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-rw-r--r--drivers/power/ab8500_charger.c105
-rw-r--r--drivers/power/abx500_chargalg.c33
-rw-r--r--include/linux/mfd/abx500/ux500_chargalg.h1
3 files changed, 137 insertions, 2 deletions
diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index dcd3c6feca97..3eb23cf9ff47 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -52,6 +52,7 @@
#define VBUS_DET_DBNC100 0x02
#define VBUS_DET_DBNC1 0x01
#define OTP_ENABLE_WD 0x01
+#define DROP_COUNT_RESET 0x01
#define MAIN_CH_INPUT_CURR_SHIFT 4
#define VBUS_IN_CURR_LIM_SHIFT 4
@@ -1678,6 +1679,105 @@ static int ab8500_charger_usb_en(struct ux500_charger *charger,
}
/**
+ * ab8500_charger_usb_check_enable() - enable usb charging
+ * @charger: pointer to the ux500_charger structure
+ * @vset: charging voltage
+ * @iset: charger output current
+ *
+ * Check if the VBUS charger has been disconnected and reconnected without
+ * AB8500 rising an interrupt. Returns 0 on success.
+ */
+static int ab8500_charger_usb_check_enable(struct ux500_charger *charger,
+ int vset, int iset)
+{
+ u8 usbch_ctrl1 = 0;
+ int ret = 0;
+
+ struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger);
+
+ if (!di->usb.charger_connected)
+ return ret;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_USBCH_CTRL1_REG, &usbch_ctrl1);
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 read failed %d\n", __LINE__);
+ return ret;
+ }
+ dev_dbg(di->dev, "USB charger ctrl: 0x%02x\n", usbch_ctrl1);
+
+ if (!(usbch_ctrl1 & USB_CH_ENA)) {
+ dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n");
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CHARGER_CTRL,
+ DROP_COUNT_RESET, DROP_COUNT_RESET);
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 write failed %d\n", __LINE__);
+ return ret;
+ }
+
+ ret = ab8500_charger_usb_en(&di->usb_chg, true, vset, iset);
+ if (ret < 0) {
+ dev_err(di->dev, "Failed to enable VBUS charger %d\n",
+ __LINE__);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+/**
+ * ab8500_charger_ac_check_enable() - enable usb charging
+ * @charger: pointer to the ux500_charger structure
+ * @vset: charging voltage
+ * @iset: charger output current
+ *
+ * Check if the AC charger has been disconnected and reconnected without
+ * AB8500 rising an interrupt. Returns 0 on success.
+ */
+static int ab8500_charger_ac_check_enable(struct ux500_charger *charger,
+ int vset, int iset)
+{
+ u8 mainch_ctrl1 = 0;
+ int ret = 0;
+
+ struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger);
+
+ if (!di->ac.charger_connected)
+ return ret;
+
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_MCH_CTRL1, &mainch_ctrl1);
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 read failed %d\n", __LINE__);
+ return ret;
+ }
+ dev_dbg(di->dev, "AC charger ctrl: 0x%02x\n", mainch_ctrl1);
+
+ if (!(mainch_ctrl1 & MAIN_CH_ENA)) {
+ dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n");
+
+ ret = abx500_mask_and_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CHARGER_CTRL,
+ DROP_COUNT_RESET, DROP_COUNT_RESET);
+
+ if (ret < 0) {
+ dev_err(di->dev, "ab8500 write failed %d\n", __LINE__);
+ return ret;
+ }
+
+ ret = ab8500_charger_ac_en(&di->usb_chg, true, vset, iset);
+ if (ret < 0) {
+ dev_err(di->dev, "failed to enable AC charger %d\n",
+ __LINE__);
+ return ret;
+ }
+ }
+ return ret;
+}
+
+/**
* ab8500_charger_watchdog_kick() - kick charger watchdog
* @di: pointer to the ab8500_charger structure
*
@@ -1734,8 +1834,7 @@ static int ab8500_charger_update_charger_current(struct ux500_charger *charger,
/* Reset the main and usb drop input current measurement counter */
ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
- AB8500_CHARGER_CTRL,
- 0x1);
+ AB8500_CHARGER_CTRL, DROP_COUNT_RESET);
if (ret) {
dev_err(di->dev, "%s write failed\n", __func__);
return ret;
@@ -3221,6 +3320,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
di->ac_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
/* ux500_charger sub-class */
di->ac_chg.ops.enable = &ab8500_charger_ac_en;
+ di->ac_chg.ops.check_enable = &ab8500_charger_ac_check_enable;
di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current;
di->ac_chg.max_out_volt = ab8500_charger_voltage_map[
@@ -3242,6 +3342,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
di->usb_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
/* ux500_charger sub-class */
di->usb_chg.ops.enable = &ab8500_charger_usb_en;
+ di->usb_chg.ops.check_enable = &ab8500_charger_usb_check_enable;
di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current;
di->usb_chg.max_out_volt = ab8500_charger_voltage_map[
diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c
index 31507bfe549c..8ab65a3a8190 100644
--- a/drivers/power/abx500_chargalg.c
+++ b/drivers/power/abx500_chargalg.c
@@ -305,6 +305,30 @@ static void abx500_chargalg_state_to(struct abx500_chargalg *di,
di->charge_state = state;
}
+static int abx500_chargalg_check_charger_enable(struct abx500_chargalg *di)
+{
+ switch (di->charge_state) {
+ case STATE_NORMAL:
+ case STATE_MAINTENANCE_A:
+ case STATE_MAINTENANCE_B:
+ break;
+ default:
+ return 0;
+ }
+
+ if (di->chg_info.charger_type & USB_CHG) {
+ return di->usb_chg->ops.check_enable(di->usb_chg,
+ di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
+ di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+ } else if ((di->chg_info.charger_type & AC_CHG) &&
+ !(di->ac_chg->external)) {
+ return di->ac_chg->ops.check_enable(di->ac_chg,
+ di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
+ di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+ }
+ return 0;
+}
+
/**
* abx500_chargalg_check_charger_connection() - Check charger connection change
* @di: pointer to the abx500_chargalg structure
@@ -1219,6 +1243,7 @@ static void abx500_chargalg_external_power_changed(struct power_supply *psy)
static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
{
int charger_status;
+ int ret;
/* Collect data from all power_supply class devices */
class_for_each_device(power_supply_class, NULL,
@@ -1229,6 +1254,14 @@ static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
abx500_chargalg_check_charger_voltage(di);
charger_status = abx500_chargalg_check_charger_connection(di);
+
+ if (is_ab8500(di->parent)) {
+ ret = abx500_chargalg_check_charger_enable(di);
+ if (ret < 0)
+ dev_err(di->dev, "Checking charger is enabled error"
+ ": Returned Value %d\n", ret);
+ }
+
/*
* First check if we have a charger connected.
* Also we don't allow charging of unknown batteries if configured
diff --git a/include/linux/mfd/abx500/ux500_chargalg.h b/include/linux/mfd/abx500/ux500_chargalg.h
index d43ac0f35526..110d12f09548 100644
--- a/include/linux/mfd/abx500/ux500_chargalg.h
+++ b/include/linux/mfd/abx500/ux500_chargalg.h
@@ -17,6 +17,7 @@ struct ux500_charger;
struct ux500_charger_ops {
int (*enable) (struct ux500_charger *, int, int, int);
+ int (*check_enable) (struct ux500_charger *, int, int);
int (*kick_wd) (struct ux500_charger *);
int (*update_curr) (struct ux500_charger *, int);
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 20:05:51 +0000