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Diffstat (limited to 'arch/arm/common/sharpsl_pm.c')
-rw-r--r--arch/arm/common/sharpsl_pm.c859
1 files changed, 0 insertions, 859 deletions
diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c
deleted file mode 100644
index 140f1d721d5..00000000000
--- a/arch/arm/common/sharpsl_pm.c
+++ /dev/null
@@ -1,859 +0,0 @@
-/*
- * 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/timer.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/apm_bios.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/leds.h>
-#include <linux/apm-emulation.h>
-#include <linux/suspend.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <mach/pm.h>
-#include <mach/pxa2xx-regs.h>
-#include <mach/regs-rtc.h>
-#include <mach/sharpsl.h>
-#include <asm/hardware/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;
-DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
-DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
-DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
-
-
-static int get_percentage(int voltage)
-{
- int i = sharpsl_pm.machinfo->bat_levels - 1;
- int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
- struct battery_thresh *thresh;
-
- if (sharpsl_pm.charge_mode == CHRG_ON)
- thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
- else
- thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
-
- while (i > 0 && (voltage > thresh[i].voltage))
- i--;
-
- return thresh[i].percentage;
-}
-
-static int get_apm_status(int voltage)
-{
- int low_thresh, high_thresh;
-
- if (sharpsl_pm.charge_mode == CHRG_ON) {
- high_thresh = sharpsl_pm.machinfo->status_high_acin;
- low_thresh = sharpsl_pm.machinfo->status_low_acin;
- } else {
- high_thresh = sharpsl_pm.machinfo->status_high_noac;
- low_thresh = sharpsl_pm.machinfo->status_low_noac;
- }
-
- if (voltage >= high_thresh)
- return APM_BATTERY_STATUS_HIGH;
- if (voltage >= low_thresh)
- return APM_BATTERY_STATUS_LOW;
- return APM_BATTERY_STATUS_CRITICAL;
-}
-
-void sharpsl_battery_kick(void)
-{
- schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
-}
-EXPORT_SYMBOL(sharpsl_battery_kick);
-
-
-static void sharpsl_battery_thread(struct work_struct *private_)
-{
- int voltage, percent, apm_status, i = 0;
-
- if (!sharpsl_pm.machinfo)
- return;
-
- sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
-
- /* Corgi cannot confirm when battery fully charged so periodically kick! */
- if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
- && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
- schedule_delayed_work(&toggle_charger, 0);
-
- while(1) {
- voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
-
- if (voltage > 0) break;
- if (i++ > 5) {
- voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
- dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
- break;
- }
- }
-
- voltage = sharpsl_average_value(voltage);
- apm_status = get_apm_status(voltage);
- percent = get_percentage(voltage);
-
- /* At low battery voltages, the voltage has a tendency to start
- creeping back up so we try to avoid this here */
- if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) {
- sharpsl_pm.battstat.mainbat_voltage = voltage;
- sharpsl_pm.battstat.mainbat_status = apm_status;
- sharpsl_pm.battstat.mainbat_percent = percent;
- }
-
- dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
- sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
-
-#ifdef CONFIG_BACKLIGHT_CORGI
- /* If battery is low. limit backlight intensity to save power. */
- if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
- && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
- (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
- if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
- sharpsl_pm.machinfo->backlight_limit(1);
- sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
- }
- } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) {
- sharpsl_pm.machinfo->backlight_limit(0);
- sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
- }
-#endif
-
- /* Suspend if critical battery level */
- if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
- && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
- && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
- sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
- dev_err(sharpsl_pm.dev, "Fatal Off\n");
- apm_queue_event(APM_CRITICAL_SUSPEND);
- }
-
- schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
-}
-
-void sharpsl_pm_led(int val)
-{
- if (val == SHARPSL_LED_ERROR) {
- dev_err(sharpsl_pm.dev, "Charging Error!\n");
- } else if (val == SHARPSL_LED_ON) {
- dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
- led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
- } else {
- dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
- led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
- }
-}
-
-static void sharpsl_charge_on(void)
-{
- dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
-
- sharpsl_pm.full_count = 0;
- sharpsl_pm.charge_mode = CHRG_ON;
- schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
- schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
-}
-
-static void sharpsl_charge_off(void)
-{
- dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
-
- sharpsl_pm.machinfo->charge(0);
- sharpsl_pm_led(SHARPSL_LED_OFF);
- sharpsl_pm.charge_mode = CHRG_OFF;
-
- schedule_delayed_work(&sharpsl_bat, 0);
-}
-
-static void sharpsl_charge_error(void)
-{
- sharpsl_pm_led(SHARPSL_LED_ERROR);
- sharpsl_pm.machinfo->charge(0);
- sharpsl_pm.charge_mode = CHRG_ERROR;
-}
-
-static void sharpsl_charge_toggle(struct work_struct *private_)
-{
- dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies);
-
- if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
- sharpsl_charge_off();
- return;
- } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
- sharpsl_charge_error();
- return;
- }
-
- sharpsl_pm_led(SHARPSL_LED_ON);
- sharpsl_pm.machinfo->charge(0);
- mdelay(SHARPSL_CHARGE_WAIT_TIME);
- sharpsl_pm.machinfo->charge(1);
-
- sharpsl_pm.charge_start_time = jiffies;
-}
-
-static void sharpsl_ac_timer(unsigned long data)
-{
- int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
-
- dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin);
-
- sharpsl_average_clear();
- if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
- sharpsl_charge_on();
- else if (sharpsl_pm.charge_mode == CHRG_ON)
- sharpsl_charge_off();
-
- schedule_delayed_work(&sharpsl_bat, 0);
-}
-
-
-irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
-{
- /* Delay the event slightly to debounce */
- /* Must be a smaller delay than the chrg_full_isr below */
- mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
-
- return IRQ_HANDLED;
-}
-
-static void sharpsl_chrg_full_timer(unsigned long data)
-{
- dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
-
- sharpsl_pm.full_count++;
-
- if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
- dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
- if (sharpsl_pm.charge_mode == CHRG_ON)
- sharpsl_charge_off();
- } else if (sharpsl_pm.full_count < 2) {
- dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
- schedule_delayed_work(&toggle_charger, 0);
- } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
- dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
- schedule_delayed_work(&toggle_charger, 0);
- } else {
- sharpsl_charge_off();
- sharpsl_pm.charge_mode = CHRG_DONE;
- dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
- }
-}
-
-/* Charging Finished Interrupt (Not present on Corgi) */
-/* Can trigger at the same time as an AC status change so
- delay until after that has been processed */
-irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
-{
- if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
- return IRQ_HANDLED;
-
- /* delay until after any ac interrupt */
- mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
-
- return IRQ_HANDLED;
-}
-
-irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
-{
- int is_fatal = 0;
-
- if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
- dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
- is_fatal = 1;
- }
-
- if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
- dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
- is_fatal = 1;
- }
-
- if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
- sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
- apm_queue_event(APM_CRITICAL_SUSPEND);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * Maintain an average of the last 10 readings
- */
-#define SHARPSL_CNV_VALUE_NUM 10
-static int sharpsl_ad_index;
-
-static void sharpsl_average_clear(void)
-{
- sharpsl_ad_index = 0;
-}
-
-static int sharpsl_average_value(int ad)
-{
- int i, ad_val = 0;
- static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
-
- if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
- sharpsl_ad_index = 0;
- return ad;
- }
-
- sharpsl_ad[sharpsl_ad_index] = ad;
- sharpsl_ad_index++;
- if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
- for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
- sharpsl_ad[i] = sharpsl_ad[i+1];
- sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
- }
- for (i=0; i < sharpsl_ad_index; i++)
- ad_val += sharpsl_ad[i];
-
- return (ad_val / sharpsl_ad_index);
-}
-
-/*
- * Take an array of 5 integers, remove the maximum and minimum values
- * and return the average.
- */
-static int get_select_val(int *val)
-{
- int i, j, k, temp, sum = 0;
-
- /* Find MAX val */
- temp = val[0];
- j=0;
- for (i=1; i<5; i++) {
- if (temp < val[i]) {
- temp = val[i];
- j = i;
- }
- }
-
- /* Find MIN val */
- temp = val[4];
- k=4;
- for (i=3; i>=0; i--) {
- if (temp > val[i]) {
- temp = val[i];
- k = i;
- }
- }
-
- for (i=0; i<5; i++)
- if (i != j && i != k )
- sum += val[i];
-
- dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]);
-
- return (sum/3);
-}
-
-static int sharpsl_check_battery_temp(void)
-{
- int val, i, buff[5];
-
- /* Check battery temperature */
- for (i=0; i<5; i++) {
- mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
- sharpsl_pm.machinfo->measure_temp(1);
- mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
- buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
- sharpsl_pm.machinfo->measure_temp(0);
- }
-
- val = get_select_val(buff);
-
- dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
- if (val > sharpsl_pm.machinfo->charge_on_temp) {
- printk(KERN_WARNING "Not charging: temperature out of limits.\n");
- return -1;
- }
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int sharpsl_check_battery_voltage(void)
-{
- int val, i, buff[5];
-
- /* disable charge, enable discharge */
- sharpsl_pm.machinfo->charge(0);
- sharpsl_pm.machinfo->discharge(1);
- mdelay(SHARPSL_WAIT_DISCHARGE_ON);
-
- if (sharpsl_pm.machinfo->discharge1)
- sharpsl_pm.machinfo->discharge1(1);
-
- /* Check battery voltage */
- for (i=0; i<5; i++) {
- buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
- mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
- }
-
- if (sharpsl_pm.machinfo->discharge1)
- sharpsl_pm.machinfo->discharge1(0);
-
- sharpsl_pm.machinfo->discharge(0);
-
- val = get_select_val(buff);
- dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
-
- if (val < sharpsl_pm.machinfo->charge_on_volt)
- return -1;
-
- return 0;
-}
-#endif
-
-static int sharpsl_ac_check(void)
-{
- int temp, i, buff[5];
-
- for (i=0; i<5; i++) {
- buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
- mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
- }
-
- temp = get_select_val(buff);
- dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
-
- if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
- dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
- return -1;
- }
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
-{
- sharpsl_pm.flags |= SHARPSL_SUSPENDED;
- flush_scheduled_work();
-
- if (sharpsl_pm.charge_mode == CHRG_ON)
- sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
- else
- sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
-
- return 0;
-}
-
-static int sharpsl_pm_resume(struct platform_device *pdev)
-{
- /* Clear the reset source indicators as they break the bootloader upon reboot */
- RCSR = 0x0f;
- sharpsl_average_clear();
- sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
- sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
-
- return 0;
-}
-
-static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
-{
- dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
-
- dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
- /* not charging and AC-IN! */
-
- if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
- dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
- sharpsl_pm.charge_mode = CHRG_OFF;
- sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
- sharpsl_off_charge_battery();
- }
-
- sharpsl_pm.machinfo->presuspend();
-
- PEDR = 0xffffffff; /* clear it */
-
- sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
- if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
- RTSR &= RTSR_ALE;
- RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
- dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
- sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
- } else if (alarm_enable) {
- RTSR &= RTSR_ALE;
- RTAR = alarm_time;
- dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
- } else {
- dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
- }
-
- pxa_pm_enter(state);
-
- sharpsl_pm.machinfo->postsuspend();
-
- dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
-}
-
-static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
-{
- if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
- {
- if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
- dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
- corgi_goto_sleep(alarm_time, alarm_enable, state);
- return 1;
- }
- if(sharpsl_off_charge_battery()) {
- dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
- corgi_goto_sleep(alarm_time, alarm_enable, state);
- return 1;
- }
- dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
- }
-
- if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) )
- {
- dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
- corgi_goto_sleep(alarm_time, alarm_enable, state);
- return 1;
- }
-
- return 0;
-}
-
-static int corgi_pxa_pm_enter(suspend_state_t state)
-{
- unsigned long alarm_time = RTAR;
- unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
-
- dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
-
- corgi_goto_sleep(alarm_time, alarm_status, state);
-
- while (corgi_enter_suspend(alarm_time,alarm_status,state))
- {}
-
- if (sharpsl_pm.machinfo->earlyresume)
- sharpsl_pm.machinfo->earlyresume();
-
- dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
-
- return 0;
-}
-
-/*
- * Check for fatal battery errors
- * Fatal returns -1
- */
-static int sharpsl_fatal_check(void)
-{
- int buff[5], temp, i, acin;
-
- dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n");
-
- /* Check AC-Adapter */
- acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
-
- if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
- sharpsl_pm.machinfo->charge(0);
- udelay(100);
- sharpsl_pm.machinfo->discharge(1); /* enable discharge */
- mdelay(SHARPSL_WAIT_DISCHARGE_ON);
- }
-
- if (sharpsl_pm.machinfo->discharge1)
- sharpsl_pm.machinfo->discharge1(1);
-
- /* Check battery : check inserting battery ? */
- for (i=0; i<5; i++) {
- buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
- mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
- }
-
- if (sharpsl_pm.machinfo->discharge1)
- sharpsl_pm.machinfo->discharge1(0);
-
- if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
- udelay(100);
- sharpsl_pm.machinfo->charge(1);
- sharpsl_pm.machinfo->discharge(0);
- }
-
- temp = get_select_val(buff);
- dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %ld\n", acin, temp, sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT));
-
- if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) ||
- (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt)))
- return -1;
- return 0;
-}
-
-static int sharpsl_off_charge_error(void)
-{
- dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
- sharpsl_pm.machinfo->charge(0);
- sharpsl_pm_led(SHARPSL_LED_ERROR);
- sharpsl_pm.charge_mode = CHRG_ERROR;
- return 1;
-}
-
-/*
- * Charging Control while suspended
- * Return 1 - go straight to sleep
- * Return 0 - sleep or wakeup depending on other factors
- */
-static int sharpsl_off_charge_battery(void)
-{
- int time;
-
- dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
-
- if (sharpsl_pm.charge_mode == CHRG_OFF) {
- dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
-
- /* AC Check */
- if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
- return sharpsl_off_charge_error();
-
- /* Start Charging */
- sharpsl_pm_led(SHARPSL_LED_ON);
- sharpsl_pm.machinfo->charge(0);
- mdelay(SHARPSL_CHARGE_WAIT_TIME);
- sharpsl_pm.machinfo->charge(1);
-
- sharpsl_pm.charge_mode = CHRG_ON;
- sharpsl_pm.full_count = 0;
-
- return 1;
- } else if (sharpsl_pm.charge_mode != CHRG_ON) {
- return 1;
- }
-
- if (sharpsl_pm.full_count == 0) {
- int time;
-
- dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
-
- if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
- return sharpsl_off_charge_error();
-
- sharpsl_pm.machinfo->charge(0);
- mdelay(SHARPSL_CHARGE_WAIT_TIME);
- sharpsl_pm.machinfo->charge(1);
- sharpsl_pm.charge_mode = CHRG_ON;
-
- mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
-
- time = RCNR;
- while(1) {
- /* Check if any wakeup event had occurred */
- if (sharpsl_pm.machinfo->charger_wakeup() != 0)
- return 0;
- /* Check for timeout */
- if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
- return 1;
- if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
- dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
- sharpsl_pm.full_count++;
- sharpsl_pm.machinfo->charge(0);
- mdelay(SHARPSL_CHARGE_WAIT_TIME);
- sharpsl_pm.machinfo->charge(1);
- return 1;
- }
- }
- }
-
- dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
-
- mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
-
- time = RCNR;
- while(1) {
- /* Check if any wakeup event had occurred */
- if (sharpsl_pm.machinfo->charger_wakeup() != 0)
- return 0;
- /* Check for timeout */
- if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
- if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
- dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
- sharpsl_pm.full_count = 0;
- }
- sharpsl_pm.full_count++;
- return 1;
- }
- if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
- dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
- sharpsl_pm_led(SHARPSL_LED_OFF);
- sharpsl_pm.machinfo->charge(0);
- sharpsl_pm.charge_mode = CHRG_DONE;
- return 1;
- }
- }
-}
-#else
-#define sharpsl_pm_suspend NULL
-#define sharpsl_pm_resume NULL
-#endif
-
-static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
-}
-
-static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
-}
-
-static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
-static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
-
-extern void (*apm_get_power_status)(struct apm_power_info *);
-
-static void sharpsl_apm_get_power_status(struct apm_power_info *info)
-{
- info->ac_line_status = sharpsl_pm.battstat.ac_status;
-
- if (sharpsl_pm.charge_mode == CHRG_ON)
- info->battery_status = APM_BATTERY_STATUS_CHARGING;
- else
- info->battery_status = sharpsl_pm.battstat.mainbat_status;
-
- info->battery_flag = (1 << info->battery_status);
- info->battery_life = sharpsl_pm.battstat.mainbat_percent;
-}
-
-#ifdef CONFIG_PM
-static struct platform_suspend_ops sharpsl_pm_ops = {
- .enter = corgi_pxa_pm_enter,
- .valid = suspend_valid_only_mem,
-};
-#endif
-
-static int __init sharpsl_pm_probe(struct platform_device *pdev)
-{
- int ret;
-
- if (!pdev->dev.platform_data)
- return -EINVAL;
-
- sharpsl_pm.dev = &pdev->dev;
- sharpsl_pm.machinfo = pdev->dev.platform_data;
- sharpsl_pm.charge_mode = CHRG_OFF;
- sharpsl_pm.flags = 0;
-
- init_timer(&sharpsl_pm.ac_timer);
- sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
-
- init_timer(&sharpsl_pm.chrg_full_timer);
- sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
-
- led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
-
- sharpsl_pm.machinfo->init();
-
- ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
- ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
- if (ret != 0)
- dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
-
- apm_get_power_status = sharpsl_apm_get_power_status;
-
-#ifdef CONFIG_PM
- suspend_set_ops(&sharpsl_pm_ops);
-#endif
-
- mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
-
- return 0;
-}
-
-static int sharpsl_pm_remove(struct platform_device *pdev)
-{
- suspend_set_ops(NULL);
-
- device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
- device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
-
- led_trigger_unregister_simple(sharpsl_charge_led_trigger);
-
- sharpsl_pm.machinfo->exit();
-
- del_timer_sync(&sharpsl_pm.chrg_full_timer);
- del_timer_sync(&sharpsl_pm.ac_timer);
-
- return 0;
-}
-
-static struct platform_driver sharpsl_pm_driver = {
- .probe = sharpsl_pm_probe,
- .remove = sharpsl_pm_remove,
- .suspend = sharpsl_pm_suspend,
- .resume = sharpsl_pm_resume,
- .driver = {
- .name = "sharpsl-pm",
- },
-};
-
-static int __devinit sharpsl_pm_init(void)
-{
- return platform_driver_register(&sharpsl_pm_driver);
-}
-
-static void sharpsl_pm_exit(void)
-{
- platform_driver_unregister(&sharpsl_pm_driver);
-}
-
-late_initcall(sharpsl_pm_init);
-module_exit(sharpsl_pm_exit);