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linux/drivers/usb/input/aiptek.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

2236 lines
69 KiB
C
Raw Blame History

/*
* 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/init.h>
#include <linux/usb/input.h>
#include <linux/sched.h>
#include <asm/uaccess.h>
#include <asm/unaligned.h>
/*
* Version Information
*/
#define DRIVER_VERSION "v1.5 (May-15-2004)"
#define DRIVER_AUTHOR "Bryan W. Headley/Chris Atenasio"
#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 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 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 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
*
* 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_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 TOOL_BUTTON_FIRED_BIT is
* not set, we'll send one instance of AIPTEK_TOOL_BUTTON_xxx.
*
* Whenever the user resets the value, TOOL_BUTTON_FIRED_BIT will
* get reset.
*/
#define TOOL_BUTTON(x) ((x) & 0x14f)
#define TOOL_BUTTON_FIRED(x) ((x) & 0x200)
#define TOOL_BUTTON_FIRED_BIT 0x200
/* toolMode codes
*/
#define AIPTEK_TOOL_BUTTON_PEN_MODE BTN_TOOL_PEN
#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 0x01
#define AIPTEK_MOUSE_RIGHT_BUTTON 0x02
#define AIPTEK_MOUSE_MIDDLE_BUTTON 0x04
/* 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 */
char inputPath[64 + 1]; /* input device 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_device *usbdev; /* usb device 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 */
unsigned char *data; /* incoming packet data */
};
/*
* 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
};
/***********************************************************************
* Relative reports deliver values in 2's complement format to
* deal with negative offsets.
*/
static int aiptek_convert_from_2s_complement(unsigned char c)
{
int ret;
unsigned char b = c;
int negate = 0;
if ((b & 0x80) != 0) {
b = ~b;
b--;
negate = 1;
}
ret = b;
ret = (negate == 1) ? -ret : ret;
return ret;
}
/***********************************************************************
* 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.
*
* 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;
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 */
dbg("%s - urb shutting down with status: %d",
__FUNCTION__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d",
__FUNCTION__, 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 = aiptek_convert_from_2s_complement(data[2]);
y = aiptek_convert_from_2s_complement(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[5] & 0x07;
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;
input_report_key(inputdev, BTN_LEFT, left);
input_report_key(inputdev, BTN_MIDDLE, middle);
input_report_key(inputdev, BTN_RIGHT, right);
input_report_rel(inputdev, REL_X, x);
input_report_rel(inputdev, REL_Y, y);
input_report_rel(inputdev, REL_MISC, 1 | AIPTEK_REPORT_TOOL_UNKNOWN);
/* 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;
}
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 = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
z = le16_to_cpu(get_unaligned((__le16 *) (data + 6)));
p = (data[5] & 0x01) != 0 ? 1 : 0;
dv = (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 we've not already sent a tool_button_?? code, do
* so now. Then set FIRED_BIT so it won't be resent unless
* the user forces FIRED_BIT off.
*/
if (TOOL_BUTTON_FIRED
(aiptek->curSetting.toolMode) == 0) {
input_report_key(inputdev,
TOOL_BUTTON(aiptek->curSetting.toolMode),
1);
aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
}
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);
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 = le16_to_cpu(get_unaligned((__le16 *) (data + 1)));
y = le16_to_cpu(get_unaligned((__le16 *) (data + 3)));
jitterable = data[5] & 0x1c;
p = (data[5] & 0x01) != 0 ? 1 : 0;
dv = (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 we've not already sent a tool_button_?? code, do
* so now. Then set FIRED_BIT so it won't be resent unless
* the user forces FIRED_BIT off.
*/
if (TOOL_BUTTON_FIRED
(aiptek->curSetting.toolMode) == 0) {
input_report_key(inputdev,
TOOL_BUTTON(aiptek->curSetting.toolMode),
1);
aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
}
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_rel(inputdev, REL_MISC, p | AIPTEK_REPORT_TOOL_MOUSE);
input_sync(inputdev);
}
}
}
/* Report 4s come from the macro keys when pressed by stylus
*/
else if (data[0] == 4) {
jitterable = data[1] & 0x18;
p = (data[1] & 0x01) != 0 ? 1 : 0;
dv = (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 = data[3];
z = le16_to_cpu(get_unaligned((__le16 *) (data + 4)));
if (dv != 0) {
/* If we've not already sent a tool_button_?? code, do
* so now. Then set FIRED_BIT so it won't be resent unless
* the user forces FIRED_BIT off.
*/
if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
input_report_key(inputdev,
TOOL_BUTTON(aiptek->curSetting.toolMode),
1);
aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
}
if (p != 0) {
input_report_key(inputdev, BTN_TOUCH, tip);
input_report_key(inputdev, BTN_STYLUS, bs);
input_report_key(inputdev, BTN_STYLUS2, pck);
input_report_abs(inputdev, ABS_PRESSURE, z);
}
/* For safety, we're sending key 'break' codes for the
* neighboring macro keys.
*/
if (macro > 0) {
input_report_key(inputdev,
macroKeyEvents[macro - 1], 0);
}
if (macro < 25) {
input_report_key(inputdev,
macroKeyEvents[macro + 1], 0);
}
input_report_key(inputdev, macroKeyEvents[macro], p);
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;
p = (data[1] & 0x01) != 0 ? 1 : 0;
dv = (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 = data[3];
if (dv != 0) {
/* If we've not already sent a tool_button_?? code, do
* so now. Then set FIRED_BIT so it won't be resent unless
* the user forces FIRED_BIT off.
*/
if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
input_report_key(inputdev,
TOOL_BUTTON(aiptek->curSetting.toolMode),
1);
aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
}
if (p != 0) {
input_report_key(inputdev, BTN_LEFT, left);
input_report_key(inputdev, BTN_MIDDLE, middle);
input_report_key(inputdev, BTN_RIGHT, right);
}
/* For safety, we're sending key 'break' codes for the
* neighboring macro keys.
*/
if (macro > 0) {
input_report_key(inputdev,
macroKeyEvents[macro - 1], 0);
}
if (macro < 25) {
input_report_key(inputdev,
macroKeyEvents[macro + 1], 0);
}
input_report_key(inputdev, macroKeyEvents[macro], 1);
input_report_rel(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 = le16_to_cpu(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 we've not already sent a tool_button_?? code, do
* so now. Then set FIRED_BIT so it won't be resent unless
* the user forces FIRED_BIT off.
*/
if (TOOL_BUTTON_FIRED(aiptek->curSetting.toolMode) == 0) {
input_report_key(inputdev,
TOOL_BUTTON(aiptek->curSetting.
toolMode), 1);
aiptek->curSetting.toolMode |= TOOL_BUTTON_FIRED_BIT;
}
input_report_key(inputdev, macroKeyEvents[macro], 1);
input_report_abs(inputdev, ABS_MISC,
1 | AIPTEK_REPORT_TOOL_UNKNOWN);
input_sync(inputdev);
} else {
dbg("Unknown report %d", 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) {
err("%s - usb_submit_urb failed with result %d",
__FUNCTION__, 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)},
{}
};
MODULE_DEVICE_TABLE(usb, aiptek_ids);
/***********************************************************************
* Open an instance of the tablet driver.
*/
static int aiptek_open(struct input_dev *inputdev)
{
struct aiptek *aiptek = inputdev->private;
aiptek->urb->dev = aiptek->usbdev;
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 = inputdev->private;
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)
{
return usb_control_msg(aiptek->usbdev,
usb_sndctrlpipe(aiptek->usbdev, 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)
{
return usb_control_msg(aiptek->usbdev,
usb_rcvctrlpipe(aiptek->usbdev, 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) {
dbg("aiptek_program: failed, tried to send: 0x%02x 0x%02x",
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 ((ret =
aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
dbg("aiptek_query failed: returned 0x%02x 0x%02x 0x%02x",
buf[0], buf[1], buf[2]);
ret = -EIO;
} else {
ret = le16_to_cpu(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;
aiptek->inputdev->absmin[ABS_X] = 0;
aiptek->inputdev->absmax[ABS_X] = ret - 1;
/* Query getYextension */
if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
return ret;
aiptek->inputdev->absmin[ABS_Y] = 0;
aiptek->inputdev->absmax[ABS_Y] = ret - 1;
/* Query getPressureLevels */
if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
return ret;
aiptek->inputdev->absmin[ABS_PRESSURE] = 0;
aiptek->inputdev->absmax[ABS_PRESSURE] = ret - 1;
/* 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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "%dx%d\n",
aiptek->inputdev->absmax[ABS_X] + 1,
aiptek->inputdev->absmax[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 'product_id' file
*/
static ssize_t show_tabletProductId(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "0x%04x\n",
aiptek->inputdev->id.product);
}
static DEVICE_ATTR(product_id, S_IRUGO, show_tabletProductId, NULL);
/***********************************************************************
* support routines for the 'vendor_id' file
*/
static ssize_t show_tabletVendorId(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->inputdev->id.vendor);
}
static DEVICE_ATTR(vendor_id, S_IRUGO, show_tabletVendorId, NULL);
/***********************************************************************
* support routines for the 'vendor' file
*/
static ssize_t show_tabletManufacturer(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int retval;
if (aiptek == NULL)
return 0;
retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->manufacturer);
return retval;
}
static DEVICE_ATTR(vendor, S_IRUGO, show_tabletManufacturer, NULL);
/***********************************************************************
* support routines for the 'product' file
*/
static ssize_t show_tabletProduct(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
int retval;
if (aiptek == NULL)
return 0;
retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->product);
return retval;
}
static DEVICE_ATTR(product, S_IRUGO, show_tabletProduct, NULL);
/***********************************************************************
* support routines for the 'pointer_mode' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.pointerMode) {
case AIPTEK_POINTER_ONLY_STYLUS_MODE:
s = "stylus";
break;
case AIPTEK_POINTER_ONLY_MOUSE_MODE:
s = "mouse";
break;
case AIPTEK_POINTER_EITHER_MODE:
s = "either";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "stylus") == 0) {
aiptek->newSetting.pointerMode =
AIPTEK_POINTER_ONLY_STYLUS_MODE;
} else if (strcmp(buf, "mouse") == 0) {
aiptek->newSetting.pointerMode = AIPTEK_POINTER_ONLY_MOUSE_MODE;
} else if (strcmp(buf, "either") == 0) {
aiptek->newSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
}
return count;
}
static DEVICE_ATTR(pointer_mode,
S_IRUGO | S_IWUGO,
show_tabletPointerMode, store_tabletPointerMode);
/***********************************************************************
* support routines for the 'coordinate_mode' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.coordinateMode) {
case AIPTEK_COORDINATE_ABSOLUTE_MODE:
s = "absolute";
break;
case AIPTEK_COORDINATE_RELATIVE_MODE:
s = "relative";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "absolute") == 0) {
aiptek->newSetting.pointerMode =
AIPTEK_COORDINATE_ABSOLUTE_MODE;
} else if (strcmp(buf, "relative") == 0) {
aiptek->newSetting.pointerMode =
AIPTEK_COORDINATE_RELATIVE_MODE;
}
return count;
}
static DEVICE_ATTR(coordinate_mode,
S_IRUGO | S_IWUGO,
show_tabletCoordinateMode, store_tabletCoordinateMode);
/***********************************************************************
* support routines for the 'tool_mode' file. Note that this file
* both displays current setting and allows reprogramming.
*/
static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
char *s;
if (aiptek == NULL)
return 0;
switch (TOOL_BUTTON(aiptek->curSetting.toolMode)) {
case AIPTEK_TOOL_BUTTON_MOUSE_MODE:
s = "mouse";
break;
case AIPTEK_TOOL_BUTTON_ERASER_MODE:
s = "eraser";
break;
case AIPTEK_TOOL_BUTTON_PENCIL_MODE:
s = "pencil";
break;
case AIPTEK_TOOL_BUTTON_PEN_MODE:
s = "pen";
break;
case AIPTEK_TOOL_BUTTON_BRUSH_MODE:
s = "brush";
break;
case AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE:
s = "airbrush";
break;
case AIPTEK_TOOL_BUTTON_LENS_MODE:
s = "lens";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "mouse") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_MOUSE_MODE;
} else if (strcmp(buf, "eraser") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_ERASER_MODE;
} else if (strcmp(buf, "pencil") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PENCIL_MODE;
} else if (strcmp(buf, "pen") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
} else if (strcmp(buf, "brush") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_BRUSH_MODE;
} else if (strcmp(buf, "airbrush") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE;
} else if (strcmp(buf, "lens") == 0) {
aiptek->newSetting.toolMode = AIPTEK_TOOL_BUTTON_LENS_MODE;
}
return count;
}
static DEVICE_ATTR(tool_mode,
S_IRUGO | S_IWUGO,
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 == NULL)
return 0;
if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
return snprintf(buf, PAGE_SIZE, "disable\n");
} else {
return snprintf(buf, PAGE_SIZE, "%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 (aiptek == NULL)
return 0;
if (strcmp(buf, "disable") == 0) {
aiptek->newSetting.xTilt = AIPTEK_TILT_DISABLE;
} else {
x = (int)simple_strtol(buf, NULL, 10);
if (x >= AIPTEK_TILT_MIN && x <= AIPTEK_TILT_MAX) {
aiptek->newSetting.xTilt = x;
}
}
return count;
}
static DEVICE_ATTR(xtilt,
S_IRUGO | S_IWUGO, 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 == NULL)
return 0;
if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
return snprintf(buf, PAGE_SIZE, "disable\n");
} else {
return snprintf(buf, PAGE_SIZE, "%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 (aiptek == NULL)
return 0;
if (strcmp(buf, "disable") == 0) {
aiptek->newSetting.yTilt = AIPTEK_TILT_DISABLE;
} else {
y = (int)simple_strtol(buf, NULL, 10);
if (y >= AIPTEK_TILT_MIN && y <= AIPTEK_TILT_MAX) {
aiptek->newSetting.yTilt = y;
}
}
return count;
}
static DEVICE_ATTR(ytilt,
S_IRUGO | S_IWUGO, 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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "%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);
if (aiptek == NULL)
return 0;
aiptek->newSetting.jitterDelay = (int)simple_strtol(buf, NULL, 10);
return count;
}
static DEVICE_ATTR(jitter,
S_IRUGO | S_IWUGO,
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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "%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);
if (aiptek == NULL)
return 0;
aiptek->newSetting.programmableDelay = (int)simple_strtol(buf, NULL, 10);
return count;
}
static DEVICE_ATTR(delay,
S_IRUGO | S_IWUGO,
show_tabletProgrammableDelay, store_tabletProgrammableDelay);
/***********************************************************************
* support routines for the 'input_path' file. Note that this file
* only displays current setting.
*/
static ssize_t show_tabletInputDevice(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "/dev/input/%s\n",
aiptek->features.inputPath);
}
static DEVICE_ATTR(input_path, S_IRUGO, show_tabletInputDevice, NULL);
/***********************************************************************
* 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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "%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;
if (aiptek == NULL)
return 0;
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 snprintf(buf, PAGE_SIZE, 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 ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.stylusButtonUpper) {
case AIPTEK_STYLUS_UPPER_BUTTON:
s = "upper";
break;
case AIPTEK_STYLUS_LOWER_BUTTON:
s = "lower";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "upper") == 0) {
aiptek->newSetting.stylusButtonUpper =
AIPTEK_STYLUS_UPPER_BUTTON;
} else if (strcmp(buf, "lower") == 0) {
aiptek->newSetting.stylusButtonUpper =
AIPTEK_STYLUS_LOWER_BUTTON;
}
return count;
}
static DEVICE_ATTR(stylus_upper,
S_IRUGO | S_IWUGO,
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);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.stylusButtonLower) {
case AIPTEK_STYLUS_UPPER_BUTTON:
s = "upper";
break;
case AIPTEK_STYLUS_LOWER_BUTTON:
s = "lower";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "upper") == 0) {
aiptek->newSetting.stylusButtonLower =
AIPTEK_STYLUS_UPPER_BUTTON;
} else if (strcmp(buf, "lower") == 0) {
aiptek->newSetting.stylusButtonLower =
AIPTEK_STYLUS_LOWER_BUTTON;
}
return count;
}
static DEVICE_ATTR(stylus_lower,
S_IRUGO | S_IWUGO,
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 ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute *attr, char *buf)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.mouseButtonLeft) {
case AIPTEK_MOUSE_LEFT_BUTTON:
s = "left";
break;
case AIPTEK_MOUSE_MIDDLE_BUTTON:
s = "middle";
break;
case AIPTEK_MOUSE_RIGHT_BUTTON:
s = "right";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "left") == 0) {
aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
} else if (strcmp(buf, "middle") == 0) {
aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_MIDDLE_BUTTON;
} else if (strcmp(buf, "right") == 0) {
aiptek->newSetting.mouseButtonLeft = AIPTEK_MOUSE_RIGHT_BUTTON;
}
return count;
}
static DEVICE_ATTR(mouse_left,
S_IRUGO | S_IWUGO,
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);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.mouseButtonMiddle) {
case AIPTEK_MOUSE_LEFT_BUTTON:
s = "left";
break;
case AIPTEK_MOUSE_MIDDLE_BUTTON:
s = "middle";
break;
case AIPTEK_MOUSE_RIGHT_BUTTON:
s = "right";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "left") == 0) {
aiptek->newSetting.mouseButtonMiddle = AIPTEK_MOUSE_LEFT_BUTTON;
} else if (strcmp(buf, "middle") == 0) {
aiptek->newSetting.mouseButtonMiddle =
AIPTEK_MOUSE_MIDDLE_BUTTON;
} else if (strcmp(buf, "right") == 0) {
aiptek->newSetting.mouseButtonMiddle =
AIPTEK_MOUSE_RIGHT_BUTTON;
}
return count;
}
static DEVICE_ATTR(mouse_middle,
S_IRUGO | S_IWUGO,
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);
char *s;
if (aiptek == NULL)
return 0;
switch (aiptek->curSetting.mouseButtonRight) {
case AIPTEK_MOUSE_LEFT_BUTTON:
s = "left";
break;
case AIPTEK_MOUSE_MIDDLE_BUTTON:
s = "middle";
break;
case AIPTEK_MOUSE_RIGHT_BUTTON:
s = "right";
break;
default:
s = "unknown";
break;
}
return snprintf(buf, PAGE_SIZE, "%s\n", s);
}
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);
if (aiptek == NULL)
return 0;
if (strcmp(buf, "left") == 0) {
aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_LEFT_BUTTON;
} else if (strcmp(buf, "middle") == 0) {
aiptek->newSetting.mouseButtonRight =
AIPTEK_MOUSE_MIDDLE_BUTTON;
} else if (strcmp(buf, "right") == 0) {
aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
}
return count;
}
static DEVICE_ATTR(mouse_right,
S_IRUGO | S_IWUGO,
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 == NULL)
return 0;
if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
return snprintf(buf, PAGE_SIZE, "disable\n");
} else {
return snprintf(buf, PAGE_SIZE, "%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);
if (aiptek == NULL)
return 0;
aiptek->newSetting.wheel = (int)simple_strtol(buf, NULL, 10);
return count;
}
static DEVICE_ATTR(wheel,
S_IRUGO | S_IWUGO, 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)
{
struct aiptek *aiptek = dev_get_drvdata(dev);
if (aiptek == NULL)
return 0;
/* There is nothing useful to display, so a one-line manual
* is in order...
*/
return snprintf(buf, PAGE_SIZE,
"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);
if (aiptek == NULL)
return 0;
/* 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_IWUGO, 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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "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);
if (aiptek == NULL)
return 0;
return snprintf(buf, PAGE_SIZE, "%04x\n",
aiptek->features.firmwareCode);
}
static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
/***********************************************************************
* This routine removes all existing sysfs files managed by this device
* driver.
*/
static void aiptek_delete_files(struct device *dev)
{
device_remove_file(dev, &dev_attr_size);
device_remove_file(dev, &dev_attr_product_id);
device_remove_file(dev, &dev_attr_vendor_id);
device_remove_file(dev, &dev_attr_vendor);
device_remove_file(dev, &dev_attr_product);
device_remove_file(dev, &dev_attr_pointer_mode);
device_remove_file(dev, &dev_attr_coordinate_mode);
device_remove_file(dev, &dev_attr_tool_mode);
device_remove_file(dev, &dev_attr_xtilt);
device_remove_file(dev, &dev_attr_ytilt);
device_remove_file(dev, &dev_attr_jitter);
device_remove_file(dev, &dev_attr_delay);
device_remove_file(dev, &dev_attr_input_path);
device_remove_file(dev, &dev_attr_event_count);
device_remove_file(dev, &dev_attr_diagnostic);
device_remove_file(dev, &dev_attr_odm_code);
device_remove_file(dev, &dev_attr_model_code);
device_remove_file(dev, &dev_attr_firmware_code);
device_remove_file(dev, &dev_attr_stylus_lower);
device_remove_file(dev, &dev_attr_stylus_upper);
device_remove_file(dev, &dev_attr_mouse_left);
device_remove_file(dev, &dev_attr_mouse_middle);
device_remove_file(dev, &dev_attr_mouse_right);
device_remove_file(dev, &dev_attr_wheel);
device_remove_file(dev, &dev_attr_execute);
}
/***********************************************************************
* This routine creates the sysfs files managed by this device
* driver.
*/
static int aiptek_add_files(struct device *dev)
{
int ret;
if ((ret = device_create_file(dev, &dev_attr_size)) ||
(ret = device_create_file(dev, &dev_attr_product_id)) ||
(ret = device_create_file(dev, &dev_attr_vendor_id)) ||
(ret = device_create_file(dev, &dev_attr_vendor)) ||
(ret = device_create_file(dev, &dev_attr_product)) ||
(ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
(ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
(ret = device_create_file(dev, &dev_attr_tool_mode)) ||
(ret = device_create_file(dev, &dev_attr_xtilt)) ||
(ret = device_create_file(dev, &dev_attr_ytilt)) ||
(ret = device_create_file(dev, &dev_attr_jitter)) ||
(ret = device_create_file(dev, &dev_attr_delay)) ||
(ret = device_create_file(dev, &dev_attr_input_path)) ||
(ret = device_create_file(dev, &dev_attr_event_count)) ||
(ret = device_create_file(dev, &dev_attr_diagnostic)) ||
(ret = device_create_file(dev, &dev_attr_odm_code)) ||
(ret = device_create_file(dev, &dev_attr_model_code)) ||
(ret = device_create_file(dev, &dev_attr_firmware_code)) ||
(ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
(ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
(ret = device_create_file(dev, &dev_attr_mouse_left)) ||
(ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
(ret = device_create_file(dev, &dev_attr_mouse_right)) ||
(ret = device_create_file(dev, &dev_attr_wheel)) ||
(ret = device_create_file(dev, &dev_attr_execute))) {
err("aiptek: killing own sysfs device files\n");
aiptek_delete_files(dev);
}
return ret;
}
/***********************************************************************
* 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;
struct input_handle *inputhandle;
struct list_head *node, *next;
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
};
/* 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)
goto fail1;
aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
SLAB_ATOMIC, &aiptek->data_dma);
if (!aiptek->data)
goto fail1;
aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!aiptek->urb)
goto fail2;
aiptek->inputdev = inputdev;
aiptek->usbdev = usbdev;
aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
aiptek->inDelay = 0;
aiptek->endDelay = 0;
aiptek->previousJitterable = 0;
/* 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->cdev.dev = &intf->dev;
inputdev->private = aiptek;
inputdev->open = aiptek_open;
inputdev->close = aiptek_close;
/* Now program the capacities of the tablet, in terms of being
* an input device.
*/
inputdev->evbit[0] |= BIT(EV_KEY)
| BIT(EV_ABS)
| BIT(EV_REL)
| BIT(EV_MSC);
inputdev->absbit[0] |= BIT(ABS_MISC);
inputdev->relbit[0] |=
(BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL) | BIT(REL_MISC));
inputdev->keybit[LONG(BTN_LEFT)] |=
(BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE));
inputdev->keybit[LONG(BTN_DIGI)] |=
(BIT(BTN_TOOL_PEN) |
BIT(BTN_TOOL_RUBBER) |
BIT(BTN_TOOL_PENCIL) |
BIT(BTN_TOOL_AIRBRUSH) |
BIT(BTN_TOOL_BRUSH) |
BIT(BTN_TOOL_MOUSE) |
BIT(BTN_TOOL_LENS) |
BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2));
inputdev->mscbit[0] = BIT(MSC_SERIAL);
/* Programming the tablet macro keys needs to be done with a for loop
* as the keycodes are discontiguous.
*/
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);
endpoint = &intf->altsetting[0].endpoint[0].desc;
/* Go set up our URB, which is called when the tablet receives
* input.
*/
usb_fill_int_urb(aiptek->urb,
aiptek->usbdev,
usb_rcvintpipe(aiptek->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 (aiptek->inputdev->absmax[ABS_X] > 0) {
info("input: Aiptek using %d ms programming speed\n",
aiptek->curSetting.programmableDelay);
break;
}
}
/* Register the tablet as an Input Device
*/
input_register_device(aiptek->inputdev);
/* We now will look for the evdev device which is mapped to
* the tablet. The partial name is kept in the link list of
* input_handles associated with this input device.
* What identifies an evdev input_handler is that it begins
* with 'event', continues with a digit, and that in turn
* is mapped to input/eventN.
*/
list_for_each_safe(node, next, &inputdev->h_list) {
inputhandle = to_handle(node);
if (strncmp(inputhandle->name, "event", 5) == 0) {
strcpy(aiptek->features.inputPath, inputhandle->name);
break;
}
}
/* Associate this driver's struct with the usb interface.
*/
usb_set_intfdata(intf, aiptek);
/* Set up the sysfs files
*/
aiptek_add_files(&intf->dev);
/* Make sure the evdev module is loaded. Assuming evdev IS a module :-)
*/
if (request_module("evdev") != 0)
info("aiptek: error loading 'evdev' module");
return 0;
fail2: usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
aiptek->data_dma);
fail1: input_free_device(inputdev);
kfree(aiptek);
return -ENOMEM;
}
/* Forward declaration */
static void aiptek_disconnect(struct usb_interface *intf);
static struct usb_driver aiptek_driver = {
.name = "aiptek",
.probe = aiptek_probe,
.disconnect = aiptek_disconnect,
.id_table = aiptek_ids,
};
/***********************************************************************
* 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);
aiptek_delete_files(&intf->dev);
usb_free_urb(aiptek->urb);
usb_buffer_free(interface_to_usbdev(intf),
AIPTEK_PACKET_LENGTH,
aiptek->data, aiptek->data_dma);
kfree(aiptek);
}
}
static int __init aiptek_init(void)
{
int result = usb_register(&aiptek_driver);
if (result == 0) {
info(DRIVER_VERSION ": " DRIVER_AUTHOR);
info(DRIVER_DESC);
}
return result;
}
static void __exit aiptek_exit(void)
{
usb_deregister(&aiptek_driver);
}
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
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");
module_init(aiptek_init);
module_exit(aiptek_exit);
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