config SHARP_PARAM
bool
-config SHARPSL_PM
- bool
- select APM_EMULATION
-
config SHARP_SCOOP
bool
obj-$(CONFIG_TIMER_ACORN) += time-acorn.o
obj-$(CONFIG_SHARP_LOCOMO) += locomo.o
obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o
-obj-$(CONFIG_SHARPSL_PM) += sharpsl_pm.o
obj-$(CONFIG_SHARP_SCOOP) += scoop.o
obj-$(CONFIG_ARCH_IXP2000) += uengine.o
obj-$(CONFIG_ARCH_IXP23XX) += uengine.o
+++ /dev/null
-/*
- * 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);
SL-C3000 (Spitz), SL-C3100 (Borzoi) or SL-C6000x (Tosa)
handheld computer.
+config SHARPSL_PM
+ bool
+ select APM_EMULATION
+
config CORGI_SSP_DEPRECATED
bool
select PXA_SSP
*
*/
-#include <asm/hardware/sharpsl_pm.h>
+#include <mach/sharpsl_pm.h>
/*
* SharpSL SSP Driver
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/apm-emulation.h>
+#include <linux/timer.h>
+#include <linux/apm_bios.h>
+#include <linux/delay.h>
+#include <linux/leds.h>
+#include <linux/suspend.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <mach/pm.h>
+#include <mach/pxa2xx-regs.h>
#include <mach/pxa2xx-gpio.h>
+#include <mach/regs-rtc.h>
#include <mach/sharpsl.h>
-#include "sharpsl.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;
+DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
+DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
+DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
+
+
struct battery_thresh spitz_battery_levels_acin[] = {
{ 213, 100},
if (sharpsl_pm.machinfo->batfull_irq)
free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
}
+
+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);
projects / platform / kernel / linux-rpi.git / commitdiff