aiptek linux驱动代码

发布于：2025-02-11 ⋅ 阅读:(70) ⋅ 点赞:(0)

// SPDX-License-Identifier: GPL-2.0-or-later
/*

  • Native support for the Aiptek HyperPen USB Tablets
  • (4000U/5000U/6000U/8000U/12000U)
  • 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.

*/

#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>

/*

  • 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, K

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