From: Jun Li <jun.li@nxp.com>
To: Roger Quadros <rogerq@ti.com>, Peter Chen <hzpeterchen@gmail.com>
Cc: "peter.chen@freescale.com" <peter.chen@freescale.com>,
"balbi@kernel.org" <balbi@kernel.org>,
"tony@atomide.com" <tony@atomide.com>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"dan.j.williams@intel.com" <dan.j.williams@intel.com>,
"mathias.nyman@linux.intel.com" <mathias.nyman@linux.intel.com>,
"Joao.Pinto@synopsys.com" <Joao.Pinto@synopsys.com>,
"sergei.shtylyov@cogentembedded.com"
<sergei.shtylyov@cogentembedded.com>,
"jun.li@freescale.com" <jun.li@freescale.com>,
"grygorii.strashko@ti.com" <grygorii.strashko@ti.com>,
"yoshihiro.shimoda.uh@renesas.com"
<yoshihiro.shimoda.uh@renesas.com>,
"robh@kernel.org" <robh@kernel.org>,
"nsekhar@ti.com" <nsekhar@ti.com>, "b-liu@ti.com" <b-liu@ti.com>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: RE: [PATCH v8 08/14] usb: otg: add OTG/dual-role core
Date: Wed, 25 May 2016 14:44:32 +0000 [thread overview]
Message-ID: <AM4PR04MB213028144706EC69A066EAEE89400@AM4PR04MB2130.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <574598D3.5090405@ti.com>
Hi Roger
> >>
> >> Here, we should be checking if user needs to disable any OTG
> >> features. So,
> >>
> >> if (dev->of_node)
> >> of_usb_update_otg_caps(dev->of_node, &otg->caps);
> >>
> >> Do you agree?
> >> This means we need to change otg->caps from 'struct usb_otg_caps
> *caps;'
> >> to 'struct usb_otg_caps caps;' so that we can modify the local copy
> >> instead of the one passed by the OTG controller.
> >
> > Why can't modify the one from OTG controller directly?
> >
>
> There are 2 things.
> 1) OTG features supported by hardware. This is the controller's config-
> >otg_caps
> 2) OTG features needed by system designer. This can be a subset of (1).
Let's make things simple, we only need this subnet, which can be set
by controller driver in config->otg_caps before pass (its address)
to OTG core.
So controller driver should get the capability of HW(+SW) and user config
by whatever approach, then set its config->otg_caps.
Li Jun
next prev parent reply other threads:[~2016-05-25 14:44 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-13 10:03 [PATCH v8 00/14] USB OTG/dual-role framework Roger Quadros
2016-05-13 10:03 ` [PATCH v8 01/14] usb: hcd: Initialize hcd->flags to 0 Roger Quadros
2016-05-13 10:03 ` [PATCH v8 02/14] usb: otg-fsm: Prevent build warning "VDBG" redefined Roger Quadros
2016-05-13 10:03 ` [PATCH v8 03/14] usb: hcd.h: Add OTG to HCD interface Roger Quadros
2016-05-13 10:03 ` [PATCH v8 04/14] usb: otg-fsm: use usb_otg wherever possible Roger Quadros
2016-05-13 10:03 ` [PATCH v8 05/14] usb: otg-fsm: move host controller operations into usb_otg->hcd_ops Roger Quadros
2016-05-13 10:03 ` [PATCH v8 06/14] usb: gadget.h: Add OTG to gadget interface Roger Quadros
2016-05-13 10:03 ` [PATCH v8 07/14] usb: otg: get rid of CONFIG_USB_OTG_FSM in favour of CONFIG_USB_OTG Roger Quadros
2016-05-13 10:03 ` [PATCH v8 08/14] usb: otg: add OTG/dual-role core Roger Quadros
2016-05-16 9:00 ` Roger Quadros
[not found] ` <CAL411-qb0dHQrn+AarSApCq6L=toKPRerLKDcx_H+5WDWu_VDg@mail.gmail.com>
2016-05-18 12:59 ` Roger Quadros
2016-05-20 8:31 ` Roger Quadros
2016-05-20 9:19 ` Roger Quadros
2016-05-20 9:53 ` Peter Chen
2016-05-23 10:06 ` Roger Quadros
2016-05-24 9:45 ` Roger Quadros
2016-05-25 2:44 ` Peter Chen
2016-05-25 3:19 ` Jun Li
2016-05-25 12:26 ` Roger Quadros
2016-05-25 12:21 ` Roger Quadros
2016-05-25 14:44 ` Jun Li [this message]
2016-05-13 10:03 ` [PATCH v8 09/14] usb: of: add an API to get OTG device from USB controller node Roger Quadros
2016-05-20 9:29 ` [PATCH v9 " Roger Quadros
2016-05-23 21:06 ` Rob Herring
2016-05-13 10:03 ` [PATCH v8 10/14] usb: otg: add hcd companion support Roger Quadros
2016-05-13 18:13 ` Rob Herring
2016-05-16 8:12 ` Roger Quadros
2016-05-20 9:32 ` [PATCH v9 " Roger Quadros
2016-05-23 21:07 ` Rob Herring
2016-05-13 10:03 ` [PATCH v8 11/14] usb: otg: use dev_dbg() instead of VDBG() Roger Quadros
2016-05-13 10:03 ` [PATCH v8 12/14] usb: hcd: Adapt to OTG core Roger Quadros
2016-05-13 10:03 ` [PATCH v8 13/14] usb: gadget: udc: adapt " Roger Quadros
2016-05-16 7:02 ` Peter Chen
2016-05-16 8:26 ` Roger Quadros
2016-05-16 9:23 ` Peter Chen
2016-05-16 9:51 ` Roger Quadros
2016-05-17 7:38 ` Jun Li
2016-05-17 8:08 ` Roger Quadros
2016-05-17 8:28 ` Jun Li
2016-05-18 12:42 ` Roger Quadros
2016-05-18 13:12 ` Jun Li
2016-05-18 13:43 ` Roger Quadros
2016-05-18 14:46 ` Jun Li
2016-05-19 7:32 ` Roger Quadros
2016-05-21 2:29 ` Peter Chen
2016-05-23 3:21 ` Peter Chen
2016-05-23 10:11 ` Roger Quadros
2016-05-23 10:34 ` Jun Li
2016-05-23 10:36 ` Roger Quadros
2016-05-24 2:53 ` Peter Chen
2016-06-08 7:32 ` Roger Quadros
2016-06-08 9:05 ` Peter Chen
2016-05-18 3:18 ` Peter Chen
2016-05-18 12:45 ` Roger Quadros
2016-05-20 1:39 ` Peter Chen
2016-05-20 7:26 ` Roger Quadros
2016-05-21 2:44 ` Peter Chen
2016-06-01 7:38 ` Peter Chen
2016-06-02 11:07 ` Roger Quadros
2016-05-13 10:03 ` [PATCH v8 14/14] usb: host: xhci-plat: Add otg device to platform data Roger Quadros
2016-05-30 9:29 ` [PATCH v8 00/14] USB OTG/dual-role framework Peter Chen
2016-05-30 14:04 ` Roger Quadros
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