1000 lines
27 KiB
C
1000 lines
27 KiB
C
/*
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* Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00
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* series of PDAs
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*
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* Copyright (c) 2004-2005 Richard Purdie
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*
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* Based on code written by Sharp for 2.4 kernels
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#undef DEBUG
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/apm-emulation.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/leds.h>
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#include <linux/suspend.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <asm/mach-types.h>
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#include <mach/pm.h>
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#include <mach/pxa2xx-regs.h>
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#include <mach/regs-rtc.h>
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#include <mach/sharpsl_pm.h>
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/*
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* Constants
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*/
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#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */
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#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */
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#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */
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#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */
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#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */
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#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */
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#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */
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#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */
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#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */
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#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */
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#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */
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#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */
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/*
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* Prototypes
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*/
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#ifdef CONFIG_PM
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static int sharpsl_off_charge_battery(void);
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static int sharpsl_check_battery_voltage(void);
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static int sharpsl_fatal_check(void);
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#endif
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static int sharpsl_check_battery_temp(void);
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static int sharpsl_ac_check(void);
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static int sharpsl_average_value(int ad);
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static void sharpsl_average_clear(void);
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static void sharpsl_charge_toggle(struct work_struct *private_);
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static void sharpsl_battery_thread(struct work_struct *private_);
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/*
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* Variables
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*/
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struct sharpsl_pm_status sharpsl_pm;
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static DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
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static DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
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DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
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struct battery_thresh sharpsl_battery_levels_acin[] = {
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{ 213, 100},
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{ 212, 98},
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{ 211, 95},
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{ 210, 93},
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{ 209, 90},
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{ 208, 88},
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{ 207, 85},
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{ 206, 83},
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{ 205, 80},
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{ 204, 78},
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{ 203, 75},
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{ 202, 73},
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{ 201, 70},
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{ 200, 68},
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{ 199, 65},
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{ 198, 63},
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{ 197, 60},
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{ 196, 58},
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{ 195, 55},
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{ 194, 53},
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{ 193, 50},
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{ 192, 48},
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{ 192, 45},
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{ 191, 43},
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{ 191, 40},
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{ 190, 38},
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{ 190, 35},
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{ 189, 33},
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{ 188, 30},
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{ 187, 28},
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{ 186, 25},
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{ 185, 23},
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{ 184, 20},
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{ 183, 18},
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{ 182, 15},
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{ 181, 13},
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{ 180, 10},
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{ 179, 8},
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{ 178, 5},
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{ 0, 0},
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};
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struct battery_thresh sharpsl_battery_levels_noac[] = {
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{ 213, 100},
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{ 212, 98},
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{ 211, 95},
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{ 210, 93},
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{ 209, 90},
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{ 208, 88},
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{ 207, 85},
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{ 206, 83},
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{ 205, 80},
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{ 204, 78},
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{ 203, 75},
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{ 202, 73},
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{ 201, 70},
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{ 200, 68},
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{ 199, 65},
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{ 198, 63},
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{ 197, 60},
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{ 196, 58},
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{ 195, 55},
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{ 194, 53},
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{ 193, 50},
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{ 192, 48},
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{ 191, 45},
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{ 190, 43},
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{ 189, 40},
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{ 188, 38},
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{ 187, 35},
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{ 186, 33},
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{ 185, 30},
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{ 184, 28},
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{ 183, 25},
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{ 182, 23},
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{ 181, 20},
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{ 180, 18},
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{ 179, 15},
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{ 178, 13},
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{ 177, 10},
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{ 176, 8},
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{ 175, 5},
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{ 0, 0},
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};
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/* MAX1111 Commands */
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#define MAXCTRL_PD0 (1u << 0)
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#define MAXCTRL_PD1 (1u << 1)
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#define MAXCTRL_SGL (1u << 2)
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#define MAXCTRL_UNI (1u << 3)
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#define MAXCTRL_SEL_SH 4
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#define MAXCTRL_STR (1u << 7)
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extern int max1111_read_channel(int);
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/*
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* Read MAX1111 ADC
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*/
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int sharpsl_pm_pxa_read_max1111(int channel)
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{
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/* Ugly, better move this function into another module */
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if (machine_is_tosa())
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return 0;
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/* max1111 accepts channels from 0-3, however,
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* it is encoded from 0-7 here in the code.
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*/
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return max1111_read_channel(channel >> 1);
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}
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static int get_percentage(int voltage)
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{
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int i = sharpsl_pm.machinfo->bat_levels - 1;
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int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
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struct battery_thresh *thresh;
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if (sharpsl_pm.charge_mode == CHRG_ON)
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thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
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else
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thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
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while (i > 0 && (voltage > thresh[i].voltage))
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i--;
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return thresh[i].percentage;
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}
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static int get_apm_status(int voltage)
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{
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int low_thresh, high_thresh;
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if (sharpsl_pm.charge_mode == CHRG_ON) {
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high_thresh = sharpsl_pm.machinfo->status_high_acin;
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low_thresh = sharpsl_pm.machinfo->status_low_acin;
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} else {
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high_thresh = sharpsl_pm.machinfo->status_high_noac;
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low_thresh = sharpsl_pm.machinfo->status_low_noac;
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}
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if (voltage >= high_thresh)
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return APM_BATTERY_STATUS_HIGH;
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if (voltage >= low_thresh)
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return APM_BATTERY_STATUS_LOW;
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return APM_BATTERY_STATUS_CRITICAL;
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}
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void sharpsl_battery_kick(void)
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{
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schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
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}
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EXPORT_SYMBOL(sharpsl_battery_kick);
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static void sharpsl_battery_thread(struct work_struct *private_)
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{
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int voltage, percent, apm_status, i;
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if (!sharpsl_pm.machinfo)
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return;
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sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
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/* Corgi cannot confirm when battery fully charged so periodically kick! */
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if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
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&& time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
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schedule_delayed_work(&toggle_charger, 0);
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for (i = 0; i < 5; i++) {
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voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
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if (voltage > 0)
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break;
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}
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if (voltage <= 0) {
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voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
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dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
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}
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voltage = sharpsl_average_value(voltage);
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apm_status = get_apm_status(voltage);
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percent = get_percentage(voltage);
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/* At low battery voltages, the voltage has a tendency to start
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creeping back up so we try to avoid this here */
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if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE)
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|| (apm_status == APM_BATTERY_STATUS_HIGH)
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|| percent <= sharpsl_pm.battstat.mainbat_percent) {
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sharpsl_pm.battstat.mainbat_voltage = voltage;
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sharpsl_pm.battstat.mainbat_status = apm_status;
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sharpsl_pm.battstat.mainbat_percent = percent;
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}
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dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
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sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
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/* Suspend if critical battery level */
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if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
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&& (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
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&& !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
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sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
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dev_err(sharpsl_pm.dev, "Fatal Off\n");
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apm_queue_event(APM_CRITICAL_SUSPEND);
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}
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schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
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}
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void sharpsl_pm_led(int val)
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{
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if (val == SHARPSL_LED_ERROR) {
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dev_err(sharpsl_pm.dev, "Charging Error!\n");
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} else if (val == SHARPSL_LED_ON) {
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dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
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led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
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} else {
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dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
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led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
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}
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}
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static void sharpsl_charge_on(void)
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{
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dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
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sharpsl_pm.full_count = 0;
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sharpsl_pm.charge_mode = CHRG_ON;
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schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
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schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
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}
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static void sharpsl_charge_off(void)
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{
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dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
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sharpsl_pm.machinfo->charge(0);
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sharpsl_pm_led(SHARPSL_LED_OFF);
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sharpsl_pm.charge_mode = CHRG_OFF;
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schedule_delayed_work(&sharpsl_bat, 0);
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}
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static void sharpsl_charge_error(void)
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{
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sharpsl_pm_led(SHARPSL_LED_ERROR);
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sharpsl_pm.machinfo->charge(0);
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sharpsl_pm.charge_mode = CHRG_ERROR;
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}
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static void sharpsl_charge_toggle(struct work_struct *private_)
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{
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dev_dbg(sharpsl_pm.dev, "Toggling Charger at time: %lx\n", jiffies);
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if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
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sharpsl_charge_off();
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return;
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} else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
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sharpsl_charge_error();
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return;
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}
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sharpsl_pm_led(SHARPSL_LED_ON);
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sharpsl_pm.machinfo->charge(0);
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mdelay(SHARPSL_CHARGE_WAIT_TIME);
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sharpsl_pm.machinfo->charge(1);
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sharpsl_pm.charge_start_time = jiffies;
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}
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static void sharpsl_ac_timer(unsigned long data)
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{
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int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
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dev_dbg(sharpsl_pm.dev, "AC Status: %d\n", acin);
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sharpsl_average_clear();
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if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
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sharpsl_charge_on();
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else if (sharpsl_pm.charge_mode == CHRG_ON)
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sharpsl_charge_off();
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schedule_delayed_work(&sharpsl_bat, 0);
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}
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static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
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{
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/* Delay the event slightly to debounce */
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/* Must be a smaller delay than the chrg_full_isr below */
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mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
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return IRQ_HANDLED;
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}
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static void sharpsl_chrg_full_timer(unsigned long data)
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{
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dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
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sharpsl_pm.full_count++;
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if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
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dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
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if (sharpsl_pm.charge_mode == CHRG_ON)
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sharpsl_charge_off();
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} else if (sharpsl_pm.full_count < 2) {
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dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
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schedule_delayed_work(&toggle_charger, 0);
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} else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
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dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
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schedule_delayed_work(&toggle_charger, 0);
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} else {
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sharpsl_charge_off();
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sharpsl_pm.charge_mode = CHRG_DONE;
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dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
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}
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}
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/* Charging Finished Interrupt (Not present on Corgi) */
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/* Can trigger at the same time as an AC status change so
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delay until after that has been processed */
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static irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
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{
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if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
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return IRQ_HANDLED;
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/* delay until after any ac interrupt */
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mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
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return IRQ_HANDLED;
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}
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static irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
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{
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int is_fatal = 0;
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if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
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dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
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is_fatal = 1;
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}
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if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
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dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
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is_fatal = 1;
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}
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if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
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sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
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apm_queue_event(APM_CRITICAL_SUSPEND);
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}
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return IRQ_HANDLED;
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}
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/*
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* Maintain an average of the last 10 readings
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*/
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#define SHARPSL_CNV_VALUE_NUM 10
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static int sharpsl_ad_index;
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static void sharpsl_average_clear(void)
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{
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sharpsl_ad_index = 0;
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}
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static int sharpsl_average_value(int ad)
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{
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int i, ad_val = 0;
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static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
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if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
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sharpsl_ad_index = 0;
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return ad;
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}
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sharpsl_ad[sharpsl_ad_index] = ad;
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sharpsl_ad_index++;
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if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
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for (i = 0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
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sharpsl_ad[i] = sharpsl_ad[i+1];
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sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
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}
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for (i = 0; i < sharpsl_ad_index; i++)
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ad_val += sharpsl_ad[i];
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return ad_val / sharpsl_ad_index;
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}
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/*
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* Take an array of 5 integers, remove the maximum and minimum values
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* and return the average.
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*/
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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)) {
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dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock));
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}
|
|
|
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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)) {
|
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dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal));
|
|
}
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}
|
|
|
|
if (sharpsl_pm.machinfo->batfull_irq) {
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/* Register interrupt handler. */
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|
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);
|
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ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
|
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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);
|