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hwmon: (ntc_thermistor): add support for B57891S0103 from Epcos 

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Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Peter Rosin 2018-11-17 12:13:00 +00:00 committed by Guenter Roeck
parent e1fd3be613
commit e8fda2c864
3 changed files with 58 additions and 3 deletions
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3
drivers/hwmon/Kconfig
View File

@ -1218,7 +1218,8 @@ config SENSORS_NTC_THERMISTOR
Currently, this driver supports
NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333,
NCP03WF104 and NCP15XH103 from Murata and B57330V2103 from EPCOS.
NCP03WF104 and NCP15XH103 from Murata and B57330V2103 and
B57891S0103 from EPCOS.
This driver can also be built as a module. If so, the module
will be called ntc-thermistor.

57
drivers/hwmon/ntc_thermistor.c
View File

@ -55,6 +55,7 @@ static const struct platform_device_id ntc_thermistor_id[] = {
{ "b57330v2103", TYPE_B57330V2103},
{ "ncp03wf104", TYPE_NCPXXWF104 },
{ "ncp15xh103", TYPE_NCPXXXH103 },
{ "b57891s0103", TYPE_B57891S0103 },
{ },
};
@ -212,8 +213,8 @@ static const struct ntc_compensation ncpXXxh103[] = {
};
/*
* The following compensation table is from the specification of EPCOS NTC
* Thermistors Datasheet
* The following compensation tables are from the specifications in EPCOS NTC
* Thermistors Datasheets
*/
static const struct ntc_compensation b57330v2103[] = {
{ .temp_c = -40, .ohm = 190030 },
@ -252,6 +253,52 @@ static const struct ntc_compensation b57330v2103[] = {
{ .temp_c = 125, .ohm = 531 },
};
static const struct ntc_compensation b57891s0103[] = {
{ .temp_c = -55.0, .ohm = 878900 },
{ .temp_c = -50.0, .ohm = 617590 },
{ .temp_c = -45.0, .ohm = 439340 },
{ .temp_c = -40.0, .ohm = 316180 },
{ .temp_c = -35.0, .ohm = 230060 },
{ .temp_c = -30.0, .ohm = 169150 },
{ .temp_c = -25.0, .ohm = 125550 },
{ .temp_c = -20.0, .ohm = 94143 },
{ .temp_c = -15.0, .ohm = 71172 },
{ .temp_c = -10.0, .ohm = 54308 },
{ .temp_c = -5.0, .ohm = 41505 },
{ .temp_c = 0.0, .ohm = 32014 },
{ .temp_c = 5.0, .ohm = 25011 },
{ .temp_c = 10.0, .ohm = 19691 },
{ .temp_c = 15.0, .ohm = 15618 },
{ .temp_c = 20.0, .ohm = 12474 },
{ .temp_c = 25.0, .ohm = 10000 },
{ .temp_c = 30.0, .ohm = 8080 },
{ .temp_c = 35.0, .ohm = 6569 },
{ .temp_c = 40.0, .ohm = 5372 },
{ .temp_c = 45.0, .ohm = 4424 },
{ .temp_c = 50.0, .ohm = 3661 },
{ .temp_c = 55.0, .ohm = 3039 },
{ .temp_c = 60.0, .ohm = 2536 },
{ .temp_c = 65.0, .ohm = 2128 },
{ .temp_c = 70.0, .ohm = 1794 },
{ .temp_c = 75.0, .ohm = 1518 },
{ .temp_c = 80.0, .ohm = 1290 },
{ .temp_c = 85.0, .ohm = 1100 },
{ .temp_c = 90.0, .ohm = 942 },
{ .temp_c = 95.0, .ohm = 809 },
{ .temp_c = 100.0, .ohm = 697 },
{ .temp_c = 105.0, .ohm = 604 },
{ .temp_c = 110.0, .ohm = 525 },
{ .temp_c = 115.0, .ohm = 457 },
{ .temp_c = 120.0, .ohm = 400 },
{ .temp_c = 125.0, .ohm = 351 },
{ .temp_c = 130.0, .ohm = 308 },
{ .temp_c = 135.0, .ohm = 272 },
{ .temp_c = 140.0, .ohm = 240 },
{ .temp_c = 145.0, .ohm = 213 },
{ .temp_c = 150.0, .ohm = 189 },
{ .temp_c = 155.0, .ohm = 168 },
};
struct ntc_data {
struct ntc_thermistor_platform_data *pdata;
const struct ntc_compensation *comp;
@ -296,6 +343,8 @@ static const struct of_device_id ntc_match[] = {
.data = &ntc_thermistor_id[6] },
{ .compatible = "murata,ncp15xh103",
.data = &ntc_thermistor_id[7] },
{ .compatible = "epcos,b57891s0103",
.data = &ntc_thermistor_id[8] },
/* Usage of vendor name "ntc" is deprecated */
{ .compatible = "ntc,ncp15wb473",
@ -627,6 +676,10 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
data->comp = ncpXXxh103;
data->n_comp = ARRAY_SIZE(ncpXXxh103);
break;
case TYPE_B57891S0103:
data->comp = b57891s0103;
data->n_comp = ARRAY_SIZE(b57891s0103);
break;
default:
dev_err(dev, "Unknown device type: %lu(%s)\n",
pdev_id->driver_data, pdev_id->name);

1
include/linux/platform_data/ntc_thermistor.h
View File

@ -29,6 +29,7 @@ enum ntc_thermistor_type {
TYPE_B57330V2103,
TYPE_NCPXXWF104,
TYPE_NCPXXXH103,
TYPE_B57891S0103,
};
struct ntc_thermistor_platform_data {