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path: root/drivers/power/bq2415x_charger.c
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Diffstat (limited to 'drivers/power/bq2415x_charger.c')
-rw-r--r--drivers/power/bq2415x_charger.c143
1 files changed, 79 insertions, 64 deletions
diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
index e98dcb661..ec212b5be 100644
--- a/drivers/power/bq2415x_charger.c
+++ b/drivers/power/bq2415x_charger.c
@@ -170,7 +170,7 @@ struct bq2415x_device {
struct power_supply *charger;
struct power_supply_desc charger_desc;
struct delayed_work work;
- struct power_supply *notify_psy;
+ struct device_node *notify_node;
struct notifier_block nb;
enum bq2415x_mode reported_mode;/* mode reported by hook function */
enum bq2415x_mode mode; /* currently configured mode */
@@ -792,22 +792,47 @@ static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode)
}
+static bool bq2415x_update_reported_mode(struct bq2415x_device *bq, int mA)
+{
+ enum bq2415x_mode mode;
+
+ if (mA == 0)
+ mode = BQ2415X_MODE_OFF;
+ else if (mA < 500)
+ mode = BQ2415X_MODE_NONE;
+ else if (mA < 1800)
+ mode = BQ2415X_MODE_HOST_CHARGER;
+ else
+ mode = BQ2415X_MODE_DEDICATED_CHARGER;
+
+ if (bq->reported_mode == mode)
+ return false;
+
+ bq->reported_mode = mode;
+ return true;
+}
+
static int bq2415x_notifier_call(struct notifier_block *nb,
unsigned long val, void *v)
{
struct bq2415x_device *bq =
container_of(nb, struct bq2415x_device, nb);
struct power_supply *psy = v;
- enum bq2415x_mode mode;
union power_supply_propval prop;
int ret;
- int mA;
if (val != PSY_EVENT_PROP_CHANGED)
return NOTIFY_OK;
- if (psy != bq->notify_psy)
- return NOTIFY_OK;
+ /* Ignore event if it was not send by notify_node/notify_device */
+ if (bq->notify_node) {
+ if (!psy->dev.parent ||
+ psy->dev.parent->of_node != bq->notify_node)
+ return NOTIFY_OK;
+ } else if (bq->init_data.notify_device) {
+ if (strcmp(psy->desc->name, bq->init_data.notify_device) != 0)
+ return NOTIFY_OK;
+ }
dev_dbg(bq->dev, "notifier call was called\n");
@@ -816,22 +841,9 @@ static int bq2415x_notifier_call(struct notifier_block *nb,
if (ret != 0)
return NOTIFY_OK;
- mA = prop.intval;
-
- if (mA == 0)
- mode = BQ2415X_MODE_OFF;
- else if (mA < 500)
- mode = BQ2415X_MODE_NONE;
- else if (mA < 1800)
- mode = BQ2415X_MODE_HOST_CHARGER;
- else
- mode = BQ2415X_MODE_DEDICATED_CHARGER;
-
- if (bq->reported_mode == mode)
+ if (!bq2415x_update_reported_mode(bq, prop.intval))
return NOTIFY_OK;
- bq->reported_mode = mode;
-
/* if automode is not enabled do not tell about reported_mode */
if (bq->automode < 1)
return NOTIFY_OK;
@@ -1536,6 +1548,8 @@ static int bq2415x_probe(struct i2c_client *client,
struct device_node *np = client->dev.of_node;
struct bq2415x_platform_data *pdata = client->dev.platform_data;
const struct acpi_device_id *acpi_id = NULL;
+ struct power_supply *notify_psy = NULL;
+ union power_supply_propval prop;
if (!np && !pdata && !ACPI_HANDLE(&client->dev)) {
dev_err(&client->dev, "Neither devicetree, nor platform data, nor ACPI support\n");
@@ -1569,25 +1583,6 @@ static int bq2415x_probe(struct i2c_client *client,
goto error_2;
}
- if (np) {
- bq->notify_psy = power_supply_get_by_phandle(np,
- "ti,usb-charger-detection");
-
- if (IS_ERR(bq->notify_psy)) {
- dev_info(&client->dev,
- "no 'ti,usb-charger-detection' property (err=%ld)\n",
- PTR_ERR(bq->notify_psy));
- bq->notify_psy = NULL;
- } else if (!bq->notify_psy) {
- ret = -EPROBE_DEFER;
- goto error_2;
- }
- } else if (pdata && pdata->notify_device) {
- bq->notify_psy = power_supply_get_by_name(pdata->notify_device);
- } else {
- bq->notify_psy = NULL;
- }
-
i2c_set_clientdata(client, bq);
bq->id = num;
@@ -1607,32 +1602,35 @@ static int bq2415x_probe(struct i2c_client *client,
"ti,current-limit",
&bq->init_data.current_limit);
if (ret)
- goto error_3;
+ goto error_2;
ret = device_property_read_u32(bq->dev,
"ti,weak-battery-voltage",
&bq->init_data.weak_battery_voltage);
if (ret)
- goto error_3;
+ goto error_2;
ret = device_property_read_u32(bq->dev,
"ti,battery-regulation-voltage",
&bq->init_data.battery_regulation_voltage);
if (ret)
- goto error_3;
+ goto error_2;
ret = device_property_read_u32(bq->dev,
"ti,charge-current",
&bq->init_data.charge_current);
if (ret)
- goto error_3;
+ goto error_2;
ret = device_property_read_u32(bq->dev,
"ti,termination-current",
&bq->init_data.termination_current);
if (ret)
- goto error_3;
+ goto error_2;
ret = device_property_read_u32(bq->dev,
"ti,resistor-sense",
&bq->init_data.resistor_sense);
if (ret)
- goto error_3;
+ goto error_2;
+ if (np)
+ bq->notify_node = of_parse_phandle(np,
+ "ti,usb-charger-detection", 0);
} else {
memcpy(&bq->init_data, pdata, sizeof(bq->init_data));
}
@@ -1642,56 +1640,72 @@ static int bq2415x_probe(struct i2c_client *client,
ret = bq2415x_power_supply_init(bq);
if (ret) {
dev_err(bq->dev, "failed to register power supply: %d\n", ret);
- goto error_3;
+ goto error_2;
}
ret = bq2415x_sysfs_init(bq);
if (ret) {
dev_err(bq->dev, "failed to create sysfs entries: %d\n", ret);
- goto error_4;
+ goto error_3;
}
ret = bq2415x_set_defaults(bq);
if (ret) {
dev_err(bq->dev, "failed to set default values: %d\n", ret);
- goto error_5;
+ goto error_4;
}
- if (bq->notify_psy) {
+ if (bq->notify_node || bq->init_data.notify_device) {
bq->nb.notifier_call = bq2415x_notifier_call;
ret = power_supply_reg_notifier(&bq->nb);
if (ret) {
dev_err(bq->dev, "failed to reg notifier: %d\n", ret);
- goto error_6;
+ goto error_4;
}
- /* Query for initial reported_mode and set it */
- bq2415x_notifier_call(&bq->nb, PSY_EVENT_PROP_CHANGED,
- bq->notify_psy);
- bq2415x_set_mode(bq, bq->reported_mode);
-
bq->automode = 1;
- dev_info(bq->dev, "automode enabled\n");
+ dev_info(bq->dev, "automode supported, waiting for events\n");
} else {
bq->automode = -1;
dev_info(bq->dev, "automode not supported\n");
}
+ /* Query for initial reported_mode and set it */
+ if (bq->nb.notifier_call) {
+ if (np) {
+ notify_psy = power_supply_get_by_phandle(np,
+ "ti,usb-charger-detection");
+ if (IS_ERR(notify_psy))
+ notify_psy = NULL;
+ } else if (bq->init_data.notify_device) {
+ notify_psy = power_supply_get_by_name(
+ bq->init_data.notify_device);
+ }
+ }
+ if (notify_psy) {
+ ret = power_supply_get_property(notify_psy,
+ POWER_SUPPLY_PROP_CURRENT_MAX, &prop);
+ power_supply_put(notify_psy);
+
+ if (ret == 0) {
+ bq2415x_update_reported_mode(bq, prop.intval);
+ bq2415x_set_mode(bq, bq->reported_mode);
+ }
+ }
+
INIT_DELAYED_WORK(&bq->work, bq2415x_timer_work);
bq2415x_set_autotimer(bq, 1);
dev_info(bq->dev, "driver registered\n");
return 0;
-error_6:
-error_5:
- bq2415x_sysfs_exit(bq);
error_4:
- bq2415x_power_supply_exit(bq);
+ bq2415x_sysfs_exit(bq);
error_3:
- if (bq->notify_psy)
- power_supply_put(bq->notify_psy);
+ bq2415x_power_supply_exit(bq);
error_2:
+ if (bq->notify_node)
+ of_node_put(bq->notify_node);
kfree(name);
error_1:
mutex_lock(&bq2415x_id_mutex);
@@ -1707,10 +1721,11 @@ static int bq2415x_remove(struct i2c_client *client)
{
struct bq2415x_device *bq = i2c_get_clientdata(client);
- if (bq->notify_psy) {
+ if (bq->nb.notifier_call)
power_supply_unreg_notifier(&bq->nb);
- power_supply_put(bq->notify_psy);
- }
+
+ if (bq->notify_node)
+ of_node_put(bq->notify_node);
bq2415x_sysfs_exit(bq);
bq2415x_power_supply_exit(bq);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 15:10:09 +0000