSYunkang Tang return; 11343808843cSYunkang Tang 11353808843cSYunkang Tang alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); 11363808843cSYunkang Tang 11373808843cSYunkang Tang input_mt_report_finger_count(dev, f->fingers); 11383808843cSYunkang Tang 11393808843cSYunkang Tang input_report_key(dev, BTN_LEFT, f->left); 11403808843cSYunkang Tang input_report_key(dev, BTN_RIGHT, f->right); 11413808843cSYunkang Tang input_report_key(dev, BTN_MIDDLE, f->middle); 11423808843cSYunkang Tang 11433808843cSYunkang Tang input_sync(dev); 11443808843cSYunkang Tang } 11453808843cSYunkang Tang 11463808843cSYunkang Tang static void alps_process_packet_v7(struct psmouse *psmouse) 11473808843cSYunkang Tang { 11483808843cSYunkang Tang unsigned char *packet = psmouse->packet; 11493808843cSYunkang Tang 11503808843cSYunkang Tang if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) 11513808843cSYunkang Tang alps_process_trackstick_packet_v7(psmouse); 11523808843cSYunkang Tang else 11533808843cSYunkang Tang alps_process_touchpad_packet_v7(psmouse); 11543808843cSYunkang Tang } 11553808843cSYunkang Tang 115607f19e3dSFengguang Wu static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) 11573db5b9f7SMasaki Ota { 11583db5b9f7SMasaki Ota unsigned char pkt_id = SS4_PACKET_ID_IDLE; 11593db5b9f7SMasaki Ota 11604777ac22SBen Gamari switch (byte[3] & 0x30) { 11614777ac22SBen Gamari case 0x00: 11623db5b9f7SMasaki Ota if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && 11634777ac22SBen Gamari (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && 11644777ac22SBen Gamari byte[5] == 0x00) { 11653db5b9f7SMasaki Ota pkt_id = SS4_PACKET_ID_IDLE; 11663db5b9f7SMasaki Ota } else { 11674777ac22SBen Gamari pkt_id = SS4_PACKET_ID_ONE; 11684777ac22SBen Gamari } 11694777ac22SBen Gamari break; 11704777ac22SBen Gamari case 0x10: 11714777ac22SBen Gamari /* two-finger finger positions */ 11724777ac22SBen Gamari pkt_id = SS4_PACKET_ID_TWO; 11734777ac22SBen Gamari break; 11744777ac22SBen Gamari case 0x20: 11754777ac22SBen Gamari /* stick pointer */ 11764777ac22SBen Gamari pkt_id = SS4_PACKET_ID_STICK; 11774777ac22SBen Gamari break; 11784777ac22SBen Gamari case 0x30: 11794777ac22SBen Gamari /* third and fourth finger positions */ 11803db5b9f7SMasaki Ota pkt_id = SS4_PACKET_ID_MULTI; 11814777ac22SBen Gamari break; 11823db5b9f7SMasaki Ota } 11833db5b9f7SMasaki Ota 11843db5b9f7SMasaki Ota return pkt_id; 11853db5b9f7SMasaki Ota } 11863db5b9f7SMasaki Ota 11873db5b9f7SMasaki Ota static int alps_decode_ss4_v2(struct alps_fields *f, 11883db5b9f7SMasaki Ota unsigned char *p, struct psmouse *psmouse) 11893db5b9f7SMasaki Ota { 11903db5b9f7SMasaki Ota struct alps_data *priv = psmouse->private; 11913db5b9f7SMasaki Ota unsigned char pkt_id; 11923db5b9f7SMasaki Ota unsigned int no_data_x, no_data_y; 11933db5b9f7SMasaki Ota 11943db5b9f7SMasaki Ota pkt_id = alps_get_pkt_id_ss4_v2(p); 11953db5b9f7SMasaki Ota 11963db5b9f7SMasaki Ota /* Current packet is 1Finger coordinate packet */ 11973db5b9f7SMasaki Ota switch (pkt_id) { 11983db5b9f7SMasaki Ota case SS4_PACKET_ID_ONE: 11993db5b9f7SMasaki Ota f->mt[0].x = SS4_1F_X_V2(p); 12003db5b9f7SMasaki Ota f->mt[0].y = SS4_1F_Y_V2(p); 12013db5b9f7SMasaki Ota f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; 1202a8317763SBen Gamari /* 1203a8317763SBen Gamari * When a button is held the device will give us events 1204a8317763SBen Gamari * with x, y, and pressure of 0. This causes annoying jumps 1205a8317763SBen Gamari * if a touch is released while the button is held. 1206a8317763SBen Gamari * Handle this by claiming zero contacts. 1207a8317763SBen Gamari */ 1208a8317763SBen Gamari f->fingers = f->pressure > 0 ? 1 : 0; 12093db5b9f7SMasaki Ota f->first_mp = 0; 12103db5b9f7SMasaki Ota f->is_mp = 0; 12113db5b9f7SMasaki Ota break; 12123db5b9f7SMasaki Ota 12133db5b9f7SMasaki Ota case SS4_PACKET_ID_TWO: 12143db5b9f7SMasaki Ota if (priv->flags & ALPS_BUTTONPAD) { 12153db5b9f7SMasaki Ota f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); 12163db5b9f7SMasaki Ota f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); 12173db5b9f7SMasaki Ota f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); 12183db5b9f7SMasaki Ota f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); 12193db5b9f7SMasaki Ota } else { 12203db5b9f7SMasaki Ota f->mt[0].x = SS4_STD_MF_X_V2(p, 0); 12213db5b9f7SMasaki Ota f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); 12223db5b9f7SMasaki Ota f->mt[1].x = SS4_STD_MF_X_V2(p, 1); 12233db5b9f7SMasaki Ota f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); 12243db5b9f7SMasaki Ota } 12253db5b9f7SMasaki Ota f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; 12263db5b9f7SMasaki Ota 12273db5b9f7SMasaki Ota if (SS4_IS_MF_CONTINUE(p)) { 12283db5b9f7SMasaki Ota f->first_mp = 1; 12293db5b9f7SMasaki Ota } else { 12303db5b9f7SMasaki Ota f->fingers = 2; 12313db5b9f7SMasaki Ota f->first_mp = 0; 12323db5b9f7SMasaki Ota } 12333db5b9f7SMasaki Ota f->is_mp = 0; 12343db5b9f7SMasaki Ota 12353db5b9f7SMasaki Ota break; 12363db5b9f7SMasaki Ota 12373db5b9f7SMasaki Ota case SS4_PACKET_ID_MULTI: 12383db5b9f7SMasaki Ota if (priv->flags & ALPS_BUTTONPAD) { 12393db5b9f7SMasaki Ota f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); 12403db5b9f7SMasaki Ota f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); 12413db5b9f7SMasaki Ota f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); 12423db5b9f7SMasaki Ota f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); 12433db5b9f7SMasaki Ota no_data_x = SS4_MFPACKET_NO_AX_BL; 12443db5b9f7SMasaki Ota no_data_y = SS4_MFPACKET_NO_AY_BL; 12453db5b9f7SMasaki Ota } else { 12463db5b9f7SMasaki Ota f->mt[2].x = SS4_STD_MF_X_V2(p, 0); 12473db5b9f7SMasaki Ota f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); 12483db5b9f7SMasaki Ota f->mt[3].x = SS4_STD_MF_X_V2(p, 1); 12493db5b9f7SMasaki Ota f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); 12503db5b9f7SMasaki Ota no_data_x = SS4_MFPACKET_NO_AX; 12513db5b9f7SMasaki Ota no_data_y = SS4_MFPACKET_NO_AY; 12523db5b9f7SMasaki Ota } 12533db5b9f7SMasaki Ota 12543db5b9f7SMasaki Ota f->first_mp = 0; 12553db5b9f7SMasaki Ota f->is_mp = 1; 12563db5b9f7SMasaki Ota 12573db5b9f7SMasaki Ota if (SS4_IS_5F_DETECTED(p)) { 12583db5b9f7SMasaki Ota f->fingers = 5; 12593db5b9f7SMasaki Ota } else if (f->mt[3].x == no_data_x && 12603db5b9f7SMasaki Ota f->mt[3].y == no_data_y) { 12613db5b9f7SMasaki Ota f->mt[3].x = 0; 12623db5b9f7SMasaki Ota f->mt[3].y = 0; 12633db5b9f7SMasaki Ota f->fingers = 3; 12643db5b9f7SMasaki Ota } else { 12653db5b9f7SMasaki Ota f->fingers = 4; 12663db5b9f7SMasaki Ota } 12673db5b9f7SMasaki Ota break; 12683db5b9f7SMasaki Ota 12694777ac22SBen Gamari case SS4_PACKET_ID_STICK: 12707229c58cSPaul Donohue /* 12717229c58cSPaul Donohue * x, y, and pressure are decoded in 12727229c58cSPaul Donohue * alps_process_packet_ss4_v2() 12737229c58cSPaul Donohue */ 12747229c58cSPaul Donohue f->first_mp = 0; 12757229c58cSPaul Donohue f->is_mp = 0; 12764777ac22SBen Gamari break; 12774777ac22SBen Gamari 12783db5b9f7SMasaki Ota case SS4_PACKET_ID_IDLE: 12793db5b9f7SMasaki Ota default: 12803db5b9f7SMasaki Ota memset(f, 0, sizeof(struct alps_fields)); 12813db5b9f7SMasaki Ota break; 12823db5b9f7SMasaki Ota } 12833db5b9f7SMasaki Ota 12844777ac22SBen Gamari /* handle buttons */ 12854777ac22SBen Gamari if (pkt_id == SS4_PACKET_ID_STICK) { 12864777ac22SBen Gamari f->ts_left = !!(SS4_BTN_V2(p) & 0x01); 12874777ac22SBen Gamari if (!(priv->flags & ALPS_BUTTONPAD)) { 12884777ac22SBen Gamari f->ts_right = !!(SS4_BTN_V2(p) & 0x02); 12894777ac22SBen Gamari f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); 12904777ac22SBen Gamari } 12914777ac22SBen Gamari } else { 12923db5b9f7SMasaki Ota f->left = !!(SS4_BTN_V2(p) & 0x01); 12933db5b9f7SMasaki Ota if (!(priv->flags & ALPS_BUTTONPAD)) { 12943db5b9f7SMasaki Ota f->right = !!(SS4_BTN_V2(p) & 0x02); 12953db5b9f7SMasaki Ota f->middle = !!(SS4_BTN_V2(p) & 0x04); 12963db5b9f7SMasaki Ota } 12974777ac22SBen Gamari } 12983db5b9f7SMasaki Ota 12993db5b9f7SMasaki Ota return 0; 13003db5b9f7SMasaki Ota } 13013db5b9f7SMasaki Ota 13023db5b9f7SMasaki Ota static void alps_process_packet_ss4_v2(struct psmouse *psmouse) 13033db5b9f7SMasaki Ota { 13043db5b9f7SMasaki Ota struct alps_data *priv = psmouse->private; 13053db5b9f7SMasaki Ota unsigned char *packet = psmouse->packet; 13063db5b9f7SMasaki Ota struct input_dev *dev = psmouse->dev; 13074777ac22SBen Gamari struct input_dev *dev2 = priv->dev2; 13083db5b9f7SMasaki Ota struct alps_fields *f = &priv->f; 13097229c58cSPaul Donohue int x, y, pressure; 13103db5b9f7SMasaki Ota 13113db5b9f7SMasaki Ota memset(f, 0, sizeof(struct alps_fields)); 13123db5b9f7SMasaki Ota priv->decode_fields(f, packet, psmouse); 13133db5b9f7SMasaki Ota if (priv->multi_packet) { 13143db5b9f7SMasaki Ota /* 13153db5b9f7SMasaki Ota * Sometimes the first packet will indicate a multi-packet 13163db5b9f7SMasaki Ota * sequence, but sometimes the next multi-packet would not 13173db5b9f7SMasaki Ota * come. Check for this, and when it happens process the 13183db5b9f7SMasaki Ota * position packet as usual. 13193db5b9f7SMasaki Ota */ 13203db5b9f7SMasaki Ota if (f->is_mp) { 13213db5b9f7SMasaki Ota /* Now process the 1st packet */ 13223db5b9f7SMasaki Ota priv->decode_fields(f, priv->multi_data, psmouse); 13233db5b9f7SMasaki Ota } else { 13243db5b9f7SMasaki Ota priv->multi_packet = 0; 13253db5b9f7SMasaki Ota } 13263db5b9f7SMasaki Ota } 13273db5b9f7SMasaki Ota 13283db5b9f7SMasaki Ota /* 13293db5b9f7SMasaki Ota * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. 13303db5b9f7SMasaki Ota * When it is set, it means 2nd packet comes without 1st packet come. 13313db5b9f7SMasaki Ota */ 13323db5b9f7SMasaki Ota if (f->is_mp) 13333db5b9f7SMasaki Ota return; 13343db5b9f7SMasaki Ota 13353db5b9f7SMasaki Ota /* Save the first packet */ 13363db5b9f7SMasaki Ota if (!priv->multi_packet && f->first_mp) { 13373db5b9f7SMasaki Ota priv->multi_packet = 1; 13383db5b9f7SMasaki Ota memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); 13393db5b9f7SMasaki Ota return; 13403db5b9f7SMasaki Ota } 13413db5b9f7SMasaki Ota 13423db5b9f7SMasaki Ota priv->multi_packet = 0; 13433db5b9f7SMasaki Ota 1344864db929SPaul Donohue /* Report trackstick */ 1345864db929SPaul Donohue if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { 13467229c58cSPaul Donohue if (!(priv->flags & ALPS_DUALPOINT)) { 13477229c58cSPaul Donohue psmouse_warn(psmouse, 13487229c58cSPaul Donohue "Rejected trackstick packet from non DualPoint device"); 13497229c58cSPaul Donohue return; 13507229c58cSPaul Donohue } 13517229c58cSPaul Donohue 13527229c58cSPaul Donohue x = (s8)(((packet[0] & 1) << 7) | (packet[1] & 0x7f)); 13537229c58cSPaul Donohue y = (s8)(((packet[3] & 1) << 7) | (packet[2] & 0x7f)); 13547229c58cSPaul Donohue pressure = (s8)(packet[4] & 0x7f); 13557229c58cSPaul Donohue 13567229c58cSPaul Donohue input_report_rel(dev2, REL_X, x); 13577229c58cSPaul Donohue input_report_rel(dev2, REL_Y, -y); 13587229c58cSPaul Donohue input_report_abs(dev2, ABS_PRESSURE, pressure); 13597229c58cSPaul Donohue 1360864db929SPaul Donohue input_report_key(dev2, BTN_LEFT, f->ts_left); 1361864db929SPaul Donohue input_report_key(dev2, BTN_RIGHT, f->ts_right); 1362864db929SPaul Donohue input_report_key(dev2, BTN_MIDDLE, f->ts_middle); 13637229c58cSPaul Donohue 1364864db929SPaul Donohue input_sync(dev2); 1365864db929SPaul Donohue return; 1366864db929SPaul Donohue } 1367864db929SPaul Donohue 1368864db929SPaul Donohue /* Report touchpad */ 13693db5b9f7SMasaki Ota alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); 13703db5b9f7SMasaki Ota 13713db5b9f7SMasaki Ota input_mt_report_finger_count(dev, f->fingers); 13723db5b9f7SMasaki Ota 13733db5b9f7SMasaki Ota input_report_key(dev, BTN_LEFT, f->left); 13743db5b9f7SMasaki Ota input_report_key(dev, BTN_RIGHT, f->right); 13753db5b9f7SMasaki Ota input_report_key(dev, BTN_MIDDLE, f->middle); 13763db5b9f7SMasaki Ota 13773db5b9f7SMasaki Ota input_report_abs(dev, ABS_PRESSURE, f->pressure); 13783db5b9f7SMasaki Ota input_sync(dev); 13793db5b9f7SMasaki Ota } 13803db5b9f7SMasaki Ota 13813db5b9f7SMasaki Ota static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) 13823db5b9f7SMasaki Ota { 13833db5b9f7SMasaki Ota if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) 13843db5b9f7SMasaki Ota return false; 13853db5b9f7SMasaki Ota if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) 13863db5b9f7SMasaki Ota return false; 13873db5b9f7SMasaki Ota return true; 13883db5b9f7SMasaki Ota } 13893db5b9f7SMasaki Ota 139004aae283SPali Rohár static DEFINE_MUTEX(alps_mutex); 139104aae283SPali Rohár 139204aae283SPali Rohár static void alps_register_bare_ps2_mouse(struct work_struct *work) 139304aae283SPali Rohár { 139404aae283SPali Rohár struct alps_data *priv = 139504aae283SPali Rohár container_of(work, struct alps_data, dev3_register_work.work); 139604aae283SPali Rohár struct psmouse *psmouse = priv->psmouse; 139704aae283SPali Rohár struct input_dev *dev3; 139804aae283SPali Rohár int error = 0; 139904aae283SPali Rohár 140004aae283SPali Rohár mutex_lock(&alps_mutex); 140104aae283SPali Rohár 140204aae283SPali Rohár if (priv->dev3) 140304aae283SPali Rohár goto out; 140404aae283SPali Rohár 140504aae283SPali Rohár dev3 = input_allocate_device(); 140604aae283SPali Rohár if (!dev3) { 140704aae283SPali Rohár psmouse_err(psmouse, "failed to allocate secondary device\n"); 140804aae283SPali Rohár error = -ENOMEM; 140904aae283SPali Rohár goto out; 141004aae283SPali Rohár } 141104aae283SPali Rohár 141204aae283SPali Rohár snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", 141304aae283SPali Rohár psmouse->ps2dev.serio->phys, 141404aae283SPali Rohár (priv->dev2 ? "input2" : "input1")); 141504aae283SPali Rohár dev3->phys = priv->phys3; 141604aae283SPali Rohár 141704aae283SPali Rohár /* 141804aae283SPali Rohár * format of input device name is: "protocol vendor name" 141904aae283SPali Rohár * see function psmouse_switch_protocol() in psmouse-base.c 142004aae283SPali Rohár */ 142104aae283SPali Rohár dev3->name = "PS/2 ALPS Mouse"; 142204aae283SPali Rohár 142304aae283SPali Rohár dev3->id.bustype = BUS_I8042; 142404aae283SPali Rohár dev3->id.vendor = 0x0002; 142504aae283SPali Rohár dev3->id.product = PSMOUSE_PS2; 142604aae283SPali Rohár dev3->id.version = 0x0000; 142704aae283SPali Rohár dev3->dev.parent = &psmouse->ps2dev.serio->dev; 142804aae283SPali Rohár 142904aae283SPali Rohár input_set_capability(dev3, EV_REL, REL_X); 143004aae283SPali Rohár input_set_capability(dev3, EV_REL, REL_Y); 143104aae283SPali Rohár input_set_capability(dev3, EV_KEY, BTN_LEFT); 143204aae283SPali Rohár input_set_capability(dev3, EV_KEY, BTN_RIGHT); 143304aae283SPali Rohár input_set_capability(dev3, EV_KEY, BTN_MIDDLE); 143404aae283SPali Rohár 143504aae283SPali Rohár __set_bit(INPUT_PROP_POINTER, dev3->propbit); 143604aae283SPali Rohár 143704aae283SPali Rohár error = input_register_device(dev3); 143804aae283SPali Rohár if (error) { 143904aae283SPali Rohár psmouse_err(psmouse, 144004aae283SPali Rohár "failed to register secondary device: %d\n", 144104aae283SPali Rohár error); 144204aae283SPali Rohár input_free_device(dev3); 144304aae283SPali Rohár goto out; 144404aae283SPali Rohár } 144504aae283SPali Rohár 144604aae283SPali Rohár priv->dev3 = dev3; 144704aae283SPali Rohár 144804aae283SPali Rohár out: 144904aae283SPali Rohár /* 145004aae283SPali Rohár * Save the error code so that we can detect that we 145104aae283SPali Rohár * already tried to create the device. 145204aae283SPali Rohár */ 145304aae283SPali Rohár if (error) 145404aae283SPali Rohár priv->dev3 = ERR_PTR(error); 145504aae283SPali Rohár 145604aae283SPali Rohár mutex_unlock(&alps_mutex); 145704aae283SPali Rohár } 145804aae283SPali Rohár 145959c30afbSHans de Goede static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 14601d9f2626SSebastian Kapfer unsigned char packet[], 14611d9f2626SSebastian Kapfer bool report_buttons) 14621d9f2626SSebastian Kapfer { 146359c30afbSHans de Goede struct alps_data *priv = psmouse->private; 14646bcca19fSHans de Goede struct input_dev *dev, *dev2 = NULL; 146559c30afbSHans de Goede 1466e3a79212SHans de Goede /* Figure out which device to use to report the bare packet */ 1467e3a79212SHans de Goede if (priv->proto_version == ALPS_PROTO_V2 && 1468e3a79212SHans de Goede (priv->flags & ALPS_DUALPOINT)) { 1469e3a79212SHans de Goede /* On V2 devices the DualPoint Stick reports bare packets */ 1470e3a79212SHans de Goede dev = priv->dev2; 14716bcca19fSHans de Goede dev2 = psmouse->dev; 1472e3a79212SHans de Goede } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { 147359c30afbSHans de Goede /* Register dev3 mouse if we received PS/2 packet first time */ 147459c30afbSHans de Goede if (!IS_ERR(priv->dev3)) 147559c30afbSHans de Goede psmouse_queue_work(psmouse, &priv->dev3_register_work, 147659c30afbSHans de Goede 0); 147759c30afbSHans de Goede return; 147859c30afbSHans de Goede } else { 147959c30afbSHans de Goede dev = priv->dev3; 148059c30afbSHans de Goede } 148159c30afbSHans de Goede 14821d9f2626SSebastian Kapfer if (report_buttons) 14836bcca19fSHans de Goede alps_report_buttons(dev, dev2, 14841d9f2626SSebastian Kapfer packet[0] & 1, packet[0] & 2, packet[0] & 4); 14851d9f2626SSebastian Kapfer 148604aae283SPali Rohár input_report_rel(dev, REL_X, 14871d9f2626SSebastian Kapfer packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); 148804aae283SPali Rohár input_report_rel(dev, REL_Y, 14891d9f2626SSebastian Kapfer packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); 14901d9f2626SSebastian Kapfer 149104aae283SPali Rohár input_sync(dev); 14921d9f2626SSebastian Kapfer } 14931d9f2626SSebastian Kapfer 14941d9f2626SSebastian Kapfer static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) 14951da177e4SLinus Torvalds { 14961da177e4SLinus Torvalds struct alps_data *priv = psmouse->private; 14971da177e4SLinus Torvalds 14981d9f2626SSebastian Kapfer if (psmouse->pktcnt < 6) 14991d9f2626SSebastian Kapfer return PSMOUSE_GOOD_DATA; 15001d9f2626SSebastian Kapfer 15011d9f2626SSebastian Kapfer if (psmouse->pktcnt == 6) { 15021d9f2626SSebastian Kapfer /* 15031d9f2626SSebastian Kapfer * Start a timer to flush the packet if it ends up last 15041d9f2626SSebastian Kapfer * 6-byte packet in the stream. Timer needs to fire 15051d9f2626SSebastian Kapfer * psmouse core times out itself. 20 ms should be enough 15061d9f2626SSebastian Kapfer * to decide if we are getting more data or not. 15071d9f2626SSebastian Kapfer */ 15081d9f2626SSebastian Kapfer mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); 15091d9f2626SSebastian Kapfer return PSMOUSE_GOOD_DATA; 15101d9f2626SSebastian Kapfer } 15111d9f2626SSebastian Kapfer 15121d9f2626SSebastian Kapfer del_timer(&priv->timer); 15131d9f2626SSebastian Kapfer 15141d9f2626SSebastian Kapfer if (psmouse->packet[6] & 0x80) { 15151d9f2626SSebastian Kapfer 15161d9f2626SSebastian Kapfer /* 15171d9f2626SSebastian Kapfer * Highest bit is set - that means we either had 15181d9f2626SSebastian Kapfer * complete ALPS packet and this is start of the 15191d9f2626SSebastian Kapfer * next packet or we got garbage. 15201d9f2626SSebastian Kapfer */ 15211d9f2626SSebastian Kapfer 15221d9f2626SSebastian Kapfer if (((psmouse->packet[3] | 15231d9f2626SSebastian Kapfer psmouse->packet[4] | 15241d9f2626SSebastian Kapfer psmouse->packet[5]) & 0x80) || 152599df65e7SKevin Cernekee (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { 1526b5d21704SDmitry Torokhov psmouse_dbg(psmouse, 15273b112923SAndy Shevchenko "refusing packet %4ph (suspected interleaved ps/2)\n", 15283b112923SAndy Shevchenko psmouse->packet + 3); 15291d9f2626SSebastian Kapfer return PSMOUSE_BAD_DATA; 15301d9f2626SSebastian Kapfer } 15311d9f2626SSebastian Kapfer 153224af5cb9SKevin Cernekee priv->process_packet(psmouse); 15331d9f2626SSebastian Kapfer 15341d9f2626SSebastian Kapfer /* Continue with the next packet */ 15351d9f2626SSebastian Kapfer psmouse->packet[0] = psmouse->packet[6]; 15361d9f2626SSebastian Kapfer psmouse->pktcnt = 1; 15371d9f2626SSebastian Kapfer 15381d9f2626SSebastian Kapfer } else { 15391d9f2626SSebastian Kapfer 15401d9f2626SSebastian Kapfer /* 15411d9f2626SSebastian Kapfer * High bit is 0 - that means that we indeed got a PS/2 15421d9f2626SSebastian Kapfer * packet in the middle of ALPS packet. 15431d9f2626SSebastian Kapfer * 15441d9f2626SSebastian Kapfer * There is also possibility that we got 6-byte ALPS 15451d9f2626SSebastian Kapfer * packet followed by 3-byte packet from trackpoint. We 15461d9f2626SSebastian Kapfer * can not distinguish between these 2 scenarios but 1547b5d21704SDmitry Torokhov * because the latter is unlikely to happen in course of 15481d9f2626SSebastian Kapfer * normal operation (user would need to press all 15491d9f2626SSebastian Kapfer * buttons on the pad and start moving trackpoint 15501d9f2626SSebastian Kapfer * without touching the pad surface) we assume former. 15511d9f2626SSebastian Kapfer * Even if we are wrong the wost thing that would happen 15521d9f2626SSebastian Kapfer * the cursor would jump but we should not get protocol 1553b5d21704SDmitry Torokhov * de-synchronization. 15541d9f2626SSebastian Kapfer */ 15551d9f2626SSebastian Kapfer 155659c30afbSHans de Goede alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], 155759c30afbSHans de Goede false); 15581d9f2626SSebastian Kapfer 15591d9f2626SSebastian Kapfer /* 15601d9f2626SSebastian Kapfer * Continue with the standard ALPS protocol handling, 15611d9f2626SSebastian Kapfer * but make sure we won't process it as an interleaved 15621d9f2626SSebastian Kapfer * packet again, which may happen if all buttons are 15631d9f2626SSebastian Kapfer * pressed. To avoid this let's reset the 4th bit which 15641d9f2626SSebastian Kapfer * is normally 1. 15651d9f2626SSebastian Kapfer */ 15661d9f2626SSebastian Kapfer psmouse->packet[3] = psmouse->packet[6] & 0xf7; 15671d9f2626SSebastian Kapfer psmouse->pktcnt = 4; 15681d9f2626SSebastian Kapfer } 15691d9f2626SSebastian Kapfer 15701d9f2626SSebastian Kapfer return PSMOUSE_GOOD_DATA; 15711d9f2626SSebastian Kapfer } 15721d9f2626SSebastian Kapfer 15731d9f2626SSebastian Kapfer static void alps_flush_packet(unsigned long data) 15741d9f2626SSebastian Kapfer { 15751d9f2626SSebastian Kapfer struct psmouse *psmouse = (struct psmouse *)data; 157624af5cb9SKevin Cernekee struct alps_data *priv = psmouse->private; 15771d9f2626SSebastian Kapfer 15781d9f2626SSebastian Kapfer serio_pause_rx(psmouse->ps2dev.serio); 15791d9f2626SSebastian Kapfer 1580b46615feSSeth Forshee if (psmouse->pktcnt == psmouse->pktsize) { 15811d9f2626SSebastian Kapfer 15821d9f2626SSebastian Kapfer /* 15831d9f2626SSebastian Kapfer * We did not any more data in reasonable amount of time. 15841d9f2626SSebastian Kapfer * Validate the last 3 bytes and process as a standard 15851d9f2626SSebastian Kapfer * ALPS packet. 15861d9f2626SSebastian Kapfer */ 15871d9f2626SSebastian Kapfer if ((psmouse->packet[3] | 15881d9f2626SSebastian Kapfer psmouse->packet[4] | 15891d9f2626SSebastian Kapfer psmouse->packet[5]) & 0x80) { 1590b5d21704SDmitry Torokhov psmouse_dbg(psmouse, 15913b112923SAndy Shevchenko "refusing packet %3ph (suspected interleaved ps/2)\n", 15923b112923SAndy Shevchenko psmouse->packet + 3); 15931d9f2626SSebastian Kapfer } else { 159424af5cb9SKevin Cernekee priv->process_packet(psmouse); 15951d9f2626SSebastian Kapfer } 15961d9f2626SSebastian Kapfer psmouse->pktcnt = 0; 15971d9f2626SSebastian Kapfer } 15981d9f2626SSebastian Kapfer 15991d9f2626SSebastian Kapfer serio_continue_rx(psmouse->ps2dev.serio); 16001d9f2626SSebastian Kapfer } 16011d9f2626SSebastian Kapfer 16021d9f2626SSebastian Kapfer static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) 16031d9f2626SSebastian Kapfer { 16041d9f2626SSebastian Kapfer struct alps_data *priv = psmouse->private; 16051d9f2626SSebastian Kapfer 16064ab8f7f3SPali Rohár /* 16074ab8f7f3SPali Rohár * Check if we are dealing with a bare PS/2 packet, presumably from 16084ab8f7f3SPali Rohár * a device connected to the external PS/2 port. Because bare PS/2 16094ab8f7f3SPali Rohár * protocol does not have enough constant bits to self-synchronize 16104ab8f7f3SPali Rohár * properly we only do this if the device is fully synchronized. 16113db5b9f7SMasaki Ota * Can not distinguish V8's first byte from PS/2 packet's 16124ab8f7f3SPali Rohár */ 16133db5b9f7SMasaki Ota if (priv->proto_version != ALPS_PROTO_V8 && 16143db5b9f7SMasaki Ota !psmouse->out_of_sync_cnt && 16153db5b9f7SMasaki Ota (psmouse->packet[0] & 0xc8) == 0x08) { 16163db5b9f7SMasaki Ota 16171da177e4SLinus Torvalds if (psmouse->pktcnt == 3) { 161859c30afbSHans de Goede alps_report_bare_ps2_packet(psmouse, psmouse->packet, 16191d9f2626SSebastian Kapfer true); 16201da177e4SLinus Torvalds return PSMOUSE_FULL_PACKET; 16211da177e4SLinus Torvalds } 16221da177e4SLinus Torvalds return PSMOUSE_GOOD_DATA; 16231da177e4SLinus Torvalds } 16241da177e4SLinus Torvalds 16251d9f2626SSebastian Kapfer /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ 16261d9f2626SSebastian Kapfer 162799df65e7SKevin Cernekee if ((priv->flags & ALPS_PS2_INTERLEAVED) && 16281d9f2626SSebastian Kapfer psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { 16291d9f2626SSebastian Kapfer return alps_handle_interleaved_ps2(psmouse); 16301d9f2626SSebastian Kapfer } 16311d9f2626SSebastian Kapfer 163299df65e7SKevin Cernekee if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { 1633b5d21704SDmitry Torokhov psmouse_dbg(psmouse, 1634b5d21704SDmitry Torokhov "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", 163599df65e7SKevin Cernekee psmouse->packet[0], priv->mask0, priv->byte0); 16361da177e4SLinus Torvalds return PSMOUSE_BAD_DATA; 16371d9f2626SSebastian Kapfer } 16381da177e4SLinus Torvalds 1639b46615feSSeth Forshee /* Bytes 2 - pktsize should have 0 in the highest bit */ 1640a7ef82aeSPali Rohár if (priv->proto_version < ALPS_PROTO_V5 && 164175af9e56SDave Turvene psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && 16421d9f2626SSebastian Kapfer (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { 1643b5d21704SDmitry Torokhov psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 1644b5d21704SDmitry Torokhov psmouse->pktcnt - 1, 1645b5d21704SDmitry Torokhov psmouse->packet[psmouse->pktcnt - 1]); 1646a7ef82aeSPali Rohár 1647fb2dd7a6SDmitry Torokhov if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && 1648a7ef82aeSPali Rohár psmouse->pktcnt == psmouse->pktsize) { 1649a7ef82aeSPali Rohár /* 1650a7ef82aeSPali Rohár * Some Dell boxes, such as Latitude E6440 or E7440 1651a7ef82aeSPali Rohár * with closed lid, quite often smash last byte of 1652a7ef82aeSPali Rohár * otherwise valid packet with 0xff. Given that the 1653a7ef82aeSPali Rohár * next packet is very likely to be valid let's 1654a7ef82aeSPali Rohár * report PSMOUSE_FULL_PACKET but not process data, 1655a7ef82aeSPali Rohár * rather than reporting PSMOUSE_BAD_DATA and 1656a7ef82aeSPali Rohár * filling the logs. 1657a7ef82aeSPali Rohár */ 1658a7ef82aeSPali Rohár return PSMOUSE_FULL_PACKET; 1659a7ef82aeSPali Rohár } 1660a7ef82aeSPali Rohár 16611da177e4SLinus Torvalds return PSMOUSE_BAD_DATA; 16621d9f2626SSebastian Kapfer } 16631da177e4SLinus Torvalds 16643db5b9f7SMasaki Ota if ((priv->proto_version == ALPS_PROTO_V7 && 16653db5b9f7SMasaki Ota !alps_is_valid_package_v7(psmouse)) || 16663db5b9f7SMasaki Ota (priv->proto_version == ALPS_PROTO_V8 && 16673db5b9f7SMasaki Ota !alps_is_valid_package_ss4_v2(psmouse))) { 16683808843cSYunkang Tang psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", 16693808843cSYunkang Tang psmouse->pktcnt - 1, 16703808843cSYunkang Tang psmouse->packet[psmouse->pktcnt - 1]); 16713808843cSYunkang Tang return PSMOUSE_BAD_DATA; 16723808843cSYunkang Tang } 16733808843cSYunkang Tang 1674b46615feSSeth Forshee if (psmouse->pktcnt == psmouse->pktsize) { 167524af5cb9SKevin Cernekee priv->process_packet(psmouse); 16761da177e4SLinus Torvalds return PSMOUSE_FULL_PACKET; 16771da177e4SLinus Torvalds } 16781da177e4SLinus Torvalds 16791da177e4SLinus Torvalds return PSMOUSE_GOOD_DATA; 16801da177e4SLinus Torvalds } 16811da177e4SLinus Torvalds 168225bded7cSSeth Forshee static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) 168325bded7cSSeth Forshee { 168425bded7cSSeth Forshee struct ps2dev *ps2dev = &psmouse->ps2dev; 168525bded7cSSeth Forshee struct alps_data *priv = psmouse->private; 168625bded7cSSeth Forshee int command; 168725bded7cSSeth Forshee unsigned char *param; 168825bded7cSSeth Forshee unsigned char dummy[4]; 168925bded7cSSeth Forshee 169025bded7cSSeth Forshee BUG_ON(nibble > 0xf); 169125bded7cSSeth Forshee 169225bded7cSSeth Forshee command = priv->nibble_commands[nibble].command; 169325bded7cSSeth Forshee param = (command & 0x0f00) ? 169425bded7cSSeth Forshee dummy : (unsigned char *)&priv->nibble_commands[nibble].data; 169525bded7cSSeth Forshee 169625bded7cSSeth Forshee if (ps2_command(ps2dev, param, command)) 169725bded7cSSeth Forshee return -1; 169825bded7cSSeth Forshee 169925bded7cSSeth Forshee return 0; 170025bded7cSSeth Forshee } 170125bded7cSSeth Forshee 170225bded7cSSeth Forshee static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) 170325bded7cSSeth Forshee { 170425bded7cSSeth Forshee struct ps2dev *ps2dev = &psmouse->ps2dev; 170525bded7cSSeth Forshee struct alps_data *priv = psmouse->private; 170625bded7cSSeth Forshee int i, nibble; 170725bded7cSSeth Forshee 170825bded7cSSeth Forshee if (ps2_command(ps2dev, NULL, priv->addr_command)) 170925bded7cSSeth Forshee return -1; 171025bded7cSSeth Forshee 171125bded7cSSeth Forshee for (i = 12; i >= 0; i -= 4) { 171225bded7cSSeth Forshee nibble = (addr >> i) & 0xf; 171325bded7cSSeth Forshee if (alps_command_mode_send_nibble(psmouse, nibble)) 171425bded7cSSeth Forshee return -1; 171525bded7cSSeth Forshee } 171625bded7cSSeth Forshee 171725bded7cSSeth Forshee return 0; 171825bded7cSSeth Forshee } 171925bded7cSSeth Forshee 172025bded7cSSeth Forshee static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 172125bded7cSSeth Forshee { 172225bded7cSSeth Forshee struct ps2dev *ps2dev = &psmouse->ps2dev; 172325bded7cSSeth Forshee unsigned char param[4]; 172425bded7cSSeth Forshee 172525bded7cSSeth Forshee if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 172625bded7cSSeth Forshee return -1; 172725bded7cSSeth Forshee 172825bded7cSSeth Forshee /* 172925bded7cSSeth Forshee * The address being read is returned in the first two bytes 173025bded7cSSeth Forshee * of the result. Check that this address matches the expected 173125bded7cSSeth Forshee * address. 173225bded7cSSeth Forshee */ 173325bded7cSSeth Forshee if (addr != ((param[0] << 8) | param[1])) 173425bded7cSSeth Forshee return -1; 173525bded7cSSeth Forshee 173625bded7cSSeth Forshee return param[2]; 173725bded7cSSeth Forshee } 173825bded7cSSeth Forshee 173925bded7cSSeth Forshee static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) 174025bded7cSSeth Forshee { 174125bded7cSSeth Forshee if (alps_command_mode_set_addr(psmouse, addr)) 174225bded7cSSeth Forshee return -1; 174325bded7cSSeth Forshee return __alps_command_mode_read_reg(psmouse, addr); 174425bded7cSSeth Forshee } 174525bded7cSSeth Forshee 174625bded7cSSeth Forshee static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) 174725bded7cSSeth Forshee { 174825bded7cSSeth Forshee if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) 174925bded7cSSeth Forshee return -1; 175025bded7cSSeth Forshee if (alps_command_mode_send_nibble(psmouse, value & 0xf)) 175125bded7cSSeth Forshee return -1; 175225bded7cSSeth Forshee return 0; 175325bded7cSSeth Forshee } 175425bded7cSSeth Forshee 175525bded7cSSeth Forshee static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, 175625bded7cSSeth Forshee u8 value) 175725bded7cSSeth Forshee { 175825bded7cSSeth Forshee if (alps_command_mode_set_addr(psmouse, addr)) 175925bded7cSSeth Forshee return -1; 176025bded7cSSeth Forshee return __alps_command_mode_write_reg(psmouse, value); 176125bded7cSSeth Forshee } 176225bded7cSSeth Forshee 176324ba9707SKevin Cernekee static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, 176424ba9707SKevin Cernekee int repeated_command, unsigned char *param) 176524ba9707SKevin Cernekee { 176624ba9707SKevin Cernekee struct ps2dev *ps2dev = &psmouse->ps2dev; 176724ba9707SKevin Cernekee 176824ba9707SKevin Cernekee param[0] = 0; 176924ba9707SKevin Cernekee if (init_command && ps2_command(ps2dev, param, init_command)) 177024ba9707SKevin Cernekee return -EIO; 177124ba9707SKevin Cernekee 177224ba9707SKevin Cernekee if (ps2_command(ps2dev, NULL, repeated_command) || 177324ba9707SKevin Cernekee ps2_command(ps2dev, NULL, repeated_command) || 177424ba9707SKevin Cernekee ps2_command(ps2dev, NULL, repeated_command)) 177524ba9707SKevin Cernekee return -EIO; 177624ba9707SKevin Cernekee 177724ba9707SKevin Cernekee param[0] = param[1] = param[2] = 0xff; 177824ba9707SKevin Cernekee if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 177924ba9707SKevin Cernekee return -EIO; 178024ba9707SKevin Cernekee 178139fbe585SDmitry Torokhov psmouse_dbg(psmouse, "%2.2X report: %3ph\n", 178239fbe585SDmitry Torokhov repeated_command, param); 178324ba9707SKevin Cernekee return 0; 178424ba9707SKevin Cernekee } 178524ba9707SKevin Cernekee 17863808843cSYunkang Tang static bool alps_check_valid_firmware_id(unsigned char id[]) 17873808843cSYunkang Tang { 17883808843cSYunkang Tang if (id[0] == 0x73) 17893808843cSYunkang Tang return true; 17903808843cSYunkang Tang 17913808843cSYunkang Tang if (id[0] == 0x88 && 17923808843cSYunkang Tang (id[1] == 0x07 || 17933808843cSYunkang Tang id[1] == 0x08 || 17943808843cSYunkang Tang (id[1] & 0xf0) == 0xb0 || 17953808843cSYunkang Tang (id[1] & 0xf0) == 0xc0)) { 17963808843cSYunkang Tang return true; 17973808843cSYunkang Tang } 17983808843cSYunkang Tang 17993808843cSYunkang Tang return false; 18003808843cSYunkang Tang } 18013808843cSYunkang Tang 1802d18e53fcSKevin Cernekee static int alps_enter_command_mode(struct psmouse *psmouse) 180325bded7cSSeth Forshee { 180425bded7cSSeth Forshee unsigned char param[4]; 180525bded7cSSeth Forshee 180624ba9707SKevin Cernekee if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { 180725bded7cSSeth Forshee psmouse_err(psmouse, "failed to enter command mode\n"); 180825bded7cSSeth Forshee return -1; 180925bded7cSSeth Forshee } 181025bded7cSSeth Forshee 18113808843cSYunkang Tang if (!alps_check_valid_firmware_id(param)) { 181225bded7cSSeth Forshee psmouse_dbg(psmouse, 181324ba9707SKevin Cernekee "unknown response while entering command mode\n"); 181425bded7cSSeth Forshee return -1; 181525bded7cSSeth Forshee } 181625bded7cSSeth Forshee return 0; 181725bded7cSSeth Forshee } 181825bded7cSSeth Forshee 181925bded7cSSeth Forshee static inline int alps_exit_command_mode(struct psmouse *psmouse) 182025bded7cSSeth Forshee { 182125bded7cSSeth Forshee struct ps2dev *ps2dev = &psmouse->ps2dev; 182225bded7cSSeth Forshee if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) 182325bded7cSSeth Forshee return -1; 182425bded7cSSeth Forshee return 0; 182525bded7cSSeth Forshee } 182625bded7cSSeth Forshee 18271da177e4SLinus Torvalds /* 18281da177e4SLinus Torvalds * For DualPoint devices select the device that should respond to 18291da177e4SLinus Torvalds * subsequent commands. It looks like glidepad is behind stickpointer, 18301da177e4SLinus Torvalds * I'd thought it would be other way around... 18311da177e4SLinus Torvalds */ 183225bded7cSSeth Forshee static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) 18331da177e4SLinus Torvalds { 18341da177e4SLinus Torvalds struct ps2dev *ps2dev = &psmouse->ps2dev; 18351da177e4SLinus Torvalds int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; 18361da177e4SLinus Torvalds 18371da177e4SLinus Torvalds if (ps2_command(ps2dev, NULL, cmd) || 18381da177e4SLinus Torvalds ps2_command(ps2dev, NULL, cmd) || 18391da177e4SLinus Torvalds ps2_command(ps2dev, NULL, cmd) || 18401da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 18411da177e4SLinus Torvalds return -1; 18421da177e4SLinus Torvalds 18431da177e4SLinus Torvalds /* we may get 3 more bytes, just ignore them */ 1844c611763dSDmitry Torokhov ps2_drain(ps2dev, 3, 100); 18451da177e4SLinus Torvalds 18461da177e4SLinus Torvalds return 0; 18471da177e4SLinus Torvalds } 18481da177e4SLinus Torvalds 184925bded7cSSeth Forshee static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) 18501da177e4SLinus Torvalds { 18511da177e4SLinus Torvalds struct ps2dev *ps2dev = &psmouse->ps2dev; 18521da177e4SLinus Torvalds 18531da177e4SLinus Torvalds /* Try ALPS magic knock - 4 disable before enable */ 18541da177e4SLinus Torvalds if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 18551da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 18561da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 18571da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 18581da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) 18591da177e4SLinus Torvalds return -1; 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds /* 18621da177e4SLinus Torvalds * Switch mouse to poll (remote) mode so motion data will not 18631da177e4SLinus Torvalds * get in our way 18641da177e4SLinus Torvalds */ 18651da177e4SLinus Torvalds return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); 18661da177e4SLinus Torvalds } 18671da177e4SLinus Torvalds 186895f75e91SYunkang Tang static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) 186995f75e91SYunkang Tang { 187095f75e91SYunkang Tang int i, nibble; 187195f75e91SYunkang Tang 187295f75e91SYunkang Tang /* 187395f75e91SYunkang Tang * b0-b11 are valid bits, send sequence is inverse. 187495f75e91SYunkang Tang * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 187595f75e91SYunkang Tang */ 187695f75e91SYunkang Tang for (i = 0; i <= 8; i += 4) { 187795f75e91SYunkang Tang nibble = (word >> i) & 0xf; 187895f75e91SYunkang Tang if (alps_command_mode_send_nibble(psmouse, nibble)) 187995f75e91SYunkang Tang return -1; 188095f75e91SYunkang Tang } 188195f75e91SYunkang Tang 188295f75e91SYunkang Tang return 0; 188395f75e91SYunkang Tang } 188495f75e91SYunkang Tang 188595f75e91SYunkang Tang static int alps_monitor_mode_write_reg(struct psmouse *psmouse, 188695f75e91SYunkang Tang u16 addr, u16 value) 188795f75e91SYunkang Tang { 188895f75e91SYunkang Tang struct ps2dev *ps2dev = &psmouse->ps2dev; 188995f75e91SYunkang Tang 189095f75e91SYunkang Tang /* 0x0A0 is the command to write the word */ 189195f75e91SYunkang Tang if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || 189295f75e91SYunkang Tang alps_monitor_mode_send_word(psmouse, 0x0A0) || 189395f75e91SYunkang Tang alps_monitor_mode_send_word(psmouse, addr) || 189495f75e91SYunkang Tang alps_monitor_mode_send_word(psmouse, value) || 189595f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) 189695f75e91SYunkang Tang return -1; 189795f75e91SYunkang Tang 189895f75e91SYunkang Tang return 0; 189995f75e91SYunkang Tang } 190095f75e91SYunkang Tang 190195f75e91SYunkang Tang static int alps_monitor_mode(struct psmouse *psmouse, bool enable) 190295f75e91SYunkang Tang { 190395f75e91SYunkang Tang struct ps2dev *ps2dev = &psmouse->ps2dev; 190495f75e91SYunkang Tang 190595f75e91SYunkang Tang if (enable) { 190695f75e91SYunkang Tang /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ 190795f75e91SYunkang Tang if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 190895f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || 190995f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 191095f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 191195f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 191295f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 191395f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || 191495f75e91SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) 191595f75e91SYunkang Tang return -1; 191695f75e91SYunkang Tang } else { 191795f75e91SYunkang Tang /* EC to exit monitor mode */ 191895f75e91SYunkang Tang if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) 191995f75e91SYunkang Tang return -1; 192095f75e91SYunkang Tang } 192195f75e91SYunkang Tang 192295f75e91SYunkang Tang return 0; 192395f75e91SYunkang Tang } 192495f75e91SYunkang Tang 192595f75e91SYunkang Tang static int alps_absolute_mode_v6(struct psmouse *psmouse) 192695f75e91SYunkang Tang { 192795f75e91SYunkang Tang u16 reg_val = 0x181; 192895f75e91SYunkang Tang int ret = -1; 192995f75e91SYunkang Tang 193095f75e91SYunkang Tang /* enter monitor mode, to write the register */ 193195f75e91SYunkang Tang if (alps_monitor_mode(psmouse, true)) 193295f75e91SYunkang Tang return -1; 193395f75e91SYunkang Tang 193495f75e91SYunkang Tang ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); 193595f75e91SYunkang Tang 193695f75e91SYunkang Tang if (alps_monitor_mode(psmouse, false)) 193795f75e91SYunkang Tang ret = -1; 193895f75e91SYunkang Tang 193995f75e91SYunkang Tang return ret; 194095f75e91SYunkang Tang } 194195f75e91SYunkang Tang 19421da177e4SLinus Torvalds static int alps_get_status(struct psmouse *psmouse, char *param) 19431da177e4SLinus Torvalds { 19441da177e4SLinus Torvalds /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 194524ba9707SKevin Cernekee if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) 19461da177e4SLinus Torvalds return -1; 19471da177e4SLinus Torvalds 19481da177e4SLinus Torvalds return 0; 19491da177e4SLinus Torvalds } 19501da177e4SLinus Torvalds 19511da177e4SLinus Torvalds /* 19521da177e4SLinus Torvalds * Turn touchpad tapping on or off. The sequences are: 19531da177e4SLinus Torvalds * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, 19541da177e4SLinus Torvalds * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. 19551da177e4SLinus Torvalds * My guess that 0xE9 (GetInfo) is here as a sync point. 19561da177e4SLinus Torvalds * For models that also have stickpointer (DualPoints) its tapping 19571da177e4SLinus Torvalds * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but 19581da177e4SLinus Torvalds * we don't fiddle with it. 19591da177e4SLinus Torvalds */ 19601da177e4SLinus Torvalds static int alps_tap_mode(struct psmouse *psmouse, int enable) 19611da177e4SLinus Torvalds { 19621da177e4SLinus Torvalds struct ps2dev *ps2dev = &psmouse->ps2dev; 19631da177e4SLinus Torvalds int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; 19641da177e4SLinus Torvalds unsigned char tap_arg = enable ? 0x0A : 0x00; 19651da177e4SLinus Torvalds unsigned char param[4]; 19661da177e4SLinus Torvalds 19671da177e4SLinus Torvalds if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || 19681da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 19691da177e4SLinus Torvalds ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || 19701da177e4SLinus Torvalds ps2_command(ps2dev, &tap_arg, cmd)) 19711da177e4SLinus Torvalds return -1; 19721da177e4SLinus Torvalds 19731da177e4SLinus Torvalds if (alps_get_status(psmouse, param)) 19741da177e4SLinus Torvalds return -1; 19751da177e4SLinus Torvalds 19761da177e4SLinus Torvalds return 0; 19771da177e4SLinus Torvalds } 19781da177e4SLinus Torvalds 1979f0d5c6f4SDmitry Torokhov /* 1980f0d5c6f4SDmitry Torokhov * alps_poll() - poll the touchpad for current motion packet. 1981f0d5c6f4SDmitry Torokhov * Used in resync. 1982f0d5c6f4SDmitry Torokhov */ 1983f0d5c6f4SDmitry Torokhov static int alps_poll(struct psmouse *psmouse) 1984f0d5c6f4SDmitry Torokhov { 1985f0d5c6f4SDmitry Torokhov struct alps_data *priv = psmouse->private; 1986b46615feSSeth Forshee unsigned char buf[sizeof(psmouse->packet)]; 1987b7802c5cSDmitry Torokhov bool poll_failed; 1988f0d5c6f4SDmitry Torokhov 198999df65e7SKevin Cernekee if (priv->flags & ALPS_PASS) 199025bded7cSSeth Forshee alps_passthrough_mode_v2(psmouse, true); 1991f0d5c6f4SDmitry Torokhov 1992f0d5c6f4SDmitry Torokhov poll_failed = ps2_command(&psmouse->ps2dev, buf, 1993f0d5c6f4SDmitry Torokhov PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; 1994f0d5c6f4SDmitry Torokhov 199599df65e7SKevin Cernekee if (priv->flags & ALPS_PASS) 199625bded7cSSeth Forshee alps_passthrough_mode_v2(psmouse, false); 1997f0d5c6f4SDmitry Torokhov 199899df65e7SKevin Cernekee if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) 1999f0d5c6f4SDmitry Torokhov return -1; 2000f0d5c6f4SDmitry Torokhov 2001f0d5c6f4SDmitry Torokhov if ((psmouse->badbyte & 0xc8) == 0x08) { 2002f0d5c6f4SDmitry Torokhov /* 2003f0d5c6f4SDmitry Torokhov * Poll the track stick ... 2004f0d5c6f4SDmitry Torokhov */ 2005f0d5c6f4SDmitry Torokhov if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) 2006f0d5c6f4SDmitry Torokhov return -1; 2007f0d5c6f4SDmitry Torokhov } 2008f0d5c6f4SDmitry Torokhov 2009f0d5c6f4SDmitry Torokhov memcpy(psmouse->packet, buf, sizeof(buf)); 2010f0d5c6f4SDmitry Torokhov return 0; 2011f0d5c6f4SDmitry Torokhov } 2012f0d5c6f4SDmitry Torokhov 201325bded7cSSeth Forshee static int alps_hw_init_v1_v2(struct psmouse *psmouse) 20141da177e4SLinus Torvalds { 20151da177e4SLinus Torvalds struct alps_data *priv = psmouse->private; 20161da177e4SLinus Torvalds 201799df65e7SKevin Cernekee if ((priv->flags & ALPS_PASS) && 201825bded7cSSeth Forshee alps_passthrough_mode_v2(psmouse, true)) { 20191da177e4SLinus Torvalds return -1; 2020b7802c5cSDmitry Torokhov } 20211da177e4SLinus Torvalds 2022b7802c5cSDmitry Torokhov if (alps_tap_mode(psmouse, true)) { 2023b5d21704SDmitry Torokhov psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); 20241da177e4SLinus Torvalds return -1; 2025963f626dSPeter Osterlund } 20261da177e4SLinus Torvalds 202725bded7cSSeth Forshee if (alps_absolute_mode_v1_v2(psmouse)) { 2028b5d21704SDmitry Torokhov psmouse_err(psmouse, "Failed to enable absolute mode\n"); 20291da177e4SLinus Torvalds return -1; 20301da177e4SLinus Torvalds } 20311da177e4SLinus Torvalds 203299df65e7SKevin Cernekee if ((priv->flags & ALPS_PASS) && 203325bded7cSSeth Forshee alps_passthrough_mode_v2(psmouse, false)) { 20341da177e4SLinus Torvalds return -1; 2035b7802c5cSDmitry Torokhov } 20361da177e4SLinus Torvalds 20371e0c5b12SDmitry Torokhov /* ALPS needs stream mode, otherwise it won't report any data */ 20381e0c5b12SDmitry Torokhov if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { 2039b5d21704SDmitry Torokhov psmouse_err(psmouse, "Failed to enable stream mode\n"); 20401e0c5b12SDmitry Torokhov return -1; 20411e0c5b12SDmitry Torokhov } 20421e0c5b12SDmitry Torokhov 20431e0c5b12SDmitry Torokhov return 0; 20441e0c5b12SDmitry Torokhov } 20451e0c5b12SDmitry Torokhov 204695f75e91SYunkang Tang static int alps_hw_init_v6(struct psmouse *psmouse) 204795f75e91SYunkang Tang { 204895f75e91SYunkang Tang unsigned char param[2] = {0xC8, 0x14}; 204995f75e91SYunkang Tang 205095f75e91SYunkang Tang /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ 205195f75e91SYunkang Tang if (alps_passthrough_mode_v2(psmouse, true)) 205295f75e91SYunkang Tang return -1; 205395f75e91SYunkang Tang 205495f75e91SYunkang Tang if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 205595f75e91SYunkang Tang ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 205695f75e91SYunkang Tang ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 205795f75e91SYunkang Tang ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 205895f75e91SYunkang Tang ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 205995f75e91SYunkang Tang return -1; 206095f75e91SYunkang Tang 206195f75e91SYunkang Tang if (alps_passthrough_mode_v2(psmouse, false)) 206295f75e91SYunkang Tang return -1; 206395f75e91SYunkang Tang 206495f75e91SYunkang Tang if (alps_absolute_mode_v6(psmouse)) { 206595f75e91SYunkang Tang psmouse_err(psmouse, "Failed to enable absolute mode\n"); 206695f75e91SYunkang Tang return -1; 206795f75e91SYunkang Tang } 206895f75e91SYunkang Tang 206995f75e91SYunkang Tang return 0; 207095f75e91SYunkang Tang } 207195f75e91SYunkang Tang 207225bded7cSSeth Forshee /* 2073cd401204SKevin Cernekee * Enable or disable passthrough mode to the trackstick. 207425bded7cSSeth Forshee */ 2075cd401204SKevin Cernekee static int alps_passthrough_mode_v3(struct psmouse *psmouse, 2076cd401204SKevin Cernekee int reg_base, bool enable) 207725bded7cSSeth Forshee { 2078cd401204SKevin Cernekee int reg_val, ret = -1; 207925bded7cSSeth Forshee 2080d18e53fcSKevin Cernekee if (alps_enter_command_mode(psmouse)) 208125bded7cSSeth Forshee return -1; 208225bded7cSSeth Forshee 2083cd401204SKevin Cernekee reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); 2084cd401204SKevin Cernekee if (reg_val == -1) 2085cd401204SKevin Cernekee goto error; 2086cd401204SKevin Cernekee 208725bded7cSSeth Forshee if (enable) 208825bded7cSSeth Forshee reg_val |= 0x01; 208925bded7cSSeth Forshee else 209025bded7cSSeth Forshee reg_val &= ~0x01; 209125bded7cSSeth Forshee 2092cd401204SKevin Cernekee ret = __alps_command_mode_write_reg(psmouse, reg_val); 209325bded7cSSeth Forshee 2094cd401204SKevin Cernekee error: 2095cd401204SKevin Cernekee if (alps_exit_command_mode(psmouse)) 2096cd401204SKevin Cernekee ret = -1; 2097cd401204SKevin Cernekee return ret; 209825bded7cSSeth Forshee } 209925bded7cSSeth Forshee 210025bded7cSSeth Forshee /* Must be in command mode when calling this function */ 210125bded7cSSeth Forshee static int alps_absolute_mode_v3(struct psmouse *psmouse) 210225bded7cSSeth Forshee { 210325bded7cSSeth Forshee int reg_val; 210425bded7cSSeth Forshee 210525bded7cSSeth Forshee reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 210625bded7cSSeth Forshee if (reg_val == -1) 210725bded7cSSeth Forshee return -1; 210825bded7cSSeth Forshee 210925bded7cSSeth Forshee reg_val |= 0x06; 211025bded7cSSeth Forshee if (__alps_command_mode_write_reg(psmouse, reg_val)) 211125bded7cSSeth Forshee return -1; 211225bded7cSSeth Forshee 211325bded7cSSeth Forshee return 0; 211425bded7cSSeth Forshee } 211525bded7cSSeth Forshee 2116dae928ecSPali Rohár static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) 211725bded7cSSeth Forshee { 2118cd401204SKevin Cernekee int ret = -EIO, reg_val; 211925bded7cSSeth Forshee 2120d18e53fcSKevin Cernekee if (alps_enter_command_mode(psmouse)) 212125bded7cSSeth Forshee goto error; 212225bded7cSSeth Forshee 2123cd401204SKevin Cernekee reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); 212425bded7cSSeth Forshee if (reg_val == -1) 212525bded7cSSeth Forshee goto error; 2126cd401204SKevin Cernekee 2127cd401204SKevin Cernekee /* bit 7: trackstick is present */ 2128cd401204SKevin Cernekee ret = reg_val & 0x80 ? 0 : -ENODEV; 2129cd401204SKevin Cernekee 2130cd401204SKevin Cernekee error: 2131cd401204SKevin Cernekee alps_exit_command_mode(psmouse); 2132cd401204SKevin Cernekee return ret; 2133cd401204SKevin Cernekee } 2134cd401204SKevin Cernekee 2135cd401204SKevin Cernekee static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) 2136cd401204SKevin Cernekee { 2137cd401204SKevin Cernekee struct ps2dev *ps2dev = &psmouse->ps2dev; 2138cd401204SKevin Cernekee int ret = 0; 2139cd401204SKevin Cernekee unsigned char param[4]; 2140cd401204SKevin Cernekee 2141cd401204SKevin Cernekee if (alps_passthrough_mode_v3(psmouse, reg_base, true)) 2142cd401204SKevin Cernekee return -EIO; 214325bded7cSSeth Forshee 214425bded7cSSeth Forshee /* 214525bded7cSSeth Forshee * E7 report for the trackstick 214625bded7cSSeth Forshee * 214725bded7cSSeth Forshee * There have been reports of failures to seem to trace back 214825bded7cSSeth Forshee * to the above trackstick check failing. When these occur 214925bded7cSSeth Forshee * this E7 report fails, so when that happens we continue 215025bded7cSSeth Forshee * with the assumption that there isn't a trackstick after 215125bded7cSSeth Forshee * all. 215225bded7cSSeth Forshee */ 2153cd401204SKevin Cernekee if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { 2154a09221e8SDmitry Torokhov psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); 2155cd401204SKevin Cernekee ret = -ENODEV; 215625bded7cSSeth Forshee } else { 215739fbe585SDmitry Torokhov psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); 215825bded7cSSeth Forshee 215925bded7cSSeth Forshee /* 216025bded7cSSeth Forshee * Not sure what this does, but it is absolutely 216125bded7cSSeth Forshee * essential. Without it, the touchpad does not 216225bded7cSSeth Forshee * work at all and the trackstick just emits normal 216325bded7cSSeth Forshee * PS/2 packets. 216425bded7cSSeth Forshee */ 216525bded7cSSeth Forshee if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 216625bded7cSSeth Forshee ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 216725bded7cSSeth Forshee ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || 216825bded7cSSeth Forshee alps_command_mode_send_nibble(psmouse, 0x9) || 216925bded7cSSeth Forshee alps_command_mode_send_nibble(psmouse, 0x4)) { 217025bded7cSSeth Forshee psmouse_err(psmouse, 217125bded7cSSeth Forshee "Error sending magic E6 sequence\n"); 2172cd401204SKevin Cernekee ret = -EIO; 217325bded7cSSeth Forshee goto error; 217425bded7cSSeth Forshee } 217525bded7cSSeth Forshee 2176cd401204SKevin Cernekee /* 2177cd401204SKevin Cernekee * This ensures the trackstick packets are in the format 2178cd401204SKevin Cernekee * supported by this driver. If bit 1 isn't set the packet 2179cd401204SKevin Cernekee * format is different. 2180cd401204SKevin Cernekee */ 2181d18e53fcSKevin Cernekee if (alps_enter_command_mode(psmouse) || 2182cd401204SKevin Cernekee alps_command_mode_write_reg(psmouse, 2183cd401204SKevin Cernekee reg_base + 0x08, 0x82) || 2184cd401204SKevin Cernekee alps_exit_command_mode(psmouse)) 2185cd401204SKevin Cernekee ret = -EIO; 2186cd401204SKevin Cernekee } 2187cd401204SKevin Cernekee 2188cd401204SKevin Cernekee error: 2189cd401204SKevin Cernekee if (alps_passthrough_mode_v3(psmouse, reg_base, false)) 2190cd401204SKevin Cernekee ret = -EIO; 2191cd401204SKevin Cernekee 2192cd401204SKevin Cernekee return ret; 2193cd401204SKevin Cernekee } 2194cd401204SKevin Cernekee 2195cd401204SKevin Cernekee static int alps_hw_init_v3(struct psmouse *psmouse) 2196cd401204SKevin Cernekee { 21974b1af853SPali Rohár struct alps_data *priv = psmouse->private; 2198cd401204SKevin Cernekee struct ps2dev *ps2dev = &psmouse->ps2dev; 2199cd401204SKevin Cernekee int reg_val; 2200cd401204SKevin Cernekee unsigned char param[4]; 2201cd401204SKevin Cernekee 22024b1af853SPali Rohár if ((priv->flags & ALPS_DUALPOINT) && 2203cd401204SKevin Cernekee alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) 2204cd401204SKevin Cernekee goto error; 2205cd401204SKevin Cernekee 2206d18e53fcSKevin Cernekee if (alps_enter_command_mode(psmouse) || 2207cd401204SKevin Cernekee alps_absolute_mode_v3(psmouse)) { 220825bded7cSSeth Forshee psmouse_err(psmouse, "Failed to enter absolute mode\n"); 220925bded7cSSeth Forshee goto error; 221025bded7cSSeth Forshee } 221125bded7cSSeth Forshee 221225bded7cSSeth Forshee reg_val = alps_command_mode_read_reg(psmouse, 0x0006); 221325bded7cSSeth Forshee if (reg_val == -1) 221425bded7cSSeth Forshee goto error; 221525bded7cSSeth Forshee if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 221625bded7cSSeth Forshee goto error; 221725bded7cSSeth Forshee 221825bded7cSSeth Forshee reg_val = alps_command_mode_read_reg(psmouse, 0x0007); 221925bded7cSSeth Forshee if (reg_val == -1) 222025bded7cSSeth Forshee goto error; 222125bded7cSSeth Forshee if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) 222225bded7cSSeth Forshee goto error; 222325bded7cSSeth Forshee 222425bded7cSSeth Forshee if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) 222525bded7cSSeth Forshee goto error; 222625bded7cSSeth Forshee if (__alps_command_mode_write_reg(psmouse, 0x04)) 222725bded7cSSeth Forshee goto error; 222825bded7cSSeth Forshee 222925bded7cSSeth Forshee if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) 223025bded7cSSeth Forshee goto error; 223125bded7cSSeth Forshee if (__alps_command_mode_write_reg(psmouse, 0x03)) 223225bded7cSSeth Forshee goto error; 223325bded7cSSeth Forshee 223425bded7cSSeth Forshee if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) 223525bded7cSSeth Forshee goto error; 223625bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) 223725bded7cSSeth Forshee goto error; 223825bded7cSSeth Forshee 223925bded7cSSeth Forshee if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) 224025bded7cSSeth Forshee goto error; 224125bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) 224225bded7cSSeth Forshee goto error; 224325bded7cSSeth Forshee 224425bded7cSSeth Forshee alps_exit_command_mode(psmouse); 224525bded7cSSeth Forshee 224625bded7cSSeth Forshee /* Set rate and enable data reporting */ 224725bded7cSSeth Forshee param[0] = 0x64; 224825bded7cSSeth Forshee if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 224925bded7cSSeth Forshee ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 225025bded7cSSeth Forshee psmouse_err(psmouse, "Failed to enable data reporting\n"); 225125bded7cSSeth Forshee return -1; 225225bded7cSSeth Forshee } 225325bded7cSSeth Forshee 225425bded7cSSeth Forshee return 0; 225525bded7cSSeth Forshee 225625bded7cSSeth Forshee error: 225725bded7cSSeth Forshee /* 225825bded7cSSeth Forshee * Leaving the touchpad in command mode will essentially render 225925bded7cSSeth Forshee * it unusable until the machine reboots, so exit it here just 226025bded7cSSeth Forshee * to be safe 226125bded7cSSeth Forshee */ 226225bded7cSSeth Forshee alps_exit_command_mode(psmouse); 226325bded7cSSeth Forshee return -1; 226425bded7cSSeth Forshee } 226525bded7cSSeth Forshee 2266f3f33c67SHans de Goede static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) 2267f3f33c67SHans de Goede { 2268f3f33c67SHans de Goede int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; 2269f3f33c67SHans de Goede struct alps_data *priv = psmouse->private; 2270f3f33c67SHans de Goede 2271f3f33c67SHans de Goede reg = alps_command_mode_read_reg(psmouse, reg_pitch); 2272f3f33c67SHans de Goede if (reg < 0) 2273f3f33c67SHans de Goede return reg; 2274f3f33c67SHans de Goede 2275f3f33c67SHans de Goede x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2276f3f33c67SHans de Goede x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ 2277f3f33c67SHans de Goede 2278f3f33c67SHans de Goede y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ 2279f3f33c67SHans de Goede y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ 2280f3f33c67SHans de Goede 2281f3f33c67SHans de Goede reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); 2282f3f33c67SHans de Goede if (reg < 0) 2283f3f33c67SHans de Goede return reg; 2284f3f33c67SHans de Goede 2285f3f33c67SHans de Goede x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ 2286f3f33c67SHans de Goede x_electrode = 17 + x_electrode; 2287f3f33c67SHans de Goede 2288f3f33c67SHans de Goede y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ 2289f3f33c67SHans de Goede y_electrode = 13 + y_electrode; 2290f3f33c67SHans de Goede 2291f3f33c67SHans de Goede x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ 2292f3f33c67SHans de Goede y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ 2293f3f33c67SHans de Goede 2294f3f33c67SHans de Goede priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 2295f3f33c67SHans de Goede priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 2296f3f33c67SHans de Goede 2297f3f33c67SHans de Goede psmouse_dbg(psmouse, 2298f3f33c67SHans de Goede "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", 2299f3f33c67SHans de Goede x_pitch, y_pitch, x_electrode, y_electrode, 2300f3f33c67SHans de Goede x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); 2301f3f33c67SHans de Goede 2302f3f33c67SHans de Goede return 0; 2303f3f33c67SHans de Goede } 2304f3f33c67SHans de Goede 23051302bac3SKevin Cernekee static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) 23061302bac3SKevin Cernekee { 2307cd401204SKevin Cernekee struct alps_data *priv = psmouse->private; 23081302bac3SKevin Cernekee struct ps2dev *ps2dev = &psmouse->ps2dev; 23091302bac3SKevin Cernekee int reg_val, ret = -1; 23101302bac3SKevin Cernekee 2311cd401204SKevin Cernekee if (priv->flags & ALPS_DUALPOINT) { 2312cd401204SKevin Cernekee reg_val = alps_setup_trackstick_v3(psmouse, 2313cd401204SKevin Cernekee ALPS_REG_BASE_RUSHMORE); 2314cd401204SKevin Cernekee if (reg_val == -EIO) 2315cd401204SKevin Cernekee goto error; 2316cd401204SKevin Cernekee } 2317cd401204SKevin Cernekee 2318d18e53fcSKevin Cernekee if (alps_enter_command_mode(psmouse) || 23191302bac3SKevin Cernekee alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || 23201302bac3SKevin Cernekee alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) 23211302bac3SKevin Cernekee goto error; 23221302bac3SKevin Cernekee 2323f3f33c67SHans de Goede if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) 2324f3f33c67SHans de Goede goto error; 2325f3f33c67SHans de Goede 23261302bac3SKevin Cernekee reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); 23271302bac3SKevin Cernekee if (reg_val == -1) 23281302bac3SKevin Cernekee goto error; 23291302bac3SKevin Cernekee if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) 23301302bac3SKevin Cernekee goto error; 23311302bac3SKevin Cernekee 23321302bac3SKevin Cernekee if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 23331302bac3SKevin Cernekee goto error; 23341302bac3SKevin Cernekee 23351302bac3SKevin Cernekee /* enter absolute mode */ 23361302bac3SKevin Cernekee reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 23371302bac3SKevin Cernekee if (reg_val == -1) 23381302bac3SKevin Cernekee goto error; 23391302bac3SKevin Cernekee if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 23401302bac3SKevin Cernekee goto error; 23411302bac3SKevin Cernekee 23421302bac3SKevin Cernekee alps_exit_command_mode(psmouse); 23431302bac3SKevin Cernekee return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 23441302bac3SKevin Cernekee 23451302bac3SKevin Cernekee error: 23461302bac3SKevin Cernekee alps_exit_command_mode(psmouse); 23471302bac3SKevin Cernekee return ret; 23481302bac3SKevin Cernekee } 23491302bac3SKevin Cernekee 235025bded7cSSeth Forshee /* Must be in command mode when calling this function */ 235125bded7cSSeth Forshee static int alps_absolute_mode_v4(struct psmouse *psmouse) 235225bded7cSSeth Forshee { 235325bded7cSSeth Forshee int reg_val; 235425bded7cSSeth Forshee 235525bded7cSSeth Forshee reg_val = alps_command_mode_read_reg(psmouse, 0x0004); 235625bded7cSSeth Forshee if (reg_val == -1) 235725bded7cSSeth Forshee return -1; 235825bded7cSSeth Forshee 235925bded7cSSeth Forshee reg_val |= 0x02; 236025bded7cSSeth Forshee if (__alps_command_mode_write_reg(psmouse, reg_val)) 236125bded7cSSeth Forshee return -1; 236225bded7cSSeth Forshee 236325bded7cSSeth Forshee return 0; 236425bded7cSSeth Forshee } 236525bded7cSSeth Forshee 236625bded7cSSeth Forshee static int alps_hw_init_v4(struct psmouse *psmouse) 236725bded7cSSeth Forshee { 236825bded7cSSeth Forshee struct ps2dev *ps2dev = &psmouse->ps2dev; 236925bded7cSSeth Forshee unsigned char param[4]; 237025bded7cSSeth Forshee 2371d18e53fcSKevin Cernekee if (alps_enter_command_mode(psmouse)) 237225bded7cSSeth Forshee goto error; 237325bded7cSSeth Forshee 237425bded7cSSeth Forshee if (alps_absolute_mode_v4(psmouse)) { 237525bded7cSSeth Forshee psmouse_err(psmouse, "Failed to enter absolute mode\n"); 237625bded7cSSeth Forshee goto error; 237725bded7cSSeth Forshee } 237825bded7cSSeth Forshee 237925bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) 238025bded7cSSeth Forshee goto error; 238125bded7cSSeth Forshee 238225bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) 238325bded7cSSeth Forshee goto error; 238425bded7cSSeth Forshee 238525bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) 238625bded7cSSeth Forshee goto error; 238725bded7cSSeth Forshee 238825bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) 238925bded7cSSeth Forshee goto error; 239025bded7cSSeth Forshee 239125bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) 239225bded7cSSeth Forshee goto error; 239325bded7cSSeth Forshee 239425bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) 239525bded7cSSeth Forshee goto error; 239625bded7cSSeth Forshee 239725bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) 239825bded7cSSeth Forshee goto error; 239925bded7cSSeth Forshee 240025bded7cSSeth Forshee if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) 240125bded7cSSeth Forshee goto error; 240225bded7cSSeth Forshee 240325bded7cSSeth Forshee alps_exit_command_mode(psmouse); 240425bded7cSSeth Forshee 240525bded7cSSeth Forshee /* 240625bded7cSSeth Forshee * This sequence changes the output from a 9-byte to an 240725bded7cSSeth Forshee * 8-byte format. All the same data seems to be present, 240825bded7cSSeth Forshee * just in a more compact format. 240925bded7cSSeth Forshee */ 241025bded7cSSeth Forshee param[0] = 0xc8; 241125bded7cSSeth Forshee param[1] = 0x64; 241225bded7cSSeth Forshee param[2] = 0x50; 241325bded7cSSeth Forshee if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 241425bded7cSSeth Forshee ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || 241525bded7cSSeth Forshee ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || 241625bded7cSSeth Forshee ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) 241725bded7cSSeth Forshee return -1; 241825bded7cSSeth Forshee 241925bded7cSSeth Forshee /* Set rate and enable data reporting */ 242025bded7cSSeth Forshee param[0] = 0x64; 242125bded7cSSeth Forshee if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || 242225bded7cSSeth Forshee ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { 242325bded7cSSeth Forshee psmouse_err(psmouse, "Failed to enable data reporting\n"); 242425bded7cSSeth Forshee return -1; 242525bded7cSSeth Forshee } 242625bded7cSSeth Forshee 242725bded7cSSeth Forshee return 0; 242825bded7cSSeth Forshee 242925bded7cSSeth Forshee error: 243025bded7cSSeth Forshee /* 243125bded7cSSeth Forshee * Leaving the touchpad in command mode will essentially render 243225bded7cSSeth Forshee * it unusable until the machine reboots, so exit it here just 243325bded7cSSeth Forshee * to be safe 243425bded7cSSeth Forshee */ 243525bded7cSSeth Forshee alps_exit_command_mode(psmouse); 243625bded7cSSeth Forshee return -1; 243725bded7cSSeth Forshee } 243825bded7cSSeth Forshee 24393db5b9f7SMasaki Ota static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, 24403db5b9f7SMasaki Ota unsigned char index, unsigned char otp[]) 24413db5b9f7SMasaki Ota { 24423db5b9f7SMasaki Ota struct ps2dev *ps2dev = &psmouse->ps2dev; 24433db5b9f7SMasaki Ota 24443db5b9f7SMasaki Ota switch (index) { 24453db5b9f7SMasaki Ota case 0: 24463db5b9f7SMasaki Ota if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 24473db5b9f7SMasaki Ota ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 24483db5b9f7SMasaki Ota ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 24493db5b9f7SMasaki Ota return -1; 24503db5b9f7SMasaki Ota 24513db5b9f7SMasaki Ota break; 24523db5b9f7SMasaki Ota 24533db5b9f7SMasaki Ota case 1: 24543db5b9f7SMasaki Ota if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 24553db5b9f7SMasaki Ota ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 24563db5b9f7SMasaki Ota ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) 24573db5b9f7SMasaki Ota return -1; 24583db5b9f7SMasaki Ota 24593db5b9f7SMasaki Ota break; 24603db5b9f7SMasaki Ota } 24613db5b9f7SMasaki Ota 24623db5b9f7SMasaki Ota return 0; 24633db5b9f7SMasaki Ota } 24643db5b9f7SMasaki Ota 246507f19e3dSFengguang Wu static int alps_update_device_area_ss4_v2(unsigned char otp[][4], 24663db5b9f7SMasaki Ota struct alps_data *priv) 24673db5b9f7SMasaki Ota { 24683db5b9f7SMasaki Ota int num_x_electrode; 24693db5b9f7SMasaki Ota int num_y_electrode; 24703db5b9f7SMasaki Ota int x_pitch, y_pitch, x_phys, y_phys; 24713db5b9f7SMasaki Ota 24723db5b9f7SMasaki Ota num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); 24733db5b9f7SMasaki Ota num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); 24743db5b9f7SMasaki Ota 24753db5b9f7SMasaki Ota priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 24763db5b9f7SMasaki Ota priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; 24773db5b9f7SMasaki Ota 24783db5b9f7SMasaki Ota x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; 24793db5b9f7SMasaki Ota y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; 24803db5b9f7SMasaki Ota 24813db5b9f7SMasaki Ota x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ 24823db5b9f7SMasaki Ota y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ 24833db5b9f7SMasaki Ota 24843db5b9f7SMasaki Ota priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ 24853db5b9f7SMasaki Ota priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ 24863db5b9f7SMasaki Ota 24873db5b9f7SMasaki Ota return 0; 24883db5b9f7SMasaki Ota } 24893db5b9f7SMasaki Ota 249007f19e3dSFengguang Wu static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], 249107f19e3dSFengguang Wu struct alps_data *priv) 24923db5b9f7SMasaki Ota { 24933db5b9f7SMasaki Ota unsigned char is_btnless; 24943db5b9f7SMasaki Ota 24953db5b9f7SMasaki Ota is_btnless = (otp[1][1] >> 3) & 0x01; 24963db5b9f7SMasaki Ota 24973db5b9f7SMasaki Ota if (is_btnless) 24983db5b9f7SMasaki Ota priv->flags |= ALPS_BUTTONPAD; 24993db5b9f7SMasaki Ota 25003db5b9f7SMasaki Ota return 0; 25013db5b9f7SMasaki Ota } 25023db5b9f7SMasaki Ota 25033db5b9f7SMasaki Ota static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, 25043db5b9f7SMasaki Ota struct alps_data *priv) 25053db5b9f7SMasaki Ota { 25063db5b9f7SMasaki Ota unsigned char otp[2][4]; 25073db5b9f7SMasaki Ota 25083db5b9f7SMasaki Ota memset(otp, 0, sizeof(otp)); 25093db5b9f7SMasaki Ota 25103db5b9f7SMasaki Ota if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || 25113db5b9f7SMasaki Ota alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) 25123db5b9f7SMasaki Ota return -1; 25133db5b9f7SMasaki Ota 25143db5b9f7SMasaki Ota alps_update_device_area_ss4_v2(otp, priv); 25153db5b9f7SMasaki Ota 25163db5b9f7SMasaki Ota alps_update_btn_info_ss4_v2(otp, priv); 25173db5b9f7SMasaki Ota 25183db5b9f7SMasaki Ota return 0; 25193db5b9f7SMasaki Ota } 25203db5b9f7SMasaki Ota 2521ee65d4b3SYunkang Tang static int alps_dolphin_get_device_area(struct psmouse *psmouse, 2522ee65d4b3SYunkang Tang struct alps_data *priv) 2523ee65d4b3SYunkang Tang { 2524ee65d4b3SYunkang Tang struct ps2dev *ps2dev = &psmouse->ps2dev; 2525ee65d4b3SYunkang Tang unsigned char param[4] = {0}; 2526ee65d4b3SYunkang Tang int num_x_electrode, num_y_electrode; 2527ee65d4b3SYunkang Tang 2528ee65d4b3SYunkang Tang if (alps_enter_command_mode(psmouse)) 2529ee65d4b3SYunkang Tang return -1; 2530ee65d4b3SYunkang Tang 2531ee65d4b3SYunkang Tang param[0] = 0x0a; 2532ee65d4b3SYunkang Tang if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || 2533ee65d4b3SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2534ee65d4b3SYunkang Tang ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || 2535ee65d4b3SYunkang Tang ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 2536ee65d4b3SYunkang Tang ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) 2537ee65d4b3SYunkang Tang return -1; 2538ee65d4b3SYunkang Tang 2539ee65d4b3SYunkang Tang if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) 2540ee65d4b3SYunkang Tang return -1; 2541ee65d4b3SYunkang Tang 2542ee65d4b3SYunkang Tang /* 2543ee65d4b3SYunkang Tang * Dolphin's sensor line number is not fixed. It can be calculated 2544ee65d4b3SYunkang Tang * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. 2545ee65d4b3SYunkang Tang * Further more, we can get device's x_max and y_max by multiplying 2546ee65d4b3SYunkang Tang * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. 2547ee65d4b3SYunkang Tang * 2548ee65d4b3SYunkang Tang * e.g. When we get register's sensor_x = 11 & sensor_y = 8, 2549ee65d4b3SYunkang Tang * real sensor line number X = 11 + 8 = 19, and 2550ee65d4b3SYunkang Tang * real sensor line number Y = 8 + 1 = 9. 2551ee65d4b3SYunkang Tang * So, x_max = (19 - 1) * 64 = 1152, and 2552ee65d4b3SYunkang Tang * y_max = (9 - 1) * 64 = 512. 2553ee65d4b3SYunkang Tang */ 2554ee65d4b3SYunkang Tang num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); 2555ee65d4b3SYunkang Tang num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); 2556ee65d4b3SYunkang Tang priv->x_bits = num_x_electrode; 2557ee65d4b3SYunkang Tang priv->y_bits = num_y_electrode; 2558ee65d4b3SYunkang Tang priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2559ee65d4b3SYunkang Tang priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; 2560ee65d4b3SYunkang Tang 2561ee65d4b3SYunkang Tang if (alps_exit_command_mode(psmouse)) 2562ee65d4b3SYunkang Tang return -1; 2563ee65d4b3SYunkang Tang 2564ee65d4b3SYunkang Tang return 0; 2565ee65d4b3SYunkang Tang } 2566ee65d4b3SYunkang Tang 256775af9e56SDave Turvene static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) 256875af9e56SDave Turvene { 256975af9e56SDave Turvene struct ps2dev *ps2dev = &psmouse->ps2dev; 257075af9e56SDave Turvene unsigned char param[2]; 257175af9e56SDave Turvene 257275af9e56SDave Turvene /* This is dolphin "v1" as empirically defined by florin9doi */ 257375af9e56SDave Turvene param[0] = 0x64; 257475af9e56SDave Turvene param[1] = 0x28; 257575af9e56SDave Turvene 257675af9e56SDave Turvene if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 257775af9e56SDave Turvene ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 257875af9e56SDave Turvene ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) 257975af9e56SDave Turvene return -1; 258075af9e56SDave Turvene 258175af9e56SDave Turvene return 0; 258275af9e56SDave Turvene } 258375af9e56SDave Turvene 25843808843cSYunkang Tang static int alps_hw_init_v7(struct psmouse *psmouse) 25853808843cSYunkang Tang { 25863808843cSYunkang Tang struct ps2dev *ps2dev = &psmouse->ps2dev; 25873808843cSYunkang Tang int reg_val, ret = -1; 25883808843cSYunkang Tang 25893808843cSYunkang Tang if (alps_enter_command_mode(psmouse) || 25903808843cSYunkang Tang alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) 25913808843cSYunkang Tang goto error; 25923808843cSYunkang Tang 2593f3f33c67SHans de Goede if (alps_get_v3_v7_resolution(psmouse, 0xc397)) 2594f3f33c67SHans de Goede goto error; 2595f3f33c67SHans de Goede 25963808843cSYunkang Tang if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) 25973808843cSYunkang Tang goto error; 25983808843cSYunkang Tang 25993808843cSYunkang Tang reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); 26003808843cSYunkang Tang if (reg_val == -1) 26013808843cSYunkang Tang goto error; 26023808843cSYunkang Tang if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) 26033808843cSYunkang Tang goto error; 26043808843cSYunkang Tang 26053808843cSYunkang Tang alps_exit_command_mode(psmouse); 26063808843cSYunkang Tang return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 26073808843cSYunkang Tang 26083808843cSYunkang Tang error: 26093808843cSYunkang Tang alps_exit_command_mode(psmouse); 26103808843cSYunkang Tang return ret; 26113808843cSYunkang Tang } 26123808843cSYunkang Tang 26133db5b9f7SMasaki Ota static int alps_hw_init_ss4_v2(struct psmouse *psmouse) 26143db5b9f7SMasaki Ota { 26153db5b9f7SMasaki Ota struct ps2dev *ps2dev = &psmouse->ps2dev; 26163db5b9f7SMasaki Ota char param[2] = {0x64, 0x28}; 26173db5b9f7SMasaki Ota int ret = -1; 26183db5b9f7SMasaki Ota 26193db5b9f7SMasaki Ota /* enter absolute mode */ 26203db5b9f7SMasaki Ota if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 26213db5b9f7SMasaki Ota ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || 26223db5b9f7SMasaki Ota ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || 26233db5b9f7SMasaki Ota ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { 26243db5b9f7SMasaki Ota goto error; 26253db5b9f7SMasaki Ota } 26263db5b9f7SMasaki Ota 26273db5b9f7SMasaki Ota /* T.B.D. Decread noise packet number, delete in the future */ 26283db5b9f7SMasaki Ota if (alps_exit_command_mode(psmouse) || 26293db5b9f7SMasaki Ota alps_enter_command_mode(psmouse) || 26303db5b9f7SMasaki Ota alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { 26313db5b9f7SMasaki Ota goto error; 26323db5b9f7SMasaki Ota } 26333db5b9f7SMasaki Ota alps_exit_command_mode(psmouse); 26343db5b9f7SMasaki Ota 26353db5b9f7SMasaki Ota return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); 26363db5b9f7SMasaki Ota 26373db5b9f7SMasaki Ota error: 26383db5b9f7SMasaki Ota alps_exit_command_mode(psmouse); 26393db5b9f7SMasaki Ota return ret; 26403db5b9f7SMasaki Ota } 26413db5b9f7SMasaki Ota 26423296f71cSDmitry Torokhov static int alps_set_protocol(struct psmouse *psmouse, 26433296f71cSDmitry Torokhov struct alps_data *priv, 26443296f71cSDmitry Torokhov const struct alps_protocol_info *protocol) 264525bded7cSSeth Forshee { 26463296f71cSDmitry Torokhov psmouse->private = priv; 26473296f71cSDmitry Torokhov 26483296f71cSDmitry Torokhov setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); 26493296f71cSDmitry Torokhov 26503296f71cSDmitry Torokhov priv->proto_version = protocol->version; 26513296f71cSDmitry Torokhov priv->byte0 = protocol->byte0; 26523296f71cSDmitry Torokhov priv->mask0 = protocol->mask0; 26533296f71cSDmitry Torokhov priv->flags = protocol->flags; 2654f673ceb1SKevin Cernekee 26557a9f73e7SKevin Cernekee priv->x_max = 2000; 26567a9f73e7SKevin Cernekee priv->y_max = 1400; 26577a9f73e7SKevin Cernekee priv->x_bits = 15; 26587a9f73e7SKevin Cernekee priv->y_bits = 11; 26597a9f73e7SKevin Cernekee 266099df65e7SKevin Cernekee switch (priv->proto_version) { 266125bded7cSSeth Forshee case ALPS_PROTO_V1: 266225bded7cSSeth Forshee case ALPS_PROTO_V2: 266324af5cb9SKevin Cernekee priv->hw_init = alps_hw_init_v1_v2; 266424af5cb9SKevin Cernekee priv->process_packet = alps_process_packet_v1_v2; 266524af5cb9SKevin Cernekee priv->set_abs_params = alps_set_abs_params_st; 266695f75e91SYunkang Tang priv->x_max = 1023; 266795f75e91SYunkang Tang priv->y_max = 767; 266819556219SHans de Goede if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) 266919556219SHans de Goede priv->flags |= ALPS_STICK_BITS; 267025bded7cSSeth Forshee break; 2671fb2dd7a6SDmitry Torokhov 267225bded7cSSeth Forshee case ALPS_PROTO_V3: 267324af5cb9SKevin Cernekee priv->hw_init = alps_hw_init_v3; 267424af5cb9SKevin Cernekee priv->process_packet = alps_process_packet_v3; 2675688ea364SHans de Goede priv->set_abs_params = alps_set_abs_params_semi_mt; 2676f85e5001SKevin Cernekee priv->decode_fields = alps_decode_pinnacle; 267750e8b216SKevin Cernekee priv->nibble_commands = alps_v3_nibble_commands; 267850e8b216SKevin Cernekee priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 26794b1af853SPali Rohár 26804b1af853SPali Rohár if (alps_probe_trackstick_v3_v7(psmouse, 26814b1af853SPali Rohár ALPS_REG_BASE_PINNACLE) < 0) 26824b1af853SPali Rohár priv->flags &= ~ALPS_DUALPOINT; 26834b1af853SPali Rohár 268425bded7cSSeth Forshee break; 2685fb2dd7a6SDmitry Torokhov 2686fb2dd7a6SDmitry Torokhov case ALPS_PROTO_V3_RUSHMORE: 2687fb2dd7a6SDmitry Torokhov priv->hw_init = alps_hw_init_rushmore_v3; 2688fb2dd7a6SDmitry Torokhov priv->process_packet = alps_process_packet_v3; 2689688ea364SHans de Goede priv->set_abs_params = alps_set_abs_params_semi_mt; 2690fb2dd7a6SDmitry Torokhov priv->decode_fields = alps_decode_rushmore; 2691fb2dd7a6SDmitry Torokhov priv->nibble_commands = alps_v3_nibble_commands; 2692fb2dd7a6SDmitry Torokhov priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2693fb2dd7a6SDmitry Torokhov priv->x_bits = 16; 2694fb2dd7a6SDmitry Torokhov priv->y_bits = 12; 26953296f71cSDmitry Torokhov 2696dae928ecSPali Rohár if (alps_probe_trackstick_v3_v7(psmouse, 26973296f71cSDmitry Torokhov ALPS_REG_BASE_RUSHMORE) < 0) 26983296f71cSDmitry Torokhov priv->flags &= ~ALPS_DUALPOINT; 26993296f71cSDmitry Torokhov 2700fb2dd7a6SDmitry Torokhov break; 2701fb2dd7a6SDmitry Torokhov 270225bded7cSSeth Forshee case ALPS_PROTO_V4: 270324af5cb9SKevin Cernekee priv->hw_init = alps_hw_init_v4; 270424af5cb9SKevin Cernekee priv->process_packet = alps_process_packet_v4; 2705688ea364SHans de Goede priv->set_abs_params = alps_set_abs_params_semi_mt; 270650e8b216SKevin Cernekee priv->nibble_commands = alps_v4_nibble_commands; 270750e8b216SKevin Cernekee priv->addr_command = PSMOUSE_CMD_DISABLE; 270825bded7cSSeth Forshee break; 27093296f71cSDmitry Torokhov 271075af9e56SDave Turvene case ALPS_PROTO_V5: 271175af9e56SDave Turvene priv->hw_init = alps_hw_init_dolphin_v1; 2712ee65d4b3SYunkang Tang priv->process_packet = alps_process_touchpad_packet_v3_v5; 271375af9e56SDave Turvene priv->decode_fields = alps_decode_dolphin; 2714688ea364SHans de Goede priv->set_abs_params = alps_set_abs_params_semi_mt; 271575af9e56SDave Turvene priv->nibble_commands = alps_v3_nibble_commands; 271675af9e56SDave Turvene priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 271775af9e56SDave Turvene priv->x_bits = 23; 271875af9e56SDave Turvene priv->y_bits = 12; 2719c164c147SDmitry Torokhov 2720c164c147SDmitry Torokhov if (alps_dolphin_get_device_area(psmouse, priv)) 2721c164c147SDmitry Torokhov return -EIO; 2722c164c147SDmitry Torokhov 272375af9e56SDave Turvene break; 27243296f71cSDmitry Torokhov 272595f75e91SYunkang Tang case ALPS_PROTO_V6: 272695f75e91SYunkang Tang priv->hw_init = alps_hw_init_v6; 272795f75e91SYunkang Tang priv->process_packet = alps_process_packet_v6; 272895f75e91SYunkang Tang priv->set_abs_params = alps_set_abs_params_st; 272995f75e91SYunkang Tang priv->nibble_commands = alps_v6_nibble_commands; 273095f75e91SYunkang Tang priv->x_max = 2047; 273195f75e91SYunkang Tang priv->y_max = 1535; 273295f75e91SYunkang Tang break; 27333296f71cSDmitry Torokhov 27343808843cSYunkang Tang case ALPS_PROTO_V7: 27353808843cSYunkang Tang priv->hw_init = alps_hw_init_v7; 27363808843cSYunkang Tang priv->process_packet = alps_process_packet_v7; 27373808843cSYunkang Tang priv->decode_fields = alps_decode_packet_v7; 27388eccd393SMasaki Ota priv->set_abs_params = alps_set_abs_params_v7; 27393808843cSYunkang Tang priv->nibble_commands = alps_v3_nibble_commands; 27403808843cSYunkang Tang priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 2741c164c147SDmitry Torokhov priv->x_max = 0xfff; 2742c164c147SDmitry Torokhov priv->y_max = 0x7ff; 27433808843cSYunkang Tang 27443808843cSYunkang Tang if (priv->fw_ver[1] != 0xba) 27453808843cSYunkang Tang priv->flags |= ALPS_BUTTONPAD; 27463296f71cSDmitry Torokhov 2747dae928ecSPali Rohár if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) 2748dae928ecSPali Rohár priv->flags &= ~ALPS_DUALPOINT; 2749dae928ecSPali Rohár 27503808843cSYunkang Tang break; 27513db5b9f7SMasaki Ota 27523db5b9f7SMasaki Ota case ALPS_PROTO_V8: 27533db5b9f7SMasaki Ota priv->hw_init = alps_hw_init_ss4_v2; 27543db5b9f7SMasaki Ota priv->process_packet = alps_process_packet_ss4_v2; 27553db5b9f7SMasaki Ota priv->decode_fields = alps_decode_ss4_v2; 27563db5b9f7SMasaki Ota priv->set_abs_params = alps_set_abs_params_ss4_v2; 27573db5b9f7SMasaki Ota priv->nibble_commands = alps_v3_nibble_commands; 27583db5b9f7SMasaki Ota priv->addr_command = PSMOUSE_CMD_RESET_WRAP; 27593db5b9f7SMasaki Ota 27603db5b9f7SMasaki Ota if (alps_set_defaults_ss4_v2(psmouse, priv)) 27613db5b9f7SMasaki Ota return -EIO; 27623db5b9f7SMasaki Ota 2763aeaa881fSBen Gamari if (priv->fw_ver[1] == 0x1) 2764aeaa881fSBen Gamari priv->flags |= ALPS_DUALPOINT | 2765aeaa881fSBen Gamari ALPS_DUALPOINT_WITH_PRESSURE; 2766aeaa881fSBen Gamari 27673db5b9f7SMasaki Ota break; 276825bded7cSSeth Forshee } 27693296f71cSDmitry Torokhov 27703296f71cSDmitry Torokhov return 0; 277125bded7cSSeth Forshee } 277225bded7cSSeth Forshee 27733296f71cSDmitry Torokhov static const struct alps_protocol_info *alps_match_table(unsigned char *e7, 27743296f71cSDmitry Torokhov unsigned char *ec) 27752e992cc0SKevin Cernekee { 2776b5d6b851SKevin Cernekee const struct alps_model_info *model; 27772e992cc0SKevin Cernekee int i; 27782e992cc0SKevin Cernekee 2779b5d6b851SKevin Cernekee for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { 2780b5d6b851SKevin Cernekee model = &alps_model_data[i]; 2781b5d6b851SKevin Cernekee 2782b5d6b851SKevin Cernekee if (!memcmp(e7, model->signature, sizeof(model->signature)) && 2783b5d6b851SKevin Cernekee (!model->command_mode_resp || 2784b5d6b851SKevin Cernekee model->command_mode_resp == ec[2])) { 2785b5d6b851SKevin Cernekee 27863296f71cSDmitry Torokhov return &model->protocol_info; 2787b5d6b851SKevin Cernekee } 2788b5d6b851SKevin Cernekee } 2789b5d6b851SKevin Cernekee 27903296f71cSDmitry Torokhov return NULL; 2791b5d6b851SKevin Cernekee } 2792b5d6b851SKevin Cernekee 2793b5d6b851SKevin Cernekee static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) 2794b5d6b851SKevin Cernekee { 27953296f71cSDmitry Torokhov const struct alps_protocol_info *protocol; 2796b5d6b851SKevin Cernekee unsigned char e6[4], e7[4], ec[4]; 2797a09221e8SDmitry Torokhov int error; 2798b5d6b851SKevin Cernekee 27992e992cc0SKevin Cernekee /* 28002e992cc0SKevin Cernekee * First try "E6 report". 28012e992cc0SKevin Cernekee * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. 28022e992cc0SKevin Cernekee * The bits 0-2 of the first byte will be 1s if some buttons are 28032e992cc0SKevin Cernekee * pressed. 28042e992cc0SKevin Cernekee */ 2805b5d6b851SKevin Cernekee if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2806b5d6b851SKevin Cernekee PSMOUSE_CMD_SETSCALE11, e6)) 2807b5d6b851SKevin Cernekee return -EIO; 28082e992cc0SKevin Cernekee 2809b5d6b851SKevin Cernekee if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) 2810b5d6b851SKevin Cernekee return -EINVAL; 28112e992cc0SKevin Cernekee 28122e992cc0SKevin Cernekee /* 2813b5d6b851SKevin Cernekee * Now get the "E7" and "EC" reports. These will uniquely identify 2814b5d6b851SKevin Cernekee * most ALPS touchpads. 28152e992cc0SKevin Cernekee */ 2816b5d6b851SKevin Cernekee if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2817b5d6b851SKevin Cernekee PSMOUSE_CMD_SETSCALE21, e7) || 2818b5d6b851SKevin Cernekee alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, 2819b5d6b851SKevin Cernekee PSMOUSE_CMD_RESET_WRAP, ec) || 2820b5d6b851SKevin Cernekee alps_exit_command_mode(psmouse)) 2821b5d6b851SKevin Cernekee return -EIO; 28222e992cc0SKevin Cernekee 28233296f71cSDmitry Torokhov protocol = alps_match_table(e7, ec); 28243296f71cSDmitry Torokhov if (!protocol) { 28253296f71cSDmitry Torokhov if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && 28263296f71cSDmitry Torokhov ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { 28273296f71cSDmitry Torokhov protocol = &alps_v5_protocol_data; 28283296f71cSDmitry Torokhov } else if (ec[0] == 0x88 && 28293296f71cSDmitry Torokhov ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { 28303296f71cSDmitry Torokhov protocol = &alps_v7_protocol_data; 28313296f71cSDmitry Torokhov } else if (ec[0] == 0x88 && ec[1] == 0x08) { 28323296f71cSDmitry Torokhov protocol = &alps_v3_rushmore_data; 28333296f71cSDmitry Torokhov } else if (ec[0] == 0x88 && ec[1] == 0x07 && 28343296f71cSDmitry Torokhov ec[2] >= 0x90 && ec[2] <= 0x9d) { 28353296f71cSDmitry Torokhov protocol = &alps_v3_protocol_data; 28363db5b9f7SMasaki Ota } else if (e7[0] == 0x73 && e7[1] == 0x03 && 28373db5b9f7SMasaki Ota e7[2] == 0x14 && ec[1] == 0x02) { 28383db5b9f7SMasaki Ota protocol = &alps_v8_protocol_data; 2839aeaa881fSBen Gamari } else if (e7[0] == 0x73 && e7[1] == 0x03 && 2840aeaa881fSBen Gamari e7[2] == 0x28 && ec[1] == 0x01) { 2841aeaa881fSBen Gamari protocol = &alps_v8_protocol_data; 28423296f71cSDmitry Torokhov } else { 28433296f71cSDmitry Torokhov psmouse_dbg(psmouse, 28443296f71cSDmitry Torokhov "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); 28453296f71cSDmitry Torokhov return -EINVAL; 28463296f71cSDmitry Torokhov } 28473296f71cSDmitry Torokhov } 28483296f71cSDmitry Torokhov 2849a09221e8SDmitry Torokhov if (priv) { 2850c0cd17f6SHans de Goede /* Save the Firmware version */ 2851c0cd17f6SHans de Goede memcpy(priv->fw_ver, ec, 3); 2852a09221e8SDmitry Torokhov error = alps_set_protocol(psmouse, priv, protocol); 2853a09221e8SDmitry Torokhov if (error) 2854a09221e8SDmitry Torokhov return error; 2855a09221e8SDmitry Torokhov } 2856c0cd17f6SHans de Goede 2857a09221e8SDmitry Torokhov return 0; 28582e992cc0SKevin Cernekee } 28592e992cc0SKevin Cernekee 28601e0c5b12SDmitry Torokhov static int alps_reconnect(struct psmouse *psmouse) 28611e0c5b12SDmitry Torokhov { 2862b5d6b851SKevin Cernekee struct alps_data *priv = psmouse->private; 286371bb21b6SMaxim Levitsky 28641e0c5b12SDmitry Torokhov psmouse_reset(psmouse); 28651e0c5b12SDmitry Torokhov 2866b5d6b851SKevin Cernekee if (alps_identify(psmouse, priv) < 0) 28671e0c5b12SDmitry Torokhov return -1; 28681e0c5b12SDmitry Torokhov 286924af5cb9SKevin Cernekee return priv->hw_init(psmouse); 28701da177e4SLinus Torvalds } 28711da177e4SLinus Torvalds 28721da177e4SLinus Torvalds static void alps_disconnect(struct psmouse *psmouse) 28731da177e4SLinus Torvalds { 28741da177e4SLinus Torvalds struct alps_data *priv = psmouse->private; 28752e5b636bSDmitry Torokhov 28761da177e4SLinus Torvalds psmouse_reset(psmouse); 28771d9f2626SSebastian Kapfer del_timer_sync(&priv->timer); 287804aae283SPali Rohár if (priv->dev2) 28792e5b636bSDmitry Torokhov input_unregister_device(priv->dev2); 288004aae283SPali Rohár if (!IS_ERR_OR_NULL(priv->dev3)) 288104aae283SPali Rohár input_unregister_device(priv->dev3); 28821da177e4SLinus Torvalds kfree(priv); 28831da177e4SLinus Torvalds } 28841da177e4SLinus Torvalds 288524af5cb9SKevin Cernekee static void alps_set_abs_params_st(struct alps_data *priv, 288624af5cb9SKevin Cernekee struct input_dev *dev1) 288724af5cb9SKevin Cernekee { 288895f75e91SYunkang Tang input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); 288995f75e91SYunkang Tang input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); 28908eccd393SMasaki Ota input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 289124af5cb9SKevin Cernekee } 289224af5cb9SKevin Cernekee 28938eccd393SMasaki Ota static void alps_set_abs_params_mt_common(struct alps_data *priv, 289424af5cb9SKevin Cernekee struct input_dev *dev1) 289524af5cb9SKevin Cernekee { 28967a9f73e7SKevin Cernekee input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); 28977a9f73e7SKevin Cernekee input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); 289824af5cb9SKevin Cernekee 2899f3f33c67SHans de Goede input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); 2900f3f33c67SHans de Goede input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); 2901f3f33c67SHans de Goede 290224af5cb9SKevin Cernekee set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); 290324af5cb9SKevin Cernekee set_bit(BTN_TOOL_QUADTAP, dev1->keybit); 29048eccd393SMasaki Ota } 29053808843cSYunkang Tang 2906688ea364SHans de Goede static void alps_set_abs_params_semi_mt(struct alps_data *priv, 29078eccd393SMasaki Ota struct input_dev *dev1) 29088eccd393SMasaki Ota { 29098eccd393SMasaki Ota alps_set_abs_params_mt_common(priv, dev1); 29108eccd393SMasaki Ota input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 29118eccd393SMasaki Ota 29128eccd393SMasaki Ota input_mt_init_slots(dev1, MAX_TOUCHES, 29138eccd393SMasaki Ota INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 29141662c033SHans de Goede INPUT_MT_SEMI_MT); 29158eccd393SMasaki Ota } 29168eccd393SMasaki Ota 29178eccd393SMasaki Ota static void alps_set_abs_params_v7(struct alps_data *priv, 29188eccd393SMasaki Ota struct input_dev *dev1) 29198eccd393SMasaki Ota { 29208eccd393SMasaki Ota alps_set_abs_params_mt_common(priv, dev1); 29218d289842SMasaki Ota set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 29228eccd393SMasaki Ota 29238eccd393SMasaki Ota input_mt_init_slots(dev1, MAX_TOUCHES, 29248eccd393SMasaki Ota INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 29258eccd393SMasaki Ota INPUT_MT_TRACK); 29263db5b9f7SMasaki Ota 29273db5b9f7SMasaki Ota set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 29283db5b9f7SMasaki Ota } 29293db5b9f7SMasaki Ota 29303db5b9f7SMasaki Ota static void alps_set_abs_params_ss4_v2(struct alps_data *priv, 29313db5b9f7SMasaki Ota struct input_dev *dev1) 29323db5b9f7SMasaki Ota { 29333db5b9f7SMasaki Ota alps_set_abs_params_mt_common(priv, dev1); 29343db5b9f7SMasaki Ota input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); 29353db5b9f7SMasaki Ota set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); 29363db5b9f7SMasaki Ota 29373db5b9f7SMasaki Ota input_mt_init_slots(dev1, MAX_TOUCHES, 29383db5b9f7SMasaki Ota INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | 29393db5b9f7SMasaki Ota INPUT_MT_TRACK); 294024af5cb9SKevin Cernekee } 294124af5cb9SKevin Cernekee 29421da177e4SLinus Torvalds int alps_init(struct psmouse *psmouse) 29431da177e4SLinus Torvalds { 2944a09221e8SDmitry Torokhov struct alps_data *priv = psmouse->private; 294504aae283SPali Rohár struct input_dev *dev1 = psmouse->dev; 2946a09221e8SDmitry Torokhov int error; 29471da177e4SLinus Torvalds 2948a09221e8SDmitry Torokhov error = priv->hw_init(psmouse); 2949a09221e8SDmitry Torokhov if (error) 29501da177e4SLinus Torvalds goto init_fail; 29511da177e4SLinus Torvalds 29527105d2eaSDmitry Torokhov /* 29537105d2eaSDmitry Torokhov * Undo part of setup done for us by psmouse core since touchpad 29547105d2eaSDmitry Torokhov * is not a relative device. 29557105d2eaSDmitry Torokhov */ 29567105d2eaSDmitry Torokhov __clear_bit(EV_REL, dev1->evbit); 29577105d2eaSDmitry Torokhov __clear_bit(REL_X, dev1->relbit); 29587105d2eaSDmitry Torokhov __clear_bit(REL_Y, dev1->relbit); 29597105d2eaSDmitry Torokhov 29607105d2eaSDmitry Torokhov /* 29617105d2eaSDmitry Torokhov * Now set up our capabilities. 29627105d2eaSDmitry Torokhov */ 29637b19ada2SJiri Slaby dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); 29647b19ada2SJiri Slaby dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); 29657b19ada2SJiri Slaby dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); 296671bb21b6SMaxim Levitsky dev1->keybit[BIT_WORD(BTN_LEFT)] |= 296771bb21b6SMaxim Levitsky BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 29681da177e4SLinus Torvalds 29697b19ada2SJiri Slaby dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); 297025bded7cSSeth Forshee 297124af5cb9SKevin Cernekee priv->set_abs_params(priv, dev1); 29721da177e4SLinus Torvalds 297399df65e7SKevin Cernekee if (priv->flags & ALPS_WHEEL) { 29747b19ada2SJiri Slaby dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); 29757b19ada2SJiri Slaby dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); 29761da177e4SLinus Torvalds } 29771da177e4SLinus Torvalds 297899df65e7SKevin Cernekee if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { 29797b19ada2SJiri Slaby dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); 29807b19ada2SJiri Slaby dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); 29811da177e4SLinus Torvalds } 29821da177e4SLinus Torvalds 298399df65e7SKevin Cernekee if (priv->flags & ALPS_FOUR_BUTTONS) { 298471bb21b6SMaxim Levitsky dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); 298571bb21b6SMaxim Levitsky dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); 298671bb21b6SMaxim Levitsky dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); 298771bb21b6SMaxim Levitsky dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); 29883808843cSYunkang Tang } else if (priv->flags & ALPS_BUTTONPAD) { 29893808843cSYunkang Tang set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); 29903808843cSYunkang Tang clear_bit(BTN_RIGHT, dev1->keybit); 299171bb21b6SMaxim Levitsky } else { 299271bb21b6SMaxim Levitsky dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); 299371bb21b6SMaxim Levitsky } 299471bb21b6SMaxim Levitsky 2995dfba8600SPali Rohár if (priv->flags & ALPS_DUALPOINT) { 299604aae283SPali Rohár struct input_dev *dev2; 299704aae283SPali Rohár 299804aae283SPali Rohár dev2 = input_allocate_device(); 299904aae283SPali Rohár if (!dev2) { 300004aae283SPali Rohár psmouse_err(psmouse, 300104aae283SPali Rohár "failed to allocate trackstick device\n"); 300204aae283SPali Rohár error = -ENOMEM; 300304aae283SPali Rohár goto init_fail; 300404aae283SPali Rohár } 300504aae283SPali Rohár 300604aae283SPali Rohár snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", 300704aae283SPali Rohár psmouse->ps2dev.serio->phys); 300804aae283SPali Rohár dev2->phys = priv->phys2; 300904aae283SPali Rohár 3010dfba8600SPali Rohár /* 3011dfba8600SPali Rohár * format of input device name is: "protocol vendor name" 3012dfba8600SPali Rohár * see function psmouse_switch_protocol() in psmouse-base.c 3013dfba8600SPali Rohár */ 3014dfba8600SPali Rohár dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; 3015dfba8600SPali Rohár 30162e5b636bSDmitry Torokhov dev2->id.bustype = BUS_I8042; 30172e5b636bSDmitry Torokhov dev2->id.vendor = 0x0002; 301804aae283SPali Rohár dev2->id.product = PSMOUSE_ALPS; 301904aae283SPali Rohár dev2->id.version = priv->proto_version; 30201db3a345SDmitry Torokhov dev2->dev.parent = &psmouse->ps2dev.serio->dev; 30211da177e4SLinus Torvalds 302204aae283SPali Rohár input_set_capability(dev2, EV_REL, REL_X); 302304aae283SPali Rohár input_set_capability(dev2, EV_REL, REL_Y); 30247ad8a106SBen Gamari if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { 30257ad8a106SBen Gamari input_set_capability(dev2, EV_ABS, ABS_PRESSURE); 30267ad8a106SBen Gamari input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); 30277ad8a106SBen Gamari } 302804aae283SPali Rohár input_set_capability(dev2, EV_KEY, BTN_LEFT); 302904aae283SPali Rohár input_set_capability(dev2, EV_KEY, BTN_RIGHT); 303004aae283SPali Rohár input_set_capability(dev2, EV_KEY, BTN_MIDDLE); 30311da177e4SLinus Torvalds 303201d4cd5cSHans de Goede __set_bit(INPUT_PROP_POINTER, dev2->propbit); 30337611392fSHans de Goede __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); 30347611392fSHans de Goede 303504aae283SPali Rohár error = input_register_device(dev2); 303604aae283SPali Rohár if (error) { 303704aae283SPali Rohár psmouse_err(psmouse, 303804aae283SPali Rohár "failed to register trackstick device: %d\n", 303904aae283SPali Rohár error); 304004aae283SPali Rohár input_free_device(dev2); 3041f42649e8SDmitry Torokhov goto init_fail; 304204aae283SPali Rohár } 304304aae283SPali Rohár 304404aae283SPali Rohár priv->dev2 = dev2; 304504aae283SPali Rohár } 304604aae283SPali Rohár 304704aae283SPali Rohár priv->psmouse = psmouse; 304804aae283SPali Rohár 304904aae283SPali Rohár INIT_DELAYED_WORK(&priv->dev3_register_work, 305004aae283SPali Rohár alps_register_bare_ps2_mouse); 30511da177e4SLinus Torvalds 30521da177e4SLinus Torvalds psmouse->protocol_handler = alps_process_byte; 3053f0d5c6f4SDmitry Torokhov psmouse->poll = alps_poll; 30541da177e4SLinus Torvalds psmouse->disconnect = alps_disconnect; 30551da177e4SLinus Torvalds psmouse->reconnect = alps_reconnect; 305699df65e7SKevin Cernekee psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; 30571da177e4SLinus Torvalds 3058f0d5c6f4SDmitry Torokhov /* We are having trouble resyncing ALPS touchpads so disable it for now */ 3059f0d5c6f4SDmitry Torokhov psmouse->resync_time = 0; 3060f0d5c6f4SDmitry Torokhov 30619d720b34SPali Rohár /* Allow 2 invalid packets without resetting device */ 30629d720b34SPali Rohár psmouse->resetafter = psmouse->pktsize * 2; 30639d720b34SPali Rohár 30641da177e4SLinus Torvalds return 0; 30651da177e4SLinus Torvalds 30661da177e4SLinus Torvalds init_fail: 3067f42649e8SDmitry Torokhov psmouse_reset(psmouse); 3068a09221e8SDmitry Torokhov /* 3069a09221e8SDmitry Torokhov * Even though we did not allocate psmouse->private we do free 3070a09221e8SDmitry Torokhov * it here. 3071a09221e8SDmitry Torokhov */ 3072a09221e8SDmitry Torokhov kfree(psmouse->private); 30731e0c5b12SDmitry Torokhov psmouse->private = NULL; 3074a09221e8SDmitry Torokhov return error; 30751da177e4SLinus Torvalds } 30761da177e4SLinus Torvalds 3077b7802c5cSDmitry Torokhov int alps_detect(struct psmouse *psmouse, bool set_properties) 30781da177e4SLinus Torvalds { 3079a09221e8SDmitry Torokhov struct alps_data *priv; 3080a09221e8SDmitry Torokhov int error; 30811da177e4SLinus Torvalds 3082a09221e8SDmitry Torokhov error = alps_identify(psmouse, NULL); 3083a09221e8SDmitry Torokhov if (error) 3084a09221e8SDmitry Torokhov return error; 3085a09221e8SDmitry Torokhov 3086a09221e8SDmitry Torokhov /* 3087a09221e8SDmitry Torokhov * Reset the device to make sure it is fully operational: 3088a09221e8SDmitry Torokhov * on some laptops, like certain Dell Latitudes, we may 3089a09221e8SDmitry Torokhov * fail to properly detect presence of trackstick if device 3090a09221e8SDmitry Torokhov * has not been reset. 3091a09221e8SDmitry Torokhov */ 3092a09221e8SDmitry Torokhov psmouse_reset(psmouse); 3093a09221e8SDmitry Torokhov 3094a09221e8SDmitry Torokhov priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); 3095a09221e8SDmitry Torokhov if (!priv) 3096a09221e8SDmitry Torokhov return -ENOMEM; 3097a09221e8SDmitry Torokhov 3098a09221e8SDmitry Torokhov error = alps_identify(psmouse, priv); 309993050db2SDmitry Torokhov if (error) { 310093050db2SDmitry Torokhov kfree(priv); 3101a09221e8SDmitry Torokhov return error; 310293050db2SDmitry Torokhov } 31031da177e4SLinus Torvalds 31041da177e4SLinus Torvalds if (set_properties) { 31051da177e4SLinus Torvalds psmouse->vendor = "ALPS"; 3106a09221e8SDmitry Torokhov psmouse->name = priv->flags & ALPS_DUALPOINT ? 3107968ac842SDmitry Torokhov "DualPoint TouchPad" : "GlidePoint"; 3108a09221e8SDmitry Torokhov psmouse->model = priv->proto_version; 3109a09221e8SDmitry Torokhov } else { 3110a09221e8SDmitry Torokhov /* 3111a09221e8SDmitry Torokhov * Destroy alps_data structure we allocated earlier since 3112a09221e8SDmitry Torokhov * this was just a "trial run". Otherwise we'll keep it 3113a09221e8SDmitry Torokhov * to be used by alps_init() which has to be called if 3114a09221e8SDmitry Torokhov * we succeed and set_properties is true. 3115a09221e8SDmitry Torokhov */ 3116a09221e8SDmitry Torokhov kfree(priv); 3117a09221e8SDmitry Torokhov psmouse->private = NULL; 31181da177e4SLinus Torvalds } 3119a09221e8SDmitry Torokhov 31201da177e4SLinus Torvalds return 0; 31211da177e4SLinus Torvalds } 31221da177e4SLinus Torvalds 3123