aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/power/max8925_power.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/power/max8925_power.c')
-rw-r--r--drivers/power/max8925_power.c75
1 files changed, 38 insertions, 37 deletions
diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
index a70e16d3a3dc..daa333bd7ebb 100644
--- a/drivers/power/max8925_power.c
+++ b/drivers/power/max8925_power.c
@@ -78,6 +78,8 @@ struct max8925_power_info {
unsigned batt_detect:1; /* detecing MB by ID pin */
unsigned topoff_threshold:2;
unsigned fast_charge:3;
+ unsigned no_temp_support:1;
+ unsigned no_insert_detect:1;
int (*set_charger) (int);
};
@@ -116,17 +118,7 @@ static irqreturn_t max8925_charger_handler(int irq, void *data)
case MAX8925_IRQ_VCHG_DC_F:
info->ac_online = 0;
__set_charger(info, 0);
- dev_dbg(chip->dev, "Adapter is removal\n");
- break;
- case MAX8925_IRQ_VCHG_USB_R:
- info->usb_online = 1;
- __set_charger(info, 1);
- dev_dbg(chip->dev, "USB inserted\n");
- break;
- case MAX8925_IRQ_VCHG_USB_F:
- info->usb_online = 0;
- __set_charger(info, 0);
- dev_dbg(chip->dev, "USB is removal\n");
+ dev_dbg(chip->dev, "Adapter removed\n");
break;
case MAX8925_IRQ_VCHG_THM_OK_F:
/* Battery is not ready yet */
@@ -168,27 +160,33 @@ static irqreturn_t max8925_charger_handler(int irq, void *data)
static int start_measure(struct max8925_power_info *info, int type)
{
unsigned char buf[2] = {0, 0};
+ int meas_cmd;
int meas_reg = 0, ret;
switch (type) {
case MEASURE_VCHG:
+ meas_cmd = MAX8925_CMD_VCHG;
meas_reg = MAX8925_ADC_VCHG;
break;
case MEASURE_VBBATT:
+ meas_cmd = MAX8925_CMD_VBBATT;
meas_reg = MAX8925_ADC_VBBATT;
break;
case MEASURE_VMBATT:
+ meas_cmd = MAX8925_CMD_VMBATT;
meas_reg = MAX8925_ADC_VMBATT;
break;
case MEASURE_ISNS:
+ meas_cmd = MAX8925_CMD_ISNS;
meas_reg = MAX8925_ADC_ISNS;
break;
default:
return -EINVAL;
}
+ max8925_reg_write(info->adc, meas_cmd, 0);
max8925_bulk_read(info->adc, meas_reg, 2, buf);
- ret = (buf[0] << 4) | (buf[1] >> 4);
+ ret = ((buf[0]<<8) | buf[1]) >> 4;
return ret;
}
@@ -208,7 +206,7 @@ static int max8925_ac_get_prop(struct power_supply *psy,
if (info->ac_online) {
ret = start_measure(info, MEASURE_VCHG);
if (ret >= 0) {
- val->intval = ret << 1; /* unit is mV */
+ val->intval = ret * 2000; /* unit is uV */
goto out;
}
}
@@ -242,7 +240,7 @@ static int max8925_usb_get_prop(struct power_supply *psy,
if (info->usb_online) {
ret = start_measure(info, MEASURE_VCHG);
if (ret >= 0) {
- val->intval = ret << 1; /* unit is mV */
+ val->intval = ret * 2000; /* unit is uV */
goto out;
}
}
@@ -266,7 +264,6 @@ static int max8925_bat_get_prop(struct power_supply *psy,
union power_supply_propval *val)
{
struct max8925_power_info *info = dev_get_drvdata(psy->dev->parent);
- long long int tmp = 0;
int ret = 0;
switch (psp) {
@@ -277,7 +274,7 @@ static int max8925_bat_get_prop(struct power_supply *psy,
if (info->bat_online) {
ret = start_measure(info, MEASURE_VMBATT);
if (ret >= 0) {
- val->intval = ret << 1; /* unit is mV */
+ val->intval = ret * 2000; /* unit is uV */
ret = 0;
break;
}
@@ -288,8 +285,8 @@ static int max8925_bat_get_prop(struct power_supply *psy,
if (info->bat_online) {
ret = start_measure(info, MEASURE_ISNS);
if (ret >= 0) {
- tmp = (long long int)ret * 6250 / 4096 - 3125;
- ret = (int)tmp;
+ /* assume r_sns is 0.02 */
+ ret = ((ret * 6250) - 3125) /* uA */;
val->intval = 0;
if (ret > 0)
val->intval = ret; /* unit is mA */
@@ -365,13 +362,14 @@ static __devinit int max8925_init_charger(struct max8925_chip *chip,
int ret;
REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_OVP, "ac-ovp");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_F, "ac-remove");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_R, "ac-insert");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_USB_OVP, "usb-ovp");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_USB_F, "usb-remove");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_USB_R, "usb-insert");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_R, "batt-temp-in-range");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_F, "batt-temp-out-range");
+ if (!info->no_insert_detect) {
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_F, "ac-remove");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_R, "ac-insert");
+ }
+ if (!info->no_temp_support) {
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_R, "batt-temp-in-range");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_F, "batt-temp-out-range");
+ }
REQUEST_IRQ(MAX8925_IRQ_VCHG_SYSLOW_F, "vsys-high");
REQUEST_IRQ(MAX8925_IRQ_VCHG_SYSLOW_R, "vsys-low");
REQUEST_IRQ(MAX8925_IRQ_VCHG_RST, "charger-reset");
@@ -379,9 +377,15 @@ static __devinit int max8925_init_charger(struct max8925_chip *chip,
REQUEST_IRQ(MAX8925_IRQ_VCHG_TOPOFF, "charger-topoff");
REQUEST_IRQ(MAX8925_IRQ_VCHG_TMR_FAULT, "charger-timer-expire");
- info->ac_online = 0;
info->usb_online = 0;
info->bat_online = 0;
+
+ /* check for power - can miss interrupt at boot time */
+ if (start_measure(info, MEASURE_VCHG) * 2000 > 500000)
+ info->ac_online = 1;
+ else
+ info->ac_online = 0;
+
ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
if (ret >= 0) {
/*
@@ -449,6 +453,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev)
info->ac.properties = max8925_ac_props;
info->ac.num_properties = ARRAY_SIZE(max8925_ac_props);
info->ac.get_property = max8925_ac_get_prop;
+ info->ac.supplied_to = pdata->supplied_to;
+ info->ac.num_supplicants = pdata->num_supplicants;
ret = power_supply_register(&pdev->dev, &info->ac);
if (ret)
goto out;
@@ -459,6 +465,9 @@ static __devinit int max8925_power_probe(struct platform_device *pdev)
info->usb.properties = max8925_usb_props;
info->usb.num_properties = ARRAY_SIZE(max8925_usb_props);
info->usb.get_property = max8925_usb_get_prop;
+ info->usb.supplied_to = pdata->supplied_to;
+ info->usb.num_supplicants = pdata->num_supplicants;
+
ret = power_supply_register(&pdev->dev, &info->usb);
if (ret)
goto out_usb;
@@ -478,6 +487,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev)
info->topoff_threshold = pdata->topoff_threshold;
info->fast_charge = pdata->fast_charge;
info->set_charger = pdata->set_charger;
+ info->no_temp_support = pdata->no_temp_support;
+ info->no_insert_detect = pdata->no_insert_detect;
max8925_init_charger(chip, info);
return 0;
@@ -512,17 +523,7 @@ static struct platform_driver max8925_power_driver = {
},
};
-static int __init max8925_power_init(void)
-{
- return platform_driver_register(&max8925_power_driver);
-}
-module_init(max8925_power_init);
-
-static void __exit max8925_power_exit(void)
-{
- platform_driver_unregister(&max8925_power_driver);
-}
-module_exit(max8925_power_exit);
+module_platform_driver(max8925_power_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Power supply driver for MAX8925");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.