static int clear_alarm_int_status(struct device *dev, struct tps80031_rtc *rtc)
{
int ret;
u8 buf;
/**
* As per datasheet, A dummy read of this RTC_STATUS_REG register
* is necessary before each I2C read in order to update the status
* register value.
*/
ret = tps80031_read(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_STATUS_REG, &buf);
if (ret < 0) {
dev_err(dev, "reading RTC_STATUS failed. err = %d\n", ret);
return ret;
}
/* clear Alarm status bits.*/
ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_STATUS_REG, ALARM_INT_STATUS);
if (ret < 0) {
dev_err(dev, "clear Alarm INT failed, err = %d\n", ret);
return ret;
}
return 0;
}
static int tps80031_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
u8 buff[7];
int ret;
buff[0] = bin2bcd(tm->tm_sec);
buff[1] = bin2bcd(tm->tm_min);
buff[2] = bin2bcd(tm->tm_hour);
buff[3] = bin2bcd(tm->tm_mday);
buff[4] = bin2bcd(tm->tm_mon + 1);
buff[5] = bin2bcd(tm->tm_year % RTC_YEAR_OFFSET);
buff[6] = bin2bcd(tm->tm_wday);
/* Stop RTC while updating the RTC time registers */
ret = tps80031_clr_bits(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_CTRL_REG, STOP_RTC);
if (ret < 0) {
dev_err(dev->parent, "Stop RTC failed, err = %d\n", ret);
return ret;
}
ret = tps80031_writes(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_SECONDS_REG,
TPS80031_RTC_TIME_NUM_REGS, buff);
if (ret < 0) {
dev_err(dev, "writing RTC_SECONDS_REG failed, err %d\n", ret);
return ret;
}
ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_CTRL_REG, STOP_RTC);
if (ret < 0)
dev_err(dev->parent, "Start RTC failed, err = %d\n", ret);
return ret;
}
static int tps80031_rtc_alarm_irq_enable(struct device *dev,
unsigned int enable)
{
struct tps80031_rtc *rtc = dev_get_drvdata(dev);
int err;
struct device *p = dev->parent;
if (rtc->irq == -1)
return -EIO;
if (enable) {
if (rtc->irq_en == true)
return 0;
err = tps80031_set_bits(p, 1, RTC_INT, ENABLE_ALARM_INT);
if (err < 0) {
dev_err(p, "failed to set ALRM int. err: %d\n", err);
return err;
}
rtc->irq_en = true;
} else {
if (rtc->irq_en == false)
return 0;
err = tps80031_clr_bits(p, 1, RTC_INT, ENABLE_ALARM_INT);
if (err < 0) {
dev_err(p, "failed to clear ALRM int. err: %d\n", err);
return err;
}
rtc->irq_en = false;
}
return 0;
}
static int tps80031_rtc_start(struct device *dev)
{
int err;
err = tps80031_set_bits(dev->parent, 1, RTC_CTRL, STOP_RTC);
if (err < 0)
dev_err(dev->parent, "failed to start RTC. err: %d\n", err);
return err;
}
static int tps80031_vbus_enable(struct regulator_dev *rdev)
{
struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
struct device *parent = to_tps80031_dev(rdev);
int ret;
ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL1, ret);
return ret;
}
ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
if (ret < 0) {
dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
TPS80031_CHARGERUSB_CTRL3, ret);
return ret;
}
return ret;
}
static int tps80031_rtc_alarm_irq_enable(struct device *dev,
unsigned int enable)
{
int ret;
if (enable)
ret = tps80031_set_bits(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_INTERRUPTS_REG, ENABLE_ALARM_INT);
else
ret = tps80031_clr_bits(dev->parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_INTERRUPTS_REG, ENABLE_ALARM_INT);
if (ret < 0) {
dev_err(dev, "Update on RTC_INT failed, err = %d\n", ret);
return ret;
}
return 0;
}
static int configure_charging_parameter(struct tps80031_charger *charger)
{
int ret;
int max_charge_current;
int max_charge_volt;
int term_current;
/* Disable watchdog timer */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CONTROLLER_WDG, 0x0);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CONTROLLER_WDG);
return ret;
}
/* Disable the charging if any */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CONTROLLER_CTRL1, 0x0);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CONTROLLER_CTRL1);
return ret;
}
if (charger->board_init) {
ret = charger->board_init(charger->board_data);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in board init\n",
__func__);
return ret;
}
}
/* Unlock value */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT2, 0);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRLLIMIT2);
return ret;
}
/* Set max current limit */
max_charge_current = min(1500, charger->max_charge_current_mA);
if (max_charge_current < 100)
max_charge_current = 0;
else
max_charge_current = (max_charge_current - 100)/100;
max_charge_current &= 0xF;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT2, (uint8_t)max_charge_current);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register "
"0x%02x\n", __func__, CHARGERUSB_CTRLLIMIT2);
return ret;
}
/* Set max voltage limit */
max_charge_volt = min(4760, charger->max_charge_volt_mV);
max_charge_volt = max(3500, max_charge_volt);
max_charge_volt -= 3500;
max_charge_volt = max_charge_volt/20;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT1, (uint8_t)max_charge_volt);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRLLIMIT1);
return ret;
}
/* Lock value */
ret = tps80031_set_bits(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT2, (1 << 4));
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRLLIMIT2);
return ret;
}
/* set Pre Charge current to 400mA */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2, 0xDE, 0x3);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, 0xDD);
return ret;
}
/* set charging termination current*/
if (charger->charging_term_current_mA > 400)
term_current = 7;
else
term_current = (charger->charging_term_current_mA - 50)/50;
term_current = term_current << 5;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRL2, term_current);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRL2);
return ret;
}
return 0;
}
static int __devinit tps80031_rtc_probe(struct platform_device *pdev)
{
struct tps80031_platform_data *tps80031_pdata;
struct tps80031_rtc_platform_data *pdata;
struct tps80031_rtc *rtc;
struct rtc_time tm;
int err;
u8 reg;
tps80031_pdata = dev_get_platdata(pdev->dev.parent);
if (!tps80031_pdata) {
dev_err(&pdev->dev, "no tps80031 platform_data specified\n");
return -EINVAL;
}
pdata = tps80031_pdata->rtc_pdata;
if (!pdata) {
dev_err(&pdev->dev, "no platform_data specified\n");
return -EINVAL;
}
rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
if (!rtc)
return -ENOMEM;
rtc->irq = -1;
if (pdata->irq < 0)
dev_err(&pdev->dev, "no IRQ specified, wakeup is disabled\n");
rtc->msecure_gpio = -1;
if (gpio_is_valid(pdata->msecure_gpio)) {
err = gpio_request(pdata->msecure_gpio, "tps80031 msecure");
if (err == 0) {
rtc->msecure_gpio = pdata->msecure_gpio;
gpio_direction_output(rtc->msecure_gpio, 0);
} else
dev_warn(&pdev->dev, "could not get msecure GPIO\n");
}
rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
&tps80031_rtc_ops, THIS_MODULE);
dev_set_drvdata(&pdev->dev, rtc);
if (IS_ERR(rtc->rtc)) {
err = PTR_ERR(rtc->rtc);
goto fail;
}
if ((int)pdev && (int)&pdev->dev)
err = tps80031_read_regs(&pdev->dev, RTC_STATUS, 1, ®);
else {
dev_err(&pdev->dev, "%s Input params incorrect\n", __func__);
err = -EBUSY;
goto fail;
}
if (err) {
dev_err(&pdev->dev, "%s unable to read status\n", __func__);
err = -EBUSY;
goto fail;
}
/* If RTC have POR values, set time using platform data*/
tps80031_rtc_read_time(&pdev->dev, &tm);
if ((tm.tm_year == RTC_YEAR_OFFSET + RTC_POR_YEAR) &&
(tm.tm_mon == (RTC_POR_MONTH - 1)) &&
(tm.tm_mday == RTC_POR_DAY)) {
if (pdata->time.tm_year < 2000 ||
pdata->time.tm_year > 2100) {
dev_err(&pdev->dev, "Invalid platform data\n");
memset(&pdata->time, 0, sizeof(pdata->time));
pdata->time.tm_year = 2011;
pdata->time.tm_mday = 1;
}
tps80031_rtc_set_time(&pdev->dev, &pdata->time);
}
reg = ALARM_INT_STATUS;
err = tps80031_write_regs(&pdev->dev, RTC_STATUS, 1, ®);
if (err) {
dev_err(&pdev->dev, "unable to program RTC_STATUS reg\n");
return -EBUSY;
}
tps80031_enable_rtc_write(&pdev->dev);
err = tps80031_set_bits(pdev->dev.parent, 1, RTC_INT, ENABLE_ALARM_INT);
tps80031_disable_rtc_write(&pdev->dev);
if (err) {
dev_err(&pdev->dev, "unable to program Interrupt Mask reg\n");
err = -EBUSY;
rtc->alarm_irq_enabled = 0;
goto fail;
} else
rtc->alarm_irq_enabled = 1;
if (pdata && (pdata->irq >= 0)) {
rtc->irq = pdata->irq;
err = request_threaded_irq(pdata->irq, NULL, tps80031_rtc_irq,
IRQF_ONESHOT, "rtc_tps80031",
&pdev->dev);
if (err) {
dev_err(&pdev->dev, "request IRQ:%d fail\n", rtc->irq);
rtc->irq = -1;
} else {
device_init_wakeup(&pdev->dev, 1);
enable_irq_wake(rtc->irq);
}
}
return 0;
fail:
if (!IS_ERR_OR_NULL(rtc->rtc))
rtc_device_unregister(rtc->rtc);
kfree(rtc);
return err;
}
static int tps80031_rtc_probe(struct platform_device *pdev)
{
struct tps80031_rtc *rtc;
struct rtc_time tm;
int ret;
rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
if (!rtc)
return -ENOMEM;
rtc->irq = platform_get_irq(pdev, 0);
platform_set_drvdata(pdev, rtc);
/* Start RTC */
ret = tps80031_set_bits(pdev->dev.parent, TPS80031_SLAVE_ID1,
TPS80031_RTC_CTRL_REG, STOP_RTC);
if (ret < 0) {
dev_err(&pdev->dev, "failed to start RTC. err = %d\n", ret);
return ret;
}
/* If RTC have POR values, set time 01:01:2000 */
tps80031_rtc_read_time(&pdev->dev, &tm);
if ((tm.tm_year == RTC_YEAR_OFFSET + TPS80031_RTC_POR_YEAR) &&
(tm.tm_mon == (TPS80031_RTC_POR_MONTH - 1)) &&
(tm.tm_mday == TPS80031_RTC_POR_DAY)) {
tm.tm_year = 2000;
tm.tm_mday = 1;
tm.tm_mon = 1;
ret = tps80031_rtc_set_time(&pdev->dev, &tm);
if (ret < 0) {
dev_err(&pdev->dev,
"RTC set time failed, err = %d\n", ret);
return ret;
}
}
/* Clear alarm intretupt status if it is there */
ret = clear_alarm_int_status(&pdev->dev, rtc);
if (ret < 0) {
dev_err(&pdev->dev, "Clear alarm int failed, err = %d\n", ret);
return ret;
}
rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
&tps80031_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc->rtc)) {
ret = PTR_ERR(rtc->rtc);
dev_err(&pdev->dev, "RTC registration failed, err %d\n", ret);
return ret;
}
ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
tps80031_rtc_irq,
IRQF_ONESHOT | IRQF_EARLY_RESUME,
dev_name(&pdev->dev), rtc);
if (ret < 0) {
dev_err(&pdev->dev, "request IRQ:%d failed, err = %d\n",
rtc->irq, ret);
rtc_device_unregister(rtc->rtc);
return ret;
}
device_set_wakeup_capable(&pdev->dev, 1);
return 0;
}
/*ZTE:add by caixiaoguang 20120531 for charge--*/
static int configure_charging_parameter(struct tps80031_charger *charger)
{
int ret;
int max_charge_current;
int max_charge_volt;
int term_current;
uint8_t chargerusb_vichrg_reg;
uint8_t chargerusb_int__mask_reg;
int vbus_preset = -1;
int chargertype = -1;
/* Disable watchdog timer */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CONTROLLER_WDG, 0x0);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CONTROLLER_WDG);
return ret;
}
/* Disable the charging if any */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CONTROLLER_CTRL1, 0x0);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CONTROLLER_CTRL1);
return ret;
}
if (charger->board_init) {
ret = charger->board_init(charger->board_data);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in board init\n",
__func__);
return ret;
}
}
/* Unlock value */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT2, 0);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRLLIMIT2);
return ret;
}
/* Set max current limit */
#if 0
max_charge_current = min(1500, charger->max_charge_current_mA);
if (max_charge_current < 100)
max_charge_current = 0;
else
max_charge_current = (max_charge_current - 100)/100;
max_charge_current &= 0xF;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT2, (uint8_t)max_charge_current);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register "
"0x%02x\n", __func__, CHARGERUSB_CTRLLIMIT2);
return ret;
}
#endif
/* Set max voltage limit */
max_charge_volt = min(4760, charger->max_charge_volt_mV);
max_charge_volt = max(3500, max_charge_volt);
max_charge_volt -= 3500;
max_charge_volt = max_charge_volt/20;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT1, (uint8_t)max_charge_volt);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRLLIMIT1);
return ret;
}
#if 0
/* Lock value */
ret = tps80031_set_bits(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRLLIMIT2, (1 << 4));
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRLLIMIT2);
return ret;
}
#endif
/* set Pre Charge current to 400mA */
ret = tps80031_write(charger->dev->parent, SLAVE_ID2, 0xDE, 0x3);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, 0xDD);
return ret;
}
/* set charging termination current*/
if (charger->charging_term_current_mA > 400)
term_current = 7;
else
term_current = (charger->charging_term_current_mA - 50)/50;
term_current = term_current << 5;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CTRL2, term_current);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CTRL2);
return ret;
}
/*ZTE:add by caixiaoguang 20120531 for charge++*/
#if 0
vbus_preset = tps80031_get_vbus_status();
chargertype = fsl_charger_detect();
if(1 == vbus_preset)
{
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CONTROLLER_CTRL1, 0x30);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CONTROLLER_CTRL1);
return ret;
}
//AC set CINLIMIT 1000mA,USB set 500mA
if(1==chargertype)
{
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CINLIMIT, 0x29);
}
else
{
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
CHARGERUSB_CINLIMIT, 0x09);
}
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, CHARGERUSB_CINLIMIT);
return ret;
}
}
#endif
//mask CHARGERUSB_STAT interrupt in CHARGERUSB_INT
ret = tps80031_read(charger->dev->parent, SLAVE_ID2,
0xE5, &chargerusb_int__mask_reg);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in reading register 0x%02x\n",
__func__, 0xE5);
}
chargerusb_int__mask_reg |= 0x1E;
ret = tps80031_write(charger->dev->parent, SLAVE_ID2,
0xE5, chargerusb_int__mask_reg);
if (ret < 0) {
dev_err(charger->dev, "%s(): Failed in writing register 0x%02x\n",
__func__, 0xE5);
return ret;
}
return 0;
}