These patches introduce the SSUSB and SPM glue layer driver which is
used to support usb remote wakeup. Usually the glue layer is put into
a system controller, such as PERICFG module.
The old way to support usb wakeup is put into SSUSB controller drivers,
including xhci-mtk driver and mtu3 driver, but there are some problems:
1. can't disdinguish the relation between glue layer and SSUSB IP
when SoCs supports multi SSUSB IPs;
2. duplicated code for wakeup are put into both xhci-mtk and mtu3
drivers;
3. the glue layer may vary on different SoCs with SSUSB IP, and will
make SSUSB controller drivers complicated;
In order to resolve these problems, it's useful to make the glue layer
transparent by extracting a seperated driver, meanwhile to reduce the
duplicated code and simplify SSUSB controller drivers.
Changes from v1:
* Introduce USB remote wakeup driver
* Use the new way to support remote wakeup for SSUSB controller drivers
* Add binding document for USB remote wakeup driver
* Update binding documents of SSUSB controller drivers
* Update DTS of MT8173 platform
Chunfeng Yun (7):
soc: mediatek: Add USB wakeup driver
dt-bindings: soc: mediatek: add bindings document for USB wakeup
usb: xhci-mtk: use APIs of mtu_wakeup to support remote wakeup
usb: mtu3: use APIs of mtu_wakeup to support remote wakeup
dt-bindings: usb: mtk-xhci: add USB wakeup properties
dt-bindings: usb: mtu3: add USB wakeup properties
arm64: dts: mt8173: add uwk node and remove unused usb property
.../bindings/soc/mediatek/usb-wakeup.txt | 77 +++
.../devicetree/bindings/usb/mediatek,mtk-xhci.txt | 15 +-
.../devicetree/bindings/usb/mediatek,mtu3.txt | 14 +-
arch/arm64/boot/dts/mediatek/mt8173-evb.dts | 28 +-
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 16 +-
drivers/soc/mediatek/Kconfig | 8 +
drivers/soc/mediatek/Makefile | 1 +
drivers/soc/mediatek/mtk-usb-wakeup.c | 519 +++++++++++++++++++++
drivers/usb/host/xhci-mtk.c | 39 +-
drivers/usb/host/xhci-mtk.h | 2 +
drivers/usb/mtu3/mtu3.h | 2 +
drivers/usb/mtu3/mtu3_host.c | 39 +-
include/dt-bindings/soc/mediatek,usb-wakeup.h | 15 +
include/linux/soc/mediatek/usb-wakeup.h | 88 ++++
14 files changed, 803 insertions(+), 60 deletions(-)
create mode 100644 Documentation/devicetree/bindings/soc/mediatek/usb-wakeup.txt
create mode 100644 drivers/soc/mediatek/mtk-usb-wakeup.c
create mode 100644 include/dt-bindings/soc/mediatek,usb-wakeup.h
create mode 100644 include/linux/soc/mediatek/usb-wakeup.h
--
1.9.1
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