path: root/arch/arm/mach-pxa/sharpsl_pm.c

/*
 * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00
 * series of PDAs
 *
 * Copyright (c) 2004-2005 Richard Purdie
 *
 * Based on code written by Sharp for 2.4 kernels
 *
 * 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.
 *
 */

#undef DEBUG

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/apm-emulation.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/suspend.h>
#include <linux/gpio.h>

#include <asm/mach-types.h>
#include <mach/pm.h>
#include <mach/pxa2xx-regs.h>
#include <mach/regs-rtc.h>
#include <mach/sharpsl_pm.h>

/*
 * Constants
 */
#define SHARPSL_CHARGE_ON_TIME_INTERVAL        (msecs_to_jiffies(1*60*1000))  /* 1 min */
#define SHARPSL_CHARGE_FINISH_TIME             (msecs_to_jiffies(10*60*1000)) /* 10 min */
#define SHARPSL_BATCHK_TIME                    (msecs_to_jiffies(15*1000))    /* 15 sec */
#define SHARPSL_BATCHK_TIME_SUSPEND            (60*10)                        /* 10 min */

#define SHARPSL_WAIT_CO_TIME                   15  /* 15 sec */
#define SHARPSL_WAIT_DISCHARGE_ON              100 /* 100 msec */
#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP   10  /* 10 msec */
#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT   10  /* 10 msec */
#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN   10  /* 10 msec */
#define SHARPSL_CHARGE_WAIT_TIME               15  /* 15 msec */
#define SHARPSL_CHARGE_CO_CHECK_TIME           5   /* 5 msec */
#define SHARPSL_CHARGE_RETRY_CNT               1   /* eqv. 10 min */

/*
 * Prototypes
 */
#ifdef CONFIG_PM
static int sharpsl_off_charge_battery(void);
static int sharpsl_check_battery_voltage(void);
static int sharpsl_fatal_check(void);
#endif
static int sharpsl_check_battery_temp(void);
static int sharpsl_ac_check(void);
static int sharpsl_average_value(int ad);
static void sharpsl_average_clear(void);
static void sharpsl_charge_toggle(struct work_struct *private_);
static void sharpsl_battery_thread(struct work_struct *private_);


/*
 * Variables
 */
struct sharpsl_pm_status sharpsl_pm;
static DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
static DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);



struct battery_thresh sharpsl_battery_levels_acin[] = {
	{ 213, 100},
	{ 212,  98},
	{ 211,  95},
	{ 210,  93},
	{ 209,  90},
	{ 208,  88},
	{ 207,  85},
	{ 206,  83},
	{ 205,  80},
	{ 204,  78},
	{ 203,  75},
	{ 202,  73},
	{ 201,  70},
	{ 200,  68},
	{ 199,  65},
	{ 198,  63},
	{ 197,  60},
	{ 196,  58},
	{ 195,  55},
	{ 194,  53},
	{ 193,  50},
	{ 192,  48},
	{ 192,  45},
	{ 191,  43},
	{ 191,  40},
	{ 190,  38},
	{ 190,  35},
	{ 189,  33},
	{ 188,  30},
	{ 187,  28},
	{ 186,  25},
	{ 185,  23},
	{ 184,  20},
	{ 183,  18},
	{ 182,  15},
	{ 181,  13},
	{ 180,  10},
	{ 179,   8},
	{ 178,   5},
	{   0,   0},
};

struct battery_thresh sharpsl_battery_levels_noac[] = {
	{ 213, 100},
	{ 212,  98},
	{ 211,  95},
	{ 210,  93},
	{ 209,  90},
	{ 208,  88},
	{ 207,  85},
	{ 206,  83},
	{ 205,  80},
	{ 204,  78},
	{ 203,  75},
	{ 202,  73},
	{ 201,  70},
	{ 200,  68},
	{ 199,  65},
	{ 198,  63},
	{ 197,  60},
	{ 196,  58},
	{ 195,  55},
	{ 194,  53},
	{ 193,  50},
	{ 192,  48},
	{ 191,  45},
	{ 190,  43},
	{ 189,  40},
	{ 188,  38},
	{ 187,  35},
	{ 186,  33},
	{ 185,  30},
	{ 184,  28},
	{ 183,  25},
	{ 182,  23},
	{ 181,  20},
	{ 180,  18},
	{ 179,  15},
	{ 178