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authorWenyou Yang <wenyou.yang@atmel.com>2016-08-25 15:19:52 +0800
committerSebastian Reichel <sre@kernel.org>2016-08-31 16:46:54 +0200
commit1f0ba4067af4bda55b7304e74fc20a245912b728 (patch)
tree42ae5b0c2505c18adb90897d87255ef086c235b1 /drivers/power
parent6b021fc91038201ed44e99ae32b6a93c6e8be1f4 (diff)
power: supply: act8945a_charger: Improve state handling
When get the property, first check the charger state machine, then check the status bit to decide what value is assigned to the corresponding property. Retain the SUSCHG bit of REG 0x71 when configure the timers to avoid losting the charger suspending info after boot. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/supply/act8945a_charger.c86
1 files changed, 70 insertions, 16 deletions
diff --git a/drivers/power/supply/act8945a_charger.c b/drivers/power/supply/act8945a_charger.c
index af006680dd5c..a6bbaff5483e 100644
--- a/drivers/power/supply/act8945a_charger.c
+++ b/drivers/power/supply/act8945a_charger.c
@@ -94,16 +94,24 @@ static int act8945a_get_charger_state(struct regmap *regmap, int *val)
state &= APCH_STATE_CSTATE;
state >>= APCH_STATE_CSTATE_SHIFT;
- if (state == APCH_STATE_CSTATE_EOC) {
+ switch (state) {
+ case APCH_STATE_CSTATE_PRE:
+ case APCH_STATE_CSTATE_FAST:
+ *val = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case APCH_STATE_CSTATE_EOC:
if (status & APCH_STATUS_CHGDAT)
*val = POWER_SUPPLY_STATUS_FULL;
else
+ *val = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case APCH_STATE_CSTATE_DISABLED:
+ default:
+ if (!(status & APCH_STATUS_INDAT))
+ *val = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
*val = POWER_SUPPLY_STATUS_NOT_CHARGING;
- } else if ((state == APCH_STATE_CSTATE_FAST) ||
- (state == APCH_STATE_CSTATE_PRE)) {
- *val = POWER_SUPPLY_STATUS_CHARGING;
- } else {
- *val = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
}
return 0;
@@ -112,7 +120,11 @@ static int act8945a_get_charger_state(struct regmap *regmap, int *val)
static int act8945a_get_charge_type(struct regmap *regmap, int *val)
{
int ret;
- unsigned int state;
+ unsigned int status, state;
+
+ ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
+ if (ret < 0)
+ return ret;
ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
if (ret < 0)
@@ -129,9 +141,15 @@ static int act8945a_get_charge_type(struct regmap *regmap, int *val)
*val = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case APCH_STATE_CSTATE_EOC:
+ *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
case APCH_STATE_CSTATE_DISABLED:
default:
- *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ if (!(status & APCH_STATUS_INDAT))
+ *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ else
+ *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ break;
}
return 0;
@@ -140,20 +158,45 @@ static int act8945a_get_charge_type(struct regmap *regmap, int *val)
static int act8945a_get_battery_health(struct regmap *regmap, int *val)
{
int ret;
- unsigned int status;
+ unsigned int status, state, config;
ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
if (ret < 0)
return ret;
- if (!(status & APCH_STATUS_TEMPDAT))
- *val = POWER_SUPPLY_HEALTH_OVERHEAT;
- else if (!(status & APCH_STATUS_INDAT))
- *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
- else if (status & APCH_STATUS_TIMRDAT)
- *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
- else
+ ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
+ if (ret < 0)
+ return ret;
+
+ state &= APCH_STATE_CSTATE;
+ state >>= APCH_STATE_CSTATE_SHIFT;
+
+ switch (state) {
+ case APCH_STATE_CSTATE_DISABLED:
+ if (config & APCH_CFG_SUSCHG) {
+ *val = POWER_SUPPLY_HEALTH_UNKNOWN;
+ } else if (status & APCH_STATUS_INDAT) {
+ if (!(status & APCH_STATUS_TEMPDAT))
+ *val = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (status & APCH_STATUS_TIMRDAT)
+ *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
+ else
+ *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ } else {
+ *val = POWER_SUPPLY_HEALTH_GOOD;
+ }
+ break;
+ case APCH_STATE_CSTATE_PRE:
+ case APCH_STATE_CSTATE_FAST:
+ case APCH_STATE_CSTATE_EOC:
+ default:
*val = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ }
return 0;
}
@@ -224,7 +267,9 @@ static int act8945a_charger_config(struct device *dev,
u32 pre_time_out;
u32 input_voltage_threshold;
int chglev_pin;
+ int ret;
+ unsigned int tmp;
unsigned int value = 0;
if (!np) {
@@ -232,6 +277,15 @@ static int act8945a_charger_config(struct device *dev,
return -EINVAL;
}
+ ret = regmap_read(regmap, ACT8945A_APCH_CFG, &tmp);
+ if (ret)
+ return ret;
+
+ if (tmp & APCH_CFG_SUSCHG) {
+ value |= APCH_CFG_SUSCHG;
+ dev_info(dev, "have been suspended\n");
+ }
+
chglev_pin = of_get_named_gpio_flags(np,
"active-semi,chglev-gpios", 0, &flags);