diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/apm_power.c | 91 |
1 files changed, 70 insertions, 21 deletions
diff --git a/drivers/power/apm_power.c b/drivers/power/apm_power.c index 7e29b90a4f6..a832a9a05c6 100644 --- a/drivers/power/apm_power.c +++ b/drivers/power/apm_power.c @@ -13,7 +13,7 @@ #include <linux/power_supply.h> #include <linux/apm-emulation.h> -static DEFINE_MUTEX(apm_mutex); + #define PSY_PROP(psy, prop, val) psy->get_property(psy, \ POWER_SUPPLY_PROP_##prop, val) @@ -22,8 +22,15 @@ static DEFINE_MUTEX(apm_mutex); #define MPSY_PROP(prop, val) _MPSY_PROP(POWER_SUPPLY_PROP_##prop, val) +static DEFINE_MUTEX(apm_mutex); static struct power_supply *main_battery; +enum apm_source { + SOURCE_ENERGY, + SOURCE_CHARGE, + SOURCE_VOLTAGE, +}; + struct find_bat_param { struct power_supply *main; struct power_supply *bat; @@ -107,7 +114,7 @@ static void find_main_battery(void) } } -static int calculate_time(int status, int using_charge) +static int do_calculate_time(int status, enum apm_source source) { union power_supply_propval full; union power_supply_propval empty; @@ -126,20 +133,34 @@ static int calculate_time(int status, int using_charge) return -1; } - if (using_charge) { + switch (source) { + case SOURCE_CHARGE: full_prop = POWER_SUPPLY_PROP_CHARGE_FULL; full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN; empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY; empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY; cur_avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG; cur_now_prop = POWER_SUPPLY_PROP_CHARGE_NOW; - } else { + break; + case SOURCE_ENERGY: full_prop = POWER_SUPPLY_PROP_ENERGY_FULL; full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN; empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY; empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY; cur_avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG; cur_now_prop = POWER_SUPPLY_PROP_ENERGY_NOW; + break; + case SOURCE_VOLTAGE: + full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX; + full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN; + empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN; + empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN; + cur_avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG; + cur_now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW; + break; + default: + printk(KERN_ERR "Unsupported source: %d\n", source); + return -1; } if (_MPSY_PROP(full_prop, &full)) { @@ -166,7 +187,26 @@ static int calculate_time(int status, int using_charge) return -((cur.intval - empty.intval) * 60L) / I.intval; } -static int calculate_capacity(int using_charge) +static int calculate_time(int status) +{ + int time; + + time = do_calculate_time(status, SOURCE_ENERGY); + if (time != -1) + return time; + + time = do_calculate_time(status, SOURCE_CHARGE); + if (time != -1) + return time; + + time = do_calculate_time(status, SOURCE_VOLTAGE); + if (time != -1) + return time; + + return -1; +} + +static int calculate_capacity(enum apm_source source) { enum power_supply_property full_prop, empty_prop; enum power_supply_property full_design_prop, empty_design_prop; @@ -174,20 +214,33 @@ static int calculate_capacity(int using_charge) union power_supply_propval empty, full, cur; int ret; - if (using_charge) { + switch (source) { + case SOURCE_CHARGE: full_prop = POWER_SUPPLY_PROP_CHARGE_FULL; empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY; full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN; empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN; now_prop = POWER_SUPPLY_PROP_CHARGE_NOW; avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG; - } else { + break; + case SOURCE_ENERGY: full_prop = POWER_SUPPLY_PROP_ENERGY_FULL; empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY; full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN; empty_design_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN; now_prop = POWER_SUPPLY_PROP_ENERGY_NOW; avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG; + case SOURCE_VOLTAGE: + full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX; + empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN; + full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN; + empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN; + now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW; + avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG; + break; + default: + printk(KERN_ERR "Unsupported source: %d\n", source); + return -1; } if (_MPSY_PROP(full_prop, &full)) { @@ -254,10 +307,12 @@ static void apm_battery_apm_get_power_status(struct apm_power_info *info) info->battery_life = capacity.intval; } else { /* try calculate using energy */ - info->battery_life = calculate_capacity(0); + info->battery_life = calculate_capacity(SOURCE_ENERGY); /* if failed try calculate using charge instead */ if (info->battery_life == -1) - info->battery_life = calculate_capacity(1); + info->battery_life = calculate_capacity(SOURCE_CHARGE); + if (info->battery_life == -1) + info->battery_life = calculate_capacity(SOURCE_VOLTAGE); } /* charging status */ @@ -280,22 +335,16 @@ static void apm_battery_apm_get_power_status(struct apm_power_info *info) if (status.intval == POWER_SUPPLY_STATUS_CHARGING) { if (!MPSY_PROP(TIME_TO_FULL_AVG, &time_to_full) || - !MPSY_PROP(TIME_TO_FULL_NOW, &time_to_full)) { + !MPSY_PROP(TIME_TO_FULL_NOW, &time_to_full)) info->time = time_to_full.intval / 60; - } else { - info->time = calculate_time(status.intval, 0); - if (info->time == -1) - info->time = calculate_time(status.intval, 1); - } + else + info->time = calculate_time(status.intval); } else { if (!MPSY_PROP(TIME_TO_EMPTY_AVG, &time_to_empty) || - !MPSY_PROP(TIME_TO_EMPTY_NOW, &time_to_empty)) { + !MPSY_PROP(TIME_TO_EMPTY_NOW, &time_to_empty)) info->time = time_to_empty.intval / 60; - } else { - info->time = calculate_time(status.intval, 0); - if (info->time == -1) - info->time = calculate_time(status.intval, 1); - } + else + info->time = calculate_time(status.intval); } mutex_unlock(&apm_mutex); |