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From: Wenyou Yang <wenyou.yang@atmel.com>
To: Sebastian Reichel <sre@kernel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
	Mark Brown <broonie@kernel.org>,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	"Kumar Gala" <galak@codeaurora.org>
Cc: <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	Nicolas Ferre <nicolas.ferre@atmel.com>,
	<linux-pm@vger.kernel.org>, Wenyou Yang <wenyou.yang@atmel.com>
Subject: [PATCH 2/7] power: act8945a_charger: Improve
Date: Fri, 24 Jun 2016 15:17:35 +0800	[thread overview]
Message-ID: <1466752660-2922-3-git-send-email-wenyou.yang@atmel.com> (raw)
In-Reply-To: <1466752660-2922-1-git-send-email-wenyou.yang@atmel.com>

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>
---

 drivers/power/act8945a_charger.c | 85 ++++++++++++++++++++++++++++++++--------
 1 file changed, 68 insertions(+), 17 deletions(-)

diff --git a/drivers/power/act8945a_charger.c b/drivers/power/act8945a_charger.c
index 72d39ba..939f1bb 100644
--- a/drivers/power/act8945a_charger.c
+++ b/drivers/power/act8945a_charger.c
@@ -94,17 +94,25 @@ 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;
 }
@@ -225,6 +268,7 @@ static int act8945a_charger_config(struct device *dev,
 	u32 input_voltage_threshold;
 	int chglev_pin;
 
+	unsigned int tmp;
 	unsigned int value = 0;
 
 	if (!np) {
@@ -232,6 +276,13 @@ 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;
+
 	chglev_pin = of_get_named_gpio_flags(np,
 				"active-semi,chglev-gpios", 0, &flags);
 
-- 
2.7.4

  parent reply	other threads:[~2016-06-24  7:28 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-24  7:17 [PATCH 0/7] power: act8945a_charger: Improvements Wenyou Yang
2016-06-24  7:17 ` [PATCH 1/7] power: act8945a_charger: Remove "battery_temperature" Wenyou Yang
2016-06-24  7:17 ` Wenyou Yang [this message]
2016-06-24 11:22   ` [PATCH 2/7] power: act8945a_charger: Improve kbuild test robot
2016-06-24 12:43   ` kbuild test robot
2016-06-24 12:43   ` [PATCH] power: act8945a_charger: fix semicolon.cocci warnings kbuild test robot
2016-06-28  1:34     ` Yang, Wenyou
2016-07-29  0:57     ` Yang, Wenyou
2016-07-29  1:01       ` [kbuild-all] " Fengguang Wu
2016-06-24  7:17 ` [PATCH 3/7] power: act8945a_charger: Add status change update support Wenyou Yang
2016-06-24  7:17 ` [PATCH 4/7] power: act8945a_charger: Fix the power supply type Wenyou Yang
2016-06-24  7:17 ` [PATCH 5/7] power: act8945a_charger: Add capacity level property Wenyou Yang
2016-06-24  7:17 ` [PATCH 6/7] power: act8945a_charger: Add max current property Wenyou Yang
2016-06-24  7:17 ` [PATCH 7/7] doc: bindings: act8945a-charger: Update properties Wenyou Yang

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