[V3 PATCH 0/2] Introduce ACPI support for ahci_platform driver

[Suravee Suthikulpanit]

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-v8

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

Changes from V2 (https://lkml.org/lkml/2015/1/5/662)
	* Update with review comment from Rafael in patch 1/2
	* Rebased and tested with acpi-5.1-v8

Changes from 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             | 75 +++++++++++++++++++++++++++++++++++++++--
 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, 94 insertions(+), 4 deletions(-)

-- 
2.1.0

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