linux-kernel - Re: [PATCH v9 12/14] usb: hcd: Adapt to OTG core

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Date:	Wed, 8 Jun 2016 14:42:32 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Roger Quadros <rogerq@...com>, peter.chen@...escale.com
Cc:	balbi@...nel.org, tony@...mide.com, gregkh@...uxfoundation.org,
	dan.j.williams@...el.com, mathias.nyman@...ux.intel.com,
	Joao.Pinto@...opsys.com, jun.li@...escale.com,
	grygorii.strashko@...com, yoshihiro.shimoda.uh@...esas.com,
	robh@...nel.org, nsekhar@...com, b-liu@...com,
	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v9 12/14] usb: hcd: Adapt to OTG core

On 6/8/2016 12:03 PM, Roger Quadros wrote:

> Introduce usb_otg_add/remove_hcd() for use by host
> controllers that are part of OTG/dual-role port.
>
> Non Device tree platforms can use the otg_dev argument
> to specify the OTG controller device. If otg_dev is NULL
> then the device tree node's otg-controller property is used to
> get the otg_dev device.
>
> Signed-off-by: Roger Quadros <rogerq@...com>
> Acked-by: Peter Chen <peter.chen@....com>
> ---
>  drivers/usb/core/hcd.c  | 55 +++++++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/usb/hcd.h |  4 ++++
>  2 files changed, 59 insertions(+)
>
> diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
> index ae6c76d..c6f4155 100644
> --- a/drivers/usb/core/hcd.c
> +++ b/drivers/usb/core/hcd.c
[...]
> @@ -3025,6 +3030,56 @@ void usb_remove_hcd(struct usb_hcd *hcd)
>  }
>  EXPORT_SYMBOL_GPL(usb_remove_hcd);
>
> +static struct otg_hcd_ops otg_hcd_intf = {
> +	.add = usb_add_hcd,
> +	.remove = usb_remove_hcd,
> +	.usb_bus_start_enum = usb_bus_start_enum,
> +	.usb_control_msg = usb_control_msg,
> +	.usb_hub_find_child = usb_hub_find_child,
> +};
> +
> +/**
> + * usb_otg_add_hcd - Register the HCD with OTG core.
> + * @hcd: the usb_hcd structure to initialize
> + * @irqnum: Interrupt line to allocate
> + * @irqflags: Interrupt type flags
> + * @otg_dev: OTG controller device managing this HCD

    Device managing a driver? That's interesting. :-)

[...]

MBR, Sergei