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Subject[PATCH] test_power: Add CURRENT and CHARGE_COUNTER properties
Date
From: "Lecopzer Chen" <lecopzer.chen@mediatek.com>

Emulate battery current (variable) and battery CHARGE_COUNTER
(same as battery_capacity) properties.

Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
Cc: YJ Chiang <yj.chiang@mediatek.com>

---
drivers/power/supply/test_power.c | 33 +++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)

diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
index 57246cdbd042..9f85060c84de 100644
--- a/drivers/power/supply/test_power.c
+++ b/drivers/power/supply/test_power.c
@@ -36,6 +36,7 @@ static int battery_present = 1; /* true */
static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION;
static int battery_capacity = 50;
static int battery_voltage = 3300;
+static int battery_current = 1600;

static bool module_initialized;

@@ -101,6 +102,7 @@ static int test_power_get_battery_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CAPACITY:
case POWER_SUPPLY_PROP_CHARGE_NOW:
+ case POWER_SUPPLY_PROP_CHARGE_COUNTER:
val->intval = battery_capacity;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
@@ -117,6 +119,10 @@ static int test_power_get_battery_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = battery_voltage;
break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = battery_current;
+ break;
default:
pr_info("%s: some properties deliberately report errors.\n",
__func__);
@@ -138,6 +144,7 @@ static enum power_supply_property test_power_battery_props[] = {
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
@@ -147,6 +154,8 @@ static enum power_supply_property test_power_battery_props[] = {
POWER_SUPPLY_PROP_SERIAL_NUMBER,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
};

static char *test_power_ac_supplied_to[] = {
@@ -450,6 +459,21 @@ static int param_set_battery_voltage(const char *key,

#define param_get_battery_voltage param_get_int

+static int param_set_battery_current(const char *key,
+ const struct kernel_param *kp)
+{
+ int tmp;
+
+ if (1 != sscanf(key, "%d", &tmp))
+ return -EINVAL;
+
+ battery_current = tmp;
+ signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
+ return 0;
+}
+
+#define param_get_battery_current param_get_int
+
static const struct kernel_param_ops param_ops_ac_online = {
.set = param_set_ac_online,
.get = param_get_ac_online,
@@ -490,6 +514,11 @@ static const struct kernel_param_ops param_ops_battery_voltage = {
.get = param_get_battery_voltage,
};

+static const struct kernel_param_ops param_ops_battery_current = {
+ .set = param_set_battery_current,
+ .get = param_get_battery_current,
+};
+
#define param_check_ac_online(name, p) __param_check(name, p, void);
#define param_check_usb_online(name, p) __param_check(name, p, void);
#define param_check_battery_status(name, p) __param_check(name, p, void);
@@ -498,6 +527,7 @@ static const struct kernel_param_ops param_ops_battery_voltage = {
#define param_check_battery_health(name, p) __param_check(name, p, void);
#define param_check_battery_capacity(name, p) __param_check(name, p, void);
#define param_check_battery_voltage(name, p) __param_check(name, p, void);
+#define param_check_battery_current(name, p) __param_check(name, p, void);


module_param(ac_online, ac_online, 0644);
@@ -528,6 +558,9 @@ MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
module_param(battery_voltage, battery_voltage, 0644);
MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");

+module_param(battery_current, battery_current, 0644);
+MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
+
MODULE_DESCRIPTION("Power supply driver for testing");
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
MODULE_LICENSE("GPL");
--
2.18.0
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