[PATCH] hwmon: (ntc_thermistor) Add support for ncpXXxh103

Joseph
2016-02-28T22:31:36Z

From: Joseph McNally <jmcna06@gmail.com>

This patch adds support for the Murata NCP15XH103 thermistor series.

Signed-off-by: Joseph McNally <jmcna06@gmail.com>
---
.../devicetree/bindings/hwmon/ntc_thermistor.txt | 1 +
Documentation/hwmon/ntc_thermistor | 4 +-
drivers/hwmon/Kconfig | 2 +-
drivers/hwmon/ntc_thermistor.c | 44 ++++++++++++++++++++++
include/linux/platform_data/ntc_thermistor.h | 1 +
5 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
index a04a80f..c3b9c4c 100644
--- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
+++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
@@ -10,6 +10,7 @@ Requires node properties:
"murata,ncp03wb473"
"murata,ncp15wl333"
"murata,ncp03wf104"
+ "murata,ncp15xh103"

/* Usage of vendor name "ntc" is deprecated */
<DEPRECATED> "ntc,ncp15wb473"
diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor
index 1d4cc84..8b9ff23 100644
--- a/Documentation/hwmon/ntc_thermistor
+++ b/Documentation/hwmon/ntc_thermistor
@@ -3,9 +3,9 @@ Kernel driver ntc_thermistor

Supported thermistors from Murata:
* Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473,
- NCP15WL333, NCP03WF104
+ NCP15WL333, NCP03WF104, NCP15XH103
Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473',
- 'ncp15wl333', 'ncp03wf104'
+ 'ncp15wl333', 'ncp03wf104', 'ncp15xh103'
Datasheet: Publicly available at Murata

Supported thermistors from EPCOS:
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 60fb80b..f3f13c5 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1127,7 +1127,7 @@ config SENSORS_NTC_THERMISTOR

Currently, this driver supports
NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333,
- and NCP03WF104 from Murata and B57330V2103 from EPCOS.
+ NCP03WF104 and NCP15XH103 from Murata and B57330V2103 from EPCOS.

This driver can also be built as a module. If so, the module
will be called ntc-thermistor.
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index feed306..faa6e8d 100644
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -54,6 +54,7 @@ static const struct platform_device_id ntc_thermistor_id[] = {
{ "ncp15wl333", TYPE_NCPXXWL333 },
{ "b57330v2103", TYPE_B57330V2103},
{ "ncp03wf104", TYPE_NCPXXWF104 },
+ { "ncp15xh103", TYPE_NCPXXXH103 },
{ },
};

@@ -173,6 +174,43 @@ static const struct ntc_compensation ncpXXwf104[] = {
{ .temp_c = 125, .ohm = 2522 },
};

+static const struct ntc_compensation ncpXXxh103[] = {
+ { .temp_c = -40, .ohm = 247565 },
+ { .temp_c = -35, .ohm = 181742 },
+ { .temp_c = -30, .ohm = 135128 },
+ { .temp_c = -25, .ohm = 101678 },
+ { .temp_c = -20, .ohm = 77373 },
+ { .temp_c = -15, .ohm = 59504 },
+ { .temp_c = -10, .ohm = 46222 },
+ { .temp_c = -5, .ohm = 36244 },
+ { .temp_c = 0, .ohm = 28674 },
+ { .temp_c = 5, .ohm = 22878 },
+ { .temp_c = 10, .ohm = 18399 },
+ { .temp_c = 15, .ohm = 14910 },
+ { .temp_c = 20, .ohm = 12169 },
+ { .temp_c = 25, .ohm = 10000 },
+ { .temp_c = 30, .ohm = 8271 },
+ { .temp_c = 35, .ohm = 6883 },
+ { .temp_c = 40, .ohm = 5762 },
+ { .temp_c = 45, .ohm = 4851 },
+ { .temp_c = 50, .ohm = 4105 },
+ { .temp_c = 55, .ohm = 3492 },
+ { .temp_c = 60, .ohm = 2985 },
+ { .temp_c = 65, .ohm = 2563 },
+ { .temp_c = 70, .ohm = 2211 },
+ { .temp_c = 75, .ohm = 1915 },
+ { .temp_c = 80, .ohm = 1666 },
+ { .temp_c = 85, .ohm = 1454 },
+ { .temp_c = 90, .ohm = 1275 },
+ { .temp_c = 95, .ohm = 1121 },
+ { .temp_c = 100, .ohm = 990 },
+ { .temp_c = 105, .ohm = 876 },
+ { .temp_c = 110, .ohm = 779 },
+ { .temp_c = 115, .ohm = 694 },
+ { .temp_c = 120, .ohm = 620 },
+ { .temp_c = 125, .ohm = 556 },
+};
+
/*
* The following compensation table is from the specification of EPCOS NTC
* Thermistors Datasheet
@@ -260,6 +298,8 @@ static const struct of_device_id ntc_match[] = {
.data = &ntc_thermistor_id[5]},
{ .compatible = "murata,ncp03wf104",
.data = &ntc_thermistor_id[6] },
+ { .compatible = "murata,ncp15xh103",
+ .data = &ntc_thermistor_id[7] },

/* Usage of vendor name "ntc" is deprecated */
{ .compatible = "ntc,ncp15wb473",
@@ -609,6 +649,10 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
data->comp = ncpXXwf104;
data->n_comp = ARRAY_SIZE(ncpXXwf104);
break;
+ case TYPE_NCPXXXH103:
+ data->comp = ncpXXxh103;
+ data->n_comp = ARRAY_SIZE(ncpXXxh103);
+ break;
default:
dev_err(&pdev->dev, "Unknown device type: %lu(%s)\n",
pdev_id->driver_data, pdev_id->name);
diff --git a/include/linux/platform_data/ntc_thermistor.h b/include/linux/platform_data/ntc_thermistor.h
index aed1705..698d0d5 100644
--- a/include/linux/platform_data/ntc_thermistor.h
+++ b/include/linux/platform_data/ntc_thermistor.h
@@ -28,6 +28,7 @@ enum ntc_thermistor_type {
TYPE_NCPXXWL333,
TYPE_B57330V2103,
TYPE_NCPXXWF104,
+ TYPE_NCPXXXH103,
};

struct ntc_thermistor_platform_data {
--
1.9.1