cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/tablet/aiptek.c

/*
 *  Native support for the Aiptek HyperPen USB Tablets
 *  (4000U/5000U/6000U/8000U/12000U)
 *
 *  Copyright (c) 2001      Chris Atenasio   <chris@crud.net>
 *  Copyright (c) 2002-2004 Bryan W. Headley <bwheadley@earthlink.net>
 *
 *  based on wacom.c by
 *     Vojtech Pavlik      <vojtech@suse.cz>
 *     Andreas Bach Aaen   <abach@stofanet.dk>
 *     Clifford Wolf       <clifford@clifford.at>
 *     Sam Mosel           <sam.mosel@computer.org>
 *     James E. Blair      <corvus@gnu.org>
 *     Daniel Egger        <egger@suse.de>
 *
 *  Many thanks to Oliver Kuechemann for his support.
 *
 *  ChangeLog:
 *      v0.1 - Initial release
 *      v0.2 - Hack to get around fake event 28's. (Bryan W. Headley)
 *      v0.3 - Make URB dynamic (Bryan W. Headley, Jun-8-2002)
 *             Released to Linux 2.4.19 and 2.5.x
 *      v0.4 - Rewrote substantial portions of the code to deal with
 *             corrected control sequences, timing, dynamic configuration,
 *             support of 6000U - 12000U, procfs, and macro key support
 *             (Jan-1-2003 - Feb-5-2003, Bryan W. Headley)
 *      v1.0 - Added support for diagnostic messages, count of messages
 *             received from URB - Mar-8-2003, Bryan W. Headley
 *      v1.1 - added support for tablet resolution, changed DV and proximity
 *             some corrections - Jun-22-2003, martin schneebacher
 *           - Added support for the sysfs interface, deprecating the
 *             procfs interface for 2.5.x kernel. Also added support for
 *             Wheel command. Bryan W. Headley July-15-2003.
 *      v1.2 - Reworked jitter timer as a kernel thread.
 *             Bryan W. Headley November-28-2003/Jan-10-2004.
 *      v1.3 - Repaired issue of kernel thread going nuts on single-processor
 *             machines, introduced programmableDelay as a command line
 *             parameter. Feb 7 2004, Bryan W. Headley.
 *      v1.4 - Re-wire jitter so it does not require a thread. Courtesy of
 *             Rene van Paassen. Added reporting of physical pointer device
 *             (e.g., stylus, mouse in reports 2, 3, 4, 5. We don't know
 *             for reports 1, 6.)
 *             what physical device reports for reports 1, 6.) Also enabled
 *             MOUSE and LENS tool button modes. Renamed "rubber" to "eraser".
 *             Feb 20, 2004, Bryan W. Headley.
 *      v1.5 - Added previousJitterable, so we don't do jitter delay when the
 *             user is holding a button down for periods of time.
 *
 * NOTE:
 *      This kernel driver is augmented by the "Aiptek" XFree86 input
 *      driver for your X server, as well as the Gaiptek GUI Front-end
 *      "Tablet Manager".
 *      These three products are highly interactive with one another,
 *      so therefore it's easier to document them all as one subsystem.
 *      Please visit the project's "home page", located at,
 *      http://aiptektablet.sourceforge.net.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb/input.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>

/*
 * Version Information
 */

#define DRIVER_VERSION "v2.3 (May 2, 2007)"

#define DRIVER_AUTHOR  "Bryan W. Headley/Chris Atenasio/Cedric Brun/Rene van Paassen"

#define DRIVER_DESC    "Aiptek HyperPen USB Tablet Driver (Linux 2.6.x)"

/*
 * Aiptek status packet:
 *
 * (returned as Report 1 - relative coordinates from mouse and stylus)
 *
 *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 * byte0   0     0     0     0     0     0     0     1
 * byte1   0     0     0     0     0    BS2   BS    Tip
 * byte2  X7    X6    X5    X4    X3    X2    X1    X0
 * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 *
 * (returned as Report 2 - absolute coordinates from the stylus)
 *
 *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 * byte0   0     0     0     0     0     0     1     0
 * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 *
 * (returned as Report 3 - absolute coordinates from the mouse)
 *
 *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 * byte0   0     0     0     0     0     0     1     1
 * byte1  X7    X6    X5    X4    X3    X2    X1    X0
 * byte2  X15   X14   X13   X12   X11   X10   X9    X8
 * byte3  Y7    Y6    Y5    Y4    Y3    Y2    Y1    Y0
 * byte4  Y15   Y14   Y13   Y12   Y11   Y10   Y9    Y8
 * byte5   *     *     *    BS2   BS1   Tip   IR    DV
 * byte6  P7    P6    P5    P4    P3    P2    P1    P0
 * byte7  P15   P14   P13   P12   P11   P10   P9    P8
 *
 * (returned as Report 4 - macrokeys from the stylus)
 *
 *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 * byte0   0     0     0     0     0     1     0     0
 * byte1   0     0     0    BS2   BS    Tip   IR    DV
 * byte2   0     0     0     0     0     0     1     0
 * byte3   0     0     0    K4    K3    K2    K1    K0
 * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 *
 * (returned as Report 5 - macrokeys from the mouse)
 *
 *        bit7  bit6  bit5  bit4  bit3  bit2  bit1  bit0
 * byte0   0     0     0     0     0     1     0     1
 * byte1   0     0     0    BS2   BS    Tip   IR    DV
 * byte2   0     0     0     0     0     0     1     0
 * byte3   0     0     0    K4    K3    K2    K1    K0
 * byte4  P7    P6    P5    P4    P3    P2    P1    P0
 * byte5  P15   P14   P13   P12   P11   P10   P9    P8
 *
 * IR: In Range = Proximity on
 * DV = Data Valid
 * BS = Barrel Switch (as in, macro keys)
 * BS2 also referred to as Tablet Pick
 *
 * Command Summary:
 *
 * Use report_type CONTROL (3)
 * Use report_id   2
 *
 * Command/Data    Description     Return Bytes    Return Value
 * 0x10/0x00       SwitchToMouse       0
 * 0x10/0x01       SwitchToTablet      0
 * 0x18/0x04       SetResolution       0
 * 0x12/0xFF       AutoGainOn          0
 * 0x17/0x00       FilterOn            0
 * 0x01/0x00       GetXExtension       2           MaxX
 * 0x01/0x01       GetYExtension       2           MaxY
 * 0x02/0x00       GetModelCode        2           ModelCode = LOBYTE
 * 0x03/0x00       GetODMCode          2           ODMCode
 * 0x08/0x00       GetPressureLevels   2           =512
 * 0x04/0x00       GetFirmwareVersion  2           Firmware Version
 * 0x11/0x02       EnableMacroKeys     0
 *
 * To initialize the tablet:
 *
 * (1) Send Resolution500LPI (Command)
 * (2) Query for Model code (Option Report)
 * (3) Query for ODM code (Option Report)
 * (4) Query for firmware (Option Report)
 * (5) Query for GetXExtension (Option Report)
 * (6) Query for GetYExtension (Option Report)
 * (7) Query for GetPressureLevels (Option Report)
 * (8) SwitchToTablet for Absolute coordinates, or
 *     SwitchToMouse for Relative coordinates (Command)
 * (9) EnableMacroKeys (Command)
 * (10) FilterOn (Command)
 * (11) AutoGainOn (Command)
 *
 * (Step 9 can be omitted, but you'll then have no function keys.)
 */


#define USB_VENDOR_ID_AIPTEK				0x08ca

#define USB_VENDOR_ID_KYE				0x0458

#define USB_REQ_GET_REPORT				0x01

#define USB_REQ_SET_REPORT				0x09

	/* PointerMode codes
         */

#define AIPTEK_POINTER_ONLY_MOUSE_MODE			0

#define AIPTEK_POINTER_ONLY_STYLUS_MODE			1

#define AIPTEK_POINTER_EITHER_MODE			2


#define AIPTEK_POINTER_ALLOW_MOUSE_MODE(a)		\
	(a == AIPTEK_POINTER_ONLY_MOUSE_MODE ||         \
         a == AIPTEK_POINTER_EITHER_MODE)

#define AIPTEK_POINTER_ALLOW_STYLUS_MODE(a)		\
	(a == AIPTEK_POINTER_ONLY_STYLUS_MODE ||        \
         a == AIPTEK_POINTER_EITHER_MODE)

	/* CoordinateMode code
         */

#define AIPTEK_COORDINATE_RELATIVE_MODE			0

#define AIPTEK_COORDINATE_ABSOLUTE_MODE			1

       /* XTilt and YTilt values
        */

#define AIPTEK_TILT_MIN					(-128)

#define AIPTEK_TILT_MAX					127

#define AIPTEK_TILT_DISABLE				(-10101)

	/* Wheel values
         */

#define AIPTEK_WHEEL_MIN				0

#define AIPTEK_WHEEL_MAX				1024

#define AIPTEK_WHEEL_DISABLE				(-10101)

	/* ToolCode values, which BTW are 0x140 .. 0x14f
         * We have things set up such that if the tool button has changed,
         * the tools get reset.
         */
	/* toolMode codes
         */

#define AIPTEK_TOOL_BUTTON_PEN_MODE			BTN_TOOL_PEN

#define AIPTEK_TOOL_BUTTON_PENCIL_MODE			BTN_TOOL_PENCIL

#define AIPTEK_TOOL_BUTTON_BRUSH_MODE			BTN_TOOL_BRUSH

#define AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE		BTN_TOOL_AIRBRUSH

#define AIPTEK_TOOL_BUTTON_ERASER_MODE			BTN_TOOL_RUBBER

#define AIPTEK_TOOL_BUTTON_MOUSE_MODE			BTN_TOOL_MOUSE

#define AIPTEK_TOOL_BUTTON_LENS_MODE			BTN_TOOL_LENS

	/* Diagnostic message codes
         */

#define AIPTEK_DIAGNOSTIC_NA				0

#define AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE	1

#define AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE	2

#define AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED		3

	/* Time to wait (in ms) to help mask hand jittering
         * when pressing the stylus buttons.
         */

#define AIPTEK_JITTER_DELAY_DEFAULT			50

	/* Time to wait (in ms) in-between sending the tablet
         * a command and beginning the process of reading the return
         * sequence from the tablet.
         */

#define AIPTEK_PROGRAMMABLE_DELAY_25		25

#define AIPTEK_PROGRAMMABLE_DELAY_50		50

#define AIPTEK_PROGRAMMABLE_DELAY_100		100

#define AIPTEK_PROGRAMMABLE_DELAY_200		200

#define AIPTEK_PROGRAMMABLE_DELAY_300		300

#define AIPTEK_PROGRAMMABLE_DELAY_400		400

#define AIPTEK_PROGRAMMABLE_DELAY_DEFAULT	AIPTEK_PROGRAMMABLE_DELAY_400

	/* Mouse button programming
         */

#define AIPTEK_MOUSE_LEFT_BUTTON		0x04

#define AIPTEK_MOUSE_RIGHT_BUTTON		0x08

#define AIPTEK_MOUSE_MIDDLE_BUTTON		0x10

	/* Stylus button programming
         */

#define AIPTEK_STYLUS_LOWER_BUTTON		0x08

#define AIPTEK_STYLUS_UPPER_BUTTON		0x10

	/* Length of incoming packet from the tablet
         */

#define AIPTEK_PACKET_LENGTH			8

	/* We report in EV_MISC both the proximity and
         * whether the report came from the stylus, tablet mouse
         * or "unknown" -- Unknown when the tablet is in relative
         * mode, because we only get report 1's.
         */

#define AIPTEK_REPORT_TOOL_UNKNOWN		0x10

#define AIPTEK_REPORT_TOOL_STYLUS		0x20

#define AIPTEK_REPORT_TOOL_MOUSE		0x40


static int programmableDelay = AIPTEK_PROGRAMMABLE_DELAY_DEFAULT;

static int jitterDelay = AIPTEK_JITTER_DELAY_DEFAULT;


struct aiptek_features {
	
int odmCode;		/* Tablet manufacturer code       */
	
int modelCode;		/* Tablet model code (not unique) */
	
int firmwareCode;	/* prom/eeprom version            */
	
char usbPath[64 + 1];	/* device's physical usb path     */
};


struct aiptek_settings {
	
int pointerMode;	/* stylus-, mouse-only or either */
	
int coordinateMode;	/* absolute/relative coords      */
	
int toolMode;		/* pen, pencil, brush, etc. tool */
	
int xTilt;		/* synthetic xTilt amount        */
	
int yTilt;		/* synthetic yTilt amount        */
	
int wheel;		/* synthetic wheel amount        */
	
int stylusButtonUpper;	/* stylus upper btn delivers...  */
	
int stylusButtonLower;	/* stylus lower btn delivers...  */
	
int mouseButtonLeft;	/* mouse left btn delivers...    */
	
int mouseButtonMiddle;	/* mouse middle btn delivers...  */
	
int mouseButtonRight;	/* mouse right btn delivers...   */
	
int programmableDelay;	/* delay for tablet programming  */
	
int jitterDelay;	/* delay for hand jittering      */
};


struct aiptek {
	
struct input_dev *inputdev;		/* input device struct           */
	
struct usb_interface *intf;		/* usb interface struct          */
	
struct urb *urb;			/* urb for incoming reports      */
	
dma_addr_t data_dma;			/* our dma stuffage              */
	
struct aiptek_features features;	/* tablet's array of features    */
	
struct aiptek_settings curSetting;	/* tablet's current programmable */
	
struct aiptek_settings newSetting;	/* ... and new param settings    */
	
unsigned int ifnum;			/* interface number for IO       */
	
int diagnostic;				/* tablet diagnostic codes       */
	
unsigned long eventCount;		/* event count                   */
	
int inDelay;				/* jitter: in jitter delay?      */
	
unsigned long endDelay;			/* jitter: time when delay ends  */
	
int previousJitterable;			/* jitterable prev value     */

	
int lastMacro;				/* macro key to reset            */
	
int previousToolMode;			/* pen, pencil, brush, etc. tool */
	
unsigned char *data;			/* incoming packet data          */
};


static const int eventTypes[] = {
        EV_KEY, EV_ABS, EV_REL, EV_MSC,
};


static const int absEvents[] = {
        ABS_X, ABS_Y, ABS_PRESSURE, ABS_TILT_X, ABS_TILT_Y,
        ABS_WHEEL, ABS_MISC,
};


static const int relEvents[] = {
        REL_X, REL_Y, REL_WHEEL,
};


static const int buttonEvents[] = {
	BTN_LEFT, BTN_RIGHT, BTN_MIDDLE,
	BTN_TOOL_PEN, BTN_TOOL_RUBBER, BTN_TOOL_PENCIL, BTN_TOOL_AIRBRUSH,
	BTN_TOOL_BRUSH, BTN_TOOL_MOUSE, BTN_TOOL_LENS, BTN_TOUCH,
	BTN_STYLUS, BTN_STYLUS2,
};

/*
 * Permit easy lookup of keyboard events to send, versus
 * the bitmap which comes from the tablet. This hides the
 * issue that the F_keys are not sequentially numbered.
 */

static const int macroKeyEvents[] = {
	KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
	KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11,
	KEY_F12, KEY_F13, KEY_F14, KEY_F15, KEY_F16, KEY_F17,
	KEY_F18, KEY_F19, KEY_F20, KEY_F21, KEY_F22, KEY_F23,
	KEY_F24, KEY_STOP, KEY_AGAIN, KEY_PROPS, KEY_UNDO,
	KEY_FRONT, KEY_COPY, KEY_OPEN, KEY_PASTE, 0
};

/***********************************************************************
 * Map values to strings and back. Every map should have the following
 * as its last element: { NULL, AIPTEK_INVALID_VALUE }.
 */

#define AIPTEK_INVALID_VALUE	-1


struct aiptek_map {
	
const char *string;
	
int value;
};


static int map_str_to_val(const struct aiptek_map *map, const char *str, size_t count) { const struct aiptek_map *p; if (str[count - 1] == '\n') count--; for (p = map; p->string; p++) if (!strncmp(str, p->string, count)) return p->value; return AIPTEK_INVALID_VALUE; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov6181.33%150.00%
Rene van Paassen1418.67%150.00%
Total75100.00%2100.00%


static const char *map_val_to_str(const struct aiptek_map *map, int val) { const struct aiptek_map *p; for (p = map; p->value != AIPTEK_INVALID_VALUE; p++) if (val == p->value) return p->string; return "unknown"; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov54100.00%1100.00%
Total54100.00%1100.00%

/*********************************************************************** * aiptek_irq can receive one of six potential reports. * The documentation for each is in the body of the function. * * The tablet reports on several attributes per invocation of * aiptek_irq. Because the Linux Input Event system allows the * transmission of ONE attribute per input_report_xxx() call, * collation has to be done on the other end to reconstitute * a complete tablet report. Further, the number of Input Event reports * submitted varies, depending on what USB report type, and circumstance. * To deal with this, EV_MSC is used to indicate an 'end-of-report' * message. This has been an undocumented convention understood by the kernel * tablet driver and clients such as gpm and XFree86's tablet drivers. * * Of the information received from the tablet, the one piece I * cannot transmit is the proximity bit (without resorting to an EV_MSC * convention above.) I therefore have taken over REL_MISC and ABS_MISC * (for relative and absolute reports, respectively) for communicating * Proximity. Why two events? I thought it interesting to know if the * Proximity event occurred while the tablet was in absolute or relative * mode. * Update: REL_MISC proved not to be such a good idea. With REL_MISC you * get an event transmitted each time. ABS_MISC works better, since it * can be set and re-set. Thus, only using ABS_MISC from now on. * * Other tablets use the notion of a certain minimum stylus pressure * to infer proximity. While that could have been done, that is yet * another 'by convention' behavior, the documentation for which * would be spread between two (or more) pieces of software. * * EV_MSC usage was terminated for this purpose in Linux 2.5.x, and * replaced with the input_sync() method (which emits EV_SYN.) */
static void aiptek_irq(struct urb *urb) { struct aiptek *aiptek = urb->context; unsigned char *data = aiptek->data; struct input_dev *inputdev = aiptek->inputdev; struct usb_interface *intf = aiptek->intf; int jitterable = 0; int retval, macro, x, y, z, left, right, middle, p, dv, tip, bs, pck; switch (urb->status) { case 0: /* Success */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* This urb is terminated, clean up */ dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", __func__, urb->status); return; default: dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", __func__, urb->status); goto exit; } /* See if we are in a delay loop -- throw out report if true. */ if (aiptek->inDelay == 1 && time_after(aiptek->endDelay, jiffies)) { goto exit; } aiptek->inDelay = 0; aiptek->eventCount++; /* Report 1 delivers relative coordinates with either a stylus * or the mouse. You do not know, however, which input * tool generated the event. */ if (data[0] == 1) { if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_ABSOLUTE_MODE) { aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE; } else { x = (signed char) data[2]; y = (signed char) data[3]; /* jitterable keeps track of whether any button has been pressed. * We're also using it to remap the physical mouse button mask * to pseudo-settings. (We don't specifically care about it's * value after moving/transposing mouse button bitmasks, except * that a non-zero value indicates that one or more * mouse button was pressed.) */ jitterable = data[1] & 0x07; left = (data[1] & aiptek->curSetting.mouseButtonLeft >> 2) != 0 ? 1 : 0; right = (data[1] & aiptek->curSetting.mouseButtonRight >> 2) != 0 ? 1 : 0; middle = (data[1] & aiptek->curSetting.mouseButtonMiddle >> 2) != 0 ? 1 : 0; input_report_key(inputdev, BTN_LEFT, left); input_report_key(inputdev, BTN_MIDDLE, middle); input_report_key(inputdev, BTN_RIGHT, right); input_report_abs(inputdev, ABS_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN); input_report_rel(inputdev, REL_X, x); input_report_rel(inputdev, REL_Y, y); /* Wheel support is in the form of a single-event * firing. */ if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) { input_report_rel(inputdev, REL_WHEEL, aiptek->curSetting.wheel); aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE; } if (aiptek->lastMacro != -1) { input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0); aiptek->lastMacro = -1; } input_sync(inputdev); } } /* Report 2 is delivered only by the stylus, and delivers * absolute coordinates. */ else if (data[0] == 2) { if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) { aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE; } else if (!AIPTEK_POINTER_ALLOW_STYLUS_MODE (aiptek->curSetting.pointerMode)) { aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED; } else { x = get_unaligned_le16(data + 1); y = get_unaligned_le16(data + 3); z = get_unaligned_le16(data + 6); dv = (data[5] & 0x01) != 0 ? 1 : 0; p = (data[5] & 0x02) != 0 ? 1 : 0; tip = (data[5] & 0x04) != 0 ? 1 : 0; /* Use jitterable to re-arrange button masks */ jitterable = data[5] & 0x18; bs = (data[5] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0; pck = (data[5] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0; /* dv indicates 'data valid' (e.g., the tablet is in sync * and has delivered a "correct" report) We will ignore * all 'bad' reports... */ if (dv != 0) { /* If the selected tool changed, reset the old * tool key, and set the new one. */ if (aiptek->previousToolMode != aiptek->curSetting.toolMode) { input_report_key(inputdev, aiptek->previousToolMode, 0); input_report_key(inputdev, aiptek->curSetting.toolMode, 1); aiptek->previousToolMode = aiptek->curSetting.toolMode; } if (p != 0) { input_report_abs(inputdev, ABS_X, x); input_report_abs(inputdev, ABS_Y, y); input_report_abs(inputdev, ABS_PRESSURE, z); input_report_key(inputdev, BTN_TOUCH, tip); input_report_key(inputdev, BTN_STYLUS, bs); input_report_key(inputdev, BTN_STYLUS2, pck); if (aiptek->curSetting.xTilt != AIPTEK_TILT_DISABLE) { input_report_abs(inputdev, ABS_TILT_X, aiptek->curSetting.xTilt); } if (aiptek->curSetting.yTilt != AIPTEK_TILT_DISABLE) { input_report_abs(inputdev, ABS_TILT_Y, aiptek->curSetting.yTilt); } /* Wheel support is in the form of a single-event * firing. */ if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) { input_report_abs(inputdev, ABS_WHEEL, aiptek->curSetting.wheel); aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE; } } input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS); if (aiptek->lastMacro != -1) { input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0); aiptek->lastMacro = -1; } input_sync(inputdev); } } } /* Report 3's come from the mouse in absolute mode. */ else if (data[0] == 3) { if (aiptek->curSetting.coordinateMode == AIPTEK_COORDINATE_RELATIVE_MODE) { aiptek->diagnostic = AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE; } else if (!AIPTEK_POINTER_ALLOW_MOUSE_MODE (aiptek->curSetting.pointerMode)) { aiptek->diagnostic = AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED; } else { x = get_unaligned_le16(data + 1); y = get_unaligned_le16(data + 3); jitterable = data[5] & 0x1c; dv = (data[5] & 0x01) != 0 ? 1 : 0; p = (data[5] & 0x02) != 0 ? 1 : 0; left = (data[5] & aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0; right = (data[5] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0; middle = (data[5] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0; if (dv != 0) { /* If the selected tool changed, reset the old * tool key, and set the new one. */ if (aiptek->previousToolMode != aiptek->curSetting.toolMode) { input_report_key(inputdev, aiptek->previousToolMode, 0); input_report_key(inputdev, aiptek->curSetting.toolMode, 1); aiptek->previousToolMode = aiptek->curSetting.toolMode; } if (p != 0) { input_report_abs(inputdev, ABS_X, x); input_report_abs(inputdev, ABS_Y, y); input_report_key(inputdev, BTN_LEFT, left); input_report_key(inputdev, BTN_MIDDLE, middle); input_report_key(inputdev, BTN_RIGHT, right); /* Wheel support is in the form of a single-event * firing. */ if (aiptek->curSetting.wheel != AIPTEK_WHEEL_DISABLE) { input_report_abs(inputdev, ABS_WHEEL, aiptek->curSetting.wheel); aiptek->curSetting.wheel = AIPTEK_WHEEL_DISABLE; } } input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_MOUSE); if (aiptek->lastMacro != -1) { input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0); aiptek->lastMacro = -1; } input_sync(inputdev); } } } /* Report 4s come from the macro keys when pressed by stylus */ else if (data[0] == 4) { jitterable = data[1] & 0x18; dv = (data[1] & 0x01) != 0 ? 1 : 0; p = (data[1] & 0x02) != 0 ? 1 : 0; tip = (data[1] & 0x04) != 0 ? 1 : 0; bs = (data[1] & aiptek->curSetting.stylusButtonLower) != 0 ? 1 : 0; pck = (data[1] & aiptek->curSetting.stylusButtonUpper) != 0 ? 1 : 0; macro = dv && p && tip && !(data[3] & 1) ? (data[3] >> 1) : -1; z = get_unaligned_le16(data + 4); if (dv) { /* If the selected tool changed, reset the old * tool key, and set the new one. */ if (aiptek->previousToolMode != aiptek->curSetting.toolMode) { input_report_key(inputdev, aiptek->previousToolMode, 0); input_report_key(inputdev, aiptek->curSetting.toolMode, 1); aiptek->previousToolMode = aiptek->curSetting.toolMode; } } if (aiptek->lastMacro != -1 && aiptek->lastMacro != macro) { input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0); aiptek->lastMacro = -1; } if (macro != -1 && macro != aiptek->lastMacro) { input_report_key(inputdev, macroKeyEvents[macro], 1); aiptek->lastMacro = macro; } input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_STYLUS); input_sync(inputdev); } /* Report 5s come from the macro keys when pressed by mouse */ else if (data[0] == 5) { jitterable = data[1] & 0x1c; dv = (data[1] & 0x01) != 0 ? 1 : 0; p = (data[1] & 0x02) != 0 ? 1 : 0; left = (data[1]& aiptek->curSetting.mouseButtonLeft) != 0 ? 1 : 0; right = (data[1] & aiptek->curSetting.mouseButtonRight) != 0 ? 1 : 0; middle = (data[1] & aiptek->curSetting.mouseButtonMiddle) != 0 ? 1 : 0; macro = dv && p && left && !(data[3] & 1) ? (data[3] >> 1) : 0; if (dv) { /* If the selected tool changed, reset the old * tool key, and set the new one. */ if (aiptek->previousToolMode != aiptek->curSetting.toolMode) { input_report_key(inputdev, aiptek->previousToolMode, 0); input_report_key(inputdev, aiptek->curSetting.toolMode, 1); aiptek->previousToolMode = aiptek->curSetting.toolMode; } } if (aiptek->lastMacro != -1 && aiptek->lastMacro != macro) { input_report_key(inputdev, macroKeyEvents[aiptek->lastMacro], 0); aiptek->lastMacro = -1; } if (macro != -1 && macro != aiptek->lastMacro) { input_report_key(inputdev, macroKeyEvents[macro], 1); aiptek->lastMacro = macro; } input_report_abs(inputdev, ABS_MISC, p | AIPTEK_REPORT_TOOL_MOUSE); input_sync(inputdev); } /* We have no idea which tool can generate a report 6. Theoretically, * neither need to, having been given reports 4 & 5 for such use. * However, report 6 is the 'official-looking' report for macroKeys; * reports 4 & 5 supposively are used to support unnamed, unknown * hat switches (which just so happen to be the macroKeys.) */ else if (data[0] == 6) { macro = get_unaligned_le16(data + 1); if (macro > 0) { input_report_key(inputdev, macroKeyEvents[macro - 1], 0); } if (macro < 25) { input_report_key(inputdev, macroKeyEvents[macro + 1], 0); } /* If the selected tool changed, reset the old tool key, and set the new one. */ if (aiptek->previousToolMode != aiptek->curSetting.toolMode) { input_report_key(inputdev, aiptek->previousToolMode, 0); input_report_key(inputdev, aiptek->curSetting.toolMode, 1); aiptek->previousToolMode = aiptek->curSetting.toolMode; } input_report_key(inputdev, macroKeyEvents[macro], 1); input_report_abs(inputdev, ABS_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN); input_sync(inputdev); } else { dev_dbg(&intf->dev, "Unknown report %d\n", data[0]); } /* Jitter may occur when the user presses a button on the stlyus * or the mouse. What we do to prevent that is wait 'x' milliseconds * following a 'jitterable' event, which should give the hand some time * stabilize itself. * * We just introduced aiptek->previousJitterable to carry forth the * notion that jitter occurs when the button state changes from on to off: * a person drawing, holding a button down is not subject to jittering. * With that in mind, changing from upper button depressed to lower button * WILL transition through a jitter delay. */ if (aiptek->previousJitterable != jitterable && aiptek->curSetting.jitterDelay != 0 && aiptek->inDelay != 1) { aiptek->endDelay = jiffies + ((aiptek->curSetting.jitterDelay * HZ) / 1000); aiptek->inDelay = 1; } aiptek->previousJitterable = jitterable; exit: retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval != 0) { dev_err(&intf->dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); } }

Contributors

PersonTokensPropCommitsCommitProp
Bryan W. Headley168981.12%215.38%
Rene van Paassen31915.32%430.77%
Greg Kroah-Hartman371.78%323.08%
Mark Vytlacil190.91%17.69%
Harvey Harrison100.48%215.38%
Dmitry Torokhov80.38%17.69%
Total2082100.00%13100.00%

/*********************************************************************** * These are the USB id's known so far. We do not identify them to * specific Aiptek model numbers, because there has been overlaps, * use, and reuse of id's in existing models. Certain models have * been known to use more than one ID, indicative perhaps of * manufacturing revisions. In any event, we consider these * IDs to not be model-specific nor unique. */ static const struct usb_device_id aiptek_ids[] = { {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x01)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x10)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x20)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x21)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x22)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x23)}, {USB_DEVICE(USB_VENDOR_ID_AIPTEK, 0x24)}, {USB_DEVICE(USB_VENDOR_ID_KYE, 0x5003)}, {} }; MODULE_DEVICE_TABLE(usb, aiptek_ids); /*********************************************************************** * Open an instance of the tablet driver. */
static int aiptek_open(struct input_dev *inputdev) { struct aiptek *aiptek = input_get_drvdata(inputdev); aiptek->urb->dev = interface_to_usbdev(aiptek->intf); if (usb_submit_urb(aiptek->urb, GFP_KERNEL) != 0) return -EIO; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Bryan W. Headley4787.04%133.33%
Oliver Neukum47.41%133.33%
Dmitry Torokhov35.56%133.33%
Total54100.00%3100.00%

/*********************************************************************** * Close an instance of the tablet driver. */
static void aiptek_close(struct input_dev *inputdev) { struct aiptek *aiptek = input_get_drvdata(inputdev); usb_kill_urb(aiptek->urb); }

Contributors

PersonTokensPropCommitsCommitProp
Bryan W. Headley2485.71%133.33%
Dmitry Torokhov310.71%133.33%
Borislav Petkov13.57%133.33%
Total28100.00%3100.00%

/*********************************************************************** * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x, * where they were known as usb_set_report and usb_get_report. */
static int aiptek_set_report(struct aiptek *aiptek