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authorHans de Goede <hdegoede@redhat.com>2024-12-09 19:35:55 +0100
committerIlpo Järvinen <ilpo.jarvinen@linux.intel.com>2024-12-17 13:13:05 +0200
commitcc0809b752c74b768845f6e049b419c32d954a1a (patch)
treed9affac1c9ce158938e0317ba646df399462ac95 /tools/perf/scripts/python/export-to-postgresql.py
parentbdf0ea9d521c390c4d7bff254eafbe7712441292 (diff)
platform/x86: dell-smo8800: Move instantiation of lis3lv02d i2c_client from i2c-i801 to dell-lis3lv02d
Various Dell laptops have an lis3lv02d freefall/accelerometer sensor. The lis3lv02d chip has an interrupt line as well as an I2C connection to the system's main SMBus. The lis3lv02d is described in the ACPI tables by an SMO88xx ACPI device, but the SMO88xx ACPI fwnodes are incomplete and only list an IRQ resource. So far this has been worked around with some SMO88xx specific quirk code in the generic i2c-i801 driver, but it is not necessary to handle the Dell specific instantiation of i2c_client-s for SMO88xx ACPI devices there. The kernel already instantiates platform_device-s for these with an acpi:SMO88xx modalias. The drivers/platform/x86/dell/dell-smo8800.c driver binds to this platform device but this only deals with the interrupt resource. Add a drivers/platform/x86/dell/dell-lis3lv02d.c which will matches on the same acpi:SMO88xx modaliases and move the i2c_client instantiation from the generic i2c-i801 driver there. Moving the i2c_client instantiation has the following advantages: 1. This moves the SMO88xx ACPI device quirk handling away from the generic i2c-i801 module which is loaded on all Intel x86 machines to a module which will only be loaded when there is an ACPI SMO88xx device. 2. This removes the duplication of the SMO88xx ACPI Hardware ID (HID) table between the i2c-i801 and dell-smo8800 drivers. 3. This allows extending the quirk handling by adding new code and related module parameters to the dell-lis3lv02d driver, without needing to modify the i2c-i801 code. Reviewed-by: Pali Rohár <pali@kernel.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Wolfram Sang <wsa@kernel.org> Link: https://lore.kernel.org/r/20241209183557.7560-3-hdegoede@redhat.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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