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The Linux kernel configuration item CONFIG_SENSORS_PCA9539
has multiple definitions:
drivers/i2c/chips/Kconfig
The configuration item CONFIG_SENSORS_PCA9539:
CONFIG_EXPERIMENTAL && CONFIG_GPIO_PCA953X = "n"
pca9539
If you say yes here you get support for the Philips PCA9539 16-bit I/O port.
This driver can also be built as a module. If so, the module will be called pca9539.
This driver is deprecated and will be dropped soon. Use drivers/gpio/pca953x.c instead.
drivers/i2c/chips/Kconfig
The configuration item CONFIG_SENSORS_PCA9539:
CONFIG_EXPERIMENTAL
pca9539
If you say yes here you get support for the Philips PCA9539 16-bit I/O port.
This driver can also be built as a module. If so, the module will be called pca9539.
Raw data from LKDDb:
lkddb i2c "pca9539" : CONFIG_SENSORS_PCA9539 : drivers/i2c/chips/pca9539.c # in 2.6.27–2.6.31
lkddb module pca9539 CONFIG_SENSORS_PCA9539 : drivers/i2c/chips/Kconfig : "Philips PCA9539 16-bit I/O port (DEPRECATED)" # in 2.6.13–2.6.31
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Automatically generated (in year 2025). See also LKDDb sources on GitLab