static irqreturn_t tps65090_charger_isr(int irq, void *dev_id)
{
struct tps65090_charger *charger = dev_id;
int ret;
uint8_t status1 = 0;
uint8_t intrsts = 0;
ret = tps65090_read(charger->dev->parent, TPS65090_REG_CG_STATUS1,
&status1);
if (ret < 0) {
dev_err(charger->dev, "%s(): Error in reading reg 0x%x\n",
__func__, TPS65090_REG_CG_STATUS1);
return IRQ_HANDLED;
}
msleep(75);
ret = tps65090_read(charger->dev->parent, TPS65090_REG_INTR_STS,
&intrsts);
if (ret < 0) {
dev_err(charger->dev, "%s(): Error in reading reg 0x%x\n",
__func__, TPS65090_REG_INTR_STS);
return IRQ_HANDLED;
}
if (intrsts & TPS65090_VACG) {
ret = tps65090_enable_charging(charger);
if (ret < 0)
return IRQ_HANDLED;
charger->ac_online = 1;
} else {
charger->ac_online = 0;
}
/* Clear interrupts. */
if (!charger->passive_mode) {
ret = tps65090_write(charger->dev->parent,
TPS65090_REG_INTR_STS, 0x00);
if (ret < 0) {
dev_err(charger->dev,
"%s(): Error in writing reg 0x%x\n",
__func__, TPS65090_REG_INTR_STS);
}
}
if (charger->prev_ac_online != charger->ac_online)
power_supply_changed(&charger->ac);
return IRQ_HANDLED;
}
static int tps65090_config_charger(struct tps65090_charger *charger)
{
uint8_t intrmask = 0;
int ret;
if (charger->pdata->enable_low_current_chrg) {
ret = tps65090_low_chrg_current(charger);
if (ret < 0) {
dev_err(charger->dev,
"error configuring low charge current\n");
return ret;
}
}
/* Enable the VACG interrupt for AC power detect */
ret = tps65090_read(charger->dev->parent, TPS65090_REG_INTR_MASK,
&intrmask);
if (ret < 0) {
dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
__func__, TPS65090_REG_INTR_MASK);
return ret;
}
ret = tps65090_write(charger->dev->parent, TPS65090_REG_INTR_MASK,
(intrmask | TPS65090_VACG));
if (ret < 0) {
dev_err(charger->dev, "%s(): error writing in register 0x%x\n",
__func__, TPS65090_REG_CG_CTRL0);
return ret;
}
return 0;
}
static int tps65090_enable_charging(struct tps65090_charger *charger)
{
int ret;
uint8_t ctrl0 = 0;
if (charger->passive_mode)
return 0;
ret = tps65090_read(charger->dev->parent, TPS65090_REG_CG_CTRL0,
&ctrl0);
if (ret < 0) {
dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
__func__, TPS65090_REG_CG_CTRL0);
return ret;
}
ret = tps65090_write(charger->dev->parent, TPS65090_REG_CG_CTRL0,
(ctrl0 | TPS65090_CHARGER_ENABLE));
if (ret < 0) {
dev_err(charger->dev, "%s(): error writing in register 0x%x\n",
__func__, TPS65090_REG_CG_CTRL0);
return ret;
}
return 0;
}
static int tps65090_charger_probe(struct platform_device *pdev)
{
struct tps65090_charger *cdata;
struct tps65090_platform_data *pdata;
uint8_t status1 = 0;
int ret;
int irq;
pdata = dev_get_platdata(pdev->dev.parent);
if (IS_ENABLED(CONFIG_OF) && !pdata && pdev->dev.of_node)
pdata = tps65090_parse_dt_charger_data(pdev);
if (!pdata) {
dev_err(&pdev->dev, "%s():no platform data available\n",
__func__);
return -ENODEV;
}
cdata = devm_kzalloc(&pdev->dev, sizeof(*cdata), GFP_KERNEL);
if (!cdata) {
dev_err(&pdev->dev, "failed to allocate memory status\n");
return -ENOMEM;
}
platform_set_drvdata(pdev, cdata);
cdata->dev = &pdev->dev;
cdata->pdata = pdata;
cdata->ac.name = "tps65090-ac";
cdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
cdata->ac.get_property = tps65090_ac_get_property;
cdata->ac.properties = tps65090_ac_props;
cdata->ac.num_properties = ARRAY_SIZE(tps65090_ac_props);
cdata->ac.supplied_to = pdata->supplied_to;
cdata->ac.num_supplicants = pdata->num_supplicants;
cdata->ac.of_node = pdev->dev.of_node;
ret = power_supply_register(&pdev->dev, &cdata->ac);
if (ret) {
dev_err(&pdev->dev, "failed: power supply register\n");
return ret;
}
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_warn(&pdev->dev, "Unable to get charger irq = %d\n", irq);
ret = irq;
goto fail_unregister_supply;
}
cdata->irq = irq;
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
tps65090_charger_isr, 0, "tps65090-charger", cdata);
if (ret) {
dev_err(cdata->dev, "Unable to register irq %d err %d\n", irq,
ret);
goto fail_unregister_supply;
}
ret = tps65090_config_charger(cdata);
if (ret < 0) {
dev_err(&pdev->dev, "charger config failed, err %d\n", ret);
goto fail_unregister_supply;
}
/* Check for charger presence */
ret = tps65090_read(cdata->dev->parent, TPS65090_REG_CG_STATUS1,
&status1);
if (ret < 0) {
dev_err(cdata->dev, "%s(): Error in reading reg 0x%x", __func__,
TPS65090_REG_CG_STATUS1);
goto fail_unregister_supply;
}
if (status1 != 0) {
ret = tps65090_enable_charging(cdata);
if (ret < 0) {
dev_err(cdata->dev, "error enabling charger\n");
goto fail_unregister_supply;
}
cdata->ac_online = 1;
power_supply_changed(&cdata->ac);
}
return 0;
fail_unregister_supply:
power_supply_unregister(&cdata->ac);
return ret;
}
