- 05 Jan, 2019 11 commits
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Aditya Pakki authored
In function xadc_probe, xadc_write_adc_reg can return an error value when write fails. The fix checks for the return value consistent with other invocations of the latter function. Signed-off-by:
Aditya Pakki <pakki001@umn.edu> Reviewed-by:
Michal Simek <michal.simek@xilinx.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Martin Blumenstingl authored
Meson8b and Meson8m2 use the same logic to convert the ADC register value to celsius, which is different from Meson8: - Meson8 has different multiplier and divider values - Meson8 uses a 4-bit TSC (temperature sensor coefficient) which fits into the 4-bit field in the MESON_SAR_ADC_DELTA_10 register: MESON_SAR_ADC_DELTA_10_TS_C_MASK. Meson8b and Meson8m2 have a 5-bit TSC which requires writing the upper-most bit into the MESON_HHI_DPLL_TOP_0[9] register from the HHI register area. This adds support for the temperature sensor on the Meson8b and Meson8m2 SoCs by implementing the logic to write the upper-most TSC bit into the HHI register area. The SoC-specific values (temperature_trimming_bits, temperature_multiplier, temperature_divider) are added - these simply integrate into the existing infrastructure (which was implemented for Meson8) and thus require no further changes to the existing temperature calculation logic. Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:
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Martin Blumenstingl authored
Meson8b and Meson8m2 use a 5-bit wide TSC (temperature sensor coefficient). The SAR ADC registers however can only store (the lower) 4 bits. The fifth (upper-most) bit is stored inside the MESON_HHI_DPLL_TOP_0[9] register from the HHI register area. This adds a syscon property to the HHI register area so a driver can fetch the HHI register map and store the fifth TSC bit in there. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Stefan Popa authored
Document support for AD7606 Analog to Digital Converter. Signed-off-by:
Stefan Popa <stefan.popa@analog.com> Reviewed-by:
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Stefan Popa authored
Move ad7606 ADC driver out of staging and into the mainline. Signed-off-by:
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Stefan Popa authored
* Placed includes in alphabetical order * Added brackets around num and mask through out for AD760X_CHANNEL * Used single line comments where needed * Removed extra lines and spaces Signed-off-by:
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Stefan Popa authored
This patch replaces the use of a polling ring buffer with a threaded interrupt. Enabling the buffer sets the CONVST signal to high. When the rising edge of the CONVST is applied, BUSY signal goes logic high and transitions low at the end of the entire conversion process. The falling edge of the BUSY signal triggers the interrupt. ad7606_trigger_handler() is used as bottom half of the poll function. It reads data from the device and stores it in the internal buffer. Signed-off-by:
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Stefan Popa authored
This patch replaces the license text at the top of ad7606 driver files and instead adds SPDX GPL-2.0 license identifier. Signed-off-by:
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Stefan Popa authored
There is no point in having three menu entries that can be selected individually. Instead, the SPI and parallel interfaces should select AD7606. Signed-off-by:
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Kangjie Lu authored
If ad9523_write() fails, indio_dev may get incorrect data. The fix inserts a check for the return value of ad9523_write(), and it fails, returns an error. Signed-off-by:
Kangjie Lu <kjlu@umn.edu> Signed-off-by:
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Tomasz Duszynski authored
Self cleaning is especially useful in cases where sensor undergoes frequent power on/off cycles. In such scenarios it is recommended to turn self cleaning at least once per week in order to maintain reliable measurements. Self cleaning is activated by writing 1 to a dedicated attribute. Internal fan accelerates to its maximum speed and keeps spinning for about 10 seconds blowing out accumulated dust. Signed-off-by:
Tomasz Duszynski <tduszyns@gmail.com> Tested-by:
Andreas Brauchli <andreas.brauchli@sensirion.com> Signed-off-by:
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- 22 Dec, 2018 7 commits
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c: In function 'st_lsm6dsx_shub_read_reg': drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c:108:41: warning: variable 'hub_settings' set but not used [-Wunused-but-set-variable] It never used since introduction in commit c91c1c84 ("iio: imu: st_lsm6dsx: add i2c embedded controller support") Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Acked-by:
Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Signed-off-by:
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Stefan Popa authored
The driver does not have a struct of_device_id table, but supported devices are registered via Device Trees. This patch adds and OF device ID table. Signed-off-by:
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Stefan Popa authored
The 'adi' vendor prefix needs to be added to conversion-start, range, first-data and oversampling-ratio properties. Signed-off-by:
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Stefan Popa authored
When looking for the available scale or oversampling ratio, it is better to use the find_closest() macro. This simplifies the code and also does not require an exact value to be entered from the user space. Signed-off-by:
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Stefan Popa authored
Switch to devm version of request_irq, iio_triggered_buffer_setup, iio_device_register. To avoid potential ordering issues in probe, devm_add_action_or_reset() is used for the regulator_disable(). This simplifies the code and decreases the chance of bugs. Signed-off-by:
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Stefan Popa authored
This patch replaces the use of wait_event_interruptible() with wait_for_completion_timeout() when reading the result of a single conversion. In this way, if the interrupt never occurs, the program will not remain blocked. Signed-off-by:
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Andreas Brauchli authored
Add device tree support for Sensirion SGP30/SGPC3 gas sensors. Signed-off-by:
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- 16 Dec, 2018 20 commits
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Andreas Brauchli authored
Support Sensirion SGP30 and SGPC3 multi-pixel I2C gas sensors Supported Features: * Indoor Air Quality (IAQ) concentrations for - tVOC (in_concentration_voc_input) - CO2eq (in_concentration_co2_input) - SGP30 only IAQ concentrations are periodically read out by a background thread to allow the sensor to maintain its internal baseline. * Gas concentration signals - Ethanol (in_concentration_ethanol_raw) - H2 (in_concentration_h2_raw) - SGP30 only https://www.sensirion.com/file/datasheet_sgp30 https://www.sensirion.com/file/datasheet_sgpc3Signed-off-by:
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Andreas Brauchli authored
Add ethanol and H2 gas modifiers: * IIO_MOD_ETHANOL * IIO_MOD_H2 Signed-off-by:
Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by:
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Tomasz Duszynski authored
Add device tree support for Sensirion SPS30 particulate matter sensor. Signed-off-by:
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Tomasz Duszynski authored
Add support for Sensirion SPS30 particulate matter sensor. Signed-off-by:
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Tomasz Duszynski authored
Measuring particulate matter in ug / m3 (micro-grams per cubic meter) is de facto standard. Existing air quality sensors usually follow this convention and are capable of returning measurements using this unit. IIO currently does not offer suitable channel type for this type of measurements hence this patch adds this. In addition, extra modifiers are introduced used for distinguishing between fine pm1, pm2p5 and coarse pm4, pm10 particle measurements, i.e IIO_MOD_PM1, IIO_MOD_PM25 and IIO_MOD_PM4, IIO_MOD_PM10. pmX consists of particles with aerodynamic diameter less or equal to X micrometers. Signed-off-by:
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Hardik Singh Rathore authored
Initialization is unnecessary when the variable is written before it is read. There were some occasions in which the driver would initialize `ret' during declaration without need. Signed-off-by:
Hardik Singh Rathore <hardiksingh.k@gmail.com> Signed-off-by:
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Slawomir Stepien authored
The ad7280_attr_init function has been split into more specific functions to increase the code readability. Signed-off-by:
Slawomir Stepien <sst@poczta.fm> Signed-off-by:
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Slawomir Stepien authored
The ad7280_channel_init function has been split into more specific functions to increase the code readability. The setting of channel's scan_type.shift to 0, has been removed, since it is the default value. Signed-off-by:
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Marcelo Schmitt authored
Add a devicetree documentation for the ad5933 and ad5934 impedance converter, network analyzer. Signed-off-by:
Marcelo Schmitt <marcelo.schmitt1@gmail.com> Signed-off-by:
Gabriel Capella <gabriel@capella.pro> Co-Developed-by:
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Marcelo Schmitt authored
Add the option to specify the external clock (MCLK) using the clock framework. Also remove the old platform data structure. Signed-off-by:
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Marcelo Schmitt authored
Set a single voltage regulator for all voltage references. Remove voltage reference value from default platafrom data struct. Signed-off-by:
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Shreeya Patel authored
ADT7316 driver no more uses platform data and hence use device tree data instead of platform data for assigning irq_type field and implement this in adt7316_irq_setup function. Switch case figures out the type of irq and if it's the default case then assign the default value to the irq_type i.e. irq_type = IRQF_TRIGGER_LOW Move devm_request_threaded_irq() and assignment of chip->config1 into the adt7316_setup_irq() to unclutter the code in probe function. Signed-off-by:
Shreeya Patel <shreeya.patel23498@gmail.com> Signed-off-by:
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Hardik Singh Rathore authored
Initialization is unnecessary when the variable is written before it is read. There were some occasions in which the driver would initialize `ret' during declaration without need. Purely a cosmetic change with no functional impact. Signed-off-by:
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Jeremy Fertic authored
Change LDCA to LDAC. Signed-off-by:
Jeremy Fertic <jeremyfertic@gmail.com> Signed-off-by:
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Jeremy Fertic authored
Based on the output of adt7316_show_all_DAC_update_modes() and adt7316_show_DAC_update_mode(), adt7316_store_DAC_update_mode() should expect the user to enter an integer input from 0 to 3. The user input is currently expected to account for the actual bit positions in the register. For example, choosing option 3 would require a write of 0x30 (actually 48 since it expects base 10). To address this inconsistency, create a shift macro to be used in the valid input check as well as the calculation for the register write. Signed-off-by:
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Jeremy Fertic authored
The option to allow the external vref to bypass the reference buffer is only available for adt7316/7/8. Remove the attributes for adt751x as well as the chip->id checks from the show and store functions. Signed-off-by:
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Jeremy Fertic authored
With adt7516/7/9, internal vref is available for dacs a and b, dacs c and d, or all dacs. The driver doesn't currently support internal vref for all dacs. Change the else if to an if so both bits are checked rather than just one or the other. Signed-off-by:
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Jeremy Fertic authored
The dac internal vref settings are part of the ldac config register rather than the dac config register. Change the variable being used so the read returns the correct result. Whilst a fix, it is for a driver in heavy churn so do not backport to stable without taking considerable care and testing. Signed-off-by:
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Jeremy Fertic authored
ADT7316_DA_EN_VIA_DAC_LDCA is set when the dac and ldac registers are being used to update the dacs instead of the ldac pin. ADT7516_SEL_AIN3 is an adc input that shares the ldac pin. Only set these bits if an ldac pin is not being used. This could be backported to stable, but note there are various other bugs that probably make that a waste of time. Signed-off-by:
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Jeremy Fertic authored
Change two register addresses and one bit definition to match the datasheet. Note that there are many issues in this driver so I would not suggest backporting these fixes to stable trees. Signed-off-by:
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- 13 Dec, 2018 1 commit
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Greg Kroah-Hartman authored
Merge tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of IIO new device support, features and cleanups for the 4.21 cycle. Staging graduation * ad2s90 - Driver for this resolver to digital chip. New drivers and device support. * ad5686 - Add support for ad5310r DAC and associated fix in value read back. * exynos-adc - Support for S5PV210 which is slightly different from other parts. * mcp41010 - Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and MCP42100 microchip potentiometers. New ACPI ids. * ak8975 - AKM9911 ACPI HID. * kxcjk-1013 - KXJ2109 ACPI HID. - KIOX010A ACPI HID. New features * ad5933 - Explicit DT binding. * ad2s90 - Explicit DT binding including dropping spi setup that is done via dt in favour of verifying the settings form DT. * adt7316 - Explicit DT binding and support for gpio, irq_flags etc. * stm32-adc - Runtime power management. Minor fixes and cleanups * core - Protect against missing info structure. * ad2s90 - SPDX - Add documentation fo the mutex. * ad7280a - Check allocation failure. - Fix an accidental replacement of an error return. * adt7316 - Switch some variables to be local and rename for consistency with other drivers. - Revert a false handling of 0 as an error introduced earlier this cycle. * bmi160 - Use devm functions throughout probe() to avoid need for remove(). * hid-sensor-hub - White space cleanup. * hts221 - MAINTAINERS entry. * lis302 - Use generic name in the DT binding doc. * Messon-saradc - Check for allocation error. - Fix some presented clock names that break clk debugfs. * qcom-spmi-adc - A fix for initialization of the prescale property. Came late in the cycle, so merge window is probably the best route for this. * st_lsm6dsx - Allow for variable read length to support wider range of slave devices. * tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (37 commits) iio: adc: qcom-spmi-adc5: Initialize prescale properly dt-bindings: iio: adc: exynos-adc: Add S5PV210 variant iio: adc: Allow selection of Exynos ADC on S5PV210 iio: adc: exynos-adc: Add S5PV210 variant iio: bmi160: use all devm functions in probe iio: dac: ad5686: fix bit shift read register iio:dac:ad5686: Add AD5310R support Revert "Staging: iio: adt7316: Add an extra check for 'ret' equals to 0" dt-bindings: iio: accel: use a generic node name for lis302 iio: core: check 'info' value before registering the device staging: iio: adc: ad7280a: fix overwrite of the returned value staging: iio: adc: ad7280a: check for devm_kasprint() failure iio: humidity: hts221: add entry in MAINTAINERS file iio: magnetometer: ak8975: Add the "AKM9911" ACPI HID staging:iio:ad2s90: Move out of staging staging:iio:ad2s90: Add comment to device state mutex staging:iio:ad2s90: Replace license text w/ SPDX identifier dt-bindings:iio:resolver: Add docs for ad2s90 staging:iio:ad2s90: Add max frequency check at probe staging:iio:ad2s90: Remove spi setup that should be done via dt ...
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- 12 Dec, 2018 1 commit
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Evan Green authored
adc5_get_dt_data uses a local, prop, feeds it to adc5_get_dt_channel_data, and then puts the result into adc->chan_props. The problem is adc5_get_dt_channel_data may not initialize that structure fully, so a garbage value is used for prescale if the optional "qcom,pre-scaling" is not defined in DT. adc5_read_raw then uses this as an array index, generating a crash that looks like this: [ 6.683186] Unable to handle kernel paging request at virtual address ffffff90e78c7964 Call trace: qcom_vadc_scale_code_voltage_factor+0x74/0x104 qcom_vadc_scale_hw_calib_die_temp+0x20/0x60 qcom_adc5_hw_scale+0x78/0xa4 adc5_read_raw+0x3d0/0x65c iio_channel_read+0x240/0x30c iio_read_channel_processed+0x10c/0x150 qpnp_tm_get_temp+0xc0/0x40c of_thermal_get_temp+0x7c/0x98 thermal_zone_get_temp+0xac/0xd8 thermal_zone_device_update+0xc0/0x38c qpnp_tm_probe+0x624/0x81c platform_drv_probe+0xe4/0x11c really_probe+0x188/0x3fc driver_probe_device+0xb8/0x188 __device_attach_driver+0x114/0x180 bus_for_each_drv+0xd8/0x118 __device_attach+0x180/0x27c device_initial_probe+0x20/0x2c bus_probe_device+0x78/0x124 deferred_probe_work_func+0xfc/0x138 process_one_work+0x3d8/0x8b0 process_scheduled_works+0x48/0x6c worker_thread+0x488/0x7cc kthread+0x24c/0x264 ret_from_fork+0x10/0x18 Unfortunately, when I went to add the initializer for this and tried to boot it, my machine shut down immediately, complaining that it was hotter than the sun. It appears that adc5_chans_pmic and adc5_chans_rev2 were initializing prescale_index as if it were directly a divisor, rather than the index into adc5_prescale_ratios that it is. Fix the uninitialized value, and change the static initialization to use indices into adc5_prescale_ratios. Signed-off-by:
Evan Green <evgreen@chromium.org> Reviewed-by:
Matthias Kaehlcke <mka@chromium.org> Cc: <Stable@vger.kernel.org> Signed-off-by:
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