pcf50633: Add ac power supply class to the charger

This adds an appropriate ac power_supply class and shows usb only when
at the appropriate current limit.

Signed-off-by: Sean McNeil <sean@mcneil.com>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 45 insertions, 1 deletions

diff --git a/drivers/power/pcf50633-charger.c b/drivers/power/pcf50633-charger.c
index e8b278f7178..48e92c020f4 100644
--- a/drivers/power/pcf50633-charger.c
+++ b/drivers/power/pcf50633-charger.c
@@ -36,6 +36,7 @@ struct pcf50633_mbc {
 
         struct power_supply usb;
         struct power_supply adapter;
+        struct power_supply ac;
 
         struct delayed_work charging_restart_work;
 };
@@ -237,6 +238,7 @@ pcf50633_mbc_irq_handler(int irq, void *data)
         else if (irq == PCF50633_IRQ_USBLIMOFF)
                 mbc->usb_active = 1;
 
+        power_supply_changed(&mbc->ac);
         power_supply_changed(&mbc->usb);
         power_supply_changed(&mbc->adapter);
 
@@ -269,10 +271,34 @@ static int usb_get_property(struct power_supply *psy,
 {
         struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
         int ret = 0;
+        u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
+                                                PCF50633_MBCC7_USB_MASK;
+
+        switch (psp) {
+        case POWER_SUPPLY_PROP_ONLINE:
+                val->intval = mbc->usb_online &&
+                                (usblim <= PCF50633_MBCC7_USB_500mA);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+        return ret;
+}
+
+static int ac_get_property(struct power_supply *psy,
+                        enum power_supply_property psp,
+                        union power_supply_propval *val)
+{
+        struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, ac);
+        int ret = 0;
+        u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
+                                                PCF50633_MBCC7_USB_MASK;
 
         switch (psp) {
         case POWER_SUPPLY_PROP_ONLINE:
-                val->intval = mbc->usb_online;
+                val->intval = mbc->usb_online &&
+                                (usblim == PCF50633_MBCC7_USB_1000mA);
                 break;
         default:
                 ret = -EINVAL;
@@ -337,6 +363,14 @@ static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
         mbc->usb.supplied_to            = mbc->pcf->pdata->batteries;
         mbc->usb.num_supplicants        = mbc->pcf->pdata->num_batteries;
 
+        mbc->ac.name                    = "ac";
+        mbc->ac.type                    = POWER_SUPPLY_TYPE_MAINS;
+        mbc->ac.properties              = power_props;
+        mbc->ac.num_properties          = ARRAY_SIZE(power_props);
+        mbc->ac.get_property            = ac_get_property;
+        mbc->ac.supplied_to             = mbc->pcf->pdata->batteries;
+        mbc->ac.num_supplicants         = mbc->pcf->pdata->num_batteries;
+
         ret = power_supply_register(&pdev->dev, &mbc->adapter);
         if (ret) {
                 dev_err(mbc->pcf->dev, "failed to register adapter\n");
@@ -352,6 +386,15 @@ static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
                 return ret;
         }
 
+        ret = power_supply_register(&pdev->dev, &mbc->ac);
+        if (ret) {
+                dev_err(mbc->pcf->dev, "failed to register ac\n");
+                power_supply_unregister(&mbc->adapter);
+                power_supply_unregister(&mbc->usb);
+                kfree(mbc);
+                return ret;
+        }
+
         INIT_DELAYED_WORK(&mbc->charging_restart_work,
                                 pcf50633_mbc_charging_restart);
 
@@ -379,6 +422,7 @@ static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
 
         power_supply_unregister(&mbc->usb);
         power_supply_unregister(&mbc->adapter);
+        power_supply_unregister(&mbc->ac);
 
         cancel_delayed_work_sync(&mbc->charging_restart_work);