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99f329a2ba
sharpsl_pm.c code tries to read battery state very early during resume, but those battery meters are connected on SPI and that's only resumed way later. Replace the check with simple checking of battery fatal signal, that actually works at this stage. Signed-off-by: Pavel Machek <pavel@ucw.cz> Tested-by: Stanislav Brabec <utx@penguin.cz> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
1023 lines
28 KiB
C
1023 lines
28 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 <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/pxa2xx-gpio.h>
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#include <mach/regs-rtc.h>
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#include <mach/sharpsl.h>
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#include <mach/sharpsl_pm.h>
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#include "sharpsl.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 spitz_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 spitz_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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/*
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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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if (machine_is_tosa()) // Ugly, better move this function into another module
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return 0;
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#ifdef CONFIG_CORGI_SSP_DEPRECATED
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return corgi_ssp_max1111_get((channel << MAXCTRL_SEL_SH) | MAXCTRL_PD0 | MAXCTRL_PD1
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| MAXCTRL_SGL | MAXCTRL_UNI | MAXCTRL_STR);
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#else
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extern int max1111_read_channel(int);
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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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#endif
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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 = 0;
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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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while(1) {
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voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
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if (voltage > 0) break;
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if (i++ > 5) {
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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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break;
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}
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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) || (apm_status == APM_BATTERY_STATUS_HIGH) || 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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#ifdef CONFIG_BACKLIGHT_CORGI
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/* If battery is low. limit backlight intensity to save power. */
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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_LOW) ||
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(sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
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if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
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sharpsl_pm.machinfo->backlight_limit(1);
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sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
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}
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} else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) {
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sharpsl_pm.machinfo->backlight_limit(0);
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sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
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}
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#endif
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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, "Toogling 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;
|
|
}
|
|
|
|
/*
|
|
* Maintain an average of the last 10 readings
|
|
*/
|
|
#define SHARPSL_CNV_VALUE_NUM 10
|
|
static int sharpsl_ad_index;
|
|
|
|
static void sharpsl_average_clear(void)
|
|
{
|
|
sharpsl_ad_index = 0;
|
|
}
|
|
|
|
static int sharpsl_average_value(int ad)
|
|
{
|
|
int i, ad_val = 0;
|
|
static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
|
|
|
|
if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
|
|
sharpsl_ad_index = 0;
|
|
return ad;
|
|
}
|
|
|
|
sharpsl_ad[sharpsl_ad_index] = ad;
|
|
sharpsl_ad_index++;
|
|
if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
|
|
for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
|
|
sharpsl_ad[i] = sharpsl_ad[i+1];
|
|
sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
|
|
}
|
|
for (i=0; i < sharpsl_ad_index; i++)
|
|
ad_val += sharpsl_ad[i];
|
|
|
|
return (ad_val / sharpsl_ad_index);
|
|
}
|
|
|
|
/*
|
|
* Take an array of 5 integers, remove the maximum and minimum values
|
|
* and return the average.
|
|
*/
|
|
static int get_select_val(int *val)
|
|
{
|
|
int i, j, k, temp, sum = 0;
|
|
|
|
/* Find MAX val */
|
|
temp = val[0];
|
|
j=0;
|
|
for (i=1; i<5; i++) {
|
|
if (temp < val[i]) {
|
|
temp = val[i];
|
|
j = i;
|
|
}
|
|
}
|
|
|
|
/* Find MIN val */
|
|
temp = val[4];
|
|
k=4;
|
|
for (i=3; i>=0; i--) {
|
|
if (temp > val[i]) {
|
|
temp = val[i];
|
|
k = i;
|
|
}
|
|
}
|
|
|
|
for (i=0; i<5; i++)
|
|
if (i != j && i != k )
|
|
sum += val[i];
|
|
|
|
dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]);
|
|
|
|
return (sum/3);
|
|
}
|
|
|
|
static int sharpsl_check_battery_temp(void)
|
|
{
|
|
int val, i, buff[5];
|
|
|
|
/* Check battery temperature */
|
|
for (i=0; i<5; i++) {
|
|
mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
|
|
sharpsl_pm.machinfo->measure_temp(1);
|
|
mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
|
|
buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
|
|
sharpsl_pm.machinfo->measure_temp(0);
|
|
}
|
|
|
|
val = get_select_val(buff);
|
|
|
|
dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
|
|
if (val > sharpsl_pm.machinfo->charge_on_temp) {
|
|
printk(KERN_WARNING "Not charging: temperature out of limits.\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int sharpsl_check_battery_voltage(void)
|
|
{
|
|
int val, i, buff[5];
|
|
|
|
/* disable charge, enable discharge */
|
|
sharpsl_pm.machinfo->charge(0);
|
|
sharpsl_pm.machinfo->discharge(1);
|
|
mdelay(SHARPSL_WAIT_DISCHARGE_ON);
|
|
|
|
if (sharpsl_pm.machinfo->discharge1)
|
|
sharpsl_pm.machinfo->discharge1(1);
|
|
|
|
/* Check battery voltage */
|
|
for (i=0; i<5; i++) {
|
|
buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
|
|
mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
|
|
}
|
|
|
|
if (sharpsl_pm.machinfo->discharge1)
|
|
sharpsl_pm.machinfo->discharge1(0);
|
|
|
|
sharpsl_pm.machinfo->discharge(0);
|
|
|
|
val = get_select_val(buff);
|
|
dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
|
|
|
|
if (val < sharpsl_pm.machinfo->charge_on_volt)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int sharpsl_ac_check(void)
|
|
{
|
|
int temp, i, buff[5];
|
|
|
|
for (i=0; i<5; i++) {
|
|
buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
|
|
mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
|
|
}
|
|
|
|
temp = get_select_val(buff);
|
|
dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
|
|
|
|
if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
|
|
dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
sharpsl_pm.flags |= SHARPSL_SUSPENDED;
|
|
flush_scheduled_work();
|
|
|
|
if (sharpsl_pm.charge_mode == CHRG_ON)
|
|
sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
|
|
else
|
|
sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sharpsl_pm_resume(struct platform_device *pdev)
|
|
{
|
|
/* Clear the reset source indicators as they break the bootloader upon reboot */
|
|
RCSR = 0x0f;
|
|
sharpsl_average_clear();
|
|
sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
|
|
sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
|
|
{
|
|
dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
|
|
|
|
dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
|
|
/* not charging and AC-IN! */
|
|
|
|
if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
|
|
dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
|
|
sharpsl_pm.charge_mode = CHRG_OFF;
|
|
sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
|
|
sharpsl_off_charge_battery();
|
|
}
|
|
|
|
sharpsl_pm.machinfo->presuspend();
|
|
|
|
PEDR = 0xffffffff; /* clear it */
|
|
|
|
sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
|
|
if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
|
|
RTSR &= RTSR_ALE;
|
|
RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
|
|
dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
|
|
sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
|
|
} else if (alarm_enable) {
|
|
RTSR &= RTSR_ALE;
|
|
RTAR = alarm_time;
|
|
dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
|
|
} else {
|
|
dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
|
|
}
|
|
|
|
pxa_pm_enter(state);
|
|
|
|
sharpsl_pm.machinfo->postsuspend();
|
|
|
|
dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
|
|
}
|
|
|
|
static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
|
|
{
|
|
if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
|
|
{
|
|
if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
|
|
dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
|
|
corgi_goto_sleep(alarm_time, alarm_enable, state);
|
|
return 1;
|
|
}
|
|
if(sharpsl_off_charge_battery()) {
|
|
dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
|
|
corgi_goto_sleep(alarm_time, alarm_enable, state);
|
|
return 1;
|
|
}
|
|
dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
|
|
}
|
|
|
|
if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) ||
|
|
(!sharpsl_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() != 0)
|
|
return 0;
|
|
/* Check for timeout */
|
|
if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
|
|
if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
|
|
dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
|
|
sharpsl_pm.full_count = 0;
|
|
}
|
|
sharpsl_pm.full_count++;
|
|
return 1;
|
|
}
|
|
if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
|
|
dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
|
|
sharpsl_pm_led(SHARPSL_LED_OFF);
|
|
sharpsl_pm.machinfo->charge(0);
|
|
sharpsl_pm.charge_mode = CHRG_DONE;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
#define sharpsl_pm_suspend NULL
|
|
#define sharpsl_pm_resume NULL
|
|
#endif
|
|
|
|
static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
|
|
}
|
|
|
|
static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
|
|
}
|
|
|
|
static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
|
|
static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
|
|
|
|
extern void (*apm_get_power_status)(struct apm_power_info *);
|
|
|
|
static void sharpsl_apm_get_power_status(struct apm_power_info *info)
|
|
{
|
|
info->ac_line_status = sharpsl_pm.battstat.ac_status;
|
|
|
|
if (sharpsl_pm.charge_mode == CHRG_ON)
|
|
info->battery_status = APM_BATTERY_STATUS_CHARGING;
|
|
else
|
|
info->battery_status = sharpsl_pm.battstat.mainbat_status;
|
|
|
|
info->battery_flag = (1 << info->battery_status);
|
|
info->battery_life = sharpsl_pm.battstat.mainbat_percent;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static struct platform_suspend_ops sharpsl_pm_ops = {
|
|
.prepare = pxa_pm_prepare,
|
|
.finish = pxa_pm_finish,
|
|
.enter = corgi_pxa_pm_enter,
|
|
.valid = suspend_valid_only_mem,
|
|
};
|
|
#endif
|
|
|
|
static int __init sharpsl_pm_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
if (!pdev->dev.platform_data)
|
|
return -EINVAL;
|
|
|
|
sharpsl_pm.dev = &pdev->dev;
|
|
sharpsl_pm.machinfo = pdev->dev.platform_data;
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sharpsl_pm.charge_mode = CHRG_OFF;
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sharpsl_pm.flags = 0;
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init_timer(&sharpsl_pm.ac_timer);
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sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
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init_timer(&sharpsl_pm.chrg_full_timer);
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sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
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led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
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|
|
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sharpsl_pm.machinfo->init();
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|
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gpio_request(sharpsl_pm.machinfo->gpio_acin, "AC IN");
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gpio_direction_input(sharpsl_pm.machinfo->gpio_acin);
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gpio_request(sharpsl_pm.machinfo->gpio_batfull, "Battery Full");
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gpio_direction_input(sharpsl_pm.machinfo->gpio_batfull);
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gpio_request(sharpsl_pm.machinfo->gpio_batlock, "Battery Lock");
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gpio_direction_input(sharpsl_pm.machinfo->gpio_batlock);
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|
|
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/* Register interrupt handlers */
|
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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)) {
|
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dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin));
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
if (sharpsl_pm.machinfo->gpio_fatal) {
|
|
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));
|
|
}
|
|
}
|
|
|
|
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 | 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));
|
|
}
|
|
}
|
|
|
|
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(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->gpio_fatal)
|
|
free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), 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);
|