diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-20 10:23:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-20 10:23:17 +0100 |
| commit | 59142f808a5e8722e66ab1753532ed5d300a34dd (patch) | |
| tree | c8c613f06b54dceca67f4ebe0719910de0f4be24 | |
| parent | 54ef5b9db76767e91f77b0588245e6e87d891548 (diff) | |
| parent | d6ad805844c52d256c2a3ff3d60daa10d27a8b64 (diff) | |
| download | op-kernel-dev-59142f808a5e8722e66ab1753532ed5d300a34dd.zip op-kernel-dev-59142f808a5e8722e66ab1753532ed5d300a34dd.tar.gz | |
Merge tag 'iio-for-4.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of new devices, features and cleanups for IIO in the 4.17 cycle.
Outside of IIO
* Strongly typed 64bit int_sqrt function needed by the mlx90632
New device support
* adc081s
- New driver supporting adc081s, adc101s and adc121s TI ADCs.
* ad5272
- New driver supproting the ad5272 and ad5274 ADI digital potentiometers
with DT bindings.
* axp20x_adc
- support the AXP813 ADC - includes rework patches to prepare for this.
* mlx90632
- New driver with dt bindings for this IR temperature sensor.
Features
* axp20x_adc
- Add DT bindings and probing.
* dht11
- The sensor has a wider range than advertised in the datasheet - support it.
* st_lsm6dsx
- Add hardware timestamp su9pport.
Cleanups
* ABI docs
- Update email contact for Matt Ranostay
* SPDX changes
- Matt Ranostay has moved his drivers over to SPDX. Currently we are making
this an author choice in IIO.
* ad7192
- Disable burnout current on misconfiguration. No actually effect as
they simply won't work otherwise.
* ad7476
- Drop a license definition that was replicating information in SPDX tag.
* ade7758
- Expand buf_lock to cover both buffer and state protection allowing
unintented uses of mlock in the core to be removed.
* ade7759
- Align parameters to opening parenthesis.
* at91_adc
- Depend on sysfs instead of selecting it - for try wide consistency.
* ccs811
- trivial naming type for a define.
* ep93xx
- Drop a redundant return as a result checking platform_get_resource.
* hts221
- Regmap conversion which simplifies the driver somewhat.
- Clean up some restricted endian cast warnings.
- Drop a trailing whitespace from a comment
- Drop an unnecessary get_unaligned by changing to the right 16bit data type.
* ms5611
- Fix coding style in the probe function (whitespace)
* st_accel
- Use strlcpy instead of strncpy to avoid potentially truncating a string.
48 files changed, 1807 insertions, 527 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-chemical-vz89x b/Documentation/ABI/testing/sysfs-bus-iio-chemical-vz89x index c0c1ea9..d512f86 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-chemical-vz89x +++ b/Documentation/ABI/testing/sysfs-bus-iio-chemical-vz89x @@ -1,7 +1,7 @@ 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. diff --git a/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 b/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 index 147d4e8..9a17ab5 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 +++ b/Documentation/ABI/testing/sysfs-bus-iio-proximity-as3935 @@ -1,7 +1,7 @@ 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 @@ -9,7 +9,7 @@ Description: 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) diff --git a/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt new file mode 100644 index 0000000..7a63139 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt @@ -0,0 +1,48 @@ +* 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 diff --git a/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt b/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt new file mode 100644 index 0000000..f9b2eef --- /dev/null +++ b/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt @@ -0,0 +1,27 @@ +* 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>; +}; diff --git a/Documentation/devicetree/bindings/iio/temperature/mlx90632.txt b/Documentation/devicetree/bindings/iio/temperature/mlx90632.txt new file mode 100644 index 0000000..0b05812 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/temperature/mlx90632.txt @@ -0,0 +1,28 @@ +* 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>; +}; diff --git a/MAINTAINERS b/MAINTAINERS index 3bdc260..0c34d96 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8878,6 +8878,13 @@ W: http://www.melexis.com 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 diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c index 363429b..6bdec8c 100644 --- a/drivers/iio/accel/st_accel_i2c.c +++ b/drivers/iio/accel/st_accel_i2c.c @@ -159,9 +159,8 @@ static int st_accel_i2c_probe(struct i2c_client *client, 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; diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 72bc2b7..914b6f8 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -144,10 +144,9 @@ config ASPEED_ADC 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. diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c index b7706bf..fbaae4774 100644 --- a/drivers/iio/adc/ad7476.c +++ b/drivers/iio/adc/ad7476.c @@ -1,9 +1,9 @@ +// 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> @@ -56,6 +56,9 @@ enum ad7476_supported_device_ids { ID_AD7468, ID_AD7495, ID_AD7940, + ID_ADC081S, + ID_ADC101S, + ID_ADC121S, }; static irqreturn_t ad7476_trigger_handler(int irq, void *p) @@ -147,6 +150,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev, }, \ } +#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), \ @@ -192,6 +197,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = { .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 = { @@ -294,6 +311,9 @@ static const struct spi_device_id ad7476_id[] = { {"ad7910", ID_AD7467}, {"ad7920", ID_AD7466}, {"ad7940", ID_AD7940}, + {"adc081s", ID_ADC081S}, + {"adc101s", ID_ADC101S}, + {"adc121s", ID_ADC121S}, {} }; MODULE_DEVICE_TABLE(spi, ad7476_id); diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c index a30a972..7cdb8bc 100644 --- a/drivers/iio/adc/axp20x_adc.c +++ b/drivers/iio/adc/axp20x_adc.c @@ -35,8 +35,13 @@ #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) \ { \ @@ -95,6 +100,12 @@ enum axp22x_adc_channel_i { 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", @@ -197,6 +208,25 @@ static const struct iio_chan_spec axp22x_adc_channels[] = { 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) { @@ -243,6 +273,18 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev, 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) { @@ -273,6 +315,24 @@ static int axp20x_adc_scale_voltage(int channel, int *val, int *val2) } } +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) { @@ -342,6 +402,26 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val, } } +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) { @@ -425,6 +505,26 @@ static int axp22x_read_raw(struct iio_dev *indio_dev, } } +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) @@ -470,14 +570,29 @@ static const struct iio_info axp22x_adc_iio_info = { .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 { @@ -485,7 +600,8 @@ 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; }; @@ -510,9 +626,28 @@ static const struct axp_data axp22x_data = { .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); @@ -538,7 +673,16 @@ static int axp20x_probe(struct platform_device *pdev) 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; @@ -554,8 +698,7 @@ static int axp20x_probe(struct platform_device *pdev) 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) { @@ -602,6 +745,7 @@ static int axp20x_remove(struct platform_device *pdev) 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, diff --git a/drivers/iio/adc/ep93xx_adc.c b/drivers/iio/adc/ep93xx_adc.c index 81c9015..5036c392 100644 --- a/drivers/iio/adc/ep93xx_adc.c +++ b/drivers/iio/adc/ep93xx_adc.c @@ -167,10 +167,6 @@ static int ep93xx_adc_probe(struct platform_device *pdev) 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"); diff --git a/drivers/iio/adc/ti-adc161s626.c b/drivers/iio/adc/ti-adc161s626.c index 10fa767..3bbc9b9 100644 --- a/drivers/iio/adc/ti-adc161s626.c +++ b/drivers/iio/adc/ti-adc161s626.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * ti-adc161s626.c - Texas Instruments ADC161S626 1-channel differential ADC * @@ -5,17 +6,8 @@ * 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> @@ -275,6 +267,6 @@ static struct spi_driver ti_adc_driver = { }; 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"); diff --git a/drivers/iio/chemical/ams-iaq-core.c b/drivers/iio/chemical/ams-iaq-core.c index d9e5950..a0646ba 100644 --- a/drivers/iio/chemical/ams-iaq-core.c +++ b/drivers/iio/chemical/ams-iaq-core.c @@ -1,18 +1,9 @@ +// 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> @@ -194,6 +185,6 @@ static struct i2c_driver ams_iaqcore_driver = { }; 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"); diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c index 8c4e055..abfc4bb 100644 --- a/drivers/iio/chemical/atlas-ph-sensor.c +++ b/drivers/iio/chemical/atlas-ph-sensor.c @@ -1,17 +1,9 @@ +// 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> @@ -689,6 +681,6 @@ static struct i2c_driver atlas_driver = { }; 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"); diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c index fbe2431..cfaf86b 100644 --- a/drivers/iio/chemical/ccs811.c +++ b/drivers/iio/chemical/ccs811.c @@ -32,7 +32,7 @@ #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 @@ -353,7 +353,7 @@ static int ccs811_probe(struct i2c_client *client, 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; } diff --git a/drivers/iio/chemical/vz89x.c b/drivers/iio/chemical/vz89x.c index 9c9095b..415b393 100644 --- a/drivers/iio/chemical/vz89x.c +++ b/drivers/iio/chemical/vz89x.c @@ -1,18 +1,9 @@ +// 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> @@ -419,6 +410,6 @@ static struct i2c_driver vz89x_driver = { }; 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"); diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c index 91aef5d..8401050 100644 --- a/drivers/iio/health/max30100.c +++ b/drivers/iio/health/max30100.c @@ -1,17 +1,9 @@ +// 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 */ @@ -518,6 +510,6 @@ static struct i2c_driver max30100_driver = { }; 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"); diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig index 2c0fc9a..1a0d458 100644 --- a/drivers/iio/humidity/Kconfig +++ b/drivers/iio/humidity/Kconfig @@ -68,10 +68,12 @@ config HTS221 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" diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c index df6bab4..1a9f8f4 100644 --- a/drivers/iio/humidity/dht11.c +++ b/drivers/iio/humidity/dht11.c @@ -159,7 +159,7 @@ static int dht11_decode(struct dht11 *dht11, int offset) } 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; diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c index d843831..066e05f 100644 --- a/drivers/iio/humidity/hdc100x.c +++ b/drivers/iio/humidity/hdc100x.c @@ -1,17 +1,9 @@ +// 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 @@ -449,6 +441,6 @@ static struct i2c_driver hdc100x_driver = { }; 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"); diff --git a/drivers/iio/humidity/hts221.h b/drivers/iio/humidity/hts221.h index c581af8..e41a3d8 100644 --- a/drivers/iio/humidity/hts221.h +++ b/drivers/iio/humidity/hts221.h @@ -15,21 +15,8 @@ #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, @@ -44,8 +31,8 @@ struct hts221_sensor { struct hts221_hw { const char *name; struct device *dev; + struct regmap *regmap; - struct mutex lock; struct iio_trigger *trig; int irq; @@ -53,16 +40,12 @@ struct hts221_hw { 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); diff --git a/drivers/iio/humidity/hts221_buffer.c b/drivers/iio/humidity/hts221_buffer.c index e971ea4..1a94b0b 100644 --- a/drivers/iio/humidity/hts221_buffer.c +++ b/drivers/iio/humidity/hts221_buffer.c @@ -12,6 +12,8 @@ #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> @@ -38,12 +40,10 @@ static int hts221_trig_set_state(struct iio_trigger *trig, bool state) { 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 = { @@ -53,15 +53,13 @@ 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 @@ -102,8 +100,10 @@ int hts221_allocate_trigger(struct hts221_hw *hw) 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; @@ -114,9 +114,10 @@ int hts221_allocate_trigger(struct hts221_hw *hw) 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; @@ -171,15 +172,15 @@ static irqreturn_t hts221_buffer_handler_thread(int irq, void *p) /* 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; diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c index d3f7904..166946d 100644 --- a/drivers/iio/humidity/hts221_core.c +++ b/drivers/iio/humidity/hts221_core.c @@ -14,7 +14,8 @@ #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" @@ -131,38 +132,11 @@ static const struct iio_chan_spec hts221_channels[] = { 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; @@ -188,8 +162,10 @@ static int hts221_update_odr(struct hts221_hw *hw, u8 odr) 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; @@ -202,8 +178,8 @@ static int hts221_update_avg(struct hts221_hw *hw, 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) @@ -212,7 +188,9 @@ static int hts221_update_avg(struct hts221_hw *hw, 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; @@ -274,8 +252,9 @@ int hts221_set_enable(struct hts221_hw *hw, bool enable) { 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; @@ -286,38 +265,35 @@ int hts221_set_enable(struct hts221_hw *hw, bool enable) 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; @@ -332,33 +308,31 @@ static int hts221_parse_temp_caldata(struct hts221_hw *hw) 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; @@ -431,7 +405,7 @@ static int hts221_get_sensor_offset(struct hts221_hw *hw, 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); @@ -440,13 +414,13 @@ static int hts221_read_oneshot(struct hts221_hw *hw, u8 addr, int *val) 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; } @@ -582,7 +556,7 @@ static const struct iio_info hts221_info = { 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; @@ -599,9 +573,7 @@ int hts221_probe(struct device *dev, int irq, const char *name, 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) @@ -616,8 +588,9 @@ int hts221_probe(struct device *dev, int irq, const char *name, 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; @@ -673,12 +646,10 @@ static int __maybe_unused hts221_suspend(struct device *dev) { 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) @@ -688,9 +659,10 @@ 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; } diff --git a/drivers/iio/humidity/hts221_i2c.c b/drivers/iio/humidity/hts221_i2c.c index 2c97350..b5b3f40 100644 --- a/drivers/iio/humidity/hts221_i2c.c +++ b/drivers/iio/humidity/hts221_i2c.c @@ -13,61 +13,33 @@ #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[] = { diff --git a/drivers/iio/humidity/hts221_spi.c b/drivers/iio/humidity/hts221_spi.c index 55b29b5..9c005f0 100644 --- a/drivers/iio/humidity/hts221_spi.c +++ b/drivers/iio/humidity/hts221_spi.c @@ -12,76 +12,33 @@ #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[] = { diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h index 8fdd723..a3cc7cd 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -27,7 +27,7 @@ enum st_lsm6dsx_hw_id { 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) * \ @@ -58,12 +58,27 @@ struct st_lsm6dsx_fifo_ops { }; /** + * 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. * @max_fifo_size: Sensor max fifo length in FIFO words. * @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; @@ -71,6 +86,7 @@ struct st_lsm6dsx_settings { 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 { @@ -94,8 +110,7 @@ enum st_lsm6dsx_fifo_mode { * @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]; @@ -108,9 +123,7 @@ struct st_lsm6dsx_sensor { u16 watermark; u8 sip; u8 decimator; - - s64 delta_ts; - s64 ts; + s64 ts_ref; }; /** @@ -122,7 +135,8 @@ struct st_lsm6dsx_sensor { * @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. @@ -137,6 +151,7 @@ struct st_lsm6dsx_hw { enum st_lsm6dsx_fifo_mode fifo_mode; u8 enable_mask; + u8 ts_sip; u8 sip; u8 *buff; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c index 1d6aa9b..1045e02 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c @@ -46,9 +46,13 @@ #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; @@ -98,9 +102,10 @@ static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw, 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); @@ -119,6 +124,7 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw) 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) { @@ -131,9 +137,23 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw) } 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, @@ -208,6 +228,28 @@ int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor, u16 watermark) &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 @@ -231,6 +273,8 @@ static inline int st_lsm6dsx_read_block(struct st_lsm6dsx_hw *hw, u8 *data, 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. @@ -243,11 +287,13 @@ static int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *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, @@ -260,23 +306,10 @@ static int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw) 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); @@ -287,7 +320,7 @@ static int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw) * 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. * @@ -296,35 +329,65 @@ static int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw) * - 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; } @@ -379,15 +442,12 @@ static int st_lsm6dsx_update_fifo(struct iio_dev *iio_dev, bool enable) 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: @@ -399,25 +459,8 @@ 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) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index c2fa323..8656d72 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -181,6 +181,24 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { }, .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, @@ -209,6 +227,24 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { }, .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, @@ -238,6 +274,24 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { }, .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), + }, + }, }, }; @@ -630,6 +684,44 @@ static int st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw, u8 *drdy_reg) 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; @@ -654,10 +746,14 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw) 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, diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c index a8fa00e..1f112ae 100644 --- a/drivers/iio/light/apds9960.c +++ b/drivers/iio/light/apds9960.c @@ -1,17 +1,9 @@ +// 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 */ @@ -1141,6 +1133,6 @@ static struct i2c_driver apds9960_driver = { }; 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"); diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig index 8bf2825..8daf6d1 100644 --- a/drivers/iio/potentiometer/Kconfig +++ b/drivers/iio/potentiometer/Kconfig @@ -5,6 +5,16 @@ 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 diff --git a/drivers/iio/potentiometer/Makefile b/drivers/iio/potentiometer/Makefile index 1afd1e7..dbc139c 100644 --- a/drivers/iio/potentiometer/Makefile +++ b/drivers/iio/potentiometer/Makefile @@ -4,6 +4,7 @@ # # 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 diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer/ad5272.c new file mode 100644 index 0000000..154f9a5 --- /dev/null +++ b/drivers/iio/potentiometer/ad5272.c @@ -0,0 +1,231 @@ +// 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"); diff --git a/drivers/iio/potentiometer/tpl0102.c b/drivers/iio/potentiometer/tpl0102.c index 93f9d4a..ca1cce5 100644 --- a/drivers/iio/potentiometer/tpl0102.c +++ b/drivers/iio/potentiometer/tpl0102.c @@ -1,17 +1,9 @@ +// 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 */ @@ -156,6 +148,6 @@ static struct i2c_driver tpl0102_driver = { 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"); diff --git a/drivers/iio/potentiostat/lmp91000.c b/drivers/iio/potentiostat/lmp91000.c index 0077109..8571405 100644 --- a/drivers/iio/potentiostat/lmp91000.c +++ b/drivers/iio/potentiostat/lmp91000.c @@ -1,17 +1,9 @@ +// 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 */ @@ -440,6 +432,6 @@ static struct i2c_driver lmp91000_driver = { }; 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"); diff --git a/drivers/iio/pressure/ms5611.h b/drivers/iio/pressure/ms5611.h index ccda63c..ead9e9f 100644 --- a/drivers/iio/pressure/ms5611.h +++ b/drivers/iio/pressure/ms5611.h @@ -63,7 +63,7 @@ struct ms5611_state { }; 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 */ diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index b6249af..f130388 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -1,18 +1,9 @@ +// 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> @@ -502,6 +493,6 @@ static struct spi_driver as3935_driver = { }; 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"); diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c index 4d56f67..47af54f 100644 --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c @@ -1,17 +1,9 @@ +// 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 */ @@ -377,6 +369,6 @@ static struct i2c_driver lidar_driver = { }; 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"); diff --git a/drivers/iio/temperature/Kconfig b/drivers/iio/temperature/Kconfig index 5378976..82e4a62 100644 --- a/drivers/iio/temperature/Kconfig +++ b/drivers/iio/temperature/Kconfig @@ -43,6 +43,18 @@ config MLX90614 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 diff --git a/drivers/iio/temperature/Makefile b/drivers/iio/temperature/Makefile index 34bd902..34a31db 100644 --- a/drivers/iio/temperature/Makefile +++ b/drivers/iio/temperature/Makefile @@ -6,6 +6,7 @@ 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 diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index e8b7e0b..54e3832 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -1,17 +1,9 @@ +// 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> @@ -281,6 +273,6 @@ static struct spi_driver maxim_thermocouple_driver = { }; 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"); diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c new file mode 100644 index 0000000..d695ab9 --- /dev/null +++ b/drivers/iio/temperature/mlx90632.c @@ -0,0 +1,750 @@ +// 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"); diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index f015955..079a841 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -290,8 +290,12 @@ static int ad7192_setup(struct ad7192_state *st, 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) diff --git a/drivers/staging/iio/meter/ade7758.h b/drivers/staging/iio/meter/ade7758.h index 6ae78d8..2de81b5 100644 --- a/drivers/staging/iio/meter/ade7758.h +++ b/drivers/staging/iio/meter/ade7758.h @@ -111,7 +111,7 @@ * @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; diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c index 7b7ffe5..4e0dbf5 100644 --- a/drivers/staging/iio/meter/ade7758_core.c +++ b/drivers/staging/iio/meter/ade7758_core.c @@ -24,17 +24,25 @@ #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; @@ -91,7 +99,7 @@ static int ade7758_spi_write_reg_24(struct device *dev, u8 reg_address, 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); @@ -111,7 +119,6 @@ int ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val) }, }; - mutex_lock(&st->buf_lock); st->tx[0] = ADE7758_READ_REG(reg_address); st->tx[1] = 0; @@ -124,7 +131,19 @@ int ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val) *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; } @@ -484,6 +503,8 @@ static int ade7758_write_samp_freq(struct device *dev, int val) { 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: @@ -499,20 +520,23 @@ static int ade7758_write_samp_freq(struct device *dev, int val) 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; } @@ -526,9 +550,9 @@ static int ade7758_read_raw(struct iio_dev *indio_dev, 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; @@ -547,9 +571,9 @@ static int ade7758_write_raw(struct iio_dev *indio_dev, 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; diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c index d99cf50..1decb2b 100644 --- a/drivers/staging/iio/meter/ade7759.c +++ b/drivers/staging/iio/meter/ade7759.c @@ -72,8 +72,8 @@ struct ade7759_state { }; 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); @@ -91,8 +91,8 @@ static int ade7759_spi_write_reg_8(struct device *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); @@ -104,8 +104,8 @@ static int __ade7759_spi_write_reg_16(struct device *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); @@ -119,8 +119,8 @@ static int ade7759_spi_write_reg_16(struct device *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); @@ -128,8 +128,9 @@ static int ade7759_spi_read_reg_8(struct device *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; @@ -138,8 +139,8 @@ static int ade7759_spi_read_reg_8(struct device *dev, } 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); @@ -158,8 +159,8 @@ static int ade7759_spi_read_reg_16(struct device *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); @@ -179,8 +180,9 @@ static int ade7759_spi_read_reg_40(struct device *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) | @@ -192,8 +194,8 @@ error_ret: } 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; @@ -207,8 +209,8 @@ static ssize_t ade7759_read_8bit(struct device *dev, } 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; @@ -222,8 +224,8 @@ static ssize_t ade7759_read_16bit(struct device *dev, } 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; @@ -237,9 +239,9 @@ static ssize_t ade7759_read_40bit(struct device *dev, } 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; @@ -255,9 +257,9 @@ error_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; @@ -277,9 +279,7 @@ static int ade7759_reset(struct device *dev) 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; @@ -365,9 +365,7 @@ static int ade7759_stop_device(struct device *dev) 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); @@ -404,16 +402,14 @@ err_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; @@ -424,9 +420,9 @@ static ssize_t ade7759_read_frequency(struct device *dev, } 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); diff --git a/include/linux/kernel.h b/include/linux/kernel.h index ce51455..2da80e0 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -479,6 +479,15 @@ extern int func_ptr_is_kernel_text(void *ptr); 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; diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h index 080798f..82bf774 100644 --- a/include/linux/mfd/axp20x.h +++ b/include/linux/mfd/axp20x.h @@ -266,6 +266,8 @@ enum axp20x_variants { #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 diff --git a/lib/int_sqrt.c b/lib/int_sqrt.c index e2d3290..14436f4 100644 --- a/lib/int_sqrt.c +++ b/lib/int_sqrt.c @@ -38,3 +38,33 @@ unsigned long int_sqrt(unsigned long x) 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 |
