[v7,0/6] Add MediaTek MUSB Controller Driver

Message

Min Guo Aug. 30, 2019, 8:20 a.m. UTC

From: Min Guo <[e-mail]>

These patches introduce the MediaTek MUSB controller driver.

The driver can be configured as Dual-Role Device (DRD),
Peripheral Only and Host Only modes. This has beed tested on
MT2701 with a variety of devices in host mode and with the 
f_mass gadget driver in peripheral mode, plugging otg cables
in/out a lot of times in all possible imaginable plug orders.

changes in v7:
changes of dt-bindings and DTS:
1. Change compatible string
2. Change usb connector child node compatible as "gpio-usb-b-connector" 

changes in v6:
changes of dt-bindings:
1. Modify usb connector child node
changes of DTS:
1. Modify usb connector child node
changes of driver:
1. Add of_platform_populate in probe to populate connector platform_devices
   from device tree data
2. Replace extcon with usb role switch mechanism to support dual-role mode,
   depends on [1]
3. Remove set vbus function

    [1] [v6,09/10] usb: roles: add USB Type-B GPIO connector driver
        https://patchwork.kernel.org/patch/10966361/

changes in v5:
changes of dt-bindings suggested by Rob:
1. Modify compatible as 
- compatible : should be one of:
               "mediatek,mt-2701"
               ...
               followed by "mediatek,mtk-musb"
2. Add usb connector child node
changes of DTS:
1. Add usb connector child node
changes of driver suggested by Bin:
1. Replace musb_readb() with musb_clearb() to clear dma pending interrupts
2. Replace musb_readb() with musb_clearb() to clear common/tx/rx pending interrupts
3. Make musb_clearb/w() return the value of musb_readb/w()

changes in v4:
changes of dt-bindings suggested by Sergei:
1. String alignment
changes of driver suggested by Tony and Bin:
1. Add a new patch for set/get_toggle()
2. Add a new patch for noirq type of dma
3. Add a new patch musb_clearb/w()
4. Abondon patch "usb: musb: Delete the const attribute of addr parameter in readb/w/l hooks"

changes in v3:
changes of driver suggested by Bin:
1. Add a new patch for musb_readb/w/l() to remove const attribute 
2. Use is_out as function parameter in set_toggle/get_toggle() hooks
3. Remove 'u8/u16 data' parameter in clearb/w() hooks
4. Remove musb_default_clearb/w()
5. Replace musb_readb/w() with musb_clearb/w() to clear pending interrupts 
6. Add comments to clearb/w() hooks
7. Replace musb_save_toggle() with musb->io.get_toggle()
8. Replace musb_set_toggle() with musb->io.set_toggle()

changes in v2:
changes of dt-bindings suggested by Rob and Bin:
1. Modify DRC to DRD
2. Drop the "<soc-model>-musb" in compatible
3. Remove phy-names
4. Add space after comma in clock-names
dtsi:
1. Remove phy-names
changes of driver suggested by Bin:
1. Add a new patch for musb_set_toggle
2. Add summarize of MediaTek musb controller differences in the commit log
3. Abondon patch "usb: musb: Move musbhsdma macro definition to musb_dma.h"
4. Add "|| COMPILE_TEST" in Kconfig
5. Add musb_clearb() and musb_clearw() hooks
6. Add get_toggle() and set_toggle() hooks
7. Replace musb_readl() with musb_readw() to read 16bit toggle register
8. Move MediaTek's private toggle registers from musb_regs.h to mediatek.c
9. Create musbhs_dma_controller_create_noirq()

Min Guo (6):
  dt-bindings: usb: musb: Add support for MediaTek musb controller
  arm: dts: mt2701: Add usb2 device nodes
  usb: musb: Add get/set toggle hooks
  usb: musb: Add noirq type of dma create interface
  usb: musb: Add musb_clearb/w() interface
  usb: musb: Add support for MediaTek musb controller

 .../devicetree/bindings/usb/mediatek,musb.txt      |  55 ++
 arch/arm/boot/dts/mt2701-evb.dts                   |  21 +
 arch/arm/boot/dts/mt2701.dtsi                      |  33 ++
 drivers/usb/musb/Kconfig                           |   9 +-
 drivers/usb/musb/Makefile                          |   1 +
 drivers/usb/musb/mediatek.c                        | 582 +++++++++++++++++++++
 drivers/usb/musb/musb_core.c                       |  74 ++-
 drivers/usb/musb/musb_core.h                       |  13 +-
 drivers/usb/musb/musb_dma.h                        |   9 +
 drivers/usb/musb/musb_host.c                       |  46 +-
 drivers/usb/musb/musb_io.h                         |  12 +-
 drivers/usb/musb/musbhsdma.c                       |  56 +-
 drivers/usb/musb/sunxi.c                           |   4 +-
 drivers/usb/musb/tusb6010.c                        |   2 +-
 14 files changed, 845 insertions(+), 72 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/mediatek,musb.txt
 create mode 100644 drivers/usb/musb/mediatek.c