bq27x00_battery: Add support for property POWER_SUPPLY_PROP_CAPACITY_LEVEL

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 39 insertions, 1 deletions

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index d238144d1e8..a5311225b96 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -54,12 +54,16 @@
 
 #define BQ27000_REG_RSOC                0x0B /* Relative State-of-Charge */
 #define BQ27000_REG_ILMD                0x76 /* Initial last measured discharge */
-#define BQ27000_FLAG_CHGS               BIT(7)
+#define BQ27000_FLAG_EDVF               BIT(0) /* Final End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_EDV1               BIT(1) /* First End-of-Discharge-Voltage flag */
 #define BQ27000_FLAG_FC                 BIT(5)
+#define BQ27000_FLAG_CHGS               BIT(7) /* Charge state flag */
 
 #define BQ27500_REG_SOC                 0x2C
 #define BQ27500_REG_DCAP                0x3C /* Design capacity */
 #define BQ27500_FLAG_DSC                BIT(0)
+#define BQ27500_FLAG_SOCF               BIT(1) /* State-of-Charge threshold final */
+#define BQ27500_FLAG_SOC1               BIT(2) /* State-of-Charge threshold 1 */
 #define BQ27500_FLAG_FC                 BIT(9)
 
 #define BQ27000_RS                      20 /* Resistor sense */
@@ -106,6 +110,7 @@ static enum power_supply_property bq27x00_battery_props[] = {
         POWER_SUPPLY_PROP_VOLTAGE_NOW,
         POWER_SUPPLY_PROP_CURRENT_NOW,
         POWER_SUPPLY_PROP_CAPACITY,
+        POWER_SUPPLY_PROP_CAPACITY_LEVEL,
         POWER_SUPPLY_PROP_TEMP,
         POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
         POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
@@ -373,6 +378,36 @@ static int bq27x00_battery_status(struct bq27x00_device_info *di,
         return 0;
 }
 
+static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,
+        union power_supply_propval *val)
+{
+        int level;
+
+        if (di->chip == BQ27500) {
+                if (di->cache.flags & BQ27500_FLAG_FC)
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+                else if (di->cache.flags & BQ27500_FLAG_SOC1)
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+                else if (di->cache.flags & BQ27500_FLAG_SOCF)
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+                else
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+        } else {
+                if (di->cache.flags & BQ27000_FLAG_FC)
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+                else if (di->cache.flags & BQ27000_FLAG_EDV1)
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+                else if (di->cache.flags & BQ27000_FLAG_EDVF)
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+                else
+                        level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+        }
+
+        val->intval = level;
+
+        return 0;
+}
+
 /*
  * Return the battery Voltage in milivolts
  * Or < 0 if something fails.
@@ -464,6 +499,9 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
         case POWER_SUPPLY_PROP_CAPACITY:
                 ret = bq27x00_simple_value(di->cache.capacity, val);
                 break;
+        case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+                ret = bq27x00_battery_capacity_level(di, val);
+                break;
         case POWER_SUPPLY_PROP_TEMP:
                 ret = bq27x00_battery_temperature(di, val);
                 break;