From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: usb: musb: Support gadget mode when the port is set to dual role From: Bin Liu Message-Id: <20190322140404.GH25852@uda0271908> Date: Fri, 22 Mar 2019 09:04:04 -0500 To: Maxime Ripard Cc: Greg Kroah-Hartman , Paul Kocialkowski , Paul Kocialkowski , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Chen-Yu Tsai List-ID: SGkgYWxsLAoKT24gRnJpLCBNYXIgMjIsIDIwMTkgYXQgMDI6NDY6MzBQTSArMDEwMCwgTWF4aW1l IFJpcGFyZCB3cm90ZToKPiA+Cj4gPiBBZ2FpbiwgdGhpbmsgYWJvdXQgYW4gZW1iZWRkZWQgcHJv ZHVjdCwKPiAKPiBUaGF0J3MgYWxsIEknbSB0aGlua2luZyBhYm91dC4KPiAKPiA+IGlmIGRyX21v ZGUgaXMgJ290Zycgd2hpY2ggaW5kaWNhdGVzIHRoZSBwZXJpcGhlcmFsIG1vZGUgd2lsbCBiZSB1 c2VkCj4gPiBhdCBzb21lIHBvaW50Cj4gCj4gTm8sIGl0IGluZGljYXRlcyB0aGF0IGl0ICptaWdo dCogYmUgdXNlZCBhdCBzb21lIHBvaW50LCBiYXNlZCBvbiBhCj4gbnVtYmVyIG9mIGV4dGVybmFs IGZhY3RvcnMsIGluY2x1ZGluZzoKPiAgIC0gV2hldGhlciBvciBub3QgdGhlIHVzZXIgaGFzIHBs dWdnZWQgc29tZXRoaW5nIGluIHRoZSBjb25uZWN0ZWQgVVNCCj4gICAgIGNvbm5lY3Rvcgo+ICAg LSBJZiB0aGV5IGRpZCBzbywgaG93IHRoZSBJRCBwaW4gaGFzIGJlZW4gd2lyZWQgKGFuZCB0aGVy ZWZvcmUsIGlzCj4gICAgIGEgZGV2aWNlIG9yIGEgaG9zdCBvbiB0aGUgb3RoZXIgZW5kKQo+ICAg LSBBbmQgaG93IHRoZSBzeXN0ZW0gZGVzaWduZXIgZGVjaWRlZCB0byBjb25maWd1cmUgdGhlaXIg a2VybmVsIGFuZAo+ICAgICB1c2Vyc3BhY2UuCj4gCj4gPiB3aGVuIGFuZCBob3cgdG8gbG9hZCB0 aGUgZ2FkZ2V0IGRyaXZlciBpZiBpdCBpcyBub3QgbG9hZGVkCj4gPiBhdXRvbWF0aWNhbGx5IHdo ZW4gTGludXggYm9vdHMgdXA/IHRoZSBlbmQgdXNlciBkb2Vzbid0IGhhdmUgYWNjZXNzCj4gPiB0 byB0aGUgY29uc29sZS4KPiAKPiBBbiBhcHBsaWNhdGlvbiBjb3VsZCBsb2FkIGl0LiBBbmQgcmVh bGx5LCB3ZSBzdGFydCBzZWVpbmcgU29DcyBpbiBtb3JlCj4gYW5kIG1vcmUgcGMtbGlrZSBkZXZp Y2VzLCBpbmNsdWRpbmcgd2l0aCBtVVNCLCBzbyBJIGRvbid0IHRoaW5rIHdlCj4gc2hvdWxkIGJl IG1ha2luZyBhc3N1bXB0aW9ucyBoZXJlLgo+IAo+IEhvdyBkbyB5b3UgdGhpbmsgRmVkb3JhLCBV YnVudHUgb3IgRGViaWFuIHdvdWxkIGJlaGF2ZSBoZXJlPwo+IAo+ID4gPiBCZWNhdXNlIG5vIG90 aGVyIGNvbnRyb2xsZXIgcmVxdWlyZXMgaXQgYW5kIHRoZXJlZm9yZSBpdCdzIG5vdAo+ID4gPiBz dGFuZGFyZCBhbmQgdmlvbGF0ZXMgdGhlIHByaW5jaXBsZSBvZiBsZWFzdCBzdXJwcmlzZT8KPiA+ Cj4gPiBJIGtub3cgbm8gb3RoZXIgY29udHJvbGxlciBkb2VzIHRoaXMsIGJ1dCB0aGlzIGRvZXNu J3QgbWVhbiBpdCBpcyBub3QKPiA+IHN0YW5kYXJkLgo+IAo+IEknbSBwcmV0dHkgc3VyZSB0aGF0 IHdvdWxkIGJlIHRoZSBkZWZpbml0aW9uIG9mICJzdGFuZGFyZCIsIG9yIG9mIGEKPiBub3JtIGF0 IGxlYXN0Lgo+IAo+ID4gPiBBbmQgZXZlbiB3aXRob3V0IHRha2luZyB0aGlzIGludG8gYWNjb3Vu dCwgdGhlcmUncyBhbHNvIHRoZSBmYWN0IHRoYXQKPiA+ID4gd2hpbGUgdGhlICpoYXJkd2FyZSog Y2FuIGRvIGR1YWwgcm9sZSwgdGhlIHNvZnR3YXJlIG1pZ2h0IGRlY2lkZQo+ID4gPiBvdGhlcndp c2UuIElmIEkgZG9uJ3Qgd2FudCB0byBoYXZlIHN1cHBvcnQgZm9yIGFueSBnYWRnZXQgKGF0IGFs bCkgaW4KPiA+ID4gdGhlIGVuZCBzeXN0ZW0sIHRoZW4gd2h5IHNob3VsZCBJIGJlIGZvcmNlZCB0 byBjb21waWxlIGFuZCBsb2FkCj4gPiA+IHNvbWV0aGluZyBJIGRvbid0IGV2ZW4gd2FudCB0byB1 c2UgaW4gdGhlIGZpcnN0IHBsYWNlPwo+ID4KPiA+IHRoZW4gZHJfbW9kZSBzaG91bGQgYmUgc2V0 IHRvICdob3N0JyBpbnN0ZWFkLCB5b3UgZG9uJ3QgaGF2ZSB0byBsb2FkIGEKPiA+IGdhZGdldCBp ZiBwZXJpcGhlcmFsIG1vZGUgd2lsbCBuZXZlciBiZSB1c2VkLgo+IAo+IE5vLiBUaGUgaGFyZHdh cmUgaXMgcGVyZmVjdGx5IGNhcGFibGUgb2YgdXNpbmcgT1RHLiBUaGUgc29mdHdhcmUgaGFzCj4g YmVlbiBjb25maWd1cmVkIG5vdCB0by4KCkkgZG9uJ3QgdGhpbmsgdGhlIGFyZ3VtZW50IHdpbGwg bGVhZCB0byBhbnl3aGVyZS4gTGV0J3Mgc3RvcCBhcmd1aW5nCmhlcmUsIHNvIHRoYXQgeW91IGNh biBzcGVuZCB0aW1lIHRvIGZpeCB0aGUgZHJpdmVyIGlmIHlvdSB3YW50IHRvLgoKUmVnYXJkcywK LUJpbi4K