#undef DEBUG
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
-#include <linux/irq.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 <mach/hardware.h>
#include <asm/mach-types.h>
#include <mach/pm.h>
-#include <mach/pxa-regs.h>
+#include <mach/pxa2xx-regs.h>
#include <mach/pxa2xx-gpio.h>
+#include <mach/regs-rtc.h>
#include <mach/sharpsl.h>
+#include <mach/sharpsl_pm.h>
+
#include "sharpsl.h"
-struct battery_thresh spitz_battery_levels_acin[] = {
+/*
+ * 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},
{ 0, 0},
};
-struct battery_thresh spitz_battery_levels_noac[] = {
+struct battery_thresh sharpsl_battery_levels_noac[] = {
{ 213, 100},
{ 212, 98},
{ 211, 95},
};
/* MAX1111 Commands */
-#define MAXCTRL_PD0 1u << 0
-#define MAXCTRL_PD1 1u << 1
-#define MAXCTRL_SGL 1u << 2
-#define MAXCTRL_UNI 1u << 3
+#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
+#define MAXCTRL_STR (1u << 7)
/*
* Read MAX1111 ADC
*/
int sharpsl_pm_pxa_read_max1111(int channel)
{
- if (machine_is_tosa()) // Ugly, better move this function into another module
+ /* Ugly, better move this function into another module */
+ if (machine_is_tosa())
return 0;
-#ifdef CONFIG_SENSORS_MAX1111
+#ifdef CONFIG_CORGI_SSP_DEPRECATED
+ return corgi_ssp_max1111_get((channel << MAXCTRL_SEL_SH) | MAXCTRL_PD0 | MAXCTRL_PD1
+ | MAXCTRL_SGL | MAXCTRL_UNI | MAXCTRL_STR);
+#else
extern int max1111_read_channel(int);
/* max1111 accepts channels from 0-3, however,
* it is encoded from 0-7 here in the code.
*/
return max1111_read_channel(channel >> 1);
+#endif
+}
+
+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);
+
+#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, "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_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_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
- return corgi_ssp_max1111_get((channel << MAXCTRL_SEL_SH) | MAXCTRL_PD0 | MAXCTRL_PD1
- | MAXCTRL_SGL | MAXCTRL_UNI | MAXCTRL_STR);
+#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);
}
-void sharpsl_pm_pxa_init(void)
+static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
{
- pxa_gpio_mode(sharpsl_pm.machinfo->gpio_acin | GPIO_IN);
- pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batfull | GPIO_IN);
- pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batlock | GPIO_IN);
+ 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 = {
+ .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(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, IRQF_DISABLED, "AC Input Detect", sharpsl_ac_isr)) {
+ if (request_irq(IRQ_GPIO(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", IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin));
}
- else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin),IRQ_TYPE_EDGE_BOTH);
- if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, IRQF_DISABLED, "Battery Cover", sharpsl_fatal_isr)) {
+ if (request_irq(IRQ_GPIO(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", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock));
}
- else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock),IRQ_TYPE_EDGE_FALLING);
if (sharpsl_pm.machinfo->gpio_fatal) {
- if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, IRQF_DISABLED, "Fatal Battery", sharpsl_fatal_isr)) {
+ if (request_irq(IRQ_GPIO(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", IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal));
}
- else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal),IRQ_TYPE_EDGE_FALLING);
}
- if (sharpsl_pm.machinfo->batfull_irq)
- {
+ if (sharpsl_pm.machinfo->batfull_irq) {
/* Register interrupt handler. */
- if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED, "CO", sharpsl_chrg_full_isr)) {
+ if (request_irq(IRQ_GPIO(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", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull));
}
- else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull),IRQ_TYPE_EDGE_RISING);
}
+
+ 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;
}
-void sharpsl_pm_pxa_remove(void)
+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(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr);
free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr);
if (sharpsl_pm.machinfo->batfull_irq)
free_irq(IRQ_GPIO(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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff