diff options
Diffstat (limited to 'drivers/input/mouse/alps.c')
| -rw-r--r-- | drivers/input/mouse/alps.c | 2992 |
1 files changed, 2992 insertions, 0 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c new file mode 100644 index 000000000..a353b7de6 --- /dev/null +++ b/drivers/input/mouse/alps.c @@ -0,0 +1,2992 @@ +/* + * ALPS touchpad PS/2 mouse driver + * + * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> + * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> + * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> + * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> + * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> + * + * ALPS detection, tap switching and status querying info is taken from + * tpconfig utility (by C. Scott Ananian and Bruce Kall). + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/serio.h> +#include <linux/libps2.h> + +#include "psmouse.h" +#include "alps.h" + +/* + * Definitions for ALPS version 3 and 4 command mode protocol + */ +#define ALPS_CMD_NIBBLE_10 0x01f2 + +#define ALPS_REG_BASE_RUSHMORE 0xc2c0 +#define ALPS_REG_BASE_PINNACLE 0x0000 + +static const struct alps_nibble_commands alps_v3_nibble_commands[] = { + { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ + { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ + { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ + { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ + { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ + { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ + { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ + { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ + { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ + { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ + { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ + { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ + { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ + { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ + { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ + { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ +}; + +static const struct alps_nibble_commands alps_v4_nibble_commands[] = { + { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ + { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ + { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ + { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ + { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ + { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ + { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ + { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ + { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ + { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ + { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ + { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ + { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ + { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ + { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ + { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ +}; + +static const struct alps_nibble_commands alps_v6_nibble_commands[] = { + { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ + { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */ + { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */ + { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */ + { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */ + { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */ + { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */ + { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */ + { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */ + { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */ + { PSMOUSE_CMD_SETRES, 0x00 }, /* a */ + { PSMOUSE_CMD_SETRES, 0x01 }, /* b */ + { PSMOUSE_CMD_SETRES, 0x02 }, /* c */ + { PSMOUSE_CMD_SETRES, 0x03 }, /* d */ + { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */ + { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ +}; + + +#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ +#define ALPS_PASS 0x04 /* device has a pass-through port */ + +#define ALPS_WHEEL 0x08 /* hardware wheel present */ +#define ALPS_FW_BK_1 0x10 /* front & back buttons present */ +#define ALPS_FW_BK_2 0x20 /* front & back buttons present */ +#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ +#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with + 6-byte ALPS packet */ +#define ALPS_BUTTONPAD 0x200 /* device is a clickpad */ + +static const struct alps_model_info alps_model_data[] = { + { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ + { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ + { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, + { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, + { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ + { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, + { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, + { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ + { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ + { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ + { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, + { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ + { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ + { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, + { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ + + /* + * XXX This entry is suspicious. First byte has zero lower nibble, + * which is what a normal mouse would report. Also, the value 0x0e + * isn't valid per PS/2 spec. + */ + { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, + + { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, + { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ + /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ + { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, + ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, + { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ + { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ + { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, + ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ + { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } }, +}; + +static const struct alps_protocol_info alps_v3_protocol_data = { + ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT +}; + +static const struct alps_protocol_info alps_v3_rushmore_data = { + ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT +}; + +static const struct alps_protocol_info alps_v5_protocol_data = { + ALPS_PROTO_V5, 0xc8, 0xd8, 0 +}; + +static const struct alps_protocol_info alps_v7_protocol_data = { + ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT +}; + +static const struct alps_protocol_info alps_v8_protocol_data = { + ALPS_PROTO_V8, 0x18, 0x18, 0 +}; + +static void alps_set_abs_params_st(struct alps_data *priv, + struct input_dev *dev1); +static void alps_set_abs_params_mt(struct alps_data *priv, + struct input_dev *dev1); +static void alps_set_abs_params_v7(struct alps_data *priv, + struct input_dev *dev1); +static void alps_set_abs_params_ss4_v2(struct alps_data *priv, + struct input_dev *dev1); + +/* Packet formats are described in Documentation/input/alps.txt */ + +static bool alps_is_valid_first_byte(struct alps_data *priv, + unsigned char data) +{ + return (data & priv->mask0) == priv->byte0; +} + +static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, + int left, int right, int middle) +{ + struct input_dev *dev; + + /* + * If shared button has already been reported on the + * other device (dev2) then this event should be also + * sent through that device. + */ + dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; + input_report_key(dev, BTN_LEFT, left); + + dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; + input_report_key(dev, BTN_RIGHT, right); + + dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; + input_report_key(dev, BTN_MIDDLE, middle); + + /* + * Sync the _other_ device now, we'll do the first + * device later once we report the rest of the events. + */ + if (dev2) + input_sync(dev2); +} + +static void alps_process_packet_v1_v2(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev = psmouse->dev; + struct input_dev *dev2 = priv->dev2; + int x, y, z, ges, fin, left, right, middle; + int back = 0, forward = 0; + + if (priv->proto_version == ALPS_PROTO_V1) { + left = packet[2] & 0x10; + right = packet[2] & 0x08; + middle = 0; + x = packet[1] | ((packet[0] & 0x07) << 7); + y = packet[4] | ((packet[3] & 0x07) << 7); + z = packet[5]; + } else { + left = packet[3] & 1; + right = packet[3] & 2; + middle = packet[3] & 4; + x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); + y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); + z = packet[5]; + } + + if (priv->flags & ALPS_FW_BK_1) { + back = packet[0] & 0x10; + forward = packet[2] & 4; + } + + if (priv->flags & ALPS_FW_BK_2) { + back = packet[3] & 4; + forward = packet[2] & 4; + if ((middle = forward && back)) + forward = back = 0; + } + + ges = packet[2] & 1; + fin = packet[2] & 2; + + if ((priv->flags & ALPS_DUALPOINT) && z == 127) { + input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); + input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); + + alps_report_buttons(dev2, dev, left, right, middle); + + input_sync(dev2); + return; + } + + /* Non interleaved V2 dualpoint has separate stick button bits */ + if (priv->proto_version == ALPS_PROTO_V2 && + priv->flags == (ALPS_PASS | ALPS_DUALPOINT)) { + left |= packet[0] & 1; + right |= packet[0] & 2; + middle |= packet[0] & 4; + } + + alps_report_buttons(dev, dev2, left, right, middle); + + /* Convert hardware tap to a reasonable Z value */ + if (ges && !fin) + z = 40; + + /* + * A "tap and drag" operation is reported by the hardware as a transition + * from (!fin && ges) to (fin && ges). This should be translated to the + * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. + */ + if (ges && fin && !priv->prev_fin) { + input_report_abs(dev, ABS_X, x); + input_report_abs(dev, ABS_Y, y); + input_report_abs(dev, ABS_PRESSURE, 0); + input_report_key(dev, BTN_TOOL_FINGER, 0); + input_sync(dev); + } + priv->prev_fin = fin; + + if (z > 30) + input_report_key(dev, BTN_TOUCH, 1); + if (z < 25) + input_report_key(dev, BTN_TOUCH, 0); + + if (z > 0) { + input_report_abs(dev, ABS_X, x); + input_report_abs(dev, ABS_Y, y); + } + + input_report_abs(dev, ABS_PRESSURE, z); + input_report_key(dev, BTN_TOOL_FINGER, z > 0); + + if (priv->flags & ALPS_WHEEL) + input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); + + if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { + input_report_key(dev, BTN_FORWARD, forward); + input_report_key(dev, BTN_BACK, back); + } + + if (priv->flags & ALPS_FOUR_BUTTONS) { + input_report_key(dev, BTN_0, packet[2] & 4); + input_report_key(dev, BTN_1, packet[0] & 0x10); + input_report_key(dev, BTN_2, packet[3] & 4); + input_report_key(dev, BTN_3, packet[0] & 0x20); + } + + input_sync(dev); +} + +/* + * Process bitmap data for V5 protocols. Return value is null. + * + * The bitmaps don't have enough data to track fingers, so this function + * only generates points representing a bounding box of at most two contacts. + * These two points are returned in fields->mt. + */ +static void alps_process_bitmap_dolphin(struct alps_data *priv, + struct alps_fields *fields) +{ + int box_middle_x, box_middle_y; + unsigned int x_map, y_map; + unsigned char start_bit, end_bit; + unsigned char x_msb, x_lsb, y_msb, y_lsb; + + x_map = fields->x_map; + y_map = fields->y_map; + + if (!x_map || !y_map) + return; + + /* Get Most-significant and Least-significant bit */ + x_msb = fls(x_map); + x_lsb = ffs(x_map); + y_msb = fls(y_map); + y_lsb = ffs(y_map); + + /* Most-significant bit should never exceed max sensor line number */ + if (x_msb > priv->x_bits || y_msb > priv->y_bits) + return; + + if (fields->fingers > 1) { + start_bit = priv->x_bits - x_msb; + end_bit = priv->x_bits - x_lsb; + box_middle_x = (priv->x_max * (start_bit + end_bit)) / + (2 * (priv->x_bits - 1)); + + start_bit = y_lsb - 1; + end_bit = y_msb - 1; + box_middle_y = (priv->y_max * (start_bit + end_bit)) / + (2 * (priv->y_bits - 1)); + fields->mt[0] = fields->st; + fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x; + fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y; + } +} + +static void alps_get_bitmap_points(unsigned int map, + struct alps_bitmap_point *low, + struct alps_bitmap_point *high, + int *fingers) +{ + struct alps_bitmap_point *point; + int i, bit, prev_bit = 0; + + point = low; + for (i = 0; map != 0; i++, map >>= 1) { + bit = map & 1; + if (bit) { + if (!prev_bit) { + point->start_bit = i; + point->num_bits = 0; + (*fingers)++; + } + point->num_bits++; + } else { + if (prev_bit) + point = high; + } + prev_bit = bit; + } +} + +/* + * Process bitmap data from v3 and v4 protocols. Returns the number of + * fingers detected. A return value of 0 means at least one of the + * bitmaps was empty. + * + * The bitmaps don't have enough data to track fingers, so this function + * only generates points representing a bounding box of all contacts. + * These points are returned in fields->mt when the return value + * is greater than 0. + */ +static int alps_process_bitmap(struct alps_data *priv, + struct alps_fields *fields) +{ + int i, fingers_x = 0, fingers_y = 0, fingers; + struct alps_bitmap_point x_low = {0,}, x_high = {0,}; + struct alps_bitmap_point y_low = {0,}, y_high = {0,}; + + if (!fields->x_map || !fields->y_map) + return 0; + + alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); + alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); + + /* + * Fingers can overlap, so we use the maximum count of fingers + * on either axis as the finger count. + */ + fingers = max(fingers_x, fingers_y); + + /* + * If an axis reports only a single contact, we have overlapping or + * adjacent fingers. Divide the single contact between the two points. + */ + if (fingers_x == 1) { + i = (x_low.num_bits - 1) / 2; + x_low.num_bits = x_low.num_bits - i; + x_high.start_bit = x_low.start_bit + i; + x_high.num_bits = max(i, 1); + } + if (fingers_y == 1) { + i = (y_low.num_bits - 1) / 2; + y_low.num_bits = y_low.num_bits - i; + y_high.start_bit = y_low.start_bit + i; + y_high.num_bits = max(i, 1); + } + + fields->mt[0].x = + (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / + (2 * (priv->x_bits - 1)); + fields->mt[0].y = + (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / + (2 * (priv->y_bits - 1)); + + fields->mt[1].x = + (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / + (2 * (priv->x_bits - 1)); + fields->mt[1].y = + (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / + (2 * (priv->y_bits - 1)); + + /* y-bitmap order is reversed, except on rushmore */ + if (priv->proto_version != ALPS_PROTO_V3_RUSHMORE) { + fields->mt[0].y = priv->y_max - fields->mt[0].y; + fields->mt[1].y = priv->y_max - fields->mt[1].y; + } + + return fingers; +} + +static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) +{ + input_mt_slot(dev, slot); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); + input_report_abs(dev, ABS_MT_POSITION_X, x); + input_report_abs(dev, ABS_MT_POSITION_Y, y); +} + +static void alps_report_mt_data(struct psmouse *psmouse, int n) +{ + struct alps_data *priv = psmouse->private; + struct input_dev *dev = psmouse->dev; + struct alps_fields *f = &priv->f; + int i, slot[MAX_TOUCHES]; + + input_mt_assign_slots(dev, slot, f->mt, n, 0); + for (i = 0; i < n; i++) + alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); + + input_mt_sync_frame(dev); +} + +static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) +{ + struct alps_data *priv = psmouse->private; + struct input_dev *dev = psmouse->dev; + struct alps_fields *f = &priv->f; + + /* Use st data when we don't have mt data */ + if (fingers < 2) { + f->mt[0].x = f->st.x; + f->mt[0].y = f->st.y; + fingers = f->pressure > 0 ? 1 : 0; + } + + alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2); + + input_mt_report_finger_count(dev, fingers); + + input_report_key(dev, BTN_LEFT, f->left); + input_report_key(dev, BTN_RIGHT, f->right); + input_report_key(dev, BTN_MIDDLE, f->middle); + + input_report_abs(dev, ABS_PRESSURE, f->pressure); + + input_sync(dev); +} + +static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev = priv->dev2; + int x, y, z, left, right, middle; + + /* It should be a DualPoint when received trackstick packet */ + if (!(priv->flags & ALPS_DUALPOINT)) { + psmouse_warn(psmouse, + "Rejected trackstick packet from non DualPoint device"); + return; + } + + /* Sanity check packet */ + if (!(packet[0] & 0x40)) { + psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); + return; + } + + /* + * There's a special packet that seems to indicate the end + * of a stream of trackstick data. Filter these out. + */ + if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) + return; + + x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); + y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); + z = (packet[4] & 0x7c) >> 2; + + /* + * The x and y values tend to be quite large, and when used + * alone the trackstick is difficult to use. Scale them down + * to compensate. + */ + x /= 8; + y /= 8; + + input_report_rel(dev, REL_X, x); + input_report_rel(dev, REL_Y, -y); + + /* + * Most ALPS models report the trackstick buttons in the touchpad + * packets, but a few report them here. No reliable way has been + * found to differentiate between the models upfront, so we enable + * the quirk in response to seeing a button press in the trackstick + * packet. + */ + left = packet[3] & 0x01; + right = packet[3] & 0x02; + middle = packet[3] & 0x04; + + if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && + (left || right || middle)) + priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; + + if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { + input_report_key(dev, BTN_LEFT, left); + input_report_key(dev, BTN_RIGHT, right); + input_report_key(dev, BTN_MIDDLE, middle); + } + + input_sync(dev); + return; +} + +static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) +{ + f->left = !!(p[3] & 0x01); + f->right = !!(p[3] & 0x02); + f->middle = !!(p[3] & 0x04); + + f->ts_left = !!(p[3] & 0x10); + f->ts_right = !!(p[3] & 0x20); + f->ts_middle = !!(p[3] & 0x40); +} + +static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse) +{ + f->first_mp = !!(p[4] & 0x40); + f->is_mp = !!(p[0] & 0x40); + + f->fingers = (p[5] & 0x3) + 1; + f->x_map = ((p[4] & 0x7e) << 8) | + ((p[1] & 0x7f) << 2) | + ((p[0] & 0x30) >> 4); + f->y_map = ((p[3] & 0x70) << 4) | + ((p[2] & 0x7f) << 1) | + (p[4] & 0x01); + + f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | + ((p[0] & 0x30) >> 4); + f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); + f->pressure = p[5] & 0x7f; + + alps_decode_buttons_v3(f, p); + + return 0; +} + +static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse) +{ + alps_decode_pinnacle(f, p, psmouse); + + /* Rushmore's packet decode has a bit difference with Pinnacle's */ + f->is_mp = !!(p[5] & 0x40); + f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; + f->x_map |= (p[5] & 0x10) << 11; + f->y_map |= (p[5] & 0x20) << 6; + + return 0; +} + +static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse) +{ + u64 palm_data = 0; + struct alps_data *priv = psmouse->private; + + f->first_mp = !!(p[0] & 0x02); + f->is_mp = !!(p[0] & 0x20); + + if (!f->is_mp) { + f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); + f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); + f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; + alps_decode_buttons_v3(f, p); + } else { + f->fingers = ((p[0] & 0x6) >> 1 | + (p[0] & 0x10) >> 2); + + palm_data = (p[1] & 0x7f) | + ((p[2] & 0x7f) << 7) | + ((p[4] & 0x7f) << 14) | + ((p[5] & 0x7f) << 21) | + ((p[3] & 0x07) << 28) | + (((u64)p[3] & 0x70) << 27) | + (((u64)p[0] & 0x01) << 34); + + /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ + f->y_map = palm_data & (BIT(priv->y_bits) - 1); + + /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ + f->x_map = (palm_data >> priv->y_bits) & + (BIT(priv->x_bits) - 1); + } + + return 0; +} + +static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev2 = priv->dev2; + struct alps_fields *f = &priv->f; + int fingers = 0; + + memset(f, 0, sizeof(*f)); + + priv->decode_fields(f, packet, psmouse); + + /* + * There's no single feature of touchpad position and bitmap packets + * that can be used to distinguish between them. We rely on the fact + * that a bitmap packet should always follow a position packet with + * bit 6 of packet[4] set. + */ + if (priv->multi_packet) { + /* + * Sometimes a position packet will indicate a multi-packet + * sequence, but then what follows is another position + * packet. Check for this, and when it happens process the + * position packet as usual. + */ + if (f->is_mp) { + fingers = f->fingers; + if (priv->proto_version == ALPS_PROTO_V3 || + priv->proto_version == ALPS_PROTO_V3_RUSHMORE) { + if (alps_process_bitmap(priv, f) == 0) + fingers = 0; /* Use st data */ + + /* Now process position packet */ + priv->decode_fields(f, priv->multi_data, + psmouse); + } else { + /* + * Because Dolphin uses position packet's + * coordinate data as Pt1 and uses it to + * calculate Pt2, so we need to do position + * packet decode first. + */ + priv->decode_fields(f, priv->multi_data, + psmouse); + + /* + * Since Dolphin's finger number is reliable, + * there is no need to compare with bmap_fn. + */ + alps_process_bitmap_dolphin(priv, f); + } + } else { + priv->multi_packet = 0; + } + } + + /* + * Bit 6 of byte 0 is not usually set in position packets. The only + * times it seems to be set is in situations where the data is + * suspect anyway, e.g. a palm resting flat on the touchpad. Given + * this combined with the fact that this bit is useful for filtering + * out misidentified bitmap packets, we reject anything with this + * bit set. + */ + if (f->is_mp) + return; + + if (!priv->multi_packet && f->first_mp) { + priv->multi_packet = 1; + memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); + return; + } + + priv->multi_packet = 0; + + /* + * Sometimes the hardware sends a single packet with z = 0 + * in the middle of a stream. Real releases generate packets + * with x, y, and z all zero, so these seem to be flukes. + * Ignore them. + */ + if (f->st.x && f->st.y && !f->pressure) + return; + + alps_report_semi_mt_data(psmouse, fingers); + + if ((priv->flags & ALPS_DUALPOINT) && + !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { + input_report_key(dev2, BTN_LEFT, f->ts_left); + input_report_key(dev2, BTN_RIGHT, f->ts_right); + input_report_key(dev2, BTN_MIDDLE, f->ts_middle); + input_sync(dev2); + } +} + +static void alps_process_packet_v3(struct psmouse *psmouse) +{ + unsigned char *packet = psmouse->packet; + + /* + * v3 protocol packets come in three types, two representing + * touchpad data and one representing trackstick data. + * Trackstick packets seem to be distinguished by always + * having 0x3f in the last byte. This value has never been + * observed in the last byte of either of the other types + * of packets. + */ + if (packet[5] == 0x3f) { + alps_process_trackstick_packet_v3(psmouse); + return; + } + + alps_process_touchpad_packet_v3_v5(psmouse); +} + +static void alps_process_packet_v6(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev = psmouse->dev; + struct input_dev *dev2 = priv->dev2; + int x, y, z, left, right, middle; + + /* + * We can use Byte5 to distinguish if the packet is from Touchpad + * or Trackpoint. + * Touchpad: 0 - 0x7E + * Trackpoint: 0x7F + */ + if (packet[5] == 0x7F) { + /* It should be a DualPoint when received Trackpoint packet */ + if (!(priv->flags & ALPS_DUALPOINT)) { + psmouse_warn(psmouse, + "Rejected trackstick packet from non DualPoint device"); + return; + } + + /* Trackpoint packet */ + x = packet[1] | ((packet[3] & 0x20) << 2); + y = packet[2] | ((packet[3] & 0x40) << 1); + z = packet[4]; + left = packet[3] & 0x01; + right = packet[3] & 0x02; + middle = packet[3] & 0x04; + + /* To prevent the cursor jump when finger lifted */ + if (x == 0x7F && y == 0x7F && z == 0x7F) + x = y = z = 0; + + /* Divide 4 since trackpoint's speed is too fast */ + input_report_rel(dev2, REL_X, (char)x / 4); + input_report_rel(dev2, REL_Y, -((char)y / 4)); + + input_report_key(dev2, BTN_LEFT, left); + input_report_key(dev2, BTN_RIGHT, right); + input_report_key(dev2, BTN_MIDDLE, middle); + + input_sync(dev2); + return; + } + + /* Touchpad packet */ + x = packet[1] | ((packet[3] & 0x78) << 4); + y = packet[2] | ((packet[4] & 0x78) << 4); + z = packet[5]; + left = packet[3] & 0x01; + right = packet[3] & 0x02; + + if (z > 30) + input_report_key(dev, BTN_TOUCH, 1); + if (z < 25) + input_report_key(dev, BTN_TOUCH, 0); + + if (z > 0) { + input_report_abs(dev, ABS_X, x); + input_report_abs(dev, ABS_Y, y); + } + + input_report_abs(dev, ABS_PRESSURE, z); + input_report_key(dev, BTN_TOOL_FINGER, z > 0); + + /* v6 touchpad does not have middle button */ + input_report_key(dev, BTN_LEFT, left); + input_report_key(dev, BTN_RIGHT, right); + + input_sync(dev); +} + +static void alps_process_packet_v4(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct alps_fields *f = &priv->f; + int offset; + + /* + * v4 has a 6-byte encoding for bitmap data, but this data is + * broken up between 3 normal packets. Use priv->multi_packet to + * track our position in the bitmap packet. + */ + if (packet[6] & 0x40) { + /* sync, reset position */ + priv->multi_packet = 0; + } + + if (WARN_ON_ONCE(priv->multi_packet > 2)) + return; + + offset = 2 * priv->multi_packet; + priv->multi_data[offset] = packet[6]; + priv->multi_data[offset + 1] = packet[7]; + + if (++priv->multi_packet > 2) { + priv->multi_packet = 0; + + f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | + ((priv->multi_data[3] & 0x60) << 3) | + ((priv->multi_data[0] & 0x3f) << 2) | + ((priv->multi_data[1] & 0x60) >> 5); + f->y_map = ((priv->multi_data[5] & 0x01) << 10) | + ((priv->multi_data[3] & 0x1f) << 5) | + (priv->multi_data[1] & 0x1f); + + f->fingers = alps_process_bitmap(priv, f); + } + + f->left = !!(packet[4] & 0x01); + f->right = !!(packet[4] & 0x02); + + f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | + ((packet[0] & 0x30) >> 4); + f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); + f->pressure = packet[5] & 0x7f; + + alps_report_semi_mt_data(psmouse, f->fingers); +} + +static bool alps_is_valid_package_v7(struct psmouse *psmouse) +{ + switch (psmouse->pktcnt) { + case 3: + return (psmouse->packet[2] & 0x40) == 0x40; + case 4: + return (psmouse->packet[3] & 0x48) == 0x48; + case 6: + return (psmouse->packet[5] & 0x40) == 0x00; + } + return true; +} + +static unsigned char alps_get_packet_id_v7(char *byte) +{ + unsigned char packet_id; + + if (byte[4] & 0x40) + packet_id = V7_PACKET_ID_TWO; + else if (byte[4] & 0x01) + packet_id = V7_PACKET_ID_MULTI; + else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) + packet_id = V7_PACKET_ID_NEW; + else if (byte[1] == 0x00 && byte[4] == 0x00) + packet_id = V7_PACKET_ID_IDLE; + else + packet_id = V7_PACKET_ID_UNKNOWN; + + return packet_id; +} + +static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, + unsigned char *pkt, + unsigned char pkt_id) +{ + mt[0].x = ((pkt[2] & 0x80) << 4); + mt[0].x |= ((pkt[2] & 0x3F) << 5); + mt[0].x |= ((pkt[3] & 0x30) >> 1); + mt[0].x |= (pkt[3] & 0x07); + mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); + + mt[1].x = ((pkt[3] & 0x80) << 4); + mt[1].x |= ((pkt[4] & 0x80) << 3); + mt[1].x |= ((pkt[4] & 0x3F) << 4); + mt[1].y = ((pkt[5] & 0x80) << 3); + mt[1].y |= ((pkt[5] & 0x3F) << 4); + + switch (pkt_id) { + case V7_PACKET_ID_TWO: + mt[1].x &= ~0x000F; + mt[1].y |= 0x000F; + /* Detect false-postive touches where x & y report max value */ + if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { + mt[1].x = 0; + /* y gets set to 0 at the end of this function */ + } + break; + + case V7_PACKET_ID_MULTI: + mt[1].x &= ~0x003F; + mt[1].y &= ~0x0020; + mt[1].y |= ((pkt[4] & 0x02) << 4); + mt[1].y |= 0x001F; + break; + + case V7_PACKET_ID_NEW: + mt[1].x &= ~0x003F; + mt[1].x |= (pkt[0] & 0x20); + mt[1].y |= 0x000F; + break; + } + + mt[0].y = 0x7FF - mt[0].y; + mt[1].y = 0x7FF - mt[1].y; +} + +static int alps_get_mt_count(struct input_mt_pos *mt) +{ + int i, fingers = 0; + + for (i = 0; i < MAX_TOUCHES; i++) { + if (mt[i].x != 0 || mt[i].y != 0) + fingers++; + } + + return fingers; +} + +static int alps_decode_packet_v7(struct alps_fields *f, + unsigned char *p, + struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char pkt_id; + + pkt_id = alps_get_packet_id_v7(p); + if (pkt_id == V7_PACKET_ID_IDLE) + return 0; + if (pkt_id == V7_PACKET_ID_UNKNOWN) + return -1; + /* + * NEW packets are send to indicate a discontinuity in the finger + * coordinate reporting. Specifically a finger may have moved from + * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for + * us. + * + * NEW packets have 3 problems: + * 1) They do not contain middle / right button info (on non clickpads) + * this can be worked around by preserving the old button state + * 2) They do not contain an accurate fingercount, and they are + * typically send when the number of fingers changes. We cannot use + * the old finger count as that may mismatch with the amount of + * touch coordinates we've available in the NEW packet + * 3) Their x data for the second touch is inaccurate leading to + * a possible jump of the x coordinate by 16 units when the first + * non NEW packet comes in + * Since problems 2 & 3 cannot be worked around, just ignore them. + */ + if (pkt_id == V7_PACKET_ID_NEW) + return 1; + + alps_get_finger_coordinate_v7(f->mt, p, pkt_id); + + if (pkt_id == V7_PACKET_ID_TWO) + f->fingers = alps_get_mt_count(f->mt); + else /* pkt_id == V7_PACKET_ID_MULTI */ + f->fingers = 3 + (p[5] & 0x03); + + f->left = (p[0] & 0x80) >> 7; + if (priv->flags & ALPS_BUTTONPAD) { + if (p[0] & 0x20) + f->fingers++; + if (p[0] & 0x10) + f->fingers++; + } else { + f->right = (p[0] & 0x20) >> 5; + f->middle = (p[0] & 0x10) >> 4; + } + + /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ + if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { + f->mt[0].x = f->mt[1].x; + f->mt[0].y = f->mt[1].y; + f->mt[1].x = 0; + f->mt[1].y = 0; + } + + return 0; +} + +static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev2 = priv->dev2; + int x, y, z, left, right, middle; + + /* It should be a DualPoint when received trackstick packet */ + if (!(priv->flags & ALPS_DUALPOINT)) { + psmouse_warn(psmouse, + "Rejected trackstick packet from non DualPoint device"); + return; + } + + x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); + y = (packet[3] & 0x07) | (packet[4] & 0xb8) | + ((packet[3] & 0x20) << 1); + z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); + + left = (packet[1] & 0x01); + right = (packet[1] & 0x02) >> 1; + middle = (packet[1] & 0x04) >> 2; + + input_report_rel(dev2, REL_X, (char)x); + input_report_rel(dev2, REL_Y, -((char)y)); + + input_report_key(dev2, BTN_LEFT, left); + input_report_key(dev2, BTN_RIGHT, right); + input_report_key(dev2, BTN_MIDDLE, middle); + + input_sync(dev2); +} + +static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + struct input_dev *dev = psmouse->dev; + struct alps_fields *f = &priv->f; + + memset(f, 0, sizeof(*f)); + + if (priv->decode_fields(f, psmouse->packet, psmouse)) + return; + + alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); + + input_mt_report_finger_count(dev, f->fingers); + + input_report_key(dev, BTN_LEFT, f->left); + input_report_key(dev, BTN_RIGHT, f->right); + input_report_key(dev, BTN_MIDDLE, f->middle); + + input_sync(dev); +} + +static void alps_process_packet_v7(struct psmouse *psmouse) +{ + unsigned char *packet = psmouse->packet; + + if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) + alps_process_trackstick_packet_v7(psmouse); + else + alps_process_touchpad_packet_v7(psmouse); +} + +static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) +{ + unsigned char pkt_id = SS4_PACKET_ID_IDLE; + + if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && + (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) { + pkt_id = SS4_PACKET_ID_IDLE; + } else if (!(byte[3] & 0x10)) { + pkt_id = SS4_PACKET_ID_ONE; + } else if (!(byte[3] & 0x20)) { + pkt_id = SS4_PACKET_ID_TWO; + } else { + pkt_id = SS4_PACKET_ID_MULTI; + } + + return pkt_id; +} + +static int alps_decode_ss4_v2(struct alps_fields *f, + unsigned char *p, struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char pkt_id; + unsigned int no_data_x, no_data_y; + + pkt_id = alps_get_pkt_id_ss4_v2(p); + + /* Current packet is 1Finger coordinate packet */ + switch (pkt_id) { + case SS4_PACKET_ID_ONE: + f->mt[0].x = SS4_1F_X_V2(p); + f->mt[0].y = SS4_1F_Y_V2(p); + f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; + f->fingers = 1; + f->first_mp = 0; + f->is_mp = 0; + break; + + case SS4_PACKET_ID_TWO: + if (priv->flags & ALPS_BUTTONPAD) { + f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); + f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); + f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); + f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); + } else { + f->mt[0].x = SS4_STD_MF_X_V2(p, 0); + f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); + f->mt[1].x = SS4_STD_MF_X_V2(p, 1); + f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); + } + f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; + + if (SS4_IS_MF_CONTINUE(p)) { + f->first_mp = 1; + } else { + f->fingers = 2; + f->first_mp = 0; + } + f->is_mp = 0; + + break; + + case SS4_PACKET_ID_MULTI: + if (priv->flags & ALPS_BUTTONPAD) { + f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); + f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); + f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); + f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); + no_data_x = SS4_MFPACKET_NO_AX_BL; + no_data_y = SS4_MFPACKET_NO_AY_BL; + } else { + f->mt[2].x = SS4_STD_MF_X_V2(p, 0); + f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); + f->mt[3].x = SS4_STD_MF_X_V2(p, 1); + f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); + no_data_x = SS4_MFPACKET_NO_AX; + no_data_y = SS4_MFPACKET_NO_AY; + } + + f->first_mp = 0; + f->is_mp = 1; + + if (SS4_IS_5F_DETECTED(p)) { + f->fingers = 5; + } else if (f->mt[3].x == no_data_x && + f->mt[3].y == no_data_y) { + f->mt[3].x = 0; + f->mt[3].y = 0; + f->fingers = 3; + } else { + f->fingers = 4; + } + break; + + case SS4_PACKET_ID_IDLE: + default: + memset(f, 0, sizeof(struct alps_fields)); + break; + } + + f->left = !!(SS4_BTN_V2(p) & 0x01); + if (!(priv->flags & ALPS_BUTTONPAD)) { + f->right = !!(SS4_BTN_V2(p) & 0x02); + f->middle = !!(SS4_BTN_V2(p) & 0x04); + } + + return 0; +} + +static void alps_process_packet_ss4_v2(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev = psmouse->dev; + struct alps_fields *f = &priv->f; + + memset(f, 0, sizeof(struct alps_fields)); + priv->decode_fields(f, packet, psmouse); + if (priv->multi_packet) { + /* + * Sometimes the first packet will indicate a multi-packet + * sequence, but sometimes the next multi-packet would not + * come. Check for this, and when it happens process the + * position packet as usual. + */ + if (f->is_mp) { + /* Now process the 1st packet */ + priv->decode_fields(f, priv->multi_data, psmouse); + } else { + priv->multi_packet = 0; + } + } + + /* + * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. + * When it is set, it means 2nd packet comes without 1st packet come. + */ + if (f->is_mp) + return; + + /* Save the first packet */ + if (!priv->multi_packet && f->first_mp) { + priv->multi_packet = 1; + memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); + return; + } + + priv->multi_packet = 0; + + alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); + + input_mt_report_finger_count(dev, f->fingers); + + input_report_key(dev, BTN_LEFT, f->left); + input_report_key(dev, BTN_RIGHT, f->right); + input_report_key(dev, BTN_MIDDLE, f->middle); + + input_report_abs(dev, ABS_PRESSURE, f->pressure); + input_sync(dev); +} + +static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) +{ + if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) + return false; + if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) + return false; + return true; +} + +static DEFINE_MUTEX(alps_mutex); + +static void alps_register_bare_ps2_mouse(struct work_struct *work) +{ + struct alps_data *priv = + container_of(work, struct alps_data, dev3_register_work.work); + struct psmouse *psmouse = priv->psmouse; + struct input_dev *dev3; + int error = 0; + + mutex_lock(&alps_mutex); + + if (priv->dev3) + goto out; + + dev3 = input_allocate_device(); + if (!dev3) { + psmouse_err(psmouse, "failed to allocate secondary device\n"); + error = -ENOMEM; + goto out; + } + + snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", + psmouse->ps2dev.serio->phys, + (priv->dev2 ? "input2" : "input1")); + dev3->phys = priv->phys3; + + /* + * format of input device name is: "protocol vendor name" + * see function psmouse_switch_protocol() in psmouse-base.c + */ + dev3->name = "PS/2 ALPS Mouse"; + + dev3->id.bustype = BUS_I8042; + dev3->id.vendor = 0x0002; + dev3->id.product = PSMOUSE_PS2; + dev3->id.version = 0x0000; + dev3->dev.parent = &psmouse->ps2dev.serio->dev; + + input_set_capability(dev3, EV_REL, REL_X); + input_set_capability(dev3, EV_REL, REL_Y); + input_set_capability(dev3, EV_KEY, BTN_LEFT); + input_set_capability(dev3, EV_KEY, BTN_RIGHT); + input_set_capability(dev3, EV_KEY, BTN_MIDDLE); + + __set_bit(INPUT_PROP_POINTER, dev3->propbit); + + error = input_register_device(dev3); + if (error) { + psmouse_err(psmouse, + "failed to register secondary device: %d\n", + error); + input_free_device(dev3); + goto out; + } + + priv->dev3 = dev3; + +out: + /* + * Save the error code so that we can detect that we + * already tried to create the device. + */ + if (error) + priv->dev3 = ERR_PTR(error); + + mutex_unlock(&alps_mutex); +} + +static void alps_report_bare_ps2_packet(struct psmouse *psmouse, + unsigned char packet[], + bool report_buttons) +{ + struct alps_data *priv = psmouse->private; + struct input_dev *dev, *dev2 = NULL; + + /* Figure out which device to use to report the bare packet */ + if (priv->proto_version == ALPS_PROTO_V2 && + (priv->flags & ALPS_DUALPOINT)) { + /* On V2 devices the DualPoint Stick reports bare packets */ + dev = priv->dev2; + dev2 = psmouse->dev; + } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { + /* Register dev3 mouse if we received PS/2 packet first time */ + if (!IS_ERR(priv->dev3)) + psmouse_queue_work(psmouse, &priv->dev3_register_work, + 0); + return; + } else { + dev = priv->dev3; + } + + if (report_buttons) + alps_report_buttons(dev, dev2, + packet[0] & 1, packet[0] & 2, packet[0] & 4); + + input_report_rel(dev, REL_X, + packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); + input_report_rel(dev, REL_Y, + packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); + + input_sync(dev); +} + +static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + + if (psmouse->pktcnt < 6) + return PSMOUSE_GOOD_DATA; + + if (psmouse->pktcnt == 6) { + /* + * Start a timer to flush the packet if it ends up last + * 6-byte packet in the stream. Timer needs to fire + * psmouse core times out itself. 20 ms should be enough + * to decide if we are getting more data or not. + */ + mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); + return PSMOUSE_GOOD_DATA; + } + + del_timer(&priv->timer); + + if (psmouse->packet[6] & 0x80) { + + /* + * Highest bit is set - that means we either had + * complete ALPS packet and this is start of the + * next packet or we got garbage. + */ + + if (((psmouse->packet[3] | + psmouse->packet[4] | + psmouse->packet[5]) & 0x80) || + (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { + psmouse_dbg(psmouse, + "refusing packet %4ph (suspected interleaved ps/2)\n", + psmouse->packet + 3); + return PSMOUSE_BAD_DATA; + } + + priv->process_packet(psmouse); + + /* Continue with the next packet */ + psmouse->packet[0] = psmouse->packet[6]; + psmouse->pktcnt = 1; + + } else { + + /* + * High bit is 0 - that means that we indeed got a PS/2 + * packet in the middle of ALPS packet. + * + * There is also possibility that we got 6-byte ALPS + * packet followed by 3-byte packet from trackpoint. We + * can not distinguish between these 2 scenarios but + * because the latter is unlikely to happen in course of + * normal operation (user would need to press all + * buttons on the pad and start moving trackpoint + * without touching the pad surface) we assume former. + * Even if we are wrong the wost thing that would happen + * the cursor would jump but we should not get protocol + * de-synchronization. + */ + + alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], + false); + + /* + * Continue with the standard ALPS protocol handling, + * but make sure we won't process it as an interleaved + * packet again, which may happen if all buttons are + * pressed. To avoid this let's reset the 4th bit which + * is normally 1. + */ + psmouse->packet[3] = psmouse->packet[6] & 0xf7; + psmouse->pktcnt = 4; + } + + return PSMOUSE_GOOD_DATA; +} + +static void alps_flush_packet(unsigned long data) +{ + struct psmouse *psmouse = (struct psmouse *)data; + struct alps_data *priv = psmouse->private; + + serio_pause_rx(psmouse->ps2dev.serio); + + if (psmouse->pktcnt == psmouse->pktsize) { + + /* + * We did not any more data in reasonable amount of time. + * Validate the last 3 bytes and process as a standard + * ALPS packet. + */ + if ((psmouse->packet[3] | + psmouse->packet[4] | + psmouse->packet[5]) & 0x80) { + psmouse_dbg(psmouse, + "refusing packet %3ph (suspected interleaved ps/2)\n", + psmouse->packet + 3); + } else { + priv->process_packet(psmouse); + } + psmouse->pktcnt = 0; + } + + serio_continue_rx(psmouse->ps2dev.serio); +} + +static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + + /* + * Check if we are dealing with a bare PS/2 packet, presumably from + * a device connected to the external PS/2 port. Because bare PS/2 + * protocol does not have enough constant bits to self-synchronize + * properly we only do this if the device is fully synchronized. + * Can not distinguish V8's first byte from PS/2 packet's + */ + if (priv->proto_version != ALPS_PROTO_V8 && + !psmouse->out_of_sync_cnt && + (psmouse->packet[0] & 0xc8) == 0x08) { + + if (psmouse->pktcnt == 3) { + alps_report_bare_ps2_packet(psmouse, psmouse->packet, + true); + return PSMOUSE_FULL_PACKET; + } + return PSMOUSE_GOOD_DATA; + } + + /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ + + if ((priv->flags & ALPS_PS2_INTERLEAVED) && + psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { + return alps_handle_interleaved_ps2(psmouse); + } + + if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { + psmouse_dbg(psmouse, + "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", + psmouse->packet[0], priv->mask0, priv->byte0); + return PSMOUSE_BAD_DATA; + } + + /* Bytes 2 - pktsize should have 0 in the highest bit */ + if (priv->proto_version < ALPS_PROTO_V5 && + psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && + (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { + psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", + psmouse->pktcnt - 1, + psmouse->packet[psmouse->pktcnt - 1]); + + if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && + psmouse->pktcnt == psmouse->pktsize) { + /* + * Some Dell boxes, such as Latitude E6440 or E7440 + * with closed lid, quite often smash last byte of + * otherwise valid packet with 0xff. Given that the + * next packet is very likely to be valid let's + * report PSMOUSE_FULL_PACKET but not process data, + * rather than reporting PSMOUSE_BAD_DATA and + * filling the logs. + */ + return PSMOUSE_FULL_PACKET; + } + + return PSMOUSE_BAD_DATA; + } + + if ((priv->proto_version == ALPS_PROTO_V7 && + !alps_is_valid_package_v7(psmouse)) || + (priv->proto_version == ALPS_PROTO_V8 && + !alps_is_valid_package_ss4_v2(psmouse))) { + psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", + psmouse->pktcnt - 1, + psmouse->packet[psmouse->pktcnt - 1]); + return PSMOUSE_BAD_DATA; + } + + if (psmouse->pktcnt == psmouse->pktsize) { + priv->process_packet(psmouse); + return PSMOUSE_FULL_PACKET; + } + + return PSMOUSE_GOOD_DATA; +} + +static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + struct alps_data *priv = psmouse->private; + int command; + unsigned char *param; + unsigned char dummy[4]; + + BUG_ON(nibble > 0xf); + + command = priv->nibble_commands[nibble].command; + param = (command & 0x0f00) ? + dummy : (unsigned char *)&priv->nibble_commands[nibble].data; + + if (ps2_command(ps2dev, param, command)) + return -1; + + return 0; +} + +static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + struct alps_data *priv = psmouse->private; + int i, nibble; + + if (ps2_command(ps2dev, NULL, priv->addr_command)) + return -1; + + for (i = 12; i >= 0; i -= 4) { + nibble = (addr >> i) & 0xf; + if (alps_command_mode_send_nibble(psmouse, nibble)) + return -1; + } + + return 0; +} + +static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[4]; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) + return -1; + + /* + * The address being read is returned in the first two bytes + * of the result. Check that this address matches the expected + * address. + */ + if (addr != ((param[0] << 8) | param[1])) + return -1; + + return param[2]; +} + +static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) +{ + if (alps_command_mode_set_addr(psmouse, addr)) + return -1; + return __alps_command_mode_read_reg(psmouse, addr); +} + +static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) +{ + if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) + return -1; + if (alps_command_mode_send_nibble(psmouse, value & 0xf)) + return -1; + return 0; +} + +static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, + u8 value) +{ + if (alps_command_mode_set_addr(psmouse, addr)) + return -1; + return __alps_command_mode_write_reg(psmouse, value); +} + +static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, + int repeated_command, unsigned char *param) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + param[0] = 0; + if (init_command && ps2_command(ps2dev, param, init_command)) + return -EIO; + + if (ps2_command(ps2dev, NULL, repeated_command) || + ps2_command(ps2dev, NULL, repeated_command) || + ps2_command(ps2dev, NULL, repeated_command)) + return -EIO; + + param[0] = param[1] = param[2] = 0xff; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) + return -EIO; + + psmouse_dbg(psmouse, "%2.2X report: %3ph\n", + repeated_command, param); + return 0; +} + +static bool alps_check_valid_firmware_id(unsigned char id[]) +{ + if (id[0] == 0x73) + return true; + + if (id[0] == 0x88 && + (id[1] == 0x07 || + id[1] == 0x08 || + (id[1] & 0xf0) == 0xb0 || + (id[1] & 0xf0) == 0xc0)) { + return true; + } + + return false; +} + +static int alps_enter_command_mode(struct psmouse *psmouse) +{ + unsigned char param[4]; + + if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { + psmouse_err(psmouse, "failed to enter command mode\n"); + return -1; + } + + if (!alps_check_valid_firmware_id(param)) { + psmouse_dbg(psmouse, + "unknown response while entering command mode\n"); + return -1; + } + return 0; +} + +static inline int alps_exit_command_mode(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) + return -1; + return 0; +} + +/* + * For DualPoint devices select the device that should respond to + * subsequent commands. It looks like glidepad is behind stickpointer, + * I'd thought it would be other way around... + */ +static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; + + if (ps2_command(ps2dev, NULL, cmd) || + ps2_command(ps2dev, NULL, cmd) || + ps2_command(ps2dev, NULL, cmd) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) + return -1; + + /* we may get 3 more bytes, just ignore them */ + ps2_drain(ps2dev, 3, 100); + + return 0; +} + +static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + /* Try ALPS magic knock - 4 disable before enable */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) + return -1; + + /* + * Switch mouse to poll (remote) mode so motion data will not + * get in our way + */ + return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); +} + +static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) +{ + int i, nibble; + + /* + * b0-b11 are valid bits, send sequence is inverse. + * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 + */ + for (i = 0; i <= 8; i += 4) { + nibble = (word >> i) & 0xf; + if (alps_command_mode_send_nibble(psmouse, nibble)) + return -1; + } + + return 0; +} + +static int alps_monitor_mode_write_reg(struct psmouse *psmouse, + u16 addr, u16 value) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + /* 0x0A0 is the command to write the word */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || + alps_monitor_mode_send_word(psmouse, 0x0A0) || + alps_monitor_mode_send_word(psmouse, addr) || + alps_monitor_mode_send_word(psmouse, value) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) + return -1; + + return 0; +} + +static int alps_monitor_mode(struct psmouse *psmouse, bool enable) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + if (enable) { + /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) + return -1; + } else { + /* EC to exit monitor mode */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) + return -1; + } + + return 0; +} + +static int alps_absolute_mode_v6(struct psmouse *psmouse) +{ + u16 reg_val = 0x181; + int ret = -1; + + /* enter monitor mode, to write the register */ + if (alps_monitor_mode(psmouse, true)) + return -1; + + ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); + + if (alps_monitor_mode(psmouse, false)) + ret = -1; + + return ret; +} + +static int alps_get_status(struct psmouse *psmouse, char *param) +{ + /* Get status: 0xF5 0xF5 0xF5 0xE9 */ + if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) + return -1; + + return 0; +} + +/* + * Turn touchpad tapping on or off. The sequences are: + * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, + * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. + * My guess that 0xE9 (GetInfo) is here as a sync point. + * For models that also have stickpointer (DualPoints) its tapping + * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but + * we don't fiddle with it. + */ +static int alps_tap_mode(struct psmouse *psmouse, int enable) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; + unsigned char tap_arg = enable ? 0x0A : 0x00; + unsigned char param[4]; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || + ps2_command(ps2dev, &tap_arg, cmd)) + return -1; + + if (alps_get_status(psmouse, param)) + return -1; + + return 0; +} + +/* + * alps_poll() - poll the touchpad for current motion packet. + * Used in resync. + */ +static int alps_poll(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char buf[sizeof(psmouse->packet)]; + bool poll_failed; + + if (priv->flags & ALPS_PASS) + alps_passthrough_mode_v2(psmouse, true); + + poll_failed = ps2_command(&psmouse->ps2dev, buf, + PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; + + if (priv->flags & ALPS_PASS) + alps_passthrough_mode_v2(psmouse, false); + + if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) + return -1; + + if ((psmouse->badbyte & 0xc8) == 0x08) { +/* + * Poll the track stick ... + */ + if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) + return -1; + } + + memcpy(psmouse->packet, buf, sizeof(buf)); + return 0; +} + +static int alps_hw_init_v1_v2(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + + if ((priv->flags & ALPS_PASS) && + alps_passthrough_mode_v2(psmouse, true)) { + return -1; + } + + if (alps_tap_mode(psmouse, true)) { + psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); + return -1; + } + + if (alps_absolute_mode_v1_v2(psmouse)) { + psmouse_err(psmouse, "Failed to enable absolute mode\n"); + return -1; + } + + if ((priv->flags & ALPS_PASS) && + alps_passthrough_mode_v2(psmouse, false)) { + return -1; + } + + /* ALPS needs stream mode, otherwise it won't report any data */ + if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { + psmouse_err(psmouse, "Failed to enable stream mode\n"); + return -1; + } + + return 0; +} + +static int alps_hw_init_v6(struct psmouse *psmouse) +{ + unsigned char param[2] = {0xC8, 0x14}; + + /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ + if (alps_passthrough_mode_v2(psmouse, true)) + return -1; + + if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) + return -1; + + if (alps_passthrough_mode_v2(psmouse, false)) + return -1; + + if (alps_absolute_mode_v6(psmouse)) { + psmouse_err(psmouse, "Failed to enable absolute mode\n"); + return -1; + } + + return 0; +} + +/* + * Enable or disable passthrough mode to the trackstick. + */ +static int alps_passthrough_mode_v3(struct psmouse *psmouse, + int reg_base, bool enable) +{ + int reg_val, ret = -1; + + if (alps_enter_command_mode(psmouse)) + return -1; + + reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); + if (reg_val == -1) + goto error; + + if (enable) + reg_val |= 0x01; + else + reg_val &= ~0x01; + + ret = __alps_command_mode_write_reg(psmouse, reg_val); + +error: + if (alps_exit_command_mode(psmouse)) + ret = -1; + return ret; +} + +/* Must be in command mode when calling this function */ +static int alps_absolute_mode_v3(struct psmouse *psmouse) +{ + int reg_val; + + reg_val = alps_command_mode_read_reg(psmouse, 0x0004); + if (reg_val == -1) + return -1; + + reg_val |= 0x06; + if (__alps_command_mode_write_reg(psmouse, reg_val)) + return -1; + + return 0; +} + +static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) +{ + int ret = -EIO, reg_val; + + if (alps_enter_command_mode(psmouse)) + goto error; + + reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); + if (reg_val == -1) + goto error; + + /* bit 7: trackstick is present */ + ret = reg_val & 0x80 ? 0 : -ENODEV; + +error: + alps_exit_command_mode(psmouse); + return ret; +} + +static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + int ret = 0; + unsigned char param[4]; + + if (alps_passthrough_mode_v3(psmouse, reg_base, true)) + return -EIO; + + /* + * E7 report for the trackstick + * + * There have been reports of failures to seem to trace back + * to the above trackstick check failing. When these occur + * this E7 report fails, so when that happens we continue + * with the assumption that there isn't a trackstick after + * all. + */ + if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { + psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); + ret = -ENODEV; + } else { + psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); + + /* + * Not sure what this does, but it is absolutely + * essential. Without it, the touchpad does not + * work at all and the trackstick just emits normal + * PS/2 packets. + */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || + alps_command_mode_send_nibble(psmouse, 0x9) || + alps_command_mode_send_nibble(psmouse, 0x4)) { + psmouse_err(psmouse, + "Error sending magic E6 sequence\n"); + ret = -EIO; + goto error; + } + + /* + * This ensures the trackstick packets are in the format + * supported by this driver. If bit 1 isn't set the packet + * format is different. + */ + if (alps_enter_command_mode(psmouse) || + alps_command_mode_write_reg(psmouse, + reg_base + 0x08, 0x82) || + alps_exit_command_mode(psmouse)) + ret = -EIO; + } + +error: + if (alps_passthrough_mode_v3(psmouse, reg_base, false)) + ret = -EIO; + + return ret; +} + +static int alps_hw_init_v3(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + int reg_val; + unsigned char param[4]; + + reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE); + if (reg_val == -EIO) + goto error; + + if (reg_val == 0 && + alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) + goto error; + + if (alps_enter_command_mode(psmouse) || + alps_absolute_mode_v3(psmouse)) { + psmouse_err(psmouse, "Failed to enter absolute mode\n"); + goto error; + } + + reg_val = alps_command_mode_read_reg(psmouse, 0x0006); + if (reg_val == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) + goto error; + + reg_val = alps_command_mode_read_reg(psmouse, 0x0007); + if (reg_val == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) + goto error; + + if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, 0x04)) + goto error; + + if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, 0x03)) + goto error; + + if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) + goto error; + if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) + goto error; + + if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) + goto error; + if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) + goto error; + + alps_exit_command_mode(psmouse); + + /* Set rate and enable data reporting */ + param[0] = 0x64; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { + psmouse_err(psmouse, "Failed to enable data reporting\n"); + return -1; + } + + return 0; + +error: + /* + * Leaving the touchpad in command mode will essentially render + * it unusable until the machine reboots, so exit it here just + * to be safe + */ + alps_exit_command_mode(psmouse); + return -1; +} + +static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) +{ + int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; + struct alps_data *priv = psmouse->private; + + reg = alps_command_mode_read_reg(psmouse, reg_pitch); + if (reg < 0) + return reg; + + x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ + x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ + + y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */ + y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ + + reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); + if (reg < 0) + return reg; + + x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */ + x_electrode = 17 + x_electrode; + + y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */ + y_electrode = 13 + y_electrode; + + x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ + y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ + + priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ + priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ + + psmouse_dbg(psmouse, + "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", + x_pitch, y_pitch, x_electrode, y_electrode, + x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); + + return 0; +} + +static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + struct ps2dev *ps2dev = &psmouse->ps2dev; + int reg_val, ret = -1; + + if (priv->flags & ALPS_DUALPOINT) { + reg_val = alps_setup_trackstick_v3(psmouse, + ALPS_REG_BASE_RUSHMORE); + if (reg_val == -EIO) + goto error; + } + + if (alps_enter_command_mode(psmouse) || + alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || + alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) + goto error; + + if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) + goto error; + + reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); + if (reg_val == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) + goto error; + + /* enter absolute mode */ + reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); + if (reg_val == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) + goto error; + + alps_exit_command_mode(psmouse); + return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); + +error: + alps_exit_command_mode(psmouse); + return ret; +} + +/* Must be in command mode when calling this function */ +static int alps_absolute_mode_v4(struct psmouse *psmouse) +{ + int reg_val; + + reg_val = alps_command_mode_read_reg(psmouse, 0x0004); + if (reg_val == -1) + return -1; + + reg_val |= 0x02; + if (__alps_command_mode_write_reg(psmouse, reg_val)) + return -1; + + return 0; +} + +static int alps_hw_init_v4(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[4]; + + if (alps_enter_command_mode(psmouse)) + goto error; + + if (alps_absolute_mode_v4(psmouse)) { + psmouse_err(psmouse, "Failed to enter absolute mode\n"); + goto error; + } + + if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) + goto error; + + alps_exit_command_mode(psmouse); + + /* + * This sequence changes the output from a 9-byte to an + * 8-byte format. All the same data seems to be present, + * just in a more compact format. + */ + param[0] = 0xc8; + param[1] = 0x64; + param[2] = 0x50; + if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) + return -1; + + /* Set rate and enable data reporting */ + param[0] = 0x64; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { + psmouse_err(psmouse, "Failed to enable data reporting\n"); + return -1; + } + + return 0; + +error: + /* + * Leaving the touchpad in command mode will essentially render + * it unusable until the machine reboots, so exit it here just + * to be safe + */ + alps_exit_command_mode(psmouse); + return -1; +} + +static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, + unsigned char index, unsigned char otp[]) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + switch (index) { + case 0: + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) + return -1; + + break; + + case 1: + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) + return -1; + + break; + } + + return 0; +} + +static int alps_update_device_area_ss4_v2(unsigned char otp[][4], + struct alps_data *priv) +{ + int num_x_electrode; + int num_y_electrode; + int x_pitch, y_pitch, x_phys, y_phys; + + num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); + num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); + + priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; + priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; + + x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; + y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; + + x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ + y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ + + priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ + priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ + + return 0; +} + +static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], + struct alps_data *priv) +{ + unsigned char is_btnless; + + is_btnless = (otp[1][1] >> 3) & 0x01; + + if (is_btnless) + priv->flags |= ALPS_BUTTONPAD; + + return 0; +} + +static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, + struct alps_data *priv) +{ + unsigned char otp[2][4]; + + memset(otp, 0, sizeof(otp)); + + if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || + alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) + return -1; + + alps_update_device_area_ss4_v2(otp, priv); + + alps_update_btn_info_ss4_v2(otp, priv); + + return 0; +} + +static int alps_dolphin_get_device_area(struct psmouse *psmouse, + struct alps_data *priv) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[4] = {0}; + int num_x_electrode, num_y_electrode; + + if (alps_enter_command_mode(psmouse)) + return -1; + + param[0] = 0x0a; + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) + return -1; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) + return -1; + + /* + * Dolphin's sensor line number is not fixed. It can be calculated + * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. + * Further more, we can get device's x_max and y_max by multiplying + * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. + * + * e.g. When we get register's sensor_x = 11 & sensor_y = 8, + * real sensor line number X = 11 + 8 = 19, and + * real sensor line number Y = 8 + 1 = 9. + * So, x_max = (19 - 1) * 64 = 1152, and + * y_max = (9 - 1) * 64 = 512. + */ + num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); + num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); + priv->x_bits = num_x_electrode; + priv->y_bits = num_y_electrode; + priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; + priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; + + if (alps_exit_command_mode(psmouse)) + return -1; + + return 0; +} + +static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[2]; + + /* This is dolphin "v1" as empirically defined by florin9doi */ + param[0] = 0x64; + param[1] = 0x28; + + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) + return -1; + + return 0; +} + +static int alps_hw_init_v7(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + int reg_val, ret = -1; + + if (alps_enter_command_mode(psmouse) || + alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) + goto error; + + if (alps_get_v3_v7_resolution(psmouse, 0xc397)) + goto error; + + if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) + goto error; + + reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); + if (reg_val == -1) + goto error; + if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) + goto error; + + alps_exit_command_mode(psmouse); + return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); + +error: + alps_exit_command_mode(psmouse); + return ret; +} + +static int alps_hw_init_ss4_v2(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + char param[2] = {0x64, 0x28}; + int ret = -1; + + /* enter absolute mode */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { + goto error; + } + + /* T.B.D. Decread noise packet number, delete in the future */ + if (alps_exit_command_mode(psmouse) || + alps_enter_command_mode(psmouse) || + alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { + goto error; + } + alps_exit_command_mode(psmouse); + + return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); + +error: + alps_exit_command_mode(psmouse); + return ret; +} + +static int alps_set_protocol(struct psmouse *psmouse, + struct alps_data *priv, + const struct alps_protocol_info *protocol) +{ + psmouse->private = priv; + + setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); + + priv->proto_version = protocol->version; + priv->byte0 = protocol->byte0; + priv->mask0 = protocol->mask0; + priv->flags = protocol->flags; + + priv->x_max = 2000; + priv->y_max = 1400; + priv->x_bits = 15; + priv->y_bits = 11; + + switch (priv->proto_version) { + case ALPS_PROTO_V1: + case ALPS_PROTO_V2: + priv->hw_init = alps_hw_init_v1_v2; + priv->process_packet = alps_process_packet_v1_v2; + priv->set_abs_params = alps_set_abs_params_st; + priv->x_max = 1023; + priv->y_max = 767; + break; + + case ALPS_PROTO_V3: + priv->hw_init = alps_hw_init_v3; + priv->process_packet = alps_process_packet_v3; + priv->set_abs_params = alps_set_abs_params_mt; + priv->decode_fields = alps_decode_pinnacle; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + break; + + case ALPS_PROTO_V3_RUSHMORE: + priv->hw_init = alps_hw_init_rushmore_v3; + priv->process_packet = alps_process_packet_v3; + priv->set_abs_params = alps_set_abs_params_mt; + priv->decode_fields = alps_decode_rushmore; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + priv->x_bits = 16; + priv->y_bits = 12; + + if (alps_probe_trackstick_v3(psmouse, + ALPS_REG_BASE_RUSHMORE) < 0) + priv->flags &= ~ALPS_DUALPOINT; + + break; + + case ALPS_PROTO_V4: + priv->hw_init = alps_hw_init_v4; + priv->process_packet = alps_process_packet_v4; + priv->set_abs_params = alps_set_abs_params_mt; + priv->nibble_commands = alps_v4_nibble_commands; + priv->addr_command = PSMOUSE_CMD_DISABLE; + break; + + case ALPS_PROTO_V5: + priv->hw_init = alps_hw_init_dolphin_v1; + priv->process_packet = alps_process_touchpad_packet_v3_v5; + priv->decode_fields = alps_decode_dolphin; + priv->set_abs_params = alps_set_abs_params_mt; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + priv->x_bits = 23; + priv->y_bits = 12; + + if (alps_dolphin_get_device_area(psmouse, priv)) + return -EIO; + + break; + + case ALPS_PROTO_V6: + priv->hw_init = alps_hw_init_v6; + priv->process_packet = alps_process_packet_v6; + priv->set_abs_params = alps_set_abs_params_st; + priv->nibble_commands = alps_v6_nibble_commands; + priv->x_max = 2047; + priv->y_max = 1535; + break; + + case ALPS_PROTO_V7: + priv->hw_init = alps_hw_init_v7; + priv->process_packet = alps_process_packet_v7; + priv->decode_fields = alps_decode_packet_v7; + priv->set_abs_params = alps_set_abs_params_v7; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + priv->x_max = 0xfff; + priv->y_max = 0x7ff; + + if (priv->fw_ver[1] != 0xba) + priv->flags |= ALPS_BUTTONPAD; + + break; + + case ALPS_PROTO_V8: + priv->hw_init = alps_hw_init_ss4_v2; + priv->process_packet = alps_process_packet_ss4_v2; + priv->decode_fields = alps_decode_ss4_v2; + priv->set_abs_params = alps_set_abs_params_ss4_v2; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + + if (alps_set_defaults_ss4_v2(psmouse, priv)) + return -EIO; + + break; + } + + return 0; +} + +static const struct alps_protocol_info *alps_match_table(unsigned char *e7, + unsigned char *ec) +{ + const struct alps_model_info *model; + int i; + + for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { + model = &alps_model_data[i]; + + if (!memcmp(e7, model->signature, sizeof(model->signature)) && + (!model->command_mode_resp || + model->command_mode_resp == ec[2])) { + + return &model->protocol_info; + } + } + + return NULL; +} + +static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) +{ + const struct alps_protocol_info *protocol; + unsigned char e6[4], e7[4], ec[4]; + int error; + + /* + * First try "E6 report". + * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. + * The bits 0-2 of the first byte will be 1s if some buttons are + * pressed. + */ + if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, + PSMOUSE_CMD_SETSCALE11, e6)) + return -EIO; + + if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) + return -EINVAL; + + /* + * Now get the "E7" and "EC" reports. These will uniquely identify + * most ALPS touchpads. + */ + if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, + PSMOUSE_CMD_SETSCALE21, e7) || + alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, + PSMOUSE_CMD_RESET_WRAP, ec) || + alps_exit_command_mode(psmouse)) + return -EIO; + + protocol = alps_match_table(e7, ec); + if (!protocol) { + if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && + ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { + protocol = &alps_v5_protocol_data; + } else if (ec[0] == 0x88 && + ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { + protocol = &alps_v7_protocol_data; + } else if (ec[0] == 0x88 && ec[1] == 0x08) { + protocol = &alps_v3_rushmore_data; + } else if (ec[0] == 0x88 && ec[1] == 0x07 && + ec[2] >= 0x90 && ec[2] <= 0x9d) { + protocol = &alps_v3_protocol_data; + } else if (e7[0] == 0x73 && e7[1] == 0x03 && + e7[2] == 0x14 && ec[1] == 0x02) { + protocol = &alps_v8_protocol_data; + } else { + psmouse_dbg(psmouse, + "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); + return -EINVAL; + } + } + + if (priv) { + /* Save the Firmware version */ + memcpy(priv->fw_ver, ec, 3); + error = alps_set_protocol(psmouse, priv, protocol); + if (error) + return error; + } + + return 0; +} + +static int alps_reconnect(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + + psmouse_reset(psmouse); + + if (alps_identify(psmouse, priv) < 0) + return -1; + + return priv->hw_init(psmouse); +} + +static void alps_disconnect(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + + psmouse_reset(psmouse); + del_timer_sync(&priv->timer); + if (priv->dev2) + input_unregister_device(priv->dev2); + if (!IS_ERR_OR_NULL(priv->dev3)) + input_unregister_device(priv->dev3); + kfree(priv); +} + +static void alps_set_abs_params_st(struct alps_data *priv, + struct input_dev *dev1) +{ + input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0); + input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0); + input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); +} + +static void alps_set_abs_params_mt_common(struct alps_data *priv, + struct input_dev *dev1) +{ + input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); + input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); + + input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); + input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); + + set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); + set_bit(BTN_TOOL_QUADTAP, dev1->keybit); +} + +static void alps_set_abs_params_mt(struct alps_data *priv, + struct input_dev *dev1) +{ + alps_set_abs_params_mt_common(priv, dev1); + input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); + + input_mt_init_slots(dev1, MAX_TOUCHES, + INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | + INPUT_MT_TRACK | INPUT_MT_SEMI_MT); +} + +static void alps_set_abs_params_v7(struct alps_data *priv, + struct input_dev *dev1) +{ + alps_set_abs_params_mt_common(priv, dev1); + set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); + + input_mt_init_slots(dev1, MAX_TOUCHES, + INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | + INPUT_MT_TRACK); + + set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); +} + +static void alps_set_abs_params_ss4_v2(struct alps_data *priv, + struct input_dev *dev1) +{ + alps_set_abs_params_mt_common(priv, dev1); + input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); + set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); + + input_mt_init_slots(dev1, MAX_TOUCHES, + INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | + INPUT_MT_TRACK); +} + +int alps_init(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + struct input_dev *dev1 = psmouse->dev; + int error; + + error = priv->hw_init(psmouse); + if (error) + goto init_fail; + + /* + * Undo part of setup done for us by psmouse core since touchpad + * is not a relative device. + */ + __clear_bit(EV_REL, dev1->evbit); + __clear_bit(REL_X, dev1->relbit); + __clear_bit(REL_Y, dev1->relbit); + + /* + * Now set up our capabilities. + */ + dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); + dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); + dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); + dev1->keybit[BIT_WORD(BTN_LEFT)] |= + BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); + + dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); + + priv->set_abs_params(priv, dev1); + + if (priv->flags & ALPS_WHEEL) { + dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); + dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); + } + + if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { + dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); + dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); + } + + if (priv->flags & ALPS_FOUR_BUTTONS) { + dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); + dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); + dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); + dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); + } else if (priv->flags & ALPS_BUTTONPAD) { + set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); + clear_bit(BTN_RIGHT, dev1->keybit); + } else { + dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); + } + + if (priv->flags & ALPS_DUALPOINT) { + struct input_dev *dev2; + + dev2 = input_allocate_device(); + if (!dev2) { + psmouse_err(psmouse, + "failed to allocate trackstick device\n"); + error = -ENOMEM; + goto init_fail; + } + + snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", + psmouse->ps2dev.serio->phys); + dev2->phys = priv->phys2; + + /* + * format of input device name is: "protocol vendor name" + * see function psmouse_switch_protocol() in psmouse-base.c + */ + dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; + + dev2->id.bustype = BUS_I8042; + dev2->id.vendor = 0x0002; + dev2->id.product = PSMOUSE_ALPS; + dev2->id.version = priv->proto_version; + dev2->dev.parent = &psmouse->ps2dev.serio->dev; + + input_set_capability(dev2, EV_REL, REL_X); + input_set_capability(dev2, EV_REL, REL_Y); + input_set_capability(dev2, EV_KEY, BTN_LEFT); + input_set_capability(dev2, EV_KEY, BTN_RIGHT); + input_set_capability(dev2, EV_KEY, BTN_MIDDLE); + + __set_bit(INPUT_PROP_POINTER, dev2->propbit); + __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); + + error = input_register_device(dev2); + if (error) { + psmouse_err(psmouse, + "failed to register trackstick device: %d\n", + error); + input_free_device(dev2); + goto init_fail; + } + + priv->dev2 = dev2; + } + + priv->psmouse = psmouse; + + INIT_DELAYED_WORK(&priv->dev3_register_work, + alps_register_bare_ps2_mouse); + + psmouse->protocol_handler = alps_process_byte; + psmouse->poll = alps_poll; + psmouse->disconnect = alps_disconnect; + psmouse->reconnect = alps_reconnect; + psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; + + /* We are having trouble resyncing ALPS touchpads so disable it for now */ + psmouse->resync_time = 0; + + /* Allow 2 invalid packets without resetting device */ + psmouse->resetafter = psmouse->pktsize * 2; + + return 0; + +init_fail: + psmouse_reset(psmouse); + /* + * Even though we did not allocate psmouse->private we do free + * it here. + */ + kfree(psmouse->private); + psmouse->private = NULL; + return error; +} + +int alps_detect(struct psmouse *psmouse, bool set_properties) +{ + struct alps_data *priv; + int error; + + error = alps_identify(psmouse, NULL); + if (error) + return error; + + /* + * Reset the device to make sure it is fully operational: + * on some laptops, like certain Dell Latitudes, we may + * fail to properly detect presence of trackstick if device + * has not been reset. + */ + psmouse_reset(psmouse); + + priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + error = alps_identify(psmouse, priv); + if (error) { + kfree(priv); + return error; + } + + if (set_properties) { + psmouse->vendor = "ALPS"; + psmouse->name = priv->flags & ALPS_DUALPOINT ? + "DualPoint TouchPad" : "GlidePoint"; + psmouse->model = priv->proto_version; + } else { + /* + * Destroy alps_data structure we allocated earlier since + * this was just a "trial run". Otherwise we'll keep it + * to be used by alps_init() which has to be called if + * we succeed and set_properties is true. + */ + kfree(priv); + psmouse->private = NULL; + } + + return 0; +} + |