From 17abc9ec68b73ddeb262a507a62421016b9c54d5 Mon Sep 17 00:00:00 2001 From: Tomasz Duszynski Date: Fri, 14 Dec 2018 19:28:01 +0100 Subject: iio: add IIO_MASSCONCENTRATION channel type Measuring particulate matter in ug / m3 (micro-grams per cubic meter) is de facto standard. Existing air quality sensors usually follow this convention and are capable of returning measurements using this unit. IIO currently does not offer suitable channel type for this type of measurements hence this patch adds this. In addition, extra modifiers are introduced used for distinguishing between fine pm1, pm2p5 and coarse pm4, pm10 particle measurements, i.e IIO_MOD_PM1, IIO_MOD_PM25 and IIO_MOD_PM4, IIO_MOD_PM10. pmX consists of particles with aerodynamic diameter less or equal to X micrometers. Signed-off-by: Tomasz Duszynski Acked-by: Matt Ranostay Signed-off-by: Jonathan Cameron --- include/uapi/linux/iio/types.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h index 92baabc103ac..c59adac24b1c 100644 --- a/include/uapi/linux/iio/types.h +++ b/include/uapi/linux/iio/types.h @@ -46,6 +46,7 @@ enum iio_chan_type { IIO_GRAVITY, IIO_POSITIONRELATIVE, IIO_PHASE, + IIO_MASSCONCENTRATION, }; enum iio_modifier { @@ -87,6 +88,10 @@ enum iio_modifier { IIO_MOD_VOC, IIO_MOD_LIGHT_UV, IIO_MOD_LIGHT_DUV, + IIO_MOD_PM1, + IIO_MOD_PM2P5, + IIO_MOD_PM4, + IIO_MOD_PM10, }; enum iio_event_type { -- cgit v1.2.3 From b170f7d48443d1ea3e4ffbf409025b5e5b1146fe Mon Sep 17 00:00:00 2001 From: Andreas Brauchli Date: Thu, 13 Dec 2018 15:43:22 +0100 Subject: iio: Add modifiers for ethanol and H2 gases Add ethanol and H2 gas modifiers: * IIO_MOD_ETHANOL * IIO_MOD_H2 Signed-off-by: Andreas Brauchli Acked-by: Matt Ranostay Signed-off-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-iio | 4 ++++ include/uapi/linux/iio/types.h | 2 ++ tools/iio/iio_event_monitor.c | 4 ++++ 3 files changed, 10 insertions(+) (limited to 'include') diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 67fd88bf7910..864f8efd12e5 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -1554,6 +1554,10 @@ 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_ethanol_raw +What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw +What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw +What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_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 diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h index c59adac24b1c..fdd81affca4b 100644 --- a/include/uapi/linux/iio/types.h +++ b/include/uapi/linux/iio/types.h @@ -92,6 +92,8 @@ enum iio_modifier { IIO_MOD_PM2P5, IIO_MOD_PM4, IIO_MOD_PM10, + IIO_MOD_ETHANOL, + IIO_MOD_H2, }; enum iio_event_type { diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c index f6b8003fbe3c..7bf9bde28bcc 100644 --- a/tools/iio/iio_event_monitor.c +++ b/tools/iio/iio_event_monitor.c @@ -115,6 +115,8 @@ static const char * const iio_modifier_names[] = { [IIO_MOD_I] = "i", [IIO_MOD_Q] = "q", [IIO_MOD_CO2] = "co2", + [IIO_MOD_ETHANOL] = "ethanol", + [IIO_MOD_H2] = "h2", [IIO_MOD_VOC] = "voc", [IIO_MOD_PM1] = "pm1", [IIO_MOD_PM2P5] = "pm2p5", @@ -205,6 +207,8 @@ static bool event_is_known(struct iio_event_data *event) case IIO_MOD_I: case IIO_MOD_Q: case IIO_MOD_CO2: + case IIO_MOD_ETHANOL: + case IIO_MOD_H2: case IIO_MOD_VOC: case IIO_MOD_PM1: case IIO_MOD_PM2P5: -- cgit v1.2.3 From f38ab20b749da84e3df1f8c9240ddc791b0d5983 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Thu, 20 Dec 2018 14:59:33 +0800 Subject: iio: st_accel: use ACPI orientation data Platform-specific ST accelerometer mount matrix information can be provided by returning a package of 6 integers from the ACPI _ONT method. This has been seen on Acer products such as Veriton Z4860G, Z6860G and A890, which include a ST SMO8840 sensor. We have also confirmed experimentally that the Windows driver uses such information. The _ONT data format was explained by a ST vendor contact. However, strangely enough, the _ONT transformations must be applied after first applying another mount matrix which we determined experimentally. ST have not commented on why this is the case, but we imagine that perhaps earlier devices (before _ONT was introduced) required this translation and hence it became 'standard.' Interpret the _ONT data and export the equivalent mount matrix to userspace. If no _ONT data is present, no mount matrix is exported. Signed-off-by: Daniel Drake Signed-off-by: Jonathan Cameron --- drivers/iio/accel/st_accel_core.c | 171 +++++++++++++++++++++++++++++++++- include/linux/iio/common/st_sensors.h | 1 + 2 files changed, 171 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c index f7b471121508..a3c0916479fa 100644 --- a/drivers/iio/accel/st_accel_core.c +++ b/drivers/iio/accel/st_accel_core.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -918,12 +919,167 @@ static const struct iio_trigger_ops st_accel_trigger_ops = { #define ST_ACCEL_TRIGGER_OPS NULL #endif +static const struct iio_mount_matrix * +get_mount_matrix(const struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + struct st_sensor_data *adata = iio_priv(indio_dev); + + return adata->mount_matrix; +} + +static const struct iio_chan_spec_ext_info mount_matrix_ext_info[] = { + IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, get_mount_matrix), + { }, +}; + +/* Read ST-specific _ONT orientation data from ACPI and generate an + * appropriate mount matrix. + */ +static int apply_acpi_orientation(struct iio_dev *indio_dev, + struct iio_chan_spec *channels) +{ +#ifdef CONFIG_ACPI + struct st_sensor_data *adata = iio_priv(indio_dev); + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; + struct acpi_device *adev; + union acpi_object *ont; + union acpi_object *elements; + acpi_status status; + int ret = -EINVAL; + unsigned int val; + int i, j; + int final_ont[3][3] = { { 0 }, }; + + /* For some reason, ST's _ONT translation does not apply directly + * to the data read from the sensor. Another translation must be + * performed first, as described by the matrix below. Perhaps + * ST required this specific translation for the first product + * where the device was mounted? + */ + const int default_ont[3][3] = { + { 0, 1, 0 }, + { -1, 0, 0 }, + { 0, 0, -1 }, + }; + + + adev = ACPI_COMPANION(adata->dev); + if (!adev) + return 0; + + /* Read _ONT data, which should be a package of 6 integers. */ + status = acpi_evaluate_object(adev->handle, "_ONT", NULL, &buffer); + if (status == AE_NOT_FOUND) { + return 0; + } else if (ACPI_FAILURE(status)) { + dev_warn(&indio_dev->dev, "failed to execute _ONT: %d\n", + status); + return status; + } + + ont = buffer.pointer; + if (ont->type != ACPI_TYPE_PACKAGE || ont->package.count != 6) + goto out; + + /* The first 3 integers provide axis order information. + * e.g. 0 1 2 would indicate normal X,Y,Z ordering. + * e.g. 1 0 2 indicates that data arrives in order Y,X,Z. + */ + elements = ont->package.elements; + for (i = 0; i < 3; i++) { + if (elements[i].type != ACPI_TYPE_INTEGER) + goto out; + + val = elements[i].integer.value; + if (val < 0 || val > 2) + goto out; + + /* Avoiding full matrix multiplication, we simply reorder the + * columns in the default_ont matrix according to the + * ordering provided by _ONT. + */ + final_ont[0][i] = default_ont[0][val]; + final_ont[1][i] = default_ont[1][val]; + final_ont[2][i] = default_ont[2][val]; + } + + /* The final 3 integers provide sign flip information. + * 0 means no change, 1 means flip. + * e.g. 0 0 1 means that Z data should be sign-flipped. + * This is applied after the axis reordering from above. + */ + elements += 3; + for (i = 0; i < 3; i++) { + if (elements[i].type != ACPI_TYPE_INTEGER) + goto out; + + val = elements[i].integer.value; + if (val != 0 && val != 1) + goto out; + if (!val) + continue; + + /* Flip the values in the indicated column */ + final_ont[0][i] *= -1; + final_ont[1][i] *= -1; + final_ont[2][i] *= -1; + } + + /* Convert our integer matrix to a string-based iio_mount_matrix */ + adata->mount_matrix = devm_kmalloc(&indio_dev->dev, + sizeof(*adata->mount_matrix), + GFP_KERNEL); + if (!adata->mount_matrix) { + ret = -ENOMEM; + goto out; + } + + for (i = 0; i < 3; i++) { + for (j = 0; j < 3; j++) { + int matrix_val = final_ont[i][j]; + char *str_value; + + switch (matrix_val) { + case -1: + str_value = "-1"; + break; + case 0: + str_value = "0"; + break; + case 1: + str_value = "1"; + break; + default: + goto out; + } + adata->mount_matrix->rotation[i * 3 + j] = str_value; + } + } + + /* Expose the mount matrix via ext_info */ + for (i = 0; i < indio_dev->num_channels; i++) + channels[i].ext_info = mount_matrix_ext_info; + + ret = 0; + dev_info(&indio_dev->dev, "computed mount matrix from ACPI\n"); + +out: + kfree(buffer.pointer); + return ret; +#else /* !CONFIG_ACPI */ + return 0; +#endif +} + int st_accel_common_probe(struct iio_dev *indio_dev) { struct st_sensor_data *adata = iio_priv(indio_dev); struct st_sensors_platform_data *pdata = (struct st_sensors_platform_data *)adata->dev->platform_data; int irq = adata->get_irq_data_ready(indio_dev); + struct iio_chan_spec *channels; + size_t channels_size; int err; indio_dev->modes = INDIO_DIRECT_MODE; @@ -942,9 +1098,22 @@ int st_accel_common_probe(struct iio_dev *indio_dev) adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS; adata->multiread_bit = adata->sensor_settings->multi_read_bit; - indio_dev->channels = adata->sensor_settings->ch; indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; + channels_size = indio_dev->num_channels * sizeof(struct iio_chan_spec); + channels = devm_kmemdup(&indio_dev->dev, + adata->sensor_settings->ch, + channels_size, GFP_KERNEL); + if (!channels) { + err = -ENOMEM; + goto st_accel_power_off; + } + + if (apply_acpi_orientation(indio_dev, channels)) + dev_warn(&indio_dev->dev, + "failed to apply ACPI orientation data: %d\n", err); + + indio_dev->channels = channels; adata->current_fullscale = (struct st_sensor_fullscale_avl *) &adata->sensor_settings->fs.fs_avl[0]; adata->odr = adata->sensor_settings->odr.odr_avl[0].hz; diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index 8092b8e7f37e..45e9667f0a8c 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -260,6 +260,7 @@ struct st_sensor_settings { struct st_sensor_data { struct device *dev; struct iio_trigger *trig; + struct iio_mount_matrix *mount_matrix; struct st_sensor_settings *sensor_settings; struct st_sensor_fullscale_avl *current_fullscale; struct regulator *vdd; -- cgit v1.2.3 From 7cf74d515b56de0433aebf0c80872d331dd183a2 Mon Sep 17 00:00:00 2001 From: Artur Rojek Date: Mon, 4 Feb 2019 01:15:13 +0100 Subject: dt-bindings: iio/adc: Add bindings for Ingenic JZ47xx SoCs ADC. Add device tree bindings for the ADC controller on JZ47xx SoCs, used by the ingenic-adc driver. Signed-off-by: Artur Rojek Signed-off-by: Jonathan Cameron --- include/dt-bindings/iio/adc/ingenic,adc.h | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 include/dt-bindings/iio/adc/ingenic,adc.h (limited to 'include') diff --git a/include/dt-bindings/iio/adc/ingenic,adc.h b/include/dt-bindings/iio/adc/ingenic,adc.h new file mode 100644 index 000000000000..82706b2706ac --- /dev/null +++ b/include/dt-bindings/iio/adc/ingenic,adc.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _DT_BINDINGS_IIO_ADC_INGENIC_ADC_H +#define _DT_BINDINGS_IIO_ADC_INGENIC_ADC_H + +/* ADC channel idx. */ +#define INGENIC_ADC_AUX 0 +#define INGENIC_ADC_BATTERY 1 + +#endif -- cgit v1.2.3