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Fri, 15 Aug 2025 05:57:26 -0400 From: Antoniu Miclaus To: , , , , , CC: Antoniu Miclaus Subject: [PATCH v4 2/5] iio: add power and energy measurement modifiers Date: Fri, 15 Aug 2025 09:56:35 +0000 Message-ID: <20250815095713.9830-3-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250815095713.9830-1-antoniu.miclaus@analog.com> References: <20250815095713.9830-1-antoniu.miclaus@analog.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Authority-Analysis: v=2.4 cv=BNezrEQG c=1 sm=1 tr=0 ts=689f048b cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=2OwXVqhp2XgA:10 a=gAnH3GRIAAAA:8 a=VwQbUJbxAAAA:8 a=skdMUFx4Ewza9nfW7JEA:9 X-Proofpoint-GUID: hK7kfPyQi-5rM1hdsj22UuNM4TiC3DsA X-Proofpoint-ORIG-GUID: hK7kfPyQi-5rM1hdsj22UuNM4TiC3DsA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODEzMDIyNCBTYWx0ZWRfX20ku1B1l6Ui8 vD8GK3ZABQ4Sg/WtX01k3pHOn3bkeKNkOaLjh0FutUFum+MIqjAcEP+AKKmIY0fSzHuy339q9op c6Gin+5b0HO1BPgAXC48JKX/felTlmlwSPdMv5BiGq8LeU7ejaWa0p2tGXrhLahIJcdK0hv6fwR uWNXHSgLMLxU/lsZM6bp26h4PiFYSQoAcQKgOlMl24eLrXbIho4KuxEz5UbEg486CMJ1cHslP0p MIVK7YzePpxvipEzL/bht3nZSzpeP6lBvohZLLb0axWGwMwymbdDaORDHt5BfsX5N/wGl37bi8p jKhxBpM6O+hIKZKKhTmUFC3XOQybD/Ta5CJoPpBa2uRUz6pRRZvXdqT3pEqVgurX0UZEjtvPeHQ fSXw1d98 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-15_03,2025-08-14_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 bulkscore=0 impostorscore=0 malwarescore=0 spamscore=0 priorityscore=1501 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508130224 Content-Type: text/plain; charset="utf-8" Add new IIO modifiers to support power and energy measurement devices: Power modifiers: - IIO_MOD_ACTIVE: Real power consumed by the load - IIO_MOD_REACTIVE: Power that oscillates between source and load - IIO_MOD_APPARENT: Magnitude of complex power - IIO_MOD_FUND_REACTIVE: Reactive power at fundamental frequency - IIO_MOD_FACTOR: Power factor (ratio of active to apparent power) Signal quality modifiers: - IIO_MOD_RMS: Root Mean Square value These modifiers enable proper representation of power measurement devices like energy meters and power analyzers. Signed-off-by: Antoniu Miclaus --- changes in v4: - add proper KernelVersion and Contact fields to ABI documentation - add detailed description for power factor measurement - add altcurrent RMS measurement support Documentation/ABI/testing/sysfs-bus-iio | 27 +++++++++++++++++++++++++ drivers/iio/industrialio-core.c | 5 +++++ include/linux/iio/types.h | 1 + include/uapi/linux/iio/types.h | 4 ++++ 4 files changed, 37 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/te= sting/sysfs-bus-iio index 2fb2cea4b192..9d283b23d3c0 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -167,7 +167,17 @@ Description: is required is a consistent labeling. Units after application of scale and offset are millivolts. =20 +What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_rms_raw +KernelVersion: 6.15 +Contact: linux-iio@vger.kernel.org +Description: + Raw (unscaled) RMS voltage measurement from + channel Y. Units after application of scale and offset are millivolts. + What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw +What: /sys/bus/iio/devices/iio:deviceX/in_powerY_active_raw +What: /sys/bus/iio/devices/iio:deviceX/in_powerY_reactive_raw +What: /sys/bus/iio/devices/iio:deviceX/in_powerY_apparent_raw KernelVersion: 4.5 Contact: linux-iio@vger.kernel.org Description: @@ -176,6 +186,13 @@ Description: unique to allow association with event codes. Units after application of scale and offset are milliwatts. =20 +What: /sys/bus/iio/devices/iio:deviceX/in_powerY_powerfactor +KernelVersion: 6.15 +Contact: linux-iio@vger.kernel.org +Description: + Power factor measurement from channel Y. Power factor is the + ratio of active power to apparent power. The value is unitless. + What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw KernelVersion: 3.2 Contact: linux-iio@vger.kernel.org @@ -1569,6 +1586,9 @@ Description: =20 What: /sys/.../iio:deviceX/in_energy_input What: /sys/.../iio:deviceX/in_energy_raw +What: /sys/.../iio:deviceX/in_energyY_active_raw +What: /sys/.../iio:deviceX/in_energyY_reactive_raw +What: /sys/.../iio:deviceX/in_energyY_apparent_raw KernelVersion: 4.0 Contact: linux-iio@vger.kernel.org Description: @@ -1707,6 +1727,13 @@ Description: component of the signal while the 'q' channel contains the quadrature component. =20 +What: /sys/bus/iio/devices/iio:deviceX/in_altcurrentY_rms_raw +KernelVersion: 6.15 +Contact: linux-iio@vger.kernel.org +Description: + Raw (unscaled no bias removal etc.) RMS current measurement from + channel Y. Units after application of scale and offset are milliamps. + What: /sys/.../iio:deviceX/in_energy_en What: /sys/.../iio:deviceX/in_distance_en What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-cor= e.c index 8c9098668772..9e372ed38552 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -153,6 +153,10 @@ static const char * const iio_modifier_names[] =3D { [IIO_MOD_PITCH] =3D "pitch", [IIO_MOD_YAW] =3D "yaw", [IIO_MOD_ROLL] =3D "roll", + [IIO_MOD_RMS] =3D "rms", + [IIO_MOD_ACTIVE] =3D "active", + [IIO_MOD_REACTIVE] =3D "reactive", + [IIO_MOD_APPARENT] =3D "apparent", }; =20 /* relies on pairs of these shared then separate */ @@ -190,6 +194,7 @@ static const char * const iio_chan_info_postfix[] =3D { [IIO_CHAN_INFO_ZEROPOINT] =3D "zeropoint", [IIO_CHAN_INFO_TROUGH] =3D "trough_raw", [IIO_CHAN_INFO_CONVDELAY] =3D "convdelay", + [IIO_CHAN_INFO_POWERFACTOR] =3D "powerfactor", }; /** * iio_device_id() - query the unique ID for the device diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index ad2761efcc83..34eebad12d2c 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -70,6 +70,7 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_ZEROPOINT, IIO_CHAN_INFO_TROUGH, IIO_CHAN_INFO_CONVDELAY, + IIO_CHAN_INFO_POWERFACTOR, }; =20 #endif /* _IIO_TYPES_H_ */ diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h index 3c3cc1497a1e..6d269b844271 100644 --- a/include/uapi/linux/iio/types.h +++ b/include/uapi/linux/iio/types.h @@ -109,6 +109,10 @@ enum iio_modifier { IIO_MOD_ROLL, IIO_MOD_LIGHT_UVA, IIO_MOD_LIGHT_UVB, + IIO_MOD_RMS, + IIO_MOD_ACTIVE, + IIO_MOD_REACTIVE, + IIO_MOD_APPARENT, }; =20 enum iio_event_type { --=20 2.43.0