diff options
Diffstat (limited to 'target/linux/ep93xx/patches-2.6.30/006-ep93xx-touchscreen.patch')
| -rw-r--r-- | target/linux/ep93xx/patches-2.6.30/006-ep93xx-touchscreen.patch | 1319 |
1 files changed, 0 insertions, 1319 deletions
diff --git a/target/linux/ep93xx/patches-2.6.30/006-ep93xx-touchscreen.patch b/target/linux/ep93xx/patches-2.6.30/006-ep93xx-touchscreen.patch deleted file mode 100644 index 6a0d5dbfd6..0000000000 --- a/target/linux/ep93xx/patches-2.6.30/006-ep93xx-touchscreen.patch +++ /dev/null @@ -1,1319 +0,0 @@ -Index: linux-2.6.30.9/drivers/input/touchscreen/Kconfig -=================================================================== ---- linux-2.6.30.9.orig/drivers/input/touchscreen/Kconfig 2009-11-24 21:00:18.000000000 +0100 -+++ linux-2.6.30.9/drivers/input/touchscreen/Kconfig 2009-11-24 21:00:45.000000000 +0100 -@@ -161,6 +161,10 @@ - module will be called wacom_w8001. - - -+config TOUCHSCREEN_EP93XX -+ tristate "EP93xx Touchscreen" -+ depends on ARM && INPUT && ARCH_EP93XX -+ - config TOUCHSCREEN_MTOUCH - tristate "MicroTouch serial touchscreens" - select SERIO -Index: linux-2.6.30.9/drivers/input/touchscreen/Makefile -=================================================================== ---- linux-2.6.30.9.orig/drivers/input/touchscreen/Makefile 2009-11-24 21:00:18.000000000 +0100 -+++ linux-2.6.30.9/drivers/input/touchscreen/Makefile 2009-11-24 21:00:45.000000000 +0100 -@@ -14,6 +14,7 @@ - obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o - obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o - obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o -+obj-$(CONFIG_TOUCHSCREEN_EP93XX) += ep93xx_ts.o - obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o - obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o - obj-$(CONFIG_TOUCHSCREEN_MIGOR) += migor_ts.o -Index: linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.c 2009-11-24 21:09:48.000000000 +0100 -@@ -0,0 +1,1117 @@ -+/* -+ * linux/drivers/input/touchscreen/ep93xx_ts.c -+ * -+ * Copyright (C) 2003-2004 Cirrus Corp. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include <linux/module.h> -+#include <linux/types.h> -+#include <linux/delay.h> -+#include <linux/wait.h> -+#include <linux/fs.h> -+#include <linux/sched.h> -+#include <linux/poll.h> -+#include <linux/miscdevice.h> -+#include <linux/init.h> -+#include <linux/compiler.h> -+#include <linux/timer.h> -+#include <linux/interrupt.h> -+#include <linux/syscalls.h> -+#include <linux/input.h> -+#include <asm/irq.h> -+#include <mach/hardware.h> -+#include <asm/io.h> -+ -+#define TOUCH_OFFSET 0x100000 -+#define TOUCH_BASE (EP93XX_APB_VIRT_BASE|TOUCH_OFFSET) -+#define TSSetup (TOUCH_BASE+0x00) /* R/W touchscreen controller setup control register. */ -+#define TSXYMaxMin (TOUCH_BASE+0x04) /* R/W touchscreen controller max/min register. */ -+#define TSXYResult (TOUCH_BASE+0x08) /* R touchscreen controller result register. */ -+#define TSDischarge (TOUCH_BASE+0x0C) /* LOCKED R/W touchscreen Switch Matrix control register. */ -+#define TSXSample (TOUCH_BASE+0x10) /* LOCKED R/W touchscreen Switch Matrix control register. */ -+#define TSYSample (TOUCH_BASE+0x14) /* LOCKED R/W touchscreen Switch Matrix control register. */ -+#define TSDirect (TOUCH_BASE+0x18) /* LOCKED R/W touchscreen Switch Matrix control register. */ -+#define TSDetect (TOUCH_BASE+0x1C) /* LOCKED R/W touchscreen Switch Matrix control register. */ -+#define TSSWLock (TOUCH_BASE+0x20) /* NA R/W touchscreen software lock register. */ -+#define TSSetup2 (TOUCH_BASE+0x24) /* R/W touchscreen setup control register #2. */ -+ -+// -+// To customize for a new touchscreen, there are various macros that -+// have to be set. If you allow UART_HACK_DEBUG to be defined, you -+// will get real time ts data scrolling up your serial terminal -+// screen that will help you empirically determine good values for these. -+// -+ -+// -+// These are used as trigger levels to know when we have pen up/down -+// -+// The rules: -+// 1. TS_HEAVY_INV_PRESSURE < TS_LIGHT_INV_PRESSURE because these -+// are Inverse pressure. -+// 2. Any touch lighter than TS_LIGHT_INV_PRESSURE is a pen up. -+// 3. Any touch heavier than TS_HEAVY_INV_PRESSURE is a pen down. -+// -+#define TS_HEAVY_INV_PRESSURE 0xFE0 //C00 -+#define TS_LIGHT_INV_PRESSURE 0xFFF //e00 -+ -+// -+// If the x, y, or inverse pressure changes more than these values -+// between two succeeding points, the point is not reported. -+// -+#define TS_MAX_VALID_XY_CHANGE 0x300 -+#define TS_MAX_VALID_PRESSURE_CHANGE 0x100 -+ -+// -+// This is the minimum Z1 Value that is valid. -+// -+#define MIN_Z1_VALUE 0x50 -+ -+// -+// Settling delay for taking each ADC measurement. Increase this -+// if ts is jittery. -+// -+#define EP93XX_TS_ADC_DELAY_USEC 2000 -+ -+// -+// Delay between TS points. -+// -+#define EP93XX_TS_PER_POINT_DELAY_USEC 10000 -+ -+//----------------------------------------------------------------------------- -+// Debug messaging thru the UARTs -+//----------------------------------------------------------------------------- -+/* -+ * Hello there! Are you trying to get this driver to work with a new -+ * touschscreen? Turn this on and you will get useful info coming -+ * out of your serial port. -+ */ -+/* #define PRINT_CALIBRATION_FACTORS */ -+#ifdef PRINT_CALIBRATION_FACTORS -+#define UART_HACK_DEBUG 1 -+int iMaxX=0, iMaxY=0, iMinX = 0xfff, iMinY = 0xfff; -+#endif -+ -+/* -+ * For debugging, let's spew messages out serial port 1 or 3 at 57,600 baud. -+ */ -+/* #define UART_HACK_DEBUG 1 */ -+#if 0 -+#ifdef UART_HACK_DEBUG -+static char szBuf[256]; -+void UARTWriteString(char * msg); -+#define DPRINTK( x... ) \ -+ sprintf( szBuf, ##x ); \ -+ UARTWriteString( szBuf ); -+#else -+static char szBuf[256]; -+#define DPRINTK( x... ) \ -+ sprintf( szBuf, ##x ); \ -+ printk( szBuf ); -+#endif -+#endif // 0 -+#define DPRINTK( x... ) -+ -+//----------------------------------------------------------------------------- -+// A few more macros... -+//----------------------------------------------------------------------------- -+#define TSSETUP_DEFAULT ( TSSETUP_NSMP_32 | TSSETUP_DEV_64 | \ -+ ((128<<TSSETUP_SDLY_SHIFT) & TSSETUP_SDLY_MASK) | \ -+ ((128<<TSSETUP_DLY_SHIFT) & TSSETUP_DLY_MASK) ) -+ -+#define TSSETUP2_DEFAULT (TSSETUP2_NSIGND) -+ -+// -+// For now, we use one of the minor numbers from the local/experimental -+// range. -+// -+#define EP93XX_TS_MINOR 240 -+ -+//----------------------------------------------------------------------------- -+// Static Declarations -+//----------------------------------------------------------------------------- -+static unsigned int guiLastX, guiLastY; -+static unsigned int guiLastInvPressure; -+ -+struct TouchScreenSample -+{ -+ int currentX; -+ int currentY; -+ int currentButton; -+ int currentPressure; -+ struct timeval currentTime; -+}; -+ -+// -+// This must match the structure in tslib. -+// -+struct ts_sample { -+ int x; -+ int y; -+ unsigned int pressure; -+ struct timeval tv; -+}; -+ -+ -+static struct TouchScreenSample gSample; -+ -+// static int currentX, currentY, currentButton; -+// static int gPressure; -+// static struct timeval gtime; -+ -+static int bFreshTouchData; -+static int bCurrentPenDown; -+ -+ -+ -+static DECLARE_WAIT_QUEUE_HEAD(queue); -+static DECLARE_MUTEX(open_sem); -+static spinlock_t event_buffer_lock = SPIN_LOCK_UNLOCKED; -+static struct fasync_struct *ep93xx_fasync; -+ -+//----------------------------------------------------------------------------- -+// Typedef Declarations -+//----------------------------------------------------------------------------- -+typedef enum { -+ TS_MODE_UN_INITIALIZED, -+ TS_MODE_HARDWARE_SCAN, -+ TS_MODE_SOFT_SCAN -+} ts_mode_t; -+ -+static ts_mode_t gScanningMode; -+ -+typedef enum{ -+ TS_STATE_STOPPED = 0, -+ TS_STATE_Z1, -+ TS_STATE_Z2, -+ TS_STATE_Y, -+ TS_STATE_X, -+ TS_STATE_DONE -+} ts_states_t; -+ -+typedef struct -+{ -+ unsigned int uiX; -+ unsigned int uiY; -+ unsigned int uiZ1; -+ unsigned int uiZ2; -+ ts_states_t state; -+} ts_struct_t; -+ -+static ts_struct_t sTouch; -+ -+/* -+ * From the spec, here's how to set up the touch screen's switch registers. -+ */ -+typedef struct -+{ -+ unsigned int uiDetect; -+ unsigned int uiDischarge; -+ unsigned int uiXSample; -+ unsigned int uiYSample; -+ unsigned int uiSwitchZ1; -+ unsigned int uiSwitchZ2; -+}SwitchStructType; -+ -+// -+// Here's the switch settings for a 4-wire touchscreen. See the spec -+// for how to handle a 4, 7, or 8-wire. -+// -+const static SwitchStructType sSwitchSettings = -+/* s28en=0 -+ * TSDetect TSDischarge TSXSample TSYSample SwitchZ1 SwitchZ2 -+ */ -+ {0x00403604, 0x0007fe04, 0x00081604, 0x00104601, 0x00101601, 0x00101608}; -+ -+ -+//----------------------------------------------------------------------------- -+// Function Declarations -+//----------------------------------------------------------------------------- -+static void ep93xx_ts_set_direct( unsigned int uiADCSwitch ); -+static irqreturn_t ep93xx_ts_isr(int irq, void *dev_id); -+static irqreturn_t ep93xx_timer2_isr(int irq, void *dev_id); -+static void ee93xx_ts_evt_add( int button, int dX, int dY, int Pressure ); -+static ssize_t ep93xx_ts_read(struct file *filp, char *buf, -+ size_t count, loff_t *l); -+static unsigned int ep93xx_ts_poll(struct file *filp, poll_table *wait); -+static int ep93xx_ts_open(struct inode *inode, struct file *filp); -+static int ep93xx_ts_fasync(int fd, struct file *filp, int on); -+static int ep93xx_ts_release(struct inode *inode, struct file *filp); -+static ssize_t ep93xx_ts_write(struct file *file, const char *buffer, -+ size_t count, loff_t *ppos); -+static void ep93xx_ts_setup(void); -+static void ep93xx_ts_shutdown(void); -+int __init ep93xx_ts_init(void); -+void __exit ep93xx_ts_exit(void); -+static unsigned int CalculateInvPressure( void ); -+static unsigned int ADCGetData( unsigned int uiSamples, unsigned int uiMaxDiff); -+static void TS_Soft_Scan_Mode(void); -+static void TS_Hardware_Scan_Mode(void); -+static void ProcessPointData(void); -+static void Set_Timer2_uSec( unsigned int Delay_mSec ); -+static void Stop_Timer2(void); -+ -+ -+ -+//----------------------------------------------------------------------------- -+// Debug stuff... -+//----------------------------------------------------------------------------- -+ -+#ifdef UART_HACK_DEBUG -+ -+// This "array" is a cheap-n-easy way of getting access to the UART registers. -+static unsigned int * const pDebugUART=(unsigned int *)IO_ADDRESS(UART1_BASE); -+//static unsigned int * const pDebugUART=(unsigned int *)IO_ADDRESS(UART3_BASE); -+static int bUartInitialized = 0; -+ -+void SendChar(char value) -+{ -+ // wait for Tx fifo full flag to clear. -+ while (pDebugUART[0x18>>2] & 0x20); -+ -+ // send a char to the uart -+ pDebugUART[0] = value; -+} -+ -+void UARTWriteString(char * msg) -+{ -+ int index = 0; -+ unsigned int uiTemp; -+ -+ //if((pDebugUART[0x14>>2] & 0x1) == 0) -+ if( bUartInitialized == 0 ) -+ { -+ uiTemp = inl(EP93XX_SYSCON_DEVICE_CONFIG); -+ uiTemp |= EP93XX_SYSCON_DEVCFG_U1E; -+ //uiTemp |= EP93XX_SYSCON_DEVCFG_U3E; -+ SysconSetLocked(EP93XX_SYSCON_DEVICE_CONFIG, uiTemp); -+ pDebugUART[0x10>>2] = 0xf; -+ pDebugUART[0xc>>2] = 0; -+ pDebugUART[0x8>>2] = 0x70; -+ pDebugUART[0x14>>2] = 0x1; -+ bUartInitialized = 1; -+ } -+ while (msg[index] != 0) -+ { -+ if (msg[index] == '\n') -+ { -+ SendChar('\r'); -+ SendChar('\n'); -+ } -+ else -+ { -+ SendChar(msg[index]); -+ } -+ index++; -+ } -+} -+#endif // UART_HACK_DEBUG -+ -+/* -+ * ep93xx_ts_isr -+ */ -+static irqreturn_t ep93xx_ts_isr(int irq, void *dev_id) -+{ -+ DPRINTK("isr\n"); -+ -+ // -+ // Note that we don't clear the interrupt here. The interrupt -+ // gets cleared in TS_Soft_Scan_Mode when the TS ENABLE -+ // bit is cleared. -+ // -+ -+ // -+ // Set the ts to manual polling mode and schedule a callback. -+ // That way we can return from the isr in a reasonable amount of -+ // time and process the touch in the callback after a brief delay. -+ // -+ TS_Soft_Scan_Mode(); -+ -+ return(IRQ_HANDLED); -+} -+ -+/* -+ * Save the current ts 'event' in an atomic fashion. -+ */ -+static void ee93xx_ts_evt_add( int buttons, int iX, int iY, int iPressure ) -+{ -+#ifdef PRINT_CALIBRATION_FACTORS -+ if( iX > iMaxX ) iMaxX = iX; -+ if( iX < iMinX ) iMinX = iX; -+ if( iY > iMaxY ) iMaxY = iY; -+ if( iY < iMinY ) iMinY = iY; -+#endif -+ -+ -+ // printk("ee93xx_ts_evt_add\n"); -+ //DPRINTK("cb\n"); -+ /* -+ * Note the event, but use spinlocks to keep it from getting -+ * halfway read if we get interrupted. -+ */ -+ -+ spin_lock(&event_buffer_lock); -+ gSample.currentX = iX; -+ gSample.currentY = iY; -+ gSample.currentButton = buttons; -+ gSample.currentPressure = iPressure; -+ bFreshTouchData = 1; -+ do_gettimeofday(&gSample.currentTime); -+ -+ -+ spin_unlock(&event_buffer_lock); -+ -+ kill_fasync(&ep93xx_fasync, SIGIO, POLL_IN); -+ wake_up_interruptible(&queue); -+ -+} -+ -+ -+static ssize_t ep93xx_ts_read(struct file *filp, char *buf, size_t count, loff_t *l) -+{ -+ -+ unsigned short data[3]; -+ struct ts_sample ts_data; -+ int iReturn = -EFAULT; -+ // printk("ep93xx_ts_read\n"); -+ -+#ifdef PRINT_CALIBRATION_FACTORS -+ static int lala=0; -+ if( bFreshTouchData && (lala++ > 9) ) -+ { -+ DPRINTK("%4d, %4d - range [%4d to %4d],[%4d to %4d]\n", -+ f, currentY, iMinX, iMaxX, iMinY, iMaxY ); -+ lala = 0; -+ } -+#endif -+ if( !bFreshTouchData) -+ { -+ iReturn = 0; -+ } -+ else if( (count == sizeof(data)) ) -+ { -+ spin_lock_irq(&event_buffer_lock); -+ bFreshTouchData = 0; -+ data[0] = gSample.currentX; -+ data[1] = gSample.currentY; -+ data[2] = gSample.currentButton; -+ -+ spin_unlock_irq(&event_buffer_lock); -+ -+ if (copy_to_user(buf, data, sizeof data)) -+ return -EFAULT; -+ -+ count -= sizeof(data); -+ -+ /* return the # of bytes that got read */ -+ iReturn = sizeof(data) ; -+ } -+ else if (count == sizeof(struct ts_sample) ) -+ { -+ spin_lock_irq(&event_buffer_lock); -+ bFreshTouchData = 0; -+ ts_data.x = gSample.currentX; -+ ts_data.y = gSample.currentY; -+ ts_data.pressure = gSample.currentPressure; -+ ts_data.tv = gSample.currentTime; -+ spin_unlock_irq(&event_buffer_lock); -+ -+ if (copy_to_user(buf, &ts_data, sizeof(struct ts_sample))) -+ { -+ iReturn = -EFAULT; -+ } -+ else -+ { -+ count -= sizeof(ts_data); -+ iReturn = sizeof(ts_data); -+ } -+ -+ } -+ -+ return iReturn; -+} -+ -+static unsigned int ep93xx_ts_poll(struct file *filp, poll_table *wait) -+{ -+ // printk("ep93xx_ts_poll\n"); -+ poll_wait(filp, &queue, wait); -+ -+ if( bFreshTouchData ) -+ { -+ return POLLIN | POLLRDNORM; -+ } -+ -+ return 0; -+} -+ -+static int ep93xx_ts_open(struct inode *inode, struct file *filp) -+{ -+ printk("ep93xx_ts_open"); -+ -+ if( down_trylock(&open_sem) ) -+ { -+ return -EBUSY; -+ } -+ -+ ep93xx_ts_setup(); -+ -+ return 0; -+} -+ -+/* -+ * Asynchronous I/O support. -+ */ -+static int ep93xx_ts_fasync(int fd, struct file *filp, int on) -+{ -+ int retval; -+ -+ retval = fasync_helper(fd, filp, on, &ep93xx_fasync); -+ if (retval < 0) -+ { -+ return retval; -+ } -+ -+ return 0; -+} -+ -+static int ep93xx_ts_release(struct inode *inode, struct file *filp) -+{ -+ Stop_Timer2(); -+ -+ /* -+ * Call our async I/O support to request that this file -+ * cease to be used for async I/O. -+ */ -+ ep93xx_ts_fasync(-1, filp, 0); -+ -+ ep93xx_ts_shutdown(); -+ -+ up(&open_sem); -+ -+ return 0; -+} -+ -+static ssize_t ep93xx_ts_write(struct file *file, const char *buffer, size_t count, -+ loff_t *ppos) -+{ -+ return -EINVAL; -+} -+ -+ -+static int ep93xx_ts_ioctl(struct inode *inode, struct file *file, uint command, ulong u) -+{ -+ static const int version = EV_VERSION; -+ static const u_int32_t bit =(1 << EV_ABS); -+ static const u_int32_t absbit = (1 << ABS_X) | (1 << ABS_Y) | (1 << ABS_PRESSURE); -+ int iReturn ; -+ int i = 0; -+ -+ switch(command) -+ { -+ case EVIOCGVERSION: -+ DPRINTK("ep93xx_ts_ioctl command = EVIOCGVERSION\r\n"); -+ i = copy_to_user((void __user *)u, (void *)version, sizeof(version)); -+ iReturn = i ? -EFAULT : 0; -+ break; -+ -+ case EVIOCGBIT(0,sizeof(u_int32_t) * 8) : -+ DPRINTK("ep93xx_ts_ioctl command = EVIOCGBIT(0,sizeof(uint32) * 8)\r\n"); -+ i = copy_to_user((void __user *)u, (void *)bit, sizeof(bit)); -+ iReturn = i ? -EFAULT : 0; -+ break; -+ -+ case EVIOCGBIT(EV_ABS, sizeof(absbit) * 8): -+ DPRINTK("ep93xx_ts_ioctl command = EVIOCGBIT(0,sizeof(uint32) * 8)\r\n"); -+ copy_to_user((void __user *)u, (void *)absbit, sizeof(absbit)); -+ iReturn = i ? -EFAULT : 0; -+ break; -+ default: -+ DPRINTK(" ep93xx_ts_ioctl unknown command = %d\n",u); -+ iReturn = -1; -+ break; -+ } -+ -+ return iReturn; -+} -+ -+static struct file_operations ep93xx_ts_fops = { -+ owner: THIS_MODULE, -+ read: ep93xx_ts_read, -+ write: ep93xx_ts_write, -+ poll: ep93xx_ts_poll, -+ open: ep93xx_ts_open, -+ ioctl: ep93xx_ts_ioctl, -+ release: ep93xx_ts_release, -+ fasync: ep93xx_ts_fasync, -+}; -+ -+static struct miscdevice ep93xx_ts_miscdev = -+{ -+ EP93XX_TS_MINOR, -+ "ep93xx_ts", -+ &ep93xx_ts_fops -+}; -+ -+void ep93xx_ts_setup(void) -+{ -+ unsigned int uiKTDIV, uiTSXYMaxMin; -+ // printk("ep93xx_hw_setup\n"); -+ -+ /* -+ * Set the TSEN bit in KTDIV so that we are enabling the clock -+ * for the touchscreen. -+ */ -+ uiKTDIV = inl(SYSCON_KTDIV); -+ uiKTDIV |= SYSCON_KTDIV_TSEN; -+ SysconSetLocked( SYSCON_KTDIV, uiKTDIV ); -+ -+ // -+ // Program the TSSetup and TSSetup2 registers. -+ // -+ outl( TSSETUP_DEFAULT, TSSetup ); -+ outl( TSSETUP2_DEFAULT, TSSetup2 ); -+ -+ // -+ // Set the the touch settings. -+ // -+ outl( 0xaa, TSSWLock ); -+ outl( sSwitchSettings.uiDischarge, TSDirect ); -+ -+ outl( 0xaa, TSSWLock ); -+ outl( sSwitchSettings.uiDischarge, TSDischarge ); -+ -+ outl( 0xaa, TSSWLock ); -+ outl( sSwitchSettings.uiSwitchZ1, TSXSample ); -+ -+ outl( 0xaa, TSSWLock ); -+ outl( sSwitchSettings.uiSwitchZ2, TSYSample ); -+ -+ outl( 0xaa, TSSWLock ); -+ outl( sSwitchSettings.uiDetect, TSDetect ); -+ -+ // -+ // X,YMin set to 0x40 = have to drag that many pixels for a new irq. -+ // X,YMax set to 0x40 = 1024 pixels is the maximum movement within the -+ // time scan limit. -+ // -+ uiTSXYMaxMin = (50 << TSMAXMIN_XMIN_SHIFT) & TSMAXMIN_XMIN_MASK; -+ uiTSXYMaxMin |= (50 << TSMAXMIN_YMIN_SHIFT) & TSMAXMIN_YMIN_MASK; -+ uiTSXYMaxMin |= (0xff << TSMAXMIN_XMAX_SHIFT) & TSMAXMIN_XMAX_MASK; -+ uiTSXYMaxMin |= (0xff << TSMAXMIN_YMAX_SHIFT) & TSMAXMIN_YMAX_MASK; -+ outl( uiTSXYMaxMin, TSXYMaxMin ); -+ -+ bCurrentPenDown = 0; -+ bFreshTouchData = 0; -+ guiLastX = 0; -+ guiLastY = 0; -+ guiLastInvPressure = 0xffffff; -+ -+ // -+ // Enable the touch screen scanning engine. -+ // -+ TS_Hardware_Scan_Mode(); -+} -+ -+/* -+ * ep93xx_ts_shutdown -+ * -+ */ -+static void -+ep93xx_ts_shutdown(void) -+{ -+ unsigned int uiKTDIV; -+ -+ DPRINTK("ep93xx_ts_shutdown\n"); -+ -+ sTouch.state = TS_STATE_STOPPED; -+ Stop_Timer2(); -+ -+ /* -+ * Disable the scanning engine. -+ */ -+ outl( 0, TSSetup ); -+ outl( 0, TSSetup2 ); -+ -+ /* -+ * Clear the TSEN bit in KTDIV so that we are disabling the clock -+ * for the touchscreen. -+ */ -+ uiKTDIV = inl(SYSCON_KTDIV); -+ uiKTDIV &= ~SYSCON_KTDIV_TSEN; -+ SysconSetLocked( SYSCON_KTDIV, uiKTDIV ); -+ -+} /* ep93xx_ts_shutdown */ -+ -+static irqreturn_t ep93xx_timer2_isr(int irq, void *dev_id) -+{ -+ DPRINTK("%d", (int)sTouch.state ); -+ -+ switch( sTouch.state ) -+ { -+ case TS_STATE_STOPPED: -+ TS_Hardware_Scan_Mode(); -+ break; -+ -+ // -+ // Get the Z1 value for pressure measurement and set up -+ // the switch register for getting the Z2 measurement. -+ // -+ case TS_STATE_Z1: -+ Set_Timer2_uSec( EP93XX_TS_ADC_DELAY_USEC ); -+ sTouch.uiZ1 = ADCGetData( 2, 200 ); -+ ep93xx_ts_set_direct( sSwitchSettings.uiSwitchZ2 ); -+ sTouch.state = TS_STATE_Z2; -+ break; -+ -+ // -+ // Get the Z2 value for pressure measurement and set up -+ // the switch register for getting the Y measurement. -+ // -+ case TS_STATE_Z2: -+ sTouch.uiZ2 = ADCGetData( 2, 200 ); -+ ep93xx_ts_set_direct( sSwitchSettings.uiYSample ); -+ sTouch.state = TS_STATE_Y; -+ break; -+ -+ // -+ // Get the Y value and set up the switch register for -+ // getting the X measurement. -+ // -+ case TS_STATE_Y: -+ sTouch.uiY = ADCGetData( 4, 20 ); -+ ep93xx_ts_set_direct( sSwitchSettings.uiXSample ); -+ sTouch.state = TS_STATE_X; -+ break; -+ -+ // -+ // Read the X value. This is the last of the 4 adc values -+ // we need so we continue on to process the data. -+ // -+ case TS_STATE_X: -+ Stop_Timer2(); -+ -+ sTouch.uiX = ADCGetData( 4, 20 ); -+ -+ outl( 0xaa, TSSWLock ); -+ outl( sSwitchSettings.uiDischarge, TSDirect ); -+ -+ sTouch.state = TS_STATE_DONE; -+ -+ /* -+ * Process this set of ADC readings. -+ */ -+ ProcessPointData(); -+ -+ break; -+ -+ -+ // -+ // Shouldn't get here. But if we do, we can recover... -+ // -+ case TS_STATE_DONE: -+ TS_Hardware_Scan_Mode(); -+ break; -+ } -+ -+ // -+ // Clear the timer2 interrupt. -+ // -+ outl( 1, TIMER2CLEAR ); -+ return(IRQ_HANDLED); -+} -+ -+/*--------------------------------------------------------------------- -+ * ProcessPointData -+ * -+ * This routine processes the ADC data into usable point data and then -+ * puts the driver into hw or sw scanning mode before returning. -+ * -+ * We calculate inverse pressure (lower number = more pressure) then -+ * do a hystheresis with the two pressure values 'light' and 'heavy'. -+ * -+ * If we are above the light, we have pen up. -+ * If we are below the heavy we have pen down. -+ * As long as the pressure stays below the light, pen stays down. -+ * When we get above the light again, pen goes back up. -+ * -+ */ -+static void ProcessPointData(void) -+{ -+ int bValidPoint = 0; -+ unsigned int uiXDiff, uiYDiff, uiInvPressureDiff; -+ unsigned int uiInvPressure; -+ -+ // -+ // Calculate the current pressure. -+ // -+ uiInvPressure = CalculateInvPressure(); -+ -+ DPRINTK(" X=0x%x, Y=0x%x, Z1=0x%x, Z2=0x%x, InvPressure=0x%x", -+ sTouch.uiX, sTouch.uiY, sTouch.uiZ1, sTouch.uiZ2, uiInvPressure ); -+ -+ // -+ // If pen pressure is so light that it is greater than the 'max' setting -+ // then we consider this to be a pen up. -+ // -+ if( uiInvPressure >= TS_LIGHT_INV_PRESSURE ) -+ { -+ DPRINTK(" -- up \n"); -+ bCurrentPenDown = 0; -+ ee93xx_ts_evt_add( 0, guiLastX, guiLastY, 0 ); -+ TS_Hardware_Scan_Mode(); -+ return; -+ } -+ -+ // -+ // Hystheresis: -+ // If the pen pressure is hard enough to be less than the 'min' OR -+ // the pen is already down and is still less than the 'max'... -+ // -+ if( (uiInvPressure < TS_HEAVY_INV_PRESSURE) || -+ ( bCurrentPenDown && (uiInvPressure < TS_LIGHT_INV_PRESSURE) ) ) -+ { -+ if( bCurrentPenDown ) -+ { -+ // -+ // If pen was previously down, check the difference between -+ // the last sample and this one... if the difference between -+ // samples is too great, ignore the sample. -+ // -+ uiXDiff = abs(guiLastX - sTouch.uiX); -+ uiYDiff = abs(guiLastY - sTouch.uiY); -+ uiInvPressureDiff = abs(guiLastInvPressure - uiInvPressure); -+ -+ if( (uiXDiff < TS_MAX_VALID_XY_CHANGE) && (uiYDiff < TS_MAX_VALID_XY_CHANGE) && -+ (uiInvPressureDiff < TS_MAX_VALID_PRESSURE_CHANGE) ) -+ { -+ DPRINTK(" -- valid(two) \n"); -+ bValidPoint = 1; -+ } -+ else -+ { -+ DPRINTK(" -- INvalid(two) \n"); -+ } -+ } -+ else -+ { -+ DPRINTK(" -- valid \n"); -+ bValidPoint = 1; -+ } -+ -+ /* -+ * If either the pen was put down or dragged make a note of it. -+ */ -+ if( bValidPoint ) -+ { -+ guiLastX = sTouch.uiX; -+ guiLastY = sTouch.uiY; -+ guiLastInvPressure = uiInvPressure; -+ bCurrentPenDown = 1; -+ ee93xx_ts_evt_add( 1, sTouch.uiX, sTouch.uiY, (0x7000000 /uiInvPressure) ); -+ } -+ -+ TS_Soft_Scan_Mode(); -+ return; -+ } -+ -+ DPRINTK(" -- fallout \n"); -+ TS_Hardware_Scan_Mode(); -+} -+ -+static void ep93xx_ts_set_direct( unsigned int uiADCSwitch ) -+{ -+ unsigned int uiResult; -+ -+ // -+ // Set the switch settings in the direct register. -+ // -+ outl( 0xaa, TSSWLock ); -+ outl( uiADCSwitch, TSDirect ); -+ -+ // -+ // Read and throw away the first sample. -+ // -+ do { -+ uiResult = inl(TSXYResult); -+ } while( !(uiResult & TSXYRESULT_SDR) ); -+ -+} -+ -+static unsigned int ADCGetData -+( -+ unsigned int uiSamples, -+ unsigned int uiMaxDiff -+) -+{ -+ unsigned int uiResult, uiValue, uiCount, uiLowest, uiHighest, uiSum, uiAve; -+ -+ do -+ { -+ // -+ //Initialize our values. -+ // -+ uiLowest = 0xfffffff; -+ uiHighest = 0; -+ uiSum = 0; -+ -+ for( uiCount = 0 ; uiCount < uiSamples ; uiCount++ ) -+ { -+ // -+ // Read the touch screen four more times and average. -+ // -+ do { -+ uiResult = inl(TSXYResult); -+ } while( !(uiResult & TSXYRESULT_SDR) ); -+ -+ uiValue = (uiResult & TSXYRESULT_AD_MASK) >> TSXYRESULT_AD_SHIFT; -+ uiValue = ((uiValue >> 4) + ((1 + TSXYRESULT_X_MASK)>>1)) & TSXYRESULT_X_MASK; -+ -+ // -+ // Add up the values. -+ // -+ uiSum += uiValue; -+ -+ // -+ // Get the lowest and highest values. -+ // -+ if( uiValue < uiLowest ) -+ { -+ uiLowest = uiValue; -+ } -+ if( uiValue > uiHighest ) -+ { -+ uiHighest = uiValue; -+ } -+ } -+ -+ } while( (uiHighest - uiLowest) > uiMaxDiff ); -+ -+ // -+ // Calculate the Average value. -+ // -+ uiAve = uiSum / uiSamples; -+ -+ return uiAve; -+} -+ -+//**************************************************************************** -+// CalculateInvPressure -+//**************************************************************************** -+// Is the Touch Valid. Touch is not valid if the X or Y value is not -+// in range and the pressure is not enough. -+// -+// Touch resistance can be measured by the following formula: -+// -+// Rx * X * Z2 -+// Rtouch = --------- * (-- - 1) -+// 4096 Z1 -+// -+// This is simplified in the ration of Rtouch to Rx. The lower the value, the -+// higher the pressure. -+// -+// Z2 -+// InvPressure = X * (-- - 1) -+// Z1 -+// -+static unsigned int CalculateInvPressure(void) -+{ -+ unsigned int uiInvPressure; -+ -+ // -+ // Check to see if the point is valid. -+ // -+ if( sTouch.uiZ1 < MIN_Z1_VALUE ) -+ { -+ uiInvPressure = 0x10000; -+ } -+ -+ // -+ // Can omit the pressure calculation if you need to get rid of the division. -+ // -+ else -+ { -+ uiInvPressure = ((sTouch.uiX * sTouch.uiZ2) / sTouch.uiZ1) - sTouch.uiX; -+ } -+ -+ return uiInvPressure; -+} -+ -+ -+ -+//**************************************************************************** -+// TS_Hardware_Scan_Mode -+//**************************************************************************** -+// Enables the ep93xx ts scanning engine so that when the pen goes down -+// we will get an interrupt. -+// -+// -+static void TS_Hardware_Scan_Mode(void) -+{ -+ unsigned int uiDevCfg; -+ -+ DPRINTK("S\n"); -+ -+ // -+ // Disable the soft scanning engine. -+ // -+ sTouch.state = TS_STATE_STOPPED; -+ Stop_Timer2(); -+ -+ // -+ // Clear the TIN (Touchscreen INactive) bit so we can go to -+ // automatic scanning mode. -+ // -+ uiDevCfg = inl( EP93XX_SYSCON_DEVICE_CONFIG ); -+ SysconSetLocked( EP93XX_SYSCON_DEVICE_CONFIG, (uiDevCfg & ~EP93XX_SYSCON_DEVCFG_TIN) ); -+ -+ // -+ // Enable the touch screen scanning state machine by setting -+ // the ENABLE bit. -+ // -+ outl( (TSSETUP_DEFAULT | TSSETUP_ENABLE), TSSetup ); -+ -+ // -+ // Set the flag to show that we are in interrupt mode. -+ // -+ gScanningMode = TS_MODE_HARDWARE_SCAN; -+ -+ // -+ // Initialize TSSetup2 register. -+ // -+ outl( TSSETUP2_DEFAULT, TSSetup2 ); -+ -+} -+ -+//**************************************************************************** -+// TS_Soft_Scan_Mode -+//**************************************************************************** -+// Sets the touch screen to manual polling mode. -+// -+// -+static void TS_Soft_Scan_Mode(void) -+{ -+ unsigned int uiDevCfg; -+ -+ DPRINTK("M\n"); -+ -+ if( gScanningMode != TS_MODE_SOFT_SCAN ) -+ { -+ // -+ // Disable the touch screen scanning state machine by clearing -+ // the ENABLE bit. -+ // -+ outl( TSSETUP_DEFAULT, TSSetup ); -+ -+ // -+ // Set the TIN bit so we can do manual touchscreen polling. -+ // -+ uiDevCfg = inl(EP93XX_SYSCON_DEVICE_CONFIG ); -+ SysconSetLocked( EP93XX_SYSCON_DEVICE_CONFIG, (uiDevCfg | EP93XX_SYSCON_DEVCFG_TIN) ); -+ } -+ -+ // -+ // Set the switch register up for the first ADC reading -+ // -+ ep93xx_ts_set_direct( sSwitchSettings.uiSwitchZ1 ); -+ -+ // -+ // Initialize our software state machine to know which ADC -+ // reading to take -+ // -+ sTouch.state = TS_STATE_Z1; -+ -+ // -+ // Set the timer so after a mSec or two settling delay it will -+ // take the first ADC reading. -+ // -+ Set_Timer2_uSec( EP93XX_TS_PER_POINT_DELAY_USEC ); -+ -+ // -+ // Note that we are in sw scanning mode not hw scanning mode. -+ // -+ gScanningMode = TS_MODE_SOFT_SCAN; -+ -+} -+ -+static void Set_Timer2_uSec( unsigned int uiDelay_uSec ) -+{ -+ unsigned int uiClockTicks; -+ -+ /* -+ * Stop timer 2 -+ */ -+ outl( 0, TIMER2CONTROL ); -+ -+ uiClockTicks = ((uiDelay_uSec * 508) + 999) / 1000; -+ outl( uiClockTicks, TIMER2LOAD ); -+ outl( uiClockTicks, TIMER2VALUE ); -+ -+ /* -+ * Set up Timer 2 for 508 kHz clock and periodic mode. -+ */ -+ outl( 0xC8, TIMER2CONTROL ); -+ -+} -+ -+static void Stop_Timer2(void) -+{ -+ outl( 0, TIMER2CONTROL ); -+} -+ -+/* -+ * Initialization and exit routines -+ */ -+int __init ep93xx_ts_init(void) -+{ -+ int retval; -+ -+ //printk("ep93xx_ts_init\n"); -+ -+ // printk("request Touchscreen interrupt.\n"); -+ retval = request_irq( IRQ_EP93XX_TOUCH, ep93xx_ts_isr, IRQF_DISABLED, "ep93xx_ts", 0); -+ if( retval ) -+ { -+ printk(KERN_WARNING "ep93xx_ts: failed to get touchscreen IRQ\n"); -+ return retval; -+ } -+ -+ // printk("Request Timer interrupt.\n"); -+ retval = request_irq( IRQ_EP93XX_TIMER2, ep93xx_timer2_isr, -+ IRQF_DISABLED, "ep93xx_timer2", 0); -+ if( retval ) -+ { -+ printk(KERN_WARNING "ep93xx_ts: failed to get timer2 IRQ\n"); -+ return retval; -+ } -+ -+ // printk("Register Touchscreen Driver\n"); -+ misc_register(&ep93xx_ts_miscdev); -+ -+ sTouch.state = TS_STATE_STOPPED; -+ gScanningMode = TS_MODE_UN_INITIALIZED; -+ -+ printk(KERN_NOTICE "ep93xx touchscreen driver configured for 4-wire operation\n"); -+ -+ return 0; -+} -+void __exit -+ep93xx_ts_exit(void) -+{ -+ DPRINTK("ep93xx_ts_exit\n"); -+ -+ Stop_Timer2(); -+ -+ free_irq(IRQ_EP93XX_TOUCH, 0); -+ free_irq(IRQ_EP93XX_TIMER2, 0); -+ -+ misc_deregister(&ep93xx_ts_miscdev); -+} -+ -+module_init(ep93xx_ts_init); -+module_exit(ep93xx_ts_exit); -+ -+MODULE_DESCRIPTION("Cirrus EP93xx touchscreen driver"); -+MODULE_SUPPORTED_DEVICE("touchscreen/ep93xx"); -Index: linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.30.9/drivers/input/touchscreen/ep93xx_ts.h 2009-11-24 21:00:45.000000000 +0100 -@@ -0,0 +1,53 @@ -+/*
-+ * ep93xx_ts.h
-+ *
-+ * The contents of this file are subject to the Mozilla Public License
-+ * Version 1.1 (the "License"); you may not use this file except in
-+ * compliance with the License. You may obtain a copy of the License
-+ * at http://www.mozilla.org/MPL/
-+ *
-+ * Software distributed under the License is distributed on an "AS IS"
-+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-+ * the License for the specific language governing rights and
-+ * limitations under the License.
-+ *
-+ * The initial developer of the original code is David A. Hinds
-+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
-+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
-+ *
-+ * Alternatively, the contents of this file may be used under the
-+ * terms of the GNU General Public License version 2 (the "GPL"), in
-+ * which case the provisions of the GPL are applicable instead of the
-+ * above. If you wish to allow the use of your version of this file
-+ * only under the terms of the GPL and not to allow others to use
-+ * your version of this file under the MPL, indicate your decision by
-+ * deleting the provisions above and replace them with the notice and
-+ * other provisions required by the GPL. If you do not delete the
-+ * provisions above, a recipient may use your version of this file
-+ * under either the MPL or the GPL.
-+ */
-+
-+#ifndef _LINUX_EP93XX_TS_H
-+#define _LINUX_EP93XX_TS_H
-+
-+/*touchscreen register defines*/
-+#define SYSCON_KTDIV EP93XX_SYSCON_KEY_TOUCH_CLOCK_DIV
-+#define SYSCON_SWLOCK EP93XX_SYSCON_SWLOCK
-+#define TSSetup EP93XX_TOUCHSCREEN_TSSetup
-+#define TSXYMaxMin EP93XX_TOUCHSCREEN_TSXYMaxMin
-+#define TSXYResult EP93XX_TOUCHSCREEN_TSDischarge
-+#define TSDischarge EP93XX_TOUCHSCREEN_TSDischarge
-+#define TSXSample EP93XX_TOUCHSCREEN_TSXSample
-+#define TSYSample EP93XX_TOUCHSCREEN_TSYSample
-+#define TSDirect EP93XX_TOUCHSCREEN_TSDirect
-+#define TSDetect EP93XX_TOUCHSCREEN_TSDetect
-+#define TSSWLock EP93XX_TOUCHSCREEN_TSSWLock
-+#define TSSetup2 EP93XX_TOUCHSCREEN_TSSetup2
-+
-+
-+//#define SYSCON_DEVCFG EP93XX_SYSCON_DEVICE_CONFIG
-+#define TIMER2CONTROL EP93XX_TIMER2_CONTROL
-+#define TIMER2LOAD EP93XX_TIMER2_LOAD
-+#define TIMER2VALUE EP93XX_TIMER2_VALUE
-+#define TIMER2CLEAR EP93XX_TIMER2_CLEAR
-+#endif
-Index: linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/hardware.h -=================================================================== ---- linux-2.6.30.9.orig/arch/arm/mach-ep93xx/include/mach/hardware.h 2009-11-24 21:00:18.000000000 +0100 -+++ linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/hardware.h 2009-11-24 21:09:21.000000000 +0100 -@@ -7,6 +7,7 @@ - #include "ep93xx-regs.h" - - #define pcibios_assign_all_busses() 0 -+#include "regs_touch.h" - - #include "platform.h" - -Index: linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/regs_touch.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.30.9/arch/arm/mach-ep93xx/include/mach/regs_touch.h 2009-11-24 21:00:45.000000000 +0100 -@@ -0,0 +1,95 @@ -+/*============================================================================= -+ * -+ * FILE: regs_touch.h -+ * -+ * DESCRIPTION: Analog Touchscreen Register Definition -+ * -+ * Copyright Cirrus Logic, 2001-2003 -+ * -+ * 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 -+ *============================================================================= -+ */ -+#ifndef _REGS_TOUCH_H_ -+#define _REGS_TOUCH_H_ -+ -+/* -+ *----------------------------------------------------------------------------- -+ * Individual bit #defines -+ *----------------------------------------------------------------------------- -+ */ -+#define TSSETUP_SDLY_MASK 0x000003FF -+#define TSSETUP_SDLY_SHIFT 0 -+#define TSSETUP_NSMP_4 0x00000000 -+#define TSSETUP_NSMP_8 0x00000400 -+#define TSSETUP_NSMP_16 0x00000800 -+#define TSSETUP_NSMP_32 0x00000C00 -+#define TSSETUP_NSMP_MASK 0x00000C00 -+#define TSSETUP_DEV_4 0x00000000 -+#define TSSETUP_DEV_8 0x00001000 -+#define TSSETUP_DEV_12 0x00002000 -+#define TSSETUP_DEV_16 0x00003000 -+#define TSSETUP_DEV_24 0x00004000 -+#define TSSETUP_DEV_32 0x00005000 -+#define TSSETUP_DEV_64 0x00006000 -+#define TSSETUP_DEV_128 0x00007000 -+#define TSSETUP_ENABLE 0x00008000 -+#define TSSETUP_DLY_MASK 0x03FF0000 -+#define TSSETUP_DLY_SHIFT 16 -+#define TSSETUP_TDTCT 0x80000000 -+ -+#define TSMAXMIN_XMIN_MASK 0x000000FF -+#define TSMAXMIN_XMIN_SHIFT 0 -+#define TSMAXMIN_YMIN_MASK 0x0000FF00 -+#define TSMAXMIN_YMIN_SHIFT 8 -+#define TSMAXMIN_XMAX_MASK 0x00FF0000 -+#define TSMAXMIN_XMAX_SHIFT 16 -+#define TSMAXMIN_YMAX_MASK 0xFF000000 -+#define TSMAXMIN_YMAX_SHIFT 24 -+ -+#define TSXYRESULT_X_MASK 0x00000FFF -+#define TSXYRESULT_X_SHIFT 0 -+#define TSXYRESULT_AD_MASK 0x0000FFFF -+#define TSXYRESULT_AD_SHIFT 0 -+#define TSXYRESULT_Y_MASK 0x0FFF0000 -+#define TSXYRESULT_Y_SHIFT 16 -+#define TSXYRESULT_SDR 0x80000000 -+ -+#define TSX_SAMPLE_MASK 0x00003FFF -+#define TSX_SAMPLE_SHIFT 0x00 -+#define TSY_SAMPLE_MASK 0x3FFF0000 -+#define TSY_SAMPLE_SHIFT 0x10 -+ -+#define TSSETUP2_TINT 0x00000001 -+#define TSSETUP2_NICOR 0x00000002 -+#define TSSETUP2_PINT 0x00000004 -+#define TSSETUP2_PENSTS 0x00000008 -+#define TSSETUP2_PINTEN 0x00000010 -+#define TSSETUP2_DEVINT 0x00000020 -+#define TSSETUP2_DINTEN 0x00000040 -+#define TSSETUP2_DTMEN 0x00000080 -+#define TSSETUP2_DISDEV 0x00000100 -+#define TSSETUP2_NSIGND 0x00000200 -+#define TSSETUP2_S28EN 0x00000400 -+#define TSSETUP2_RINTEN 0x00000800 -+ -+#define TSXYRESULT_SDR 0x80000000 -+ -+/* -+ *----------------------------------------------------------------------------- -+ *----------------------------------------------------------------------------- -+ */ -+ -+ -+#endif /* _REGS_TOUCH_H_ */ |