Everyone:
This series adds ACPI support for the Designware SPI MMIO-based
controller. The Hisilicon Hip08 platform, that uses ACPI, has this
controller. However, the spi-dw-mmio driver only supports Device
Tree now.
ACPI also supports function names for GPIOs in a similar fashion to DT.
A example from ACPI which uses cs-gpios:
Device(SPI0)
{
Name(_HID, ...)
Name (RBUF, ResourceTemplate () {
GpioIo(Exclusive, PullUp, 0, 0, IoRestrictionNone,
"\\_SB.GPO1", 0, ResourceConsumer, , ) { 6 }
})
Method (_CRS, 0, NotSerialized) {
Return (RBUF)
}
Name(_DSD, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"num-cs", 1},
Package () {
"cs-gpios",
Package () {
^SPI0, 0, 0, 0,
},
},
}
})
}
[1] https://www.kernel.org/doc/Documentation/acpi/gpio-properties.txt
Thank you,
Jay
Jay Fang (3):
ACPI / APD: Add clock frequency for Hisilicon Hip08 SPI controller
spi: dw-mmio: add ACPI support
spi: add ACPI support for SPI controller chip select lines(cs-gpios)
drivers/acpi/acpi_apd.c | 6 ++++++
drivers/spi/spi-dw-mmio.c | 8 ++++++++
drivers/spi/spi-dw.c | 1 +
drivers/spi/spi.c | 32 ++++++++++++++++----------------
4 files changed, 31 insertions(+), 16 deletions(-)
--
2.7.4
