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Filename Latest commit message Latest commit date
Guenter Roeck c2242478f2 hwmon: (lm90) Add basic support for TI TMP461 
[ Upstream commit f8344f7693a25d9025a59d164450b50c6f5aa3c0 ]

TMP461 is almost identical to TMP451 and was actually detected as TMP451
with the existing lm90 driver if its I2C address is 0x4c. Add support
for it to the lm90 driver. At the same time, improve the chip detection
function to at least try to distinguish between TMP451 and TMP461.

As a side effect, this fixes commit 24333ac26d ("hwmon: (tmp401) use
smb word operations instead of 2 smb byte operations"). TMP461 does not
support word operations on temperature registers, which causes bad
temperature readings with the tmp401 driver. The lm90 driver does not
perform word operations on temperature registers and thus does not have
this problem.

Support is listed as basic because TMP461 supports a sensor resolution
of 0.0625 degrees C, while the lm90 driver assumes a resolution of 0.125
degrees C. Also, the TMP461 supports negative temperatures with its
default temperature range, which is not the case for similar chips
supported by the lm90 and the tmp401 drivers. Those limitations will be
addressed with follow-up patches.

Fixes: 24333ac26d ("hwmon: (tmp401) use smb word operations instead of 2 smb byte operations")
Reported-by: David T. Wilson <david.wilson@nasa.gov>
Cc: David T. Wilson <david.wilson@nasa.gov>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-12-29 12:23:35 +01:00
..
ab8500.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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adm1021.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
adm1025.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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adm1275.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
adm9240.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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adt7462.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
adt7470.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
adt7475.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
amc6821.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
asb100.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
asc7621.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
aspeed-pwm-tacho.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
coretemp.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
da9052.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
da9055.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
dme1737.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ds620.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ds1621.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
emc6w201.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
emc1403.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
emc2103.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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f71882fg.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
fam15h_power.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ftsteutates.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
g760a.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
g762.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
gl518sm.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
hih6130.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
hwmon-kernel-api.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ibm-cffps.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
ibmaem.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ibmpowernv.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ina2xx.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ina209.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ina3221.rst hwmon: (ina3221) Add voltage conversion time settings 2019-04-18 06:44:11 -07:00
index.rst docs: hwmon: Include 'inspur-ipsps1.rst' into docs 2019-10-02 06:40:29 -07:00
inspur-ipsps1.rst hwmon: docs: Extend inspur-ipsps1 title underline 2019-10-07 05:56:57 -07:00
ir35221.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ir38064.rst docs: hwmon: convert three docs to ReST format 2019-04-22 15:27:27 -07:00
isl68137.rst docs: hwmon: convert three docs to ReST format 2019-04-22 15:27:27 -07:00
it87.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
jc42.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
k8temp.rst hwmon: (k8temp) documentation: update URL of datasheet 2019-07-21 19:18:45 -07:00
k10temp.rst hwmon: (k10temp) Update documentation and add temp2_input info 2019-10-02 06:35:57 -07:00
lineage-pem.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm63.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm70.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm73.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm75.rst hwmon: (lm75) add support for PCT2075 2019-09-03 12:47:17 -07:00
lm77.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm78.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm80.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm83.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm85.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm87.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm90.rst hwmon: (lm90) Add basic support for TI TMP461 2021-12-29 12:23:35 +01:00
lm92.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm93.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm25066.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
lm95234.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lm95245.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
lochnagar.rst docs: hwmon: convert three docs to ReST format 2019-04-22 15:27:27 -07:00
ltc2945.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ltc2978.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ltc2990.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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ltc4151.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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ltc4245.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ltc4260.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ltc4261.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max197.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max1619.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max1668.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max6639.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max6642.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max6650.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
max6697.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max8688.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
max16064.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
max16065.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
max20751.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
max31722.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max31785.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
max31790.rst hwmon: (max31790) Fix pwmX_enable attributes 2021-07-14 16:53:14 +02:00
max34440.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
mc13783-adc.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
mcp3021.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
menf21bmc.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
mlxreg-fan.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
nct6683.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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nct7904.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
npcm750-pwm-fan.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
nsa320.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
ntc_thermistor.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
occ.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
pc87360.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
pc87427.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
pcf8591.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
pmbus-core.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
pmbus.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
powr1220.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
pwm-fan.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
pxe1610.rst docs: hwmon: pxe1610: convert to ReST format and add to the index 2019-09-03 12:47:17 -07:00
raspberrypi-hwmon.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
sch5627.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
sch5636.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
scpi-hwmon.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
sht3x.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
sht15.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
sht21.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
shtc1.rst It's a somewhat calmer cycle for docs this time, as the churn of the mass 2019-09-17 16:22:26 -07:00
sis5595.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
smm665.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
smsc47b397.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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smsc47m192.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
submitting-patches.rst hwmon: submitting-patches: Add note on comment style 2019-09-13 05:43:06 -07:00
sysfs-interface.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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thmc50.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
tmp102.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
tmp103.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
tmp108.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
tmp401.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
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tps40422.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
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xgene-hwmon.rst docs: hwmon: Add an index file and rename docs to *.rst 2019-04-17 10:37:23 -07:00
zl6100.rst docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00