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@@ -3,6 +3,7 @@
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*
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* Copyright (c) 2008 Jaya Kumar
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* Copyright (c) 2010 Red Hat, Inc.
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+ * Copyright (c) 2010 - 2011 Ping Cheng, Wacom. <pingc@wacom.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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@@ -64,11 +65,11 @@ struct w8001_coord {
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/* touch query reply packet */
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struct w8001_touch_query {
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+ u16 x;
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+ u16 y;
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u8 panel_res;
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u8 capacity_res;
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u8 sensor_id;
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- u16 x;
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- u16 y;
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};
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/*
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@@ -87,9 +88,14 @@ struct w8001 {
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char phys[32];
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int type;
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unsigned int pktlen;
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+ u16 max_touch_x;
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+ u16 max_touch_y;
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+ u16 max_pen_x;
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+ u16 max_pen_y;
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+ char name[64];
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};
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-static void parse_data(u8 *data, struct w8001_coord *coord)
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+static void parse_pen_data(u8 *data, struct w8001_coord *coord)
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{
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memset(coord, 0, sizeof(*coord));
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@@ -113,11 +119,30 @@ static void parse_data(u8 *data, struct w8001_coord *coord)
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coord->tilt_y = data[8] & 0x7F;
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}
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-static void parse_touch(struct w8001 *w8001)
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+static void parse_single_touch(u8 *data, struct w8001_coord *coord)
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+{
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+ coord->x = (data[1] << 7) | data[2];
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+ coord->y = (data[3] << 7) | data[4];
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+ coord->tsw = data[0] & 0x01;
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+}
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+
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+static void scale_touch_coordinates(struct w8001 *w8001,
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+ unsigned int *x, unsigned int *y)
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+{
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+ if (w8001->max_pen_x && w8001->max_touch_x)
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+ *x = *x * w8001->max_pen_x / w8001->max_touch_x;
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+
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+ if (w8001->max_pen_y && w8001->max_touch_y)
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+ *y = *y * w8001->max_pen_y / w8001->max_touch_y;
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+}
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+
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+static void parse_multi_touch(struct w8001 *w8001)
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{
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struct input_dev *dev = w8001->dev;
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unsigned char *data = w8001->data;
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+ unsigned int x, y;
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int i;
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+ int count = 0;
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for (i = 0; i < 2; i++) {
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bool touch = data[0] & (1 << i);
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@@ -125,15 +150,29 @@ static void parse_touch(struct w8001 *w8001)
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input_mt_slot(dev, i);
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input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch);
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if (touch) {
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- int x = (data[6 * i + 1] << 7) | (data[6 * i + 2]);
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- int y = (data[6 * i + 3] << 7) | (data[6 * i + 4]);
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+ x = (data[6 * i + 1] << 7) | data[6 * i + 2];
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+ y = (data[6 * i + 3] << 7) | data[6 * i + 4];
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/* data[5,6] and [11,12] is finger capacity */
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+ /* scale to pen maximum */
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+ scale_touch_coordinates(w8001, &x, &y);
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+
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input_report_abs(dev, ABS_MT_POSITION_X, x);
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input_report_abs(dev, ABS_MT_POSITION_Y, y);
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+ count++;
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}
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}
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+ /* emulate single touch events when stylus is out of proximity.
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+ * This is to make single touch backward support consistent
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+ * across all Wacom single touch devices.
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+ */
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+ if (w8001->type != BTN_TOOL_PEN &&
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+ w8001->type != BTN_TOOL_RUBBER) {
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+ w8001->type = count == 1 ? BTN_TOOL_FINGER : KEY_RESERVED;
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+ input_mt_report_pointer_emulation(dev, true);
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+ }
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+
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input_sync(dev);
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}
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@@ -152,6 +191,15 @@ static void parse_touchquery(u8 *data, struct w8001_touch_query *query)
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query->y = data[5] << 9;
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query->y |= data[6] << 2;
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query->y |= (data[2] >> 3) & 0x3;
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+
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+ /* Early days' single-finger touch models need the following defaults */
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+ if (!query->x && !query->y) {
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+ query->x = 1024;
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+ query->y = 1024;
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+ if (query->panel_res)
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+ query->x = query->y = (1 << query->panel_res);
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+ query->panel_res = 10;
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+ }
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}
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static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord)
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@@ -161,16 +209,15 @@ static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord)
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/*
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* We have 1 bit for proximity (rdy) and 3 bits for tip, side,
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* side2/eraser. If rdy && f2 are set, this can be either pen + side2,
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- * or eraser. assume
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+ * or eraser. Assume:
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* - if dev is already in proximity and f2 is toggled → pen + side2
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* - if dev comes into proximity with f2 set → eraser
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* If f2 disappears after assuming eraser, fake proximity out for
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* eraser and in for pen.
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*/
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- if (!w8001->type) {
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- w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
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- } else if (w8001->type == BTN_TOOL_RUBBER) {
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+ switch (w8001->type) {
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+ case BTN_TOOL_RUBBER:
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if (!coord->f2) {
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input_report_abs(dev, ABS_PRESSURE, 0);
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input_report_key(dev, BTN_TOUCH, 0);
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@@ -180,8 +227,21 @@ static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord)
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input_sync(dev);
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w8001->type = BTN_TOOL_PEN;
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}
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- } else {
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+ break;
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+
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+ case BTN_TOOL_FINGER:
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+ input_report_key(dev, BTN_TOUCH, 0);
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+ input_report_key(dev, BTN_TOOL_FINGER, 0);
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+ input_sync(dev);
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+ /* fall through */
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+
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+ case KEY_RESERVED:
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+ w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
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+ break;
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+
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+ default:
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input_report_key(dev, BTN_STYLUS2, coord->f2);
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+ break;
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}
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input_report_abs(dev, ABS_X, coord->x);
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@@ -193,7 +253,26 @@ static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord)
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input_sync(dev);
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if (!coord->rdy)
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- w8001->type = 0;
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+ w8001->type = KEY_RESERVED;
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+}
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+
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+static void report_single_touch(struct w8001 *w8001, struct w8001_coord *coord)
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+{
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+ struct input_dev *dev = w8001->dev;
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+ unsigned int x = coord->x;
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+ unsigned int y = coord->y;
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+
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+ /* scale to pen maximum */
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+ scale_touch_coordinates(w8001, &x, &y);
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+
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+ input_report_abs(dev, ABS_X, x);
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+ input_report_abs(dev, ABS_Y, y);
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+ input_report_key(dev, BTN_TOUCH, coord->tsw);
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+ input_report_key(dev, BTN_TOOL_FINGER, coord->tsw);
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+
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+ input_sync(dev);
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+
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+ w8001->type = coord->tsw ? BTN_TOOL_FINGER : KEY_RESERVED;
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}
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static irqreturn_t w8001_interrupt(struct serio *serio,
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@@ -214,9 +293,18 @@ static irqreturn_t w8001_interrupt(struct serio *serio,
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case W8001_PKTLEN_TOUCH93 - 1:
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case W8001_PKTLEN_TOUCH9A - 1:
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- /* ignore one-finger touch packet. */
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- if (w8001->pktlen == w8001->idx)
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+ tmp = w8001->data[0] & W8001_TOUCH_BYTE;
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+ if (tmp != W8001_TOUCH_BYTE)
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+ break;
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+
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+ if (w8001->pktlen == w8001->idx) {
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w8001->idx = 0;
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+ if (w8001->type != BTN_TOOL_PEN &&
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+ w8001->type != BTN_TOOL_RUBBER) {
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+ parse_single_touch(w8001->data, &coord);
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+ report_single_touch(w8001, &coord);
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+ }
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+ }
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break;
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/* Pen coordinates packet */
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@@ -225,18 +313,18 @@ static irqreturn_t w8001_interrupt(struct serio *serio,
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if (unlikely(tmp == W8001_TAB_BYTE))
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break;
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- tmp = (w8001->data[0] & W8001_TOUCH_BYTE);
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+ tmp = w8001->data[0] & W8001_TOUCH_BYTE;
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if (tmp == W8001_TOUCH_BYTE)
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break;
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w8001->idx = 0;
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- parse_data(w8001->data, &coord);
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+ parse_pen_data(w8001->data, &coord);
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report_pen_events(w8001, &coord);
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break;
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/* control packet */
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case W8001_PKTLEN_TPCCTL - 1:
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- tmp = (w8001->data[0] & W8001_TOUCH_MASK);
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+ tmp = w8001->data[0] & W8001_TOUCH_MASK;
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if (tmp == W8001_TOUCH_BYTE)
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break;
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@@ -249,7 +337,7 @@ static irqreturn_t w8001_interrupt(struct serio *serio,
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/* 2 finger touch packet */
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case W8001_PKTLEN_TOUCH2FG - 1:
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w8001->idx = 0;
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- parse_touch(w8001);
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+ parse_multi_touch(w8001);
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break;
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}
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@@ -279,6 +367,7 @@ static int w8001_setup(struct w8001 *w8001)
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{
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struct input_dev *dev = w8001->dev;
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struct w8001_coord coord;
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+ struct w8001_touch_query touch;
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int error;
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error = w8001_command(w8001, W8001_CMD_STOP, false);
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@@ -287,14 +376,21 @@ static int w8001_setup(struct w8001 *w8001)
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msleep(250); /* wait 250ms before querying the device */
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+ dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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+ strlcat(w8001->name, "Wacom Serial", sizeof(w8001->name));
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+
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/* penabled? */
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error = w8001_command(w8001, W8001_CMD_QUERY, true);
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if (!error) {
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+ __set_bit(BTN_TOUCH, dev->keybit);
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__set_bit(BTN_TOOL_PEN, dev->keybit);
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__set_bit(BTN_TOOL_RUBBER, dev->keybit);
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__set_bit(BTN_STYLUS, dev->keybit);
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__set_bit(BTN_STYLUS2, dev->keybit);
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- parse_data(w8001->response, &coord);
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+
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+ parse_pen_data(w8001->response, &coord);
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+ w8001->max_pen_x = coord.x;
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+ w8001->max_pen_y = coord.y;
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input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0);
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input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0);
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@@ -303,6 +399,8 @@ static int w8001_setup(struct w8001 *w8001)
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input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
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input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
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}
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+ w8001->id = 0x90;
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+ strlcat(w8001->name, " Penabled", sizeof(w8001->name));
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}
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/* Touch enabled? */
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@@ -313,24 +411,38 @@ static int w8001_setup(struct w8001 *w8001)
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* second byte is empty, which indicates touch is not supported.
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*/
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if (!error && w8001->response[1]) {
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- struct w8001_touch_query touch;
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+ __set_bit(BTN_TOUCH, dev->keybit);
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+ __set_bit(BTN_TOOL_FINGER, dev->keybit);
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parse_touchquery(w8001->response, &touch);
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+ w8001->max_touch_x = touch.x;
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+ w8001->max_touch_y = touch.y;
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+
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+ /* scale to pen maximum */
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+ if (w8001->max_pen_x && w8001->max_pen_y) {
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+ touch.x = w8001->max_pen_x;
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+ touch.y = w8001->max_pen_y;
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+ }
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input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0);
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input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0);
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- __set_bit(BTN_TOOL_FINGER, dev->keybit);
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switch (touch.sensor_id) {
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case 0:
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case 2:
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w8001->pktlen = W8001_PKTLEN_TOUCH93;
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+ w8001->id = 0x93;
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+ strlcat(w8001->name, " 1FG", sizeof(w8001->name));
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break;
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+
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case 1:
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case 3:
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case 4:
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w8001->pktlen = W8001_PKTLEN_TOUCH9A;
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+ strlcat(w8001->name, " 1FG", sizeof(w8001->name));
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+ w8001->id = 0x9a;
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break;
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+
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case 5:
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w8001->pktlen = W8001_PKTLEN_TOUCH2FG;
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@@ -341,10 +453,18 @@ static int w8001_setup(struct w8001 *w8001)
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0, touch.y, 0, 0);
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input_set_abs_params(dev, ABS_MT_TOOL_TYPE,
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0, MT_TOOL_MAX, 0, 0);
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+
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+ strlcat(w8001->name, " 2FG", sizeof(w8001->name));
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+ if (w8001->max_pen_x && w8001->max_pen_y)
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+ w8001->id = 0xE3;
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+ else
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+ w8001->id = 0xE2;
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break;
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}
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}
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+ strlcat(w8001->name, " Touchscreen", sizeof(w8001->name));
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+
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return w8001_command(w8001, W8001_CMD_START, false);
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}
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@@ -384,22 +504,10 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
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}
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w8001->serio = serio;
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- w8001->id = serio->id.id;
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w8001->dev = input_dev;
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init_completion(&w8001->cmd_done);
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snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys);
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- input_dev->name = "Wacom W8001 Penabled Serial TouchScreen";
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- input_dev->phys = w8001->phys;
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- input_dev->id.bustype = BUS_RS232;
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- input_dev->id.vendor = SERIO_W8001;
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- input_dev->id.product = w8001->id;
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- input_dev->id.version = 0x0100;
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- input_dev->dev.parent = &serio->dev;
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-
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- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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- __set_bit(BTN_TOUCH, input_dev->keybit);
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-
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serio_set_drvdata(serio, w8001);
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err = serio_open(serio, drv);
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if (err)
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@@ -409,6 +517,14 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
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if (err)
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goto fail3;
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+ input_dev->name = w8001->name;
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+ input_dev->phys = w8001->phys;
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+ input_dev->id.product = w8001->id;
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+ input_dev->id.bustype = BUS_RS232;
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+ input_dev->id.vendor = 0x056a;
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+ input_dev->id.version = 0x0100;
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+ input_dev->dev.parent = &serio->dev;
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+
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err = input_register_device(w8001->dev);
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|
if (err)
|
|
|
goto fail3;
|