[RFC PATCH 00/11 V4] MXS: Add i.MX28 USB Host driver

[Chen Peter-B29397]

> This patchset introduces the USB Host driver for i.MX28 CPU, utilising
> the
> generic USB PHY infrastructure. Also added is glue code for CI13xxx
> driver, to
> allow device mode. This patchset still does NOT support OTG mode, the
> device/host mode is selected via platform data.
> 
Does the udc work at this patchset? If it is, you have enabled OTG port
and not host 1 port, correct?
 

> V2: Introduce stub imx-usb driver that then registers the PHY and EHCI
> drivers.
> V3: Add the HCD on demand based on the PHY's state (only add HCD if it's
> host).
>     Currently, only the HOST mode is supported.
> V4: * Introduce ci13xxx gadget glue
>     * Reorder patches in a more sensible order
>     * Introduce platform data, containing VBUS GPIO and port mode
> (device/gadget)
>     * Rename imx-usb to imx-otg
>     * Drop mx28evk usb host patch
>     * Use more devm_ function
>     * Rework the mxs-phy to register the same interrupt as ehci-mxs (and
>       effectivelly kill bogus otg_set_vbus() call from ehci-mxs ; use
> standard
>       ehci irq handling in ehci-mxs)
> 
> Marek Vasut (11):
>   MXS: Make clk_disable return integer
>   MXS: Add USB EHCI and USB PHY clock handling
>   MXS: Fixup i.MX233 USB base address name
>   MXS: Add data shared between imx-otg and EHCI driver
>   MXS: Modify the ci13xxx_udc to avoid adding UDC
>   MXS: Add small registration glue for ci13xxx_udc
>   MXS: Add separate MXS EHCI HCD driver
>   MXS: Add imx-otg driver
>   MXS: Add USB PHY driver
>   MXS: Add platform registration hooks for USB EHCI
>   MXS: Enable USB on M28EVK
> 
>  arch/arm/mach-mxs/Kconfig                       |    2 +
>  arch/arm/mach-mxs/clock-mx28.c                  |   28 +-
>  arch/arm/mach-mxs/devices-mx28.h                |    5 +
>  arch/arm/mach-mxs/devices/Kconfig               |    3 +
>  arch/arm/mach-mxs/devices/Makefile              |    1 +
>  arch/arm/mach-mxs/devices/platform-usb.c        |   84 +++++
>  arch/arm/mach-mxs/include/mach/clock.h          |    2 +-
>  arch/arm/mach-mxs/include/mach/devices-common.h |   12 +
>  arch/arm/mach-mxs/include/mach/mx23.h           |    8 +-
>  arch/arm/mach-mxs/mach-m28evk.c                 |   20 ++
>  drivers/usb/gadget/Kconfig                      |   17 +
>  drivers/usb/gadget/Makefile                     |    1 +
>  drivers/usb/gadget/ci13xxx_mxs.c                |   67 ++++
>  drivers/usb/gadget/ci13xxx_udc.c                |   12 +-
>  drivers/usb/gadget/ci13xxx_udc.h                |    1 +
>  drivers/usb/host/Kconfig                        |    7 +
>  drivers/usb/host/ehci-hcd.c                     |    5 +
>  drivers/usb/host/ehci-mxs.c                     |  197 ++++++++++
>  drivers/usb/otg/Kconfig                         |   16 +
>  drivers/usb/otg/Makefile                        |    2 +
>  drivers/usb/otg/imx-otg.c                       |  282 +++++++++++++++
>  drivers/usb/otg/mxs-phy.c                       |  438
> +++++++++++++++++++++++
>  include/linux/fsl/mxs-usb.h                     |   46 +++
>  23 files changed, 1243 insertions(+), 13 deletions(-)
>  create mode 100644 arch/arm/mach-mxs/devices/platform-usb.c
>  create mode 100644 drivers/usb/gadget/ci13xxx_mxs.c
>  create mode 100644 drivers/usb/host/ehci-mxs.c
>  create mode 100644 drivers/usb/otg/imx-otg.c
>  create mode 100644 drivers/usb/otg/mxs-phy.c
>  create mode 100644 include/linux/fsl/mxs-usb.h
> 
> Cc: Chen Peter-B29397 <B29397 at freescale.com>
> Cc: Detlev Zundel <dzu at denx.de>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Li Frank-B20596 <B20596 at freescale.com>
> Cc: Lin Tony-B19295 <B19295 at freescale.com>
> Cc: Linux USB <linux-usb at vger.kernel.org>
> Cc: Sascha Hauer <s.hauer at pengutronix.de>
> Cc: Shawn Guo <shawn.guo at freescale.com>
> Cc: Shawn Guo <shawn.guo at linaro.org>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Subodh Nijsure <snijsure at grid-net.com>
> Cc: Tony Lin <tony.lin at freescale.com>
> Cc: Wolfgang Denk <wd at denx.de>
> 
> NOTE: Adding this ci13xxx-mxs driver was really helpful, it helped me to
> realise
>       how this whole monster should look like in the end. Now the mxs-phy
> is
>       also much more prepared for the OTG operation.
> 
> --
> 1.7.9.5
>