linux-kernel - Re: [PATCH v4 2/2] usb: dwc2: add 'mode' which based on Kconfig select or dts setting

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Message-ID: <CAD=FV=VG4qqXTPe1ZYZ56KDrntiZiU20Ne8Ng9BqtyER0vt1Og@mail.gmail.com>
Date:	Wed, 6 Aug 2014 20:34:07 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Kever Yang <kever.yang@...k-chips.com>
Cc:	Paul Zimmerman <paulz@...opsys.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Addy Ke <addy.ke@...k-chips.com>,
	Eddie Cai <cf@...k-chips.com>, Jianqun Xu <xjq@...k-chips.com>,
	Olof Johansson <olof@...om.net>,
	Sonny Rao <sonnyrao@...omium.org>, wulf <wulf@...k-chips.com>,
	lyz <lyz@...k-chips.com>, Jingoo Han <jg1.han@...sung.com>,
	han jiang <hj@...k-chips.com>,
	Tao Huang <huangtao@...k-chips.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 2/2] usb: dwc2: add 'mode' which based on Kconfig
 select or dts setting

Kever,

On Tue, Aug 5, 2014 at 6:01 PM, Kever Yang <kever.yang@...k-chips.com> wrote:
> According to the "dr_mode", the otg controller can work as
> device role and host role. Some boards always want to use host mode
> and some other boards want to use gadget mode. We use the dts setting
> to set dwc2's mode, rather than fixing it to whatever hardware says.
>
> Signed-off-by: Kever Yang <kever.yang@...k-chips.com>
> Acked-by: Paul Zimmerman <paulz@...opsys.com>
> ---
>
> Changes in v4:
> - From Doug's suggestion:
>  -- remove dr_mode init from Kconfig code
>  -- change the commit meesage
>
> Changes in v3:
> - fix the odd spacing in dwc2_hsotg struct
> - From Jingoo's suggestion:
>     change the commit message
> - add dr_mode init from Kconfig
>
> Changes in v2:
> - put spaces around '+' operator
> - expand the comment for dr_mode
> - handle dr_mode is USB_DR_MODE_OTG
>
>  drivers/usb/dwc2/core.c     | 18 ++++++++++++++++++
>  drivers/usb/dwc2/core.h     |  5 +++++
>  drivers/usb/dwc2/platform.c |  4 ++++
>  3 files changed, 27 insertions(+)

I don't know the driver well enough to feel like I can add my
Reviewed-by tag, but since you've already got an Ack from Paul it
doesn't matter much.  ...FWIW I'm happy with the current state of the
code now.  :)

-Doug
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