diff options
Diffstat (limited to 'drivers/hwmon/ntc_thermistor.c')
| -rw-r--r-- | drivers/hwmon/ntc_thermistor.c | 49 |
1 files changed, 13 insertions, 36 deletions
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c index 8a78e899fa12..cedb3ee0f762 100644 --- a/drivers/hwmon/ntc_thermistor.c +++ b/drivers/hwmon/ntc_thermistor.c @@ -28,8 +28,7 @@ enum ntc_thermistor_type { struct ntc_thermistor_platform_data { /* - * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use - * read_uV() + * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required. * * How to setup pullup_ohm, pulldown_ohm, and connect is * described at Documentation/hwmon/ntc_thermistor.rst @@ -39,9 +38,7 @@ struct ntc_thermistor_platform_data { * chan: iio_channel pointer to communicate with the ADC which the * thermistor is using for conversion of the analog values. */ - int (*read_uv)(struct ntc_thermistor_platform_data *); unsigned int pullup_uv; - unsigned int pullup_ohm; unsigned int pulldown_ohm; enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect; @@ -346,7 +343,6 @@ struct ntc_data { int n_comp; }; -#if defined(CONFIG_OF) && IS_ENABLED(CONFIG_IIO) static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata) { struct iio_channel *channel = pdata->chan; @@ -451,20 +447,9 @@ ntc_thermistor_parse_dt(struct device *dev) pdata->connect = NTC_CONNECTED_GROUND; pdata->chan = chan; - pdata->read_uv = ntc_adc_iio_read; return pdata; } -#else -static struct ntc_thermistor_platform_data * -ntc_thermistor_parse_dt(struct device *dev) -{ - return NULL; -} - -#define ntc_match NULL - -#endif static inline u64 div64_u64_safe(u64 dividend, u64 divisor) { @@ -594,13 +579,10 @@ static int ntc_thermistor_get_ohm(struct ntc_data *data) { int read_uv; - if (data->pdata->read_uv) { - read_uv = data->pdata->read_uv(data->pdata); - if (read_uv < 0) - return read_uv; - return get_ohm_of_thermistor(data, read_uv); - } - return -EINVAL; + read_uv = ntc_adc_iio_read(data->pdata); + if (read_uv < 0) + return read_uv; + return get_ohm_of_thermistor(data, read_uv); } static int ntc_read(struct device *dev, enum hwmon_sensor_types type, @@ -681,19 +663,14 @@ static int ntc_thermistor_probe(struct platform_device *pdev) return -ENODEV; } - if (!pdata->read_uv) { - dev_err(dev, "read_uv missing\n"); - return -EINVAL; - } - - if (pdata->read_uv && (pdata->pullup_uv == 0 || - (pdata->pullup_ohm == 0 && pdata->connect == - NTC_CONNECTED_GROUND) || - (pdata->pulldown_ohm == 0 && pdata->connect == - NTC_CONNECTED_POSITIVE) || - (pdata->connect != NTC_CONNECTED_POSITIVE && - pdata->connect != NTC_CONNECTED_GROUND))) { - dev_err(dev, "Required data to use read_uv not supplied.\n"); + if (pdata->pullup_uv == 0 || + (pdata->pullup_ohm == 0 && pdata->connect == + NTC_CONNECTED_GROUND) || + (pdata->pulldown_ohm == 0 && pdata->connect == + NTC_CONNECTED_POSITIVE) || + (pdata->connect != NTC_CONNECTED_POSITIVE && + pdata->connect != NTC_CONNECTED_GROUND)) { + dev_err(dev, "Required data to use NTC driver not supplied.\n"); return -EINVAL; } |