path: root/packages/linux/simpad/linux-2.6.24-SIMpad-battery-old-way-but-also-with-sysfs.patch

diff -Nur linux-2.6.24.vanilla/drivers/mfd/Makefile linux-2.6.24/drivers/mfd/Makefile
--- linux-2.6.24.vanilla/drivers/mfd/Makefile	2008-01-24 23:58:37.000000000 +0100
+++ linux-2.6.24/drivers/mfd/Makefile	2008-02-20 21:27:39.000000000 +0100
@@ -12,3 +12,7 @@
 ifeq ($(CONFIG_SA1100_ASSABET),y)
 obj-$(CONFIG_MCP_UCB1200)	+= ucb1x00-assabet.o
 endif
+
+ifeq ($(CONFIG_SA1100_SIMPAD),y)
+obj-$(CONFIG_MCP_UCB1200)     += ucb1x00-simpad.o
+endif
diff -Nur linux-2.6.24.vanilla/drivers/mfd/ucb1x00-simpad.c linux-2.6.24/drivers/mfd/ucb1x00-simpad.c
--- linux-2.6.24.vanilla/drivers/mfd/ucb1x00-simpad.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.24/drivers/mfd/ucb1x00-simpad.c	2008-02-20 21:27:39.000000000 +0100
@@ -0,0 +1,226 @@
+/*
+ *  linux/drivers/mfd/ucb1x00-simpad.c
+ *
+ *  Copyright (C) 2001-2003 Russell King, All Rights Reserved.
+ *  2007/03/18 mrdata:
+ *             - adapted ucb1x00-assabet.c
+ *             - transfer ucb1x00-simpad.c from kernel24
+ *               to new structur of kernel26
+ *
+ * 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.
+ *
+ *  We handle the machine-specific bits of the UCB1x00 driver here.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/device.h>
+
+#include <linux/apm-emulation.h>
+
+#include <asm/dma.h>
+
+#include <asm/arch/simpad.h>
+#include <asm/arch-sa1100/simpad_pm.h>
+
+#include "ucb1x00.h"
+#include "ucb1x00-simpad.h"
+
+#define UCB1X00_ATTR(name,input,designation) \
+static ssize_t name##_show(struct class_device *dev, char *buf)		\
+{									\
+	struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);			\
+	int val;							\
+	ucb1x00_adc_enable(ucb);					\
+	val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC); 		\
+	ucb1x00_adc_disable(ucb); 					\
+	return sprintf(buf, "%d\n", CALIBRATE_##designation(val)); 	\
+}									\
+static CLASS_DEVICE_ATTR(name,0444,name##_show,NULL)
+
+UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1, BATTERY);
+UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD2, SUPPLY);
+UCB1X00_ATTR(icharger, UCB_ADC_INP_AD3, CHARGING);
+
+static struct ucb1x00 *ucb_alt;
+
+#define UCB1X00_WERT(name,input,designation) \
+static int ucb1x00_simpad_read_##name(struct ucb1x00 *ucb_alt) 		\
+{									\
+	int val;							\
+	ucb1x00_adc_enable(ucb_alt);					\
+	val = ucb1x00_adc_read(ucb_alt, input, UCB_NOSYNC); 		\
+	ucb1x00_adc_disable(ucb_alt); 					\
+	return CALIBRATE_##designation(val);				\
+}
+
+UCB1X00_WERT(vbatt, UCB_ADC_INP_AD1, BATTERY);
+UCB1X00_WERT(vcharger, UCB_ADC_INP_AD2, SUPPLY);
+UCB1X00_WERT(icharger, UCB_ADC_INP_AD3, CHARGING);
+
+static int ucb1x00_simpad_add(struct ucb1x00_dev *dev)
+{
+	class_device_create_file(&dev->ucb->cdev, &class_device_attr_vbatt);
+	class_device_create_file(&dev->ucb->cdev, &class_device_attr_vcharger);
+	class_device_create_file(&dev->ucb->cdev, &class_device_attr_icharger);
+	ucb_alt = dev->ucb;
+	return 0;
+}
+
+static void ucb1x00_simpad_remove(struct ucb1x00_dev *dev)
+{
+	class_device_remove_file(&dev->ucb->cdev, &class_device_attr_icharger);
+	class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vcharger);
+	class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vbatt);
+}
+
+static struct ucb1x00_driver ucb1x00_simpad_driver = {
+	.add	= ucb1x00_simpad_add,
+	.remove	= ucb1x00_simpad_remove,
+};
+
+static int __init ucb1x00_simpad_init(void)
+{
+	apm_get_power_status = simpad_apm_get_power_status;
+	return ucb1x00_register_driver(&ucb1x00_simpad_driver);
+}
+
+static void __exit ucb1x00_simpad_exit(void)
+{
+	apm_get_power_status = NULL;
+	ucb1x00_unregister_driver(&ucb1x00_simpad_driver);
+}
+
+/****************************************************************************/
+/*  Functions exported for use by the kernel and kernel modules             */
+/****************************************************************************/
+
+int simpad_get_battery(struct simpad_battery_apm *bstat)
+{
+ 	int icharger, vcharger, vbatt;
+
+ 	if ( ucb_alt ) {
+ 		icharger = ucb1x00_simpad_read_icharger( ucb_alt );
+ 		vcharger = ucb1x00_simpad_read_vcharger( ucb_alt );
+ 		vbatt    = ucb1x00_simpad_read_vbatt( ucb_alt );
+ 	} else {
+ 		bstat->ac_status = SIMPAD_AC_STATUS_AC_UNKNOWN;
+		bstat->status = SIMPAD_BATT_STATUS_UNKNOWN;
+		bstat->percentage = 0x64;    // lets say 100%
+		bstat->life = 330;	     // lets say a long time 
+		return 0;
+	}
+
+	/* AC status */
+	bstat->ac_status = SIMPAD_AC_STATUS_AC_OFFLINE;
+	if ( vcharger>MIN_SUPPLY ) {
+		bstat->ac_status = SIMPAD_AC_STATUS_AC_ONLINE;
+	}
+
+	/* charging */
+	bstat->status = 0x0;
+	if ( icharger >= CHARGING_LED_LEVEL ) 
+		bstat->status = SIMPAD_BATT_STATUS_CHARGING;
+
+	if ( vbatt > BATT_LOW )
+		bstat->status |= SIMPAD_BATT_STATUS_HIGH;
+	else if ( vbatt < BATT_CRITICAL )
+		bstat->status |= SIMPAD_BATT_STATUS_CRITICAL;
+	else
+		bstat->status |= SIMPAD_BATT_STATUS_LOW;
+
+	if (bstat->status & SIMPAD_BATT_STATUS_CHARGING) {
+		if (icharger > CHARGING_MAX_LEVEL)
+			icharger = CHARGING_MAX_LEVEL;
+		if (icharger < CHARGING_LED_LEVEL)
+			icharger = CHARGING_LED_LEVEL;
+
+		bstat->percentage = 100 - 100 * (icharger - CHARGING_LED_LEVEL) /
+		(CHARGING_MAX_LEVEL - CHARGING_LED_LEVEL);
+	} else {
+		if (vbatt > BATT_FULL)
+			vbatt = BATT_FULL;
+		if (vbatt < BATT_EMPTY)
+			vbatt = BATT_EMPTY;
+
+		bstat->percentage = 100 * (vbatt - BATT_EMPTY) / (BATT_FULL - BATT_EMPTY);
+	}
+
+	/* let's assume: full load is 7h */
+	/* bstat->life = 420*bstat->percentage/100; */
+	/* mrdata: think, 4h is more realistic */
+	bstat->life = 240*(bstat->percentage)/100;
+
+#if 0
+	printk("get_battery: ac: %02x / ch: %02x /  perc: %02x / life: %d \n",
+	bstat->ac_status, bstat->status,
+	bstat->percentage, bstat->life );
+#endif
+
+	return 0;
+}
+
+void simpad_apm_get_power_status(struct apm_power_info *info)
+{
+	struct simpad_battery_apm bstat;
+	unsigned char ac    = APM_AC_UNKNOWN;
+	unsigned char level = APM_BATTERY_STATUS_UNKNOWN;
+	int status, result;
+
+	result = simpad_get_battery(&bstat);
+	if (result) {
+		printk("%s: unable to access battery information: result=%d\n", __FUNCTION__, result);
+		return;
+	}
+
+	switch (bstat.ac_status) {
+	case SIMPAD_AC_STATUS_AC_OFFLINE:
+		ac = APM_AC_OFFLINE;
+		break;
+	case SIMPAD_AC_STATUS_AC_ONLINE:
+		ac = APM_AC_ONLINE;
+		break;
+	case SIMPAD_AC_STATUS_AC_BACKUP:
+		ac = APM_AC_BACKUP;
+		break;
+	}
+
+	info->ac_line_status = ac;
+
+	status = bstat.status;
+	if (status & (SIMPAD_BATT_STATUS_CHARGING | SIMPAD_BATT_STATUS_CHARGE_MAIN))
+		level = APM_BATTERY_STATUS_CHARGING;
+	else if (status & (SIMPAD_BATT_STATUS_HIGH | SIMPAD_BATT_STATUS_FULL))
+		level = APM_BATTERY_STATUS_HIGH;
+	else if (status & SIMPAD_BATT_STATUS_LOW)
+		level = APM_BATTERY_STATUS_LOW;
+	else if (status & SIMPAD_BATT_STATUS_CRITICAL)
+		level = APM_BATTERY_STATUS_CRITICAL;
+
+	info->battery_status = level;
+	info->battery_flag = info->battery_status;
+
+	info->battery_life = bstat.percentage;
+
+	/* we have a dumb battery - so we know nothing */
+	info->time = bstat.life;
+	info->units = APM_UNITS_MINS;
+
+#if 0
+	printk("apm_get_power: ac: %02x / bs: %02x / bf: %02x / perc: %02x / life: %d\n",
+	       info->ac_line_status, info->battery_status, info->battery_flag,
+	       info->battery_life, info->time );
+#endif
+	return;
+}
+
+module_init(ucb1x00_simpad_init);
+module_exit(ucb1x00_simpad_exit);
+
+
+MODULE_AUTHOR("Juergen Messerer <juergen.messerer@freesurf.ch>");
+MODULE_DESCRIPTION("SIMpad noddy testing only example ADC driver");
+MODULE_LICENSE("GPL");
diff -Nur linux-2.6.24.vanilla/drivers/mfd/ucb1x00-simpad.h linux-2.6.24/drivers/mfd/ucb1x00-simpad.h
--- linux-2.6.24.vanilla/drivers/mfd/ucb1x00-simpad.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.24/drivers/mfd/ucb1x00-simpad.h	2008-02-20 21:27:39.000000000 +0100
@@ -0,0 +1,86 @@
+/*
+ *  linux/drivers/mfd/ucb1x00-simpad.h
+ *
+ *  Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * 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.
+ */
+#ifndef UCB1300_SIMPAD_H
+#define UCB1300_SIMPAD_H
+
+/*
+ * Conversion from AD -> mV
+ * 7.5V = 1023   7.33137mV/Digit
+ *
+ * 400 Units == 9.7V
+ * a     = ADC value
+ * 2007/03/24 mrdata:
+ *            according UCB1300 datasheet ADC error max. 3 LSB
+ *            5-95% of full scale -> 3*7.33137mV = 21.99mV
+ * // old 
+ * 21    = ADC error 
+ * 12600 = Divident to get 2*7.3242 
+ * 860   = Divider to get 2*7.3242
+ * 170   = Voltagedrop over
+ *
+ * // new
+ * 3     = ADC error 
+ * 12610 = Divident to get 2*7.33139
+ * 860   = Divider  to get 2*7.33139
+ * 170   = Voltagedrop over
+ */
+// #define CALIBRATE_BATTERY(a)   ((((a + 21)*12600)/860) + 170)
+#define CALIBRATE_BATTERY(a)   ((((a + 3)*12610)/860) + 170)
+
+/*
+ * We have two types of batteries a small and a large one
+ * To get the right value we to distinguish between those two
+ * 450 Units == 15 V
+ */
+#ifdef SMALL_BATTERY 
+#define CALIBRATE_SUPPLY(a)   (((a) * 1500) / 51)
+#define MIN_SUPPLY            8500 /* Less then 8.5V means no powersupply */
+#else
+#define CALIBRATE_SUPPLY(a)   (((a) * 1500) / 45)
+//#define MIN_SUPPLY            14000 /* Less then 14V means no powersupply */
+#define MIN_SUPPLY            12000 /* Less then 12V means no powersupply */
+#endif
+
+/*
+ * Charging Current 
+ * if value is >= 50 then charging is on
+ */
+// #define CALIBRATE_CHARGING(a)    (((a) * 1000) / (152/4))
+#define CALIBRATE_CHARGING(a)    (a)
+//#define CHARGING_LED_LEVEL     50
+
+#ifdef CONFIG_SA1100_SIMPAD_SINUSPAD
+
+// type small battery
+#define CHARGING_LED_LEVEL     12
+#define CHARGING_MAX_LEVEL     120
+#define BATT_FULL	8100
+#define BATT_LOW	7300
+#define BATT_CRITICAL	6700
+#define BATT_EMPTY	6400
+
+#else // CONFIG_SA1100_SIMPAD_SINUSPAD
+
+// type large battery
+// because of ADC error CHARGING_LED_LEVEL can changed
+// from 27 to 28
+#define CHARGING_LED_LEVEL     27
+#define CHARGING_MAX_LEVEL     265
+// BATT_FULL with SIMPAD_AC_STATUS_AC_OFFLINE
+#define BATT_FULL	8100
+#define BATT_LOW	7400
+#define BATT_CRITICAL	6800
+#define BATT_EMPTY	6500
+
+#endif // CONFIG_SA1100_SIMPAD_SINUSPAD
+
+// int simpad_get_battery(struct simpad_battery_apm *bstat);
+
+#endif
diff -Nur linux-2.6.24.vanilla/include/asm-arm/arch-sa1100/simpad_pm.h linux-2.6.24/include/asm-arm/arch-sa1100/simpad_pm.h
--- linux-2.6.24.vanilla/include/asm-arm/arch-sa1100/simpad_pm.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.24/include/asm-arm/arch-sa1100/simpad_pm.h	2008-02-20 21:27:39.000000000 +0100
@@ -0,0 +1,236 @@
+/*
+* Abstraction interface for microcontroller connection to rest of system
+*
+* Copyright 2003 Peter Pregler
+* Copyright 2000,1 Compaq Computer Corporation.
+*
+* Use consistent with the GNU GPL is permitted,
+* provided that this copyright notice is
+* preserved in its entirety in all copies and derived works.
+*
+* COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
+* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
+* FITNESS FOR ANY PARTICULAR PURPOSE.
+*
+* Author: Peter Pregler (based on work for ipaq by Andrew Christian)
+*
+*/
+
+#ifndef __SIMPAD_HAL_H
+#define __SIMPAD_HAL_H
+
+#include <linux/apm-emulation.h>
+
+struct simpad_battery_apm {
+	unsigned char ac_status;	/* line connected yes/no */
+	unsigned char status;		/* battery loading yes/no */
+	unsigned char percentage;	/* percentage loaded */
+	unsigned short life;		/* life till empty */
+};
+
+extern void simpad_apm_get_power_status(struct apm_power_info *);
+
+// extern int simpad_get_battery(struct simpad_battery_apm *bstat);
+
+/* These should match the apm_bios.h definitions */
+#define SIMPAD_AC_STATUS_AC_OFFLINE      0x00
+#define SIMPAD_AC_STATUS_AC_ONLINE       0x01
+#define SIMPAD_AC_STATUS_AC_BACKUP       0x02   /* What does this mean? */
+#define SIMPAD_AC_STATUS_AC_UNKNOWN      0xff
+
+
+/* These bitfields are rarely "or'd" together */
+#define SIMPAD_BATT_STATUS_HIGH          0x01
+#define SIMPAD_BATT_STATUS_LOW           0x02
+#define SIMPAD_BATT_STATUS_CRITICAL      0x04
+#define SIMPAD_BATT_STATUS_CHARGING      0x08
+#define SIMPAD_BATT_STATUS_CHARGE_MAIN   0x10
+#define SIMPAD_BATT_STATUS_DEAD          0x20   /* Battery will not charge */
+#define SIMPAD_BATT_NOT_INSTALLED        0x20   /* For expansion pack batteries */
+#define SIMPAD_BATT_STATUS_FULL          0x40   /* Battery fully charged (and connected to AC) */
+#define SIMPAD_BATT_STATUS_NOBATT        0x80
+#define SIMPAD_BATT_STATUS_UNKNOWN       0xff
+                                                                                                                                           
+#if 0 // FIXME
+#include <linux/simpad_ts.h>
+
+enum simpad_asset_type {
+	ASSET_TCHAR = 0,
+	ASSET_SHORT,
+	ASSET_LONG
+};
+
+#define TTYPE(_type)           (((unsigned int)_type) << 8)
+#define TCHAR(_len)            (TTYPE(ASSET_TCHAR) | (_len))
+#define TSHORT                 TTYPE(ASSET_SHORT)
+#define TLONG                  TTYPE(ASSET_LONG)
+#define ASSET(_type,_num)      ((((unsigned int)_type)<<16) | (_num))
+
+#define ASSET_HM_VERSION        ASSET( TCHAR(10), 0 )   /* 1.1, 1.2 */
+#define ASSET_SERIAL_NUMBER     ASSET( TCHAR(40), 1 )   /* Unique iPAQ serial number */
+#define ASSET_MODULE_ID         ASSET( TCHAR(20), 2 )   /* E.g., "iPAQ 3700" */    
+#define ASSET_PRODUCT_REVISION  ASSET( TCHAR(10), 3 )   /* 1.0, 2.0 */
+#define ASSET_PRODUCT_ID        ASSET( TSHORT,    4 )   /* 2 = Palm-sized computer */
+#define ASSET_FRAME_RATE        ASSET( TSHORT,    5 )
+#define ASSET_PAGE_MODE         ASSET( TSHORT,    6 )   /* 0 = Flash memory */
+#define ASSET_COUNTRY_ID        ASSET( TSHORT,    7 )   /* 0 = USA */
+#define ASSET_IS_COLOR_DISPLAY  ASSET( TSHORT,    8 )   /* Boolean, 1 = yes */
+#define ASSET_ROM_SIZE          ASSET( TSHORT,    9 )   /* 16, 32 */
+#define ASSET_RAM_SIZE          ASSET( TSHORT,   10 )   /* 32768 */
+#define ASSET_HORIZONTAL_PIXELS ASSET( TSHORT,   11 )   /* 240 */
+#define ASSET_VERTICAL_PIXELS   ASSET( TSHORT,   12 )   /* 320 */
+
+#define ASSET_TYPE(_asset)       (((_asset)&0xff000000)>>24)
+#define ASSET_TCHAR_LEN(_asset)  (((_asset)&0x00ff0000)>>16)
+#define ASSET_NUMBER(_asset)     ((_asset)&0x0000ffff)
+
+#define MAX_TCHAR_LEN 40
+
+struct simpad_asset {
+	unsigned int type;
+	union {
+		unsigned char  tchar[ MAX_TCHAR_LEN ];
+		unsigned short vshort;
+		unsigned long  vlong;
+	} a;
+};
+
+/********************************************************************
+ * Interface to the hardware-type specific functions
+ *
+ * get_version           Read the version number of the microcontroller on the option pack SPI bus
+ * spi_read              Reads from the serial EEPROM memory on the option pack SPI bus
+ * spi_write             Write to the serial EEPROM memory on the option pack SPI bus
+ * get_option_detect     Returns whether or not an option pack is present
+ *
+ * get_thermal_sensor    Return measured temperature of the unit, in units of 0.125 deg C
+ * set_notify_led        Turns on, off, or blinks the Green LED
+ * read_light_sensor     Returns the value of the front light sensor
+ * get_battery           Returns the current voltage and charging state of all batteries
+ * audio_clock           Sets the audio CODEC to run at a particular rate
+ * audio_power           Turns on/off audio CODEC (internally calls audio_clock)
+ * audio_mute            Mutes the audio CODEC
+ * asset_read            Extracts PocketPC-style asset information from persistent memory
+ * backlight_control     Adjusts the backlight level  (only on/off for 3100)
+ *
+ *
+ * iPAQ 3100 only
+ * ==============
+ * codec_control         Reset/mute/control level of 3100 audio codec
+ * contrast_control      Adjusts the contrast level   (only for 3100)
+ *
+ * iPAQ 3600, 3700 only
+ * ====================
+ * eeprom_read           Reads from the asset information on the eeprom of a 3600 (deprecated)
+ * eeprom_write          Writes to the asset information on the eeprom (deprecated)
+ *
+ * The interfaces to the EEPROM functions are maintained only because the simpad_ts driver has
+ * a deprecated ioctl call for them.  They are used internally by the "asset_read" function.
+ *
+ * iPAQ 3800, 3900 only
+ * ====================
+ * set_ebat              Tells enhanced PCMCIA sleeves that this iPAQ can handle 
+ *                       a wider voltage range (applies to 3800, 3900)
+ *
+ *********************************************************************/
+
+struct simpad_hal_ops {
+	/* Functions provided by the underlying hardware */
+	int (*get_version)( struct simpad_ts_version * );
+	int (*eeprom_read)( unsigned short address, unsigned char *data, unsigned short len );
+	int (*eeprom_write)( unsigned short address, unsigned char *data, unsigned short len );
+	int (*get_thermal_sensor)( unsigned short * );
+	int (*set_notify_led)( unsigned char mode, unsigned char duration, 
+			       unsigned char ontime, unsigned char offtime );
+	int (*read_light_sensor)( unsigned char *result );
+	int (*get_battery)( struct simpad_battery * );
+	int (*spi_read)( unsigned short address, unsigned char *data, unsigned short len );
+	int (*spi_write)( unsigned short address, unsigned char *data, unsigned short len );
+	int (*codec_control)( unsigned char, unsigned char );
+	int (*get_option_detect)( int *result );
+	int (*audio_clock)( long samplerate );
+	int (*audio_power)( long samplerate );
+	int (*audio_mute)( int mute );
+	int (*asset_read)( struct simpad_asset *asset );
+	int (*set_ebat)( void );
+
+	/* Functions indirectly provided by the underlying hardware */
+	int (*backlight_control)( enum flite_pwr power, unsigned char level );
+	int (*contrast_control)( unsigned char level );
+
+        /* for module use counting */ 
+        struct module *owner;
+};
+
+/* Used by the device-specific hardware module to register itself */
+extern int  simpad_hal_register_interface( struct simpad_hal_ops *ops );
+extern void simpad_hal_unregister_interface( struct simpad_hal_ops *ops );
+
+/* 
+ * Calls into HAL from the device-specific hardware module
+ * These run at interrupt time 
+ */
+extern void simpad_hal_keypress( unsigned char key );
+extern void simpad_hal_touchpanel( unsigned short x, unsigned short y, int down );
+extern void simpad_hal_option_detect( int present );
+
+/* Callbacks registered by device drivers */
+struct simpad_driver_ops {
+	void (*keypress)( unsigned char key );
+	void (*touchpanel)( unsigned short x, unsigned short y, int down );
+	void (*option_detect)( int present );
+};
+
+extern int  simpad_hal_register_driver( struct simpad_driver_ops * );
+extern void simpad_hal_unregister_driver( struct simpad_driver_ops * );
+
+
+/* Calls into HAL from device drivers and other kernel modules */
+extern void simpad_get_flite( struct simpad_ts_backlight *bl );
+extern void simpad_get_contrast( unsigned char *contrast );
+extern int  simpad_set_flite( enum flite_pwr pwr, unsigned char brightness );
+extern int  simpad_set_contrast( unsigned char contrast );
+extern int  simpad_toggle_frontlight( void );
+
+extern int simpad_apm_get_power_status(unsigned char *ac_line_status, unsigned char *battery_status, 
+				      unsigned char *battery_flag, unsigned char *battery_percentage, 
+				      unsigned short *battery_life);
+
+extern struct simpad_hal_ops *simpad_hal_ops;
+
+/* Do not use this macro in driver files - instead, use the inline functions defined below */
+#define CALL_HAL( f, args... ) \
+        { int __result = -EIO;                             \
+          if ( simpad_hal_ops && simpad_hal_ops->f ) {       \
+                __MOD_INC_USE_COUNT(simpad_hal_ops->owner); \
+                __result = simpad_hal_ops->f(args);         \
+                __MOD_DEC_USE_COUNT(simpad_hal_ops->owner); \
+          }                                                \
+          return __result; }
+
+#define HFUNC  static __inline__ int
+
+/* The eeprom_read/write address + len has a maximum value of 512.  Both must be even numbers */
+HFUNC simpad_eeprom_read( u16 addr, u8 *data, u16 len )  CALL_HAL(eeprom_read,addr,data,len)
+HFUNC simpad_eeprom_write( u16 addr, u8 *data, u16 len)  CALL_HAL(eeprom_write,addr,data,len)
+HFUNC simpad_spi_read( u8 addr, u8 *data, u16 len) 	CALL_HAL(spi_read,addr,data,len)
+HFUNC simpad_spi_write( u8 addr, u8 *data, u16 len) 	CALL_HAL(spi_write,addr,data,len)
+HFUNC simpad_get_version( struct simpad_ts_version *v )   CALL_HAL(get_version,v)
+HFUNC simpad_get_thermal_sensor( u16 *thermal ) 	        CALL_HAL(get_thermal_sensor,thermal)
+HFUNC simpad_set_led( u8 mode, u8 dur, u8 ont, u8 offt ) CALL_HAL(set_notify_led, mode, dur, ont, offt)
+HFUNC simpad_get_light_sensor( u8 *result ) 	        CALL_HAL(read_light_sensor,result)
+HFUNC simpad_get_battery( struct simpad_battery *bat )	CALL_HAL(get_battery,bat)
+HFUNC simpad_get_option_detect( int *result)             CALL_HAL(get_option_detect,result)
+HFUNC simpad_audio_clock( long samplerate )              CALL_HAL(audio_clock,samplerate)
+HFUNC simpad_audio_power( long samplerate )              CALL_HAL(audio_power,samplerate)
+HFUNC simpad_audio_mute( int mute )                      CALL_HAL(audio_mute,mute)
+HFUNC simpad_asset_read( struct simpad_asset *asset )     CALL_HAL(asset_read,asset)
+HFUNC simpad_set_ebat( void )                            CALL_HAL(set_ebat)
+
+/* Don't use these functions directly - rather, call {get,set}_{flite,contrast} */
+	/* Functions indirectly provided by the underlying hardware */
+HFUNC simpad_backlight_control( enum flite_pwr p, u8 v ) CALL_HAL(backlight_control,p,v)
+HFUNC simpad_contrast_control( u8 level )                CALL_HAL(contrast_control,level)
+
+#endif
+#endif