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-rw-r--r--Documentation/hwmon/sysfs-interface14
-rw-r--r--drivers/hwmon/Kconfig2
-rw-r--r--drivers/hwmon/ntc_thermistor.c15
3 files changed, 24 insertions, 7 deletions
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 79f8257dd790..2cc95ad46604 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -327,6 +327,13 @@ temp[1-*]_max_hyst
327 from the max value. 327 from the max value.
328 RW 328 RW
329 329
330temp[1-*]_min_hyst
331 Temperature hysteresis value for min limit.
332 Unit: millidegree Celsius
333 Must be reported as an absolute temperature, NOT a delta
334 from the min value.
335 RW
336
330temp[1-*]_input Temperature input value. 337temp[1-*]_input Temperature input value.
331 Unit: millidegree Celsius 338 Unit: millidegree Celsius
332 RO 339 RO
@@ -362,6 +369,13 @@ temp[1-*]_lcrit Temperature critical min value, typically lower than
362 Unit: millidegree Celsius 369 Unit: millidegree Celsius
363 RW 370 RW
364 371
372temp[1-*]_lcrit_hyst
373 Temperature hysteresis value for critical min limit.
374 Unit: millidegree Celsius
375 Must be reported as an absolute temperature, NOT a delta
376 from the critical min value.
377 RW
378
365temp[1-*]_offset 379temp[1-*]_offset
366 Temperature offset which is added to the temperature reading 380 Temperature offset which is added to the temperature reading
367 by the chip. 381 by the chip.
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index bc196f49ec53..4af0da96c2e2 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1053,7 +1053,7 @@ config SENSORS_PC87427
1053 1053
1054config SENSORS_NTC_THERMISTOR 1054config SENSORS_NTC_THERMISTOR
1055 tristate "NTC thermistor support" 1055 tristate "NTC thermistor support"
1056 depends on (!OF && !IIO) || (OF && IIO) 1056 depends on !OF || IIO=n || IIO
1057 help 1057 help
1058 This driver supports NTC thermistors sensor reading and its 1058 This driver supports NTC thermistors sensor reading and its
1059 interpretation. The driver can also monitor the temperature and 1059 interpretation. The driver can also monitor the temperature and
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index 8a17f01e8672..e76feb86a1d4 100644
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -44,6 +44,7 @@ struct ntc_compensation {
44 unsigned int ohm; 44 unsigned int ohm;
45}; 45};
46 46
47/* Order matters, ntc_match references the entries by index */
47static const struct platform_device_id ntc_thermistor_id[] = { 48static const struct platform_device_id ntc_thermistor_id[] = {
48 { "ncp15wb473", TYPE_NCPXXWB473 }, 49 { "ncp15wb473", TYPE_NCPXXWB473 },
49 { "ncp18wb473", TYPE_NCPXXWB473 }, 50 { "ncp18wb473", TYPE_NCPXXWB473 },
@@ -141,7 +142,7 @@ struct ntc_data {
141 char name[PLATFORM_NAME_SIZE]; 142 char name[PLATFORM_NAME_SIZE];
142}; 143};
143 144
144#ifdef CONFIG_OF 145#if defined(CONFIG_OF) && IS_ENABLED(CONFIG_IIO)
145static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata) 146static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
146{ 147{
147 struct iio_channel *channel = pdata->chan; 148 struct iio_channel *channel = pdata->chan;
@@ -163,15 +164,15 @@ static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
163 164
164static const struct of_device_id ntc_match[] = { 165static const struct of_device_id ntc_match[] = {
165 { .compatible = "ntc,ncp15wb473", 166 { .compatible = "ntc,ncp15wb473",
166 .data = &ntc_thermistor_id[TYPE_NCPXXWB473] }, 167 .data = &ntc_thermistor_id[0] },
167 { .compatible = "ntc,ncp18wb473", 168 { .compatible = "ntc,ncp18wb473",
168 .data = &ntc_thermistor_id[TYPE_NCPXXWB473] }, 169 .data = &ntc_thermistor_id[1] },
169 { .compatible = "ntc,ncp21wb473", 170 { .compatible = "ntc,ncp21wb473",
170 .data = &ntc_thermistor_id[TYPE_NCPXXWB473] }, 171 .data = &ntc_thermistor_id[2] },
171 { .compatible = "ntc,ncp03wb473", 172 { .compatible = "ntc,ncp03wb473",
172 .data = &ntc_thermistor_id[TYPE_NCPXXWB473] }, 173 .data = &ntc_thermistor_id[3] },
173 { .compatible = "ntc,ncp15wl333", 174 { .compatible = "ntc,ncp15wl333",
174 .data = &ntc_thermistor_id[TYPE_NCPXXWL333] }, 175 .data = &ntc_thermistor_id[4] },
175 { }, 176 { },
176}; 177};
177MODULE_DEVICE_TABLE(of, ntc_match); 178MODULE_DEVICE_TABLE(of, ntc_match);
@@ -223,6 +224,8 @@ ntc_thermistor_parse_dt(struct platform_device *pdev)
223 return NULL; 224 return NULL;
224} 225}
225 226
227#define ntc_match NULL
228
226static void ntc_iio_channel_release(struct ntc_thermistor_platform_data *pdata) 229static void ntc_iio_channel_release(struct ntc_thermistor_platform_data *pdata)
227{ } 230{ }
228#endif 231#endif