What: /sys/bus/iio/devices/iio:deviceX/in_concentration_VOC_short_raw
Date: September 2015
KernelVersion: 4.3
-Contact: Matt Ranostay <mranostay@gmail.com>
+Contact: Matt Ranostay <matt.ranostay@konsulko.com>
Description:
Get the raw calibration VOC value from the sensor.
This value has little application outside of calibration.
What /sys/bus/iio/devices/iio:deviceX/in_proximity_input
Date: March 2014
KernelVersion: 3.15
-Contact: Matt Ranostay <mranostay@gmail.com>
+Contact: Matt Ranostay <matt.ranostay@konsulko.com>
Description:
Get the current distance in meters of storm (1km steps)
1000-40000 = distance in meters
What /sys/bus/iio/devices/iio:deviceX/sensor_sensitivity
Date: March 2014
KernelVersion: 3.15
-Contact: Matt Ranostay <mranostay@gmail.com>
+Contact: Matt Ranostay <matt.ranostay@konsulko.com>
Description:
Show or set the gain boost of the amp, from 0-31 range.
18 = indoors (default)
--- /dev/null
+* X-Powers AXP ADC bindings
+
+Required properties:
+ - compatible: should be one of:
+ - "x-powers,axp209-adc",
+ - "x-powers,axp221-adc",
+ - "x-powers,axp813-adc",
+ - #io-channel-cells: should be 1,
+
+Example:
+
+&axp22x {
+ adc {
+ compatible = "x-powers,axp221-adc";
+ #io-channel-cells = <1>;
+ };
+};
+
+ADC channels and their indexes per variant:
+
+AXP209
+------
+ 0 | acin_v
+ 1 | acin_i
+ 2 | vbus_v
+ 3 | vbus_i
+ 4 | pmic_temp
+ 5 | gpio0_v
+ 6 | gpio1_v
+ 7 | ipsout_v
+ 8 | batt_v
+ 9 | batt_chrg_i
+10 | batt_dischrg_i
+
+AXP22x
+------
+ 0 | pmic_temp
+ 1 | batt_v
+ 2 | batt_chrg_i
+ 3 | batt_dischrg_i
+
+AXP813
+------
+ 0 | pmic_temp
+ 1 | gpio0_v
+ 2 | batt_v
+ 3 | batt_chrg_i
+ 4 | batt_dischrg_i
--- /dev/null
+* Analog Devices AD5272 digital potentiometer
+
+The node for this device must be a child node of a I2C controller, hence
+all mandatory properties for your controller must be specified. See directory:
+
+ Documentation/devicetree/bindings/i2c
+
+for more details.
+
+Required properties:
+ - compatible: Must be one of the following, depending on the model:
+ adi,ad5272-020
+ adi,ad5272-050
+ adi,ad5272-100
+ adi,ad5274-020
+ adi,ad5274-100
+
+Optional properties:
+ - reset-gpios: GPIO specification for the RESET input. This is an
+ active low signal to the AD5272.
+
+Example:
+ad5272: potentiometer@2f {
+ reg = <0x2F>;
+ compatible = "adi,ad5272-020";
+ reset-gpios = <&gpio3 6 GPIO_ACTIVE_HIGH>;
+};
--- /dev/null
+* Melexis MLX90632 contactless Infra Red temperature sensor
+
+Link to datasheet: https://www.melexis.com/en/documents/documentation/datasheets/datasheet-mlx90632
+
+There are various applications for the Infra Red contactless temperature sensor
+and MLX90632 is most suitable for consumer applications where measured object
+temperature is in range between -20 to 200 degrees Celsius with relative error
+of measurement below 1 degree Celsius in object temperature range for
+industrial applications. Since it can operate and measure ambient temperature
+in range of -20 to 85 degrees Celsius it is suitable also for outdoor use.
+
+Be aware that electronics surrounding the sensor can increase ambient
+temperature. MLX90632 can be calibrated to reduce the housing effect via
+already existing EEPROM parameters.
+
+Since measured object emissivity effects Infra Red energy emitted, emissivity
+should be set before requesting the object temperature.
+
+Required properties:
+ - compatible: should be "melexis,mlx90632"
+ - reg: the I2C address of the sensor (default 0x3a)
+
+Example:
+
+mlx90632@3a {
+ compatible = "melexis,mlx90632";
+ reg = <0x3a>;
+};
S: Supported
F: drivers/iio/temperature/mlx90614.c
+MELEXIS MLX90632 DRIVER
+M: Crt Mori <cmo@melexis.com>
+L: linux-iio@vger.kernel.org
+W: http://www.melexis.com
+S: Supported
+F: drivers/iio/temperature/mlx90632.c
+
MELFAS MIP4 TOUCHSCREEN DRIVER
M: Sangwon Jee <jeesw@melfas.com>
W: http://www.melfas.com
if ((ret < 0) || (ret >= ST_ACCEL_MAX))
return -ENODEV;
- strncpy(client->name, st_accel_id_table[ret].name,
+ strlcpy(client->name, st_accel_id_table[ret].name,
sizeof(client->name));
- client->name[sizeof(client->name) - 1] = '\0';
} else if (!id)
return -ENODEV;
config AT91_ADC
tristate "Atmel AT91 ADC"
depends on ARCH_AT91
- depends on INPUT
+ depends on INPUT && SYSFS
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
- select SYSFS
help
Say yes here to build support for Atmel AT91 ADC.
+// SPDX-License-Identifier: GPL-2.0
/*
- * AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
+ * Analog Devices AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
+ * TI ADC081S/ADC101S/ADC121S 8/10/12-bit SPI ADC driver
*
* Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
*/
#include <linux/device.h>
ID_AD7468,
ID_AD7495,
ID_AD7940,
+ ID_ADC081S,
+ ID_ADC101S,
+ ID_ADC121S,
};
static irqreturn_t ad7476_trigger_handler(int irq, void *p)
}, \
}
+#define ADC081S_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
+ BIT(IIO_CHAN_INFO_RAW))
#define AD7476_CHAN(bits) _AD7476_CHAN((bits), 13 - (bits), \
BIT(IIO_CHAN_INFO_RAW))
#define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
.channel[0] = AD7940_CHAN(14),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
+ [ID_ADC081S] = {
+ .channel[0] = ADC081S_CHAN(8),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
+ [ID_ADC101S] = {
+ .channel[0] = ADC081S_CHAN(10),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
+ [ID_ADC121S] = {
+ .channel[0] = ADC081S_CHAN(12),
+ .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+ },
};
static const struct iio_info ad7476_info = {
{"ad7910", ID_AD7467},
{"ad7920", ID_AD7466},
{"ad7940", ID_AD7940},
+ {"adc081s", ID_ADC081S},
+ {"adc101s", ID_ADC101S},
+ {"adc121s", ID_ADC121S},
{}
};
MODULE_DEVICE_TABLE(spi, ad7476_id);
#define AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(x) (((x) & BIT(0)) << 1)
#define AXP20X_ADC_RATE_MASK GENMASK(7, 6)
+#define AXP813_V_I_ADC_RATE_MASK GENMASK(5, 4)
+#define AXP813_ADC_RATE_MASK (AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK)
#define AXP20X_ADC_RATE_HZ(x) ((ilog2((x) / 25) << 6) & AXP20X_ADC_RATE_MASK)
#define AXP22X_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK)
+#define AXP813_TS_GPIO0_ADC_RATE_HZ(x) AXP20X_ADC_RATE_HZ(x)
+#define AXP813_V_I_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 4) & AXP813_V_I_ADC_RATE_MASK)
+#define AXP813_ADC_RATE_HZ(x) (AXP20X_ADC_RATE_HZ(x) | AXP813_V_I_ADC_RATE_HZ(x))
#define AXP20X_ADC_CHANNEL(_channel, _name, _type, _reg) \
{ \
AXP22X_BATT_DISCHRG_I,
};
+enum axp813_adc_channel_v {
+ AXP813_TS_IN = 0,
+ AXP813_GPIO0_V,
+ AXP813_BATT_V,
+};
+
static struct iio_map axp20x_maps[] = {
{
.consumer_dev_name = "axp20x-usb-power-supply",
AXP20X_BATT_DISCHRG_I_H),
};
+static const struct iio_chan_spec axp813_adc_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .address = AXP22X_PMIC_TEMP_H,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .datasheet_name = "pmic_temp",
+ },
+ AXP20X_ADC_CHANNEL(AXP813_GPIO0_V, "gpio0_v", IIO_VOLTAGE,
+ AXP288_GP_ADC_H),
+ AXP20X_ADC_CHANNEL(AXP813_BATT_V, "batt_v", IIO_VOLTAGE,
+ AXP20X_BATT_V_H),
+ AXP20X_ADC_CHANNEL(AXP22X_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT,
+ AXP20X_BATT_CHRG_I_H),
+ AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
+ AXP20X_BATT_DISCHRG_I_H),
+};
+
static int axp20x_adc_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val)
{
return IIO_VAL_INT;
}
+static int axp813_adc_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val)
+{
+ struct axp20x_adc_iio *info = iio_priv(indio_dev);
+
+ *val = axp20x_read_variable_width(info->regmap, chan->address, 12);
+ if (*val < 0)
+ return *val;
+
+ return IIO_VAL_INT;
+}
+
static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
{
switch (channel) {
}
}
+static int axp813_adc_scale_voltage(int channel, int *val, int *val2)
+{
+ switch (channel) {
+ case AXP813_GPIO0_V:
+ *val = 0;
+ *val2 = 800000;
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ case AXP813_BATT_V:
+ *val = 1;
+ *val2 = 100000;
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_adc_scale_current(int channel, int *val, int *val2)
{
switch (channel) {
}
}
+static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val,
+ int *val2)
+{
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ return axp813_adc_scale_voltage(chan->channel, val, val2);
+
+ case IIO_CURRENT:
+ *val = 1;
+ return IIO_VAL_INT;
+
+ case IIO_TEMP:
+ *val = 100;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
int *val)
{
}
}
+static int axp813_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val,
+ int *val2, long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_OFFSET:
+ *val = -2667;
+ return IIO_VAL_INT;
+
+ case IIO_CHAN_INFO_SCALE:
+ return axp813_adc_scale(chan, val, val2);
+
+ case IIO_CHAN_INFO_RAW:
+ return axp813_adc_raw(indio_dev, chan, val);
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int val, int val2,
long mask)
.read_raw = axp22x_read_raw,
};
-static int axp20x_adc_rate(int rate)
+static const struct iio_info axp813_adc_iio_info = {
+ .read_raw = axp813_read_raw,
+};
+
+static int axp20x_adc_rate(struct axp20x_adc_iio *info, int rate)
+{
+ return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,
+ AXP20X_ADC_RATE_MASK,
+ AXP20X_ADC_RATE_HZ(rate));
+}
+
+static int axp22x_adc_rate(struct axp20x_adc_iio *info, int rate)
{
- return AXP20X_ADC_RATE_HZ(rate);
+ return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,
+ AXP20X_ADC_RATE_MASK,
+ AXP22X_ADC_RATE_HZ(rate));
}
-static int axp22x_adc_rate(int rate)
+static int axp813_adc_rate(struct axp20x_adc_iio *info, int rate)
{
- return AXP22X_ADC_RATE_HZ(rate);
+ return regmap_update_bits(info->regmap, AXP813_ADC_RATE,
+ AXP813_ADC_RATE_MASK,
+ AXP813_ADC_RATE_HZ(rate));
}
struct axp_data {
int num_channels;
struct iio_chan_spec const *channels;
unsigned long adc_en1_mask;
- int (*adc_rate)(int rate);
+ int (*adc_rate)(struct axp20x_adc_iio *info,
+ int rate);
bool adc_en2;
struct iio_map *maps;
};
.maps = axp22x_maps,
};
+static const struct axp_data axp813_data = {
+ .iio_info = &axp813_adc_iio_info,
+ .num_channels = ARRAY_SIZE(axp813_adc_channels),
+ .channels = axp813_adc_channels,
+ .adc_en1_mask = AXP22X_ADC_EN1_MASK,
+ .adc_rate = axp813_adc_rate,
+ .adc_en2 = false,
+ .maps = axp22x_maps,
+};
+
+static const struct of_device_id axp20x_adc_of_match[] = {
+ { .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
+ { .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
+ { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, axp20x_adc_of_match);
+
static const struct platform_device_id axp20x_adc_id_match[] = {
{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
+ { .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(platform, axp20x_adc_id_match);
indio_dev->dev.of_node = pdev->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
- info->data = (struct axp_data *)platform_get_device_id(pdev)->driver_data;
+ if (!pdev->dev.of_node) {
+ const struct platform_device_id *id;
+
+ id = platform_get_device_id(pdev);
+ info->data = (struct axp_data *)id->driver_data;
+ } else {
+ struct device *dev = &pdev->dev;
+
+ info->data = (struct axp_data *)of_device_get_match_data(dev);
+ }
indio_dev->name = platform_get_device_id(pdev)->name;
indio_dev->info = info->data->iio_info;
AXP20X_ADC_EN2_MASK, AXP20X_ADC_EN2_MASK);
/* Configure ADCs rate */
- regmap_update_bits(info->regmap, AXP20X_ADC_RATE, AXP20X_ADC_RATE_MASK,
- info->data->adc_rate(100));
+ info->data->adc_rate(info, 100);
ret = iio_map_array_register(indio_dev, info->data->maps);
if (ret < 0) {
static struct platform_driver axp20x_adc_driver = {
.driver = {
.name = "axp20x-adc",
+ .of_match_table = of_match_ptr(axp20x_adc_of_match),
},
.id_table = axp20x_adc_id_match,
.probe = axp20x_probe,
priv = iio_priv(iiodev);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Cannot obtain memory resource\n");
- return -ENXIO;
- }
priv->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(priv->base)) {
dev_err(&pdev->dev, "Cannot map memory resource\n");
+// SPDX-License-Identifier: GPL-2.0+
/*
* ti-adc161s626.c - Texas Instruments ADC161S626 1-channel differential ADC
*
* adc141s626 - 14-bit ADC
* adc161s626 - 16-bit ADC
*
- * Copyright (C) 2016 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2016-2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
};
module_spi_driver(ti_adc_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("Texas Instruments ADC1x1S 1-channel differential ADC");
MODULE_LICENSE("GPL");
+// SPDX-License-Identifier: GPL-2.0+
/*
* ams-iaq-core.c - Support for AMS iAQ-Core VOC sensors
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
+ * Copyright (C) 2015, 2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
};
module_i2c_driver(ams_iaqcore_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("AMS iAQ-Core VOC sensors");
MODULE_LICENSE("GPL v2");
+// SPDX-License-Identifier: GPL-2.0+
/*
* atlas-ph-sensor.c - Support for Atlas Scientific OEM pH-SM sensor
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2015-2018 Matt Ranostay
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
};
module_i2c_driver(atlas_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("Atlas Scientific pH-SM sensor");
MODULE_LICENSE("GPL");
#define CCS811_ALG_RESULT_DATA 0x02
#define CCS811_RAW_DATA 0x03
#define CCS811_HW_ID 0x20
-#define CCS881_HW_ID_VALUE 0x81
+#define CCS811_HW_ID_VALUE 0x81
#define CCS811_HW_VERSION 0x21
#define CCS811_HW_VERSION_VALUE 0x10
#define CCS811_HW_VERSION_MASK 0xF0
if (ret < 0)
return ret;
- if (ret != CCS881_HW_ID_VALUE) {
+ if (ret != CCS811_HW_ID_VALUE) {
dev_err(&client->dev, "hardware id doesn't match CCS81x\n");
return -ENODEV;
}
+// SPDX-License-Identifier: GPL-2.0+
/*
* vz89x.c - Support for SGX Sensortech MiCS VZ89X VOC sensors
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
+ * Copyright (C) 2015-2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
};
module_i2c_driver(vz89x_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("SGX Sensortech MiCS VZ89X VOC sensors");
MODULE_LICENSE("GPL v2");
+// SPDX-License-Identifier: GPL-2.0+
/*
* max30100.c - Support for MAX30100 heart rate and pulse oximeter sensor
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2015, 2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*
* TODO: enable pulse length controls via device tree properties
*/
};
module_i2c_driver(max30100_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("MAX30100 heart rate and pulse oximeter sensor");
MODULE_LICENSE("GPL");
config HTS221_I2C
tristate
depends on HTS221
+ select REGMAP_I2C
config HTS221_SPI
tristate
depends on HTS221
+ select REGMAP_SPI
config HTU21
tristate "Measurement Specialties HTU21 humidity & temperature sensor"
}
dht11->timestamp = ktime_get_boot_ns();
- if (hum_int < 20) { /* DHT22 */
+ if (hum_int < 4) { /* DHT22: 100000 = (3*256+232)*100 */
dht11->temperature = (((temp_int & 0x7f) << 8) + temp_dec) *
((temp_int & 0x80) ? -100 : 100);
dht11->humidity = ((hum_int << 8) + hum_dec) * 100;
+// SPDX-License-Identifier: GPL-2.0+
/*
* hdc100x.c - Support for the TI HDC100x temperature + humidity sensors
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2015, 2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*
* Datasheets:
* http://www.ti.com/product/HDC1000/datasheet
};
module_i2c_driver(hdc100x_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("TI HDC100x humidity and temperature sensor driver");
MODULE_LICENSE("GPL");
#include <linux/iio/iio.h>
-#define HTS221_RX_MAX_LENGTH 8
-#define HTS221_TX_MAX_LENGTH 8
-
#define HTS221_DATA_SIZE 2
-struct hts221_transfer_buffer {
- u8 rx_buf[HTS221_RX_MAX_LENGTH];
- u8 tx_buf[HTS221_TX_MAX_LENGTH] ____cacheline_aligned;
-};
-
-struct hts221_transfer_function {
- int (*read)(struct device *dev, u8 addr, int len, u8 *data);
- int (*write)(struct device *dev, u8 addr, int len, u8 *data);
-};
-
enum hts221_sensor_type {
HTS221_SENSOR_H,
HTS221_SENSOR_T,
struct hts221_hw {
const char *name;
struct device *dev;
+ struct regmap *regmap;
- struct mutex lock;
struct iio_trigger *trig;
int irq;
bool enabled;
u8 odr;
-
- const struct hts221_transfer_function *tf;
- struct hts221_transfer_buffer tb;
};
extern const struct dev_pm_ops hts221_pm_ops;
-int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask, u8 val);
int hts221_probe(struct device *dev, int irq, const char *name,
- const struct hts221_transfer_function *tf_ops);
+ struct regmap *regmap);
int hts221_set_enable(struct hts221_hw *hw, bool enable);
int hts221_allocate_buffers(struct hts221_hw *hw);
int hts221_allocate_trigger(struct hts221_hw *hw);
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
+#include <linux/regmap.h>
+#include <linux/bitfield.h>
#include <linux/iio/iio.h>
#include <linux/iio/trigger.h>
{
struct iio_dev *iio_dev = iio_trigger_get_drvdata(trig);
struct hts221_hw *hw = iio_priv(iio_dev);
- int err;
-
- err = hts221_write_with_mask(hw, HTS221_REG_DRDY_EN_ADDR,
- HTS221_REG_DRDY_EN_MASK, state);
- return err < 0 ? err : 0;
+ return regmap_update_bits(hw->regmap, HTS221_REG_DRDY_EN_ADDR,
+ HTS221_REG_DRDY_EN_MASK,
+ FIELD_PREP(HTS221_REG_DRDY_EN_MASK, state));
}
static const struct iio_trigger_ops hts221_trigger_ops = {
static irqreturn_t hts221_trigger_handler_thread(int irq, void *private)
{
struct hts221_hw *hw = private;
- u8 status;
- int err;
+ int err, status;
- err = hw->tf->read(hw->dev, HTS221_REG_STATUS_ADDR, sizeof(status),
- &status);
+ err = regmap_read(hw->regmap, HTS221_REG_STATUS_ADDR, &status);
if (err < 0)
return IRQ_HANDLED;
- /*
+ /*
* H_DA bit (humidity data available) is routed to DRDY line.
* Humidity sample is computed after temperature one.
* Here we can assume data channels are both available if H_DA bit
break;
}
- err = hts221_write_with_mask(hw, HTS221_REG_DRDY_HL_ADDR,
- HTS221_REG_DRDY_HL_MASK, irq_active_low);
+ err = regmap_update_bits(hw->regmap, HTS221_REG_DRDY_HL_ADDR,
+ HTS221_REG_DRDY_HL_MASK,
+ FIELD_PREP(HTS221_REG_DRDY_HL_MASK,
+ irq_active_low));
if (err < 0)
return err;
open_drain = true;
}
- err = hts221_write_with_mask(hw, HTS221_REG_DRDY_PP_OD_ADDR,
- HTS221_REG_DRDY_PP_OD_MASK,
- open_drain);
+ err = regmap_update_bits(hw->regmap, HTS221_REG_DRDY_PP_OD_ADDR,
+ HTS221_REG_DRDY_PP_OD_MASK,
+ FIELD_PREP(HTS221_REG_DRDY_PP_OD_MASK,
+ open_drain));
if (err < 0)
return err;
/* humidity data */
ch = &iio_dev->channels[HTS221_SENSOR_H];
- err = hw->tf->read(hw->dev, ch->address, HTS221_DATA_SIZE,
- buffer);
+ err = regmap_bulk_read(hw->regmap, ch->address,
+ buffer, HTS221_DATA_SIZE);
if (err < 0)
goto out;
/* temperature data */
ch = &iio_dev->channels[HTS221_SENSOR_T];
- err = hw->tf->read(hw->dev, ch->address, HTS221_DATA_SIZE,
- buffer + HTS221_DATA_SIZE);
+ err = regmap_bulk_read(hw->regmap, ch->address,
+ buffer + HTS221_DATA_SIZE, HTS221_DATA_SIZE);
if (err < 0)
goto out;
#include <linux/iio/sysfs.h>
#include <linux/delay.h>
#include <linux/pm.h>
-#include <asm/unaligned.h>
+#include <linux/regmap.h>
+#include <linux/bitfield.h>
#include "hts221.h"
IIO_CHAN_SOFT_TIMESTAMP(2),
};
-int hts221_write_with_mask(struct hts221_hw *hw, u8 addr, u8 mask, u8 val)
-{
- u8 data;
- int err;
-
- mutex_lock(&hw->lock);
-
- err = hw->tf->read(hw->dev, addr, sizeof(data), &data);
- if (err < 0) {
- dev_err(hw->dev, "failed to read %02x register\n", addr);
- goto unlock;
- }
-
- data = (data & ~mask) | ((val << __ffs(mask)) & mask);
-
- err = hw->tf->write(hw->dev, addr, sizeof(data), &data);
- if (err < 0)
- dev_err(hw->dev, "failed to write %02x register\n", addr);
-
-unlock:
- mutex_unlock(&hw->lock);
-
- return err;
-}
-
static int hts221_check_whoami(struct hts221_hw *hw)
{
- u8 data;
- int err;
+ int err, data;
- err = hw->tf->read(hw->dev, HTS221_REG_WHOAMI_ADDR, sizeof(data),
- &data);
+ err = regmap_read(hw->regmap, HTS221_REG_WHOAMI_ADDR, &data);
if (err < 0) {
dev_err(hw->dev, "failed to read whoami register\n");
return err;
if (i == ARRAY_SIZE(hts221_odr_table))
return -EINVAL;
- err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_ODR_MASK, hts221_odr_table[i].val);
+ err = regmap_update_bits(hw->regmap, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ODR_MASK,
+ FIELD_PREP(HTS221_ODR_MASK,
+ hts221_odr_table[i].val));
if (err < 0)
return err;
enum hts221_sensor_type type,
u16 val)
{
- int i, err;
const struct hts221_avg *avg = &hts221_avg_list[type];
+ int i, err, data;
for (i = 0; i < HTS221_AVG_DEPTH; i++)
if (avg->avg_avl[i] == val)
if (i == HTS221_AVG_DEPTH)
return -EINVAL;
- err = hts221_write_with_mask(hw, avg->addr, avg->mask, i);
+ data = ((i << __ffs(avg->mask)) & avg->mask);
+ err = regmap_update_bits(hw->regmap, avg->addr,
+ avg->mask, data);
if (err < 0)
return err;
{
int err;
- err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_ENABLE_MASK, enable);
+ err = regmap_update_bits(hw->regmap, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ENABLE_MASK,
+ FIELD_PREP(HTS221_ENABLE_MASK, enable));
if (err < 0)
return err;
static int hts221_parse_temp_caldata(struct hts221_hw *hw)
{
- int err, *slope, *b_gen;
+ int err, *slope, *b_gen, cal0, cal1;
s16 cal_x0, cal_x1, cal_y0, cal_y1;
- u8 cal0, cal1;
+ __le16 val;
- err = hw->tf->read(hw->dev, HTS221_REG_0T_CAL_Y_H,
- sizeof(cal0), &cal0);
+ err = regmap_read(hw->regmap, HTS221_REG_0T_CAL_Y_H, &cal0);
if (err < 0)
return err;
- err = hw->tf->read(hw->dev, HTS221_REG_T1_T0_CAL_Y_H,
- sizeof(cal1), &cal1);
+ err = regmap_read(hw->regmap, HTS221_REG_T1_T0_CAL_Y_H, &cal1);
if (err < 0)
return err;
- cal_y0 = (le16_to_cpu(cal1 & 0x3) << 8) | cal0;
+ cal_y0 = ((cal1 & 0x3) << 8) | cal0;
- err = hw->tf->read(hw->dev, HTS221_REG_1T_CAL_Y_H,
- sizeof(cal0), &cal0);
+ err = regmap_read(hw->regmap, HTS221_REG_1T_CAL_Y_H, &cal0);
if (err < 0)
return err;
cal_y1 = (((cal1 & 0xc) >> 2) << 8) | cal0;
- err = hw->tf->read(hw->dev, HTS221_REG_0T_CAL_X_L, sizeof(cal_x0),
- (u8 *)&cal_x0);
+ err = regmap_bulk_read(hw->regmap, HTS221_REG_0T_CAL_X_L,
+ &val, sizeof(val));
if (err < 0)
return err;
- cal_x0 = le16_to_cpu(cal_x0);
+ cal_x0 = le16_to_cpu(val);
- err = hw->tf->read(hw->dev, HTS221_REG_1T_CAL_X_L, sizeof(cal_x1),
- (u8 *)&cal_x1);
+ err = regmap_bulk_read(hw->regmap, HTS221_REG_1T_CAL_X_L,
+ &val, sizeof(val));
if (err < 0)
return err;
- cal_x1 = le16_to_cpu(cal_x1);
+ cal_x1 = le16_to_cpu(val);
slope = &hw->sensors[HTS221_SENSOR_T].slope;
b_gen = &hw->sensors[HTS221_SENSOR_T].b_gen;
static int hts221_parse_rh_caldata(struct hts221_hw *hw)
{
- int err, *slope, *b_gen;
+ int err, *slope, *b_gen, data;
s16 cal_x0, cal_x1, cal_y0, cal_y1;
- u8 data;
+ __le16 val;
- err = hw->tf->read(hw->dev, HTS221_REG_0RH_CAL_Y_H, sizeof(data),
- &data);
+ err = regmap_read(hw->regmap, HTS221_REG_0RH_CAL_Y_H, &data);
if (err < 0)
return err;
cal_y0 = data;
- err = hw->tf->read(hw->dev, HTS221_REG_1RH_CAL_Y_H, sizeof(data),
- &data);
+ err = regmap_read(hw->regmap, HTS221_REG_1RH_CAL_Y_H, &data);
if (err < 0)
return err;
cal_y1 = data;
- err = hw->tf->read(hw->dev, HTS221_REG_0RH_CAL_X_H, sizeof(cal_x0),
- (u8 *)&cal_x0);
+ err = regmap_bulk_read(hw->regmap, HTS221_REG_0RH_CAL_X_H,
+ &val, sizeof(val));
if (err < 0)
return err;
- cal_x0 = le16_to_cpu(cal_x0);
+ cal_x0 = le16_to_cpu(val);
- err = hw->tf->read(hw->dev, HTS221_REG_1RH_CAL_X_H, sizeof(cal_x1),
- (u8 *)&cal_x1);
+ err = regmap_bulk_read(hw->regmap, HTS221_REG_1RH_CAL_X_H,
+ &val, sizeof(val));
if (err < 0)
return err;
- cal_x1 = le16_to_cpu(cal_x1);
+ cal_x1 = le16_to_cpu(val);
slope = &hw->sensors[HTS221_SENSOR_H].slope;
b_gen = &hw->sensors[HTS221_SENSOR_H].b_gen;
static int hts221_read_oneshot(struct hts221_hw *hw, u8 addr, int *val)
{
- u8 data[HTS221_DATA_SIZE];
+ __le16 data;
int err;
err = hts221_set_enable(hw, true);
msleep(50);
- err = hw->tf->read(hw->dev, addr, sizeof(data), data);
+ err = regmap_bulk_read(hw->regmap, addr, &data, sizeof(data));
if (err < 0)
return err;
hts221_set_enable(hw, false);
- *val = (s16)get_unaligned_le16(data);
+ *val = (s16)le16_to_cpu(data);
return IIO_VAL_INT;
}
static const unsigned long hts221_scan_masks[] = {0x3, 0x0};
int hts221_probe(struct device *dev, int irq, const char *name,
- const struct hts221_transfer_function *tf_ops)
+ struct regmap *regmap)
{
struct iio_dev *iio_dev;
struct hts221_hw *hw;
hw->name = name;
hw->dev = dev;
hw->irq = irq;
- hw->tf = tf_ops;
-
- mutex_init(&hw->lock);
+ hw->regmap = regmap;
err = hts221_check_whoami(hw);
if (err < 0)
iio_dev->info = &hts221_info;
/* enable Block Data Update */
- err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_BDU_MASK, 1);
+ err = regmap_update_bits(hw->regmap, HTS221_REG_CNTRL1_ADDR,
+ HTS221_BDU_MASK,
+ FIELD_PREP(HTS221_BDU_MASK, 1));
if (err < 0)
return err;
{
struct iio_dev *iio_dev = dev_get_drvdata(dev);
struct hts221_hw *hw = iio_priv(iio_dev);
- int err;
- err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_ENABLE_MASK, false);
-
- return err < 0 ? err : 0;
+ return regmap_update_bits(hw->regmap, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ENABLE_MASK,
+ FIELD_PREP(HTS221_ENABLE_MASK, false));
}
static int __maybe_unused hts221_resume(struct device *dev)
int err = 0;
if (hw->enabled)
- err = hts221_write_with_mask(hw, HTS221_REG_CNTRL1_ADDR,
- HTS221_ENABLE_MASK, true);
-
+ err = regmap_update_bits(hw->regmap, HTS221_REG_CNTRL1_ADDR,
+ HTS221_ENABLE_MASK,
+ FIELD_PREP(HTS221_ENABLE_MASK,
+ true));
return err;
}
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/slab.h>
-#include "hts221.h"
-
-#define I2C_AUTO_INCREMENT 0x80
-
-static int hts221_i2c_read(struct device *dev, u8 addr, int len, u8 *data)
-{
- struct i2c_msg msg[2];
- struct i2c_client *client = to_i2c_client(dev);
-
- if (len > 1)
- addr |= I2C_AUTO_INCREMENT;
-
- msg[0].addr = client->addr;
- msg[0].flags = client->flags;
- msg[0].len = 1;
- msg[0].buf = &addr;
-
- msg[1].addr = client->addr;
- msg[1].flags = client->flags | I2C_M_RD;
- msg[1].len = len;
- msg[1].buf = data;
-
- return i2c_transfer(client->adapter, msg, 2);
-}
+#include <linux/regmap.h>
-static int hts221_i2c_write(struct device *dev, u8 addr, int len, u8 *data)
-{
- u8 send[len + 1];
- struct i2c_msg msg;
- struct i2c_client *client = to_i2c_client(dev);
-
- if (len > 1)
- addr |= I2C_AUTO_INCREMENT;
-
- send[0] = addr;
- memcpy(&send[1], data, len * sizeof(u8));
-
- msg.addr = client->addr;
- msg.flags = client->flags;
- msg.len = len + 1;
- msg.buf = send;
+#include "hts221.h"
- return i2c_transfer(client->adapter, &msg, 1);
-}
+#define HTS221_I2C_AUTO_INCREMENT BIT(7)
-static const struct hts221_transfer_function hts221_transfer_fn = {
- .read = hts221_i2c_read,
- .write = hts221_i2c_write,
+static const struct regmap_config hts221_i2c_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
+ .read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
};
static int hts221_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "Failed to register i2c regmap %d\n",
+ (int)PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
return hts221_probe(&client->dev, client->irq,
- client->name, &hts221_transfer_fn);
+ client->name, regmap);
}
static const struct acpi_device_id hts221_acpi_match[] = {
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
-#include "hts221.h"
-
-#define SENSORS_SPI_READ 0x80
-#define SPI_AUTO_INCREMENT 0x40
-
-static int hts221_spi_read(struct device *dev, u8 addr, int len, u8 *data)
-{
- int err;
- struct spi_device *spi = to_spi_device(dev);
- struct iio_dev *iio_dev = spi_get_drvdata(spi);
- struct hts221_hw *hw = iio_priv(iio_dev);
-
- struct spi_transfer xfers[] = {
- {
- .tx_buf = hw->tb.tx_buf,
- .bits_per_word = 8,
- .len = 1,
- },
- {
- .rx_buf = hw->tb.rx_buf,
- .bits_per_word = 8,
- .len = len,
- }
- };
-
- if (len > 1)
- addr |= SPI_AUTO_INCREMENT;
- hw->tb.tx_buf[0] = addr | SENSORS_SPI_READ;
-
- err = spi_sync_transfer(spi, xfers, ARRAY_SIZE(xfers));
- if (err < 0)
- return err;
-
- memcpy(data, hw->tb.rx_buf, len * sizeof(u8));
-
- return len;
-}
-
-static int hts221_spi_write(struct device *dev, u8 addr, int len, u8 *data)
-{
- struct spi_device *spi = to_spi_device(dev);
- struct iio_dev *iio_dev = spi_get_drvdata(spi);
- struct hts221_hw *hw = iio_priv(iio_dev);
-
- struct spi_transfer xfers = {
- .tx_buf = hw->tb.tx_buf,
- .bits_per_word = 8,
- .len = len + 1,
- };
-
- if (len >= HTS221_TX_MAX_LENGTH)
- return -ENOMEM;
+#include <linux/regmap.h>
- if (len > 1)
- addr |= SPI_AUTO_INCREMENT;
- hw->tb.tx_buf[0] = addr;
- memcpy(&hw->tb.tx_buf[1], data, len);
+#include "hts221.h"
- return spi_sync_transfer(spi, &xfers, 1);
-}
+#define HTS221_SPI_READ BIT(7)
+#define HTS221_SPI_AUTO_INCREMENT BIT(6)
-static const struct hts221_transfer_function hts221_transfer_fn = {
- .read = hts221_spi_read,
- .write = hts221_spi_write,
+static const struct regmap_config hts221_spi_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .write_flag_mask = HTS221_SPI_AUTO_INCREMENT,
+ .read_flag_mask = HTS221_SPI_READ | HTS221_SPI_AUTO_INCREMENT,
};
static int hts221_spi_probe(struct spi_device *spi)
{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spi(spi, &hts221_spi_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(&spi->dev, "Failed to register spi regmap %d\n",
+ (int)PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
return hts221_probe(&spi->dev, spi->irq,
- spi->modalias, &hts221_transfer_fn);
+ spi->modalias, regmap);
}
static const struct of_device_id hts221_spi_of_match[] = {
ST_LSM6DSX_MAX_ID,
};
-#define ST_LSM6DSX_BUFF_SIZE 256
+#define ST_LSM6DSX_BUFF_SIZE 400
#define ST_LSM6DSX_CHAN_SIZE 2
#define ST_LSM6DSX_SAMPLE_SIZE 6
#define ST_LSM6DSX_MAX_WORD_LEN ((32 / ST_LSM6DSX_SAMPLE_SIZE) * \
u8 th_wl;
};
+/**
+ * struct st_lsm6dsx_hw_ts_settings - ST IMU hw timer settings
+ * @timer_en: Hw timer enable register info (addr + mask).
+ * @hr_timer: Hw timer resolution register info (addr + mask).
+ * @fifo_en: Hw timer FIFO enable register info (addr + mask).
+ * @decimator: Hw timer FIFO decimator register info (addr + mask).
+ */
+struct st_lsm6dsx_hw_ts_settings {
+ struct st_lsm6dsx_reg timer_en;
+ struct st_lsm6dsx_reg hr_timer;
+ struct st_lsm6dsx_reg fifo_en;
+ struct st_lsm6dsx_reg decimator;
+};
+
/**
* struct st_lsm6dsx_settings - ST IMU sensor settings
* @wai: Sensor WhoAmI default value.
* @id: List of hw id supported by the driver configuration.
* @decimator: List of decimator register info (addr + mask).
* @fifo_ops: Sensor hw FIFO parameters.
+ * @ts_settings: Hw timer related settings.
*/
struct st_lsm6dsx_settings {
u8 wai;
enum st_lsm6dsx_hw_id id[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_reg decimator[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_fifo_ops fifo_ops;
+ struct st_lsm6dsx_hw_ts_settings ts_settings;
};
enum st_lsm6dsx_sensor_id {
* @watermark: Sensor watermark level.
* @sip: Number of samples in a given pattern.
* @decimator: FIFO decimation factor.
- * @delta_ts: Delta time between two consecutive interrupts.
- * @ts: Latest timestamp from the interrupt handler.
+ * @ts_ref: Sensor timestamp reference for hw one.
*/
struct st_lsm6dsx_sensor {
char name[32];
u16 watermark;
u8 sip;
u8 decimator;
-
- s64 delta_ts;
- s64 ts;
+ s64 ts_ref;
};
/**
* @conf_lock: Mutex to prevent concurrent FIFO configuration update.
* @fifo_mode: FIFO operating mode supported by the device.
* @enable_mask: Enabled sensor bitmask.
- * @sip: Total number of samples (acc/gyro) in a given pattern.
+ * @ts_sip: Total number of timestamp samples in a given pattern.
+ * @sip: Total number of samples (acc/gyro/ts) in a given pattern.
* @buff: Device read buffer.
* @iio_devs: Pointers to acc/gyro iio_dev instances.
* @settings: Pointer to the specific sensor settings in use.
enum st_lsm6dsx_fifo_mode fifo_mode;
u8 enable_mask;
+ u8 ts_sip;
u8 sip;
u8 *buff;
#define ST_LSM6DSX_FIFO_ODR_MASK GENMASK(6, 3)
#define ST_LSM6DSX_FIFO_EMPTY_MASK BIT(12)
#define ST_LSM6DSX_REG_FIFO_OUTL_ADDR 0x3e
+#define ST_LSM6DSX_REG_TS_RESET_ADDR 0x42
#define ST_LSM6DSX_MAX_FIFO_ODR_VAL 0x08
+#define ST_LSM6DSX_TS_SENSITIVITY 25000UL /* 25us */
+#define ST_LSM6DSX_TS_RESET_VAL 0xaa
+
struct st_lsm6dsx_decimator_entry {
u8 decimator;
u8 val;
static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw)
{
+ u16 max_odr, min_odr, sip = 0, ts_sip = 0;
+ const struct st_lsm6dsx_reg *ts_dec_reg;
struct st_lsm6dsx_sensor *sensor;
- u16 max_odr, min_odr, sip = 0;
- int err, i;
+ int err = 0, i;
u8 data;
st_lsm6dsx_get_max_min_odr(hw, &max_odr, &min_odr);
sensor->decimator = 0;
data = 0;
}
+ ts_sip = max_t(u16, ts_sip, sensor->sip);
dec_reg = &hw->settings->decimator[sensor->id];
if (dec_reg->addr) {
}
sip += sensor->sip;
}
- hw->sip = sip;
+ hw->sip = sip + ts_sip;
+ hw->ts_sip = ts_sip;
- return 0;
+ /*
+ * update hw ts decimator if necessary. Decimator for hw timestamp
+ * is always 1 or 0 in order to have a ts sample for each data
+ * sample in FIFO
+ */
+ ts_dec_reg = &hw->settings->ts_settings.decimator;
+ if (ts_dec_reg->addr) {
+ int val, ts_dec = !!hw->ts_sip;
+
+ val = ST_LSM6DSX_SHIFT_VAL(ts_dec, ts_dec_reg->mask);
+ err = regmap_update_bits(hw->regmap, ts_dec_reg->addr,
+ ts_dec_reg->mask, val);
+ }
+ return err;
}
int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
&wdata, sizeof(wdata));
}
+static int st_lsm6dsx_reset_hw_ts(struct st_lsm6dsx_hw *hw)
+{
+ struct st_lsm6dsx_sensor *sensor;
+ int i, err;
+
+ /* reset hw ts counter */
+ err = regmap_write(hw->regmap, ST_LSM6DSX_REG_TS_RESET_ADDR,
+ ST_LSM6DSX_TS_RESET_VAL);
+ if (err < 0)
+ return err;
+
+ for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) {
+ sensor = iio_priv(hw->iio_devs[i]);
+ /*
+ * store enable buffer timestamp as reference for
+ * hw timestamp
+ */
+ sensor->ts_ref = iio_get_time_ns(hw->iio_devs[i]);
+ }
+ return 0;
+}
+
/*
* Set max bulk read to ST_LSM6DSX_MAX_WORD_LEN in order to avoid
* a kmalloc for each bus access
return 0;
}
+#define ST_LSM6DSX_IIO_BUFF_SIZE (ALIGN(ST_LSM6DSX_SAMPLE_SIZE, \
+ sizeof(s64)) + sizeof(s64))
/**
* st_lsm6dsx_read_fifo() - LSM6DS3-LSM6DS3H-LSM6DSL-LSM6DSM read FIFO routine
* @hw: Pointer to instance of struct st_lsm6dsx_hw.
{
u16 fifo_len, pattern_len = hw->sip * ST_LSM6DSX_SAMPLE_SIZE;
u16 fifo_diff_mask = hw->settings->fifo_ops.fifo_diff.mask;
- int err, acc_sip, gyro_sip, read_len, samples, offset;
+ int err, acc_sip, gyro_sip, ts_sip, read_len, offset;
struct st_lsm6dsx_sensor *acc_sensor, *gyro_sensor;
- s64 acc_ts, acc_delta_ts, gyro_ts, gyro_delta_ts;
- u8 iio_buff[ALIGN(ST_LSM6DSX_SAMPLE_SIZE, sizeof(s64)) + sizeof(s64)];
+ u8 gyro_buff[ST_LSM6DSX_IIO_BUFF_SIZE];
+ u8 acc_buff[ST_LSM6DSX_IIO_BUFF_SIZE];
+ bool reset_ts = false;
__le16 fifo_status;
+ s64 ts = 0;
err = regmap_bulk_read(hw->regmap,
hw->settings->fifo_ops.fifo_diff.addr,
fifo_len = (le16_to_cpu(fifo_status) & fifo_diff_mask) *
ST_LSM6DSX_CHAN_SIZE;
- samples = fifo_len / ST_LSM6DSX_SAMPLE_SIZE;
fifo_len = (fifo_len / pattern_len) * pattern_len;
- /*
- * compute delta timestamp between two consecutive samples
- * in order to estimate queueing time of data generated
- * by the sensor
- */
acc_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
- acc_ts = acc_sensor->ts - acc_sensor->delta_ts;
- acc_delta_ts = div_s64(acc_sensor->delta_ts * acc_sensor->decimator,
- samples);
-
gyro_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_GYRO]);
- gyro_ts = gyro_sensor->ts - gyro_sensor->delta_ts;
- gyro_delta_ts = div_s64(gyro_sensor->delta_ts * gyro_sensor->decimator,
- samples);
for (read_len = 0; read_len < fifo_len; read_len += pattern_len) {
err = st_lsm6dsx_read_block(hw, hw->buff, pattern_len);
* Data are written to the FIFO with a specific pattern
* depending on the configured ODRs. The first sequence of data
* stored in FIFO contains the data of all enabled sensors
- * (e.g. Gx, Gy, Gz, Ax, Ay, Az), then data are repeated
+ * (e.g. Gx, Gy, Gz, Ax, Ay, Az, Ts), then data are repeated
* depending on the value of the decimation factor set for each
* sensor.
*
* - gyroscope ODR = 208Hz, accelerometer ODR = 104Hz
* Since the gyroscope ODR is twice the accelerometer one, the
* following pattern is repeated every 9 samples:
- * - Gx, Gy, Gz, Ax, Ay, Az, Gx, Gy, Gz
+ * - Gx, Gy, Gz, Ax, Ay, Az, Ts, Gx, Gy, Gz, Ts, Gx, ..
*/
gyro_sip = gyro_sensor->sip;
acc_sip = acc_sensor->sip;
+ ts_sip = hw->ts_sip;
offset = 0;
while (acc_sip > 0 || gyro_sip > 0) {
- if (gyro_sip-- > 0) {
- memcpy(iio_buff, &hw->buff[offset],
+ if (gyro_sip > 0) {
+ memcpy(gyro_buff, &hw->buff[offset],
ST_LSM6DSX_SAMPLE_SIZE);
- iio_push_to_buffers_with_timestamp(
- hw->iio_devs[ST_LSM6DSX_ID_GYRO],
- iio_buff, gyro_ts);
offset += ST_LSM6DSX_SAMPLE_SIZE;
- gyro_ts += gyro_delta_ts;
}
-
- if (acc_sip-- > 0) {
- memcpy(iio_buff, &hw->buff[offset],
+ if (acc_sip > 0) {
+ memcpy(acc_buff, &hw->buff[offset],
ST_LSM6DSX_SAMPLE_SIZE);
- iio_push_to_buffers_with_timestamp(
- hw->iio_devs[ST_LSM6DSX_ID_ACC],
- iio_buff, acc_ts);
offset += ST_LSM6DSX_SAMPLE_SIZE;
- acc_ts += acc_delta_ts;
}
+
+ if (ts_sip-- > 0) {
+ u8 data[ST_LSM6DSX_SAMPLE_SIZE];
+
+ memcpy(data, &hw->buff[offset], sizeof(data));
+ /*
+ * hw timestamp is 3B long and it is stored
+ * in FIFO using 6B as 4th FIFO data set
+ * according to this schema:
+ * B0 = ts[15:8], B1 = ts[23:16], B3 = ts[7:0]
+ */
+ ts = data[1] << 16 | data[0] << 8 | data[3];
+ /*
+ * check if hw timestamp engine is going to
+ * reset (the sensor generates an interrupt
+ * to signal the hw timestamp will reset in
+ * 1.638s)
+ */
+ if (!reset_ts && ts >= 0xff0000)
+ reset_ts = true;
+ ts *= ST_LSM6DSX_TS_SENSITIVITY;
+
+ offset += ST_LSM6DSX_SAMPLE_SIZE;
+ }
+
+ if (gyro_sip-- > 0)
+ iio_push_to_buffers_with_timestamp(
+ hw->iio_devs[ST_LSM6DSX_ID_GYRO],
+ gyro_buff, gyro_sensor->ts_ref + ts);
+ if (acc_sip-- > 0)
+ iio_push_to_buffers_with_timestamp(
+ hw->iio_devs[ST_LSM6DSX_ID_ACC],
+ acc_buff, acc_sensor->ts_ref + ts);
}
}
+ if (unlikely(reset_ts)) {
+ err = st_lsm6dsx_reset_hw_ts(hw);
+ if (err < 0)
+ return err;
+ }
return read_len;
}
goto out;
if (hw->enable_mask) {
- err = st_lsm6dsx_set_fifo_mode(hw, ST_LSM6DSX_FIFO_CONT);
+ /* reset hw ts counter */
+ err = st_lsm6dsx_reset_hw_ts(hw);
if (err < 0)
goto out;
- /*
- * store enable buffer timestamp as reference to compute
- * first delta timestamp
- */
- sensor->ts = iio_get_time_ns(iio_dev);
+ err = st_lsm6dsx_set_fifo_mode(hw, ST_LSM6DSX_FIFO_CONT);
}
out:
static irqreturn_t st_lsm6dsx_handler_irq(int irq, void *private)
{
struct st_lsm6dsx_hw *hw = private;
- struct st_lsm6dsx_sensor *sensor;
- int i;
-
- if (!hw->sip)
- return IRQ_NONE;
-
- for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) {
- sensor = iio_priv(hw->iio_devs[i]);
-
- if (sensor->sip > 0) {
- s64 timestamp;
-
- timestamp = iio_get_time_ns(hw->iio_devs[i]);
- sensor->delta_ts = timestamp - sensor->ts;
- sensor->ts = timestamp;
- }
- }
- return IRQ_WAKE_THREAD;
+ return hw->sip > 0 ? IRQ_WAKE_THREAD : IRQ_NONE;
}
static irqreturn_t st_lsm6dsx_handler_thread(int irq, void *private)
},
.th_wl = 3, /* 1LSB = 2B */
},
+ .ts_settings = {
+ .timer_en = {
+ .addr = 0x58,
+ .mask = BIT(7),
+ },
+ .hr_timer = {
+ .addr = 0x5c,
+ .mask = BIT(4),
+ },
+ .fifo_en = {
+ .addr = 0x07,
+ .mask = BIT(7),
+ },
+ .decimator = {
+ .addr = 0x09,
+ .mask = GENMASK(5, 3),
+ },
+ },
},
{
.wai = 0x69,
},
.th_wl = 3, /* 1LSB = 2B */
},
+ .ts_settings = {
+ .timer_en = {
+ .addr = 0x58,
+ .mask = BIT(7),
+ },
+ .hr_timer = {
+ .addr = 0x5c,
+ .mask = BIT(4),
+ },
+ .fifo_en = {
+ .addr = 0x07,
+ .mask = BIT(7),
+ },
+ .decimator = {
+ .addr = 0x09,
+ .mask = GENMASK(5, 3),
+ },
+ },
},
{
.wai = 0x6a,
},
.th_wl = 3, /* 1LSB = 2B */
},
+ .ts_settings = {
+ .timer_en = {
+ .addr = 0x19,
+ .mask = BIT(5),
+ },
+ .hr_timer = {
+ .addr = 0x5c,
+ .mask = BIT(4),
+ },
+ .fifo_en = {
+ .addr = 0x07,
+ .mask = BIT(7),
+ },
+ .decimator = {
+ .addr = 0x09,
+ .mask = GENMASK(5, 3),
+ },
+ },
},
};
return err;
}
+static int st_lsm6dsx_init_hw_timer(struct st_lsm6dsx_hw *hw)
+{
+ const struct st_lsm6dsx_hw_ts_settings *ts_settings;
+ int err, val;
+
+ ts_settings = &hw->settings->ts_settings;
+ /* enable hw timestamp generation if necessary */
+ if (ts_settings->timer_en.addr) {
+ val = ST_LSM6DSX_SHIFT_VAL(1, ts_settings->timer_en.mask);
+ err = regmap_update_bits(hw->regmap,
+ ts_settings->timer_en.addr,
+ ts_settings->timer_en.mask, val);
+ if (err < 0)
+ return err;
+ }
+
+ /* enable high resolution for hw ts timer if necessary */
+ if (ts_settings->hr_timer.addr) {
+ val = ST_LSM6DSX_SHIFT_VAL(1, ts_settings->hr_timer.mask);
+ err = regmap_update_bits(hw->regmap,
+ ts_settings->hr_timer.addr,
+ ts_settings->hr_timer.mask, val);
+ if (err < 0)
+ return err;
+ }
+
+ /* enable ts queueing in FIFO if necessary */
+ if (ts_settings->fifo_en.addr) {
+ val = ST_LSM6DSX_SHIFT_VAL(1, ts_settings->fifo_en.mask);
+ err = regmap_update_bits(hw->regmap,
+ ts_settings->fifo_en.addr,
+ ts_settings->fifo_en.mask, val);
+ if (err < 0)
+ return err;
+ }
+ return 0;
+}
+
static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
{
u8 drdy_int_reg;
if (err < 0)
return err;
- return regmap_update_bits(hw->regmap, drdy_int_reg,
- ST_LSM6DSX_REG_FIFO_FTH_IRQ_MASK,
- FIELD_PREP(ST_LSM6DSX_REG_FIFO_FTH_IRQ_MASK,
- 1));
+ err = regmap_update_bits(hw->regmap, drdy_int_reg,
+ ST_LSM6DSX_REG_FIFO_FTH_IRQ_MASK,
+ FIELD_PREP(ST_LSM6DSX_REG_FIFO_FTH_IRQ_MASK,
+ 1));
+ if (err < 0)
+ return err;
+
+ return st_lsm6dsx_init_hw_timer(hw);
}
static struct iio_dev *st_lsm6dsx_alloc_iiodev(struct st_lsm6dsx_hw *hw,
+// SPDX-License-Identifier: GPL-2.0+
/*
* apds9960.c - Support for Avago APDS9960 gesture/RGB/ALS/proximity sensor
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2015, 2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*
* TODO: gesture + proximity calib offsets
*/
};
module_i2c_driver(apds9960_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("ADPS9960 Gesture/RGB/ALS/Proximity sensor");
MODULE_LICENSE("GPL");
menu "Digital potentiometers"
+config AD5272
+ tristate "Analog Devices AD5272 and similar Digital Potentiometer driver"
+ depends on I2C
+ help
+ Say yes here to build support for the Analog Devices AD5272 and AD5274
+ digital potentiometer chip.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad5272.
+
config DS1803
tristate "Maxim Integrated DS1803 Digital Potentiometer driver"
depends on I2C
#
# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_AD5272) += ad5272.o
obj-$(CONFIG_DS1803) += ds1803.o
obj-$(CONFIG_MAX5481) += max5481.o
obj-$(CONFIG_MAX5487) += max5487.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Analog Devices AD5272 digital potentiometer driver
+ * Copyright (C) 2018 Phil Reid <preid@electromag.com.au>
+ *
+ * Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5272_5274.pdf
+ *
+ * DEVID #Wipers #Positions Resistor Opts (kOhm) i2c address
+ * ad5272 1 1024 20, 50, 100 01011xx
+ * ad5274 1 256 20, 100 01011xx
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+
+#define AD5272_RDAC_WR 1
+#define AD5272_RDAC_RD 2
+#define AD5272_RESET 4
+#define AD5272_CTL 7
+
+#define AD5272_RDAC_WR_EN BIT(1)
+
+struct ad5272_cfg {
+ int max_pos;
+ int kohms;
+ int shift;
+};
+
+enum ad5272_type {
+ AD5272_020,
+ AD5272_050,
+ AD5272_100,
+ AD5274_020,
+ AD5274_100,
+};
+
+static const struct ad5272_cfg ad5272_cfg[] = {
+ [AD5272_020] = { .max_pos = 1024, .kohms = 20 },
+ [AD5272_050] = { .max_pos = 1024, .kohms = 50 },
+ [AD5272_100] = { .max_pos = 1024, .kohms = 100 },
+ [AD5274_020] = { .max_pos = 256, .kohms = 20, .shift = 2 },
+ [AD5274_100] = { .max_pos = 256, .kohms = 100, .shift = 2 },
+};
+
+struct ad5272_data {
+ struct i2c_client *client;
+ struct mutex lock;
+ const struct ad5272_cfg *cfg;
+ u8 buf[2] ____cacheline_aligned;
+};
+
+static const struct iio_chan_spec ad5272_channel = {
+ .type = IIO_RESISTANCE,
+ .output = 1,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+};
+
+static int ad5272_write(struct ad5272_data *data, int reg, int val)
+{
+ int ret;
+
+ data->buf[0] = (reg << 2) | ((val >> 8) & 0x3);
+ data->buf[1] = (u8)val;
+
+ mutex_lock(&data->lock);
+ ret = i2c_master_send(data->client, data->buf, sizeof(data->buf));
+ mutex_unlock(&data->lock);
+ return ret < 0 ? ret : 0;
+}
+
+static int ad5272_read(struct ad5272_data *data, int reg, int *val)
+{
+ int ret;
+
+ data->buf[0] = reg << 2;
+ data->buf[1] = 0;
+
+ mutex_lock(&data->lock);
+ ret = i2c_master_send(data->client, data->buf, sizeof(data->buf));
+ if (ret < 0)
+ goto error;
+
+ ret = i2c_master_recv(data->client, data->buf, sizeof(data->buf));
+ if (ret < 0)
+ goto error;
+
+ *val = ((data->buf[0] & 0x3) << 8) | data->buf[1];
+ ret = 0;
+error:
+ mutex_unlock(&data->lock);
+ return ret;
+}
+
+static int ad5272_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct ad5272_data *data = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW: {
+ ret = ad5272_read(data, AD5272_RDAC_RD, val);
+ *val = *val >> data->cfg->shift;
+ return ret ? ret : IIO_VAL_INT;
+ }
+ case IIO_CHAN_INFO_SCALE:
+ *val = 1000 * data->cfg->kohms;
+ *val2 = data->cfg->max_pos;
+ return IIO_VAL_FRACTIONAL;
+ }
+
+ return -EINVAL;
+}
+
+static int ad5272_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask)
+{
+ struct ad5272_data *data = iio_priv(indio_dev);
+
+ if (mask != IIO_CHAN_INFO_RAW)
+ return -EINVAL;
+
+ if (val >= data->cfg->max_pos || val < 0 || val2)
+ return -EINVAL;
+
+ return ad5272_write(data, AD5272_RDAC_WR, val << data->cfg->shift);
+}
+
+static const struct iio_info ad5272_info = {
+ .read_raw = ad5272_read_raw,
+ .write_raw = ad5272_write_raw,
+};
+
+static int ad5272_reset(struct ad5272_data *data)
+{
+ struct gpio_desc *reset_gpio;
+
+ reset_gpio = devm_gpiod_get_optional(&data->client->dev, "reset",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(reset_gpio))
+ return PTR_ERR(reset_gpio);
+
+ if (reset_gpio) {
+ udelay(1);
+ gpiod_set_value(reset_gpio, 1);
+ } else {
+ ad5272_write(data, AD5272_RESET, 0);
+ }
+ usleep_range(1000, 2000);
+
+ return 0;
+}
+
+static int ad5272_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct iio_dev *indio_dev;
+ struct ad5272_data *data;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, indio_dev);
+
+ data = iio_priv(indio_dev);
+ data->client = client;
+ mutex_init(&data->lock);
+ data->cfg = &ad5272_cfg[id->driver_data];
+
+ ret = ad5272_reset(data);
+ if (ret)
+ return ret;
+
+ ret = ad5272_write(data, AD5272_CTL, AD5272_RDAC_WR_EN);
+ if (ret < 0)
+ return -ENODEV;
+
+ indio_dev->dev.parent = dev;
+ indio_dev->info = &ad5272_info;
+ indio_dev->channels = &ad5272_channel;
+ indio_dev->num_channels = 1;
+ indio_dev->name = client->name;
+
+ return devm_iio_device_register(dev, indio_dev);
+}
+
+#if defined(CONFIG_OF)
+static const struct of_device_id ad5272_dt_ids[] = {
+ { .compatible = "adi,ad5272-020", .data = (void *)AD5272_020 },
+ { .compatible = "adi,ad5272-050", .data = (void *)AD5272_050 },
+ { .compatible = "adi,ad5272-100", .data = (void *)AD5272_100 },
+ { .compatible = "adi,ad5274-020", .data = (void *)AD5274_020 },
+ { .compatible = "adi,ad5274-100", .data = (void *)AD5274_100 },
+ {}
+};
+MODULE_DEVICE_TABLE(of, ad5272_dt_ids);
+#endif /* CONFIG_OF */
+
+static const struct i2c_device_id ad5272_id[] = {
+ { "ad5272-020", AD5272_020 },
+ { "ad5272-050", AD5272_050 },
+ { "ad5272-100", AD5272_100 },
+ { "ad5274-020", AD5274_020 },
+ { "ad5274-100", AD5274_100 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ad5272_id);
+
+static struct i2c_driver ad5272_driver = {
+ .driver = {
+ .name = "ad5272",
+ .of_match_table = of_match_ptr(ad5272_dt_ids),
+ },
+ .probe = ad5272_probe,
+ .id_table = ad5272_id,
+};
+
+module_i2c_driver(ad5272_driver);
+
+MODULE_AUTHOR("Phil Reid <preid@eletromag.com.au>");
+MODULE_DESCRIPTION("AD5272 digital potentiometer");
+MODULE_LICENSE("GPL v2");
+// SPDX-License-Identifier: GPL-2.0+
/*
* tpl0102.c - Support for Texas Instruments digital potentiometers
*
- * Copyright (C) 2016 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2016, 2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*
* TODO: enable/disable hi-z output control
*/
module_i2c_driver(tpl0102_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("TPL0102 digital potentiometer");
MODULE_LICENSE("GPL");
+// SPDX-License-Identifier: GPL-2.0+
/*
* lmp91000.c - Support for Texas Instruments digital potentiostats
*
- * Copyright (C) 2016 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2016, 2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*
* TODO: bias voltage + polarity control, and multiple chip support
*/
};
module_i2c_driver(lmp91000_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("LMP91000 digital potentiostat");
MODULE_LICENSE("GPL");
};
int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
- const char* name, int type);
+ const char *name, int type);
int ms5611_remove(struct iio_dev *indio_dev);
#endif /* _MS5611_H */
+// SPDX-License-Identifier: GPL-2.0+
/*
* as3935.c - Support for AS3935 Franklin lightning sensor
*
- * Copyright (C) 2014 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
+ * Copyright (C) 2014, 2017-2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
};
module_spi_driver(as3935_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("AS3935 lightning sensor");
MODULE_LICENSE("GPL");
+// SPDX-License-Identifier: GPL-2.0+
/*
* pulsedlight-lidar-lite-v2.c - Support for PulsedLight LIDAR sensor
*
- * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2015, 2017-2018
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
*
* TODO: interrupt mode, and signal strength reporting
*/
};
module_i2c_driver(lidar_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("PulsedLight LIDAR sensor");
MODULE_LICENSE("GPL");
This driver can also be built as a module. If so, the module will
be called mlx90614.
+config MLX90632
+ tristate "MLX90632 contact-less infrared sensor with medical accuracy"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the Melexis
+ MLX90632 contact-less infrared sensor with medical accuracy
+ connected with I2C.
+
+ This driver can also be built as a module. If so, the module will
+ be called mlx90632.
+
config TMP006
tristate "TMP006 infrared thermopile sensor"
depends on I2C
obj-$(CONFIG_HID_SENSOR_TEMP) += hid-sensor-temperature.o
obj-$(CONFIG_MAXIM_THERMOCOUPLE) += maxim_thermocouple.o
obj-$(CONFIG_MLX90614) += mlx90614.o
+obj-$(CONFIG_MLX90632) += mlx90632.o
obj-$(CONFIG_TMP006) += tmp006.o
obj-$(CONFIG_TMP007) += tmp007.o
obj-$(CONFIG_TSYS01) += tsys01.o
+// SPDX-License-Identifier: GPL-2.0+
/*
* maxim_thermocouple.c - Support for Maxim thermocouple chips
*
- * Copyright (C) 2016 Matt Ranostay <mranostay@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2016-2018 Matt Ranostay
+ * Author: <matt.ranostay@konsulko.com>
*/
#include <linux/module.h>
};
module_spi_driver(maxim_thermocouple_driver);
-MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
MODULE_DESCRIPTION("Maxim thermocouple sensors");
MODULE_LICENSE("GPL");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mlx90632.c - Melexis MLX90632 contactless IR temperature sensor
+ *
+ * Copyright (c) 2017 Melexis <cmo@melexis.com>
+ *
+ * Driver for the Melexis MLX90632 I2C 16-bit IR thermopile sensor
+ */
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/math64.h>
+#include <linux/of.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/* Memory sections addresses */
+#define MLX90632_ADDR_RAM 0x4000 /* Start address of ram */
+#define MLX90632_ADDR_EEPROM 0x2480 /* Start address of user eeprom */
+
+/* EEPROM addresses - used at startup */
+#define MLX90632_EE_CTRL 0x24d4 /* Control register initial value */
+#define MLX90632_EE_I2C_ADDR 0x24d5 /* I2C address register initial value */
+#define MLX90632_EE_VERSION 0x240b /* EEPROM version reg address */
+#define MLX90632_EE_P_R 0x240c /* P_R calibration register 32bit */
+#define MLX90632_EE_P_G 0x240e /* P_G calibration register 32bit */
+#define MLX90632_EE_P_T 0x2410 /* P_T calibration register 32bit */
+#define MLX90632_EE_P_O 0x2412 /* P_O calibration register 32bit */
+#define MLX90632_EE_Aa 0x2414 /* Aa calibration register 32bit */
+#define MLX90632_EE_Ab 0x2416 /* Ab calibration register 32bit */
+#define MLX90632_EE_Ba 0x2418 /* Ba calibration register 32bit */
+#define MLX90632_EE_Bb 0x241a /* Bb calibration register 32bit */
+#define MLX90632_EE_Ca 0x241c /* Ca calibration register 32bit */
+#define MLX90632_EE_Cb 0x241e /* Cb calibration register 32bit */
+#define MLX90632_EE_Da 0x2420 /* Da calibration register 32bit */
+#define MLX90632_EE_Db 0x2422 /* Db calibration register 32bit */
+#define MLX90632_EE_Ea 0x2424 /* Ea calibration register 32bit */
+#define MLX90632_EE_Eb 0x2426 /* Eb calibration register 32bit */
+#define MLX90632_EE_Fa 0x2428 /* Fa calibration register 32bit */
+#define MLX90632_EE_Fb 0x242a /* Fb calibration register 32bit */
+#define MLX90632_EE_Ga 0x242c /* Ga calibration register 32bit */
+
+#define MLX90632_EE_Gb 0x242e /* Gb calibration register 16bit */
+#define MLX90632_EE_Ka 0x242f /* Ka calibration register 16bit */
+
+#define MLX90632_EE_Ha 0x2481 /* Ha customer calib value reg 16bit */
+#define MLX90632_EE_Hb 0x2482 /* Hb customer calib value reg 16bit */
+
+/* Register addresses - volatile */
+#define MLX90632_REG_I2C_ADDR 0x3000 /* Chip I2C address register */
+
+/* Control register address - volatile */
+#define MLX90632_REG_CONTROL 0x3001 /* Control Register address */
+#define MLX90632_CFG_PWR_MASK GENMASK(2, 1) /* PowerMode Mask */
+/* PowerModes statuses */
+#define MLX90632_PWR_STATUS(ctrl_val) (ctrl_val << 1)
+#define MLX90632_PWR_STATUS_HALT MLX90632_PWR_STATUS(0) /* hold */
+#define MLX90632_PWR_STATUS_SLEEP_STEP MLX90632_PWR_STATUS(1) /* sleep step*/
+#define MLX90632_PWR_STATUS_STEP MLX90632_PWR_STATUS(2) /* step */
+#define MLX90632_PWR_STATUS_CONTINUOUS MLX90632_PWR_STATUS(3) /* continuous*/
+
+/* Device status register - volatile */
+#define MLX90632_REG_STATUS 0x3fff /* Device status register */
+#define MLX90632_STAT_BUSY BIT(10) /* Device busy indicator */
+#define MLX90632_STAT_EE_BUSY BIT(9) /* EEPROM busy indicator */
+#define MLX90632_STAT_BRST BIT(8) /* Brown out reset indicator */
+#define MLX90632_STAT_CYCLE_POS GENMASK(6, 2) /* Data position */
+#define MLX90632_STAT_DATA_RDY BIT(0) /* Data ready indicator */
+
+/* RAM_MEAS address-es for each channel */
+#define MLX90632_RAM_1(meas_num) (MLX90632_ADDR_RAM + 3 * meas_num)
+#define MLX90632_RAM_2(meas_num) (MLX90632_ADDR_RAM + 3 * meas_num + 1)
+#define MLX90632_RAM_3(meas_num) (MLX90632_ADDR_RAM + 3 * meas_num + 2)
+
+/* Magic constants */
+#define MLX90632_ID_MEDICAL 0x0105 /* EEPROM DSPv5 Medical device id */
+#define MLX90632_ID_CONSUMER 0x0205 /* EEPROM DSPv5 Consumer device id */
+#define MLX90632_RESET_CMD 0x0006 /* Reset sensor (address or global) */
+#define MLX90632_REF_12 12LL /**< ResCtrlRef value of Ch 1 or Ch 2 */
+#define MLX90632_REF_3 12LL /**< ResCtrlRef value of Channel 3 */
+#define MLX90632_MAX_MEAS_NUM 31 /**< Maximum measurements in list */
+#define MLX90632_SLEEP_DELAY_MS 3000 /**< Autosleep delay */
+
+struct mlx90632_data {
+ struct i2c_client *client;
+ struct mutex lock; /* Multiple reads for single measurement */
+ struct regmap *regmap;
+ u16 emissivity;
+};
+
+static const struct regmap_range mlx90632_volatile_reg_range[] = {
+ regmap_reg_range(MLX90632_REG_I2C_ADDR, MLX90632_REG_CONTROL),
+ regmap_reg_range(MLX90632_REG_STATUS, MLX90632_REG_STATUS),
+ regmap_reg_range(MLX90632_RAM_1(0),
+ MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)),
+};
+
+static const struct regmap_access_table mlx90632_volatile_regs_tbl = {
+ .yes_ranges = mlx90632_volatile_reg_range,
+ .n_yes_ranges = ARRAY_SIZE(mlx90632_volatile_reg_range),
+};
+
+static const struct regmap_range mlx90632_read_reg_range[] = {
+ regmap_reg_range(MLX90632_EE_VERSION, MLX90632_EE_Ka),
+ regmap_reg_range(MLX90632_EE_CTRL, MLX90632_EE_I2C_ADDR),
+ regmap_reg_range(MLX90632_EE_Ha, MLX90632_EE_Hb),
+ regmap_reg_range(MLX90632_REG_I2C_ADDR, MLX90632_REG_CONTROL),
+ regmap_reg_range(MLX90632_REG_STATUS, MLX90632_REG_STATUS),
+ regmap_reg_range(MLX90632_RAM_1(0),
+ MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)),
+};
+
+static const struct regmap_access_table mlx90632_readable_regs_tbl = {
+ .yes_ranges = mlx90632_read_reg_range,
+ .n_yes_ranges = ARRAY_SIZE(mlx90632_read_reg_range),
+};
+
+static const struct regmap_range mlx90632_no_write_reg_range[] = {
+ regmap_reg_range(MLX90632_EE_VERSION, MLX90632_EE_Ka),
+ regmap_reg_range(MLX90632_RAM_1(0),
+ MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)),
+};
+
+static const struct regmap_access_table mlx90632_writeable_regs_tbl = {
+ .no_ranges = mlx90632_no_write_reg_range,
+ .n_no_ranges = ARRAY_SIZE(mlx90632_no_write_reg_range),
+};
+
+static const struct regmap_config mlx90632_regmap = {
+ .reg_bits = 16,
+ .val_bits = 16,
+
+ .volatile_table = &mlx90632_volatile_regs_tbl,
+ .rd_table = &mlx90632_readable_regs_tbl,
+ .wr_table = &mlx90632_writeable_regs_tbl,
+
+ .use_single_rw = true,
+ .reg_format_endian = REGMAP_ENDIAN_BIG,
+ .val_format_endian = REGMAP_ENDIAN_BIG,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static s32 mlx90632_pwr_set_sleep_step(struct regmap *regmap)
+{
+ return regmap_update_bits(regmap, MLX90632_REG_CONTROL,
+ MLX90632_CFG_PWR_MASK,
+ MLX90632_PWR_STATUS_SLEEP_STEP);
+}
+
+static s32 mlx90632_pwr_continuous(struct regmap *regmap)
+{
+ return regmap_update_bits(regmap, MLX90632_REG_CONTROL,
+ MLX90632_CFG_PWR_MASK,
+ MLX90632_PWR_STATUS_CONTINUOUS);
+}
+
+/**
+ * mlx90632_perform_measurement - Trigger and retrieve current measurement cycle
+ * @*data: pointer to mlx90632_data object containing regmap information
+ *
+ * Perform a measurement and return latest measurement cycle position reported
+ * by sensor. This is a blocking function for 500ms, as that is default sensor
+ * refresh rate.
+ */
+static int mlx90632_perform_measurement(struct mlx90632_data *data)
+{
+ int ret, tries = 100;
+ unsigned int reg_status;
+
+ ret = regmap_update_bits(data->regmap, MLX90632_REG_STATUS,
+ MLX90632_STAT_DATA_RDY, 0);
+ if (ret < 0)
+ return ret;
+
+ while (tries-- > 0) {
+ ret = regmap_read(data->regmap, MLX90632_REG_STATUS,
+ ®_status);
+ if (ret < 0)
+ return ret;
+ if (reg_status & MLX90632_STAT_DATA_RDY)
+ break;
+ usleep_range(10000, 11000);
+ }
+
+ if (tries < 0) {
+ dev_err(&data->client->dev, "data not ready");
+ return -ETIMEDOUT;
+ }
+
+ return (reg_status & MLX90632_STAT_CYCLE_POS) >> 2;
+}
+
+static int mlx90632_channel_new_select(int perform_ret, uint8_t *channel_new,
+ uint8_t *channel_old)
+{
+ switch (perform_ret) {
+ case 1:
+ *channel_new = 1;
+ *channel_old = 2;
+ break;
+ case 2:
+ *channel_new = 2;
+ *channel_old = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int mlx90632_read_ambient_raw(struct regmap *regmap,
+ s16 *ambient_new_raw, s16 *ambient_old_raw)
+{
+ int ret;
+ unsigned int read_tmp;
+
+ ret = regmap_read(regmap, MLX90632_RAM_3(1), &read_tmp);
+ if (ret < 0)
+ return ret;
+ *ambient_new_raw = (s16)read_tmp;
+
+ ret = regmap_read(regmap, MLX90632_RAM_3(2), &read_tmp);
+ if (ret < 0)
+ return ret;
+ *ambient_old_raw = (s16)read_tmp;
+
+ return ret;
+}
+
+static int mlx90632_read_object_raw(struct regmap *regmap,
+ int perform_measurement_ret,
+ s16 *object_new_raw, s16 *object_old_raw)
+{
+ int ret;
+ unsigned int read_tmp;
+ s16 read;
+ u8 channel = 0;
+ u8 channel_old = 0;
+
+ ret = mlx90632_channel_new_select(perform_measurement_ret, &channel,
+ &channel_old);
+ if (ret != 0)
+ return ret;
+
+ ret = regmap_read(regmap, MLX90632_RAM_2(channel), &read_tmp);
+ if (ret < 0)
+ return ret;
+
+ read = (s16)read_tmp;
+
+ ret = regmap_read(regmap, MLX90632_RAM_1(channel), &read_tmp);
+ if (ret < 0)
+ return ret;
+ *object_new_raw = (read + (s16)read_tmp) / 2;
+
+ ret = regmap_read(regmap, MLX90632_RAM_2(channel_old), &read_tmp);
+ if (ret < 0)
+ return ret;
+ read = (s16)read_tmp;
+
+ ret = regmap_read(regmap, MLX90632_RAM_1(channel_old), &read_tmp);
+ if (ret < 0)
+ return ret;
+ *object_old_raw = (read + (s16)read_tmp) / 2;
+
+ return ret;
+}
+
+static int mlx90632_read_all_channel(struct mlx90632_data *data,
+ s16 *ambient_new_raw, s16 *ambient_old_raw,
+ s16 *object_new_raw, s16 *object_old_raw)
+{
+ s32 ret, measurement;
+
+ mutex_lock(&data->lock);
+ measurement = mlx90632_perform_measurement(data);
+ if (measurement < 0) {
+ ret = measurement;
+ goto read_unlock;
+ }
+ ret = mlx90632_read_ambient_raw(data->regmap, ambient_new_raw,
+ ambient_old_raw);
+ if (ret < 0)
+ goto read_unlock;
+
+ ret = mlx90632_read_object_raw(data->regmap, measurement,
+ object_new_raw, object_old_raw);
+read_unlock:
+ mutex_unlock(&data->lock);
+ return ret;
+}
+
+static int mlx90632_read_ee_register(struct regmap *regmap, u16 reg_lsb,
+ s32 *reg_value)
+{
+ s32 ret;
+ unsigned int read;
+ u32 value;
+
+ ret = regmap_read(regmap, reg_lsb, &read);
+ if (ret < 0)
+ return ret;
+
+ value = read;
+
+ ret = regmap_read(regmap, reg_lsb + 1, &read);
+ if (ret < 0)
+ return ret;
+
+ *reg_value = (read << 16) | (value & 0xffff);
+
+ return 0;
+}
+
+static s64 mlx90632_preprocess_temp_amb(s16 ambient_new_raw,
+ s16 ambient_old_raw, s16 Gb)
+{
+ s64 VR_Ta, kGb, tmp;
+
+ kGb = ((s64)Gb * 1000LL) >> 10ULL;
+ VR_Ta = (s64)ambient_old_raw * 1000000LL +
+ kGb * div64_s64(((s64)ambient_new_raw * 1000LL),
+ (MLX90632_REF_3));
+ tmp = div64_s64(
+ div64_s64(((s64)ambient_new_raw * 1000000000000LL),
+ (MLX90632_REF_3)), VR_Ta);
+ return div64_s64(tmp << 19ULL, 1000LL);
+}
+
+static s64 mlx90632_preprocess_temp_obj(s16 object_new_raw, s16 object_old_raw,
+ s16 ambient_new_raw,
+ s16 ambient_old_raw, s16 Ka)
+{
+ s64 VR_IR, kKa, tmp;
+
+ kKa = ((s64)Ka * 1000LL) >> 10ULL;
+ VR_IR = (s64)ambient_old_raw * 1000000LL +
+ kKa * div64_s64(((s64)ambient_new_raw * 1000LL),
+ (MLX90632_REF_3));
+ tmp = div64_s64(
+ div64_s64(((s64)((object_new_raw + object_old_raw) / 2)
+ * 1000000000000LL), (MLX90632_REF_12)),
+ VR_IR);
+ return div64_s64((tmp << 19ULL), 1000LL);
+}
+
+static s32 mlx90632_calc_temp_ambient(s16 ambient_new_raw, s16 ambient_old_raw,
+ s32 P_T, s32 P_R, s32 P_G, s32 P_O,
+ s16 Gb)
+{
+ s64 Asub, Bsub, Ablock, Bblock, Cblock, AMB, sum;
+
+ AMB = mlx90632_preprocess_temp_amb(ambient_new_raw, ambient_old_raw,
+ Gb);
+ Asub = ((s64)P_T * 10000000000LL) >> 44ULL;
+ Bsub = AMB - (((s64)P_R * 1000LL) >> 8ULL);
+ Ablock = Asub * (Bsub * Bsub);
+ Bblock = (div64_s64(Bsub * 10000000LL, P_G)) << 20ULL;
+ Cblock = ((s64)P_O * 10000000000LL) >> 8ULL;
+
+ sum = div64_s64(Ablock, 1000000LL) + Bblock + Cblock;
+
+ return div64_s64(sum, 10000000LL);
+}
+
+static s32 mlx90632_calc_temp_object_iteration(s32 prev_object_temp, s64 object,
+ s64 TAdut, s32 Fa, s32 Fb,
+ s32 Ga, s16 Ha, s16 Hb,
+ u16 emissivity)
+{
+ s64 calcedKsTO, calcedKsTA, ir_Alpha, TAdut4, Alpha_corr;
+ s64 Ha_customer, Hb_customer;
+
+ Ha_customer = ((s64)Ha * 1000000LL) >> 14ULL;
+ Hb_customer = ((s64)Hb * 100) >> 10ULL;
+
+ calcedKsTO = ((s64)((s64)Ga * (prev_object_temp - 25 * 1000LL)
+ * 1000LL)) >> 36LL;
+ calcedKsTA = ((s64)(Fb * (TAdut - 25 * 1000000LL))) >> 36LL;
+ Alpha_corr = div64_s64((((s64)(Fa * 10000000000LL) >> 46LL)
+ * Ha_customer), 1000LL);
+ Alpha_corr *= ((s64)(1 * 1000000LL + calcedKsTO + calcedKsTA));
+ Alpha_corr = emissivity * div64_s64(Alpha_corr, 100000LL);
+ Alpha_corr = div64_s64(Alpha_corr, 1000LL);
+ ir_Alpha = div64_s64((s64)object * 10000000LL, Alpha_corr);
+ TAdut4 = (div64_s64(TAdut, 10000LL) + 27315) *
+ (div64_s64(TAdut, 10000LL) + 27315) *
+ (div64_s64(TAdut, 10000LL) + 27315) *
+ (div64_s64(TAdut, 10000LL) + 27315);
+
+ return (int_sqrt64(int_sqrt64(ir_Alpha * 1000000000000LL + TAdut4))
+ - 27315 - Hb_customer) * 10;
+}
+
+static s32 mlx90632_calc_temp_object(s64 object, s64 ambient, s32 Ea, s32 Eb,
+ s32 Fa, s32 Fb, s32 Ga, s16 Ha, s16 Hb,
+ u16 tmp_emi)
+{
+ s64 kTA, kTA0, TAdut;
+ s64 temp = 25000;
+ s8 i;
+
+ kTA = (Ea * 1000LL) >> 16LL;
+ kTA0 = (Eb * 1000LL) >> 8LL;
+ TAdut = div64_s64(((ambient - kTA0) * 1000000LL), kTA) + 25 * 1000000LL;
+
+ /* Iterations of calculation as described in datasheet */
+ for (i = 0; i < 5; ++i) {
+ temp = mlx90632_calc_temp_object_iteration(temp, object, TAdut,
+ Fa, Fb, Ga, Ha, Hb,
+ tmp_emi);
+ }
+ return temp;
+}
+
+static int mlx90632_calc_object_dsp105(struct mlx90632_data *data, int *val)
+{
+ s32 ret;
+ s32 Ea, Eb, Fa, Fb, Ga;
+ unsigned int read_tmp;
+ s16 Ha, Hb, Gb, Ka;
+ s16 ambient_new_raw, ambient_old_raw, object_new_raw, object_old_raw;
+ s64 object, ambient;
+
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Ea, &Ea);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Eb, &Eb);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Fa, &Fa);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Fb, &Fb);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Ga, &Ga);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(data->regmap, MLX90632_EE_Ha, &read_tmp);
+ if (ret < 0)
+ return ret;
+ Ha = (s16)read_tmp;
+ ret = regmap_read(data->regmap, MLX90632_EE_Hb, &read_tmp);
+ if (ret < 0)
+ return ret;
+ Hb = (s16)read_tmp;
+ ret = regmap_read(data->regmap, MLX90632_EE_Gb, &read_tmp);
+ if (ret < 0)
+ return ret;
+ Gb = (s16)read_tmp;
+ ret = regmap_read(data->regmap, MLX90632_EE_Ka, &read_tmp);
+ if (ret < 0)
+ return ret;
+ Ka = (s16)read_tmp;
+
+ ret = mlx90632_read_all_channel(data,
+ &ambient_new_raw, &ambient_old_raw,
+ &object_new_raw, &object_old_raw);
+ if (ret < 0)
+ return ret;
+
+ ambient = mlx90632_preprocess_temp_amb(ambient_new_raw,
+ ambient_old_raw, Gb);
+ object = mlx90632_preprocess_temp_obj(object_new_raw,
+ object_old_raw,
+ ambient_new_raw,
+ ambient_old_raw, Ka);
+
+ *val = mlx90632_calc_temp_object(object, ambient, Ea, Eb, Fa, Fb, Ga,
+ Ha, Hb, data->emissivity);
+ return 0;
+}
+
+static int mlx90632_calc_ambient_dsp105(struct mlx90632_data *data, int *val)
+{
+ s32 ret;
+ unsigned int read_tmp;
+ s32 PT, PR, PG, PO;
+ s16 Gb;
+ s16 ambient_new_raw, ambient_old_raw;
+
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_R, &PR);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_G, &PG);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_T, &PT);
+ if (ret < 0)
+ return ret;
+ ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_O, &PO);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(data->regmap, MLX90632_EE_Gb, &read_tmp);
+ if (ret < 0)
+ return ret;
+ Gb = (s16)read_tmp;
+
+ ret = mlx90632_read_ambient_raw(data->regmap, &ambient_new_raw,
+ &ambient_old_raw);
+ *val = mlx90632_calc_temp_ambient(ambient_new_raw, ambient_old_raw,
+ PT, PR, PG, PO, Gb);
+ return ret;
+}
+
+static int mlx90632_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *channel, int *val,
+ int *val2, long mask)
+{
+ struct mlx90632_data *data = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_PROCESSED:
+ switch (channel->channel2) {
+ case IIO_MOD_TEMP_AMBIENT:
+ ret = mlx90632_calc_ambient_dsp105(data, val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ case IIO_MOD_TEMP_OBJECT:
+ ret = mlx90632_calc_object_dsp105(data, val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_CALIBEMISSIVITY:
+ if (data->emissivity == 1000) {
+ *val = 1;
+ *val2 = 0;
+ } else {
+ *val = 0;
+ *val2 = data->emissivity * 1000;
+ }
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mlx90632_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *channel, int val,
+ int val2, long mask)
+{
+ struct mlx90632_data *data = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBEMISSIVITY:
+ /* Confirm we are within 0 and 1.0 */
+ if (val < 0 || val2 < 0 || val > 1 ||
+ (val == 1 && val2 != 0))
+ return -EINVAL;
+ data->emissivity = val * 1000 + val2 / 1000;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct iio_chan_spec mlx90632_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .modified = 1,
+ .channel2 = IIO_MOD_TEMP_AMBIENT,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ },
+ {
+ .type = IIO_TEMP,
+ .modified = 1,
+ .channel2 = IIO_MOD_TEMP_OBJECT,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_CALIBEMISSIVITY),
+ },
+};
+
+static const struct iio_info mlx90632_info = {
+ .read_raw = mlx90632_read_raw,
+ .write_raw = mlx90632_write_raw,
+};
+
+static int mlx90632_sleep(struct mlx90632_data *data)
+{
+ regcache_mark_dirty(data->regmap);
+
+ dev_dbg(&data->client->dev, "Requesting sleep");
+ return mlx90632_pwr_set_sleep_step(data->regmap);
+}
+
+static int mlx90632_wakeup(struct mlx90632_data *data)
+{
+ int ret;
+
+ ret = regcache_sync(data->regmap);
+ if (ret < 0) {
+ dev_err(&data->client->dev,
+ "Failed to sync regmap registers: %d\n", ret);
+ return ret;
+ }
+
+ dev_dbg(&data->client->dev, "Requesting wake-up\n");
+ return mlx90632_pwr_continuous(data->regmap);
+}
+
+static int mlx90632_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct iio_dev *indio_dev;
+ struct mlx90632_data *mlx90632;
+ struct regmap *regmap;
+ int ret;
+ unsigned int read;
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mlx90632));
+ if (!indio_dev) {
+ dev_err(&client->dev, "Failed to allocate device\n");
+ return -ENOMEM;
+ }
+
+ regmap = devm_regmap_init_i2c(client, &mlx90632_regmap);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ dev_err(&client->dev, "Failed to allocate regmap: %d\n", ret);
+ return ret;
+ }
+
+ mlx90632 = iio_priv(indio_dev);
+ i2c_set_clientdata(client, indio_dev);
+ mlx90632->client = client;
+ mlx90632->regmap = regmap;
+
+ mutex_init(&mlx90632->lock);
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->name = id->name;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->info = &mlx90632_info;
+ indio_dev->channels = mlx90632_channels;
+ indio_dev->num_channels = ARRAY_SIZE(mlx90632_channels);
+
+ ret = mlx90632_wakeup(mlx90632);
+ if (ret < 0) {
+ dev_err(&client->dev, "Wakeup failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_read(mlx90632->regmap, MLX90632_EE_VERSION, &read);
+ if (ret < 0) {
+ dev_err(&client->dev, "read of version failed: %d\n", ret);
+ return ret;
+ }
+ if (read == MLX90632_ID_MEDICAL) {
+ dev_dbg(&client->dev,
+ "Detected Medical EEPROM calibration %x\n", read);
+ } else if (read == MLX90632_ID_CONSUMER) {
+ dev_dbg(&client->dev,
+ "Detected Consumer EEPROM calibration %x\n", read);
+ } else {
+ dev_err(&client->dev,
+ "EEPROM version mismatch %x (expected %x or %x)\n",
+ read, MLX90632_ID_CONSUMER, MLX90632_ID_MEDICAL);
+ return -EPROTONOSUPPORT;
+ }
+
+ mlx90632->emissivity = 1000;
+
+ pm_runtime_disable(&client->dev);
+ ret = pm_runtime_set_active(&client->dev);
+ if (ret < 0) {
+ mlx90632_sleep(mlx90632);
+ return ret;
+ }
+ pm_runtime_enable(&client->dev);
+ pm_runtime_set_autosuspend_delay(&client->dev, MLX90632_SLEEP_DELAY_MS);
+ pm_runtime_use_autosuspend(&client->dev);
+
+ return iio_device_register(indio_dev);
+}
+
+static int mlx90632_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct mlx90632_data *data = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+ pm_runtime_put_noidle(&client->dev);
+
+ mlx90632_sleep(data);
+
+ return 0;
+}
+
+static const struct i2c_device_id mlx90632_id[] = {
+ { "mlx90632", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, mlx90632_id);
+
+static const struct of_device_id mlx90632_of_match[] = {
+ { .compatible = "melexis,mlx90632" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mlx90632_of_match);
+
+static int __maybe_unused mlx90632_pm_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct mlx90632_data *data = iio_priv(indio_dev);
+
+ return mlx90632_sleep(data);
+}
+
+static int __maybe_unused mlx90632_pm_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct mlx90632_data *data = iio_priv(indio_dev);
+
+ return mlx90632_wakeup(data);
+}
+
+static UNIVERSAL_DEV_PM_OPS(mlx90632_pm_ops, mlx90632_pm_suspend,
+ mlx90632_pm_resume, NULL);
+
+static struct i2c_driver mlx90632_driver = {
+ .driver = {
+ .name = "mlx90632",
+ .of_match_table = mlx90632_of_match,
+ .pm = &mlx90632_pm_ops,
+ },
+ .probe = mlx90632_probe,
+ .remove = mlx90632_remove,
+ .id_table = mlx90632_id,
+};
+module_i2c_driver(mlx90632_driver);
+
+MODULE_AUTHOR("Crt Mori <cmo@melexis.com>");
+MODULE_DESCRIPTION("Melexis MLX90632 contactless Infra Red temperature sensor driver");
+MODULE_LICENSE("GPL v2");
if (pdata->unipolar_en)
st->conf |= AD7192_CONF_UNIPOLAR;
- if (pdata->burnout_curr_en)
+ if (pdata->burnout_curr_en && pdata->buf_en && !pdata->chop_en) {
st->conf |= AD7192_CONF_BURN;
+ } else if (pdata->burnout_curr_en) {
+ dev_warn(&st->sd.spi->dev,
+ "Can't enable burnout currents: see CHOP or buffer\n");
+ }
ret = ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
if (ret)
* @trig: data ready trigger registered with iio
* @tx: transmit buffer
* @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
+ * @buf_lock: mutex to protect tx, rx, read and write frequency
**/
struct ade7758_state {
struct spi_device *us;
#include "meter.h"
#include "ade7758.h"
-int ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
+static int __ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
{
- int ret;
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7758_state *st = iio_priv(indio_dev);
- mutex_lock(&st->buf_lock);
st->tx[0] = ADE7758_WRITE_REG(reg_address);
st->tx[1] = val;
- ret = spi_write(st->us, st->tx, 2);
+ return spi_write(st->us, st->tx, 2);
+}
+
+int ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
+{
+ int ret;
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct ade7758_state *st = iio_priv(indio_dev);
+
+ mutex_lock(&st->buf_lock);
+ ret = __ade7758_spi_write_reg_8(dev, reg_address, val);
mutex_unlock(&st->buf_lock);
return ret;
return ret;
}
-int ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
+static int __ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7758_state *st = iio_priv(indio_dev);
},
};
- mutex_lock(&st->buf_lock);
st->tx[0] = ADE7758_READ_REG(reg_address);
st->tx[1] = 0;
*val = st->rx[0];
error_ret:
+ return ret;
+}
+
+int ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct ade7758_state *st = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&st->buf_lock);
+ ret = __ade7758_spi_read_reg_8(dev, reg_address, val);
mutex_unlock(&st->buf_lock);
+
return ret;
}
{
int ret;
u8 reg, t;
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct ade7758_state *st = iio_priv(indio_dev);
switch (val) {
case 26040:
t = 3;
break;
default:
- ret = -EINVAL;
- goto out;
+ return -EINVAL;
}
- ret = ade7758_spi_read_reg_8(dev, ADE7758_WAVMODE, ®);
+ mutex_lock(&st->buf_lock);
+
+ ret = __ade7758_spi_read_reg_8(dev, ADE7758_WAVMODE, ®);
if (ret)
goto out;
reg &= ~(5 << 3);
reg |= t << 5;
- ret = ade7758_spi_write_reg_8(dev, ADE7758_WAVMODE, reg);
+ ret = __ade7758_spi_write_reg_8(dev, ADE7758_WAVMODE, reg);
out:
+ mutex_unlock(&st->buf_lock);
+
return ret;
}
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
- mutex_lock(&indio_dev->mlock);
+
ret = ade7758_read_samp_freq(&indio_dev->dev, val);
- mutex_unlock(&indio_dev->mlock);
+
return ret;
default:
return -EINVAL;
case IIO_CHAN_INFO_SAMP_FREQ:
if (val2)
return -EINVAL;
- mutex_lock(&indio_dev->mlock);
+
ret = ade7758_write_samp_freq(&indio_dev->dev, val);
- mutex_unlock(&indio_dev->mlock);
+
return ret;
default:
return -EINVAL;
};
static int ade7759_spi_write_reg_8(struct device *dev,
- u8 reg_address,
- u8 val)
+ u8 reg_address,
+ u8 val)
{
int ret;
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
/*Unlocked version of ade7759_spi_write_reg_16 function */
static int __ade7759_spi_write_reg_16(struct device *dev,
- u8 reg_address,
- u16 value)
+ u8 reg_address,
+ u16 value)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7759_state *st = iio_priv(indio_dev);
}
static int ade7759_spi_write_reg_16(struct device *dev,
- u8 reg_address,
- u16 value)
+ u8 reg_address,
+ u16 value)
{
int ret;
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
}
static int ade7759_spi_read_reg_8(struct device *dev,
- u8 reg_address,
- u8 *val)
+ u8 reg_address,
+ u8 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7759_state *st = iio_priv(indio_dev);
ret = spi_w8r8(st->us, ADE7759_READ_REG(reg_address));
if (ret < 0) {
- dev_err(&st->us->dev, "problem when reading 8 bit register 0x%02X",
- reg_address);
+ dev_err(&st->us->dev,
+ "problem when reading 8 bit register 0x%02X",
+ reg_address);
return ret;
}
*val = ret;
}
static int ade7759_spi_read_reg_16(struct device *dev,
- u8 reg_address,
- u16 *val)
+ u8 reg_address,
+ u16 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7759_state *st = iio_priv(indio_dev);
}
static int ade7759_spi_read_reg_40(struct device *dev,
- u8 reg_address,
- u64 *val)
+ u8 reg_address,
+ u64 *val)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7759_state *st = iio_priv(indio_dev);
ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
if (ret) {
- dev_err(&st->us->dev, "problem when reading 40 bit register 0x%02X",
- reg_address);
+ dev_err(&st->us->dev,
+ "problem when reading 40 bit register 0x%02X",
+ reg_address);
goto error_ret;
}
*val = ((u64)st->rx[1] << 32) | ((u64)st->rx[2] << 24) |
}
static ssize_t ade7759_read_8bit(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
int ret;
u8 val = 0;
}
static ssize_t ade7759_read_16bit(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
int ret;
u16 val = 0;
}
static ssize_t ade7759_read_40bit(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
int ret;
u64 val = 0;
}
static ssize_t ade7759_write_8bit(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
{
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
int ret;
}
static ssize_t ade7759_write_16bit(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
{
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
int ret;
int ret;
u16 val;
- ret = ade7759_spi_read_reg_16(dev,
- ADE7759_MODE,
- &val);
+ ret = ade7759_spi_read_reg_16(dev, ADE7759_MODE, &val);
if (ret < 0)
return ret;
int ret;
u16 val;
- ret = ade7759_spi_read_reg_16(dev,
- ADE7759_MODE,
- &val);
+ ret = ade7759_spi_read_reg_16(dev, ADE7759_MODE, &val);
if (ret < 0) {
dev_err(dev, "unable to power down the device, error: %d\n",
ret);
}
static ssize_t ade7759_read_frequency(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
int ret;
u16 t;
int sps;
- ret = ade7759_spi_read_reg_16(dev,
- ADE7759_MODE,
- &t);
+ ret = ade7759_spi_read_reg_16(dev, ADE7759_MODE, &t);
if (ret)
return ret;
}
static ssize_t ade7759_write_frequency(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct ade7759_state *st = iio_priv(indio_dev);
unsigned long int_sqrt(unsigned long);
+#if BITS_PER_LONG < 64
+u32 int_sqrt64(u64 x);
+#else
+static inline u32 int_sqrt64(u64 x)
+{
+ return (u32)int_sqrt(x);
+}
+#endif
+
extern void bust_spinlocks(int yes);
extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */
extern int panic_timeout;
#define AXP288_RT_BATT_V_H 0xa0
#define AXP288_RT_BATT_V_L 0xa1
+#define AXP813_ADC_RATE 0x85
+
/* Fuel Gauge */
#define AXP288_FG_RDC1_REG 0xba
#define AXP288_FG_RDC0_REG 0xbb
return y;
}
EXPORT_SYMBOL(int_sqrt);
+
+#if BITS_PER_LONG < 64
+/**
+ * int_sqrt64 - strongly typed int_sqrt function when minimum 64 bit input
+ * is expected.
+ * @x: 64bit integer of which to calculate the sqrt
+ */
+u32 int_sqrt64(u64 x)
+{
+ u64 b, m, y = 0;
+
+ if (x <= ULONG_MAX)
+ return int_sqrt((unsigned long) x);
+
+ m = 1ULL << (fls64(x) & ~1ULL);
+ while (m != 0) {
+ b = y + m;
+ y >>= 1;
+
+ if (x >= b) {
+ x -= b;
+ y += m;
+ }
+ m >>= 2;
+ }
+
+ return y;
+}
+EXPORT_SYMBOL(int_sqrt64);
+#endif
projects / linux-block.git / commitdiff