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path: root/drivers/power/ds2760_battery.c
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Diffstat (limited to 'drivers/power/ds2760_battery.c')
-rw-r--r--drivers/power/ds2760_battery.c112
1 files changed, 84 insertions, 28 deletions
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 6f1dba5a519..85b4e6eca0b 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -24,6 +24,7 @@
#include <linux/jiffies.h>
#include <linux/workqueue.h>
#include <linux/pm.h>
+#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
@@ -63,7 +64,7 @@ static unsigned int cache_time = 1000;
module_param(cache_time, uint, 0644);
MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
-static unsigned int pmod_enabled;
+static bool pmod_enabled;
module_param(pmod_enabled, bool, 0644);
MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
@@ -85,12 +86,20 @@ static int rated_capacities[] = {
920, /* NEC */
1440, /* Samsung */
1440, /* BYD */
+#ifdef CONFIG_MACH_H4700
+ 1800, /* HP iPAQ hx4700 3.7V 1800mAh (359113-001) */
+#else
1440, /* Lishen */
+#endif
1440, /* NEC */
2880, /* Samsung */
2880, /* BYD */
2880, /* Lishen */
- 2880 /* NEC */
+ 2880, /* NEC */
+#ifdef CONFIG_MACH_H4700
+ 0,
+ 3600, /* HP iPAQ hx4700 3.7V 3600mAh (359114-001) */
+#endif
};
/* array is level at temps 0°C, 10°C, 20°C, 30°C, 40°C
@@ -185,7 +194,7 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
scale[0] = di->full_active_uAh;
for (i = 1; i < 5; i++)
- scale[i] = scale[i - 1] + di->raw[DS2760_ACTIVE_FULL + 2 + i];
+ scale[i] = scale[i - 1] + di->raw[DS2760_ACTIVE_FULL + 1 + i];
di->full_active_uAh = battery_interpolate(scale, di->temp_C / 10);
di->full_active_uAh *= 1000; /* convert to µAh */
@@ -211,7 +220,7 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
if (di->rem_capacity > 100)
di->rem_capacity = 100;
- if (di->current_uA >= 100L)
+ if (di->current_uA < -100L)
di->life_sec = -((di->accum_current_uAh - di->empty_uAh) * 36L)
/ (di->current_uA / 100L);
else
@@ -303,6 +312,28 @@ static void ds2760_battery_write_rated_capacity(struct ds2760_device_info *di,
w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
}
+static void ds2760_battery_write_active_full(struct ds2760_device_info *di,
+ int active_full)
+{
+ unsigned char tmp[2] = {
+ active_full >> 8,
+ active_full & 0xff
+ };
+
+ if (tmp[0] == di->raw[DS2760_ACTIVE_FULL] &&
+ tmp[1] == di->raw[DS2760_ACTIVE_FULL + 1])
+ return;
+
+ w1_ds2760_write(di->w1_dev, tmp, DS2760_ACTIVE_FULL, sizeof(tmp));
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK0);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK0);
+
+ /* Write to the di->raw[] buffer directly - the DS2760_ACTIVE_FULL
+ * values won't be read back by ds2760_battery_read_status() */
+ di->raw[DS2760_ACTIVE_FULL] = tmp[0];
+ di->raw[DS2760_ACTIVE_FULL + 1] = tmp[1];
+}
+
static void ds2760_battery_work(struct work_struct *work)
{
struct ds2760_device_info *di = container_of(work,
@@ -324,8 +355,7 @@ static void ds2760_battery_external_power_changed(struct power_supply *psy)
dev_dbg(di->dev, "%s\n", __func__);
- cancel_delayed_work(&di->monitor_work);
- queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ/10);
+ mod_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ/10);
}
@@ -370,8 +400,7 @@ static void ds2760_battery_set_charged(struct power_supply *psy)
/* postpone the actual work by 20 secs. This is for debouncing GPIO
* signals and to let the current value settle. See AN4188. */
- cancel_delayed_work(&di->set_charged_work);
- queue_delayed_work(di->monitor_wqueue, &di->set_charged_work, HZ * 20);
+ mod_delayed_work(di->monitor_wqueue, &di->set_charged_work, HZ * 20);
}
static int ds2760_battery_get_property(struct power_supply *psy,
@@ -425,6 +454,45 @@ static int ds2760_battery_get_property(struct power_supply *psy,
return 0;
}
+static int ds2760_battery_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct ds2760_device_info *di = to_ds2760_device_info(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ /* the interface counts in uAh, convert the value */
+ ds2760_battery_write_active_full(di, val->intval / 1000L);
+ break;
+
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ /* ds2760_battery_set_current_accum() does the conversion */
+ ds2760_battery_set_current_accum(di, val->intval);
+ break;
+
+ default:
+ return -EPERM;
+ }
+
+ return 0;
+}
+
+static int ds2760_battery_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ return 1;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
static enum power_supply_property ds2760_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
@@ -444,7 +512,7 @@ static int ds2760_battery_probe(struct platform_device *pdev)
int retval = 0;
struct ds2760_device_info *di;
- di = kzalloc(sizeof(*di), GFP_KERNEL);
+ di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
if (!di) {
retval = -ENOMEM;
goto di_alloc_failed;
@@ -459,6 +527,9 @@ static int ds2760_battery_probe(struct platform_device *pdev)
di->bat.properties = ds2760_battery_props;
di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
di->bat.get_property = ds2760_battery_get_property;
+ di->bat.set_property = ds2760_battery_set_property;
+ di->bat.property_is_writeable =
+ ds2760_battery_property_is_writeable;
di->bat.set_charged = ds2760_battery_set_charged;
di->bat.external_power_changed =
ds2760_battery_external_power_changed;
@@ -505,7 +576,6 @@ static int ds2760_battery_probe(struct platform_device *pdev)
workqueue_failed:
power_supply_unregister(&di->bat);
batt_failed:
- kfree(di);
di_alloc_failed:
success:
return retval;
@@ -515,10 +585,8 @@ static int ds2760_battery_remove(struct platform_device *pdev)
{
struct ds2760_device_info *di = platform_get_drvdata(pdev);
- cancel_rearming_delayed_workqueue(di->monitor_wqueue,
- &di->monitor_work);
- cancel_rearming_delayed_workqueue(di->monitor_wqueue,
- &di->set_charged_work);
+ cancel_delayed_work_sync(&di->monitor_work);
+ cancel_delayed_work_sync(&di->set_charged_work);
destroy_workqueue(di->monitor_wqueue);
power_supply_unregister(&di->bat);
@@ -544,8 +612,7 @@ static int ds2760_battery_resume(struct platform_device *pdev)
di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
power_supply_changed(&di->bat);
- cancel_delayed_work(&di->monitor_work);
- queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ);
+ mod_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ);
return 0;
}
@@ -569,18 +636,7 @@ static struct platform_driver ds2760_battery_driver = {
.resume = ds2760_battery_resume,
};
-static int __init ds2760_battery_init(void)
-{
- return platform_driver_register(&ds2760_battery_driver);
-}
-
-static void __exit ds2760_battery_exit(void)
-{
- platform_driver_unregister(&ds2760_battery_driver);
-}
-
-module_init(ds2760_battery_init);
-module_exit(ds2760_battery_exit);
+module_platform_driver(ds2760_battery_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>, "
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 22:08:14 +0000