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-rw-r--r--drivers/acpi/Kconfig9
-rw-r--r--drivers/acpi/sbs.c314
2 files changed, 237 insertions, 86 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 8560bc3b157..ba6a61f7aae 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -349,12 +349,11 @@ config ACPI_HOTPLUG_MEMORY
$>modprobe acpi_memhotplug
config ACPI_SBS
- tristate "Smart Battery System (EXPERIMENTAL)"
+ tristate "Smart Battery System"
depends on X86
- depends on EXPERIMENTAL
+ depends on POWER_SUPPLY
help
- This driver adds support for the Smart Battery System.
- A "Smart Battery" is quite old and quite rare compared
- to today's ACPI "Control Method" battery.
+ This driver adds support for the Smart Battery System, another
+ type of access to battery information, found on some laptops.
endif # ACPI
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 3351dea11ff..c4f9641147c 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -28,17 +28,20 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
+
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <asm/uaccess.h>
+
#include <linux/acpi.h>
#include <linux/timer.h>
#include <linux/jiffies.h>
#include <linux/delay.h>
+#include <linux/power_supply.h>
+
#include "sbshc.h"
-#define ACPI_SBS_COMPONENT 0x00080000
#define ACPI_SBS_CLASS "sbs"
#define ACPI_AC_CLASS "ac_adapter"
#define ACPI_BATTERY_CLASS "battery"
@@ -58,8 +61,6 @@ enum acpi_sbs_device_addr {
#define ACPI_SBS_NOTIFY_STATUS 0x80
#define ACPI_SBS_NOTIFY_INFO 0x81
-ACPI_MODULE_NAME("sbs");
-
MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
MODULE_LICENSE("GPL");
@@ -76,28 +77,14 @@ extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
#define MAX_SBS_BAT 4
#define ACPI_SBS_BLOCK_MAX 32
-static int acpi_sbs_add(struct acpi_device *device);
-static int acpi_sbs_remove(struct acpi_device *device, int type);
-static int acpi_sbs_resume(struct acpi_device *device);
-
static const struct acpi_device_id sbs_device_ids[] = {
{"ACPI0002", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
-static struct acpi_driver acpi_sbs_driver = {
- .name = "sbs",
- .class = ACPI_SBS_CLASS,
- .ids = sbs_device_ids,
- .ops = {
- .add = acpi_sbs_add,
- .remove = acpi_sbs_remove,
- .resume = acpi_sbs_resume,
- },
-};
-
struct acpi_battery {
+ struct power_supply bat;
struct acpi_sbs *sbs;
struct proc_dir_entry *proc_entry;
unsigned long update_time;
@@ -105,7 +92,7 @@ struct acpi_battery {
char manufacturer_name[ACPI_SBS_BLOCK_MAX];
char device_name[ACPI_SBS_BLOCK_MAX];
char device_chemistry[ACPI_SBS_BLOCK_MAX];
- u32 alarm_capacity;
+ u16 alarm_capacity;
u16 full_charge_capacity;
u16 design_capacity;
u16 design_voltage;
@@ -124,7 +111,10 @@ struct acpi_battery {
u8 present:1;
};
+#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
+
struct acpi_sbs {
+ struct power_supply charger;
struct acpi_device *device;
struct acpi_smb_hc *hc;
struct mutex lock;
@@ -135,6 +125,8 @@ struct acpi_sbs {
u8 charger_present:1;
};
+#define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger)
+
static inline int battery_scale(int log)
{
int scale = 1;
@@ -164,6 +156,144 @@ static inline int acpi_battery_scale(struct acpi_battery *battery)
acpi_battery_ipscale(battery);
}
+static int sbs_get_ac_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct acpi_sbs *sbs = to_acpi_sbs(psy);
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = sbs->charger_present;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int acpi_battery_technology(struct acpi_battery *battery)
+{
+ if (!strcasecmp("NiCd", battery->device_chemistry))
+ return POWER_SUPPLY_TECHNOLOGY_NiCd;
+ if (!strcasecmp("NiMH", battery->device_chemistry))
+ return POWER_SUPPLY_TECHNOLOGY_NiMH;
+ if (!strcasecmp("LION", battery->device_chemistry))
+ return POWER_SUPPLY_TECHNOLOGY_LION;
+ if (!strcasecmp("LiP", battery->device_chemistry))
+ return POWER_SUPPLY_TECHNOLOGY_LIPO;
+ return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
+}
+
+static int acpi_sbs_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct acpi_battery *battery = to_acpi_battery(psy);
+
+ if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT)
+ return -ENODEV;
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (battery->current_now < 0)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else if (battery->current_now > 0)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = battery->present;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = acpi_battery_technology(battery);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = battery->design_voltage *
+ acpi_battery_vscale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = battery->voltage_now *
+ acpi_battery_vscale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = abs(battery->current_now) *
+ acpi_battery_ipscale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = abs(battery->current_avg) *
+ acpi_battery_ipscale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = battery->state_of_charge;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+ val->intval = battery->design_capacity *
+ acpi_battery_scale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ val->intval = battery->full_charge_capacity *
+ acpi_battery_scale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ val->intval = battery->capacity_now *
+ acpi_battery_scale(battery) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = battery->temp_now - 2730; // dK -> dC
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = battery->device_name;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = battery->manufacturer_name;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property sbs_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property sbs_charge_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property sbs_energy_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+ POWER_SUPPLY_PROP_ENERGY_FULL,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
/* --------------------------------------------------------------------------
Smart Battery System Management
-------------------------------------------------------------------------- */
@@ -204,7 +334,7 @@ static int acpi_manager_get_info(struct acpi_sbs *sbs)
u16 battery_system_info;
result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
- 0x04, (u8 *) & battery_system_info);
+ 0x04, (u8 *)&battery_system_info);
if (!result)
sbs->batteries_supported = battery_system_info & 0x000f;
return result;
@@ -215,9 +345,12 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
int i, result = 0;
for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
- result = acpi_smbus_read(battery->sbs->hc, info_readers[i].mode,
- ACPI_SBS_BATTERY, info_readers[i].command,
- (u8 *) battery + info_readers[i].offset);
+ result = acpi_smbus_read(battery->sbs->hc,
+ info_readers[i].mode,
+ ACPI_SBS_BATTERY,
+ info_readers[i].command,
+ (u8 *) battery +
+ info_readers[i].offset);
if (result)
break;
}
@@ -228,7 +361,8 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
{
int i, result = 0;
- if (time_before(jiffies, battery->update_time +
+ if (battery->update_time &&
+ time_before(jiffies, battery->update_time +
msecs_to_jiffies(cache_time)))
return 0;
for (i = 0; i < ARRAY_SIZE(state_readers); ++i) {
@@ -250,26 +384,36 @@ static int acpi_battery_get_alarm(struct acpi_battery *battery)
{
return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
ACPI_SBS_BATTERY, 0x01,
- (u8 *) & battery->alarm_capacity);
+ (u8 *)&battery->alarm_capacity);
}
static int acpi_battery_set_alarm(struct acpi_battery *battery)
{
struct acpi_sbs *sbs = battery->sbs;
- u16 value;
- return 0;
+ u16 value, sel = 1 << (battery->id + 12);
+
+ int ret;
+
if (sbs->manager_present) {
- acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
+ ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
0x01, (u8 *)&value);
- value &= 0x0fff;
- value |= 1 << (battery->id + 12);
- acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_MANAGER,
- 0x01, (u8 *)&value, 2);
+ if (ret)
+ goto end;
+ if ((value & 0xf000) != sel) {
+ value &= 0x0fff;
+ value |= sel;
+ ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
+ ACPI_SBS_MANAGER,
+ 0x01, (u8 *)&value, 2);
+ if (ret)
+ goto end;
+ }
}
- value = battery->alarm_capacity / (acpi_battery_mode(battery) ? 10 : 1);
- return acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
- 0x01, (u8 *)&value, 2);
+ ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
+ 0x01, (u8 *)&battery->alarm_capacity, 2);
+ end:
+ return ret;
}
static int acpi_ac_get_present(struct acpi_sbs *sbs)
@@ -289,22 +433,19 @@ static int acpi_ac_get_present(struct acpi_sbs *sbs)
-------------------------------------------------------------------------- */
/* Generic Routines */
-
static int
acpi_sbs_add_fs(struct proc_dir_entry **dir,
- struct proc_dir_entry *parent_dir,
- char *dir_name,
- struct file_operations *info_fops,
- struct file_operations *state_fops,
- struct file_operations *alarm_fops, void *data)
+ struct proc_dir_entry *parent_dir,
+ char *dir_name,
+ struct file_operations *info_fops,
+ struct file_operations *state_fops,
+ struct file_operations *alarm_fops, void *data)
{
struct proc_dir_entry *entry = NULL;
if (!*dir) {
*dir = proc_mkdir(dir_name, parent_dir);
if (!*dir) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "proc_mkdir() failed"));
return -ENODEV;
}
(*dir)->owner = THIS_MODULE;
@@ -313,10 +454,7 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir,
/* 'info' [R] */
if (info_fops) {
entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir);
- if (!entry) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "create_proc_entry() failed"));
- } else {
+ if (entry) {
entry->proc_fops = info_fops;
entry->data = data;
entry->owner = THIS_MODULE;
@@ -326,10 +464,7 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir,
/* 'state' [R] */
if (state_fops) {
entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir);
- if (!entry) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "create_proc_entry() failed"));
- } else {
+ if (entry) {
entry->proc_fops = state_fops;
entry->data = data;
entry->owner = THIS_MODULE;
@@ -339,16 +474,12 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir,
/* 'alarm' [R/W] */
if (alarm_fops) {
entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir);
- if (!entry) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "create_proc_entry() failed"));
- } else {
+ if (entry) {
entry->proc_fops = alarm_fops;
entry->data = data;
entry->owner = THIS_MODULE;
}
}
-
return 0;
}
@@ -356,7 +487,6 @@ static void
acpi_sbs_remove_fs(struct proc_dir_entry **dir,
struct proc_dir_entry *parent_dir)
{
-
if (*dir) {
remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
@@ -364,11 +494,9 @@ acpi_sbs_remove_fs(struct proc_dir_entry **dir,
remove_proc_entry((*dir)->name, parent_dir);
*dir = NULL;
}
-
}
/* Smart Battery Interface */
-
static struct proc_dir_entry *acpi_battery_dir = NULL;
static inline char *acpi_battery_units(struct acpi_battery *battery)
@@ -506,7 +634,8 @@ acpi_battery_write_alarm(struct file *file, const char __user * buffer,
goto end;
}
alarm_string[count] = 0;
- battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0);
+ battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
+ acpi_battery_scale(battery);
acpi_battery_set_alarm(battery);
end:
mutex_unlock(&sbs->lock);
@@ -579,9 +708,6 @@ static struct file_operations acpi_ac_state_fops = {
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
-
-/* Smart Battery */
-
static int acpi_battery_read(struct acpi_battery *battery)
{
int result = 0, saved_present = battery->present;
@@ -611,13 +737,14 @@ static int acpi_battery_read(struct acpi_battery *battery)
return result;
}
+/* Smart Battery */
static int acpi_battery_add(struct acpi_sbs *sbs, int id)
{
- int result;
struct acpi_battery *battery = &sbs->battery[id];
+ int result;
+
battery->id = id;
battery->sbs = sbs;
- battery->update_time = 0;
result = acpi_battery_read(battery);
if (result)
return result;
@@ -627,6 +754,19 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id)
battery->name, &acpi_battery_info_fops,
&acpi_battery_state_fops, &acpi_battery_alarm_fops,
battery);
+ battery->bat.name = battery->name;
+ battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ if (!acpi_battery_mode(battery)) {
+ battery->bat.properties = sbs_charge_battery_props;
+ battery->bat.num_properties =
+ ARRAY_SIZE(sbs_charge_battery_props);
+ } else {
+ battery->bat.properties = sbs_energy_battery_props;
+ battery->bat.num_properties =
+ ARRAY_SIZE(sbs_energy_battery_props);
+ }
+ battery->bat.get_property = acpi_sbs_battery_get_property;
+ result = power_supply_register(&sbs->device->dev, &battery->bat);
printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
battery->name, sbs->battery->present ? "present" : "absent");
@@ -635,7 +775,8 @@ static int acpi_battery_add(struct acpi_sbs *sbs, int id)
static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
{
-
+ if (sbs->battery[id].bat.dev)
+ power_supply_unregister(&sbs->battery[id].bat);
if (sbs->battery[id].proc_entry) {
acpi_sbs_remove_fs(&(sbs->battery[id].proc_entry),
acpi_battery_dir);
@@ -654,6 +795,12 @@ static int acpi_charger_add(struct acpi_sbs *sbs)
&acpi_ac_state_fops, NULL, sbs);
if (result)
goto end;
+ sbs->charger.name = "sbs-charger";
+ sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
+ sbs->charger.properties = sbs_ac_props;
+ sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
+ sbs->charger.get_property = sbs_get_ac_property;
+ power_supply_register(&sbs->device->dev, &sbs->charger);
printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
@@ -663,7 +810,8 @@ static int acpi_charger_add(struct acpi_sbs *sbs)
static void acpi_charger_remove(struct acpi_sbs *sbs)
{
-
+ if (sbs->charger.dev)
+ power_supply_unregister(&sbs->charger);
if (sbs->charger_entry)
acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
}
@@ -677,9 +825,12 @@ void acpi_sbs_callback(void *context)
u8 saved_battery_state;
acpi_ac_get_present(sbs);
if (sbs->charger_present != saved_charger_state) {
+#ifdef CONFIG_ACPI_PROC_EVENT
acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
ACPI_SBS_NOTIFY_STATUS,
sbs->charger_present);
+#endif
+ kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
}
if (sbs->manager_present) {
for (id = 0; id < MAX_SBS_BAT; ++id) {
@@ -690,10 +841,13 @@ void acpi_sbs_callback(void *context)
acpi_battery_read(bat);
if (saved_battery_state == bat->present)
continue;
+#ifdef CONFIG_ACPI_PROC_EVENT
acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
bat->name,
ACPI_SBS_NOTIFY_STATUS,
bat->present);
+#endif
+ kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
}
}
}
@@ -782,45 +936,43 @@ static int acpi_sbs_resume(struct acpi_device *device)
return 0;
}
+static struct acpi_driver acpi_sbs_driver = {
+ .name = "sbs",
+ .class = ACPI_SBS_CLASS,
+ .ids = sbs_device_ids,
+ .ops = {
+ .add = acpi_sbs_add,
+ .remove = acpi_sbs_remove,
+ .resume = acpi_sbs_resume,
+ },
+};
+
static int __init acpi_sbs_init(void)
{
int result = 0;
if (acpi_disabled)
return -ENODEV;
-
acpi_ac_dir = acpi_lock_ac_dir();
- if (!acpi_ac_dir) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "acpi_lock_ac_dir() failed"));
+ if (!acpi_ac_dir)
return -ENODEV;
- }
-
acpi_battery_dir = acpi_lock_battery_dir();
if (!acpi_battery_dir) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "acpi_lock_battery_dir() failed"));
acpi_sbs_rmdirs();
return -ENODEV;
}
-
result = acpi_bus_register_driver(&acpi_sbs_driver);
if (result < 0) {
- ACPI_EXCEPTION((AE_INFO, AE_ERROR,
- "acpi_bus_register_driver() failed"));
acpi_sbs_rmdirs();
return -ENODEV;
}
-
return 0;
}
static void __exit acpi_sbs_exit(void)
{
acpi_bus_unregister_driver(&acpi_sbs_driver);
-
acpi_sbs_rmdirs();
-
return;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 03:29:05 +0000