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path: root/drivers/input/mouse/alps.c
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Diffstat (limited to 'drivers/input/mouse/alps.c')
-rw-r--r--drivers/input/mouse/alps.c1649
1 files changed, 1649 insertions, 0 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
new file mode 100644
index 00000000..4c6a72d3
--- /dev/null
+++ b/drivers/input/mouse/alps.c
@@ -0,0 +1,1649 @@
+/*
+ * 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_V3_X_MAX 2000
+#define ALPS_V3_Y_MAX 1400
+
+#define ALPS_BITMAP_X_BITS 15
+#define ALPS_BITMAP_Y_BITS 11
+
+#define ALPS_CMD_NIBBLE_10 0x01f2
+
+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 */
+};
+
+
+#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 */
+
+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 */
+ { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
+ { { 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, 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 }, 0x9b, ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT },
+ { { 0x73, 0x02, 0x64 }, 0x9d, ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT },
+ { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
+};
+
+/*
+ * 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.
+ */
+
+/* Packet formats are described in Documentation/input/alps.txt */
+
+static bool alps_is_valid_first_byte(const struct alps_model_info *model,
+ unsigned char data)
+{
+ return (data & model->mask0) == model->byte0;
+}
+
+static void alps_report_buttons(struct psmouse *psmouse,
+ 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 = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
+ input_report_key(dev, BTN_LEFT, left);
+
+ dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
+ input_report_key(dev, BTN_RIGHT, right);
+
+ dev = 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.
+ */
+ input_sync(dev2);
+}
+
+static void alps_process_packet_v1_v2(struct psmouse *psmouse)
+{
+ struct alps_data *priv = psmouse->private;
+ const struct alps_model_info *model = priv->i;
+ 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 (model->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 (model->flags & ALPS_FW_BK_1) {
+ back = packet[0] & 0x10;
+ forward = packet[2] & 4;
+ }
+
+ if (model->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 ((model->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(psmouse, dev2, dev, left, right, middle);
+
+ input_sync(dev2);
+ return;
+ }
+
+ alps_report_buttons(psmouse, 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 (model->flags & ALPS_WHEEL)
+ input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
+
+ if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
+ input_report_key(dev, BTN_FORWARD, forward);
+ input_report_key(dev, BTN_BACK, back);
+ }
+
+ if (model->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 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 x1, y1, x2, and y2 when the return value
+ * is greater than 0.
+ */
+static int alps_process_bitmap(unsigned int x_map, unsigned int y_map,
+ int *x1, int *y1, int *x2, int *y2)
+{
+ struct alps_bitmap_point {
+ int start_bit;
+ int num_bits;
+ };
+
+ int fingers_x = 0, fingers_y = 0, fingers;
+ int i, bit, prev_bit;
+ struct alps_bitmap_point x_low = {0,}, x_high = {0,};
+ struct alps_bitmap_point y_low = {0,}, y_high = {0,};
+ struct alps_bitmap_point *point;
+
+ if (!x_map || !y_map)
+ return 0;
+
+ *x1 = *y1 = *x2 = *y2 = 0;
+
+ prev_bit = 0;
+ point = &x_low;
+ for (i = 0; x_map != 0; i++, x_map >>= 1) {
+ bit = x_map & 1;
+ if (bit) {
+ if (!prev_bit) {
+ point->start_bit = i;
+ fingers_x++;
+ }
+ point->num_bits++;
+ } else {
+ if (prev_bit)
+ point = &x_high;
+ else
+ point->num_bits = 0;
+ }
+ prev_bit = bit;
+ }
+
+ /*
+ * y bitmap is reversed for what we need (lower positions are in
+ * higher bits), so we process from the top end.
+ */
+ y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - ALPS_BITMAP_Y_BITS);
+ prev_bit = 0;
+ point = &y_low;
+ for (i = 0; y_map != 0; i++, y_map <<= 1) {
+ bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
+ if (bit) {
+ if (!prev_bit) {
+ point->start_bit = i;
+ fingers_y++;
+ }
+ point->num_bits++;
+ } else {
+ if (prev_bit)
+ point = &y_high;
+ else
+ point->num_bits = 0;
+ }
+ prev_bit = bit;
+ }
+
+ /*
+ * 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 total fingers is > 1 but either axis reports only a single
+ * contact, we have overlapping or adjacent fingers. For the
+ * purposes of creating a bounding box, divide the single contact
+ * (roughly) equally between the two points.
+ */
+ if (fingers > 1) {
+ if (fingers_x == 1) {
+ i = x_low.num_bits / 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);
+ } else if (fingers_y == 1) {
+ i = y_low.num_bits / 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);
+ }
+ }
+
+ *x1 = (ALPS_V3_X_MAX * (2 * x_low.start_bit + x_low.num_bits - 1)) /
+ (2 * (ALPS_BITMAP_X_BITS - 1));
+ *y1 = (ALPS_V3_Y_MAX * (2 * y_low.start_bit + y_low.num_bits - 1)) /
+ (2 * (ALPS_BITMAP_Y_BITS - 1));
+
+ if (fingers > 1) {
+ *x2 = (ALPS_V3_X_MAX * (2 * x_high.start_bit + x_high.num_bits - 1)) /
+ (2 * (ALPS_BITMAP_X_BITS - 1));
+ *y2 = (ALPS_V3_Y_MAX * (2 * y_high.start_bit + y_high.num_bits - 1)) /
+ (2 * (ALPS_BITMAP_Y_BITS - 1));
+ }
+
+ return fingers;
+}
+
+static void alps_set_slot(struct input_dev *dev, int slot, bool active,
+ int x, int y)
+{
+ input_mt_slot(dev, slot);
+ input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
+ if (active) {
+ input_report_abs(dev, ABS_MT_POSITION_X, x);
+ input_report_abs(dev, ABS_MT_POSITION_Y, y);
+ }
+}
+
+static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
+ int x1, int y1, int x2, int y2)
+{
+ alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
+ alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
+}
+
+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;
+
+ /* 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_process_touchpad_packet_v3(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;
+ int left, right, middle;
+ int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
+ int fingers = 0, bmap_fingers;
+ unsigned int x_bitmap, y_bitmap;
+
+ /*
+ * 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 (packet[0] & 0x40) {
+ fingers = (packet[5] & 0x3) + 1;
+ x_bitmap = ((packet[4] & 0x7e) << 8) |
+ ((packet[1] & 0x7f) << 2) |
+ ((packet[0] & 0x30) >> 4);
+ y_bitmap = ((packet[3] & 0x70) << 4) |
+ ((packet[2] & 0x7f) << 1) |
+ (packet[4] & 0x01);
+
+ bmap_fingers = alps_process_bitmap(x_bitmap, y_bitmap,
+ &x1, &y1, &x2, &y2);
+
+ /*
+ * We shouldn't report more than one finger if
+ * we don't have two coordinates.
+ */
+ if (fingers > 1 && bmap_fingers < 2)
+ fingers = bmap_fingers;
+
+ /* Now process position packet */
+ packet = priv->multi_data;
+ } 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 (packet[0] & 0x40)
+ return;
+
+ if (!priv->multi_packet && (packet[4] & 0x40)) {
+ priv->multi_packet = 1;
+ memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
+ return;
+ }
+
+ priv->multi_packet = 0;
+
+ left = packet[3] & 0x01;
+ right = packet[3] & 0x02;
+ middle = packet[3] & 0x04;
+
+ x = ((packet[1] & 0x7f) << 4) | ((packet[4] & 0x30) >> 2) |
+ ((packet[0] & 0x30) >> 4);
+ y = ((packet[2] & 0x7f) << 4) | (packet[4] & 0x0f);
+ z = packet[5] & 0x7f;
+
+ /*
+ * 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 (x && y && !z)
+ return;
+
+ /*
+ * If we don't have MT data or the bitmaps were empty, we have
+ * to rely on ST data.
+ */
+ if (!fingers) {
+ x1 = x;
+ y1 = y;
+ fingers = z > 0 ? 1 : 0;
+ }
+
+ if (z >= 64)
+ input_report_key(dev, BTN_TOUCH, 1);
+ else
+ input_report_key(dev, BTN_TOUCH, 0);
+
+ alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
+
+ input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
+ input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
+ input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
+ input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);
+
+ input_report_key(dev, BTN_LEFT, left);
+ input_report_key(dev, BTN_RIGHT, right);
+ input_report_key(dev, BTN_MIDDLE, middle);
+
+ 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_sync(dev);
+
+ if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
+ left = packet[3] & 0x10;
+ right = packet[3] & 0x20;
+ middle = packet[3] & 0x40;
+
+ 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_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(psmouse);
+}
+
+static void alps_process_packet_v4(struct psmouse *psmouse)
+{
+ unsigned char *packet = psmouse->packet;
+ struct input_dev *dev = psmouse->dev;
+ int x, y, z;
+ int left, right;
+
+ left = packet[4] & 0x01;
+ right = packet[4] & 0x02;
+
+ x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
+ ((packet[0] & 0x30) >> 4);
+ y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
+ z = packet[5] & 0x7f;
+
+ if (z >= 64)
+ input_report_key(dev, BTN_TOUCH, 1);
+ else
+ 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);
+ input_report_key(dev, BTN_LEFT, left);
+ input_report_key(dev, BTN_RIGHT, right);
+
+ input_sync(dev);
+}
+
+static void alps_process_packet(struct psmouse *psmouse)
+{
+ struct alps_data *priv = psmouse->private;
+ const struct alps_model_info *model = priv->i;
+
+ switch (model->proto_version) {
+ case ALPS_PROTO_V1:
+ case ALPS_PROTO_V2:
+ alps_process_packet_v1_v2(psmouse);
+ break;
+ case ALPS_PROTO_V3:
+ alps_process_packet_v3(psmouse);
+ break;
+ case ALPS_PROTO_V4:
+ alps_process_packet_v4(psmouse);
+ break;
+ }
+}
+
+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 *dev2 = priv->dev2;
+
+ if (report_buttons)
+ alps_report_buttons(psmouse, dev2, psmouse->dev,
+ packet[0] & 1, packet[0] & 2, packet[0] & 4);
+
+ input_report_rel(dev2, REL_X,
+ packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
+ input_report_rel(dev2, REL_Y,
+ packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
+
+ input_sync(dev2);
+}
+
+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->i, psmouse->packet[6]))) {
+ psmouse_dbg(psmouse,
+ "refusing packet %x %x %x %x (suspected interleaved ps/2)\n",
+ psmouse->packet[3], psmouse->packet[4],
+ psmouse->packet[5], psmouse->packet[6]);
+ return PSMOUSE_BAD_DATA;
+ }
+
+ alps_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;
+
+ 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 %x %x %x (suspected interleaved ps/2)\n",
+ psmouse->packet[3], psmouse->packet[4],
+ psmouse->packet[5]);
+ } else {
+ alps_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;
+ const struct alps_model_info *model = priv->i;
+
+ if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
+ 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 ((model->flags & ALPS_PS2_INTERLEAVED) &&
+ psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
+ return alps_handle_interleaved_ps2(psmouse);
+ }
+
+ if (!alps_is_valid_first_byte(model, psmouse->packet[0])) {
+ psmouse_dbg(psmouse,
+ "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
+ psmouse->packet[0], model->mask0, model->byte0);
+ return PSMOUSE_BAD_DATA;
+ }
+
+ /* Bytes 2 - pktsize should have 0 in the highest bit */
+ if (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]);
+ return PSMOUSE_BAD_DATA;
+ }
+
+ if (psmouse->pktcnt == psmouse->pktsize) {
+ alps_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_enter_command_mode(struct psmouse *psmouse,
+ unsigned char *resp)
+{
+ unsigned char param[4];
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
+ ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
+ psmouse_err(psmouse, "failed to enter command mode\n");
+ return -1;
+ }
+
+ if (param[0] != 0x88 && param[1] != 0x07) {
+ psmouse_dbg(psmouse,
+ "unknown response while entering command mode: %2.2x %2.2x %2.2x\n",
+ param[0], param[1], param[2]);
+ return -1;
+ }
+
+ if (resp)
+ *resp = param[2];
+ 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;
+}
+
+static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
+ unsigned char param[4];
+ const struct alps_model_info *model = NULL;
+ int i;
+
+ /*
+ * 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.
+ */
+ param[0] = 0;
+ if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
+ return NULL;
+
+ param[0] = param[1] = param[2] = 0xff;
+ if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
+ return NULL;
+
+ psmouse_dbg(psmouse, "E6 report: %2.2x %2.2x %2.2x",
+ param[0], param[1], param[2]);
+
+ if ((param[0] & 0xf8) != 0 || param[1] != 0 ||
+ (param[2] != 10 && param[2] != 100))
+ return NULL;
+
+ /*
+ * Now try "E7 report". Allowed responses are in
+ * alps_model_data[].signature
+ */
+ param[0] = 0;
+ if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21))
+ return NULL;
+
+ param[0] = param[1] = param[2] = 0xff;
+ if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
+ return NULL;
+
+ psmouse_dbg(psmouse, "E7 report: %2.2x %2.2x %2.2x",
+ param[0], param[1], param[2]);
+
+ if (version) {
+ for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++)
+ /* empty */;
+ *version = (param[0] << 8) | (param[1] << 4) | i;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
+ if (!memcmp(param, alps_model_data[i].signature,
+ sizeof(alps_model_data[i].signature))) {
+ model = alps_model_data + i;
+ break;
+ }
+ }
+
+ if (model && model->proto_version > ALPS_PROTO_V2) {
+ /*
+ * Need to check command mode response to identify
+ * model
+ */
+ model = NULL;
+ if (alps_enter_command_mode(psmouse, param)) {
+ psmouse_warn(psmouse,
+ "touchpad failed to enter command mode\n");
+ } else {
+ for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
+ if (alps_model_data[i].proto_version > ALPS_PROTO_V2 &&
+ alps_model_data[i].command_mode_resp == param[0]) {
+ model = alps_model_data + i;
+ break;
+ }
+ }
+ alps_exit_command_mode(psmouse);
+
+ if (!model)
+ psmouse_dbg(psmouse,
+ "Unknown command mode response %2.2x\n",
+ param[0]);
+ }
+ }
+
+ return model;
+}
+
+/*
+ * 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_get_status(struct psmouse *psmouse, char *param)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+
+ /* Get status: 0xF5 0xF5 0xF5 0xE9 */
+ 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, param, PSMOUSE_CMD_GETINFO))
+ return -1;
+
+ psmouse_dbg(psmouse, "Status: %2.2x %2.2x %2.2x",
+ param[0], param[1], param[2]);
+
+ 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->i->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->i->flags & ALPS_PASS)
+ alps_passthrough_mode_v2(psmouse, false);
+
+ if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->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;
+ const struct alps_model_info *model = priv->i;
+
+ if ((model->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 ((model->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;
+}
+
+/*
+ * Enable or disable passthrough mode to the trackstick. Must be in
+ * command mode when calling this function.
+ */
+static int alps_passthrough_mode_v3(struct psmouse *psmouse, bool enable)
+{
+ int reg_val;
+
+ reg_val = alps_command_mode_read_reg(psmouse, 0x0008);
+ if (reg_val == -1)
+ return -1;
+
+ if (enable)
+ reg_val |= 0x01;
+ else
+ reg_val &= ~0x01;
+
+ if (__alps_command_mode_write_reg(psmouse, reg_val))
+ return -1;
+
+ return 0;
+}
+
+/* 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_hw_init_v3(struct psmouse *psmouse)
+{
+ struct alps_data *priv = psmouse->private;
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ int reg_val;
+ unsigned char param[4];
+
+ priv->nibble_commands = alps_v3_nibble_commands;
+ priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
+
+ if (alps_enter_command_mode(psmouse, NULL))
+ goto error;
+
+ /* Check for trackstick */
+ reg_val = alps_command_mode_read_reg(psmouse, 0x0008);
+ if (reg_val == -1)
+ goto error;
+ if (reg_val & 0x80) {
+ if (alps_passthrough_mode_v3(psmouse, true))
+ goto error;
+ if (alps_exit_command_mode(psmouse))
+ goto error;
+
+ /*
+ * 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.
+ */
+ param[0] = 0x64;
+ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
+ ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
+ psmouse_warn(psmouse, "trackstick E7 report failed\n");
+ } else {
+ psmouse_dbg(psmouse,
+ "trackstick E7 report: %2.2x %2.2x %2.2x\n",
+ param[0], param[1], param[2]);
+
+ /*
+ * 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");
+ goto error_passthrough;
+ }
+ }
+
+ if (alps_enter_command_mode(psmouse, NULL))
+ goto error_passthrough;
+ if (alps_passthrough_mode_v3(psmouse, false))
+ goto error;
+ }
+
+ if (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;
+
+ /*
+ * 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_command_mode_write_reg(psmouse, 0x0008, 0x82))
+ 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_passthrough:
+ /* Something failed while in passthrough mode, so try to get out */
+ if (!alps_enter_command_mode(psmouse, NULL))
+ alps_passthrough_mode_v3(psmouse, false);
+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;
+}
+
+/* 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 alps_data *priv = psmouse->private;
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char param[4];
+
+ priv->nibble_commands = alps_v4_nibble_commands;
+ priv->addr_command = PSMOUSE_CMD_DISABLE;
+
+ if (alps_enter_command_mode(psmouse, NULL))
+ 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, &param[0], PSMOUSE_CMD_SETRATE) ||
+ ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
+ ps2_command(ps2dev, &param[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_hw_init(struct psmouse *psmouse)
+{
+ struct alps_data *priv = psmouse->private;
+ const struct alps_model_info *model = priv->i;
+ int ret = -1;
+
+ switch (model->proto_version) {
+ case ALPS_PROTO_V1:
+ case ALPS_PROTO_V2:
+ ret = alps_hw_init_v1_v2(psmouse);
+ break;
+ case ALPS_PROTO_V3:
+ ret = alps_hw_init_v3(psmouse);
+ break;
+ case ALPS_PROTO_V4:
+ ret = alps_hw_init_v4(psmouse);
+ break;
+ }
+
+ return ret;
+}
+
+static int alps_reconnect(struct psmouse *psmouse)
+{
+ const struct alps_model_info *model;
+
+ psmouse_reset(psmouse);
+
+ model = alps_get_model(psmouse, NULL);
+ if (!model)
+ return -1;
+
+ return alps_hw_init(psmouse);
+}
+
+static void alps_disconnect(struct psmouse *psmouse)
+{
+ struct alps_data *priv = psmouse->private;
+
+ psmouse_reset(psmouse);
+ del_timer_sync(&priv->timer);
+ input_unregister_device(priv->dev2);
+ kfree(priv);
+}
+
+int alps_init(struct psmouse *psmouse)
+{
+ struct alps_data *priv;
+ const struct alps_model_info *model;
+ struct input_dev *dev1 = psmouse->dev, *dev2;
+ int version;
+
+ priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
+ dev2 = input_allocate_device();
+ if (!priv || !dev2)
+ goto init_fail;
+
+ priv->dev2 = dev2;
+ setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
+
+ psmouse->private = priv;
+
+ psmouse_reset(psmouse);
+
+ model = alps_get_model(psmouse, &version);
+ if (!model)
+ goto init_fail;
+
+ priv->i = model;
+
+ if (alps_hw_init(psmouse))
+ 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);
+
+ switch (model->proto_version) {
+ case ALPS_PROTO_V1:
+ case ALPS_PROTO_V2:
+ input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
+ input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
+ break;
+ case ALPS_PROTO_V3:
+ set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
+ input_mt_init_slots(dev1, 2);
+ input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0);
+ input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0);
+
+ set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
+ set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
+ set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
+ /* fall through */
+ case ALPS_PROTO_V4:
+ input_set_abs_params(dev1, ABS_X, 0, ALPS_V3_X_MAX, 0, 0);
+ input_set_abs_params(dev1, ABS_Y, 0, ALPS_V3_Y_MAX, 0, 0);
+ break;
+ }
+
+ input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
+
+ if (model->flags & ALPS_WHEEL) {
+ dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
+ dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
+ }
+
+ if (model->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 (model->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 {
+ dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
+ }
+
+ snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
+ dev2->phys = priv->phys;
+ dev2->name = (model->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse";
+ dev2->id.bustype = BUS_I8042;
+ dev2->id.vendor = 0x0002;
+ dev2->id.product = PSMOUSE_ALPS;
+ dev2->id.version = 0x0000;
+ dev2->dev.parent = &psmouse->ps2dev.serio->dev;
+
+ dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+ dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+ dev2->keybit[BIT_WORD(BTN_LEFT)] =
+ BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
+
+ if (input_register_device(priv->dev2))
+ goto init_fail;
+
+ psmouse->protocol_handler = alps_process_byte;
+ psmouse->poll = alps_poll;
+ psmouse->disconnect = alps_disconnect;
+ psmouse->reconnect = alps_reconnect;
+ psmouse->pktsize = model->proto_version == ALPS_PROTO_V4 ? 8 : 6;
+
+ /* We are having trouble resyncing ALPS touchpads so disable it for now */
+ psmouse->resync_time = 0;
+
+ return 0;
+
+init_fail:
+ psmouse_reset(psmouse);
+ input_free_device(dev2);
+ kfree(priv);
+ psmouse->private = NULL;
+ return -1;
+}
+
+int alps_detect(struct psmouse *psmouse, bool set_properties)
+{
+ int version;
+ const struct alps_model_info *model;
+
+ model = alps_get_model(psmouse, &version);
+ if (!model)
+ return -1;
+
+ if (set_properties) {
+ psmouse->vendor = "ALPS";
+ psmouse->name = model->flags & ALPS_DUALPOINT ?
+ "DualPoint TouchPad" : "GlidePoint";
+ psmouse->model = version;
+ }
+ return 0;
+}
+
generated by cgit (git 2.34.1) at 2025-01-13 09:37:43 +0000