99 lines
2.9 KiB
Diff
99 lines
2.9 KiB
Diff
From b071bd22ecd496285ab8ceffc285279731434d85 Mon Sep 17 00:00:00 2001
|
|
From: Ondrej Jirman <megi@xff.cz>
|
|
Date: Sun, 21 May 2023 01:28:14 +0200
|
|
Subject: [PATCH 115/469] iio: light: stk3310: Add support for I2C regulator
|
|
|
|
I2C bus power is needed for communication with the device, but it's
|
|
not critical to keep the internal state of the sensor. Handle it
|
|
appropriately.
|
|
|
|
Signed-off-by: Ondrej Jirman <megi@xff.cz>
|
|
---
|
|
drivers/iio/light/stk3310.c | 26 +++++++++++++++++++++++++-
|
|
1 file changed, 25 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
|
|
index df5bf148ffe5..2d28bcebf28c 100644
|
|
--- a/drivers/iio/light/stk3310.c
|
|
+++ b/drivers/iio/light/stk3310.c
|
|
@@ -119,6 +119,7 @@ struct stk3310_data {
|
|
struct regmap_field *reg_flag_psint;
|
|
struct regmap_field *reg_flag_nf;
|
|
struct regulator *vdd_reg;
|
|
+ struct regulator *i2c_reg;
|
|
};
|
|
|
|
static const struct iio_event_spec stk3310_events[] = {
|
|
@@ -614,6 +615,11 @@ static int stk3310_probe(struct i2c_client *client)
|
|
return dev_err_probe(&client->dev, PTR_ERR(data->vdd_reg),
|
|
"get regulator vdd failed\n");
|
|
|
|
+ data->i2c_reg = devm_regulator_get(&client->dev, "i2c");
|
|
+ if (IS_ERR(data->i2c_reg))
|
|
+ return dev_err_probe(&client->dev, PTR_ERR(data->i2c_reg),
|
|
+ "get regulator i2c failed\n");
|
|
+
|
|
ret = stk3310_regmap_init(data);
|
|
if (ret < 0)
|
|
return ret;
|
|
@@ -631,9 +637,15 @@ static int stk3310_probe(struct i2c_client *client)
|
|
"regulator vdd enable failed\n");
|
|
}
|
|
|
|
+ ret = regulator_enable(data->i2c_reg);
|
|
+ if (ret) {
|
|
+ dev_err_probe(&client->dev, ret, "regulator i2c enable failed\n");
|
|
+ goto err_vdd_disable;
|
|
+ }
|
|
+
|
|
ret = stk3310_init(indio_dev);
|
|
if (ret < 0)
|
|
- goto err_vdd_disable;
|
|
+ goto err_i2c_disable;
|
|
|
|
if (client->irq > 0) {
|
|
ret = devm_request_threaded_irq(&client->dev, client->irq,
|
|
@@ -659,6 +671,8 @@ static int stk3310_probe(struct i2c_client *client)
|
|
|
|
err_standby:
|
|
stk3310_set_state(data, STK3310_STATE_STANDBY);
|
|
+err_i2c_disable:
|
|
+ regulator_disable(data->i2c_reg);
|
|
err_vdd_disable:
|
|
if (data->vdd_reg)
|
|
regulator_disable(data->vdd_reg);
|
|
@@ -672,6 +686,7 @@ static void stk3310_remove(struct i2c_client *client)
|
|
|
|
iio_device_unregister(indio_dev);
|
|
stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);
|
|
+ regulator_disable(data->i2c_reg);
|
|
if (data->vdd_reg)
|
|
regulator_disable(data->vdd_reg);
|
|
}
|
|
@@ -692,6 +707,8 @@ static int stk3310_suspend(struct device *dev)
|
|
regulator_disable(data->vdd_reg);
|
|
}
|
|
|
|
+ regulator_disable(data->i2c_reg);
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
@@ -713,6 +730,13 @@ static int stk3310_resume(struct device *dev)
|
|
regcache_sync(data->regmap);
|
|
}
|
|
|
|
+ ret = regulator_enable(data->i2c_reg);
|
|
+ if (ret) {
|
|
+ dev_err(dev, "Failed to re-enable regulator i2c\n");
|
|
+ regulator_disable(data->vdd_reg);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
if (data->ps_enabled)
|
|
state |= STK3310_STATE_EN_PS;
|
|
if (data->als_enabled)
|
|
--
|
|
2.34.1
|
|
|