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path: root/drivers/power/supply/bq24190_charger.c
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Diffstat (limited to 'drivers/power/supply/bq24190_charger.c')
-rw-r--r--drivers/power/supply/bq24190_charger.c126
1 files changed, 12 insertions, 114 deletions
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index 35ff406..b58df04 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -11,7 +11,6 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
-#include <linux/extcon.h>
#include <linux/of_irq.h>
#include <linux/of_device.h>
#include <linux/pm_runtime.h>
@@ -162,9 +161,6 @@ struct bq24190_dev_info {
struct device *dev;
struct power_supply *charger;
struct power_supply *battery;
- struct extcon_dev *extcon;
- struct notifier_block extcon_nb;
- struct delayed_work extcon_work;
struct delayed_work input_current_limit_work;
char model_name[I2C_NAME_SIZE];
bool initialized;
@@ -686,6 +682,16 @@ static int bq24190_register_reset(struct bq24190_dev_info *bdi)
int ret, limit = 100;
u8 v;
+ /*
+ * This prop. can be passed on device instantiation from platform code:
+ * struct property_entry pe[] =
+ * { PROPERTY_ENTRY_BOOL("disable-reset"), ... };
+ * struct i2c_board_info bi =
+ * { .type = "bq24190", .addr = 0x6b, .properties = pe, .irq = irq };
+ * struct i2c_adapter ad = { ... };
+ * i2c_add_adapter(&ad);
+ * i2c_new_device(&ad, &bi);
+ */
if (device_property_read_bool(bdi->dev, "disable-reset"))
return 0;
@@ -1193,8 +1199,6 @@ static int bq24190_charger_set_property(struct power_supply *psy,
static int bq24190_charger_property_is_writeable(struct power_supply *psy,
enum power_supply_property psp)
{
- int ret;
-
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
@@ -1202,13 +1206,10 @@ static int bq24190_charger_property_is_writeable(struct power_supply *psy,
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
- ret = 1;
- break;
+ return 1;
default:
- ret = 0;
+ return 0;
}
-
- return ret;
}
static void bq24190_input_current_limit_work(struct work_struct *work)
@@ -1623,75 +1624,6 @@ static irqreturn_t bq24190_irq_handler_thread(int irq, void *data)
return IRQ_HANDLED;
}
-static void bq24190_extcon_work(struct work_struct *work)
-{
- struct bq24190_dev_info *bdi =
- container_of(work, struct bq24190_dev_info, extcon_work.work);
- int error, iinlim = 0;
- u8 v;
-
- error = pm_runtime_get_sync(bdi->dev);
- if (error < 0) {
- dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);
- pm_runtime_put_noidle(bdi->dev);
- return;
- }
-
- if (extcon_get_state(bdi->extcon, EXTCON_CHG_USB_SDP) == 1)
- iinlim = 500000;
- else if (extcon_get_state(bdi->extcon, EXTCON_CHG_USB_CDP) == 1 ||
- extcon_get_state(bdi->extcon, EXTCON_CHG_USB_ACA) == 1)
- iinlim = 1500000;
- else if (extcon_get_state(bdi->extcon, EXTCON_CHG_USB_DCP) == 1)
- iinlim = 2000000;
-
- if (iinlim) {
- error = bq24190_set_field_val(bdi, BQ24190_REG_ISC,
- BQ24190_REG_ISC_IINLIM_MASK,
- BQ24190_REG_ISC_IINLIM_SHIFT,
- bq24190_isc_iinlim_values,
- ARRAY_SIZE(bq24190_isc_iinlim_values),
- iinlim);
- if (error < 0)
- dev_err(bdi->dev, "Can't set IINLIM: %d\n", error);
- }
-
- /* if no charger found and in USB host mode, set OTG 5V boost, else normal */
- if (!iinlim && extcon_get_state(bdi->extcon, EXTCON_USB_HOST) == 1)
- v = BQ24190_REG_POC_CHG_CONFIG_OTG;
- else
- v = BQ24190_REG_POC_CHG_CONFIG_CHARGE;
-
- error = bq24190_write_mask(bdi, BQ24190_REG_POC,
- BQ24190_REG_POC_CHG_CONFIG_MASK,
- BQ24190_REG_POC_CHG_CONFIG_SHIFT,
- v);
- if (error < 0)
- dev_err(bdi->dev, "Can't set CHG_CONFIG: %d\n", error);
-
- pm_runtime_mark_last_busy(bdi->dev);
- pm_runtime_put_autosuspend(bdi->dev);
-}
-
-static int bq24190_extcon_event(struct notifier_block *nb, unsigned long event,
- void *param)
-{
- struct bq24190_dev_info *bdi =
- container_of(nb, struct bq24190_dev_info, extcon_nb);
-
- /*
- * The Power-Good detection may take up to 220ms, sometimes
- * the external charger detection is quicker, and the bq24190 will
- * reset to iinlim based on its own charger detection (which is not
- * hooked up when using external charger detection) resulting in
- * a too low default 500mA iinlim. Delay applying the extcon value
- * for 300ms to avoid this.
- */
- queue_delayed_work(system_wq, &bdi->extcon_work, msecs_to_jiffies(300));
-
- return NOTIFY_OK;
-}
-
static int bq24190_hw_init(struct bq24190_dev_info *bdi)
{
u8 v;
@@ -1766,7 +1698,6 @@ static int bq24190_probe(struct i2c_client *client,
struct device *dev = &client->dev;
struct power_supply_config charger_cfg = {}, battery_cfg = {};
struct bq24190_dev_info *bdi;
- const char *name;
int ret;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
@@ -1796,25 +1727,6 @@ static int bq24190_probe(struct i2c_client *client,
return -EINVAL;
}
- /*
- * Devicetree platforms should get extcon via phandle (not yet supported).
- * On ACPI platforms, extcon clients may invoke us with:
- * struct property_entry pe[] =
- * { PROPERTY_ENTRY_STRING("extcon-name", client_name), ... };
- * struct i2c_board_info bi =
- * { .type = "bq24190", .addr = 0x6b, .properties = pe, .irq = irq };
- * struct i2c_adapter ad = { ... };
- * i2c_add_adapter(&ad);
- * i2c_new_device(&ad, &bi);
- */
- if (device_property_read_string(dev, "extcon-name", &name) == 0) {
- bdi->extcon = extcon_get_extcon_dev(name);
- if (!bdi->extcon)
- return -EPROBE_DEFER;
-
- dev_info(bdi->dev, "using extcon device %s\n", name);
- }
-
pm_runtime_enable(dev);
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, 600);
@@ -1882,20 +1794,6 @@ static int bq24190_probe(struct i2c_client *client,
if (ret < 0)
goto out_sysfs;
- if (bdi->extcon) {
- INIT_DELAYED_WORK(&bdi->extcon_work, bq24190_extcon_work);
- bdi->extcon_nb.notifier_call = bq24190_extcon_event;
- ret = devm_extcon_register_notifier_all(dev, bdi->extcon,
- &bdi->extcon_nb);
- if (ret) {
- dev_err(dev, "Can't register extcon\n");
- goto out_sysfs;
- }
-
- /* Sync initial cable state */
- queue_delayed_work(system_wq, &bdi->extcon_work, 0);
- }
-
enable_irq_wake(client->irq);
pm_runtime_mark_last_busy(dev);
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