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-rw-r--r--drivers/power/Kconfig7
-rw-r--r--drivers/power/Makefile1
-rw-r--r--drivers/power/ds2760_battery.c147
-rw-r--r--drivers/power/olpc_battery.c50
-rw-r--r--drivers/power/power_supply_core.c44
-rw-r--r--drivers/power/power_supply_sysfs.c12
-rw-r--r--drivers/power/wm831x_power.c779
-rw-r--r--drivers/power/wm8350_power.c22
-rw-r--r--drivers/power/wm97xx_battery.c79
9 files changed, 1089 insertions, 52 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index bdbc4f73fcdc..cea6cef27e89 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -29,6 +29,13 @@ config APM_POWER
Say Y here to enable support APM status emulation using
battery class devices.
+config WM831X_POWER
+ tristate "WM831X PMU support"
+ depends on MFD_WM831X
+ help
+ Say Y here to enable support for the power management unit
+ provided by Wolfson Microelectronics WM831x PMICs.
+
config WM8350_POWER
tristate "WM8350 PMU support"
depends on MFD_WM8350
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 380d17c9ae29..b96f29d91c28 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_POWER_SUPPLY) += power_supply.o
obj-$(CONFIG_PDA_POWER) += pda_power.o
obj-$(CONFIG_APM_POWER) += apm_power.o
+obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 520b5c49ff30..6f1dba5a519d 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -56,6 +56,7 @@ struct ds2760_device_info {
struct device *w1_dev;
struct workqueue_struct *monitor_wqueue;
struct delayed_work monitor_work;
+ struct delayed_work set_charged_work;
};
static unsigned int cache_time = 1000;
@@ -66,6 +67,14 @@ static unsigned int pmod_enabled;
module_param(pmod_enabled, bool, 0644);
MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
+static unsigned int rated_capacity;
+module_param(rated_capacity, uint, 0644);
+MODULE_PARM_DESC(rated_capacity, "rated battery capacity, 10*mAh or index");
+
+static unsigned int current_accum;
+module_param(current_accum, uint, 0644);
+MODULE_PARM_DESC(current_accum, "current accumulator value");
+
/* Some batteries have their rated capacity stored a N * 10 mAh, while
* others use an index into this table. */
static int rated_capacities[] = {
@@ -168,8 +177,13 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
di->full_active_uAh = di->raw[DS2760_ACTIVE_FULL] << 8 |
di->raw[DS2760_ACTIVE_FULL + 1];
- scale[0] = di->raw[DS2760_ACTIVE_FULL] << 8 |
- di->raw[DS2760_ACTIVE_FULL + 1];
+ /* If the full_active_uAh value is not given, fall back to the rated
+ * capacity. This is likely to happen when chips are not part of the
+ * battery pack and is therefore not bootstrapped. */
+ if (di->full_active_uAh == 0)
+ di->full_active_uAh = di->rated_capacity / 1000L;
+
+ scale[0] = di->full_active_uAh;
for (i = 1; i < 5; i++)
scale[i] = scale[i - 1] + di->raw[DS2760_ACTIVE_FULL + 2 + i];
@@ -197,15 +211,31 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
if (di->rem_capacity > 100)
di->rem_capacity = 100;
- if (di->current_uA)
- di->life_sec = -((di->accum_current_uAh - di->empty_uAh) *
- 3600L) / di->current_uA;
+ if (di->current_uA >= 100L)
+ di->life_sec = -((di->accum_current_uAh - di->empty_uAh) * 36L)
+ / (di->current_uA / 100L);
else
di->life_sec = 0;
return 0;
}
+static void ds2760_battery_set_current_accum(struct ds2760_device_info *di,
+ unsigned int acr_val)
+{
+ unsigned char acr[2];
+
+ /* acr is in units of 0.25 mAh */
+ acr_val *= 4L;
+ acr_val /= 1000;
+
+ acr[0] = acr_val >> 8;
+ acr[1] = acr_val & 0xff;
+
+ if (w1_ds2760_write(di->w1_dev, acr, DS2760_CURRENT_ACCUM_MSB, 2) < 2)
+ dev_warn(di->dev, "ACR write failed\n");
+}
+
static void ds2760_battery_update_status(struct ds2760_device_info *di)
{
int old_charge_status = di->charge_status;
@@ -237,21 +267,9 @@ static void ds2760_battery_update_status(struct ds2760_device_info *di)
if (di->full_counter < 2) {
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
} else {
- unsigned char acr[2];
- int acr_val;
-
- /* acr is in units of 0.25 mAh */
- acr_val = di->full_active_uAh * 4L / 1000;
-
- acr[0] = acr_val >> 8;
- acr[1] = acr_val & 0xff;
-
- if (w1_ds2760_write(di->w1_dev, acr,
- DS2760_CURRENT_ACCUM_MSB, 2) < 2)
- dev_warn(di->dev,
- "ACR reset failed\n");
-
di->charge_status = POWER_SUPPLY_STATUS_FULL;
+ ds2760_battery_set_current_accum(di,
+ di->full_active_uAh);
}
}
} else {
@@ -274,6 +292,17 @@ static void ds2760_battery_write_status(struct ds2760_device_info *di,
w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
}
+static void ds2760_battery_write_rated_capacity(struct ds2760_device_info *di,
+ unsigned char rated_capacity)
+{
+ if (rated_capacity == di->raw[DS2760_RATED_CAPACITY])
+ return;
+
+ w1_ds2760_write(di->w1_dev, &rated_capacity, DS2760_RATED_CAPACITY, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
static void ds2760_battery_work(struct work_struct *work)
{
struct ds2760_device_info *di = container_of(work,
@@ -299,6 +328,52 @@ static void ds2760_battery_external_power_changed(struct power_supply *psy)
queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ/10);
}
+
+static void ds2760_battery_set_charged_work(struct work_struct *work)
+{
+ char bias;
+ struct ds2760_device_info *di = container_of(work,
+ struct ds2760_device_info, set_charged_work.work);
+
+ dev_dbg(di->dev, "%s\n", __func__);
+
+ ds2760_battery_read_status(di);
+
+ /* When we get notified by external circuitry that the battery is
+ * considered fully charged now, we know that there is no current
+ * flow any more. However, the ds2760's internal current meter is
+ * too inaccurate to rely on - spec say something ~15% failure.
+ * Hence, we use the current offset bias register to compensate
+ * that error.
+ */
+
+ if (!power_supply_am_i_supplied(&di->bat))
+ return;
+
+ bias = (signed char) di->current_raw +
+ (signed char) di->raw[DS2760_CURRENT_OFFSET_BIAS];
+
+ dev_dbg(di->dev, "%s: bias = %d\n", __func__, bias);
+
+ w1_ds2760_write(di->w1_dev, &bias, DS2760_CURRENT_OFFSET_BIAS, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+
+ /* Write to the di->raw[] buffer directly - the CURRENT_OFFSET_BIAS
+ * value won't be read back by ds2760_battery_read_status() */
+ di->raw[DS2760_CURRENT_OFFSET_BIAS] = bias;
+}
+
+static void ds2760_battery_set_charged(struct power_supply *psy)
+{
+ struct ds2760_device_info *di = to_ds2760_device_info(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);
+}
+
static int ds2760_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -337,6 +412,12 @@ static int ds2760_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TEMP:
val->intval = di->temp_C;
break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ val->intval = di->life_sec;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = di->rem_capacity;
+ break;
default:
return -EINVAL;
}
@@ -353,6 +434,8 @@ static enum power_supply_property ds2760_battery_props[] = {
POWER_SUPPLY_PROP_CHARGE_EMPTY,
POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
};
static int ds2760_battery_probe(struct platform_device *pdev)
@@ -376,17 +459,12 @@ 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_charged = ds2760_battery_set_charged;
di->bat.external_power_changed =
ds2760_battery_external_power_changed;
di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
- retval = power_supply_register(&pdev->dev, &di->bat);
- if (retval) {
- dev_err(di->dev, "failed to register battery\n");
- goto batt_failed;
- }
-
/* enable sleep mode feature */
ds2760_battery_read_status(di);
status = di->raw[DS2760_STATUS_REG];
@@ -397,7 +475,24 @@ static int ds2760_battery_probe(struct platform_device *pdev)
ds2760_battery_write_status(di, status);
+ /* set rated capacity from module param */
+ if (rated_capacity)
+ ds2760_battery_write_rated_capacity(di, rated_capacity);
+
+ /* set current accumulator if given as parameter.
+ * this should only be done for bootstrapping the value */
+ if (current_accum)
+ ds2760_battery_set_current_accum(di, current_accum);
+
+ retval = power_supply_register(&pdev->dev, &di->bat);
+ if (retval) {
+ dev_err(di->dev, "failed to register battery\n");
+ goto batt_failed;
+ }
+
INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
+ INIT_DELAYED_WORK(&di->set_charged_work,
+ ds2760_battery_set_charged_work);
di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
if (!di->monitor_wqueue) {
retval = -ESRCH;
@@ -422,6 +517,8 @@ static int ds2760_battery_remove(struct platform_device *pdev)
cancel_rearming_delayed_workqueue(di->monitor_wqueue,
&di->monitor_work);
+ cancel_rearming_delayed_workqueue(di->monitor_wqueue,
+ &di->set_charged_work);
destroy_workqueue(di->monitor_wqueue);
power_supply_unregister(&di->bat);
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 58e419299cd6..8fefe5a73558 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -10,7 +10,9 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/types.h>
#include <linux/err.h>
+#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/jiffies.h>
@@ -231,6 +233,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
if (ret)
return ret;
break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ if (ec_byte & BAT_STAT_TRICKLE)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ else if (ec_byte & BAT_STAT_CHARGING)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ else
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
BAT_STAT_TRICKLE));
@@ -276,6 +286,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
return ret;
val->intval = ec_byte;
break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ if (ec_byte & BAT_STAT_FULL)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (ec_byte & BAT_STAT_LOW)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ break;
case POWER_SUPPLY_PROP_TEMP:
ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
if (ret)
@@ -315,12 +333,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
static enum power_supply_property olpc_bat_props[] = {
POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_AVG,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_AMBIENT,
POWER_SUPPLY_PROP_MANUFACTURER,
@@ -370,6 +390,29 @@ static struct bin_attribute olpc_bat_eeprom = {
.read = olpc_bat_eeprom_read,
};
+/* Allow userspace to see the specific error value pulled from the EC */
+
+static ssize_t olpc_bat_error_read(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ uint8_t ec_byte;
+ ssize_t ret;
+
+ ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", ec_byte);
+}
+
+static struct device_attribute olpc_bat_error = {
+ .attr = {
+ .name = "error",
+ .mode = S_IRUGO,
+ },
+ .show = olpc_bat_error_read,
+};
+
/*********************************************************************
* Initialisation
*********************************************************************/
@@ -433,8 +476,14 @@ static int __init olpc_bat_init(void)
if (ret)
goto eeprom_failed;
+ ret = device_create_file(olpc_bat.dev, &olpc_bat_error);
+ if (ret)
+ goto error_failed;
+
goto success;
+error_failed:
+ device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
eeprom_failed:
power_supply_unregister(&olpc_bat);
battery_failed:
@@ -447,6 +496,7 @@ success:
static void __exit olpc_bat_exit(void)
{
+ device_remove_file(olpc_bat.dev, &olpc_bat_error);
device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
power_supply_unregister(&olpc_bat);
power_supply_unregister(&olpc_ac);
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 5520040449c4..cce75b40b435 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -18,7 +18,9 @@
#include <linux/power_supply.h>
#include "power_supply.h"
+/* exported for the APM Power driver, APM emulation */
struct class *power_supply_class;
+EXPORT_SYMBOL_GPL(power_supply_class);
static int __power_supply_changed_work(struct device *dev, void *data)
{
@@ -55,6 +57,7 @@ void power_supply_changed(struct power_supply *psy)
schedule_work(&psy->changed_work);
}
+EXPORT_SYMBOL_GPL(power_supply_changed);
static int __power_supply_am_i_supplied(struct device *dev, void *data)
{
@@ -86,6 +89,7 @@ int power_supply_am_i_supplied(struct power_supply *psy)
return error;
}
+EXPORT_SYMBOL_GPL(power_supply_am_i_supplied);
static int __power_supply_is_system_supplied(struct device *dev, void *data)
{
@@ -110,6 +114,35 @@ int power_supply_is_system_supplied(void)
return error;
}
+EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
+
+int power_supply_set_battery_charged(struct power_supply *psy)
+{
+ if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) {
+ psy->set_charged(psy);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(power_supply_set_battery_charged);
+
+static int power_supply_match_device_by_name(struct device *dev, void *data)
+{
+ const char *name = data;
+ struct power_supply *psy = dev_get_drvdata(dev);
+
+ return strcmp(psy->name, name) == 0;
+}
+
+struct power_supply *power_supply_get_by_name(char *name)
+{
+ struct device *dev = class_find_device(power_supply_class, NULL, name,
+ power_supply_match_device_by_name);
+
+ return dev ? dev_get_drvdata(dev) : NULL;
+}
+EXPORT_SYMBOL_GPL(power_supply_get_by_name);
int power_supply_register(struct device *parent, struct power_supply *psy)
{
@@ -144,6 +177,7 @@ dev_create_failed:
success:
return rc;
}
+EXPORT_SYMBOL_GPL(power_supply_register);
void power_supply_unregister(struct power_supply *psy)
{
@@ -152,6 +186,7 @@ void power_supply_unregister(struct power_supply *psy)
power_supply_remove_attrs(psy);
device_unregister(psy->dev);
}
+EXPORT_SYMBOL_GPL(power_supply_unregister);
static int __init power_supply_class_init(void)
{
@@ -170,15 +205,6 @@ static void __exit power_supply_class_exit(void)
class_destroy(power_supply_class);
}
-EXPORT_SYMBOL_GPL(power_supply_changed);
-EXPORT_SYMBOL_GPL(power_supply_am_i_supplied);
-EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
-EXPORT_SYMBOL_GPL(power_supply_register);
-EXPORT_SYMBOL_GPL(power_supply_unregister);
-
-/* exported for the APM Power driver, APM emulation */
-EXPORT_SYMBOL_GPL(power_supply_class);
-
subsys_initcall(power_supply_class_init);
module_exit(power_supply_class_exit);
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index da73591017f9..08144393d64b 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -43,6 +43,9 @@ static ssize_t power_supply_show_property(struct device *dev,
static char *status_text[] = {
"Unknown", "Charging", "Discharging", "Not charging", "Full"
};
+ static char *charge_type[] = {
+ "Unknown", "N/A", "Trickle", "Fast"
+ };
static char *health_text[] = {
"Unknown", "Good", "Overheat", "Dead", "Over voltage",
"Unspecified failure", "Cold",
@@ -51,6 +54,9 @@ static ssize_t power_supply_show_property(struct device *dev,
"Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd",
"LiMn"
};
+ static char *capacity_level_text[] = {
+ "Unknown", "Critical", "Low", "Normal", "High", "Full"
+ };
ssize_t ret;
struct power_supply *psy = dev_get_drvdata(dev);
const ptrdiff_t off = attr - power_supply_attrs;
@@ -67,10 +73,14 @@ static ssize_t power_supply_show_property(struct device *dev,
if (off == POWER_SUPPLY_PROP_STATUS)
return sprintf(buf, "%s\n", status_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_CHARGE_TYPE)
+ return sprintf(buf, "%s\n", charge_type[value.intval]);
else if (off == POWER_SUPPLY_PROP_HEALTH)
return sprintf(buf, "%s\n", health_text[value.intval]);
else if (off == POWER_SUPPLY_PROP_TECHNOLOGY)
return sprintf(buf, "%s\n", technology_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_CAPACITY_LEVEL)
+ return sprintf(buf, "%s\n", capacity_level_text[value.intval]);
else if (off >= POWER_SUPPLY_PROP_MODEL_NAME)
return sprintf(buf, "%s\n", value.strval);
@@ -81,6 +91,7 @@ static ssize_t power_supply_show_property(struct device *dev,
static struct device_attribute power_supply_attrs[] = {
/* Properties of type `int' */
POWER_SUPPLY_ATTR(status),
+ POWER_SUPPLY_ATTR(charge_type),
POWER_SUPPLY_ATTR(health),
POWER_SUPPLY_ATTR(present),
POWER_SUPPLY_ATTR(online),
@@ -109,6 +120,7 @@ static struct device_attribute power_supply_attrs[] = {
POWER_SUPPLY_ATTR(energy_now),
POWER_SUPPLY_ATTR(energy_avg),
POWER_SUPPLY_ATTR(capacity),
+ POWER_SUPPLY_ATTR(capacity_level),
POWER_SUPPLY_ATTR(temp),
POWER_SUPPLY_ATTR(temp_ambient),
POWER_SUPPLY_ATTR(time_to_empty_now),
diff --git a/drivers/power/wm831x_power.c b/drivers/power/wm831x_power.c
new file mode 100644
index 000000000000..2a4c8b0b829c
--- /dev/null
+++ b/drivers/power/wm831x_power.c
@@ -0,0 +1,779 @@
+/*
+ * PMU driver for Wolfson Microelectronics wm831x PMICs
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/auxadc.h>
+#include <linux/mfd/wm831x/pmu.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+struct wm831x_power {
+ struct wm831x *wm831x;
+ struct power_supply wall;
+ struct power_supply backup;
+ struct power_supply usb;
+ struct power_supply battery;
+};
+
+static int wm831x_power_check_online(struct wm831x *wm831x, int supply,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & supply)
+ val->intval = 1;
+ else
+ val->intval = 0;
+
+ return 0;
+}
+
+static int wm831x_power_read_voltage(struct wm831x *wm831x,
+ enum wm831x_auxadc src,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = wm831x_auxadc_read_uv(wm831x, src);
+ if (ret >= 0)
+ val->intval = ret;
+
+ return ret;
+}
+
+/*********************************************************************
+ * WALL Power
+ *********************************************************************/
+static int wm831x_wall_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = wm831x_power_check_online(wm831x, WM831X_PWR_WALL, val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_WALL, val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_wall_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+/*********************************************************************
+ * USB Power
+ *********************************************************************/
+static int wm831x_usb_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = wm831x_power_check_online(wm831x, WM831X_PWR_USB, val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_USB, val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_usb_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+/*********************************************************************
+ * Battery properties
+ *********************************************************************/
+
+struct chg_map {
+ int val;
+ int reg_val;
+};
+
+static struct chg_map trickle_ilims[] = {
+ { 50, 0 << WM831X_CHG_TRKL_ILIM_SHIFT },
+ { 100, 1 << WM831X_CHG_TRKL_ILIM_SHIFT },
+ { 150, 2 << WM831X_CHG_TRKL_ILIM_SHIFT },
+ { 200, 3 << WM831X_CHG_TRKL_ILIM_SHIFT },
+};
+
+static struct chg_map vsels[] = {
+ { 4050, 0 << WM831X_CHG_VSEL_SHIFT },
+ { 4100, 1 << WM831X_CHG_VSEL_SHIFT },
+ { 4150, 2 << WM831X_CHG_VSEL_SHIFT },
+ { 4200, 3 << WM831X_CHG_VSEL_SHIFT },
+};
+
+static struct chg_map fast_ilims[] = {
+ { 0, 0 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 50, 1 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 100, 2 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 150, 3 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 200, 4 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 250, 5 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 300, 6 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 350, 7 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 400, 8 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 450, 9 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 500, 10 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 600, 11 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 700, 12 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 800, 13 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 900, 14 << WM831X_CHG_FAST_ILIM_SHIFT },
+ { 1000, 15 << WM831X_CHG_FAST_ILIM_SHIFT },
+};
+
+static struct chg_map eoc_iterms[] = {
+ { 20, 0 << WM831X_CHG_ITERM_SHIFT },
+ { 30, 1 << WM831X_CHG_ITERM_SHIFT },
+ { 40, 2 << WM831X_CHG_ITERM_SHIFT },
+ { 50, 3 << WM831X_CHG_ITERM_SHIFT },
+ { 60, 4 << WM831X_CHG_ITERM_SHIFT },
+ { 70, 5 << WM831X_CHG_ITERM_SHIFT },
+ { 80, 6 << WM831X_CHG_ITERM_SHIFT },
+ { 90, 7 << WM831X_CHG_ITERM_SHIFT },
+};
+
+static struct chg_map chg_times[] = {
+ { 60, 0 << WM831X_CHG_TIME_SHIFT },
+ { 90, 1 << WM831X_CHG_TIME_SHIFT },
+ { 120, 2 << WM831X_CHG_TIME_SHIFT },
+ { 150, 3 << WM831X_CHG_TIME_SHIFT },
+ { 180, 4 << WM831X_CHG_TIME_SHIFT },
+ { 210, 5 << WM831X_CHG_TIME_SHIFT },
+ { 240, 6 << WM831X_CHG_TIME_SHIFT },
+ { 270, 7 << WM831X_CHG_TIME_SHIFT },
+ { 300, 8 << WM831X_CHG_TIME_SHIFT },
+ { 330, 9 << WM831X_CHG_TIME_SHIFT },
+ { 360, 10 << WM831X_CHG_TIME_SHIFT },
+ { 390, 11 << WM831X_CHG_TIME_SHIFT },
+ { 420, 12 << WM831X_CHG_TIME_SHIFT },
+ { 450, 13 << WM831X_CHG_TIME_SHIFT },
+ { 480, 14 << WM831X_CHG_TIME_SHIFT },
+ { 510, 15 << WM831X_CHG_TIME_SHIFT },
+};
+
+static void wm831x_battey_apply_config(struct wm831x *wm831x,
+ struct chg_map *map, int count, int val,
+ int *reg, const char *name,
+ const char *units)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ if (val == map[i].val)
+ break;
+ if (i == count) {
+ dev_err(wm831x->dev, "Invalid %s %d%s\n",
+ name, val, units);
+ } else {
+ *reg |= map[i].reg_val;
+ dev_dbg(wm831x->dev, "Set %s of %d%s\n", name, val, units);
+ }
+}
+
+static void wm831x_config_battery(struct wm831x *wm831x)
+{
+ struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
+ struct wm831x_battery_pdata *pdata;
+ int ret, reg1, reg2;
+
+ if (!wm831x_pdata || !wm831x_pdata->battery) {
+ dev_warn(wm831x->dev,
+ "No battery charger configuration\n");
+ return;
+ }
+
+ pdata = wm831x_pdata->battery;
+
+ reg1 = 0;
+ reg2 = 0;
+
+ if (!pdata->enable) {
+ dev_info(wm831x->dev, "Battery charger disabled\n");
+ return;
+ }
+
+ reg1 |= WM831X_CHG_ENA;
+ if (pdata->off_mask)
+ reg2 |= WM831X_CHG_OFF_MSK;
+ if (pdata->fast_enable)
+ reg1 |= WM831X_CHG_FAST;
+
+ wm831x_battey_apply_config(wm831x, trickle_ilims,
+ ARRAY_SIZE(trickle_ilims),
+ pdata->trickle_ilim, &reg2,
+ "trickle charge current limit", "mA");
+
+ wm831x_battey_apply_config(wm831x, vsels, ARRAY_SIZE(vsels),
+ pdata->vsel, &reg2,
+ "target voltage", "mV");
+
+ wm831x_battey_apply_config(wm831x, fast_ilims, ARRAY_SIZE(fast_ilims),
+ pdata->fast_ilim, &reg2,
+ "fast charge current limit", "mA");
+
+ wm831x_battey_apply_config(wm831x, eoc_iterms, ARRAY_SIZE(eoc_iterms),
+ pdata->eoc_iterm, &reg1,
+ "end of charge current threshold", "mA");
+
+ wm831x_battey_apply_config(wm831x, chg_times, ARRAY_SIZE(chg_times),
+ pdata->timeout, &reg2,
+ "charger timeout", "min");
+
+ ret = wm831x_reg_unlock(wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret);
+ return;
+ }
+
+ ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1,
+ WM831X_CHG_ENA_MASK |
+ WM831X_CHG_FAST_MASK |
+ WM831X_CHG_ITERM_MASK |
+ WM831X_CHG_ITERM_MASK,
+ reg1);
+ if (ret != 0)
+ dev_err(wm831x->dev, "Failed to set charger control 1: %d\n",
+ ret);
+
+ ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_2,
+ WM831X_CHG_OFF_MSK |
+ WM831X_CHG_TIME_MASK |
+ WM831X_CHG_FAST_ILIM_MASK |
+ WM831X_CHG_TRKL_ILIM_MASK |
+ WM831X_CHG_VSEL_MASK,
+ reg2);
+ if (ret != 0)
+ dev_err(wm831x->dev, "Failed to set charger control 2: %d\n",
+ ret);
+
+ wm831x_reg_lock(wm831x);
+}
+
+static int wm831x_bat_check_status(struct wm831x *wm831x, int *status)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & WM831X_PWR_SRC_BATT) {
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+ return 0;
+ }
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS);
+ if (ret < 0)
+ return ret;
+
+ switch (ret & WM831X_CHG_STATE_MASK) {
+ case WM831X_CHG_STATE_OFF:
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case WM831X_CHG_STATE_TRICKLE:
+ case WM831X_CHG_STATE_FAST:
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+
+ default:
+ *status = POWER_SUPPLY_STATUS_UNKNOWN;
+ break;
+ }
+
+ return 0;
+}
+
+static int wm831x_bat_check_type(struct wm831x *wm831x, int *type)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS);
+ if (ret < 0)
+ return ret;
+
+ switch (ret & WM831X_CHG_STATE_MASK) {
+ case WM831X_CHG_STATE_TRICKLE:
+ case WM831X_CHG_STATE_TRICKLE_OT:
+ *type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case WM831X_CHG_STATE_FAST:
+ case WM831X_CHG_STATE_FAST_OT:
+ *type = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ default:
+ *type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ }
+
+ return 0;
+}
+
+static int wm831x_bat_check_health(struct wm831x *wm831x, int *health)
+{
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & WM831X_BATT_HOT_STS) {
+ *health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ return 0;
+ }
+
+ if (ret & WM831X_BATT_COLD_STS) {
+ *health = POWER_SUPPLY_HEALTH_COLD;
+ return 0;
+ }
+
+ if (ret & WM831X_BATT_OV_STS) {
+ *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ return 0;
+ }
+
+ switch (ret & WM831X_CHG_STATE_MASK) {
+ case WM831X_CHG_STATE_TRICKLE_OT:
+ case WM831X_CHG_STATE_FAST_OT:
+ *health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ break;
+ case WM831X_CHG_STATE_DEFECTIVE:
+ *health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ break;
+ default:
+ *health = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ }
+
+ return 0;
+}
+
+static int wm831x_bat_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = wm831x_bat_check_status(wm831x, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = wm831x_power_check_online(wm831x, WM831X_PWR_SRC_BATT,
+ val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BATT, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = wm831x_bat_check_health(wm831x, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ ret = wm831x_bat_check_type(wm831x, &val->intval);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+};
+
+static const char *wm831x_bat_irqs[] = {
+ "BATT HOT",
+ "BATT COLD",
+ "BATT FAIL",
+ "OV",
+ "END",
+ "TO",
+ "MODE",
+ "START",
+};
+
+static irqreturn_t wm831x_bat_irq(int irq, void *data)
+{
+ struct wm831x_power *wm831x_power = data;
+ struct wm831x *wm831x = wm831x_power->wm831x;
+
+ dev_dbg(wm831x->dev, "Battery status changed: %d\n", irq);
+
+ /* The battery charger is autonomous so we don't need to do
+ * anything except kick user space */
+ power_supply_changed(&wm831x_power->battery);
+
+ return IRQ_HANDLED;
+}
+
+
+/*********************************************************************
+ * Backup supply properties
+ *********************************************************************/
+
+static void wm831x_config_backup(struct wm831x *wm831x)
+{
+ struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
+ struct wm831x_backup_pdata *pdata;
+ int ret, reg;
+
+ if (!wm831x_pdata || !wm831x_pdata->backup) {
+ dev_warn(wm831x->dev,
+ "No backup battery charger configuration\n");
+ return;
+ }
+
+ pdata = wm831x_pdata->backup;
+
+ reg = 0;
+
+ if (pdata->charger_enable)
+ reg |= WM831X_BKUP_CHG_ENA | WM831X_BKUP_BATT_DET_ENA;
+ if (pdata->no_constant_voltage)
+ reg |= WM831X_BKUP_CHG_MODE;
+
+ switch (pdata->vlim) {
+ case 2500:
+ break;
+ case 3100:
+ reg |= WM831X_BKUP_CHG_VLIM;
+ break;
+ default:
+ dev_err(wm831x->dev, "Invalid backup voltage limit %dmV\n",
+ pdata->vlim);
+ }
+
+ switch (pdata->ilim) {
+ case 100:
+ break;
+ case 200:
+ reg |= 1;
+ break;
+ case 300:
+ reg |= 2;
+ break;
+ case 400:
+ reg |= 3;
+ break;
+ default:
+ dev_err(wm831x->dev, "Invalid backup current limit %duA\n",
+ pdata->ilim);
+ }
+
+ ret = wm831x_reg_unlock(wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret);
+ return;
+ }
+
+ ret = wm831x_set_bits(wm831x, WM831X_BACKUP_CHARGER_CONTROL,
+ WM831X_BKUP_CHG_ENA_MASK |
+ WM831X_BKUP_CHG_MODE_MASK |
+ WM831X_BKUP_BATT_DET_ENA_MASK |
+ WM831X_BKUP_CHG_VLIM_MASK |
+ WM831X_BKUP_CHG_ILIM_MASK,
+ reg);
+ if (ret != 0)
+ dev_err(wm831x->dev,
+ "Failed to set backup charger config: %d\n", ret);
+
+ wm831x_reg_lock(wm831x);
+}
+
+static int wm831x_backup_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int ret = 0;
+
+ ret = wm831x_reg_read(wm831x, WM831X_BACKUP_CHARGER_CONTROL);
+ if (ret < 0)
+ return ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (ret & WM831X_BKUP_CHG_STS)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BKUP_BATT,
+ val);
+ break;
+
+ case POWER_SUPPLY_PROP_PRESENT:
+ if (ret & WM831X_BKUP_CHG_STS)
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property wm831x_backup_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_PRESENT,
+};
+
+/*********************************************************************
+ * Initialisation
+ *********************************************************************/
+
+static irqreturn_t wm831x_syslo_irq(int irq, void *data)
+{
+ struct wm831x_power *wm831x_power = data;
+ struct wm831x *wm831x = wm831x_power->wm831x;
+
+ /* Not much we can actually *do* but tell people for
+ * posterity, we're probably about to run out of power. */
+ dev_crit(wm831x->dev, "SYSVDD under voltage\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wm831x_pwr_src_irq(int irq, void *data)
+{
+ struct wm831x_power *wm831x_power = data;
+ struct wm831x *wm831x = wm831x_power->wm831x;
+
+ dev_dbg(wm831x->dev, "Power source changed\n");
+
+ /* Just notify for everything - little harm in overnotifying.
+ * The backup battery is not a power source while the system
+ * is running so skip that.
+ */
+ power_supply_changed(&wm831x_power->battery);
+ power_supply_changed(&wm831x_power->usb);
+ power_supply_changed(&wm831x_power->wall);
+
+ return IRQ_HANDLED;
+}
+
+static __devinit int wm831x_power_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_power *power;
+ struct power_supply *usb;
+ struct power_supply *battery;
+ struct power_supply *wall;
+ struct power_supply *backup;
+ int ret, irq, i;
+
+ power = kzalloc(sizeof(struct wm831x_power), GFP_KERNEL);
+ if (power == NULL)
+ return -ENOMEM;
+
+ power->wm831x = wm831x;
+ platform_set_drvdata(pdev, power);
+
+ usb = &power->usb;
+ battery = &power->battery;
+ wall = &power->wall;
+ backup = &power->backup;
+
+ /* We ignore configuration failures since we can still read back
+ * the status without enabling either of the chargers.
+ */
+ wm831x_config_battery(wm831x);
+ wm831x_config_backup(wm831x);
+
+ wall->name = "wm831x-wall";
+ wall->type = POWER_SUPPLY_TYPE_MAINS;
+ wall->properties = wm831x_wall_props;
+ wall->num_properties = ARRAY_SIZE(wm831x_wall_props);
+ wall->get_property = wm831x_wall_get_prop;
+ ret = power_supply_register(&pdev->dev, wall);
+ if (ret)
+ goto err_kmalloc;
+
+ battery->name = "wm831x-battery";
+ battery->properties = wm831x_bat_props;
+ battery->num_properties = ARRAY_SIZE(wm831x_bat_props);
+ battery->get_property = wm831x_bat_get_prop;
+ battery->use_for_apm = 1;
+ ret = power_supply_register(&pdev->dev, battery);
+ if (ret)
+ goto err_wall;
+
+ usb->name = "wm831x-usb",
+ usb->type = POWER_SUPPLY_TYPE_USB;
+ usb->properties = wm831x_usb_props;
+ usb->num_properties = ARRAY_SIZE(wm831x_usb_props);
+ usb->get_property = wm831x_usb_get_prop;
+ ret = power_supply_register(&pdev->dev, usb);
+ if (ret)
+ goto err_battery;
+
+ backup->name = "wm831x-backup";
+ backup->type = POWER_SUPPLY_TYPE_BATTERY;
+ backup->properties = wm831x_backup_props;
+ backup->num_properties = ARRAY_SIZE(wm831x_backup_props);
+ backup->get_property = wm831x_backup_get_prop;
+ ret = power_supply_register(&pdev->dev, backup);
+ if (ret)
+ goto err_usb;
+
+ irq = platform_get_irq_byname(pdev, "SYSLO");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_syslo_irq,
+ IRQF_TRIGGER_RISING, "SYSLO",
+ power);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n",
+ irq, ret);
+ goto err_backup;
+ }
+
+ irq = platform_get_irq_byname(pdev, "PWR SRC");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_pwr_src_irq,
+ IRQF_TRIGGER_RISING, "Power source",
+ power);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request PWR SRC IRQ %d: %d\n",
+ irq, ret);
+ goto err_syslo;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]);
+ ret = wm831x_request_irq(wm831x, irq, wm831x_bat_irq,
+ IRQF_TRIGGER_RISING,
+ wm831x_bat_irqs[i],
+ power);
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "Failed to request %s IRQ %d: %d\n",
+ wm831x_bat_irqs[i], irq, ret);
+ goto err_bat_irq;
+ }
+ }
+
+ return ret;
+
+err_bat_irq:
+ for (; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]);
+ wm831x_free_irq(wm831x, irq, power);
+ }
+ irq = platform_get_irq_byname(pdev, "PWR SRC");
+ wm831x_free_irq(wm831x, irq, power);
+err_syslo:
+ irq = platform_get_irq_byname(pdev, "SYSLO");
+ wm831x_free_irq(wm831x, irq, power);
+err_backup:
+ power_supply_unregister(backup);
+err_usb:
+ power_supply_unregister(usb);
+err_battery:
+ power_supply_unregister(battery);
+err_wall:
+ power_supply_unregister(wall);
+err_kmalloc:
+ kfree(power);
+ return ret;
+}
+
+static __devexit int wm831x_power_remove(struct platform_device *pdev)
+{
+ struct wm831x_power *wm831x_power = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = wm831x_power->wm831x;
+ int irq, i;
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]);
+ wm831x_free_irq(wm831x, irq, wm831x_power);
+ }
+
+ irq = platform_get_irq_byname(pdev, "PWR SRC");
+ wm831x_free_irq(wm831x, irq, wm831x_power);
+
+ irq = platform_get_irq_byname(pdev, "SYSLO");
+ wm831x_free_irq(wm831x, irq, wm831x_power);
+
+ power_supply_unregister(&wm831x_power->backup);
+ power_supply_unregister(&wm831x_power->battery);
+ power_supply_unregister(&wm831x_power->wall);
+ power_supply_unregister(&wm831x_power->usb);
+ return 0;
+}
+
+static struct platform_driver wm831x_power_driver = {
+ .probe = wm831x_power_probe,
+ .remove = __devexit_p(wm831x_power_remove),
+ .driver = {
+ .name = "wm831x-power",
+ },
+};
+
+static int __init wm831x_power_init(void)
+{
+ return platform_driver_register(&wm831x_power_driver);
+}
+module_init(wm831x_power_init);
+
+static void __exit wm831x_power_exit(void)
+{
+ platform_driver_unregister(&wm831x_power_driver);
+}
+module_exit(wm831x_power_exit);
+
+MODULE_DESCRIPTION("Power supply driver for WM831x PMICs");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-power");
diff --git a/drivers/power/wm8350_power.c b/drivers/power/wm8350_power.c
index 1b16bf343f2f..28b0299c0043 100644
--- a/drivers/power/wm8350_power.c
+++ b/drivers/power/wm8350_power.c
@@ -321,6 +321,24 @@ static int wm8350_bat_check_health(struct wm8350 *wm8350)
return POWER_SUPPLY_HEALTH_GOOD;
}
+static int wm8350_bat_get_charge_type(struct wm8350 *wm8350)
+{
+ int state;
+
+ state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2) &
+ WM8350_CHG_STS_MASK;
+ switch (state) {
+ case WM8350_CHG_STS_OFF:
+ return POWER_SUPPLY_CHARGE_TYPE_NONE;
+ case WM8350_CHG_STS_TRICKLE:
+ return POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ case WM8350_CHG_STS_FAST:
+ return POWER_SUPPLY_CHARGE_TYPE_FAST;
+ default:
+ return POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ }
+}
+
static int wm8350_bat_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -342,6 +360,9 @@ static int wm8350_bat_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_HEALTH:
val->intval = wm8350_bat_check_health(wm8350);
break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ val->intval = wm8350_bat_get_charge_type(wm8350);
+ break;
default:
ret = -EINVAL;
break;
@@ -355,6 +376,7 @@ static enum power_supply_property wm8350_bat_props[] = {
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
};
/*********************************************************************
diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c
index b787335a8419..f2bfd296dbae 100644
--- a/drivers/power/wm97xx_battery.c
+++ b/drivers/power/wm97xx_battery.c
@@ -22,17 +22,20 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
-#include <linux/wm97xx_batt.h>
+#include <linux/irq.h>
static DEFINE_MUTEX(bat_lock);
static struct work_struct bat_work;
struct mutex work_lock;
static int bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
-static struct wm97xx_batt_info *pdata;
+static struct wm97xx_batt_info *gpdata;
static enum power_supply_property *prop;
static unsigned long wm97xx_read_bat(struct power_supply *bat_ps)
{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
pdata->batt_aux) * pdata->batt_mult /
pdata->batt_div;
@@ -40,6 +43,9 @@ static unsigned long wm97xx_read_bat(struct power_supply *bat_ps)
static unsigned long wm97xx_read_temp(struct power_supply *bat_ps)
{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
pdata->temp_aux) * pdata->temp_mult /
pdata->temp_div;
@@ -49,6 +55,9 @@ static int wm97xx_bat_get_property(struct power_supply *bat_ps,
enum power_supply_property psp,
union power_supply_propval *val)
{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = bat_status;
@@ -97,6 +106,8 @@ static void wm97xx_bat_external_power_changed(struct power_supply *bat_ps)
static void wm97xx_bat_update(struct power_supply *bat_ps)
{
int old_status = bat_status;
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
mutex_lock(&work_lock);
@@ -127,21 +138,29 @@ static void wm97xx_bat_work(struct work_struct *work)
wm97xx_bat_update(&bat_ps);
}
+static irqreturn_t wm97xx_chrg_irq(int irq, void *data)
+{
+ schedule_work(&bat_work);
+ return IRQ_HANDLED;
+}
+
#ifdef CONFIG_PM
-static int wm97xx_bat_suspend(struct platform_device *dev, pm_message_t state)
+static int wm97xx_bat_suspend(struct device *dev)
{
flush_scheduled_work();
return 0;
}
-static int wm97xx_bat_resume(struct platform_device *dev)
+static int wm97xx_bat_resume(struct device *dev)
{
schedule_work(&bat_work);
return 0;
}
-#else
-#define wm97xx_bat_suspend NULL
-#define wm97xx_bat_resume NULL
+
+static struct dev_pm_ops wm97xx_bat_pm_ops = {
+ .suspend = wm97xx_bat_suspend,
+ .resume = wm97xx_bat_resume,
+};
#endif
static int __devinit wm97xx_bat_probe(struct platform_device *dev)
@@ -149,6 +168,15 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
int ret = 0;
int props = 1; /* POWER_SUPPLY_PROP_PRESENT */
int i = 0;
+ struct wm97xx_pdata *wmdata = dev->dev.platform_data;
+ struct wm97xx_batt_pdata *pdata;
+
+ if (gpdata) {
+ dev_err(&dev->dev, "Do not pass platform_data through "
+ "wm97xx_bat_set_pdata!\n");
+ return -EINVAL;
+ } else
+ pdata = wmdata->batt_pdata;
if (dev->id != -1)
return -EINVAL;
@@ -156,17 +184,22 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
mutex_init(&work_lock);
if (!pdata) {
- dev_err(&dev->dev, "Please use wm97xx_bat_set_pdata\n");
+ dev_err(&dev->dev, "No platform_data supplied\n");
return -EINVAL;
}
- if (pdata->charge_gpio >= 0 && gpio_is_valid(pdata->charge_gpio)) {
+ if (gpio_is_valid(pdata->charge_gpio)) {
ret = gpio_request(pdata->charge_gpio, "BATT CHRG");
if (ret)
goto err;
ret = gpio_direction_input(pdata->charge_gpio);
if (ret)
goto err2;
+ ret = request_irq(gpio_to_irq(pdata->charge_gpio),
+ wm97xx_chrg_irq, IRQF_DISABLED,
+ "AC Detect", 0);
+ if (ret)
+ goto err2;
props++; /* POWER_SUPPLY_PROP_STATUS */
}
@@ -183,7 +216,7 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
prop = kzalloc(props * sizeof(*prop), GFP_KERNEL);
if (!prop)
- goto err2;
+ goto err3;
prop[i++] = POWER_SUPPLY_PROP_PRESENT;
if (pdata->charge_gpio >= 0)
@@ -216,21 +249,30 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
if (!ret)
schedule_work(&bat_work);
else
- goto err3;
+ goto err4;
return 0;
-err3:
+err4:
kfree(prop);
+err3:
+ if (gpio_is_valid(pdata->charge_gpio))
+ free_irq(gpio_to_irq(pdata->charge_gpio), dev);
err2:
- gpio_free(pdata->charge_gpio);
+ if (gpio_is_valid(pdata->charge_gpio))
+ gpio_free(pdata->charge_gpio);
err:
return ret;
}
static int __devexit wm97xx_bat_remove(struct platform_device *dev)
{
- if (pdata && pdata->charge_gpio && pdata->charge_gpio >= 0)
+ struct wm97xx_pdata *wmdata = dev->dev.platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ if (pdata && gpio_is_valid(pdata->charge_gpio)) {
+ free_irq(gpio_to_irq(pdata->charge_gpio), dev);
gpio_free(pdata->charge_gpio);
+ }
flush_scheduled_work();
power_supply_unregister(&bat_ps);
kfree(prop);
@@ -241,11 +283,12 @@ static struct platform_driver wm97xx_bat_driver = {
.driver = {
.name = "wm97xx-battery",
.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &wm97xx_bat_pm_ops,
+#endif
},
.probe = wm97xx_bat_probe,
.remove = __devexit_p(wm97xx_bat_remove),
- .suspend = wm97xx_bat_suspend,
- .resume = wm97xx_bat_resume,
};
static int __init wm97xx_bat_init(void)
@@ -258,9 +301,9 @@ static void __exit wm97xx_bat_exit(void)
platform_driver_unregister(&wm97xx_bat_driver);
}
-void __init wm97xx_bat_set_pdata(struct wm97xx_batt_info *data)
+void wm97xx_bat_set_pdata(struct wm97xx_batt_info *data)
{
- pdata = data;
+ gpdata = data;
}
EXPORT_SYMBOL_GPL(wm97xx_bat_set_pdata);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 10:21:28 +0000