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663eb8763c
All combined i2c/i3c drivers appear to suffer from the same link time problem when CONFIG_I3C is set to 'm': arm-linux-gnueabi-ld: drivers/iio/magnetometer/mmc5633.o: in function `mmc5633_i3c_driver_init': mmc5633.c:(.init.text+0x30): undefined reference to `i3c_driver_register_with_owner' This was previously fixed every time by marking individual drivers as 'depends on I2C; depends on I3C || !I3C', but this gets tedious and is somewhat confusing. Add a Kconfig symbol 'I3C_OR_I2C' to help replace those dependencies, and use this in all the existing drivers that had already fixed it as well as the new mmc5633 driver. Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jonathan Cameron <jonathan.cameron@huawei.com> Link: https://patch.msgid.link/20260204164216.544409-1-arnd@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
37 lines
1019 B
Plaintext
37 lines
1019 B
Plaintext
# SPDX-License-Identifier: GPL-2.0
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menuconfig I3C
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tristate "I3C support"
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select I2C
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help
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I3C is a serial protocol standardized by the MIPI alliance.
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It's supposed to be backward compatible with I2C while providing
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support for high speed transfers and native interrupt support
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without the need for extra pins.
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The I3C protocol also standardizes the slave device types and is
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mainly designed to communicate with sensors.
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If you want I3C support, you should say Y here and also to the
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specific driver for your bus adapter(s) below.
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This I3C support can also be built as a module. If so, the module
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will be called i3c.
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if I3C
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source "drivers/i3c/master/Kconfig"
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endif # I3C
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config I3C_OR_I2C
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tristate
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default m if I3C=m
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default I2C
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help
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Device drivers using module_i3c_i2c_driver() can use either
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i2c or i3c hosts, but cannot be built-in for the kernel when
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CONFIG_I3C=m.
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Add 'depends on I2C_OR_I3C' in Kconfig for those drivers to
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get the correct dependencies.
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