[PATCH 2/4] hwmon: ntc_thermistor: Use the manufacturer name properly
Mark Rutland
mark.rutland at arm.com
Tue Jun 24 06:32:31 PDT 2014
On Tue, Jun 24, 2014 at 01:19:14PM +0100, Naveen Krishna Chatradhi wrote:
> Murata Manufacturing Co., Ltd is the vendor for
> NTC (Negative Temperature coefficient) based Thermistors.
> But, the driver extensively uses "NTC" as the vendor name.
>
> This patch corrects the vendor name also updates the
> compatibility strings according to the vendor-prefix.txt
>
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen at samsung.com>
> Cc: Guenter Roeck <linux at roeck-us.net>
> ---
> This changes is needed for the following reasons
>
> 1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
> Thus, giving an error when checked with scripts/checkpatch.pl
> 2. Murata Manufacturing Co., Ltd. Is the vendor for the
> NTC (Negative Temperature Coefficient) based thermistors.
> Hence, "murata" is the right vendor-prefix, Not "ntc".
> 3. NTC is a technology used, But the prefix "ntc" is wrongly
> and heavily used in the driver and the documentation.
>
> .../devicetree/bindings/arm/samsung/exynos-adc.txt | 2 +-
> .../devicetree/bindings/hwmon/ntc_thermistor.txt | 12 ++++++------
> Documentation/hwmon/ntc_thermistor | 8 ++++----
> drivers/hwmon/Kconfig | 5 +++--
> drivers/hwmon/ntc_thermistor.c | 12 ++++++------
> 5 files changed, 20 insertions(+), 19 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
> index 5d49f2b..832fe8c 100644
> --- a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
> +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
> @@ -48,7 +48,7 @@ adc at 12D10000 {
>
> /* NTC thermistor is a hwmon device */
> ncp15wb473 at 0 {
> - compatible = "ntc,ncp15wb473";
> + compatible = "murata,ncp15wb473";
> pullup-uv = <1800000>;
> pullup-ohm = <47000>;
> pulldown-ohm = <0>;
> diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> index c6f6667..4e9f344 100644
> --- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> +++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> @@ -3,11 +3,11 @@ NTC Thermistor hwmon sensors
>
> Requires node properties:
> - "compatible" value : one of
> - "ntc,ncp15wb473"
> - "ntc,ncp18wb473"
> - "ntc,ncp21wb473"
> - "ntc,ncp03wb473"
> - "ntc,ncp15wl333"
> + "murata,ncp15wb473"
> + "murata,ncp18wb473"
> + "murata,ncp21wb473"
> + "murata,ncp03wb473"
> + "murata,ncp15wl333"
So we're outright changing these rather than deprecating the existing
forms?
In general we've pushed back on changes like this, and requested that
the old strings are kept in both documentation and code as deprecated
forms.
Can you guarantee that changing this is not going to stop someone's
board worknig properly? I suspect not.
Mark.
> - "pullup-uv" Pull up voltage in micro volts
> - "pullup-ohm" Pull up resistor value in ohms
> - "pulldown-ohm" Pull down resistor value in ohms
> @@ -21,7 +21,7 @@ Read more about iio bindings at
>
> Example:
> ncp15wb473 at 0 {
> - compatible = "ntc,ncp15wb473";
> + compatible = "murata,ncp15wb473";
> pullup-uv = <1800000>;
> pullup-ohm = <47000>;
> pulldown-ohm = <0>;
> diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor
> index 3bfda94..057b770 100644
> --- a/Documentation/hwmon/ntc_thermistor
> +++ b/Documentation/hwmon/ntc_thermistor
> @@ -1,7 +1,7 @@
> Kernel driver ntc_thermistor
> =================
>
> -Supported thermistors:
> +Supported thermistors from Murata:
> * Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333
> Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333'
> Datasheet: Publicly available at Murata
> @@ -15,9 +15,9 @@ Authors:
> Description
> -----------
>
> -The NTC thermistor is a simple thermistor that requires users to provide the
> -resistance and lookup the corresponding compensation table to get the
> -temperature input.
> +The NTC (Negative Temperature Coefficient) thermistor is a simple thermistor
> +that requires users to provide the resistance and lookup the corresponding
> +compensation table to get the temperature input.
>
> The NTC driver provides lookup tables with a linear approximation function
> and four circuit models with an option not to use any of the four models.
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index 08531a1..154851b 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -1052,7 +1052,7 @@ config SENSORS_PC87427
> will be called pc87427.
>
> config SENSORS_NTC_THERMISTOR
> - tristate "NTC thermistor support"
> + tristate "NTC based thermistor support from Murata"
> depends on !OF || IIO=n || IIO
> help
> This driver supports NTC thermistors sensor reading and its
> @@ -1060,7 +1060,8 @@ config SENSORS_NTC_THERMISTOR
> send notifications about the temperature.
>
> Currently, this driver supports
> - NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333.
> + NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333
> + from Murata.
>
> 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 e76feb86..6c38fc8 100644
> --- a/drivers/hwmon/ntc_thermistor.c
> +++ b/drivers/hwmon/ntc_thermistor.c
> @@ -163,15 +163,15 @@ static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
> }
>
> static const struct of_device_id ntc_match[] = {
> - { .compatible = "ntc,ncp15wb473",
> + { .compatible = "murata,ncp15wb473",
> .data = &ntc_thermistor_id[0] },
> - { .compatible = "ntc,ncp18wb473",
> + { .compatible = "murata,ncp18wb473",
> .data = &ntc_thermistor_id[1] },
> - { .compatible = "ntc,ncp21wb473",
> + { .compatible = "murata,ncp21wb473",
> .data = &ntc_thermistor_id[2] },
> - { .compatible = "ntc,ncp03wb473",
> + { .compatible = "murata,ncp03wb473",
> .data = &ntc_thermistor_id[3] },
> - { .compatible = "ntc,ncp15wl333",
> + { .compatible = "murata,ncp15wl333",
> .data = &ntc_thermistor_id[4] },
> { },
> };
> @@ -534,7 +534,7 @@ static struct platform_driver ntc_thermistor_driver = {
>
> module_platform_driver(ntc_thermistor_driver);
>
> -MODULE_DESCRIPTION("NTC Thermistor Driver");
> +MODULE_DESCRIPTION("NTC based Thermistor Driver from Murata");
> MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham at samsung.com>");
> MODULE_LICENSE("GPL");
> MODULE_ALIAS("platform:ntc-thermistor");
> --
> 1.7.9.5
>
> --
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