diff mbox series

[2/4] power: supply: sc2731_charger: Add charger status detection

Message ID 7fa4e3191a6be72b5a90d0ee73b70457a699f9bd.1542019800.git.baolin.wang@linaro.org
State New
Headers show
Series None | expand

Commit Message

(Exiting) Baolin Wang Nov. 12, 2018, 10:52 a.m. UTC 
The USB charger status can be notified before the charger driver registers
the USB phy notifier, so we should check the charger status in probe() in
case we missed the USB charger notification.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

---
 drivers/power/supply/sc2731_charger.c |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

-- 
1.7.9.5
diff mbox series

Patch

diff --git a/drivers/power/supply/sc2731_charger.c b/drivers/power/supply/sc2731_charger.c
index 393ba98..a012d6c 100644
--- a/drivers/power/supply/sc2731_charger.c
+++ b/drivers/power/supply/sc2731_charger.c
@@ -432,6 +432,24 @@  static int sc2731_charger_hw_init(struct sc2731_charger_info *info)
 	return ret;
 }
 
+static void sc2731_charger_detect_status(struct sc2731_charger_info *info)
+{
+	unsigned int min, max;
+
+	/*
+	 * If the USB charger status has been USB_CHARGER_PRESENT before
+	 * registering the notifier, we should start to charge with getting
+	 * the charge current.
+	 */
+	if (info->usb_phy->chg_state != USB_CHARGER_PRESENT)
+		return;
+
+	usb_phy_get_charger_current(info->usb_phy, &min, &max);
+	info->limit = min;
+
+	schedule_work(&info->work);
+}
+
 static int sc2731_charger_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
@@ -486,6 +504,8 @@  static int sc2731_charger_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	sc2731_charger_detect_status(info);
+
 	return 0;
 }