linux-kernel - Re: [PATCH v3 07/11] usb: otg: add OTG core

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Message-ID: <20150814084318.GF11072@shlinux2>
Date:	Fri, 14 Aug 2015 16:43:19 +0800
From:	Peter Chen <peter.chen@...escale.com>
To:	Roger Quadros <rogerq@...com>
CC:	<stern@...land.harvard.edu>, <balbi@...com>,
	<gregkh@...uxfoundation.org>, <dan.j.williams@...el.com>,
	<jun.li@...escale.com>, <mathias.nyman@...ux.intel.com>,
	<tony@...mide.com>, <Joao.Pinto@...opsys.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>
Subject: Re: [PATCH v3 07/11] usb: otg: add OTG core

On Fri, Aug 14, 2015 at 12:42:38PM +0300, Roger Quadros wrote:
> Hi Peter,
> 
> On 13/07/15 13:20, Roger Quadros wrote:
> > On 13/07/15 05:14, Peter Chen wrote:
> >> On Wed, Jul 08, 2015 at 01:19:33PM +0300, Roger Quadros wrote:
> >>> The OTG core instantiates the OTG Finite State Machine
> >>> per OTG controller and manages starting/stopping the
> >>> host and gadget controllers based on the bus state.
> >>>
> >>> It provides APIs for the following tasks
> >>>
> >>> - Registering an OTG capable controller
> >>> - Registering Host and Gadget controllers to OTG core
> >>> - Providing inputs to and kicking the OTG state machine
> >>>
> >>> Signed-off-by: Roger Quadros <rogerq@...com>
> >>> ---
> >>>  MAINTAINERS                  |   4 +-
> >>>  drivers/usb/Kconfig          |   2 +-
> >>>  drivers/usb/Makefile         |   1 +
> >>>  drivers/usb/common/Makefile  |   3 +-
> >>>  drivers/usb/common/usb-otg.c | 768 +++++++++++++++++++++++++++++++++++++++++++
> >>>  drivers/usb/common/usb-otg.h |  71 ++++
> >>>  drivers/usb/core/Kconfig     |  11 +-
> >>>  include/linux/usb/otg.h      |  91 ++++-
> >>>  8 files changed, 930 insertions(+), 21 deletions(-)
> >>>  create mode 100644 drivers/usb/common/usb-otg.c
> >>>  create mode 100644 drivers/usb/common/usb-otg.h
> >>>
> >>> diff --git a/MAINTAINERS b/MAINTAINERS
> >>> index 8133cef..b21278e 100644
> >>> --- a/MAINTAINERS
> >>> +++ b/MAINTAINERS
> >>> @@ -10640,12 +10640,14 @@ S:	Maintained
> >>>  F:	Documentation/usb/ohci.txt
> >>>  F:	drivers/usb/host/ohci*
> >>>  
> >>> -USB OTG FSM (Finite State Machine)
> >>> +USB OTG/DRD core and FSM (Finite State Machine)
> >>>  M:	Peter Chen <Peter.Chen@...escale.com>
> >>> +M:	Roger Quadros <rogerq@...com>
> >>>  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
> >>>  L:	linux-usb@...r.kernel.org
> >>>  S:	Maintained
> >>>  F:	drivers/usb/common/usb-otg-fsm.c
> >>> +F:	drivers/usb/common/usb-otg.c
> >>>  
> >>>  USB OVER IP DRIVER
> >>>  M:	Valentina Manea <valentina.manea.m@...il.com>
> >>> diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
> >>> index 8ed451d..5b625e2 100644
> >>> --- a/drivers/usb/Kconfig
> >>> +++ b/drivers/usb/Kconfig
> >>> @@ -32,7 +32,7 @@ if USB_SUPPORT
> >>>  config USB_COMMON
> >>>  	tristate
> >>>  	default y
> >>> -	depends on USB || USB_GADGET
> >>> +	depends on USB || USB_GADGET || USB_OTG
> >>>  
> >>
> >> USB_OTG can depends on USB || UB_GADGET?
> > 
> > I didn't understand. The above is for USB_COMMON.
> > 
> >>
> >>>  config USB_ARCH_HAS_HCD
> >>>  	def_bool y
> >>> diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
> >>> index d8926c6..769d13b 100644
> >>> --- a/drivers/usb/Makefile
> >>> +++ b/drivers/usb/Makefile
> >>> @@ -60,5 +60,6 @@ obj-$(CONFIG_USB_RENESAS_USBHS)	+= renesas_usbhs/
> >>>  obj-$(CONFIG_USB_GADGET)	+= gadget/
> >>>  
> >>>  obj-$(CONFIG_USB_COMMON)	+= common/
> >>> +obj-$(CONFIG_USB_OTG)		+= common/
> >>>  
> >>
> >> The comment like above.
> > 
> > What should it look like?
> > 
> 
> Can you please clarify what you meant at the above two
> comments? Thanks.
> 

Forget them, I had thought the USB_OTG could be module.

-- 

Best Regards,
Peter Chen
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