[PATCH 96/98] ACPI: battery: add power_{now,avg} properties to power_class

Len Brown
2009-03-28T04:33:59Z

From: Alexey Starikovskiy <astarikovskiy@suse.de>

ACPI has smart batteries, which work in units of energy and measure
rate of (dis)charge as power, thus it is not appropriate to export it
as a current_now. Current_now will still be exported to allow
for userland applications to match.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
---
drivers/acpi/battery.c | 12 +++++++-----
drivers/acpi/sbs.c | 27 ++++++++++++++++-----------
drivers/power/power_supply_sysfs.c | 2 ++
include/linux/power_supply.h | 2 ++
4 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 69cbc57..09a2240 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -92,7 +92,7 @@ struct acpi_battery {
#endif
struct acpi_device *device;
unsigned long update_time;
- int current_now;
+ int rate_now;
int capacity_now;
int voltage_now;
int design_capacity;
@@ -196,7 +196,8 @@ static int acpi_battery_get_property(struct power_supply *psy,
val->intval = battery->voltage_now * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = battery->current_now * 1000;
+ case POWER_SUPPLY_PROP_POWER_NOW:
+ val->intval = battery->rate_now * 1000;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
@@ -247,6 +248,7 @@ static enum power_supply_property energy_battery_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_POWER_NOW,
POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
POWER_SUPPLY_PROP_ENERGY_FULL,
POWER_SUPPLY_PROP_ENERGY_NOW,
@@ -273,7 +275,7 @@ struct acpi_offsets {

static struct acpi_offsets state_offsets[] = {
{offsetof(struct acpi_battery, state), 0},
- {offsetof(struct acpi_battery, current_now), 0},
+ {offsetof(struct acpi_battery, rate_now), 0},
{offsetof(struct acpi_battery, capacity_now), 0},
{offsetof(struct acpi_battery, voltage_now), 0},
};
@@ -605,11 +607,11 @@ static int acpi_battery_print_state(struct seq_file *seq, int result)
else
seq_printf(seq, "charging state: charged\n");

- if (battery->current_now == ACPI_BATTERY_VALUE_UNKNOWN)
+ if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "present rate: unknown\n");
else
seq_printf(seq, "present rate: %d %s\n",
- battery->current_now, acpi_battery_units(battery));
+ battery->rate_now, acpi_battery_units(battery));

if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "remaining capacity: unknown\n");
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 6050ce4..3963cb6 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -102,8 +102,8 @@ struct acpi_battery {
u16 cycle_count;
u16 temp_now;
u16 voltage_now;
- s16 current_now;
- s16 current_avg;
+ s16 rate_now;
+ s16 rate_avg;
u16 capacity_now;
u16 state_of_charge;
u16 state;
@@ -202,9 +202,9 @@ static int acpi_sbs_battery_get_property(struct power_supply *psy,
return -ENODEV;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
- if (battery->current_now < 0)
+ if (battery->rate_now < 0)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
- else if (battery->current_now > 0)
+ else if (battery->rate_now > 0)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else
val->intval = POWER_SUPPLY_STATUS_FULL;
@@ -224,11 +224,13 @@ static int acpi_sbs_battery_get_property(struct power_supply *psy,
acpi_battery_vscale(battery) * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = abs(battery->current_now) *
+ case POWER_SUPPLY_PROP_POWER_NOW:
+ val->intval = abs(battery->rate_now) *
acpi_battery_ipscale(battery) * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
- val->intval = abs(battery->current_avg) *
+ case POWER_SUPPLY_PROP_POWER_AVG:
+ val->intval = abs(battery->rate_avg) *
acpi_battery_ipscale(battery) * 1000;
break;
case POWER_SUPPLY_PROP_CAPACITY:
@@ -293,6 +295,8 @@ static enum power_supply_property sbs_energy_battery_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_POWER_NOW,
+ POWER_SUPPLY_PROP_POWER_AVG,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
POWER_SUPPLY_PROP_ENERGY_FULL,
@@ -301,6 +305,7 @@ static enum power_supply_property sbs_energy_battery_props[] = {
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
};
+
#endif

/* --------------------------------------------------------------------------
@@ -330,8 +335,8 @@ static struct acpi_battery_reader info_readers[] = {
static struct acpi_battery_reader state_readers[] = {
{0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)},
{0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)},
- {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_now)},
- {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_avg)},
+ {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)},
+ {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)},
{0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)},
{0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)},
{0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)},
@@ -589,9 +594,9 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
seq_printf(seq, "capacity state: %s\n",
(battery->state & 0x0010) ? "critical" : "ok");
seq_printf(seq, "charging state: %s\n",
- (battery->current_now < 0) ? "discharging" :
- ((battery->current_now > 0) ? "charging" : "charged"));
- rate = abs(battery->current_now) * acpi_battery_ipscale(battery);
+ (battery->rate_now < 0) ? "discharging" :
+ ((battery->rate_now > 0) ? "charging" : "charged"));
+ rate = abs(battery->rate_now) * acpi_battery_ipscale(battery);
rate *= (acpi_battery_mode(battery))?(battery->voltage_now *
acpi_battery_vscale(battery)/1000):1;
seq_printf(seq, "present rate: %d%s\n", rate,
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index ac01e06..da73591 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -93,6 +93,8 @@ static struct device_attribute power_supply_attrs[] = {
POWER_SUPPLY_ATTR(voltage_avg),
POWER_SUPPLY_ATTR(current_now),
POWER_SUPPLY_ATTR(current_avg),
+ POWER_SUPPLY_ATTR(power_now),
+ POWER_SUPPLY_ATTR(power_avg),
POWER_SUPPLY_ATTR(charge_full_design),
POWER_SUPPLY_ATTR(charge_empty_design),
POWER_SUPPLY_ATTR(charge_full),
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 8ff25e0..594c494 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -73,6 +73,8 @@ enum power_supply_property {
POWER_SUPPLY_PROP_VOLTAGE_AVG,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_POWER_NOW,
+ POWER_SUPPLY_PROP_POWER_AVG,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
POWER_SUPPLY_PROP_CHARGE_FULL,
--
1.6.0.6