From: Roger Quadros <rogerq@ti.com>
To: Peter Chen <hzpeterchen@gmail.com>
Cc: <peter.chen@freescale.com>, <balbi@kernel.org>,
<tony@atomide.com>, <gregkh@linuxfoundation.org>,
<dan.j.williams@intel.com>, <mathias.nyman@linux.intel.com>,
<Joao.Pinto@synopsys.com>, <sergei.shtylyov@cogentembedded.com>,
<jun.li@freescale.com>, <grygorii.strashko@ti.com>,
<yoshihiro.shimoda.uh@renesas.com>, <robh@kernel.org>,
<nsekhar@ti.com>, <b-liu@ti.com>, <linux-usb@vger.kernel.org>,
<linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<devicetree@vger.kernel.org>
Subject: Re: [PATCH v8 13/14] usb: gadget: udc: adapt to OTG core
Date: Thu, 2 Jun 2016 14:07:52 +0300 [thread overview]
Message-ID: <57501388.9000107@ti.com> (raw)
In-Reply-To: <20160601073804.GC15045@shlinux2>
On 01/06/16 10:38, Peter Chen wrote:
> On Fri, May 13, 2016 at 01:03:27PM +0300, Roger Quadros wrote:
>> @@ -530,6 +683,8 @@ void usb_del_gadget_udc(struct usb_gadget *gadget)
>> }
>> mutex_unlock(&udc_lock);
>>
>> + mutex_unlock(&udc_lock);
>> +
>
> Here, you have one more mutex_unlock.
Will fix it. Thanks.
>> kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE);
>> flush_work(&gadget->work);
>> device_unregister(&udc->dev);
>> @@ -539,6 +694,13 @@ EXPORT_SYMBOL_GPL(usb_del_gadget_udc);
>>
>> /* ------------------------------------------------------------------------- */
>>
>> +struct otg_gadget_ops otg_gadget_intf = {
>> + .start = usb_gadget_start,
>> + .stop = usb_gadget_stop,
>> + .connect_control = usb_gadget_connect_control,
>> +};
>> +
>> +/* udc_lock must be held */
>> static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *driver)
>> {
>> int ret;
>> @@ -553,12 +715,20 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri
>> ret = driver->bind(udc->gadget, driver);
>> if (ret)
>> goto err1;
>> - ret = usb_gadget_udc_start(udc);
>> - if (ret) {
>> - driver->unbind(udc->gadget);
>> - goto err1;
>> +
>> + /* If OTG, the otg core starts the UDC when needed */
>> + if (udc->gadget->otg_dev) {
>> + mutex_unlock(&udc_lock);
>> + usb_otg_register_gadget(udc->gadget, &otg_gadget_intf);
>> + mutex_lock(&udc_lock);
>> + } else {
>> + ret = usb_gadget_udc_start(udc);
>> + if (ret) {
>> + driver->unbind(udc->gadget);
>> + goto err1;
>> + }
>> + usb_udc_connect_control(udc);
>> }
>> - usb_udc_connect_control(udc);
>>
>> kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
>> return 0;
>> @@ -660,9 +830,15 @@ static ssize_t usb_udc_softconn_store(struct device *dev,
>> return -EOPNOTSUPP;
>> }
>>
>> + /* In OTG mode we don't support softconnect, but b_bus_req */
>> + if (udc->gadget->otg_dev) {
>> + dev_err(dev, "soft-connect not supported in OTG mode\n");
>> + return -EOPNOTSUPP;
>> + }
>> +
>> if (sysfs_streq(buf, "connect")) {
>> usb_gadget_udc_start(udc);
>> - usb_gadget_connect(udc->gadget);
>> + usb_udc_connect_control(udc);
>> } else if (sysfs_streq(buf, "disconnect")) {
>> usb_gadget_disconnect(udc->gadget);
>> udc->driver->disconnect(udc->gadget);
>> diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
>> index 3ecfddd..79d654f 100644
>> --- a/include/linux/usb/gadget.h
>> +++ b/include/linux/usb/gadget.h
>> @@ -1162,6 +1162,10 @@ extern int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget);
>> extern void usb_del_gadget_udc(struct usb_gadget *gadget);
>> extern char *usb_get_gadget_udc_name(void);
>>
>> +extern int usb_otg_add_gadget_udc(struct device *parent,
>> + struct usb_gadget *gadget,
>> + struct device *otg_dev);
>> +
>> /*-------------------------------------------------------------------------*/
>>
>> /* utility to simplify dealing with string descriptors */
>> --
>> 2.7.4
>>
--
cheers,
-roger
next prev parent reply other threads:[~2016-06-02 11:08 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
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 [this message]
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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