diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-pxa/sharpsl_pm.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-pxa/sharpsl_pm.c | 999 |
1 files changed, 0 insertions, 999 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-pxa/sharpsl_pm.c b/ANDROID_3.4.5/arch/arm/mach-pxa/sharpsl_pm.c deleted file mode 100644 index bdf4cb88..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-pxa/sharpsl_pm.c +++ /dev/null @@ -1,999 +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/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 <linux/io.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, 13}, - { 177, 10}, - { 176, 8}, - { 175, 5}, - { 0, 0}, -}; - -/* MAX1111 Commands */ -#define MAXCTRL_PD0 (1u << 0) -#define MAXCTRL_PD1 (1u << 1) -#define MAXCTRL_SGL (1u << 2) -#define MAXCTRL_UNI (1u << 3) -#define MAXCTRL_SEL_SH 4 -#define MAXCTRL_STR (1u << 7) - -extern int max1111_read_channel(int); -/* - * Read MAX1111 ADC - */ -int sharpsl_pm_pxa_read_max1111(int channel) -{ - /* Ugly, better move this function into another module */ - if (machine_is_tosa()) - return 0; - - /* max1111 accepts channels from 0-3, however, - * it is encoded from 0-7 here in the code. - */ - return max1111_read_channel(channel >> 1); -} - -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; - - 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); - - for (i = 0; i < 5; i++) { - voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); - if (voltage > 0) - break; - } - if (voltage <= 0) { - voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; - dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); - } - - 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); - - /* 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, "Toggling 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); -} - - -static 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 */ -static 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; -} - -static 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: voltage %d.\n", temp); - 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_delayed_work_sync(&toggle_charger); - flush_delayed_work_sync(&sharpsl_bat); - - 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_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL))) { - 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()) - 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 const struct platform_suspend_ops sharpsl_pm_ops = { - .prepare = pxa_pm_prepare, - .finish = pxa_pm_finish, - .enter = corgi_pxa_pm_enter, - .valid = suspend_valid_only_mem, -}; -#endif - -static int __devinit 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(); - - gpio_request(sharpsl_pm.machinfo->gpio_acin, "AC IN"); - gpio_direction_input(sharpsl_pm.machinfo->gpio_acin); - gpio_request(sharpsl_pm.machinfo->gpio_batfull, "Battery Full"); - gpio_direction_input(sharpsl_pm.machinfo->gpio_batfull); - gpio_request(sharpsl_pm.machinfo->gpio_batlock, "Battery Lock"); - gpio_direction_input(sharpsl_pm.machinfo->gpio_batlock); - - /* Register interrupt handlers */ - if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "AC Input Detect", sharpsl_ac_isr)) { - dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_acin)); - } - - if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Battery Cover", sharpsl_fatal_isr)) { - dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock)); - } - - if (sharpsl_pm.machinfo->gpio_fatal) { - if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Fatal Battery", sharpsl_fatal_isr)) { - dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal)); - } - } - - if (sharpsl_pm.machinfo->batfull_irq) { - /* Register interrupt handler. */ - if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) { - dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batfull)); - } - } - - 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); - - free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr); - free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr); - - if (sharpsl_pm.machinfo->gpio_fatal) - free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr); - - if (sharpsl_pm.machinfo->batfull_irq) - free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); - - gpio_free(sharpsl_pm.machinfo->gpio_batlock); - gpio_free(sharpsl_pm.machinfo->gpio_batfull); - gpio_free(sharpsl_pm.machinfo->gpio_acin); - - if (sharpsl_pm.machinfo->exit) - 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); |