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dlkm/wl2866d: disable avdd1 when device shutdown

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Disable avdd1 when device shutdown for peripherals stability and
current leak issue.

Change-Id: I596899cff45f7da15a5339a122b47c7ad4e6fd01
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/2045126
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
wangyq13 2021-08-18 19:02:41 +08:00 • committed by Yeqing Wang
commit 720f1980f5
1 changed files with 16 additions and 0 deletions
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16
drivers/regulator/wl2866d/wl2866d-regulator.c
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@ -36,6 +36,7 @@ struct wl2866d {
struct regulator_dev *rdev[WL2866D_MAX_REGULATORS];
int chip_cs_pin;
int init_value;
bool shutdown_ldo;
};
struct wl2866d_evt_sta {
@ -306,6 +307,7 @@ static int wl2866d_i2c_probe(struct i2c_client *client,
}
chip->init_value = value;
dev_info(chip->dev, "wl2866d_i2c_probe init_value:%d...\n", value);
chip->shutdown_ldo = of_property_read_bool(dev->of_node, "semi,shutdown-ldo");
mdelay(10);
@ -358,6 +360,19 @@ static int wl2866d_i2c_remove(struct i2c_client *client)
return ret;
}
static void wl2866d_i2c_shutdown(struct i2c_client *client)
{
struct wl2866d *chip = i2c_get_clientdata(client);
unsigned int val = 0;
if (chip->shutdown_ldo) {
regmap_read(chip->regmap, WL2866D_LDO_EN, &val);
/* Disable AVDD1 when shutdown to meet device SPEC and avoid current leak */
regmap_write(chip->regmap, WL2866D_LDO_EN, val & ~(1<<2));
dev_info(chip->dev, "wl2866d_i2c_shutdown");
}
}
static const struct i2c_device_id wl2866d_i2c_id[] = {
{"wl2866d", 0},
{},
@ -370,6 +385,7 @@ static struct i2c_driver wl2866d_regulator_driver = {
},
.probe = wl2866d_i2c_probe,
.remove = wl2866d_i2c_remove,
.shutdown = wl2866d_i2c_shutdown,
.id_table = wl2866d_i2c_id,
};