target/linux/ep93xx/patches-2.6.30/006-ep93xx-touchscreen.patch

   1 Index: linux-2.6.30.9/drivers/input/touchscreen/Kconfig
   2 ===================================================================
   3 --- linux-2.6.30.9.orig/drivers/input/touchscreen/Kconfig       2009-11-24 21:00:18.000000000 +0100
   4 +++ linux-2.6.30.9/drivers/input/touchscreen/Kconfig    2009-11-24 21:00:45.000000000 +0100
   5 @@ -161,6 +161,10 @@
   6           module will be called wacom_w8001.
   7
   8
   9 +config TOUCHSCREEN_EP93XX
  10 +       tristate "EP93xx Touchscreen"
  11 +       depends on ARM && INPUT && ARCH_EP93XX
  12 +
  13  config TOUCHSCREEN_MTOUCH
  14         tristate "MicroTouch serial touchscreens"
  15         select SERIO
  16 Index: linux-2.6.30.9/drivers/input/touchscreen/Makefile
  17 ===================================================================
  18 --- linux-2.6.30.9.orig/drivers/input/touchscreen/Makefile      2009-11-24 21:00:18.000000000 +0100
  19 +++ linux-2.6.30.9/drivers/input/touchscreen/Makefile   2009-11-24 21:00:45.000000000 +0100
  20 @@ -14,6 +14,7 @@
  21  obj-$(CONFIG_TOUCHSCREEN_CORGI)                += corgi_ts.o
  22  obj-$(CONFIG_TOUCHSCREEN_GUNZE)                += gunze.o
  23  obj-$(CONFIG_TOUCHSCREEN_ELO)          += elo.o
  24 +obj-$(CONFIG_TOUCHSCREEN_EP93XX)       += ep93xx_ts.o
  25  obj-$(CONFIG_TOUCHSCREEN_FUJITSU)      += fujitsu_ts.o
  26  obj-$(CONFIG_TOUCHSCREEN_INEXIO)       += inexio.o
  27  obj-$(CONFIG_TOUCHSCREEN_MIGOR)                += migor_ts.o
  28 Index: linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.c
  29 ===================================================================
  30 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
  31 +++ linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.c        2009-11-24 21:09:48.000000000 +0100
  32 @@ -0,0 +1,1117 @@
  33 +/*
  34 + *  linux/drivers/input/touchscreen/ep93xx_ts.c
  35 + *
  36 + *  Copyright (C) 2003-2004 Cirrus Corp.
  37 + *
  38 + * This program is free software; you can redistribute it and/or modify
  39 + * it under the terms of the GNU General Public License version 2 as
  40 + * published by the Free Software Foundation.
  41 + */
  42 +
  43 +#include <linux/module.h>
  44 +#include <linux/types.h>
  45 +#include <linux/delay.h>
  46 +#include <linux/wait.h>
  47 +#include <linux/fs.h>
  48 +#include <linux/sched.h>
  49 +#include <linux/poll.h>
  50 +#include <linux/miscdevice.h>
  51 +#include <linux/init.h>
  52 +#include <linux/compiler.h>
  53 +#include <linux/timer.h>
  54 +#include <linux/interrupt.h>
  55 +#include <linux/syscalls.h>
  56 +#include <linux/input.h>
  57 +#include <asm/irq.h>
  58 +#include <mach/hardware.h>
  59 +#include <asm/io.h>
  60 +
  61 +#define TOUCH_OFFSET            0x100000
  62 +#define TOUCH_BASE              (EP93XX_APB_VIRT_BASE|TOUCH_OFFSET)
  63 +#define TSSetup                 (TOUCH_BASE+0x00) /* R/W touchscreen controller setup control register.     */
  64 +#define TSXYMaxMin              (TOUCH_BASE+0x04) /* R/W touchscreen controller max/min register.           */
  65 +#define TSXYResult              (TOUCH_BASE+0x08) /* R   touchscreen controller result register.            */
  66 +#define TSDischarge             (TOUCH_BASE+0x0C) /* LOCKED R/W touchscreen Switch Matrix control register. */
  67 +#define TSXSample               (TOUCH_BASE+0x10) /* LOCKED R/W touchscreen Switch Matrix control register. */
  68 +#define TSYSample               (TOUCH_BASE+0x14) /* LOCKED R/W touchscreen Switch Matrix control register. */
  69 +#define TSDirect                (TOUCH_BASE+0x18) /* LOCKED R/W touchscreen Switch Matrix control register. */
  70 +#define TSDetect                (TOUCH_BASE+0x1C) /* LOCKED R/W touchscreen Switch Matrix control register. */
  71 +#define TSSWLock                (TOUCH_BASE+0x20) /*  NA    R/W touchscreen software lock register.         */
  72 +#define TSSetup2                (TOUCH_BASE+0x24) /* R/W touchscreen setup control register #2.             */
  73 +
  74 +//
  75 +// To customize for a new touchscreen, there are various macros that
  76 +// have to be set.  If you allow UART_HACK_DEBUG to be defined, you
  77 +// will get real time ts data scrolling up your serial terminal
  78 +// screen that will help you empirically determine good values for these.
  79 +//
  80 +
  81 +//
  82 +// These are used as trigger levels to know when we have pen up/down
  83 +//
  84 +// The rules:
  85 +// 1.  TS_HEAVY_INV_PRESSURE < TS_LIGHT_INV_PRESSURE because these
  86 +//    are Inverse pressure.
  87 +// 2.  Any touch lighter than TS_LIGHT_INV_PRESSURE is a pen up.
  88 +// 3.  Any touch heavier than TS_HEAVY_INV_PRESSURE is a pen down.
  89 +//
  90 +#define   TS_HEAVY_INV_PRESSURE 0xFE0 //C00
  91 +#define   TS_LIGHT_INV_PRESSURE 0xFFF //e00
  92 +
  93 +//
  94 +// If the x, y, or inverse pressure changes more than these values
  95 +// between two succeeding points, the point is not reported.
  96 +//
  97 +#define   TS_MAX_VALID_XY_CHANGE 0x300
  98 +#define   TS_MAX_VALID_PRESSURE_CHANGE  0x100
  99 +
 100 +//
 101 +// This is the minimum Z1 Value that is valid.
 102 +//
 103 +#define     MIN_Z1_VALUE                    0x50
 104 +
 105 +//
 106 +// Settling delay for taking each ADC measurement.  Increase this
 107 +// if ts is jittery.
 108 +//
 109 +#define EP93XX_TS_ADC_DELAY_USEC 2000
 110 +
 111 +//
 112 +// Delay between TS points.
 113 +//
 114 +#define EP93XX_TS_PER_POINT_DELAY_USEC 10000
 115 +
 116 +//-----------------------------------------------------------------------------
 117 +// Debug messaging thru the UARTs
 118 +//-----------------------------------------------------------------------------
 119 +/*
 120 + *  Hello there!  Are you trying to get this driver to work with a new
 121 + *  touschscreen?  Turn this on and you will get useful info coming
 122 + *  out of your serial port.
 123 + */
 124 +/* #define PRINT_CALIBRATION_FACTORS */
 125 +#ifdef PRINT_CALIBRATION_FACTORS
 126 +#define UART_HACK_DEBUG 1
 127 +int iMaxX=0, iMaxY=0, iMinX = 0xfff, iMinY = 0xfff;
 128 +#endif
 129 +
 130 +/*
 131 + * For debugging, let's spew messages out serial port 1 or 3 at 57,600 baud.
 132 + */
 133 +/* #define UART_HACK_DEBUG 1 */
 134 +#if 0
 135 +#ifdef UART_HACK_DEBUG
 136 +static char szBuf[256];
 137 +void UARTWriteString(char * msg);
 138 +#define DPRINTK( x... )   \
 139 +    sprintf( szBuf, ##x ); \
 140 +    UARTWriteString( szBuf );
 141 +#else
 142 +static char szBuf[256];
 143 +#define DPRINTK( x... )  \
 144 +    sprintf( szBuf, ##x ); \
 145 +    printk( szBuf );
 146 +#endif
 147 +#endif // 0
 148 +#define DPRINTK( x... )
 149 +
 150 +//-----------------------------------------------------------------------------
 151 +// A few more macros...
 152 +//-----------------------------------------------------------------------------
 153 +#define TSSETUP_DEFAULT  ( TSSETUP_NSMP_32 | TSSETUP_DEV_64 |  \
 154 +                           ((128<<TSSETUP_SDLY_SHIFT) & TSSETUP_SDLY_MASK) | \
 155 +                           ((128<<TSSETUP_DLY_SHIFT)  & TSSETUP_DLY_MASK) )
 156 +
 157 +#define TSSETUP2_DEFAULT (TSSETUP2_NSIGND)
 158 +
 159 +//
 160 +// For now, we use one of the minor numbers from the local/experimental
 161 +// range.
 162 +//
 163 +#define EP93XX_TS_MINOR 240
 164 +
 165 +//-----------------------------------------------------------------------------
 166 +// Static Declarations
 167 +//-----------------------------------------------------------------------------
 168 +static unsigned int   guiLastX, guiLastY;
 169 +static unsigned int   guiLastInvPressure;
 170 +
 171 +struct TouchScreenSample
 172 +{
 173 +    int     currentX;
 174 +    int     currentY;
 175 +    int     currentButton;
 176 +    int     currentPressure;
 177 +    struct timeval currentTime;
 178 +};
 179 +
 180 +//
 181 +// This must match the structure in tslib.
 182 +//
 183 +struct ts_sample {
 184 +    int     x;
 185 +    int     y;
 186 +    unsigned int    pressure;
 187 +    struct timeval  tv;
 188 +};
 189 +
 190 +
 191 +static struct TouchScreenSample gSample;
 192 +
 193 +// static int currentX, currentY, currentButton;
 194 +// static int gPressure;
 195 +// static struct timeval  gtime;
 196 +
 197 +static int bFreshTouchData;
 198 +static int bCurrentPenDown;
 199 +
 200 +
 201 +
 202 +static DECLARE_WAIT_QUEUE_HEAD(queue);
 203 +static DECLARE_MUTEX(open_sem);
 204 +static spinlock_t event_buffer_lock = SPIN_LOCK_UNLOCKED;
 205 +static struct fasync_struct *ep93xx_fasync;
 206 +
 207 +//-----------------------------------------------------------------------------
 208 +// Typedef Declarations
 209 +//-----------------------------------------------------------------------------
 210 +typedef enum {
 211 +    TS_MODE_UN_INITIALIZED,
 212 +    TS_MODE_HARDWARE_SCAN,
 213 +    TS_MODE_SOFT_SCAN
 214 +} ts_mode_t;
 215 +
 216 +static ts_mode_t      gScanningMode;
 217 +
 218 +typedef enum{
 219 +    TS_STATE_STOPPED = 0,
 220 +    TS_STATE_Z1,
 221 +    TS_STATE_Z2,
 222 +    TS_STATE_Y,
 223 +    TS_STATE_X,
 224 +    TS_STATE_DONE
 225 +} ts_states_t;
 226 +
 227 +typedef struct
 228 +{
 229 +    unsigned int   uiX;
 230 +    unsigned int   uiY;
 231 +    unsigned int   uiZ1;
 232 +    unsigned int   uiZ2;
 233 +    ts_states_t    state;
 234 +} ts_struct_t;
 235 +
 236 +static ts_struct_t sTouch;
 237 +
 238 +/*
 239 + * From the spec, here's how to set up the touch screen's switch registers.
 240 + */
 241 +typedef struct
 242 +{
 243 +    unsigned int uiDetect;
 244 +    unsigned int uiDischarge;
 245 +    unsigned int uiXSample;
 246 +    unsigned int uiYSample;
 247 +    unsigned int uiSwitchZ1;
 248 +    unsigned int uiSwitchZ2;
 249 +}SwitchStructType;
 250 +
 251 +//
 252 +// Here's the switch settings for a 4-wire touchscreen.  See the spec
 253 +// for how to handle a 4, 7, or 8-wire.
 254 +//
 255 +const static SwitchStructType sSwitchSettings =
 256 +/*     s28en=0
 257 + *   TSDetect    TSDischarge  TSXSample  TSYSample    SwitchZ1   SwitchZ2
 258 + */
 259 +    {0x00403604, 0x0007fe04, 0x00081604, 0x00104601, 0x00101601, 0x00101608};
 260 +
 261 +
 262 +//-----------------------------------------------------------------------------
 263 +// Function Declarations
 264 +//-----------------------------------------------------------------------------
 265 +static void ep93xx_ts_set_direct( unsigned int uiADCSwitch );
 266 +static irqreturn_t ep93xx_ts_isr(int irq, void *dev_id);
 267 +static irqreturn_t ep93xx_timer2_isr(int irq, void *dev_id);
 268 +static void ee93xx_ts_evt_add( int button, int dX, int dY, int Pressure );
 269 +static ssize_t ep93xx_ts_read(struct file *filp, char *buf,
 270 +        size_t count, loff_t *l);
 271 +static unsigned int ep93xx_ts_poll(struct file *filp, poll_table *wait);
 272 +static int ep93xx_ts_open(struct inode *inode, struct file *filp);
 273 +static int ep93xx_ts_fasync(int fd, struct file *filp, int on);
 274 +static int ep93xx_ts_release(struct inode *inode, struct file *filp);
 275 +static ssize_t ep93xx_ts_write(struct file *file, const char *buffer,
 276 +                size_t count, loff_t *ppos);
 277 +static void ep93xx_ts_setup(void);
 278 +static void ep93xx_ts_shutdown(void);
 279 +int __init ep93xx_ts_init(void);
 280 +void __exit ep93xx_ts_exit(void);
 281 +static unsigned int CalculateInvPressure( void );
 282 +static unsigned int ADCGetData( unsigned int uiSamples, unsigned int uiMaxDiff);
 283 +static void TS_Soft_Scan_Mode(void);
 284 +static void TS_Hardware_Scan_Mode(void);
 285 +static void ProcessPointData(void);
 286 +static void Set_Timer2_uSec( unsigned int Delay_mSec );
 287 +static void Stop_Timer2(void);
 288 +
 289 +
 290 +
 291 +//-----------------------------------------------------------------------------
 292 +//  Debug stuff...
 293 +//-----------------------------------------------------------------------------
 294 +
 295 +#ifdef UART_HACK_DEBUG
 296 +
 297 +// This "array" is a cheap-n-easy way of getting access to the UART registers.
 298 +static unsigned int * const pDebugUART=(unsigned int *)IO_ADDRESS(UART1_BASE);
 299 +//static unsigned int * const pDebugUART=(unsigned int *)IO_ADDRESS(UART3_BASE);
 300 +static int bUartInitialized = 0;
 301 +
 302 +void SendChar(char value)
 303 +{
 304 +    // wait for Tx fifo full flag to clear.
 305 +    while (pDebugUART[0x18>>2] & 0x20);
 306 +
 307 +    // send a char to the uart
 308 +    pDebugUART[0] = value;
 309 +}
 310 +
 311 +void UARTWriteString(char * msg)
 312 +{
 313 +    int index = 0;
 314 +    unsigned int uiTemp;
 315 +
 316 +    //if((pDebugUART[0x14>>2] & 0x1) == 0)
 317 +    if( bUartInitialized == 0 )
 318 +    {
 319 +        uiTemp = inl(EP93XX_SYSCON_DEVICE_CONFIG);
 320 +        uiTemp |= EP93XX_SYSCON_DEVCFG_U1E;
 321 +        //uiTemp |= EP93XX_SYSCON_DEVCFG_U3E;
 322 +        SysconSetLocked(EP93XX_SYSCON_DEVICE_CONFIG, uiTemp);
 323 +        pDebugUART[0x10>>2] = 0xf;
 324 +        pDebugUART[0xc>>2] = 0;
 325 +        pDebugUART[0x8>>2] = 0x70;
 326 +        pDebugUART[0x14>>2] = 0x1;
 327 +        bUartInitialized = 1;
 328 +    }
 329 +    while (msg[index] != 0)
 330 +    {
 331 +        if (msg[index] == '\n')
 332 +        {
 333 +            SendChar('\r');
 334 +            SendChar('\n');
 335 +        }
 336 +        else
 337 +        {
 338 +            SendChar(msg[index]);
 339 +        }
 340 +        index++;
 341 +    }
 342 +}
 343 +#endif // UART_HACK_DEBUG
 344 +
 345 +/*
 346 + *  ep93xx_ts_isr
 347 + */
 348 +static irqreturn_t ep93xx_ts_isr(int irq, void *dev_id)
 349 +{
 350 +    DPRINTK("isr\n");
 351 +
 352 +    //
 353 +    // Note that we don't clear the interrupt here.  The interrupt
 354 +    // gets cleared in TS_Soft_Scan_Mode when the TS ENABLE
 355 +    // bit is cleared.
 356 +    //
 357 +
 358 +    //
 359 +    // Set the ts to manual polling mode and schedule a callback.
 360 +    // That way we can return from the isr in a reasonable amount of
 361 +    // time and process the touch in the callback after a brief delay.
 362 +    //
 363 +    TS_Soft_Scan_Mode();
 364 +
 365 +    return(IRQ_HANDLED);
 366 +}
 367 +
 368 +/*
 369 + * Save the current ts 'event' in an atomic fashion.
 370 + */
 371 +static void ee93xx_ts_evt_add( int buttons, int iX, int iY, int iPressure )
 372 +{
 373 +#ifdef PRINT_CALIBRATION_FACTORS
 374 +    if( iX > iMaxX ) iMaxX = iX;
 375 +    if( iX < iMinX ) iMinX = iX;
 376 +    if( iY > iMaxY ) iMaxY = iY;
 377 +    if( iY < iMinY ) iMinY = iY;
 378 +#endif
 379 +
 380 +
 381 +    // printk("ee93xx_ts_evt_add\n");
 382 +    //DPRINTK("cb\n");
 383 +    /*
 384 +     * Note the event, but use spinlocks to keep it from getting
 385 +     * halfway read if we get interrupted.
 386 +     */
 387 +
 388 +    spin_lock(&event_buffer_lock);
 389 +    gSample.currentX        = iX;
 390 +    gSample.currentY        = iY;
 391 +    gSample.currentButton   = buttons;
 392 +    gSample.currentPressure = iPressure;
 393 +    bFreshTouchData         = 1;
 394 +    do_gettimeofday(&gSample.currentTime);
 395 +
 396 +
 397 +    spin_unlock(&event_buffer_lock);
 398 +
 399 +    kill_fasync(&ep93xx_fasync, SIGIO, POLL_IN);
 400 +    wake_up_interruptible(&queue);
 401 +
 402 +}
 403 +
 404 +
 405 +static ssize_t ep93xx_ts_read(struct file *filp, char *buf, size_t count, loff_t *l)
 406 +{
 407 +
 408 +    unsigned short data[3];
 409 +    struct  ts_sample   ts_data;
 410 +    int     iReturn = -EFAULT;
 411 +    // printk("ep93xx_ts_read\n");
 412 +
 413 +#ifdef PRINT_CALIBRATION_FACTORS
 414 +    static int lala=0;
 415 +    if( bFreshTouchData && (lala++ > 9) )
 416 +    {
 417 +        DPRINTK("%4d, %4d - range [%4d to %4d],[%4d to %4d]\n",
 418 +            f, currentY, iMinX, iMaxX, iMinY, iMaxY );
 419 +        lala = 0;
 420 +    }
 421 +#endif
 422 +    if( !bFreshTouchData)
 423 +    {
 424 +        iReturn = 0;
 425 +    }
 426 +    else if( (count == sizeof(data)) )
 427 +    {
 428 +        spin_lock_irq(&event_buffer_lock);
 429 +        bFreshTouchData = 0;
 430 +        data[0] = gSample.currentX;
 431 +        data[1] = gSample.currentY;
 432 +        data[2] = gSample.currentButton;
 433 +
 434 +        spin_unlock_irq(&event_buffer_lock);
 435 +
 436 +        if (copy_to_user(buf, data, sizeof data))
 437 +            return -EFAULT;
 438 +
 439 +        count -= sizeof(data);
 440 +
 441 +        /* return the # of bytes that got read */
 442 +        iReturn = sizeof(data) ;
 443 +    }
 444 +    else if (count == sizeof(struct ts_sample) )
 445 +    {
 446 +        spin_lock_irq(&event_buffer_lock);
 447 +        bFreshTouchData = 0;
 448 +        ts_data.x           = gSample.currentX;
 449 +        ts_data.y           = gSample.currentY;
 450 +        ts_data.pressure    = gSample.currentPressure;
 451 +        ts_data.tv          = gSample.currentTime;
 452 +        spin_unlock_irq(&event_buffer_lock);
 453 +
 454 +        if (copy_to_user(buf, &ts_data, sizeof(struct ts_sample)))
 455 +        {
 456 +            iReturn = -EFAULT;
 457 +        }
 458 +        else
 459 +        {
 460 +            count -= sizeof(ts_data);
 461 +            iReturn = sizeof(ts_data);
 462 +        }
 463 +
 464 +    }
 465 +
 466 +    return iReturn;
 467 +}
 468 +
 469 +static unsigned int ep93xx_ts_poll(struct file *filp, poll_table *wait)
 470 +{
 471 +    // printk("ep93xx_ts_poll\n");
 472 +    poll_wait(filp, &queue, wait);
 473 +
 474 +    if( bFreshTouchData )
 475 +    {
 476 +        return POLLIN | POLLRDNORM;
 477 +    }
 478 +
 479 +    return 0;
 480 +}
 481 +
 482 +static int ep93xx_ts_open(struct inode *inode, struct file *filp)
 483 +{
 484 +     printk("ep93xx_ts_open");
 485 +
 486 +    if( down_trylock(&open_sem) )
 487 +    {
 488 +        return -EBUSY;
 489 +    }
 490 +
 491 +    ep93xx_ts_setup();
 492 +
 493 +    return 0;
 494 +}
 495 +
 496 +/*
 497 + * Asynchronous I/O support.
 498 + */
 499 +static int ep93xx_ts_fasync(int fd, struct file *filp, int on)
 500 +{
 501 +    int retval;
 502 +
 503 +    retval = fasync_helper(fd, filp, on, &ep93xx_fasync);
 504 +    if (retval < 0)
 505 +    {
 506 +        return retval;
 507 +    }
 508 +
 509 +    return 0;
 510 +}
 511 +
 512 +static int ep93xx_ts_release(struct inode *inode, struct file *filp)
 513 +{
 514 +    Stop_Timer2();
 515 +
 516 +    /*
 517 +     * Call our async I/O support to request that this file
 518 +     * cease to be used for async I/O.
 519 +     */
 520 +    ep93xx_ts_fasync(-1, filp, 0);
 521 +
 522 +    ep93xx_ts_shutdown();
 523 +
 524 +    up(&open_sem);
 525 +
 526 +    return 0;
 527 +}
 528 +
 529 +static ssize_t ep93xx_ts_write(struct file *file, const char *buffer, size_t count,
 530 +               loff_t *ppos)
 531 +{
 532 +    return -EINVAL;
 533 +}
 534 +
 535 +
 536 +static int ep93xx_ts_ioctl(struct inode *inode, struct file *file, uint command, ulong u)
 537 +{
 538 +    static const int         version = EV_VERSION;
 539 +    static const u_int32_t   bit =(1 << EV_ABS);
 540 +    static const u_int32_t   absbit = (1 << ABS_X) | (1 << ABS_Y) | (1 << ABS_PRESSURE);
 541 +    int         iReturn ;
 542 +    int         i = 0;
 543 +
 544 +    switch(command)
 545 +    {
 546 +        case EVIOCGVERSION:
 547 +            DPRINTK("ep93xx_ts_ioctl command = EVIOCGVERSION\r\n");
 548 +            i = copy_to_user((void __user *)u, (void *)version, sizeof(version));
 549 +            iReturn = i ? -EFAULT : 0;
 550 +            break;
 551 +
 552 +        case EVIOCGBIT(0,sizeof(u_int32_t) * 8) :
 553 +            DPRINTK("ep93xx_ts_ioctl command = EVIOCGBIT(0,sizeof(uint32) * 8)\r\n");
 554 +            i = copy_to_user((void __user *)u, (void *)bit, sizeof(bit));
 555 +            iReturn = i ? -EFAULT : 0;
 556 +            break;
 557 +
 558 +        case EVIOCGBIT(EV_ABS, sizeof(absbit) * 8):
 559 +            DPRINTK("ep93xx_ts_ioctl command = EVIOCGBIT(0,sizeof(uint32) * 8)\r\n");
 560 +            copy_to_user((void __user *)u, (void *)absbit, sizeof(absbit));
 561 +            iReturn = i ? -EFAULT : 0;
 562 +            break;
 563 +        default:
 564 +            DPRINTK(" ep93xx_ts_ioctl unknown command = %d\n",u);
 565 +            iReturn = -1;
 566 +            break;
 567 +    }
 568 +
 569 +    return iReturn;
 570 +}
 571 +
 572 +static struct file_operations ep93xx_ts_fops = {
 573 +    owner:      THIS_MODULE,
 574 +    read:       ep93xx_ts_read,
 575 +    write:      ep93xx_ts_write,
 576 +    poll:       ep93xx_ts_poll,
 577 +    open:       ep93xx_ts_open,
 578 +    ioctl:      ep93xx_ts_ioctl,
 579 +    release:    ep93xx_ts_release,
 580 +    fasync:     ep93xx_ts_fasync,
 581 +};
 582 +
 583 +static struct miscdevice ep93xx_ts_miscdev =
 584 +{
 585 +        EP93XX_TS_MINOR,
 586 +        "ep93xx_ts",
 587 +        &ep93xx_ts_fops
 588 +};
 589 +
 590 +void ep93xx_ts_setup(void)
 591 +{
 592 +    unsigned int uiKTDIV, uiTSXYMaxMin;
 593 +    // printk("ep93xx_hw_setup\n");
 594 +
 595 +    /*
 596 +     * Set the TSEN bit in KTDIV so that we are enabling the clock
 597 +     * for the touchscreen.
 598 +     */
 599 +    uiKTDIV = inl(SYSCON_KTDIV);
 600 +    uiKTDIV |= SYSCON_KTDIV_TSEN;
 601 +    SysconSetLocked( SYSCON_KTDIV, uiKTDIV );
 602 +
 603 +    //
 604 +    // Program the TSSetup and TSSetup2 registers.
 605 +    //
 606 +    outl( TSSETUP_DEFAULT, TSSetup );
 607 +    outl( TSSETUP2_DEFAULT, TSSetup2 );
 608 +
 609 +    //
 610 +    // Set the the touch settings.
 611 +    //
 612 +    outl( 0xaa, TSSWLock );
 613 +    outl( sSwitchSettings.uiDischarge, TSDirect );
 614 +
 615 +    outl( 0xaa, TSSWLock );
 616 +    outl( sSwitchSettings.uiDischarge, TSDischarge );
 617 +
 618 +    outl( 0xaa, TSSWLock );
 619 +    outl( sSwitchSettings.uiSwitchZ1, TSXSample );
 620 +
 621 +    outl( 0xaa, TSSWLock );
 622 +    outl( sSwitchSettings.uiSwitchZ2, TSYSample );
 623 +
 624 +    outl( 0xaa, TSSWLock );
 625 +    outl( sSwitchSettings.uiDetect, TSDetect );
 626 +
 627 +    //
 628 +    // X,YMin set to 0x40 = have to drag that many pixels for a new irq.
 629 +    // X,YMax set to 0x40 = 1024 pixels is the maximum movement within the
 630 +    // time scan limit.
 631 +    //
 632 +    uiTSXYMaxMin =  (50   << TSMAXMIN_XMIN_SHIFT) & TSMAXMIN_XMIN_MASK;
 633 +    uiTSXYMaxMin |= (50   << TSMAXMIN_YMIN_SHIFT) & TSMAXMIN_YMIN_MASK;
 634 +    uiTSXYMaxMin |= (0xff << TSMAXMIN_XMAX_SHIFT) & TSMAXMIN_XMAX_MASK;
 635 +    uiTSXYMaxMin |= (0xff << TSMAXMIN_YMAX_SHIFT) & TSMAXMIN_YMAX_MASK;
 636 +    outl( uiTSXYMaxMin, TSXYMaxMin );
 637 +
 638 +    bCurrentPenDown = 0;
 639 +    bFreshTouchData = 0;
 640 +    guiLastX = 0;
 641 +    guiLastY = 0;
 642 +    guiLastInvPressure = 0xffffff;
 643 +
 644 +    //
 645 +    // Enable the touch screen scanning engine.
 646 +    //
 647 +    TS_Hardware_Scan_Mode();
 648 +}
 649 +
 650 +/*
 651 + * ep93xx_ts_shutdown
 652 + *
 653 + */
 654 +static void
 655 +ep93xx_ts_shutdown(void)
 656 +{
 657 +    unsigned int uiKTDIV;
 658 +
 659 +    DPRINTK("ep93xx_ts_shutdown\n");
 660 +
 661 +    sTouch.state = TS_STATE_STOPPED;
 662 +    Stop_Timer2();
 663 +
 664 +    /*
 665 +     * Disable the scanning engine.
 666 +     */
 667 +    outl( 0, TSSetup );
 668 +    outl( 0, TSSetup2 );
 669 +
 670 +    /*
 671 +     * Clear the TSEN bit in KTDIV so that we are disabling the clock
 672 +     * for the touchscreen.
 673 +     */
 674 +    uiKTDIV = inl(SYSCON_KTDIV);
 675 +    uiKTDIV &= ~SYSCON_KTDIV_TSEN;
 676 +    SysconSetLocked( SYSCON_KTDIV, uiKTDIV );
 677 +
 678 +} /* ep93xx_ts_shutdown */
 679 +
 680 +static irqreturn_t ep93xx_timer2_isr(int irq, void *dev_id)
 681 +{
 682 +    DPRINTK("%d", (int)sTouch.state );
 683 +
 684 +    switch( sTouch.state )
 685 +    {
 686 +        case TS_STATE_STOPPED:
 687 +            TS_Hardware_Scan_Mode();
 688 +            break;
 689 +
 690 +        //
 691 +        // Get the Z1 value for pressure measurement and set up
 692 +        // the switch register for getting the Z2 measurement.
 693 +        //
 694 +        case TS_STATE_Z1:
 695 +            Set_Timer2_uSec( EP93XX_TS_ADC_DELAY_USEC );
 696 +            sTouch.uiZ1 = ADCGetData( 2, 200 );
 697 +            ep93xx_ts_set_direct( sSwitchSettings.uiSwitchZ2 );
 698 +            sTouch.state = TS_STATE_Z2;
 699 +            break;
 700 +
 701 +        //
 702 +        // Get the Z2 value for pressure measurement and set up
 703 +        // the switch register for getting the Y measurement.
 704 +        //
 705 +        case TS_STATE_Z2:
 706 +            sTouch.uiZ2 = ADCGetData( 2, 200 );
 707 +            ep93xx_ts_set_direct( sSwitchSettings.uiYSample );
 708 +            sTouch.state = TS_STATE_Y;
 709 +            break;
 710 +
 711 +        //
 712 +        // Get the Y value and set up the switch register for
 713 +        // getting the X measurement.
 714 +        //
 715 +        case TS_STATE_Y:
 716 +            sTouch.uiY = ADCGetData( 4, 20 );
 717 +            ep93xx_ts_set_direct( sSwitchSettings.uiXSample );
 718 +            sTouch.state = TS_STATE_X;
 719 +            break;
 720 +
 721 +        //
 722 +        // Read the X value.  This is the last of the 4 adc values
 723 +        // we need so we continue on to process the data.
 724 +        //
 725 +        case TS_STATE_X:
 726 +            Stop_Timer2();
 727 +
 728 +            sTouch.uiX = ADCGetData( 4, 20 );
 729 +
 730 +            outl( 0xaa, TSSWLock );
 731 +            outl( sSwitchSettings.uiDischarge, TSDirect );
 732 +
 733 +            sTouch.state = TS_STATE_DONE;
 734 +
 735 +            /*
 736 +             * Process this set of ADC readings.
 737 +             */
 738 +            ProcessPointData();
 739 +
 740 +            break;
 741 +
 742 +
 743 +        //
 744 +        // Shouldn't get here.  But if we do, we can recover...
 745 +        //
 746 +        case TS_STATE_DONE:
 747 +            TS_Hardware_Scan_Mode();
 748 +            break;
 749 +    }
 750 +
 751 +    //
 752 +    // Clear the timer2 interrupt.
 753 +    //
 754 +    outl( 1, TIMER2CLEAR );
 755 +    return(IRQ_HANDLED);
 756 +}
 757 +
 758 +/*---------------------------------------------------------------------
 759 + * ProcessPointData
 760 + *
 761 + * This routine processes the ADC data into usable point data and then
 762 + * puts the driver into hw or sw scanning mode before returning.
 763 + *
 764 + * We calculate inverse pressure (lower number = more pressure) then
 765 + * do a hystheresis with the two pressure values 'light' and 'heavy'.
 766 + *
 767 + * If we are above the light, we have pen up.
 768 + * If we are below the heavy we have pen down.
 769 + * As long as the pressure stays below the light, pen stays down.
 770 + * When we get above the light again, pen goes back up.
 771 + *
 772 + */
 773 +static void ProcessPointData(void)
 774 +{
 775 +    int  bValidPoint = 0;
 776 +    unsigned int   uiXDiff, uiYDiff, uiInvPressureDiff;
 777 +    unsigned int   uiInvPressure;
 778 +
 779 +    //
 780 +    // Calculate the current pressure.
 781 +    //
 782 +    uiInvPressure = CalculateInvPressure();
 783 +
 784 +    DPRINTK(" X=0x%x, Y=0x%x, Z1=0x%x, Z2=0x%x, InvPressure=0x%x",
 785 +            sTouch.uiX, sTouch.uiY, sTouch.uiZ1, sTouch.uiZ2, uiInvPressure );
 786 +
 787 +    //
 788 +    // If pen pressure is so light that it is greater than the 'max' setting
 789 +    // then we consider this to be a pen up.
 790 +    //
 791 +    if( uiInvPressure >= TS_LIGHT_INV_PRESSURE )
 792 +    {
 793 +        DPRINTK(" -- up \n");
 794 +        bCurrentPenDown = 0;
 795 +                ee93xx_ts_evt_add( 0, guiLastX, guiLastY, 0 );
 796 +        TS_Hardware_Scan_Mode();
 797 +        return;
 798 +    }
 799 +
 800 +    //
 801 +    // Hystheresis:
 802 +    // If the pen pressure is hard enough to be less than the 'min' OR
 803 +    // the pen is already down and is still less than the 'max'...
 804 +    //
 805 +    if( (uiInvPressure < TS_HEAVY_INV_PRESSURE) ||
 806 +        ( bCurrentPenDown && (uiInvPressure < TS_LIGHT_INV_PRESSURE) )  )
 807 +    {
 808 +        if( bCurrentPenDown )
 809 +        {
 810 +            //
 811 +            // If pen was previously down, check the difference between
 812 +            // the last sample and this one... if the difference between
 813 +            // samples is too great, ignore the sample.
 814 +            //
 815 +            uiXDiff = abs(guiLastX - sTouch.uiX);
 816 +            uiYDiff = abs(guiLastY - sTouch.uiY);
 817 +            uiInvPressureDiff = abs(guiLastInvPressure - uiInvPressure);
 818 +
 819 +            if( (uiXDiff < TS_MAX_VALID_XY_CHANGE) && (uiYDiff < TS_MAX_VALID_XY_CHANGE) &&
 820 +                (uiInvPressureDiff < TS_MAX_VALID_PRESSURE_CHANGE) )
 821 +            {
 822 +                DPRINTK(" -- valid(two) \n");
 823 +                bValidPoint = 1;
 824 +            }
 825 +            else
 826 +            {
 827 +                DPRINTK(" -- INvalid(two) \n");
 828 +            }
 829 +        }
 830 +        else
 831 +        {
 832 +            DPRINTK(" -- valid \n");
 833 +            bValidPoint = 1;
 834 +        }
 835 +
 836 +        /*
 837 +         * If either the pen was put down or dragged make a note of it.
 838 +         */
 839 +        if( bValidPoint )
 840 +        {
 841 +            guiLastX = sTouch.uiX;
 842 +            guiLastY = sTouch.uiY;
 843 +            guiLastInvPressure = uiInvPressure;
 844 +            bCurrentPenDown = 1;
 845 +            ee93xx_ts_evt_add( 1, sTouch.uiX, sTouch.uiY, (0x7000000 /uiInvPressure) );
 846 +        }
 847 +
 848 +        TS_Soft_Scan_Mode();
 849 +        return;
 850 +    }
 851 +
 852 +    DPRINTK(" -- fallout \n");
 853 +    TS_Hardware_Scan_Mode();
 854 +}
 855 +
 856 +static void ep93xx_ts_set_direct( unsigned int uiADCSwitch )
 857 +{
 858 +    unsigned int uiResult;
 859 +
 860 +    //
 861 +    // Set the switch settings in the direct register.
 862 +    //
 863 +    outl( 0xaa, TSSWLock );
 864 +    outl( uiADCSwitch, TSDirect );
 865 +
 866 +    //
 867 +    // Read and throw away the first sample.
 868 +    //
 869 +    do {
 870 +        uiResult = inl(TSXYResult);
 871 +    } while( !(uiResult & TSXYRESULT_SDR) );
 872 +
 873 +}
 874 +
 875 +static unsigned int ADCGetData
 876 +(
 877 +    unsigned int uiSamples,
 878 +    unsigned int uiMaxDiff
 879 +)
 880 +{
 881 +    unsigned int   uiResult, uiValue, uiCount, uiLowest, uiHighest, uiSum, uiAve;
 882 +
 883 +    do
 884 +    {
 885 +        //
 886 +        //Initialize our values.
 887 +        //
 888 +        uiLowest        = 0xfffffff;
 889 +        uiHighest       = 0;
 890 +        uiSum           = 0;
 891 +
 892 +        for( uiCount = 0 ; uiCount < uiSamples ; uiCount++ )
 893 +        {
 894 +            //
 895 +            // Read the touch screen four more times and average.
 896 +            //
 897 +            do {
 898 +                uiResult = inl(TSXYResult);
 899 +            } while( !(uiResult & TSXYRESULT_SDR) );
 900 +
 901 +            uiValue = (uiResult & TSXYRESULT_AD_MASK) >> TSXYRESULT_AD_SHIFT;
 902 +            uiValue = ((uiValue >> 4) + ((1 + TSXYRESULT_X_MASK)>>1))  & TSXYRESULT_X_MASK;
 903 +
 904 +            //
 905 +            // Add up the values.
 906 +            //
 907 +            uiSum += uiValue;
 908 +
 909 +            //
 910 +            // Get the lowest and highest values.
 911 +            //
 912 +            if( uiValue < uiLowest )
 913 +            {
 914 +                uiLowest = uiValue;
 915 +            }
 916 +            if( uiValue > uiHighest )
 917 +            {
 918 +                uiHighest = uiValue;
 919 +            }
 920 +        }
 921 +
 922 +    } while( (uiHighest - uiLowest) > uiMaxDiff );
 923 +
 924 +    //
 925 +    // Calculate the Average value.
 926 +    //
 927 +    uiAve = uiSum / uiSamples;
 928 +
 929 +    return uiAve;
 930 +}
 931 +
 932 +//****************************************************************************
 933 +// CalculateInvPressure
 934 +//****************************************************************************
 935 +// Is the Touch Valid.  Touch is not valid if the X or Y value is not
 936 +// in range and the pressure is not  enough.
 937 +//
 938 +// Touch resistance can be measured by the following formula:
 939 +//
 940 +//          Rx * X *     Z2
 941 +// Rtouch = --------- * (-- - 1)
 942 +//           4096        Z1
 943 +//
 944 +// This is simplified in the ration of Rtouch to Rx.  The lower the value, the
 945 +// higher the pressure.
 946 +//
 947 +//                     Z2
 948 +// InvPressure =  X * (-- - 1)
 949 +//                     Z1
 950 +//
 951 +static unsigned int CalculateInvPressure(void)
 952 +{
 953 +    unsigned int   uiInvPressure;
 954 +
 955 +    //
 956 +    // Check to see if the point is valid.
 957 +    //
 958 +    if( sTouch.uiZ1 < MIN_Z1_VALUE )
 959 +    {
 960 +        uiInvPressure = 0x10000;
 961 +    }
 962 +
 963 +    //
 964 +    // Can omit the pressure calculation if you need to get rid of the division.
 965 +    //
 966 +    else
 967 +    {
 968 +        uiInvPressure = ((sTouch.uiX * sTouch.uiZ2) / sTouch.uiZ1) - sTouch.uiX;
 969 +    }
 970 +
 971 +    return uiInvPressure;
 972 +}
 973 +
 974 +
 975 +
 976 +//****************************************************************************
 977 +// TS_Hardware_Scan_Mode
 978 +//****************************************************************************
 979 +// Enables the ep93xx ts scanning engine so that when the pen goes down
 980 +// we will get an interrupt.
 981 +//
 982 +//
 983 +static void TS_Hardware_Scan_Mode(void)
 984 +{
 985 +    unsigned int   uiDevCfg;
 986 +
 987 +    DPRINTK("S\n");
 988 +
 989 +    //
 990 +    // Disable the soft scanning engine.
 991 +    //
 992 +    sTouch.state = TS_STATE_STOPPED;
 993 +    Stop_Timer2();
 994 +
 995 +    //
 996 +    // Clear the TIN (Touchscreen INactive) bit so we can go to
 997 +    // automatic scanning mode.
 998 +    //
 999 +    uiDevCfg = inl( EP93XX_SYSCON_DEVICE_CONFIG );
1000 +    SysconSetLocked( EP93XX_SYSCON_DEVICE_CONFIG, (uiDevCfg & ~EP93XX_SYSCON_DEVCFG_TIN) );
1001 +
1002 +    //
1003 +    // Enable the touch screen scanning state machine by setting
1004 +    // the ENABLE bit.
1005 +    //
1006 +    outl( (TSSETUP_DEFAULT | TSSETUP_ENABLE), TSSetup );
1007 +
1008 +    //
1009 +    // Set the flag to show that we are in interrupt mode.
1010 +    //
1011 +    gScanningMode = TS_MODE_HARDWARE_SCAN;
1012 +
1013 +    //
1014 +    // Initialize TSSetup2 register.
1015 +    //
1016 +    outl( TSSETUP2_DEFAULT, TSSetup2 );
1017 +
1018 +}
1019 +
1020 +//****************************************************************************
1021 +// TS_Soft_Scan_Mode
1022 +//****************************************************************************
1023 +// Sets the touch screen to manual polling mode.
1024 +//
1025 +//
1026 +static void TS_Soft_Scan_Mode(void)
1027 +{
1028 +    unsigned int   uiDevCfg;
1029 +
1030 +    DPRINTK("M\n");
1031 +
1032 +    if( gScanningMode != TS_MODE_SOFT_SCAN )
1033 +    {
1034 +        //
1035 +        // Disable the touch screen scanning state machine by clearing
1036 +        // the ENABLE bit.
1037 +        //
1038 +        outl( TSSETUP_DEFAULT, TSSetup );
1039 +
1040 +        //
1041 +        // Set the TIN bit so we can do manual touchscreen polling.
1042 +        //
1043 +        uiDevCfg = inl(EP93XX_SYSCON_DEVICE_CONFIG );
1044 +        SysconSetLocked( EP93XX_SYSCON_DEVICE_CONFIG, (uiDevCfg | EP93XX_SYSCON_DEVCFG_TIN) );
1045 +    }
1046 +
1047 +    //
1048 +    // Set the switch register up for the first ADC reading
1049 +    //
1050 +    ep93xx_ts_set_direct( sSwitchSettings.uiSwitchZ1 );
1051 +
1052 +    //
1053 +    // Initialize our software state machine to know which ADC
1054 +    // reading to take
1055 +    //
1056 +    sTouch.state = TS_STATE_Z1;
1057 +
1058 +    //
1059 +    // Set the timer so after a mSec or two settling delay it will
1060 +    // take the first ADC reading.
1061 +    //
1062 +    Set_Timer2_uSec( EP93XX_TS_PER_POINT_DELAY_USEC );
1063 +
1064 +    //
1065 +    // Note that we are in sw scanning mode not hw scanning mode.
1066 +    //
1067 +    gScanningMode = TS_MODE_SOFT_SCAN;
1068 +
1069 +}
1070 +
1071 +static void Set_Timer2_uSec( unsigned int uiDelay_uSec )
1072 +{
1073 +    unsigned int uiClockTicks;
1074 +
1075 +    /*
1076 +     * Stop timer 2
1077 +     */
1078 +    outl( 0, TIMER2CONTROL );
1079 +
1080 +    uiClockTicks = ((uiDelay_uSec * 508) + 999) / 1000;
1081 +    outl( uiClockTicks, TIMER2LOAD );
1082 +    outl( uiClockTicks, TIMER2VALUE );
1083 +
1084 +    /*
1085 +     * Set up Timer 2 for 508 kHz clock and periodic mode.
1086 +     */
1087 +    outl( 0xC8, TIMER2CONTROL );
1088 +
1089 +}
1090 +
1091 +static void Stop_Timer2(void)
1092 +{
1093 +    outl( 0, TIMER2CONTROL );
1094 +}
1095 +
1096 +/*
1097 + * Initialization and exit routines
1098 + */
1099 +int __init ep93xx_ts_init(void)
1100 +{
1101 +    int retval;
1102 +
1103 +    //printk("ep93xx_ts_init\n");
1104 +
1105 +    // printk("request Touchscreen interrupt.\n");
1106 +    retval = request_irq( IRQ_EP93XX_TOUCH, ep93xx_ts_isr, IRQF_DISABLED, "ep93xx_ts", 0);
1107 +    if( retval )
1108 +    {
1109 +        printk(KERN_WARNING "ep93xx_ts: failed to get touchscreen IRQ\n");
1110 +        return retval;
1111 +    }
1112 +
1113 +    // printk("Request Timer interrupt.\n");
1114 +    retval = request_irq( IRQ_EP93XX_TIMER2, ep93xx_timer2_isr,
1115 +                        IRQF_DISABLED, "ep93xx_timer2", 0);
1116 +    if( retval )
1117 +    {
1118 +        printk(KERN_WARNING "ep93xx_ts: failed to get timer2 IRQ\n");
1119 +        return retval;
1120 +    }
1121 +
1122 +    // printk("Register Touchscreen Driver\n");
1123 +    misc_register(&ep93xx_ts_miscdev);
1124 +
1125 +    sTouch.state = TS_STATE_STOPPED;
1126 +    gScanningMode = TS_MODE_UN_INITIALIZED;
1127 +
1128 +    printk(KERN_NOTICE "ep93xx touchscreen driver configured for 4-wire operation\n");
1129 +
1130 +    return 0;
1131 +}
1132 +void __exit
1133 +ep93xx_ts_exit(void)
1134 +{
1135 +    DPRINTK("ep93xx_ts_exit\n");
1136 +
1137 +    Stop_Timer2();
1138 +
1139 +    free_irq(IRQ_EP93XX_TOUCH, 0);
1140 +    free_irq(IRQ_EP93XX_TIMER2, 0);
1141 +
1142 +    misc_deregister(&ep93xx_ts_miscdev);
1143 +}
1144 +
1145 +module_init(ep93xx_ts_init);
1146 +module_exit(ep93xx_ts_exit);
1147 +
1148 +MODULE_DESCRIPTION("Cirrus EP93xx touchscreen driver");
1149 +MODULE_SUPPORTED_DEVICE("touchscreen/ep93xx");
1150 Index: linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.h
1151 ===================================================================
1152 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
1153 +++ linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.h        2009-11-24 21:00:45.000000000 +0100
1154 @@ -0,0 +1,53 @@
1155 +/*\r
1156 + * ep93xx_ts.h\r
1157 + *\r
1158 + * The contents of this file are subject to the Mozilla Public License\r
1159 + * Version 1.1 (the "License"); you may not use this file except in\r
1160 + * compliance with the License. You may obtain a copy of the License\r
1161 + * at http://www.mozilla.org/MPL/\r
1162 + *\r
1163 + * Software distributed under the License is distributed on an "AS IS"\r
1164 + * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See\r
1165 + * the License for the specific language governing rights and\r
1166 + * limitations under the License.\r
1167 + *\r
1168 + * The initial developer of the original code is David A. Hinds\r
1169 + * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds\r
1170 + * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.\r
1171 + *\r
1172 + * Alternatively, the contents of this file may be used under the\r
1173 + * terms of the GNU General Public License version 2 (the "GPL"), in\r
1174 + * which case the provisions of the GPL are applicable instead of the\r
1175 + * above.  If you wish to allow the use of your version of this file\r
1176 + * only under the terms of the GPL and not to allow others to use\r
1177 + * your version of this file under the MPL, indicate your decision by\r
1178 + * deleting the provisions above and replace them with the notice and\r
1179 + * other provisions required by the GPL.  If you do not delete the\r
1180 + * provisions above, a recipient may use your version of this file\r
1181 + * under either the MPL or the GPL.\r
1182 + */\r
1183 +\r
1184 +#ifndef _LINUX_EP93XX_TS_H\r
1185 +#define _LINUX_EP93XX_TS_H\r
1186 +\r
1187 +/*touchscreen register defines*/\r
1188 +#define SYSCON_KTDIV   EP93XX_SYSCON_KEY_TOUCH_CLOCK_DIV\r
1189 +#define SYSCON_SWLOCK  EP93XX_SYSCON_SWLOCK\r
1190 +#define TSSetup        EP93XX_TOUCHSCREEN_TSSetup\r
1191 +#define TSXYMaxMin     EP93XX_TOUCHSCREEN_TSXYMaxMin\r
1192 +#define TSXYResult     EP93XX_TOUCHSCREEN_TSDischarge\r
1193 +#define TSDischarge    EP93XX_TOUCHSCREEN_TSDischarge\r
1194 +#define TSXSample      EP93XX_TOUCHSCREEN_TSXSample\r
1195 +#define TSYSample      EP93XX_TOUCHSCREEN_TSYSample\r
1196 +#define TSDirect       EP93XX_TOUCHSCREEN_TSDirect\r
1197 +#define TSDetect       EP93XX_TOUCHSCREEN_TSDetect\r
1198 +#define TSSWLock       EP93XX_TOUCHSCREEN_TSSWLock\r
1199 +#define TSSetup2       EP93XX_TOUCHSCREEN_TSSetup2\r
1200 +\r
1201 +\r
1202 +//#define SYSCON_DEVCFG        EP93XX_SYSCON_DEVICE_CONFIG\r
1203 +#define TIMER2CONTROL  EP93XX_TIMER2_CONTROL\r
1204 +#define TIMER2LOAD     EP93XX_TIMER2_LOAD\r
1205 +#define TIMER2VALUE    EP93XX_TIMER2_VALUE\r
1206 +#define TIMER2CLEAR    EP93XX_TIMER2_CLEAR\r
1207 +#endif\r
1208 Index: linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/hardware.h
1209 ===================================================================
1210 --- linux-2.6.30.9.orig/arch/arm/mach-ep93xx/include/mach/hardware.h    2009-11-24 21:00:18.000000000 +0100
1211 +++ linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/hardware.h 2009-11-24 21:09:21.000000000 +0100
1212 @@ -7,6 +7,7 @@
1213  #include "ep93xx-regs.h"
1214
1215  #define pcibios_assign_all_busses()    0
1216 +#include "regs_touch.h"
1217
1218  #include "platform.h"
1219
1220 Index: linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/regs_touch.h
1221 ===================================================================
1222 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
1223 +++ linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/regs_touch.h       2009-11-24 21:00:45.000000000 +0100
1224 @@ -0,0 +1,95 @@
1225 +/*=============================================================================
1226 + *
1227 + *  FILE:       regs_touch.h
1228 + *
1229 + *  DESCRIPTION:    Analog Touchscreen Register Definition
1230 + *
1231 + *  Copyright Cirrus Logic, 2001-2003
1232 + *
1233 + * This program is free software; you can redistribute it and/or modify
1234 + * it under the terms of the GNU General Public License as published by
1235 + * the Free Software Foundation; either version 2 of the License, or
1236 + * (at your option) any later version.
1237 + *
1238 + * This program is distributed in the hope that it will be useful,
1239 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1240 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1241 + * GNU General Public License for more details.
1242 + *
1243 + * You should have received a copy of the GNU General Public License
1244 + * along with this program; if not, write to the Free Software
1245 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
1246 + *=============================================================================
1247 + */
1248 +#ifndef _REGS_TOUCH_H_
1249 +#define _REGS_TOUCH_H_
1250 +
1251 +/*
1252 + *-----------------------------------------------------------------------------
1253 + * Individual bit #defines
1254 + *-----------------------------------------------------------------------------
1255 + */
1256 +#define TSSETUP_SDLY_MASK           0x000003FF
1257 +#define TSSETUP_SDLY_SHIFT          0
1258 +#define TSSETUP_NSMP_4              0x00000000
1259 +#define TSSETUP_NSMP_8              0x00000400
1260 +#define TSSETUP_NSMP_16             0x00000800
1261 +#define TSSETUP_NSMP_32             0x00000C00
1262 +#define TSSETUP_NSMP_MASK           0x00000C00
1263 +#define TSSETUP_DEV_4               0x00000000
1264 +#define TSSETUP_DEV_8               0x00001000
1265 +#define TSSETUP_DEV_12              0x00002000
1266 +#define TSSETUP_DEV_16              0x00003000
1267 +#define TSSETUP_DEV_24              0x00004000
1268 +#define TSSETUP_DEV_32              0x00005000
1269 +#define TSSETUP_DEV_64              0x00006000
1270 +#define TSSETUP_DEV_128             0x00007000
1271 +#define TSSETUP_ENABLE              0x00008000
1272 +#define TSSETUP_DLY_MASK            0x03FF0000
1273 +#define TSSETUP_DLY_SHIFT           16
1274 +#define TSSETUP_TDTCT               0x80000000
1275 +
1276 +#define TSMAXMIN_XMIN_MASK          0x000000FF
1277 +#define TSMAXMIN_XMIN_SHIFT         0
1278 +#define TSMAXMIN_YMIN_MASK          0x0000FF00
1279 +#define TSMAXMIN_YMIN_SHIFT         8
1280 +#define TSMAXMIN_XMAX_MASK          0x00FF0000
1281 +#define TSMAXMIN_XMAX_SHIFT         16
1282 +#define TSMAXMIN_YMAX_MASK          0xFF000000
1283 +#define TSMAXMIN_YMAX_SHIFT         24
1284 +
1285 +#define TSXYRESULT_X_MASK           0x00000FFF
1286 +#define TSXYRESULT_X_SHIFT          0
1287 +#define TSXYRESULT_AD_MASK          0x0000FFFF
1288 +#define TSXYRESULT_AD_SHIFT         0
1289 +#define TSXYRESULT_Y_MASK           0x0FFF0000
1290 +#define TSXYRESULT_Y_SHIFT          16
1291 +#define TSXYRESULT_SDR              0x80000000
1292 +
1293 +#define TSX_SAMPLE_MASK             0x00003FFF
1294 +#define TSX_SAMPLE_SHIFT            0x00
1295 +#define TSY_SAMPLE_MASK             0x3FFF0000
1296 +#define TSY_SAMPLE_SHIFT            0x10
1297 +
1298 +#define TSSETUP2_TINT               0x00000001
1299 +#define TSSETUP2_NICOR              0x00000002
1300 +#define TSSETUP2_PINT               0x00000004
1301 +#define TSSETUP2_PENSTS             0x00000008
1302 +#define TSSETUP2_PINTEN             0x00000010
1303 +#define TSSETUP2_DEVINT             0x00000020
1304 +#define TSSETUP2_DINTEN             0x00000040
1305 +#define TSSETUP2_DTMEN              0x00000080
1306 +#define TSSETUP2_DISDEV             0x00000100
1307 +#define TSSETUP2_NSIGND             0x00000200
1308 +#define TSSETUP2_S28EN              0x00000400
1309 +#define TSSETUP2_RINTEN             0x00000800
1310 +
1311 +#define TSXYRESULT_SDR             0x80000000
1312 +
1313 +/*
1314 + *-----------------------------------------------------------------------------
1315 + *-----------------------------------------------------------------------------
1316 + */
1317 +
1318 +
1319 +#endif /* _REGS_TOUCH_H_ */