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>
60 lines
1.4 KiB
Plaintext
60 lines
1.4 KiB
Plaintext
# Copyright (c) 2020 STMicroelectronics
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# SPDX-License-Identifier: Apache-2.0
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menuconfig IIS2MDC
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bool "IIS2MDC Magnetometer"
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default y
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depends on DT_HAS_ST_IIS2MDC_ENABLED
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select I2C if $(dt_compat_on_bus,$(DT_COMPAT_ST_IIS2MDC),i2c)
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select SPI if $(dt_compat_on_bus,$(DT_COMPAT_ST_IIS2MDC),spi)
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select HAS_STMEMSC
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select USE_STDC_IIS2MDC
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help
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Enable driver for IIS2MDC I2C-based magnetometer sensor.
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if IIS2MDC
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choice IIS2MDC_TRIGGER_MODE
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prompt "Trigger mode"
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default IIS2MDC_TRIGGER_GLOBAL_THREAD
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help
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Specify the type of triggering to be used by the driver.
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config IIS2MDC_TRIGGER_NONE
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bool "No trigger"
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config IIS2MDC_TRIGGER_GLOBAL_THREAD
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bool "Use global thread"
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depends on GPIO
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select IIS2MDC_TRIGGER
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config IIS2MDC_TRIGGER_OWN_THREAD
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bool "Use own thread"
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depends on GPIO
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select IIS2MDC_TRIGGER
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endchoice # IIS2MDC_TRIGGER_MODE
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config IIS2MDC_TRIGGER
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bool
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config IIS2MDC_THREAD_PRIORITY
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int "Thread priority"
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depends on IIS2MDC_TRIGGER_OWN_THREAD
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default 10
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help
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Priority of thread used by the driver to handle interrupts.
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config IIS2MDC_THREAD_STACK_SIZE
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int "Thread stack size"
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depends on IIS2MDC_TRIGGER_OWN_THREAD
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default 1024
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help
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Stack size of thread used by the driver to handle interrupts.
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config IIS2MDC_MAG_ODR_RUNTIME
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bool "Set magnetometer sampling frequency (ODR) at runtime (default: 10 Hz)"
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default y
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endif # IIS2MDC
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