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[PATCH v5 0/4] iio: new chemical sensor framework and channel types

Started byMatt Ranostay <mranostay@gmail.com>
First post2015-09-14 05:30 +0200
Last post2015-09-20 21:00 +0200
Articles 7 — 2 participants

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  [PATCH v5 0/4] iio: new chemical sensor framework and channel types Matt Ranostay <mranostay@gmail.com> - 2015-09-14 05:30 +0200
    [PATCH v5 1/4] iio: chemical: Add IIO_CONCENTRATION channel type Matt Ranostay <mranostay@gmail.com> - 2015-09-14 05:30 +0200
      Re: [PATCH v5 1/4] iio: chemical: Add IIO_CONCENTRATION channel type Jonathan Cameron <jic23@kernel.org> - 2015-09-20 21:00 +0200
    [PATCH v5 3/4] devicetree: add SGX Sensortech vendor id Matt Ranostay <mranostay@gmail.com> - 2015-09-14 05:30 +0200
      Re: [PATCH v5 3/4] devicetree: add SGX Sensortech vendor id Jonathan Cameron <jic23@kernel.org> - 2015-09-20 21:00 +0200
    [PATCH v5 2/4] iio: resistance: add IIO_RESISTANCE channel type Matt Ranostay <mranostay@gmail.com> - 2015-09-14 05:30 +0200
      Re: [PATCH v5 2/4] iio: resistance: add IIO_RESISTANCE channel type Jonathan Cameron <jic23@kernel.org> - 2015-09-20 21:00 +0200

#1223823 — [PATCH v5 0/4] iio: new chemical sensor framework and channel types

FromMatt Ranostay <mranostay@gmail.com>
Date2015-09-14 05:30 +0200
Subject[PATCH v5 0/4] iio: new chemical sensor framework and channel types
Message-ID<q8sCS-2qP-5@gated-at.bofh.it>
Changes from v4:
* Add IIO_MOD_CO2 and IIO_MOD_VOC modifiers
* Updated IIO_RESISTANCE and IIO_CONCENTRATION documentation
* Moved the decimal point shifting to the scale value versus the reading

Matt Ranostay (4):
  iio: chemical: Add IIO_CONCENTRATION channel type
  iio: resistance: add IIO_RESISTANCE channel type
  devicetree: add SGX Sensortech vendor id
  iio: chemical: add SGX VZ89x VOC sensor support

 Documentation/ABI/testing/sysfs-bus-iio            |  19 ++
 .../ABI/testing/sysfs-bus-iio-chemical-vz89x       |   7 +
 .../devicetree/bindings/i2c/trivial-devices.txt    |   1 +
 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 drivers/iio/Kconfig                                |   1 +
 drivers/iio/Makefile                               |   1 +
 drivers/iio/chemical/Kconfig                       |  15 ++
 drivers/iio/chemical/Makefile                      |   6 +
 drivers/iio/chemical/vz89x.c                       | 237 +++++++++++++++++++++
 drivers/iio/industrialio-core.c                    |   4 +
 include/uapi/linux/iio/types.h                     |   4 +
 11 files changed, 296 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-chemical-vz89x
 create mode 100644 drivers/iio/chemical/Kconfig
 create mode 100644 drivers/iio/chemical/Makefile
 create mode 100644 drivers/iio/chemical/vz89x.c

-- 
1.9.1

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#1223824 — [PATCH v5 1/4] iio: chemical: Add IIO_CONCENTRATION channel type

FromMatt Ranostay <mranostay@gmail.com>
Date2015-09-14 05:30 +0200
Subject[PATCH v5 1/4] iio: chemical: Add IIO_CONCENTRATION channel type
Message-ID<q8sCT-2qP-17@gated-at.bofh.it>
In reply to#1223823
There are air quality sensors that report data back in parts per million
of VOC (Volatile Organic Compounds) which are usually indexed from CO2
or another common pollutant.

This patchset adds an IIO_CONCENTRATION type that returns a percentage
of substance because no other channels types fit this use case.
Modifiers for IIO_MOD_CO2 and IIO_MOD_VOC gas types are defined.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
---
 Documentation/ABI/testing/sysfs-bus-iio | 11 +++++++++++
 drivers/iio/industrialio-core.c         |  3 +++
 include/uapi/linux/iio/types.h          |  3 +++
 3 files changed, 17 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 42d360f..682c070 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1459,3 +1459,14 @@ Description:
 		measurements and return the average value as output data. Each
 		value resulted from <type>[_name]_oversampling_ratio measurements
 		is considered as one sample for <type>[_name]_sampling_frequency.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_concentration_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
+KernelVersion:	4.3
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Raw (unscaled no offset etc.) percentage reading of a substance.
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index b3fcc2c..8eb6064 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -75,6 +75,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_ENERGY] = "energy",
 	[IIO_DISTANCE] = "distance",
 	[IIO_VELOCITY] = "velocity",
+	[IIO_CONCENTRATION] = "concentration",
 };
 
 static const char * const iio_modifier_names[] = {
@@ -111,6 +112,8 @@ static const char * const iio_modifier_names[] = {
 	[IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)",
 	[IIO_MOD_I] = "i",
 	[IIO_MOD_Q] = "q",
+	[IIO_MOD_CO2] = "co2",
+	[IIO_MOD_VOC] = "voc",
 };
 
 /* relies on pairs of these shared then separate */
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index 2f8b117..1e4c4e3 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -35,6 +35,7 @@ enum iio_chan_type {
 	IIO_ENERGY,
 	IIO_DISTANCE,
 	IIO_VELOCITY,
+	IIO_CONCENTRATION,
 };
 
 enum iio_modifier {
@@ -72,6 +73,8 @@ enum iio_modifier {
 	IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z,
 	IIO_MOD_I,
 	IIO_MOD_Q,
+	IIO_MOD_CO2,
+	IIO_MOD_VOC,
 };
 
 enum iio_event_type {
-- 
1.9.1

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#1228940 — Re: [PATCH v5 1/4] iio: chemical: Add IIO_CONCENTRATION channel type

FromJonathan Cameron <jic23@kernel.org>
Date2015-09-20 21:00 +0200
SubjectRe: [PATCH v5 1/4] iio: chemical: Add IIO_CONCENTRATION channel type
Message-ID<qaS0a-8j8-3@gated-at.bofh.it>
In reply to#1223824
On 14/09/15 04:26, Matt Ranostay wrote:
> There are air quality sensors that report data back in parts per million
> of VOC (Volatile Organic Compounds) which are usually indexed from CO2
> or another common pollutant.
> 
> This patchset adds an IIO_CONCENTRATION type that returns a percentage
> of substance because no other channels types fit this use case.
> Modifiers for IIO_MOD_CO2 and IIO_MOD_VOC gas types are defined.
> 
> Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Applied to the togreg branch of iio.git - initially pushed out as
testing for the autobuilders to play with it.

Thanks,

Jonathan
> ---
>  Documentation/ABI/testing/sysfs-bus-iio | 11 +++++++++++
>  drivers/iio/industrialio-core.c         |  3 +++
>  include/uapi/linux/iio/types.h          |  3 +++
>  3 files changed, 17 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 42d360f..682c070 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -1459,3 +1459,14 @@ Description:
>  		measurements and return the average value as output data. Each
>  		value resulted from <type>[_name]_oversampling_ratio measurements
>  		is considered as one sample for <type>[_name]_sampling_frequency.
> +
> +What:		/sys/bus/iio/devices/iio:deviceX/in_concentration_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
> +KernelVersion:	4.3
> +Contact:	linux-iio@vger.kernel.org
> +Description:
> +		Raw (unscaled no offset etc.) percentage reading of a substance.
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index b3fcc2c..8eb6064 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -75,6 +75,7 @@ static const char * const iio_chan_type_name_spec[] = {
>  	[IIO_ENERGY] = "energy",
>  	[IIO_DISTANCE] = "distance",
>  	[IIO_VELOCITY] = "velocity",
> +	[IIO_CONCENTRATION] = "concentration",
>  };
>  
>  static const char * const iio_modifier_names[] = {
> @@ -111,6 +112,8 @@ static const char * const iio_modifier_names[] = {
>  	[IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)",
>  	[IIO_MOD_I] = "i",
>  	[IIO_MOD_Q] = "q",
> +	[IIO_MOD_CO2] = "co2",
> +	[IIO_MOD_VOC] = "voc",
>  };
>  
>  /* relies on pairs of these shared then separate */
> diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
> index 2f8b117..1e4c4e3 100644
> --- a/include/uapi/linux/iio/types.h
> +++ b/include/uapi/linux/iio/types.h
> @@ -35,6 +35,7 @@ enum iio_chan_type {
>  	IIO_ENERGY,
>  	IIO_DISTANCE,
>  	IIO_VELOCITY,
> +	IIO_CONCENTRATION,
>  };
>  
>  enum iio_modifier {
> @@ -72,6 +73,8 @@ enum iio_modifier {
>  	IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z,
>  	IIO_MOD_I,
>  	IIO_MOD_Q,
> +	IIO_MOD_CO2,
> +	IIO_MOD_VOC,
>  };
>  
>  enum iio_event_type {
> 

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#1223825 — [PATCH v5 3/4] devicetree: add SGX Sensortech vendor id

FromMatt Ranostay <mranostay@gmail.com>
Date2015-09-14 05:30 +0200
Subject[PATCH v5 3/4] devicetree: add SGX Sensortech vendor id
Message-ID<q8sCT-2qP-21@gated-at.bofh.it>
In reply to#1223823
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
---
 Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index ac5f0c3..281e8f0 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -191,6 +191,7 @@ sbs	Smart Battery System
 schindler	Schindler
 seagate	Seagate Technology PLC
 semtech	Semtech Corporation
+sgx	SGX Sensortech
 sharp	Sharp Corporation
 sil	Silicon Image
 silabs	Silicon Laboratories
-- 
1.9.1

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#1228941 — Re: [PATCH v5 3/4] devicetree: add SGX Sensortech vendor id

FromJonathan Cameron <jic23@kernel.org>
Date2015-09-20 21:00 +0200
SubjectRe: [PATCH v5 3/4] devicetree: add SGX Sensortech vendor id
Message-ID<qaS0a-8j8-5@gated-at.bofh.it>
In reply to#1223825
On 14/09/15 04:26, Matt Ranostay wrote:
> Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Applied. Note there was fuzz in my tree as I am lagging mainline
somewhat.  However it is pretty obvious how to fix up merge
issues in this file so lets not worry about that ;)

Jonathan
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index ac5f0c3..281e8f0 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -191,6 +191,7 @@ sbs	Smart Battery System
>  schindler	Schindler
>  seagate	Seagate Technology PLC
>  semtech	Semtech Corporation
> +sgx	SGX Sensortech
>  sharp	Sharp Corporation
>  sil	Silicon Image
>  silabs	Silicon Laboratories
> 

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#1223826 — [PATCH v5 2/4] iio: resistance: add IIO_RESISTANCE channel type

FromMatt Ranostay <mranostay@gmail.com>
Date2015-09-14 05:30 +0200
Subject[PATCH v5 2/4] iio: resistance: add IIO_RESISTANCE channel type
Message-ID<q8sCT-2qP-19@gated-at.bofh.it>
In reply to#1223823
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
---
 Documentation/ABI/testing/sysfs-bus-iio | 8 ++++++++
 drivers/iio/industrialio-core.c         | 1 +
 include/uapi/linux/iio/types.h          | 1 +
 3 files changed, 10 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 682c070..a91af51 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1470,3 +1470,11 @@ KernelVersion:	4.3
 Contact:	linux-iio@vger.kernel.org
 Description:
 		Raw (unscaled no offset etc.) percentage reading of a substance.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_resistance_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
+KernelVersion:	4.3
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Raw (unscaled no offset etc.) resistance reading that can be processed
+		into an ohm value.
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 8eb6064..80439a6 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -76,6 +76,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_DISTANCE] = "distance",
 	[IIO_VELOCITY] = "velocity",
 	[IIO_CONCENTRATION] = "concentration",
+	[IIO_RESISTANCE] = "resistance",
 };
 
 static const char * const iio_modifier_names[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index 1e4c4e3..7c63bd6 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -36,6 +36,7 @@ enum iio_chan_type {
 	IIO_DISTANCE,
 	IIO_VELOCITY,
 	IIO_CONCENTRATION,
+	IIO_RESISTANCE,
 };
 
 enum iio_modifier {
-- 
1.9.1

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#1228942 — Re: [PATCH v5 2/4] iio: resistance: add IIO_RESISTANCE channel type

FromJonathan Cameron <jic23@kernel.org>
Date2015-09-20 21:00 +0200
SubjectRe: [PATCH v5 2/4] iio: resistance: add IIO_RESISTANCE channel type
Message-ID<qaS0a-8j8-7@gated-at.bofh.it>
In reply to#1223826
On 14/09/15 04:26, Matt Ranostay wrote:
> Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Applied to the togreg branch of iio.git - initially pushed out as testing for the
autobuilders to play with it.

Thanks,

Jonathan
> ---
>  Documentation/ABI/testing/sysfs-bus-iio | 8 ++++++++
>  drivers/iio/industrialio-core.c         | 1 +
>  include/uapi/linux/iio/types.h          | 1 +
>  3 files changed, 10 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 682c070..a91af51 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -1470,3 +1470,11 @@ KernelVersion:	4.3
>  Contact:	linux-iio@vger.kernel.org
>  Description:
>  		Raw (unscaled no offset etc.) percentage reading of a substance.
> +
> +What:		/sys/bus/iio/devices/iio:deviceX/in_resistance_raw
> +What:		/sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
> +KernelVersion:	4.3
> +Contact:	linux-iio@vger.kernel.org
> +Description:
> +		Raw (unscaled no offset etc.) resistance reading that can be processed
> +		into an ohm value.
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index 8eb6064..80439a6 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -76,6 +76,7 @@ static const char * const iio_chan_type_name_spec[] = {
>  	[IIO_DISTANCE] = "distance",
>  	[IIO_VELOCITY] = "velocity",
>  	[IIO_CONCENTRATION] = "concentration",
> +	[IIO_RESISTANCE] = "resistance",
>  };
>  
>  static const char * const iio_modifier_names[] = {
> diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
> index 1e4c4e3..7c63bd6 100644
> --- a/include/uapi/linux/iio/types.h
> +++ b/include/uapi/linux/iio/types.h
> @@ -36,6 +36,7 @@ enum iio_chan_type {
>  	IIO_DISTANCE,
>  	IIO_VELOCITY,
>  	IIO_CONCENTRATION,
> +	IIO_RESISTANCE,
>  };
>  
>  enum iio_modifier {
> 

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