From: Roger Quadros <rogerq@ti.com>
To: Peter Chen <hzpeterchen@gmail.com>
Cc: <stern@rowland.harvard.edu>, <balbi@kernel.org>,
<gregkh@linuxfoundation.org>, <peter.chen@freescale.com>,
<dan.j.williams@intel.com>, <jun.li@freescale.com>,
<mathias.nyman@linux.intel.com>, <tony@atomide.com>,
<Joao.Pinto@synopsys.com>, <abrestic@chromium.org>,
<r.baldyga@samsung.com>, <linux-usb@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>
Subject: Re: [PATCH v6 08/12] usb: hcd: Adapt to OTG core
Date: Wed, 20 Apr 2016 09:46:54 +0300 [thread overview]
Message-ID: <571725DE.3020402@ti.com> (raw)
In-Reply-To: <20160418062937.GA4477@shlinux2.ap.freescale.net>
On 18/04/16 09:29, Peter Chen wrote:
> On Tue, Apr 05, 2016 at 05:05:13PM +0300, 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@ti.com>
>> ---
>> drivers/usb/core/hcd.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++
>> include/linux/usb/hcd.h | 4 +++
>> 2 files changed, 75 insertions(+)
>>
>> diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
>> index 6b1930d..6a80193 100644
>> --- a/drivers/usb/core/hcd.c
>> +++ b/drivers/usb/core/hcd.c
>> @@ -46,6 +46,10 @@
>> #include <linux/usb.h>
>> #include <linux/usb/hcd.h>
>> #include <linux/usb/phy.h>
>> +#include <linux/usb/otg.h>
>> +
>> +#include <linux/of.h>
>> +#include <linux/of_platform.h>
>>
>> #include "usb.h"
>>
>> @@ -3013,6 +3017,73 @@ 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 manging this HCD
>
> %s/manging/managing
OK.
>
>> + *
>> + * Registers the HCD with OTG core. OTG core will call usb_add_hcd()
>> + * or usb_remove_hcd() as necessary.
>> + * If otg_dev is NULL then device tree node is checked for OTG
>> + * controller device via the otg-controller property.
>> + */
>> +int usb_otg_add_hcd(struct usb_hcd *hcd,
>> + unsigned int irqnum, unsigned long irqflags,
>> + struct device *otg_dev)
>> +{
>
> Some users may not want to use default otg_hcd_ops, would you please
> add one more parameter (eg, hcd_ops) for that? If hcd_ops is NULL, just
> use the default one.
>
Can we please wait to add anything new till we have such users?
>> + struct device *dev = hcd->self.controller;
>> +
>> + if (!otg_dev) {
>> + struct device_node *np;
>> + struct platform_device *pdev;
>> +
>> + np = of_parse_phandle(dev->of_node, "otg-controller", 0);
>> + if (!np) {
>> + dev_err(dev,
>> + "otg_dev is NULL and no otg-controller property in DT\n");
>> + return -EINVAL;
>> + }
>> +
>> + pdev = of_find_device_by_node(np);
>> + of_node_put(np);
>> + if (!pdev) {
>> + dev_err(dev,
>> + "couldn't get otg-controller device\n");
>> + return -ENODEV;
>> + }
>> +
>> + hcd->otg_dev = &pdev->dev;
>> + } else {
>> + hcd->otg_dev = otg_dev;
>> + }
>> +
>> + return usb_otg_register_hcd(hcd, irqnum, irqflags, &otg_hcd_intf);
>> +}
>> +EXPORT_SYMBOL_GPL(usb_otg_add_hcd);
>> +
>
--
cheers,
-roger
next prev parent reply other threads:[~2016-04-20 6:47 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 14:05 [PATCH v6 00/12] USB OTG/dual-role framework Roger Quadros
2016-04-05 14:05 ` [PATCH v6 01/12] usb: hcd: Initialize hcd->flags to 0 Roger Quadros
2016-04-06 6:09 ` Felipe Balbi
2016-04-06 6:32 ` Roger Quadros
2016-04-07 9:42 ` Peter Chen
2016-04-07 10:40 ` Roger Quadros
2016-04-08 1:01 ` Peter Chen
2016-04-08 7:16 ` Roger Quadros
2016-04-08 7:45 ` Peter Chen
2016-04-18 2:29 ` Peter Chen
2016-04-18 14:11 ` Alan Stern
2016-04-19 1:56 ` Peter Chen
2016-04-20 8:15 ` Roger Quadros
2016-04-20 9:40 ` Peter Chen
2016-04-05 14:05 ` [PATCH v6 02/12] usb: hcd.h: Add OTG to HCD interface Roger Quadros
2016-04-18 7:41 ` Peter Chen
2016-04-05 14:05 ` [PATCH v6 03/12] usb: otg-fsm: use usb_otg wherever possible Roger Quadros
2016-04-18 7:42 ` Peter Chen
2016-04-05 14:05 ` [PATCH v6 04/12] usb: otg-fsm: move host controller operations into usb_otg->hcd_ops Roger Quadros
2016-04-18 8:00 ` Peter Chen
2016-04-05 14:05 ` [PATCH v6 05/12] usb: gadget.h: Add OTG to gadget interface Roger Quadros
2016-04-05 14:05 ` [PATCH v6 06/12] usb: otg: get rid of CONFIG_USB_OTG_FSM in favour of CONFIG_USB_OTG Roger Quadros
2016-04-18 8:05 ` Peter Chen
2016-04-20 8:12 ` Roger Quadros
2016-04-05 14:05 ` [PATCH v6 07/12] usb: otg: add OTG/dual-role core Roger Quadros
2016-04-07 8:52 ` Yoshihiro Shimoda
2016-04-07 11:45 ` Roger Quadros
2016-04-08 11:22 ` Yoshihiro Shimoda
2016-04-11 10:54 ` Roger Quadros
2016-04-14 8:36 ` Yoshihiro Shimoda
2016-04-14 10:59 ` Roger Quadros
2016-04-14 11:15 ` Yoshihiro Shimoda
2016-04-14 11:32 ` Roger Quadros
2016-04-15 9:59 ` Yoshihiro Shimoda
2016-04-15 10:57 ` Roger Quadros
2016-04-15 10:03 ` Yoshihiro Shimoda
2016-04-19 9:18 ` Peter Chen
2016-04-20 5:08 ` Yoshihiro Shimoda
2016-04-20 7:03 ` Roger Quadros
2016-04-22 6:05 ` Peter Chen
2016-04-22 1:26 ` Peter Chen
2016-04-22 3:34 ` Peter Chen
2016-04-22 5:57 ` Yoshihiro Shimoda
2016-04-15 9:25 ` Peter Chen
2016-04-15 11:00 ` Roger Quadros
2016-04-18 2:09 ` Peter Chen
2016-04-20 6:54 ` Roger Quadros
2016-04-20 9:26 ` Peter Chen
2016-04-19 8:06 ` Peter Chen
2016-04-20 7:02 ` Roger Quadros
2016-04-20 9:39 ` Peter Chen
2016-04-21 6:52 ` Peter Chen
2016-04-25 14:05 ` Roger Quadros
2016-04-26 2:07 ` Jun Li
2016-04-26 3:47 ` Peter Chen
2016-04-26 5:11 ` Jun Li
2016-04-26 6:28 ` Peter Chen
2016-04-26 7:00 ` Jun Li
2016-04-26 8:21 ` Peter Chen
2016-04-27 3:15 ` Peter Chen
2016-04-27 10:59 ` Roger Quadros
2016-04-28 1:54 ` Peter Chen
2016-04-28 8:01 ` Roger Quadros
2016-04-27 11:15 ` Roger Quadros
2016-04-05 14:05 ` [PATCH v6 08/12] usb: hcd: Adapt to OTG core Roger Quadros
2016-04-18 6:29 ` Peter Chen
2016-04-19 8:14 ` Peter Chen
2016-04-20 6:47 ` Roger Quadros
2016-04-20 6:46 ` Roger Quadros [this message]
2016-04-27 10:16 ` Jun Li
2016-04-27 11:00 ` Roger Quadros
2016-04-27 11:11 ` Roger Quadros
2016-04-27 12:49 ` Jun Li
2016-04-27 13:18 ` Jun Li
2016-04-05 14:05 ` [PATCH v6 09/12] usb: gadget: udc: adapt " Roger Quadros
2016-04-18 6:59 ` Peter Chen
2016-04-20 6:51 ` Roger Quadros
2016-04-21 6:38 ` Jun Li
2016-04-25 14:04 ` Roger Quadros
2016-04-26 0:07 ` Jun Li
2016-04-27 11:22 ` Roger Quadros
2016-04-28 9:54 ` Roger Quadros
2016-04-28 10:23 ` Jun Li
2016-04-28 12:22 ` Roger Quadros
2016-05-03 7:06 ` Jun Li
2016-05-03 15:44 ` Roger Quadros
2016-05-04 1:47 ` Peter Chen
2016-05-04 3:35 ` Peter Chen
2016-05-04 6:37 ` Roger Quadros
2016-05-04 7:53 ` Peter Chen
2016-05-04 8:03 ` Jun Li
2016-05-04 8:40 ` Roger Quadros
2016-05-04 8:39 ` Peter Chen
2016-04-05 14:05 ` [PATCH v6 10/12] usb: doc: dt-binding: Add otg-controller property Roger Quadros
2016-04-05 14:05 ` [PATCH v6 11/12] usb: core: hub: Notify OTG fsm when A device sets b_hnp_enable Roger Quadros
2016-04-18 7:08 ` Peter Chen
2016-04-27 14:35 ` Roger Quadros
2016-04-05 14:05 ` [PATCH v6 12/12] usb: host: xhci-plat: Add otg device to platform data Roger Quadros
2016-04-06 3:23 ` Yoshihiro Shimoda
2016-04-06 6:30 ` Roger Quadros
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