linux-kernel - [PATCH 01/18] power: ab8500_charger: Rename the power

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Message-Id: <1355412102-14265-2-git-send-email-lee.jones@linaro.org>
Date:	Thu, 13 Dec 2012 15:21:24 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-kernel@...r.kernel.org
Cc:	cbou@...l.ru,
	Paer-Olof Haakansson <par-olof.hakansson@...ricsson.com>,
	Lee Jones <lee.jones@...aro.org>,
	Robert Marklund <robert.marklund@...ricsson.com>
Subject: [PATCH 01/18] power: ab8500_charger: Rename the power_loss function

From: Paer-Olof Haakansson <par-olof.hakansson@...ricsson.com>

Rename the ab8500_power_loss_handling function to a more
descriptive name ab8500_enable_disable_sw_fallback

Signed-off-by: Lee Jones <lee.jones@...aro.org>
Signed-off-by: Robert Marklund <robert.marklund@...ricsson.com>
Reviewed-by: Par-Olof HAKANSSON <par-olof.hakansson@...ricsson.com>
Reviewed-by: Karl KOMIEROWSKI <karl.komierowski@...ricsson.com>
Tested-by: Par-Olof HAKANSSON <par-olof.hakansson@...ricsson.com>
---
 drivers/power/ab8500_charger.c |   23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index 2ddface..d6e1792 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -270,20 +270,19 @@ static enum power_supply_property ab8500_charger_usb_props[] = {
 	POWER_SUPPLY_PROP_CURRENT_NOW,
 };
 
-/**
- * ab8500_power_loss_handling - set how we handle powerloss.
- * @di:		pointer to the ab8500_charger structure
- *
- * Magic nummbers are from STE HW department.
+/*
+ * Function for enabling and disabling sw fallback mode
+ * should always be disabled when no charger is connected.
  */
-static void ab8500_power_loss_handling(struct ab8500_charger *di)
+static void ab8500_enable_disable_sw_fallback(struct ab8500_charger *di,
+		bool fallback)
 {
 	u8 reg;
 	int ret;
 
-	dev_dbg(di->dev, "Autopower : %d\n", di->autopower);
+	dev_dbg(di->dev, "SW Fallback: %d\n", fallback);
 
-	/* read the autopower register */
+	/* read the register containing fallback bit */
 	ret = abx500_get_register_interruptible(di->dev, 0x15, 0x00, &reg);
 	if (ret) {
 		dev_err(di->dev, "%d write failed\n", __LINE__);
@@ -297,12 +296,12 @@ static void ab8500_power_loss_handling(struct ab8500_charger *di)
 		return;
 	}
 
-	if (di->autopower)
+	if (fallback)
 		reg |= 0x8;
 	else
 		reg &= ~0x8;
 
-	/* write back the changed value to autopower reg */
+	/* write back the changed fallback bit value to register */
 	ret = abx500_set_register_interruptible(di->dev, 0x15, 0x00, reg);
 	if (ret) {
 		dev_err(di->dev, "%d write failed\n", __LINE__);
@@ -332,12 +331,12 @@ static void ab8500_power_supply_changed(struct ab8500_charger *di,
 		    !di->ac.charger_connected &&
 		    di->autopower) {
 			di->autopower = false;
-			ab8500_power_loss_handling(di);
+			ab8500_enable_disable_sw_fallback(di, false);
 		} else if (!di->autopower &&
 			   (di->ac.charger_connected ||
 			    di->usb.charger_connected)) {
 			di->autopower = true;
-			ab8500_power_loss_handling(di);
+			ab8500_enable_disable_sw_fallback(di, true);
 		}
 	}
 	power_supply_changed(psy);
-- 
1.7.9.5

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