| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dmitry Eremin-Solenikov | 3847 | 83.47% | 4 | 15.38% |
| Richard Purdie | 588 | 12.76% | 3 | 11.54% |
| Pavel Machek | 49 | 1.06% | 4 | 15.38% |
| Rob Herring | 48 | 1.04% | 2 | 7.69% |
| Eric Miao | 30 | 0.65% | 2 | 7.69% |
| Kees Cook | 12 | 0.26% | 1 | 3.85% |
| Tejun Heo | 11 | 0.24% | 2 | 7.69% |
| Haojian Zhuang | 7 | 0.15% | 1 | 3.85% |
| Vaishali Thakkar | 6 | 0.13% | 1 | 3.85% |
| Thomas Gleixner | 3 | 0.07% | 2 | 7.69% |
| Arnd Bergmann | 3 | 0.07% | 1 | 3.85% |
| Russell King | 2 | 0.04% | 1 | 3.85% |
| Joe Perches | 2 | 0.04% | 1 | 3.85% |
| Lionel Debroux | 1 | 0.02% | 1 | 3.85% |
| Total | 4609 | 26 |
// SPDX-License-Identifier: GPL-2.0-only /* * 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 */ #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 "pm.h" #include <mach/pxa2xx-regs.h> #include "regs-rtc.h" #include "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); #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(struct timer_list *unused) { 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(struct timer_list *unused) { 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(&toggle_charger); flush_delayed_work(&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; } 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()) 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_RO(battery_percentage); static DEVICE_ATTR_RO(battery_voltage); 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 sharpsl_pm_probe(struct platform_device *pdev) { int ret, irq; 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; timer_setup(&sharpsl_pm.ac_timer, sharpsl_ac_timer, 0); timer_setup(&sharpsl_pm.chrg_full_timer, sharpsl_chrg_full_timer, 0); 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 */ irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_acin); if (request_irq(irq, sharpsl_ac_isr, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "AC Input Detect", sharpsl_ac_isr)) { dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); } irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_batlock); if (request_irq(irq, sharpsl_fatal_isr, IRQF_TRIGGER_FALLING, "Battery Cover", sharpsl_fatal_isr)) { dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); } if (sharpsl_pm.machinfo->gpio_fatal) { irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_fatal); if (request_irq(irq, sharpsl_fatal_isr, IRQF_TRIGGER_FALLING, "Fatal Battery", sharpsl_fatal_isr)) { dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); } } if (sharpsl_pm.machinfo->batfull_irq) { /* Register interrupt handler. */ irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_batfull); if (request_irq(irq, sharpsl_chrg_full_isr, IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) { dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); } } 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(gpio_to_irq(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr); free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr); if (sharpsl_pm.machinfo->gpio_fatal) free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr); if (sharpsl_pm.machinfo->batfull_irq) free_irq(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 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);
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