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path: root/drivers/iio/proximity/rfd77402.c
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Diffstat (limited to 'drivers/iio/proximity/rfd77402.c')
-rw-r--r--drivers/iio/proximity/rfd77402.c83
1 files changed, 33 insertions, 50 deletions
diff --git a/drivers/iio/proximity/rfd77402.c b/drivers/iio/proximity/rfd77402.c
index 7a0472323f17..8c06d02139b6 100644
--- a/drivers/iio/proximity/rfd77402.c
+++ b/drivers/iio/proximity/rfd77402.c
@@ -90,18 +90,18 @@ static const struct iio_chan_spec rfd77402_channels[] = {
},
};
-static int rfd77402_set_state(struct rfd77402_data *data, u8 state, u16 check)
+static int rfd77402_set_state(struct i2c_client *client, u8 state, u16 check)
{
int ret;
- ret = i2c_smbus_write_byte_data(data->client, RFD77402_CMD_R,
+ ret = i2c_smbus_write_byte_data(client, RFD77402_CMD_R,
state | RFD77402_CMD_VALID);
if (ret < 0)
return ret;
usleep_range(10000, 20000);
- ret = i2c_smbus_read_word_data(data->client, RFD77402_STATUS_R);
+ ret = i2c_smbus_read_word_data(client, RFD77402_STATUS_R);
if (ret < 0)
return ret;
if ((ret & RFD77402_STATUS_PM_MASK) != check)
@@ -110,24 +110,24 @@ static int rfd77402_set_state(struct rfd77402_data *data, u8 state, u16 check)
return 0;
}
-static int rfd77402_measure(struct rfd77402_data *data)
+static int rfd77402_measure(struct i2c_client *client)
{
int ret;
int tries = 10;
- ret = rfd77402_set_state(data, RFD77402_CMD_MCPU_ON,
+ ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_ON,
RFD77402_STATUS_MCPU_ON);
if (ret < 0)
return ret;
- ret = i2c_smbus_write_byte_data(data->client, RFD77402_CMD_R,
+ ret = i2c_smbus_write_byte_data(client, RFD77402_CMD_R,
RFD77402_CMD_SINGLE |
RFD77402_CMD_VALID);
if (ret < 0)
goto err;
while (tries-- > 0) {
- ret = i2c_smbus_read_byte_data(data->client, RFD77402_ICSR);
+ ret = i2c_smbus_read_byte_data(client, RFD77402_ICSR);
if (ret < 0)
goto err;
if (ret & RFD77402_ICSR_RESULT)
@@ -140,7 +140,7 @@ static int rfd77402_measure(struct rfd77402_data *data)
goto err;
}
- ret = i2c_smbus_read_word_data(data->client, RFD77402_RESULT_R);
+ ret = i2c_smbus_read_word_data(client, RFD77402_RESULT_R);
if (ret < 0)
goto err;
@@ -153,7 +153,7 @@ static int rfd77402_measure(struct rfd77402_data *data)
return (ret & RFD77402_RESULT_DIST_MASK) >> 2;
err:
- rfd77402_set_state(data, RFD77402_CMD_MCPU_OFF,
+ rfd77402_set_state(client, RFD77402_CMD_MCPU_OFF,
RFD77402_STATUS_MCPU_OFF);
return ret;
}
@@ -168,7 +168,7 @@ static int rfd77402_read_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_RAW:
mutex_lock(&data->lock);
- ret = rfd77402_measure(data);
+ ret = rfd77402_measure(data->client);
mutex_unlock(&data->lock);
if (ret < 0)
return ret;
@@ -188,23 +188,23 @@ static const struct iio_info rfd77402_info = {
.read_raw = rfd77402_read_raw,
};
-static int rfd77402_init(struct rfd77402_data *data)
+static int rfd77402_init(struct i2c_client *client)
{
int ret, i;
- ret = rfd77402_set_state(data, RFD77402_CMD_STANDBY,
+ ret = rfd77402_set_state(client, RFD77402_CMD_STANDBY,
RFD77402_STATUS_STANDBY);
if (ret < 0)
return ret;
/* configure INT pad as push-pull, active low */
- ret = i2c_smbus_write_byte_data(data->client, RFD77402_ICSR,
+ ret = i2c_smbus_write_byte_data(client, RFD77402_ICSR,
RFD77402_ICSR_INT_MODE);
if (ret < 0)
return ret;
/* I2C configuration */
- ret = i2c_smbus_write_word_data(data->client, RFD77402_I2C_INIT_CFG,
+ ret = i2c_smbus_write_word_data(client, RFD77402_I2C_INIT_CFG,
RFD77402_I2C_ADDR_INCR |
RFD77402_I2C_DATA_INCR |
RFD77402_I2C_HOST_DEBUG |
@@ -213,45 +213,50 @@ static int rfd77402_init(struct rfd77402_data *data)
return ret;
/* set initialization */
- ret = i2c_smbus_write_word_data(data->client, RFD77402_PMU_CFG, 0x0500);
+ ret = i2c_smbus_write_word_data(client, RFD77402_PMU_CFG, 0x0500);
if (ret < 0)
return ret;
- ret = rfd77402_set_state(data, RFD77402_CMD_MCPU_OFF,
+ ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_OFF,
RFD77402_STATUS_MCPU_OFF);
if (ret < 0)
return ret;
/* set initialization */
- ret = i2c_smbus_write_word_data(data->client, RFD77402_PMU_CFG, 0x0600);
+ ret = i2c_smbus_write_word_data(client, RFD77402_PMU_CFG, 0x0600);
if (ret < 0)
return ret;
- ret = rfd77402_set_state(data, RFD77402_CMD_MCPU_ON,
+ ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_ON,
RFD77402_STATUS_MCPU_ON);
if (ret < 0)
return ret;
for (i = 0; i < ARRAY_SIZE(rf77402_tof_config); i++) {
- ret = i2c_smbus_write_word_data(data->client,
+ ret = i2c_smbus_write_word_data(client,
rf77402_tof_config[i].reg,
rf77402_tof_config[i].val);
if (ret < 0)
return ret;
}
- ret = rfd77402_set_state(data, RFD77402_CMD_STANDBY,
+ ret = rfd77402_set_state(client, RFD77402_CMD_STANDBY,
RFD77402_STATUS_STANDBY);
return ret;
}
-static int rfd77402_powerdown(struct rfd77402_data *data)
+static int rfd77402_powerdown(struct i2c_client *client)
{
- return rfd77402_set_state(data, RFD77402_CMD_STANDBY,
+ return rfd77402_set_state(client, RFD77402_CMD_STANDBY,
RFD77402_STATUS_STANDBY);
}
+static void rfd77402_disable(void *client)
+{
+ rfd77402_powerdown(client);
+}
+
static int rfd77402_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -270,7 +275,6 @@ static int rfd77402_probe(struct i2c_client *client,
return -ENOMEM;
data = iio_priv(indio_dev);
- i2c_set_clientdata(client, indio_dev);
data->client = client;
mutex_init(&data->lock);
@@ -280,46 +284,26 @@ static int rfd77402_probe(struct i2c_client *client,
indio_dev->name = RFD77402_DRV_NAME;
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = rfd77402_init(data);
+ ret = rfd77402_init(client);
if (ret < 0)
return ret;
- ret = iio_device_register(indio_dev);
+ ret = devm_add_action_or_reset(&client->dev, rfd77402_disable, client);
if (ret)
- goto err_powerdown;
-
- return 0;
-
-err_powerdown:
- rfd77402_powerdown(data);
- return ret;
-}
-
-static int rfd77402_remove(struct i2c_client *client)
-{
- struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
- iio_device_unregister(indio_dev);
- rfd77402_powerdown(iio_priv(indio_dev));
+ return ret;
- return 0;
+ return devm_iio_device_register(&client->dev, indio_dev);
}
#ifdef CONFIG_PM_SLEEP
static int rfd77402_suspend(struct device *dev)
{
- struct rfd77402_data *data = iio_priv(i2c_get_clientdata(
- to_i2c_client(dev)));
-
- return rfd77402_powerdown(data);
+ return rfd77402_powerdown(to_i2c_client(dev));
}
static int rfd77402_resume(struct device *dev)
{
- struct rfd77402_data *data = iio_priv(i2c_get_clientdata(
- to_i2c_client(dev)));
-
- return rfd77402_init(data);
+ return rfd77402_init(to_i2c_client(dev));
}
#endif
@@ -337,7 +321,6 @@ static struct i2c_driver rfd77402_driver = {
.pm = &rfd77402_pm_ops,
},
.probe = rfd77402_probe,
- .remove = rfd77402_remove,
.id_table = rfd77402_id,
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.