UBUNTU: SAUCE: HISI LPC: Add ACPI support
BugLink: https://bugs.launchpad.net/bugs/1677319
Based on the previous patches, this patch supports the
LPC host on hip06/hip07 for ACPI FW.
It is the responsibility of the LPC host driver to
enumerate the child devices, as the ACPI scan code will
not enumerate children of "indirect IO" hosts.
The ACPI table for the LPC host controller and the child
devices is in the following format:
Device (LPC0) {
Name (_HID, "HISI0191") // HiSi LPC
Name (_CRS, ResourceTemplate () {
Memory32Fixed (ReadWrite, 0xa01b0000, 0x1000)
})
}
Device (LPC0.IPMI) {
Name (_HID, "IPI0001")
Name (LORS, ResourceTemplate() {
QWordIO (
ResourceConsumer,
MinNotFixed, // _MIF
MaxNotFixed, // _MAF
PosDecode,
EntireRange,
0x0, // _GRA
0xe4, // _MIN
0x3fff, // _MAX
0x0, // _TRA
0x04, // _LEN
, ,
BTIO
)
})
Since the IO resources of the child devices need to be
translated from LPC bus addresses to logical PIO addresses,
and we shouldn't modify the resources of the devices
generated in the FW scan, a per-child MFD is created as
a substitute. The MFD IO resources will be the translated
bus addresses of the ACPI child.
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Zhichang Yuan <yuanzhichang@hisilicon.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
[ v14 submittal ]
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>