This patch series introduce ACPI support for non-PCI AHCI platform driver.
Existing ACPI support for AHCI assumes the device controller is a PCI device.
Also, since there is no ACPI _HID/_CID for generic AHCI controller, the driver
could not use them for matching devices. Therefore, this patch introduces
a mechanism for drivers to match devices using ACPI _CLS method.
This patch series is rebased from and tested with:
http://git.linaro.org/leg/acpi/acpi.git acpi-5.1-v7
This topic was discussed earlier here (as part of introducing support for
AMD Seattle SATA controller):
http://marc.info/?l=linux-arm-kernel&m=141083492521584&w=2
NOTE:
* PATCH 2/2 has already been Acked-by Tejun Heo in V1. I only made
a minor renaming of the acpi_cls to acpi_match_cls for clarity
in V2. It probably should be routed together with the PATCH 1/2
(once acked) since it defines the new member in the struct.
Changes V1 (https://lkml.org/lkml/2014/12/19/345)
* Rebased to 3.19.0-rc2
* Change from acpi_cls in device_driver to acpi_match_cls (Hanjun comment)
* Change the matching logic in acpi_driver_match_device() due to the new
special PRP0001 _HID.
* Simplify the return type of acpi_match_device_cls() to boolean.
Changes from RFC (https://lkml.org/lkml/2014/12/17/446)
* Remove #ifdef and make non-ACPI version of the acpi_match_device_cls
as inline. (per Arnd)
* Simplify logic to retrieve and evaluate _CLS handle. (per Hanjun)
Suravee Suthikulpanit (2):
ACPI / scan: Add support for ACPI _CLS device matching
ata: ahci_platform: Add ACPI _CLS matching
drivers/acpi/scan.c | 79 +++++++++++++++++++++++++++++++++++++++--
drivers/ata/Kconfig | 2 +-
drivers/ata/ahci_platform.c | 3 ++
include/acpi/acnames.h | 1 +
include/linux/acpi.h | 10 ++++++
include/linux/device.h | 1 +
include/linux/mod_devicetable.h | 6 ++++
7 files changed, 98 insertions(+), 4 deletions(-)
--
1.9.3
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