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/*
* Copyright (C) 2010 Michael Buesch <m@bues.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "battery_powerbook.h"
#include "fileaccess.h"
#include "log.h"
#include "util.h"
#include <stdio.h>
#include <errno.h>
#include <string.h>
static int battery_powerbook_update(struct battery *b)
{
struct battery_powerbook *bp = container_of(b, struct battery_powerbook, battery);
LIST_HEAD(lines);
struct text_line *tl;
int err;
unsigned int value;
int got_ac = 0, got_max_chg = 0, got_cur_chg = 0;
int value_changed = 0;
err = file_read_text_lines(bp->info_file, &lines, 0);
if (err || list_empty(&lines)) {
logerr("WARNING: Failed to read battery info file\n");
return -ETXTBSY;
}
list_for_each_entry(tl, &lines, list) {
char *id, *elem;
elem = strchr(tl->text, ':');
if (!elem)
continue;
elem[0] = '\0';
elem++;
elem = string_strip(elem);
id = string_strip(tl->text);
if (strcmp(id, "AC Power") == 0) {
if (sscanf(elem, "%u", &value) == 1) {
if ((int)value != bp->on_ac)
value_changed = 1;
bp->on_ac = (int)value;
got_ac = 1;
}
}
if (got_ac)
break;
}
text_lines_free(&lines);
err = file_read_text_lines(bp->stat_file, &lines, 0);
if (err || list_empty(&lines)) {
logerr("WARNING: Failed to read battery stat file\n");
return -ETXTBSY;
}
list_for_each_entry(tl, &lines, list) {
char *id, *elem;
elem = strchr(tl->text, ':');
if (!elem)
continue;
elem[0] = '\0';
elem++;
elem = string_strip(elem);
id = string_strip(tl->text);
if (strcmp(id, "max_charge") == 0) {
if (sscanf(elem, "%u", &value) == 1) {
if ((int)value != bp->max_charge)
value_changed = 1;
bp->max_charge = (int)value;
got_max_chg = 1;
}
}
if (strcmp(id, "charge") == 0) {
if (sscanf(elem, "%u", &value) == 1) {
if ((int)value != bp->charge)
value_changed = 1;
bp->charge = (int)value;
got_cur_chg = 1;
}
}
if (got_max_chg && got_cur_chg)
break;
}
text_lines_free(&lines);
if (!got_ac)
logerr("WARNING: Failed to get AC status\n");
if (!got_max_chg)
logerr("WARNING: Failed to get max battery charge value\n");
if (!got_cur_chg)
logerr("WARNING: Failed to get current battery charge value\n");
if (value_changed)
battery_notify_state_change(b);
return 0;
}
static int battery_powerbook_on_ac(struct battery *b)
{
struct battery_powerbook *bp = container_of(b, struct battery_powerbook, battery);
return bp->on_ac;
}
static int battery_powerbook_max_level(struct battery *b)
{
struct battery_powerbook *bp = container_of(b, struct battery_powerbook, battery);
return bp->max_charge;
}
static int battery_powerbook_charge_level(struct battery *b)
{
struct battery_powerbook *bp = container_of(b, struct battery_powerbook, battery);
return bp->charge;
}
static void battery_powerbook_destroy(struct battery *b)
{
struct battery_powerbook *bp = container_of(b, struct battery_powerbook, battery);
file_close(bp->info_file);
file_close(bp->stat_file);
free(bp);
}
static struct battery * battery_powerbook_probe(void)
{
struct fileaccess *info, *stat;
struct battery_powerbook *bp;
info = procfs_file_open(O_RDONLY, "/pmu/info");
stat = procfs_file_open(O_RDONLY, "/pmu/battery_0");
if (!info || !stat)
goto err_close;
bp = zalloc(sizeof(*bp));
if (!bp)
goto err_close;
bp->info_file = info;
bp->stat_file = stat;
battery_init(&bp->battery, "powerbook");
bp->battery.destroy = battery_powerbook_destroy;
bp->battery.update = battery_powerbook_update;
bp->battery.on_ac = battery_powerbook_on_ac;
bp->battery.max_level = battery_powerbook_max_level;
bp->battery.charge_level = battery_powerbook_charge_level;
bp->battery.poll_interval = 1000;
return &bp->battery;
err_close:
file_close(info);
file_close(stat);
return NULL;
}
BATTERY_PROBE(powerbook, battery_powerbook_probe);
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