Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6: power_supply_sysfs: Handle -ENODATA in a special way wm831x_backup: Remove unused variables gta02: Set pcf50633 charger_reference_current_ma pcf50633: Query charger status directly pcf50633: Properly reenable charging when the supply conditions change pcf50633: Get rid of charging restart software auto-triggering pcf50633: introduces battery charging current control pcf50633: Add ac power supply class to the charger wm831x: Factor out WM831x backup battery chargerwifi-calibration
Linus Torvalds
commit
48e902f0a3
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@ -268,6 +268,9 @@ struct pcf50633_platform_data gta02_pcf_pdata = {
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.batteries = gta02_batteries,
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.num_batteries = ARRAY_SIZE(gta02_batteries),
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.charger_reference_current_ma = 1000,
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.reg_init_data = {
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[PCF50633_REGULATOR_AUTO] = {
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.constraints = {
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@ -808,6 +808,9 @@ static struct resource wm831x_wdt_resources[] = {
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};
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static struct mfd_cell wm8310_devs[] = {
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{
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.name = "wm831x-backup",
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},
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{
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.name = "wm831x-buckv",
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.id = 1,
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@ -961,6 +964,9 @@ static struct mfd_cell wm8310_devs[] = {
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};
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static struct mfd_cell wm8311_devs[] = {
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{
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.name = "wm831x-backup",
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},
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{
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.name = "wm831x-buckv",
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.id = 1,
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@ -1095,6 +1101,9 @@ static struct mfd_cell wm8311_devs[] = {
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};
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static struct mfd_cell wm8312_devs[] = {
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{
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.name = "wm831x-backup",
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},
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{
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.name = "wm831x-buckv",
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.id = 1,
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@ -29,6 +29,13 @@ config APM_POWER
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Say Y here to enable support APM status emulation using
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battery class devices.
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config WM831X_BACKUP
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tristate "WM831X backup battery charger support"
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depends on MFD_WM831X
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help
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Say Y here to enable support for the backup battery charger
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in the Wolfson Microelectronics WM831x PMICs.
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config WM831X_POWER
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tristate "WM831X PMU support"
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depends on MFD_WM831X
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@ -16,6 +16,7 @@ obj-$(CONFIG_POWER_SUPPLY) += power_supply.o
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obj-$(CONFIG_PDA_POWER) += pda_power.o
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obj-$(CONFIG_APM_POWER) += apm_power.o
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obj-$(CONFIG_WM831X_BACKUP) += wm831x_backup.o
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obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
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obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
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@ -29,15 +29,12 @@
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struct pcf50633_mbc {
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struct pcf50633 *pcf;
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int adapter_active;
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int adapter_online;
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int usb_active;
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int usb_online;
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struct power_supply usb;
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struct power_supply adapter;
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struct delayed_work charging_restart_work;
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struct power_supply ac;
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};
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int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
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@ -47,16 +44,21 @@ int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
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u8 bits;
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int charging_start = 1;
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u8 mbcs2, chgmod;
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unsigned int mbcc5;
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if (ma >= 1000)
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if (ma >= 1000) {
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bits = PCF50633_MBCC7_USB_1000mA;
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else if (ma >= 500)
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ma = 1000;
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} else if (ma >= 500) {
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bits = PCF50633_MBCC7_USB_500mA;
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else if (ma >= 100)
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ma = 500;
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} else if (ma >= 100) {
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bits = PCF50633_MBCC7_USB_100mA;
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else {
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ma = 100;
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} else {
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bits = PCF50633_MBCC7_USB_SUSPEND;
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charging_start = 0;
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ma = 0;
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}
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ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
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@ -66,21 +68,40 @@ int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
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else
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dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
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/* Manual charging start */
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mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
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/*
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* We limit the charging current to be the USB current limit.
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* The reason is that on pcf50633, when it enters PMU Standby mode,
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* which it does when the device goes "off", the USB current limit
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* reverts to the variant default. In at least one common case, that
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* default is 500mA. By setting the charging current to be the same
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* as the USB limit we set here before PMU standby, we enforce it only
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* using the correct amount of current even when the USB current limit
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* gets reset to the wrong thing
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*/
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if (mbc->pcf->pdata->charger_reference_current_ma) {
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mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
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if (mbcc5 > 255)
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mbcc5 = 255;
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pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
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}
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mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
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chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
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/* If chgmod == BATFULL, setting chgena has no effect.
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* We need to set resume instead.
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* Datasheet says we need to set resume instead but when autoresume is
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* used resume doesn't work. Clear and set chgena instead.
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*/
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if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
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pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
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else
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else {
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pcf50633_reg_clear_bits(pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_CHGENA);
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pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
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mbc->usb_active = charging_start;
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PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
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}
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power_supply_changed(&mbc->usb);
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@ -92,20 +113,44 @@ int pcf50633_mbc_get_status(struct pcf50633 *pcf)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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int status = 0;
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u8 chgmod;
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if (!mbc)
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return 0;
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chgmod = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2)
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& PCF50633_MBCS2_MBC_MASK;
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if (mbc->usb_online)
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status |= PCF50633_MBC_USB_ONLINE;
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if (mbc->usb_active)
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if (chgmod == PCF50633_MBCS2_MBC_USB_PRE ||
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chgmod == PCF50633_MBCS2_MBC_USB_PRE_WAIT ||
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chgmod == PCF50633_MBCS2_MBC_USB_FAST ||
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chgmod == PCF50633_MBCS2_MBC_USB_FAST_WAIT)
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status |= PCF50633_MBC_USB_ACTIVE;
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if (mbc->adapter_online)
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status |= PCF50633_MBC_ADAPTER_ONLINE;
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if (mbc->adapter_active)
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if (chgmod == PCF50633_MBCS2_MBC_ADP_PRE ||
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chgmod == PCF50633_MBCS2_MBC_ADP_PRE_WAIT ||
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chgmod == PCF50633_MBCS2_MBC_ADP_FAST ||
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chgmod == PCF50633_MBCS2_MBC_ADP_FAST_WAIT)
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status |= PCF50633_MBC_ADAPTER_ACTIVE;
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return status;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
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int pcf50633_mbc_get_usb_online_status(struct pcf50633 *pcf)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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if (!mbc)
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return 0;
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return mbc->usb_online;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_get_usb_online_status);
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static ssize_t
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show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
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{
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@ -156,9 +201,55 @@ static ssize_t set_usblim(struct device *dev,
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static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);
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static ssize_t
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show_chglim(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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u8 mbcc5 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC5);
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unsigned int ma;
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if (!mbc->pcf->pdata->charger_reference_current_ma)
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return -ENODEV;
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ma = (mbc->pcf->pdata->charger_reference_current_ma * mbcc5) >> 8;
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return sprintf(buf, "%u\n", ma);
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}
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static ssize_t set_chglim(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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unsigned long ma;
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unsigned int mbcc5;
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int ret;
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if (!mbc->pcf->pdata->charger_reference_current_ma)
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return -ENODEV;
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ret = strict_strtoul(buf, 10, &ma);
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if (ret)
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return -EINVAL;
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mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
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if (mbcc5 > 255)
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mbcc5 = 255;
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pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
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return count;
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}
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/*
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* This attribute allows to change MBC charging limit on the fly
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* independently of usb current limit. It also gets set automatically every
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* time usb current limit is changed.
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*/
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static DEVICE_ATTR(chg_curlim, S_IRUGO | S_IWUSR, show_chglim, set_chglim);
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static struct attribute *pcf50633_mbc_sysfs_entries[] = {
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&dev_attr_chgmode.attr,
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&dev_attr_usb_curlim.attr,
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&dev_attr_chg_curlim.attr,
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NULL,
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};
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@ -167,76 +258,26 @@ static struct attribute_group mbc_attr_group = {
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.attrs = pcf50633_mbc_sysfs_entries,
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};
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/* MBC state machine switches into charging mode when the battery voltage
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* falls below 96% of a battery float voltage. But the voltage drop in Li-ion
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* batteries is marginal(1~2 %) till about 80% of its capacity - which means,
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* after a BATFULL, charging won't be restarted until 80%.
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*
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* This work_struct function restarts charging at regular intervals to make
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* sure we don't discharge too much
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*/
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static void pcf50633_mbc_charging_restart(struct work_struct *work)
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{
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struct pcf50633_mbc *mbc;
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u8 mbcs2, chgmod;
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mbc = container_of(work, struct pcf50633_mbc,
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charging_restart_work.work);
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mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
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chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
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if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
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return;
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/* Restart charging */
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pcf50633_reg_set_bit_mask(mbc->pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
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mbc->usb_active = 1;
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power_supply_changed(&mbc->usb);
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dev_info(mbc->pcf->dev, "Charging restarted\n");
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}
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static void
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pcf50633_mbc_irq_handler(int irq, void *data)
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{
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struct pcf50633_mbc *mbc = data;
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int chg_restart_interval =
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mbc->pcf->pdata->charging_restart_interval;
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/* USB */
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if (irq == PCF50633_IRQ_USBINS) {
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mbc->usb_online = 1;
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} else if (irq == PCF50633_IRQ_USBREM) {
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mbc->usb_online = 0;
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mbc->usb_active = 0;
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pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
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cancel_delayed_work_sync(&mbc->charging_restart_work);
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}
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/* Adapter */
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if (irq == PCF50633_IRQ_ADPINS) {
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if (irq == PCF50633_IRQ_ADPINS)
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mbc->adapter_online = 1;
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mbc->adapter_active = 1;
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} else if (irq == PCF50633_IRQ_ADPREM) {
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else if (irq == PCF50633_IRQ_ADPREM)
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mbc->adapter_online = 0;
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mbc->adapter_active = 0;
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}
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if (irq == PCF50633_IRQ_BATFULL) {
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mbc->usb_active = 0;
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mbc->adapter_active = 0;
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if (chg_restart_interval > 0)
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schedule_delayed_work(&mbc->charging_restart_work,
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chg_restart_interval);
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} else if (irq == PCF50633_IRQ_USBLIMON)
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mbc->usb_active = 0;
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else if (irq == PCF50633_IRQ_USBLIMOFF)
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mbc->usb_active = 1;
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power_supply_changed(&mbc->ac);
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power_supply_changed(&mbc->usb);
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power_supply_changed(&mbc->adapter);
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@ -269,10 +310,34 @@ static int usb_get_property(struct power_supply *psy,
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{
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struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
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int ret = 0;
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u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
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PCF50633_MBCC7_USB_MASK;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->usb_online;
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val->intval = mbc->usb_online &&
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(usblim <= PCF50633_MBCC7_USB_500mA);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int ac_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, ac);
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int ret = 0;
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u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
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PCF50633_MBCC7_USB_MASK;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->usb_online &&
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(usblim == PCF50633_MBCC7_USB_1000mA);
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break;
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default:
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ret = -EINVAL;
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@ -336,6 +401,14 @@ static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
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mbc->usb.supplied_to = mbc->pcf->pdata->batteries;
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mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries;
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mbc->ac.name = "ac";
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mbc->ac.type = POWER_SUPPLY_TYPE_MAINS;
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mbc->ac.properties = power_props;
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mbc->ac.num_properties = ARRAY_SIZE(power_props);
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mbc->ac.get_property = ac_get_property;
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mbc->ac.supplied_to = mbc->pcf->pdata->batteries;
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mbc->ac.num_supplicants = mbc->pcf->pdata->num_batteries;
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ret = power_supply_register(&pdev->dev, &mbc->adapter);
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if (ret) {
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dev_err(mbc->pcf->dev, "failed to register adapter\n");
|
||||
|
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@ -351,8 +424,14 @@ static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
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return ret;
|
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}
|
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|
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INIT_DELAYED_WORK(&mbc->charging_restart_work,
|
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pcf50633_mbc_charging_restart);
|
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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);
|
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power_supply_unregister(&mbc->usb);
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kfree(mbc);
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return ret;
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}
|
||||
|
||||
ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
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||||
if (ret)
|
||||
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@ -378,8 +457,7 @@ static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
|
|||
|
||||
power_supply_unregister(&mbc->usb);
|
||||
power_supply_unregister(&mbc->adapter);
|
||||
|
||||
cancel_delayed_work_sync(&mbc->charging_restart_work);
|
||||
power_supply_unregister(&mbc->ac);
|
||||
|
||||
kfree(mbc);
|
||||
|
||||
|
|
|
|||
|
|
@ -65,7 +65,10 @@ static ssize_t power_supply_show_property(struct device *dev,
|
|||
ret = psy->get_property(psy, off, &value);
|
||||
|
||||
if (ret < 0) {
|
||||
if (ret != -ENODEV)
|
||||
if (ret == -ENODATA)
|
||||
dev_dbg(dev, "driver has no data for `%s' property\n",
|
||||
attr->attr.name);
|
||||
else if (ret != -ENODEV)
|
||||
dev_err(dev, "driver failed to report `%s' property\n",
|
||||
attr->attr.name);
|
||||
return ret;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,233 @@
|
|||
/*
|
||||
* Backup battery driver for Wolfson Microelectronics wm831x PMICs
|
||||
*
|
||||
* Copyright 2009 Wolfson Microelectronics PLC.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/power_supply.h>
|
||||
|
||||
#include <linux/mfd/wm831x/core.h>
|
||||
#include <linux/mfd/wm831x/auxadc.h>
|
||||
#include <linux/mfd/wm831x/pmu.h>
|
||||
#include <linux/mfd/wm831x/pdata.h>
|
||||
|
||||
struct wm831x_backup {
|
||||
struct wm831x *wm831x;
|
||||
struct power_supply backup;
|
||||
};
|
||||
|
||||
static int wm831x_backup_read_voltage(struct wm831x *wm831x,
|
||||
enum wm831x_auxadc src,
|
||||
union power_supply_propval *val)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = wm831x_auxadc_read_uv(wm831x, src);
|
||||
if (ret >= 0)
|
||||
val->intval = ret;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*********************************************************************
|
||||
* Backup supply properties
|
||||
*********************************************************************/
|
||||
|
||||
static void wm831x_config_backup(struct wm831x *wm831x)
|
||||
{
|
||||
struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
|
||||
struct wm831x_backup_pdata *pdata;
|
||||
int ret, reg;
|
||||
|
||||
if (!wm831x_pdata || !wm831x_pdata->backup) {
|
||||
dev_warn(wm831x->dev,
|
||||
"No backup battery charger configuration\n");
|
||||
return;
|
||||
}
|
||||
|
||||
pdata = wm831x_pdata->backup;
|
||||
|
||||
reg = 0;
|
||||
|
||||
if (pdata->charger_enable)
|
||||
reg |= WM831X_BKUP_CHG_ENA | WM831X_BKUP_BATT_DET_ENA;
|
||||
if (pdata->no_constant_voltage)
|
||||
reg |= WM831X_BKUP_CHG_MODE;
|
||||
|
||||
switch (pdata->vlim) {
|
||||
case 2500:
|
||||
break;
|
||||
case 3100:
|
||||
reg |= WM831X_BKUP_CHG_VLIM;
|
||||
break;
|
||||
default:
|
||||
dev_err(wm831x->dev, "Invalid backup voltage limit %dmV\n",
|
||||
pdata->vlim);
|
||||
}
|
||||
|
||||
switch (pdata->ilim) {
|
||||
case 100:
|
||||
break;
|
||||
case 200:
|
||||
reg |= 1;
|
||||
break;
|
||||
case 300:
|
||||
reg |= 2;
|
||||
break;
|
||||
case 400:
|
||||
reg |= 3;
|
||||
break;
|
||||
default:
|
||||
dev_err(wm831x->dev, "Invalid backup current limit %duA\n",
|
||||
pdata->ilim);
|
||||
}
|
||||
|
||||
ret = wm831x_reg_unlock(wm831x);
|
||||
if (ret != 0) {
|
||||
dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = wm831x_set_bits(wm831x, WM831X_BACKUP_CHARGER_CONTROL,
|
||||
WM831X_BKUP_CHG_ENA_MASK |
|
||||
WM831X_BKUP_CHG_MODE_MASK |
|
||||
WM831X_BKUP_BATT_DET_ENA_MASK |
|
||||
WM831X_BKUP_CHG_VLIM_MASK |
|
||||
WM831X_BKUP_CHG_ILIM_MASK,
|
||||
reg);
|
||||
if (ret != 0)
|
||||
dev_err(wm831x->dev,
|
||||
"Failed to set backup charger config: %d\n", ret);
|
||||
|
||||
wm831x_reg_lock(wm831x);
|
||||
}
|
||||
|
||||
static int wm831x_backup_get_prop(struct power_supply *psy,
|
||||
enum power_supply_property psp,
|
||||
union power_supply_propval *val)
|
||||
{
|
||||
struct wm831x_backup *devdata = dev_get_drvdata(psy->dev->parent);
|
||||
struct wm831x *wm831x = devdata->wm831x;
|
||||
int ret = 0;
|
||||
|
||||
ret = wm831x_reg_read(wm831x, WM831X_BACKUP_CHARGER_CONTROL);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
switch (psp) {
|
||||
case POWER_SUPPLY_PROP_STATUS:
|
||||
if (ret & WM831X_BKUP_CHG_STS)
|
||||
val->intval = POWER_SUPPLY_STATUS_CHARGING;
|
||||
else
|
||||
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
|
||||
break;
|
||||
|
||||
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
||||
ret = wm831x_backup_read_voltage(wm831x, WM831X_AUX_BKUP_BATT,
|
||||
val);
|
||||
break;
|
||||
|
||||
case POWER_SUPPLY_PROP_PRESENT:
|
||||
if (ret & WM831X_BKUP_CHG_STS)
|
||||
val->intval = 1;
|
||||
else
|
||||
val->intval = 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static enum power_supply_property wm831x_backup_props[] = {
|
||||
POWER_SUPPLY_PROP_STATUS,
|
||||
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
||||
POWER_SUPPLY_PROP_PRESENT,
|
||||
};
|
||||
|
||||
/*********************************************************************
|
||||
* Initialisation
|
||||
*********************************************************************/
|
||||
|
||||
static __devinit int wm831x_backup_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct wm831x_backup *devdata;
|
||||
struct power_supply *backup;
|
||||
int ret;
|
||||
|
||||
devdata = kzalloc(sizeof(struct wm831x_backup), GFP_KERNEL);
|
||||
if (devdata == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
devdata->wm831x = wm831x;
|
||||
platform_set_drvdata(pdev, devdata);
|
||||
|
||||
backup = &devdata->backup;
|
||||
|
||||
/* We ignore configuration failures since we can still read
|
||||
* back the status without enabling the charger (which may
|
||||
* already be enabled anyway).
|
||||
*/
|
||||
wm831x_config_backup(wm831x);
|
||||
|
||||
backup->name = "wm831x-backup";
|
||||
backup->type = POWER_SUPPLY_TYPE_BATTERY;
|
||||
backup->properties = wm831x_backup_props;
|
||||
backup->num_properties = ARRAY_SIZE(wm831x_backup_props);
|
||||
backup->get_property = wm831x_backup_get_prop;
|
||||
ret = power_supply_register(&pdev->dev, backup);
|
||||
if (ret)
|
||||
goto err_kmalloc;
|
||||
|
||||
return ret;
|
||||
|
||||
err_kmalloc:
|
||||
kfree(devdata);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static __devexit int wm831x_backup_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct wm831x_backup *devdata = platform_get_drvdata(pdev);
|
||||
|
||||
power_supply_unregister(&devdata->backup);
|
||||
kfree(devdata);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver wm831x_backup_driver = {
|
||||
.probe = wm831x_backup_probe,
|
||||
.remove = __devexit_p(wm831x_backup_remove),
|
||||
.driver = {
|
||||
.name = "wm831x-backup",
|
||||
},
|
||||
};
|
||||
|
||||
static int __init wm831x_backup_init(void)
|
||||
{
|
||||
return platform_driver_register(&wm831x_backup_driver);
|
||||
}
|
||||
module_init(wm831x_backup_init);
|
||||
|
||||
static void __exit wm831x_backup_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&wm831x_backup_driver);
|
||||
}
|
||||
module_exit(wm831x_backup_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Backup battery charger driver for WM831x PMICs");
|
||||
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:wm831x-backup");
|
||||
|
|
@ -21,7 +21,6 @@
|
|||
struct wm831x_power {
|
||||
struct wm831x *wm831x;
|
||||
struct power_supply wall;
|
||||
struct power_supply backup;
|
||||
struct power_supply usb;
|
||||
struct power_supply battery;
|
||||
};
|
||||
|
|
@ -453,125 +452,6 @@ static irqreturn_t wm831x_bat_irq(int irq, void *data)
|
|||
}
|
||||
|
||||
|
||||
/*********************************************************************
|
||||
* Backup supply properties
|
||||
*********************************************************************/
|
||||
|
||||
static void wm831x_config_backup(struct wm831x *wm831x)
|
||||
{
|
||||
struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data;
|
||||
struct wm831x_backup_pdata *pdata;
|
||||
int ret, reg;
|
||||
|
||||
if (!wm831x_pdata || !wm831x_pdata->backup) {
|
||||
dev_warn(wm831x->dev,
|
||||
"No backup battery charger configuration\n");
|
||||
return;
|
||||
}
|
||||
|
||||
pdata = wm831x_pdata->backup;
|
||||
|
||||
reg = 0;
|
||||
|
||||
if (pdata->charger_enable)
|
||||
reg |= WM831X_BKUP_CHG_ENA | WM831X_BKUP_BATT_DET_ENA;
|
||||
if (pdata->no_constant_voltage)
|
||||
reg |= WM831X_BKUP_CHG_MODE;
|
||||
|
||||
switch (pdata->vlim) {
|
||||
case 2500:
|
||||
break;
|
||||
case 3100:
|
||||
reg |= WM831X_BKUP_CHG_VLIM;
|
||||
break;
|
||||
default:
|
||||
dev_err(wm831x->dev, "Invalid backup voltage limit %dmV\n",
|
||||
pdata->vlim);
|
||||
}
|
||||
|
||||
switch (pdata->ilim) {
|
||||
case 100:
|
||||
break;
|
||||
case 200:
|
||||
reg |= 1;
|
||||
break;
|
||||
case 300:
|
||||
reg |= 2;
|
||||
break;
|
||||
case 400:
|
||||
reg |= 3;
|
||||
break;
|
||||
default:
|
||||
dev_err(wm831x->dev, "Invalid backup current limit %duA\n",
|
||||
pdata->ilim);
|
||||
}
|
||||
|
||||
ret = wm831x_reg_unlock(wm831x);
|
||||
if (ret != 0) {
|
||||
dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = wm831x_set_bits(wm831x, WM831X_BACKUP_CHARGER_CONTROL,
|
||||
WM831X_BKUP_CHG_ENA_MASK |
|
||||
WM831X_BKUP_CHG_MODE_MASK |
|
||||
WM831X_BKUP_BATT_DET_ENA_MASK |
|
||||
WM831X_BKUP_CHG_VLIM_MASK |
|
||||
WM831X_BKUP_CHG_ILIM_MASK,
|
||||
reg);
|
||||
if (ret != 0)
|
||||
dev_err(wm831x->dev,
|
||||
"Failed to set backup charger config: %d\n", ret);
|
||||
|
||||
wm831x_reg_lock(wm831x);
|
||||
}
|
||||
|
||||
static int wm831x_backup_get_prop(struct power_supply *psy,
|
||||
enum power_supply_property psp,
|
||||
union power_supply_propval *val)
|
||||
{
|
||||
struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent);
|
||||
struct wm831x *wm831x = wm831x_power->wm831x;
|
||||
int ret = 0;
|
||||
|
||||
ret = wm831x_reg_read(wm831x, WM831X_BACKUP_CHARGER_CONTROL);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
switch (psp) {
|
||||
case POWER_SUPPLY_PROP_STATUS:
|
||||
if (ret & WM831X_BKUP_CHG_STS)
|
||||
val->intval = POWER_SUPPLY_STATUS_CHARGING;
|
||||
else
|
||||
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
|
||||
break;
|
||||
|
||||
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
||||
ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BKUP_BATT,
|
||||
val);
|
||||
break;
|
||||
|
||||
case POWER_SUPPLY_PROP_PRESENT:
|
||||
if (ret & WM831X_BKUP_CHG_STS)
|
||||
val->intval = 1;
|
||||
else
|
||||
val->intval = 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static enum power_supply_property wm831x_backup_props[] = {
|
||||
POWER_SUPPLY_PROP_STATUS,
|
||||
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
||||
POWER_SUPPLY_PROP_PRESENT,
|
||||
};
|
||||
|
||||
/*********************************************************************
|
||||
* Initialisation
|
||||
*********************************************************************/
|
||||
|
|
@ -595,10 +475,7 @@ static irqreturn_t wm831x_pwr_src_irq(int irq, void *data)
|
|||
|
||||
dev_dbg(wm831x->dev, "Power source changed\n");
|
||||
|
||||
/* Just notify for everything - little harm in overnotifying.
|
||||
* The backup battery is not a power source while the system
|
||||
* is running so skip that.
|
||||
*/
|
||||
/* Just notify for everything - little harm in overnotifying. */
|
||||
power_supply_changed(&wm831x_power->battery);
|
||||
power_supply_changed(&wm831x_power->usb);
|
||||
power_supply_changed(&wm831x_power->wall);
|
||||
|
|
@ -613,7 +490,6 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev)
|
|||
struct power_supply *usb;
|
||||
struct power_supply *battery;
|
||||
struct power_supply *wall;
|
||||
struct power_supply *backup;
|
||||
int ret, irq, i;
|
||||
|
||||
power = kzalloc(sizeof(struct wm831x_power), GFP_KERNEL);
|
||||
|
|
@ -626,13 +502,11 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev)
|
|||
usb = &power->usb;
|
||||
battery = &power->battery;
|
||||
wall = &power->wall;
|
||||
backup = &power->backup;
|
||||
|
||||
/* We ignore configuration failures since we can still read back
|
||||
* the status without enabling either of the chargers.
|
||||
* the status without enabling the charger.
|
||||
*/
|
||||
wm831x_config_battery(wm831x);
|
||||
wm831x_config_backup(wm831x);
|
||||
|
||||
wall->name = "wm831x-wall";
|
||||
wall->type = POWER_SUPPLY_TYPE_MAINS;
|
||||
|
|
@ -661,15 +535,6 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev)
|
|||
if (ret)
|
||||
goto err_battery;
|
||||
|
||||
backup->name = "wm831x-backup";
|
||||
backup->type = POWER_SUPPLY_TYPE_BATTERY;
|
||||
backup->properties = wm831x_backup_props;
|
||||
backup->num_properties = ARRAY_SIZE(wm831x_backup_props);
|
||||
backup->get_property = wm831x_backup_get_prop;
|
||||
ret = power_supply_register(&pdev->dev, backup);
|
||||
if (ret)
|
||||
goto err_usb;
|
||||
|
||||
irq = platform_get_irq_byname(pdev, "SYSLO");
|
||||
ret = wm831x_request_irq(wm831x, irq, wm831x_syslo_irq,
|
||||
IRQF_TRIGGER_RISING, "SYSLO",
|
||||
|
|
@ -677,7 +542,7 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev)
|
|||
if (ret != 0) {
|
||||
dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n",
|
||||
irq, ret);
|
||||
goto err_backup;
|
||||
goto err_usb;
|
||||
}
|
||||
|
||||
irq = platform_get_irq_byname(pdev, "PWR SRC");
|
||||
|
|
@ -716,8 +581,6 @@ err_bat_irq:
|
|||
err_syslo:
|
||||
irq = platform_get_irq_byname(pdev, "SYSLO");
|
||||
wm831x_free_irq(wm831x, irq, power);
|
||||
err_backup:
|
||||
power_supply_unregister(backup);
|
||||
err_usb:
|
||||
power_supply_unregister(usb);
|
||||
err_battery:
|
||||
|
|
@ -746,7 +609,6 @@ static __devexit int wm831x_power_remove(struct platform_device *pdev)
|
|||
irq = platform_get_irq_byname(pdev, "SYSLO");
|
||||
wm831x_free_irq(wm831x, irq, wm831x_power);
|
||||
|
||||
power_supply_unregister(&wm831x_power->backup);
|
||||
power_supply_unregister(&wm831x_power->battery);
|
||||
power_supply_unregister(&wm831x_power->wall);
|
||||
power_supply_unregister(&wm831x_power->usb);
|
||||
|
|
|
|||
|
|
@ -29,7 +29,12 @@ struct pcf50633_platform_data {
|
|||
char **batteries;
|
||||
int num_batteries;
|
||||
|
||||
int charging_restart_interval;
|
||||
/*
|
||||
* Should be set accordingly to the reference resistor used, see
|
||||
* I_{ch(ref)} charger reference current in the pcf50633 User
|
||||
* Manual.
|
||||
*/
|
||||
int charger_reference_current_ma;
|
||||
|
||||
/* Callbacks */
|
||||
void (*probe_done)(struct pcf50633 *);
|
||||
|
|
|
|||
|
|
@ -128,6 +128,7 @@ enum pcf50633_reg_mbcs3 {
|
|||
int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma);
|
||||
|
||||
int pcf50633_mbc_get_status(struct pcf50633 *);
|
||||
int pcf50633_mbc_get_usb_online_status(struct pcf50633 *);
|
||||
|
||||
#endif
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue