Retrieve device properties on Macs with an Apple-specific _DSM and use them in lieu of _CRS data upon SPI slave initialization, v3. Please refer to the cover letters of v1 and v2 for further details: http://www.spinics.net/lists/linux-acpi/msg75537.html http://www.spinics.net/lists/linux-acpi/msg75735.html Special thanks to Ronald Tschalär for patient testing/debugging and Andy Shevchenko for equally patient reviewing on GitHub. Changes v2 -> v3: Patch 1 + 2: - Newly inserted patches in v3 to avoid repeated DMI checks for Apple hardware: The result of the first DMI check in osi.c is cached. Two other existing DMI checks are converted to use the result. Because one of them is in a module (sbs.ko), the bool is_apple_system needs to be exported. On non-x86, the DMI checks and Apple-specific code are omitted altogether. (Andy, Rafael) Patch 4: - Use bitmap to keep track of valid properties. Move to x86/apple.c to avoid cluttering up generic ACPI code. (Andy, Rafael) Patch 5: - Use fwnode_property_present() instead of device_property_present(), the latter doesn't work as the fwnode pointer of the struct device embedded in a struct acpi_device is always NULL. (Ronald) Patch 6: - Check buffer length for extra safety. Rename "o" to "obj", use 32 bit division to calculate max_speed_hz. (Andy) Thanks, Lukas Lukas Wunner (6): ACPI / osi: Exclude x86 DMI quirks on other arches ACPI / x86: Consolidate Apple DMI checks ACPI / property: Don't evaluate objects for devices w/o handle ACPI / property: Support Apple _DSM properties ACPI / scan: Recognize Apple SPI and I2C slaves spi: Use Apple device properties in absence of ACPI resources drivers/acpi/Makefile | 1 + drivers/acpi/internal.h | 6 +++ drivers/acpi/osi.c | 8 +++ drivers/acpi/pci_root.c | 3 +- drivers/acpi/property.c | 6 +++ drivers/acpi/sbs.c | 24 +-------- drivers/acpi/scan.c | 6 +++ drivers/acpi/x86/apple.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/spi/spi.c | 31 +++++++++++ include/linux/acpi.h | 6 +++ 10 files changed, 203 insertions(+), 25 deletions(-) create mode 100644 drivers/acpi/x86/apple.c -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
