df81fef944
This change in pattern is meant to address a misconfiguration issue that can occur for sensors that support being on multiple busses like I2C & SPI. For example, you can have a configuration in which such a sensor is on the I2C bus in the devicetree and the sensor is enabled. However the application configuration enables CONFIG_SPI=y and CONFIG_I2C=n and this will cause the sensor driver to be built by default, however since we don't have the I2C bus enabled the driver will not compile correctly. Previously we had been adding to board Kconfig.defconfig something like: config I2C default y if SENSOR This pattern doesn't scale well and may differ from what an application specific need/use is. So instead move to a pattern in which we leave the default enablement up to the devicetree "status" property for the sensor. We then have the Kconfig move from 'depends on <BUS>' to 'select <BUS>' and in the case of drivers that support multiple busses we have the Kconfig be: 'select <BUS> if $(dt_compat_on_bus,$(<DT_COMPAT>),<BUS>) for each bus type the sensor supports. This removes the need to add Kconfig logic to each board and enables the bus subsystem and bus controller driver if the sensor requires it by default in the build system. Fixes: #48518 Signed-off-by: Kumar Gala <galak@kernel.org>
42 lines
1.0 KiB
Plaintext
42 lines
1.0 KiB
Plaintext
# LM77 temperature sensor configuration
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#
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# Copyright (c) 2021 Vestas Wind Systems A/S
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# SPDX-License-Identifier: Apache-2.0
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menuconfig LM77
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bool "LM77 Temperature Sensor"
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default y
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depends on DT_HAS_LM77_ENABLED
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default $(dt_compat_enabled,lm77)
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select I2C
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help
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Enable driver for the LM77 digital temperature sensor with 2-wire
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interface.
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config LM77_TRIGGER
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bool "Trigger support"
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depends on LM77
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default y
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help
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Enable trigger support for the LM77 digital temperature sensor.
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Trigger events are based on the LM77 INT signal (configured for event
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interrupt mode). After a trigger event the LM77 temperature must be
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read in order to reset and rearm the trigger.
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if LM77_TRIGGER
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config LM77_TRIGGER_THREAD_STACK_SIZE
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int "Stack size for the trigger workqueue thread"
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default 512
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help
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Size of the stack used for the internal trigger workqueue thread.
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config LM77_TRIGGER_THREAD_PRIO
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int "Priority for the trigger workqueue thread"
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default 0
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help
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Priority level for the internal trigger workqueue thread.
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endif # LM77_TRIGGER
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