struct pcf50633_mbc {
struct pcf50633 *pcf;
- int adapter_active;
int adapter_online;
- int usb_active;
int usb_online;
struct power_supply usb;
struct power_supply adapter;
+ struct power_supply ac;
};
int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
int ret = 0;
u8 bits;
+ int charging_start = 1;
+ u8 mbcs2, chgmod;
+ unsigned int mbcc5;
- if (ma >= 1000)
+ if (ma >= 1000) {
bits = PCF50633_MBCC7_USB_1000mA;
- else if (ma >= 500)
+ ma = 1000;
+ } else if (ma >= 500) {
bits = PCF50633_MBCC7_USB_500mA;
- else if (ma >= 100)
+ ma = 500;
+ } else if (ma >= 100) {
bits = PCF50633_MBCC7_USB_100mA;
- else
+ ma = 100;
+ } else {
bits = PCF50633_MBCC7_USB_SUSPEND;
+ charging_start = 0;
+ ma = 0;
+ }
ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
PCF50633_MBCC7_USB_MASK, bits);
else
dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
+ /*
+ * We limit the charging current to be the USB current limit.
+ * The reason is that on pcf50633, when it enters PMU Standby mode,
+ * which it does when the device goes "off", the USB current limit
+ * reverts to the variant default. In at least one common case, that
+ * default is 500mA. By setting the charging current to be the same
+ * as the USB limit we set here before PMU standby, we enforce it only
+ * using the correct amount of current even when the USB current limit
+ * gets reset to the wrong thing
+ */
+
+ if (mbc->pcf->pdata->charger_reference_current_ma) {
+ mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
+ if (mbcc5 > 255)
+ mbcc5 = 255;
+ pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
+ }
+
+ mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
+ chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
+
+ /* If chgmod == BATFULL, setting chgena has no effect.
+ * Datasheet says we need to set resume instead but when autoresume is
+ * used resume doesn't work. Clear and set chgena instead.
+ */
+ if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
+ pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
+ PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
+ else {
+ pcf50633_reg_clear_bits(pcf, PCF50633_REG_MBCC1,
+ PCF50633_MBCC1_CHGENA);
+ pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
+ PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
+ }
+
power_supply_changed(&mbc->usb);
return ret;
{
struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
int status = 0;
+ u8 chgmod;
+
+ if (!mbc)
+ return 0;
+
+ chgmod = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2)
+ & PCF50633_MBCS2_MBC_MASK;
if (mbc->usb_online)
status |= PCF50633_MBC_USB_ONLINE;
- if (mbc->usb_active)
+ if (chgmod == PCF50633_MBCS2_MBC_USB_PRE ||
+ chgmod == PCF50633_MBCS2_MBC_USB_PRE_WAIT ||
+ chgmod == PCF50633_MBCS2_MBC_USB_FAST ||
+ chgmod == PCF50633_MBCS2_MBC_USB_FAST_WAIT)
status |= PCF50633_MBC_USB_ACTIVE;
if (mbc->adapter_online)
status |= PCF50633_MBC_ADAPTER_ONLINE;
- if (mbc->adapter_active)
+ if (chgmod == PCF50633_MBCS2_MBC_ADP_PRE ||
+ chgmod == PCF50633_MBCS2_MBC_ADP_PRE_WAIT ||
+ chgmod == PCF50633_MBCS2_MBC_ADP_FAST ||
+ chgmod == PCF50633_MBCS2_MBC_ADP_FAST_WAIT)
status |= PCF50633_MBC_ADAPTER_ACTIVE;
return status;
}
EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
-void pcf50633_mbc_set_status(struct pcf50633 *pcf, int what, int status)
+int pcf50633_mbc_get_usb_online_status(struct pcf50633 *pcf)
{
- struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
+ struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
- if (what & PCF50633_MBC_USB_ONLINE)
- mbc->usb_online = !!status;
- if (what & PCF50633_MBC_USB_ACTIVE)
- mbc->usb_active = !!status;
- if (what & PCF50633_MBC_ADAPTER_ONLINE)
- mbc->adapter_online = !!status;
- if (what & PCF50633_MBC_ADAPTER_ACTIVE)
- mbc->adapter_active = !!status;
+ if (!mbc)
+ return 0;
+
+ return mbc->usb_online;
}
-EXPORT_SYMBOL_GPL(pcf50633_mbc_set_status);
+EXPORT_SYMBOL_GPL(pcf50633_mbc_get_usb_online_status);
static ssize_t
show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);
+static ssize_t
+show_chglim(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+ u8 mbcc5 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC5);
+ unsigned int ma;
+
+ if (!mbc->pcf->pdata->charger_reference_current_ma)
+ return -ENODEV;
+
+ ma = (mbc->pcf->pdata->charger_reference_current_ma * mbcc5) >> 8;
+
+ return sprintf(buf, "%u\n", ma);
+}
+
+static ssize_t set_chglim(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
+ unsigned long ma;
+ unsigned int mbcc5;
+ int ret;
+
+ if (!mbc->pcf->pdata->charger_reference_current_ma)
+ return -ENODEV;
+
+ ret = strict_strtoul(buf, 10, &ma);
+ if (ret)
+ return -EINVAL;
+
+ mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
+ if (mbcc5 > 255)
+ mbcc5 = 255;
+ pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
+
+ return count;
+}
+
+/*
+ * This attribute allows to change MBC charging limit on the fly
+ * independently of usb current limit. It also gets set automatically every
+ * time usb current limit is changed.
+ */
+static DEVICE_ATTR(chg_curlim, S_IRUGO | S_IWUSR, show_chglim, set_chglim);
+
static struct attribute *pcf50633_mbc_sysfs_entries[] = {
&dev_attr_chgmode.attr,
&dev_attr_usb_curlim.attr,
+ &dev_attr_chg_curlim.attr,
NULL,
};
mbc->usb_online = 1;
} else if (irq == PCF50633_IRQ_USBREM) {
mbc->usb_online = 0;
- mbc->usb_active = 0;
pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
}
/* Adapter */
- if (irq == PCF50633_IRQ_ADPINS) {
+ if (irq == PCF50633_IRQ_ADPINS)
mbc->adapter_online = 1;
- mbc->adapter_active = 1;
- } else if (irq == PCF50633_IRQ_ADPREM) {
+ else if (irq == PCF50633_IRQ_ADPREM)
mbc->adapter_online = 0;
- mbc->adapter_active = 0;
- }
-
- if (irq == PCF50633_IRQ_BATFULL) {
- mbc->usb_active = 0;
- mbc->adapter_active = 0;
- }
+ power_supply_changed(&mbc->ac);
power_supply_changed(&mbc->usb);
power_supply_changed(&mbc->adapter);
{
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;
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");
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;
+ }
+
ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
if (ret)
dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
power_supply_unregister(&mbc->usb);
power_supply_unregister(&mbc->adapter);
+ power_supply_unregister(&mbc->ac);
kfree(mbc);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff