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linuxdebug/drivers/input/tablet/aiptek.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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.
*/
#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, 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;
}
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";
}
/***********************************************************************
* 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);
}
}
/***********************************************************************
* 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;
}
/***********************************************************************
* 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);
}
/***********************************************************************
* 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,
unsigned char report_type,
unsigned char report_id, void *buffer, int size)
{
struct usb_device *udev = interface_to_usbdev(aiptek->intf);
return usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
USB_REQ_SET_REPORT,
USB_TYPE_CLASS | USB_RECIP_INTERFACE |
USB_DIR_OUT, (report_type << 8) + report_id,
aiptek->ifnum, buffer, size, 5000);
}
static int
aiptek_get_report(struct aiptek *aiptek,
unsigned char report_type,
unsigned char report_id, void *buffer, int size)
{
struct usb_device *udev = interface_to_usbdev(aiptek->intf);
return usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
USB_REQ_GET_REPORT,
USB_TYPE_CLASS | USB_RECIP_INTERFACE |
USB_DIR_IN, (report_type << 8) + report_id,
aiptek->ifnum, buffer, size, 5000);
}
/***********************************************************************
* Send a command to the tablet.
*/
static int
aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
{
const int sizeof_buf = 3 * sizeof(u8);
int ret;
u8 *buf;
buf = kmalloc(sizeof_buf, GFP_KERNEL);
if (!buf)
return -ENOMEM;
buf[0] = 2;
buf[1] = command;
buf[2] = data;
if ((ret =
aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
dev_dbg(&aiptek->intf->dev,
"aiptek_program: failed, tried to send: 0x%02x 0x%02x\n",
command, data);
}
kfree(buf);
return ret < 0 ? ret : 0;
}
/***********************************************************************
* Retrieve information from the tablet. Querying info is defined as first
* sending the {command,data} sequence as a command, followed by a wait
* (aka, "programmaticDelay") and then a "read" request.
*/
static int
aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
{
const int sizeof_buf = 3 * sizeof(u8);
int ret;
u8 *buf;
buf = kmalloc(sizeof_buf, GFP_KERNEL);
if (!buf)
return -ENOMEM;
buf[0] = 2;
buf[1] = command;
buf[2] = data;
if (aiptek_command(aiptek, command, data) != 0) {
kfree(buf);
return -EIO;
}
msleep(aiptek->curSetting.programmableDelay);
if (aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf) != sizeof_buf) {
dev_dbg(&aiptek->intf->dev,
"aiptek_query failed: returned 0x%02x 0x%02x 0x%02x\n",
buf[0], buf[1], buf[2]);
ret = -EIO;
} else {
ret = get_unaligned_le16(buf + 1);
}
kfree(buf);
return ret;
}
/***********************************************************************
* Program the tablet into either absolute or relative mode.
* We also get information about the tablet's size.
*/
static int aiptek_program_tablet(struct aiptek *aiptek)
{
int ret;
/* Execute Resolution500LPI */
if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
return ret;
/* Query getModelCode */
if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
return ret;
aiptek->features.modelCode = ret & 0xff;
/* Query getODMCode */
if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
return ret;
aiptek->features.odmCode = ret;
/* Query getFirmwareCode */
if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
return ret;
aiptek->features.firmwareCode = ret;
/* Query getXextension */
if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
return ret;
input_set_abs_params(aiptek->inputdev, ABS_X, 0, ret - 1, 0, 0);
/* Query getYextension */
if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
return ret;
input_set_abs_params(aiptek->inputdev, ABS_Y, 0, ret - 1, 0, 0);
/* Query getPressureLevels */
if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
return ret;
input_set_abs_params(aiptek->inputdev, ABS_PRESSURE, 0, ret - 1, 0, 0);
/* Depending on whether we are in absolute or relative mode, we will
* do a switchToTablet(absolute) or switchToMouse(relative) command.
*/
if (aiptek->curSetting.coordinateMode ==
AIPTEK_COORDINATE_ABSOLUTE_MODE) {
/* Execute switchToTablet */
if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
return ret;
}
} else {
/* Execute switchToMouse */
if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
return ret;
}
}
/* Enable the macro keys */
if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
return ret;
#if 0
/* Execute FilterOn */
if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
return ret;
#endif
/* Execute AutoGainOn */
if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
return ret;
/* Reset the eventCount, so we track events from last (re)programming
*/
aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
aiptek->eventCount = 0;
return 0;
}
/***********************************************************************
* Sysfs functions. Sysfs prefers that individually-tunable parameters
* exist in their separate pseudo-files. Summary data that is immutable
* may exist in a singular file so long as you don't define a writeable
* interface.
*/
/***********************************************************************
* support the 'size' file -- display support
*/
static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%dx%d\n",
input_abs_get_max(aiptek->inputdev, ABS_X) + 1,
input_abs_get_max(aiptek->inputdev, ABS_Y) + 1);
}
/* These structs define the sysfs files, param #1 is the name of the
* file, param 2 is the file permissions, param 3 & 4 are to the
* output generator and input parser routines. Absence of a routine is
* permitted -- it only means can't either 'cat' the file, or send data
* to it.
*/
static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);
/***********************************************************************
* support routines for the 'pointer_mode' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static struct aiptek_map pointer_mode_map[] = {
{ "stylus", AIPTEK_POINTER_ONLY_STYLUS_MODE },
{ "mouse", AIPTEK_POINTER_ONLY_MOUSE_MODE },
{ "either", AIPTEK_POINTER_EITHER_MODE },
{ NULL, AIPTEK_INVALID_VALUE }
};
static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(pointer_mode_map,
aiptek->curSetting.pointerMode));
}
static ssize_t
store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_mode = map_str_to_val(pointer_mode_map, buf, count);
if (new_mode == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.pointerMode = new_mode;
return count;
}
static DEVICE_ATTR(pointer_mode,
S_IRUGO | S_IWUSR,
show_tabletPointerMode, store_tabletPointerMode);
/***********************************************************************
* support routines for the 'coordinate_mode' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static struct aiptek_map coordinate_mode_map[] = {
{ "absolute", AIPTEK_COORDINATE_ABSOLUTE_MODE },
{ "relative", AIPTEK_COORDINATE_RELATIVE_MODE },
{ NULL, AIPTEK_INVALID_VALUE }
};
static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(coordinate_mode_map,
aiptek->curSetting.coordinateMode));
}
static ssize_t
store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_mode = map_str_to_val(coordinate_mode_map, buf, count);
if (new_mode == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.coordinateMode = new_mode;
return count;
}
static DEVICE_ATTR(coordinate_mode,
S_IRUGO | S_IWUSR,
show_tabletCoordinateMode, store_tabletCoordinateMode);
/***********************************************************************
* support routines for the 'tool_mode' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static struct aiptek_map tool_mode_map[] = {
{ "mouse", AIPTEK_TOOL_BUTTON_MOUSE_MODE },
{ "eraser", AIPTEK_TOOL_BUTTON_ERASER_MODE },
{ "pencil", AIPTEK_TOOL_BUTTON_PENCIL_MODE },
{ "pen", AIPTEK_TOOL_BUTTON_PEN_MODE },
{ "brush", AIPTEK_TOOL_BUTTON_BRUSH_MODE },
{ "airbrush", AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE },
{ "lens", AIPTEK_TOOL_BUTTON_LENS_MODE },
{ NULL, AIPTEK_INVALID_VALUE }
};
static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(tool_mode_map,
aiptek->curSetting.toolMode));
}
static ssize_t
store_tabletToolMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_mode = map_str_to_val(tool_mode_map, buf, count);
if (new_mode == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.toolMode = new_mode;
return count;
}
static DEVICE_ATTR(tool_mode,
S_IRUGO | S_IWUSR,
show_tabletToolMode, store_tabletToolMode);
/***********************************************************************
* support routines for the 'xtilt' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
return sysfs_emit(buf, "disable\n");
} else {
return sysfs_emit(buf, "%d\n", aiptek->curSetting.xTilt);
}
}
static ssize_t
store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int x;
if (kstrtoint(buf, 10, &x)) {
size_t len = buf[count - 1] == '\n' ? count - 1 : count;
if (strncmp(buf, "disable", len))
return -EINVAL;
aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
} else {
if (x < AIPTEK_TILT_MIN || x > AIPTEK_TILT_MAX)
return -EINVAL;
aiptek->newSetting.xTilt = x;
}
return count;
}
static DEVICE_ATTR(xtilt,
S_IRUGO | S_IWUSR, show_tabletXtilt, store_tabletXtilt);
/***********************************************************************
* support routines for the 'ytilt' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
return sysfs_emit(buf, "disable\n");
} else {
return sysfs_emit(buf, "%d\n", aiptek->curSetting.yTilt);
}
}
static ssize_t
store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int y;
if (kstrtoint(buf, 10, &y)) {
size_t len = buf[count - 1] == '\n' ? count - 1 : count;
if (strncmp(buf, "disable", len))
return -EINVAL;
aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
} else {
if (y < AIPTEK_TILT_MIN || y > AIPTEK_TILT_MAX)
return -EINVAL;
aiptek->newSetting.yTilt = y;
}
return count;
}
static DEVICE_ATTR(ytilt,
S_IRUGO | S_IWUSR, show_tabletYtilt, store_tabletYtilt);
/***********************************************************************
* support routines for the 'jitter' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d\n", aiptek->curSetting.jitterDelay);
}
static ssize_t
store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int err, j;
err = kstrtoint(buf, 10, &j);
if (err)
return err;
aiptek->newSetting.jitterDelay = j;
return count;
}
static DEVICE_ATTR(jitter,
S_IRUGO | S_IWUSR,
show_tabletJitterDelay, store_tabletJitterDelay);
/***********************************************************************
* support routines for the 'delay' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d\n", aiptek->curSetting.programmableDelay);
}
static ssize_t
store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int err, d;
err = kstrtoint(buf, 10, &d);
if (err)
return err;
aiptek->newSetting.programmableDelay = d;
return count;
}
static DEVICE_ATTR(delay,
S_IRUGO | S_IWUSR,
show_tabletProgrammableDelay, store_tabletProgrammableDelay);
/***********************************************************************
* support routines for the 'event_count' file. Note that this file
* only displays current setting.
*/
static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%ld\n", aiptek->eventCount);
}
static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
/***********************************************************************
* support routines for the 'diagnostic' file. Note that this file
* only displays current setting.
*/
static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
char *retMsg;
switch (aiptek->diagnostic) {
case AIPTEK_DIAGNOSTIC_NA:
retMsg = "no errors\n";
break;
case AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE:
retMsg = "Error: receiving relative reports\n";
break;
case AIPTEK_DIAGNOSTIC_SENDING_ABSOLUTE_IN_RELATIVE:
retMsg = "Error: receiving absolute reports\n";
break;
case AIPTEK_DIAGNOSTIC_TOOL_DISALLOWED:
if (aiptek->curSetting.pointerMode ==
AIPTEK_POINTER_ONLY_MOUSE_MODE) {
retMsg = "Error: receiving stylus reports\n";
} else {
retMsg = "Error: receiving mouse reports\n";
}
break;
default:
return 0;
}
return sysfs_emit(buf, retMsg);
}
static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
/***********************************************************************
* support routines for the 'stylus_upper' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static struct aiptek_map stylus_button_map[] = {
{ "upper", AIPTEK_STYLUS_UPPER_BUTTON },
{ "lower", AIPTEK_STYLUS_LOWER_BUTTON },
{ NULL, AIPTEK_INVALID_VALUE }
};
static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(stylus_button_map,
aiptek->curSetting.stylusButtonUpper));
}
static ssize_t
store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_button = map_str_to_val(stylus_button_map, buf, count);
if (new_button == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.stylusButtonUpper = new_button;
return count;
}
static DEVICE_ATTR(stylus_upper,
S_IRUGO | S_IWUSR,
show_tabletStylusUpper, store_tabletStylusUpper);
/***********************************************************************
* support routines for the 'stylus_lower' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(stylus_button_map,
aiptek->curSetting.stylusButtonLower));
}
static ssize_t
store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_button = map_str_to_val(stylus_button_map, buf, count);
if (new_button == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.stylusButtonLower = new_button;
return count;
}
static DEVICE_ATTR(stylus_lower,
S_IRUGO | S_IWUSR,
show_tabletStylusLower, store_tabletStylusLower);
/***********************************************************************
* support routines for the 'mouse_left' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static struct aiptek_map mouse_button_map[] = {
{ "left", AIPTEK_MOUSE_LEFT_BUTTON },
{ "middle", AIPTEK_MOUSE_MIDDLE_BUTTON },
{ "right", AIPTEK_MOUSE_RIGHT_BUTTON },
{ NULL, AIPTEK_INVALID_VALUE }
};
static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(mouse_button_map,
aiptek->curSetting.mouseButtonLeft));
}
static ssize_t
store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_button = map_str_to_val(mouse_button_map, buf, count);
if (new_button == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.mouseButtonLeft = new_button;
return count;
}
static DEVICE_ATTR(mouse_left,
S_IRUGO | S_IWUSR,
show_tabletMouseLeft, store_tabletMouseLeft);
/***********************************************************************
* support routines for the 'mouse_middle' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(mouse_button_map,
aiptek->curSetting.mouseButtonMiddle));
}
static ssize_t
store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_button = map_str_to_val(mouse_button_map, buf, count);
if (new_button == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.mouseButtonMiddle = new_button;
return count;
}
static DEVICE_ATTR(mouse_middle,
S_IRUGO | S_IWUSR,
show_tabletMouseMiddle, store_tabletMouseMiddle);
/***********************************************************************
* support routines for the 'mouse_right' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", map_val_to_str(mouse_button_map,
aiptek->curSetting.mouseButtonRight));
}
static ssize_t
store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int new_button = map_str_to_val(mouse_button_map, buf, count);
if (new_button == AIPTEK_INVALID_VALUE)
return -EINVAL;
aiptek->newSetting.mouseButtonRight = new_button;
return count;
}
static DEVICE_ATTR(mouse_right,
S_IRUGO | S_IWUSR,
show_tabletMouseRight, store_tabletMouseRight);
/***********************************************************************
* support routines for the 'wheel' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
return sysfs_emit(buf, "disable\n");
} else {
return sysfs_emit(buf, "%d\n", aiptek->curSetting.wheel);
}
}
static ssize_t
store_tabletWheel(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int err, w;
err = kstrtoint(buf, 10, &w);
if (err)
return err;
aiptek->newSetting.wheel = w;
return count;
}
static DEVICE_ATTR(wheel,
S_IRUGO | S_IWUSR, show_tabletWheel, store_tabletWheel);
/***********************************************************************
* support routines for the 'execute' file. Note that this file
* both displays current setting and allows for setting changing.
*/
static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *attr, char *buf)
{
/* There is nothing useful to display, so a one-line manual
* is in order...
*/
return sysfs_emit(buf, "Write anything to this file to program your tablet.\n");
}
static ssize_t
store_tabletExecute(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
/* We do not care what you write to this file. Merely the action
* of writing to this file triggers a tablet reprogramming.
*/
memcpy(&aiptek->curSetting, &aiptek->newSetting,
sizeof(struct aiptek_settings));
if (aiptek_program_tablet(aiptek) < 0)
return -EIO;
return count;
}
static DEVICE_ATTR(execute,
S_IRUGO | S_IWUSR, show_tabletExecute, store_tabletExecute);
/***********************************************************************
* support routines for the 'odm_code' file. Note that this file
* only displays current setting.
*/
static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "0x%04x\n", aiptek->features.odmCode);
}
static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
/***********************************************************************
* support routines for the 'model_code' file. Note that this file
* only displays current setting.
*/
static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "0x%04x\n", aiptek->features.modelCode);
}
static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
/***********************************************************************
* support routines for the 'firmware_code' file. Note that this file
* only displays current setting.
*/
static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
return sysfs_emit(buf, "%04x\n", aiptek->features.firmwareCode);
}
static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
static struct attribute *aiptek_dev_attrs[] = {
&dev_attr_size.attr,
&dev_attr_pointer_mode.attr,
&dev_attr_coordinate_mode.attr,
&dev_attr_tool_mode.attr,
&dev_attr_xtilt.attr,
&dev_attr_ytilt.attr,
&dev_attr_jitter.attr,
&dev_attr_delay.attr,
&dev_attr_event_count.attr,
&dev_attr_diagnostic.attr,
&dev_attr_odm_code.attr,
&dev_attr_model_code.attr,
&dev_attr_firmware_code.attr,
&dev_attr_stylus_lower.attr,
&dev_attr_stylus_upper.attr,
&dev_attr_mouse_left.attr,
&dev_attr_mouse_middle.attr,
&dev_attr_mouse_right.attr,
&dev_attr_wheel.attr,
&dev_attr_execute.attr,
NULL
};
ATTRIBUTE_GROUPS(aiptek_dev);
/***********************************************************************
* This routine is called when a tablet has been identified. It basically
* sets up the tablet and the driver's internal structures.
*/
static int
aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *usbdev = interface_to_usbdev(intf);
struct usb_endpoint_descriptor *endpoint;
struct aiptek *aiptek;
struct input_dev *inputdev;
int i;
int speeds[] = { 0,
AIPTEK_PROGRAMMABLE_DELAY_50,
AIPTEK_PROGRAMMABLE_DELAY_400,
AIPTEK_PROGRAMMABLE_DELAY_25,
AIPTEK_PROGRAMMABLE_DELAY_100,
AIPTEK_PROGRAMMABLE_DELAY_200,
AIPTEK_PROGRAMMABLE_DELAY_300
};
int err = -ENOMEM;
/* programmableDelay is where the command-line specified
* delay is kept. We make it the first element of speeds[],
* so therefore, your override speed is tried first, then the
* remainder. Note that the default value of 400ms will be tried
* if you do not specify any command line parameter.
*/
speeds[0] = programmableDelay;
aiptek = kzalloc(sizeof(struct aiptek), GFP_KERNEL);
inputdev = input_allocate_device();
if (!aiptek || !inputdev) {
dev_warn(&intf->dev,
"cannot allocate memory or input device\n");
goto fail1;
}
aiptek->data = usb_alloc_coherent(usbdev, AIPTEK_PACKET_LENGTH,
GFP_KERNEL, &aiptek->data_dma);
if (!aiptek->data) {
dev_warn(&intf->dev, "cannot allocate usb buffer\n");
goto fail1;
}
aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!aiptek->urb) {
dev_warn(&intf->dev, "cannot allocate urb\n");
goto fail2;
}
aiptek->inputdev = inputdev;
aiptek->intf = intf;
aiptek->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
aiptek->inDelay = 0;
aiptek->endDelay = 0;
aiptek->previousJitterable = 0;
aiptek->lastMacro = -1;
/* Set up the curSettings struct. Said struct contains the current
* programmable parameters. The newSetting struct contains changes
* the user makes to the settings via the sysfs interface. Those
* changes are not "committed" to curSettings until the user
* writes to the sysfs/.../execute file.
*/
aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
aiptek->curSetting.jitterDelay = jitterDelay;
aiptek->curSetting.programmableDelay = programmableDelay;
/* Both structs should have equivalent settings
*/
aiptek->newSetting = aiptek->curSetting;
/* Determine the usb devices' physical path.
* Asketh not why we always pretend we're using "../input0",
* but I suspect this will have to be refactored one
* day if a single USB device can be a keyboard & a mouse
* & a tablet, and the inputX number actually will tell
* us something...
*/
usb_make_path(usbdev, aiptek->features.usbPath,
sizeof(aiptek->features.usbPath));
strlcat(aiptek->features.usbPath, "/input0",
sizeof(aiptek->features.usbPath));
/* Set up client data, pointers to open and close routines
* for the input device.
*/
inputdev->name = "Aiptek";
inputdev->phys = aiptek->features.usbPath;
usb_to_input_id(usbdev, &inputdev->id);
inputdev->dev.parent = &intf->dev;
input_set_drvdata(inputdev, aiptek);
inputdev->open = aiptek_open;
inputdev->close = aiptek_close;
/* Now program the capacities of the tablet, in terms of being
* an input device.
*/
for (i = 0; i < ARRAY_SIZE(eventTypes); ++i)
__set_bit(eventTypes[i], inputdev->evbit);
for (i = 0; i < ARRAY_SIZE(absEvents); ++i)
__set_bit(absEvents[i], inputdev->absbit);
for (i = 0; i < ARRAY_SIZE(relEvents); ++i)
__set_bit(relEvents[i], inputdev->relbit);
__set_bit(MSC_SERIAL, inputdev->mscbit);
/* Set up key and button codes */
for (i = 0; i < ARRAY_SIZE(buttonEvents); ++i)
__set_bit(buttonEvents[i], inputdev->keybit);
for (i = 0; i < ARRAY_SIZE(macroKeyEvents); ++i)
__set_bit(macroKeyEvents[i], inputdev->keybit);
/*
* Program the input device coordinate capacities. We do not yet
* know what maximum X, Y, and Z values are, so we're putting fake
* values in. Later, we'll ask the tablet to put in the correct
* values.
*/
input_set_abs_params(inputdev, ABS_X, 0, 2999, 0, 0);
input_set_abs_params(inputdev, ABS_Y, 0, 2249, 0, 0);
input_set_abs_params(inputdev, ABS_PRESSURE, 0, 511, 0, 0);
input_set_abs_params(inputdev, ABS_TILT_X, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
input_set_abs_params(inputdev, ABS_TILT_Y, AIPTEK_TILT_MIN, AIPTEK_TILT_MAX, 0, 0);
input_set_abs_params(inputdev, ABS_WHEEL, AIPTEK_WHEEL_MIN, AIPTEK_WHEEL_MAX - 1, 0, 0);
err = usb_find_common_endpoints(intf->cur_altsetting,
NULL, NULL, &endpoint, NULL);
if (err) {
dev_err(&intf->dev,
"interface has no int in endpoints, but must have minimum 1\n");
goto fail3;
}
/* Go set up our URB, which is called when the tablet receives
* input.
*/
usb_fill_int_urb(aiptek->urb,
usbdev,
usb_rcvintpipe(usbdev,
endpoint->bEndpointAddress),
aiptek->data, 8, aiptek_irq, aiptek,
endpoint->bInterval);
aiptek->urb->transfer_dma = aiptek->data_dma;
aiptek->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
/* Program the tablet. This sets the tablet up in the mode
* specified in newSetting, and also queries the tablet's
* physical capacities.
*
* Sanity check: if a tablet doesn't like the slow programmatic
* delay, we often get sizes of 0x0. Let's use that as an indicator
* to try faster delays, up to 25 ms. If that logic fails, well, you'll
* have to explain to us how your tablet thinks it's 0x0, and yet that's
* not an error :-)
*/
for (i = 0; i < ARRAY_SIZE(speeds); ++i) {
aiptek->curSetting.programmableDelay = speeds[i];
(void)aiptek_program_tablet(aiptek);
if (input_abs_get_max(aiptek->inputdev, ABS_X) > 0) {
dev_info(&intf->dev,
"Aiptek using %d ms programming speed\n",
aiptek->curSetting.programmableDelay);
break;
}
}
/* Murphy says that some day someone will have a tablet that fails the
above test. That's you, Frederic Rodrigo */
if (i == ARRAY_SIZE(speeds)) {
dev_info(&intf->dev,
"Aiptek tried all speeds, no sane response\n");
err = -EINVAL;
goto fail3;
}
/* Associate this driver's struct with the usb interface.
*/
usb_set_intfdata(intf, aiptek);
/* Register the tablet as an Input Device
*/
err = input_register_device(aiptek->inputdev);
if (err) {
dev_warn(&intf->dev,
"input_register_device returned err: %d\n", err);
goto fail3;
}
return 0;
fail3: usb_free_urb(aiptek->urb);
fail2: usb_free_coherent(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
aiptek->data_dma);
fail1: usb_set_intfdata(intf, NULL);
input_free_device(inputdev);
kfree(aiptek);
return err;
}
/***********************************************************************
* Deal with tablet disconnecting from the system.
*/
static void aiptek_disconnect(struct usb_interface *intf)
{
struct aiptek *aiptek = usb_get_intfdata(intf);
/* Disassociate driver's struct with usb interface
*/
usb_set_intfdata(intf, NULL);
if (aiptek != NULL) {
/* Free & unhook everything from the system.
*/
usb_kill_urb(aiptek->urb);
input_unregister_device(aiptek->inputdev);
usb_free_urb(aiptek->urb);
usb_free_coherent(interface_to_usbdev(intf),
AIPTEK_PACKET_LENGTH,
aiptek->data, aiptek->data_dma);
kfree(aiptek);
}
}
static struct usb_driver aiptek_driver = {
.name = "aiptek",
.probe = aiptek_probe,
.disconnect = aiptek_disconnect,
.id_table = aiptek_ids,
.dev_groups = aiptek_dev_groups,
};
module_usb_driver(aiptek_driver);
MODULE_AUTHOR("Bryan W. Headley/Chris Atenasio/Cedric Brun/Rene van Paassen");
MODULE_DESCRIPTION("Aiptek HyperPen USB Tablet Driver");
MODULE_LICENSE("GPL");
module_param(programmableDelay, int, 0);
MODULE_PARM_DESC(programmableDelay, "delay used during tablet programming");
module_param(jitterDelay, int, 0);
MODULE_PARM_DESC(jitterDelay, "stylus/mouse settlement delay");