test_power: Add support for USB AC source

Usually a device has both AC plug and UDC plug usable for charging.
Provide both AC sources.

Signed-off-by: Dmitry Eremin-Solenikov <dmitry_eremin@mentor.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

diff --git a/drivers/power/test_power.c b/drivers/power/test_power.c
index b527c93bf2f3fbb11869333aa0cb36cad22ffea5..99aec3b38b232a55bdf0c1d433f04c15c5554445 100644 (file)
--- a/drivers/power/test_power.c
+++ b/drivers/power/test_power.c
@@ -22,6 +22,7 @@
 #include <linux/vermagic.h>
 
 static int ac_online                   = 1;
+static int usb_online                  = 1;
 static int battery_status              = POWER_SUPPLY_STATUS_DISCHARGING;
 static int battery_health              = POWER_SUPPLY_HEALTH_GOOD;
 static int battery_present             = 1; /* true */
@@ -42,6 +43,20 @@ static int test_power_get_ac_property(struct power_supply *psy,
        return 0;
 }
 
+static int test_power_get_usb_property(struct power_supply *psy,
+                                     enum power_supply_property psp,
+                                     union power_supply_propval *val)
+{
+       switch (psp) {
+       case POWER_SUPPLY_PROP_ONLINE:
+               val->intval = usb_online;
+               break;
+       default:
+               return -EINVAL;
+       }
+       return 0;
+}
+
 static int test_power_get_battery_property(struct power_supply *psy,
                                           enum power_supply_property psp,
                                           union power_supply_propval *val)
@@ -135,6 +150,14 @@ static struct power_supply test_power_supplies[] = {
                .properties = test_power_battery_props,
                .num_properties = ARRAY_SIZE(test_power_battery_props),
                .get_property = test_power_get_battery_property,
+       }, {
+               .name = "test_usb",
+               .type = POWER_SUPPLY_TYPE_USB,
+               .supplied_to = test_power_ac_supplied_to,
+               .num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
+               .properties = test_power_ac_props,
+               .num_properties = ARRAY_SIZE(test_power_ac_props),
+               .get_property = test_power_get_usb_property,
        },
 };
 
@@ -167,6 +190,7 @@ static void __exit test_power_exit(void)
 
        /* Let's see how we handle changes... */
        ac_online = 0;
+       usb_online = 0;
        battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
        for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
                power_supply_changed(&test_power_supplies[i]);
@@ -275,6 +299,19 @@ static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
        return strlen(buffer);
 }
 
+static int param_set_usb_online(const char *key, const struct kernel_param *kp)
+{
+       usb_online = map_get_value(map_ac_online, key, usb_online);
+       power_supply_changed(&test_power_supplies[2]);
+       return 0;
+}
+
+static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
+{
+       strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
+       return strlen(buffer);
+}
+
 static int param_set_battery_status(const char *key,
                                        const struct kernel_param *kp)
 {
@@ -350,13 +387,16 @@ static int param_set_battery_capacity(const char *key,
 
 #define param_get_battery_capacity param_get_int
 
-
-
 static struct kernel_param_ops param_ops_ac_online = {
        .set = param_set_ac_online,
        .get = param_get_ac_online,
 };
 
+static struct kernel_param_ops param_ops_usb_online = {
+       .set = param_set_usb_online,
+       .get = param_get_usb_online,
+};
+
 static struct kernel_param_ops param_ops_battery_status = {
        .set = param_set_battery_status,
        .get = param_get_battery_status,
@@ -384,6 +424,7 @@ static struct kernel_param_ops param_ops_battery_capacity = {
 
 
 #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);
 #define param_check_battery_present(name, p) __param_check(name, p, void);
 #define param_check_battery_technology(name, p) __param_check(name, p, void);
@@ -394,6 +435,9 @@ static struct kernel_param_ops param_ops_battery_capacity = {
 module_param(ac_online, ac_online, 0644);
 MODULE_PARM_DESC(ac_online, "AC charging state <on|off>");
 
+module_param(usb_online, usb_online, 0644);
+MODULE_PARM_DESC(usb_online, "USB charging state <on|off>");
+
 module_param(battery_status, battery_status, 0644);
 MODULE_PARM_DESC(battery_status,
        "battery status <charging|discharging|not-charging|full>");