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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.c94
1 files changed, 66 insertions, 28 deletions
diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
index 6c534dcbc19c..e98dcb661cc9 100644
--- a/drivers/power/bq2415x_charger.c
+++ b/drivers/power/bq2415x_charger.c
@@ -35,6 +35,7 @@
#include <linux/idr.h>
#include <linux/i2c.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
#include <linux/power/bq2415x_charger.h>
@@ -631,7 +632,7 @@ static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA)
int val;
if (bq->init_data.resistor_sense <= 0)
- return -ENOSYS;
+ return -EINVAL;
val = (mA * bq->init_data.resistor_sense - 37400) / 6800;
if (val < 0)
@@ -650,7 +651,7 @@ static int bq2415x_get_charge_current(struct bq2415x_device *bq)
int ret;
if (bq->init_data.resistor_sense <= 0)
- return -ENOSYS;
+ return -EINVAL;
ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT,
BQ2415X_MASK_VI_CHRG, BQ2415X_SHIFT_VI_CHRG);
@@ -665,7 +666,7 @@ static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA)
int val;
if (bq->init_data.resistor_sense <= 0)
- return -ENOSYS;
+ return -EINVAL;
val = (mA * bq->init_data.resistor_sense - 3400) / 3400;
if (val < 0)
@@ -684,7 +685,7 @@ static int bq2415x_get_termination_current(struct bq2415x_device *bq)
int ret;
if (bq->init_data.resistor_sense <= 0)
- return -ENOSYS;
+ return -EINVAL;
ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT,
BQ2415X_MASK_VI_TERM, BQ2415X_SHIFT_VI_TERM);
@@ -1166,7 +1167,7 @@ static ssize_t bq2415x_sysfs_set_mode(struct device *dev,
if (strncmp(buf, "auto", 4) == 0) {
if (bq->automode < 0)
- return -ENOSYS;
+ return -EINVAL;
bq->automode = 1;
mode = bq->reported_mode;
} else if (strncmp(buf, "off", 3) == 0) {
@@ -1530,13 +1531,14 @@ static int bq2415x_probe(struct i2c_client *client,
{
int ret;
int num;
- char *name;
+ char *name = NULL;
struct bq2415x_device *bq;
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;
- if (!np && !pdata) {
- dev_err(&client->dev, "platform data missing\n");
+ if (!np && !pdata && !ACPI_HANDLE(&client->dev)) {
+ dev_err(&client->dev, "Neither devicetree, nor platform data, nor ACPI support\n");
return -ENODEV;
}
@@ -1547,7 +1549,14 @@ static int bq2415x_probe(struct i2c_client *client,
if (num < 0)
return num;
- name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
+ if (id) {
+ name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
+ } else if (ACPI_HANDLE(&client->dev)) {
+ acpi_id =
+ acpi_match_device(client->dev.driver->acpi_match_table,
+ &client->dev);
+ name = kasprintf(GFP_KERNEL, "%s-%d", acpi_id->id, num);
+ }
if (!name) {
dev_err(&client->dev, "failed to allocate device name\n");
ret = -ENOMEM;
@@ -1556,63 +1565,72 @@ static int bq2415x_probe(struct i2c_client *client,
bq = devm_kzalloc(&client->dev, sizeof(*bq), GFP_KERNEL);
if (!bq) {
- dev_err(&client->dev, "failed to allocate device data\n");
ret = -ENOMEM;
goto error_2;
}
if (np) {
- bq->notify_psy = power_supply_get_by_phandle(np, "ti,usb-charger-detection");
+ 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",
+ "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->notify_device)
+ } else if (pdata && pdata->notify_device) {
bq->notify_psy = power_supply_get_by_name(pdata->notify_device);
- else
+ } else {
bq->notify_psy = NULL;
+ }
i2c_set_clientdata(client, bq);
bq->id = num;
bq->dev = &client->dev;
- bq->chip = id->driver_data;
+ if (id)
+ bq->chip = id->driver_data;
+ else if (ACPI_HANDLE(bq->dev))
+ bq->chip = acpi_id->driver_data;
bq->name = name;
bq->mode = BQ2415X_MODE_OFF;
bq->reported_mode = BQ2415X_MODE_OFF;
bq->autotimer = 0;
bq->automode = 0;
- if (np) {
- ret = of_property_read_u32(np, "ti,current-limit",
- &bq->init_data.current_limit);
+ if (np || ACPI_HANDLE(bq->dev)) {
+ ret = device_property_read_u32(bq->dev,
+ "ti,current-limit",
+ &bq->init_data.current_limit);
if (ret)
goto error_3;
- ret = of_property_read_u32(np, "ti,weak-battery-voltage",
- &bq->init_data.weak_battery_voltage);
+ ret = device_property_read_u32(bq->dev,
+ "ti,weak-battery-voltage",
+ &bq->init_data.weak_battery_voltage);
if (ret)
goto error_3;
- ret = of_property_read_u32(np, "ti,battery-regulation-voltage",
+ ret = device_property_read_u32(bq->dev,
+ "ti,battery-regulation-voltage",
&bq->init_data.battery_regulation_voltage);
if (ret)
goto error_3;
- ret = of_property_read_u32(np, "ti,charge-current",
- &bq->init_data.charge_current);
+ ret = device_property_read_u32(bq->dev,
+ "ti,charge-current",
+ &bq->init_data.charge_current);
if (ret)
goto error_3;
- ret = of_property_read_u32(np, "ti,termination-current",
+ ret = device_property_read_u32(bq->dev,
+ "ti,termination-current",
&bq->init_data.termination_current);
if (ret)
goto error_3;
- ret = of_property_read_u32(np, "ti,resistor-sense",
- &bq->init_data.resistor_sense);
+ ret = device_property_read_u32(bq->dev,
+ "ti,resistor-sense",
+ &bq->init_data.resistor_sense);
if (ret)
goto error_3;
} else {
@@ -1648,7 +1666,8 @@ static int bq2415x_probe(struct i2c_client *client,
}
/* Query for initial reported_mode and set it */
- bq2415x_notifier_call(&bq->nb, PSY_EVENT_PROP_CHANGED, bq->notify_psy);
+ bq2415x_notifier_call(&bq->nb, PSY_EVENT_PROP_CHANGED,
+ bq->notify_psy);
bq2415x_set_mode(bq, bq->reported_mode);
bq->automode = 1;
@@ -1727,9 +1746,28 @@ static const struct i2c_device_id bq2415x_i2c_id_table[] = {
};
MODULE_DEVICE_TABLE(i2c, bq2415x_i2c_id_table);
+static const struct acpi_device_id bq2415x_i2c_acpi_match[] = {
+ { "BQ2415X", BQUNKNOWN },
+ { "BQ241500", BQ24150 },
+ { "BQA24150", BQ24150A },
+ { "BQ241510", BQ24151 },
+ { "BQA24151", BQ24151A },
+ { "BQ241520", BQ24152 },
+ { "BQ241530", BQ24153 },
+ { "BQA24153", BQ24153A },
+ { "BQ241550", BQ24155 },
+ { "BQ241560", BQ24156 },
+ { "BQA24156", BQ24156A },
+ { "BQS24157", BQ24157S },
+ { "BQ241580", BQ24158 },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, bq2415x_i2c_acpi_match);
+
static struct i2c_driver bq2415x_driver = {
.driver = {
.name = "bq2415x-charger",
+ .acpi_match_table = ACPI_PTR(bq2415x_i2c_acpi_match),
},
.probe = bq2415x_probe,
.remove = bq2415x_remove,
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