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-rw-r--r--Documentation/devicetree/bindings/power_supply/charger-manager.txt81
-rw-r--r--drivers/power/charger-manager.c138
-rw-r--r--include/linux/power/charger-manager.h12
3 files changed, 222 insertions, 9 deletions
diff --git a/Documentation/devicetree/bindings/power_supply/charger-manager.txt b/Documentation/devicetree/bindings/power_supply/charger-manager.txt
new file mode 100644
index 0000000..2b33750
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/charger-manager.txt
@@ -0,0 +1,81 @@
+charger-manager bindings
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Required properties :
+ - compatible : "charger-manager"
+ - <>-supply : for regulator consumer
+ - cm-num-chargers : number of chargers
+ - cm-chargers : name of chargers
+ - cm-fuel-gauge : name of battery fuel gauge
+ - subnode <regulator> :
+ - cm-regulator-name : name of charger regulator
+ - subnode <cable> :
+ - cm-cable-name : name of charger cable
+ - cm-cable-extcon : name of extcon dev
+(optional) - cm-cable-min : minimum current of cable
+(optional) - cm-cable-max : maximum current of cable
+
+Optional properties :
+ - cm-name : charger manager's name (default : "battery")
+ - cm-poll-mode : polling mode (enum polling_modes)
+ - cm-poll-interval : polling interval
+ - cm-battery-stat : battery status (enum data_source)
+ - cm-fullbatt-* : data for full battery checking
+ - cm-thermal-zone : name of external thermometer's thermal zone
+ - cm-battery-* : threshold battery temperature for charging
+ -cold : critical cold temperature of battery for charging
+ -cold-in-minus : flag that cold temerature is in minus degree
+ -hot : critical hot temperature of battery for charging
+ -temp-diff : temperature difference to allow recharging
+ - cm-dis/charging-max = limits of charging duration
+
+Example :
+ charger-manager@0 {
+ compatible = "charger-manager";
+ chg-reg-supply = <&charger_regulator>;
+
+ cm-name = "battery";
+ /* Always polling ON : 30s */
+ cm-poll-mode = <1>;
+ cm-poll-interval = <30000>;
+
+ cm-fullbatt-vchkdrop-ms = <30000>;
+ cm-fullbatt-vchkdrop-volt = <150000>;
+ cm-fullbatt-soc = <100>;
+
+ cm-battery-stat = <3>;
+
+ cm-num-chargers = <3>;
+ cm-chargers = "charger0", "charger1", "charger2";
+
+ cm-fuel-gauge = "fuelgauge0";
+
+ cm-thermal-zone = "thermal_zone.1"
+ /* in deci centigrade */
+ cm-battery-cold = <50>;
+ cm-battery-cold-in-minus;
+ cm-battery-hot = <800>;
+ cm-battery-temp-diff = <100>;
+
+ /* Allow charging for 5hr */
+ cm-charging-max = <18000000>;
+ /* Allow discharging for 2hr */
+ cm-discharging-max = <7200000>;
+
+ regulator@0 {
+ cm-regulator-name = "chg-reg";
+ cable@0 {
+ cm-cable-name = "USB";
+ cm-cable-extcon = "extcon-dev.0";
+ cm-cable-min = <475000>;
+ cm-cable-max = <500000>;
+ };
+ cable@1 {
+ cm-cable-name = "TA";
+ cm-cable-extcon = "extcon-dev.0";
+ cm-cable-min = <650000>;
+ cm-cable-max = <675000>;
+ };
+ };
+
+ };
diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index 6b68d15..ec5c140 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -25,6 +25,7 @@
#include <linux/power/charger-manager.h>
#include <linux/regulator/consumer.h>
#include <linux/sysfs.h>
+#include <linux/of.h>
#include <linux/thermal.h>
/*
@@ -528,7 +529,7 @@ static int check_charging_duration(struct charger_manager *cm)
duration = curr - cm->charging_start_time;
if (duration > desc->charging_max_duration_ms) {
- dev_info(cm->dev, "Charging duration exceed %lldms\n",
+ dev_info(cm->dev, "Charging duration exceed %ums\n",
desc->charging_max_duration_ms);
uevent_notify(cm, "Discharging");
try_charger_enable(cm, false);
@@ -539,7 +540,7 @@ static int check_charging_duration(struct charger_manager *cm)
if (duration > desc->charging_max_duration_ms &&
is_ext_pwr_online(cm)) {
- dev_info(cm->dev, "Discharging duration exceed %lldms\n",
+ dev_info(cm->dev, "Discharging duration exceed %ums\n",
desc->discharging_max_duration_ms);
uevent_notify(cm, "Recharging");
try_charger_enable(cm, true);
@@ -1528,9 +1529,139 @@ static int cm_init_thermal_data(struct charger_manager *cm)
return ret;
}
+static struct of_device_id charger_manager_match[] = {
+ {
+ .compatible = "charger-manager",
+ },
+ {},
+};
+
+struct charger_desc *of_cm_parse_desc(struct device *dev)
+{
+ struct charger_desc *desc;
+ struct device_node *np = dev->of_node;
+ u32 poll_mode = CM_POLL_DISABLE;
+ u32 battery_stat = CM_NO_BATTERY;
+ int num_chgs = 0;
+
+ desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
+ if (!desc)
+ return ERR_PTR(-ENOMEM);
+
+ of_property_read_string(np, "cm-name", &desc->psy_name);
+
+ of_property_read_u32(np, "cm-poll-mode", &poll_mode);
+ desc->polling_mode = poll_mode;
+
+ of_property_read_u32(np, "cm-poll-interval",
+ &desc->polling_interval_ms);
+
+ of_property_read_u32(np, "cm-fullbatt-vchkdrop-ms",
+ &desc->fullbatt_vchkdrop_ms);
+ of_property_read_u32(np, "cm-fullbatt-vchkdrop-volt",
+ &desc->fullbatt_vchkdrop_uV);
+ of_property_read_u32(np, "cm-fullbatt-voltage", &desc->fullbatt_uV);
+ of_property_read_u32(np, "cm-fullbatt-soc", &desc->fullbatt_soc);
+ of_property_read_u32(np, "cm-fullbatt-capacity",
+ &desc->fullbatt_full_capacity);
+
+ of_property_read_u32(np, "cm-battery-stat", &battery_stat);
+ desc->battery_present = battery_stat;
+
+ /* chargers */
+ of_property_read_u32(np, "cm-num-chargers", &num_chgs);
+ if (num_chgs) {
+ /* Allocate empty bin at the tail of array */
+ desc->psy_charger_stat = devm_kzalloc(dev, sizeof(char *)
+ * (num_chgs + 1), GFP_KERNEL);
+ if (desc->psy_charger_stat) {
+ int i;
+ for (i = 0; i < num_chgs; i++)
+ of_property_read_string_index(np, "cm-chargers",
+ i, &desc->psy_charger_stat[i]);
+ } else {
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
+ of_property_read_string(np, "cm-fuel-gauge", &desc->psy_fuel_gauge);
+
+ of_property_read_string(np, "cm-thermal-zone", &desc->thermal_zone);
+
+ of_property_read_u32(np, "cm-battery-cold", &desc->temp_min);
+ if (of_get_property(np, "cm-battery-cold-in-minus", NULL))
+ desc->temp_min *= -1;
+ of_property_read_u32(np, "cm-battery-hot", &desc->temp_max);
+ of_property_read_u32(np, "cm-battery-temp-diff", &desc->temp_diff);
+
+ of_property_read_u32(np, "cm-charging-max",
+ &desc->charging_max_duration_ms);
+ of_property_read_u32(np, "cm-discharging-max",
+ &desc->discharging_max_duration_ms);
+
+ /* battery charger regualtors */
+ desc->num_charger_regulators = of_get_child_count(np);
+ if (desc->num_charger_regulators) {
+ struct charger_regulator *chg_regs;
+ struct device_node *child;
+
+ chg_regs = devm_kzalloc(dev, sizeof(*chg_regs)
+ * desc->num_charger_regulators,
+ GFP_KERNEL);
+ if (!chg_regs)
+ return ERR_PTR(-ENOMEM);
+
+ desc->charger_regulators = chg_regs;
+
+ for_each_child_of_node(np, child) {
+ struct charger_cable *cables;
+ struct device_node *_child;
+
+ of_property_read_string(child, "cm-regulator-name",
+ &chg_regs->regulator_name);
+
+ /* charger cables */
+ chg_regs->num_cables = of_get_child_count(child);
+ if (chg_regs->num_cables) {
+ cables = devm_kzalloc(dev, sizeof(*cables)
+ * chg_regs->num_cables,
+ GFP_KERNEL);
+ if (!cables)
+ return ERR_PTR(-ENOMEM);
+
+ chg_regs->cables = cables;
+
+ for_each_child_of_node(child, _child) {
+ of_property_read_string(_child,
+ "cm-cable-name", &cables->name);
+ of_property_read_string(_child,
+ "cm-cable-extcon",
+ &cables->extcon_name);
+ of_property_read_u32(_child,
+ "cm-cable-min",
+ &cables->min_uA);
+ of_property_read_u32(_child,
+ "cm-cable-max",
+ &cables->max_uA);
+ cables++;
+ }
+ }
+ chg_regs++;
+ }
+ }
+ return desc;
+}
+
+static inline struct charger_desc *cm_get_drv_data(struct platform_device *pdev)
+{
+ if (pdev->dev.of_node)
+ return of_cm_parse_desc(&pdev->dev);
+ return (struct charger_desc *)dev_get_platdata(&pdev->dev);
+}
+
static int charger_manager_probe(struct platform_device *pdev)
{
- struct charger_desc *desc = dev_get_platdata(&pdev->dev);
+ struct charger_desc *desc = cm_get_drv_data(pdev);
struct charger_manager *cm;
int ret = 0, i = 0;
int j = 0;
@@ -1887,6 +2018,7 @@ static struct platform_driver charger_manager_driver = {
.name = "charger-manager",
.owner = THIS_MODULE,
.pm = &charger_manager_pm,
+ .of_match_table = charger_manager_match,
},
.probe = charger_manager_probe,
.remove = charger_manager_remove,
diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h
index 9aec029..07e7945 100644
--- a/include/linux/power/charger-manager.h
+++ b/include/linux/power/charger-manager.h
@@ -191,7 +191,7 @@ struct charger_regulator {
* max_duration_ms', cm start charging.
*/
struct charger_desc {
- char *psy_name;
+ const char *psy_name;
enum polling_modes polling_mode;
unsigned int polling_interval_ms;
@@ -204,14 +204,14 @@ struct charger_desc {
enum data_source battery_present;
- char **psy_charger_stat;
+ const char **psy_charger_stat;
int num_charger_regulators;
struct charger_regulator *charger_regulators;
- char *psy_fuel_gauge;
+ const char *psy_fuel_gauge;
- char *thermal_zone;
+ const char *thermal_zone;
int temp_min;
int temp_max;
@@ -219,8 +219,8 @@ struct charger_desc {
bool measure_battery_temp;
- u64 charging_max_duration_ms;
- u64 discharging_max_duration_ms;
+ u32 charging_max_duration_ms;
+ u32 discharging_max_duration_ms;
};
#define PSY_NAME_MAX 30
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