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Diffstat (limited to 'drivers/staging/nvec/nvec_power.c')
-rw-r--r--drivers/staging/nvec/nvec_power.c352
1 files changed, 180 insertions, 172 deletions
diff --git a/drivers/staging/nvec/nvec_power.c b/drivers/staging/nvec/nvec_power.c
index df164ad..dfa966f 100644
--- a/drivers/staging/nvec/nvec_power.c
+++ b/drivers/staging/nvec/nvec_power.c
@@ -1,3 +1,17 @@
+/*
+ * nvec_power: power supply driver for a NVIDIA compliant embedded controller
+ *
+ * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.launchpad.net>
+ *
+ * Authors: Ilya Petrov <ilya.muromec@gmail.com>
+ * Marc Dietrich <marvin24@gmx.de>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
@@ -5,10 +19,10 @@
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
+
#include "nvec.h"
-struct nvec_power
-{
+struct nvec_power {
struct notifier_block notifier;
struct delayed_work poller;
struct nvec_chip *nvec;
@@ -58,7 +72,8 @@ struct bat_response {
u8 length;
u8 sub_type;
u8 status;
- union { /* payload */
+ /* payload */
+ union {
char plc[30];
u16 plu;
s16 pls;
@@ -69,18 +84,17 @@ static struct power_supply nvec_bat_psy;
static struct power_supply nvec_psy;
static int nvec_power_notifier(struct notifier_block *nb,
- unsigned long event_type, void *data)
+ unsigned long event_type, void *data)
{
- struct nvec_power *power = container_of(nb, struct nvec_power, notifier);
+ struct nvec_power *power =
+ container_of(nb, struct nvec_power, notifier);
struct bat_response *res = (struct bat_response *)data;
if (event_type != NVEC_SYS)
return NOTIFY_DONE;
- if(res->sub_type == 0)
- {
- if (power->on != res->plu)
- {
+ if (res->sub_type == 0) {
+ if (power->on != res->plu) {
power->on = res->plu;
power_supply_changed(&nvec_psy);
}
@@ -89,8 +103,7 @@ static int nvec_power_notifier(struct notifier_block *nb,
return NOTIFY_OK;
}
-static const int bat_init[] =
-{
+static const int bat_init[] = {
LAST_FULL_CHARGE_CAPACITY, DESIGN_CAPACITY, CRITICAL_CAPACITY,
MANUFACTURER, MODEL, TYPE,
};
@@ -100,116 +113,115 @@ static void get_bat_mfg_data(struct nvec_power *power)
int i;
char buf[] = { '\x02', '\x00' };
- for (i = 0; i < ARRAY_SIZE(bat_init); i++)
- {
+ for (i = 0; i < ARRAY_SIZE(bat_init); i++) {
buf[1] = bat_init[i];
nvec_write_async(power->nvec, buf, 2);
}
}
static int nvec_power_bat_notifier(struct notifier_block *nb,
- unsigned long event_type, void *data)
+ unsigned long event_type, void *data)
{
- struct nvec_power *power = container_of(nb, struct nvec_power, notifier);
+ struct nvec_power *power =
+ container_of(nb, struct nvec_power, notifier);
struct bat_response *res = (struct bat_response *)data;
int status_changed = 0;
if (event_type != NVEC_BAT)
return NOTIFY_DONE;
- switch(res->sub_type)
- {
- case SLOT_STATUS:
- if (res->plc[0] & 1)
- {
- if (power->bat_present == 0)
- {
- status_changed = 1;
- get_bat_mfg_data(power);
- }
-
- power->bat_present = 1;
-
- switch ((res->plc[0] >> 1) & 3)
- {
- case 0:
- power->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
- break;
- case 1:
- power->bat_status = POWER_SUPPLY_STATUS_CHARGING;
- break;
- case 2:
- power->bat_status = POWER_SUPPLY_STATUS_DISCHARGING;
- break;
- default:
- power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
- }
- } else {
- if (power->bat_present == 1)
- status_changed = 1;
-
- power->bat_present = 0;
+ switch (res->sub_type) {
+ case SLOT_STATUS:
+ if (res->plc[0] & 1) {
+ if (power->bat_present == 0) {
+ status_changed = 1;
+ get_bat_mfg_data(power);
+ }
+
+ power->bat_present = 1;
+
+ switch ((res->plc[0] >> 1) & 3) {
+ case 0:
+ power->bat_status =
+ POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case 1:
+ power->bat_status =
+ POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case 2:
+ power->bat_status =
+ POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ default:
power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
}
- power->bat_cap = res->plc[1];
- if (status_changed)
- power_supply_changed(&nvec_bat_psy);
- break;
- case VOLTAGE:
- power->bat_voltage_now = res->plu * 1000;
- break;
- case TIME_REMAINING:
- power->time_remain = res->plu * 3600;
- break;
- case CURRENT:
- power->bat_current_now = res->pls * 1000;
- break;
- case AVERAGE_CURRENT:
- power->bat_current_avg = res->pls * 1000;
- break;
- case CAPACITY_REMAINING:
- power->capacity_remain = res->plu * 1000;
- break;
- case LAST_FULL_CHARGE_CAPACITY:
- power->charge_last_full = res->plu * 1000;
- break;
- case DESIGN_CAPACITY:
- power->charge_full_design = res->plu * 1000;
- break;
- case CRITICAL_CAPACITY:
- power->critical_capacity = res->plu * 1000;
- break;
- case TEMPERATURE:
- power->bat_temperature = res->plu - 2732;
- break;
- case MANUFACTURER:
- memcpy(power->bat_manu, &res->plc, res->length-2);
- power->bat_model[res->length-2] = '\0';
- break;
- case MODEL:
- memcpy(power->bat_model, &res->plc, res->length-2);
- power->bat_model[res->length-2] = '\0';
- break;
- case TYPE:
- memcpy(power->bat_type, &res->plc, res->length-2);
- power->bat_type[res->length-2] = '\0';
- /* this differs a little from the spec
- fill in more if you find some */
- if (!strncmp(power->bat_type, "Li", 30))
- power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_LION;
- else
- power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
- break;
- default:
- return NOTIFY_STOP;
+ } else {
+ if (power->bat_present == 1)
+ status_changed = 1;
+
+ power->bat_present = 0;
+ power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+ power->bat_cap = res->plc[1];
+ if (status_changed)
+ power_supply_changed(&nvec_bat_psy);
+ break;
+ case VOLTAGE:
+ power->bat_voltage_now = res->plu * 1000;
+ break;
+ case TIME_REMAINING:
+ power->time_remain = res->plu * 3600;
+ break;
+ case CURRENT:
+ power->bat_current_now = res->pls * 1000;
+ break;
+ case AVERAGE_CURRENT:
+ power->bat_current_avg = res->pls * 1000;
+ break;
+ case CAPACITY_REMAINING:
+ power->capacity_remain = res->plu * 1000;
+ break;
+ case LAST_FULL_CHARGE_CAPACITY:
+ power->charge_last_full = res->plu * 1000;
+ break;
+ case DESIGN_CAPACITY:
+ power->charge_full_design = res->plu * 1000;
+ break;
+ case CRITICAL_CAPACITY:
+ power->critical_capacity = res->plu * 1000;
+ break;
+ case TEMPERATURE:
+ power->bat_temperature = res->plu - 2732;
+ break;
+ case MANUFACTURER:
+ memcpy(power->bat_manu, &res->plc, res->length - 2);
+ power->bat_model[res->length - 2] = '\0';
+ break;
+ case MODEL:
+ memcpy(power->bat_model, &res->plc, res->length - 2);
+ power->bat_model[res->length - 2] = '\0';
+ break;
+ case TYPE:
+ memcpy(power->bat_type, &res->plc, res->length - 2);
+ power->bat_type[res->length - 2] = '\0';
+ /* this differs a little from the spec
+ fill in more if you find some */
+ if (!strncmp(power->bat_type, "Li", 30))
+ power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_LION;
+ else
+ power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
+ break;
+ default:
+ return NOTIFY_STOP;
}
return NOTIFY_STOP;
}
static int nvec_power_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
+ enum power_supply_property psp,
+ union power_supply_propval *val)
{
struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
switch (psp) {
@@ -223,61 +235,60 @@ static int nvec_power_get_property(struct power_supply *psy,
}
static int nvec_battery_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
+ enum power_supply_property psp,
+ union power_supply_propval *val)
{
struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
- switch(psp)
- {
- case POWER_SUPPLY_PROP_STATUS:
- val->intval = power->bat_status;
- break;
- case POWER_SUPPLY_PROP_CAPACITY:
- val->intval = power->bat_cap;
- break;
- case POWER_SUPPLY_PROP_PRESENT:
- val->intval = power->bat_present;
- break;
- case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- val->intval = power->bat_voltage_now;
- break;
- case POWER_SUPPLY_PROP_CURRENT_NOW:
- val->intval = power->bat_current_now;
- break;
- case POWER_SUPPLY_PROP_CURRENT_AVG:
- val->intval = power->bat_current_avg;
- break;
- case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
- val->intval = power->time_remain;
- break;
- case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
- val->intval = power->charge_full_design;
- break;
- case POWER_SUPPLY_PROP_CHARGE_FULL:
- val->intval = power->charge_last_full;
- break;
- case POWER_SUPPLY_PROP_CHARGE_EMPTY:
- val->intval = power->critical_capacity;
- break;
- case POWER_SUPPLY_PROP_CHARGE_NOW:
- val->intval = power->capacity_remain;
- break;
- case POWER_SUPPLY_PROP_TEMP:
- val->intval = power->bat_temperature;
- break;
- case POWER_SUPPLY_PROP_MANUFACTURER:
- val->strval = power->bat_manu;
- break;
- case POWER_SUPPLY_PROP_MODEL_NAME:
- val->strval = power->bat_model;
- break;
- case POWER_SUPPLY_PROP_TECHNOLOGY:
- val->intval = power->bat_type_enum;
- break;
- default:
- return -EINVAL;
- }
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = power->bat_status;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = power->bat_cap;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = power->bat_present;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = power->bat_voltage_now;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = power->bat_current_now;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = power->bat_current_avg;
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ val->intval = power->time_remain;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = power->charge_full_design;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = power->charge_last_full;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_EMPTY:
+ val->intval = power->critical_capacity;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = power->capacity_remain;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = power->bat_temperature;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = power->bat_manu;
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = power->bat_model;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = power->bat_type_enum;
+ break;
+ default:
+ return -EINVAL;
+ }
return 0;
}
@@ -310,11 +321,11 @@ static char *nvec_power_supplied_to[] = {
};
static struct power_supply nvec_bat_psy = {
- .name = "battery",
- .type = POWER_SUPPLY_TYPE_BATTERY,
- .properties = nvec_battery_props,
- .num_properties = ARRAY_SIZE(nvec_battery_props),
- .get_property = nvec_battery_get_property,
+ .name = "battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = nvec_battery_props,
+ .num_properties = ARRAY_SIZE(nvec_battery_props),
+ .get_property = nvec_battery_get_property,
};
static struct power_supply nvec_psy = {
@@ -327,9 +338,8 @@ static struct power_supply nvec_psy = {
.get_property = nvec_power_get_property,
};
-static int counter = 0;
-static int const bat_iter[] =
-{
+static int counter;
+static int const bat_iter[] = {
SLOT_STATUS, VOLTAGE, CURRENT, CAPACITY_REMAINING,
#ifdef EC_FULL_DIAG
AVERAGE_CURRENT, TEMPERATURE, TIME_REMAINING,
@@ -340,7 +350,7 @@ static void nvec_power_poll(struct work_struct *work)
{
char buf[] = { '\x01', '\x00' };
struct nvec_power *power = container_of(work, struct nvec_power,
- poller.work);
+ poller.work);
if (counter >= ARRAY_SIZE(bat_iter))
counter = 0;
@@ -351,19 +361,18 @@ static void nvec_power_poll(struct work_struct *work)
/* select a battery request function via round robin
doing it all at once seems to overload the power supply */
- buf[0] = '\x02'; /* battery */
- buf[1] = bat_iter[counter++];
+ buf[0] = '\x02'; /* battery */
+ buf[1] = bat_iter[counter++];
nvec_write_async(power->nvec, buf, 2);
-// printk("%02x %02x\n", buf[0], buf[1]);
-
schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(5000));
};
static int __devinit nvec_power_probe(struct platform_device *pdev)
{
struct power_supply *psy;
- struct nvec_power *power = kzalloc(sizeof(struct nvec_power), GFP_NOWAIT);
+ struct nvec_power *power =
+ kzalloc(sizeof(struct nvec_power), GFP_NOWAIT);
struct nvec_chip *nvec = dev_get_drvdata(pdev->dev.parent);
dev_set_drvdata(&pdev->dev, power);
@@ -381,7 +390,7 @@ static int __devinit nvec_power_probe(struct platform_device *pdev)
case BAT:
psy = &nvec_bat_psy;
- power->notifier.notifier_call = nvec_power_bat_notifier;
+ power->notifier.notifier_call = nvec_power_bat_notifier;
break;
default:
kfree(power);
@@ -398,14 +407,13 @@ static int __devinit nvec_power_probe(struct platform_device *pdev)
static struct platform_driver nvec_power_driver = {
.probe = nvec_power_probe,
-// .remove = __devexit_p(nvec_power_remove),
.driver = {
- .name = "nvec-power",
- .owner = THIS_MODULE,
- }
+ .name = "nvec-power",
+ .owner = THIS_MODULE,
+ }
};
-static int __init nvec_power_init(void)
+static int __init nvec_power_init(void)
{
return platform_driver_register(&nvec_power_driver);
}