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hwmon: (lm75) Add NXP P3T1755 support

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Add this LM75 compatible sensor which needs a separate entry because of
its default sampling time and SMBusAlert handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20241218074131.4351-7-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Wolfram Sang 2024-12-18 08:41:33 +01:00 committed by Guenter Roeck
parent 844029c59d
commit d3506653d0
2 changed files with 17 additions and 2 deletions
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6
Documentation/hwmon/lm75.rst
View File

@ -121,9 +121,9 @@ Supported chips:
https://www.ti.com/product/TMP1075
* NXP LM75B, PCT2075
* NXP LM75B, P3T1755, PCT2075
Prefix: 'lm75b', 'pct2075'
Prefix: 'lm75b', 'p3t1755', 'pct2075'
Addresses scanned: none
@ -131,6 +131,8 @@ Supported chips:
https://www.nxp.com/documents/data_sheet/LM75B.pdf
https://www.nxp.com/docs/en/data-sheet/P3T1755.pdf
https://www.nxp.com/docs/en/data-sheet/PCT2075.pdf
* AMS OSRAM AS6200

13
drivers/hwmon/lm75.c
View File

@ -38,6 +38,7 @@ enum lm75_type { /* keep sorted in alphabetical order */
max6626,
max31725,
mcp980x,
p3t1755,
pct2075,
stds75,
stlm75,
@ -222,6 +223,13 @@ static const struct lm75_params device_params[] = {
.default_resolution = 9,
.default_sample_time = MSEC_PER_SEC / 18,
},
[p3t1755] = {
.clr_mask = 1 << 1 | 1 << 7, /* disable SMBAlert and one-shot */
.default_resolution = 12,
.default_sample_time = 55,
.num_sample_times = 4,
.sample_times = (unsigned int []){ 28, 55, 110, 220 },
},
[pct2075] = {
.default_resolution = 11,
.default_sample_time = MSEC_PER_SEC / 10,
@ -734,6 +742,7 @@ static const struct i2c_device_id lm75_ids[] = {
{ "max31725", max31725, },
{ "max31726", max31725, },
{ "mcp980x", mcp980x, },
{ "p3t1755", p3t1755, },
{ "pct2075", pct2075, },
{ "stds75", stds75, },
{ "stlm75", stlm75, },
@ -813,6 +822,10 @@ static const struct of_device_id __maybe_unused lm75_of_match[] = {
.compatible = "maxim,mcp980x",
.data = (void *)mcp980x
},
{
.compatible = "nxp,p3t1755",
.data = (void *)p3t1755
},
{
.compatible = "nxp,pct2075",
.data = (void *)pct2075