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: Paul Kocialkowski Message-Id: <1522324644.1746.19.camel@bootlin.com> Date: Thu, 29 Mar 2018 13:57:24 +0200 To: Maxime Ripard Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Greg Kroah-Hartman , Bin Liu , Chen-Yu Tsai , Paul Kocialkowski List-ID: SGksCgpPbiBUaHUsIDIwMTgtMDMtMjkgYXQgMTE6MjMgKzAyMDAsIE1heGltZSBSaXBhcmQgd3Jv dGU6Cj4gT24gV2VkLCBNYXIgMjgsIDIwMTggYXQgMTE6NTI6MTNQTSArMDIwMCwgUGF1bCBLb2Np YWxrb3dza2kgd3JvdGU6Cj4gPiBUaGlzIGFsbG93cyBkdWFsLXJvbGUgcG9ydHMgdG8gYmUgcmVw b3J0ZWQgYXMgaGF2aW5nIGdhZGdldCBtb2RlIGJ5Cj4gPiB0aGUKPiA+IG11c2JfaGFzX2dhZGdl dCBoZWxwZXIuIFRoaXMgaXMgcmVxdWlyZWQgdG8gZW5hYmxlIE1VU0IgYXQgYWxsIHdpdGgKPiA+ IE1VU0IKPiA+IGdsdWUgbGF5ZXJzIHRoYXQgc2V0IHRoZSBwb3J0IG1vZGUgdG8gTVVTQl9QT1JU X01PREVfRFVBTF9ST0xFIGF0Cj4gPiBpbml0Lgo+ID4gCj4gPiBNb3N0IG5vdGFibHksIHRoaXMg YWxsb3dzIGNhbGxpbmcgbXVzYl9zdGFydCB3aGVuIG5lZWRlZCBpbiB0aGUKPiA+IHZpcnR1YWwK PiA+IE1VU0Igcm9vdCBIVUIsIHJlZ2FyZGxlc3Mgb2Ygd2hldGhlciB0aGUgY3VycmVudCBtb2Rl IHNob3VsZCBiZQo+ID4gZ2FkZ2V0Cj4gPiBvciBob3N0Lgo+ID4gCj4gPiBUaGlzIGZpeGVzIFVT QiBPVEcgb24gQWxsd2lubmVyIGRldmljZXMgdGhhdCBJIGNvdWxkIHRlc3QgaXQgd2l0aCwKPiA+ IG1haW5seSBBMjAgZGV2aWNlcy4KPiA+IAo+ID4gU2lnbmVkLW9mZi1ieTogUGF1bCBLb2NpYWxr b3dza2kgPGNvbnRhY3RAcGF1bGsuZnI+Cj4gCj4gU3VyZWx5IHRoZXJlJ3MgbW9yZSB0byBpdCB0 aGFuIHRoYXQuIFRoZSBnYWRnZXQgbW9kZSBvZiBBMjAgYm9hcmRzCj4gaGF2ZSBiZWVuIHdvcmtp bmcgaW4gdGhlIHBhc3QsIGluY2x1ZGluZyB3aGVuIGNvbXBpbGluZyB3aXRoIG1VU0IKPiBzZXR1 cCBhcyBkdWFsIHJvbGUuCj4KPiBJcyB0aGlzIGEgcmVncmVzc2lvbiBzaW5jZSBhIHBhcnRpY3Vs YXIgY29tbWl0PyBPciBpcyB0aGVyZSBhbm90aGVyLAo+IGRlZXBlciBpc3N1ZSBvdmVybG9va2Vk IGluIHRoZSBjb21taXQgbG9nPwoKVGhlIHJvb3Qgb2YgdGhlIGlzc3VlIGhlcmUgaXMgdGhhdCBt dXNiX3N0YXJ0IGlzIG5vdCBjYWxsZWQgYXQgYW55IHBvaW50CndpdGhvdXQgdGhpcyBwYXRjaC4g TXkgdW5kZXJzdGFuZGluZyBvZiB0aGUgZmxvdyBpcyB0aGUgZm9sbG93aW5nOiB3aGVuCnRoZSBQ SFkgZGV0ZWN0cyB0aGF0IHRoZXJlIHdhcyBhIFZCVVMvSUQgY2hhbmdlLCBpdCB3aWxsIG5vdGlm eSBpdHMKbGlzdGVuZXJzIChtYWlubHkgdGhlIG11c2Igc3VueGkgZ2x1ZSBsYXllcikuIFRoaXMg d2lsbCB0aGVuIHNjaGVkdWxlCnRoZSBkcml2ZXIncyB3b3JrIChzdW54aV9tdXNiX3dvcmspLCB3 aGljaCBkb2VzIG5vdGhpbmcgc2luY2UgdGhlClNVTlhJX01VU0JfRkxfRU5BQkxFRCBiaXQgd2Fz IG5ldmVyIHNldC4gVGhpcyBiaXQgaXMgb25seSBzZXQgYWZ0ZXIKY2FsbGluZyBzdW54aV9tdXNi X2VuYWJsZSwgd2hpY2ggaXMgY2FsbGVkIGZyb20gbXVzYl9wbGF0Zm9ybV9lbmFibGUsCnRoYXQg b3JpZ2luYXRlcyBmcm9tIG11c2Jfc3RhcnQuCgpDdXJyZW50bHkgSSBzZWUgdHdvIHBsYWNlcyB3 aGVyZSBtdXNiX3N0YXJ0IGlzIGNhbGxlZDoKKiBtdXNiX3ZpcnRodWIKKiBtdXNiX2dhZGdldAoK SW4gdGhlIGxhdHRlciBjYXNlLCBpdCBpcyBpbiB0dXJuIGNhbGxlZCBmcm9tIHVkY19zdGFydCwg d2hpY2ggc2hvdWxkCnByb2JhYmx5IChjb3JyZWN0IG1lIGlmIEknbSB3cm9uZykgaGFwcGVuIGxh dGVyIGluIHRoZSBjYWxsIGNoYWluIHRoYW4KSUQvVkJVUyBjaGFuZ2Ugbm90aWZpY2F0aW9uIHRp bWUuCgpJbiB0aGUgZm9ybWVyIGNhc2UsIG11c2Jfc3RhcnQgaXMgY2FsbGVkIGluIHRoZSByb290 IGNvbnRyb2xsZXIgaHViCmNvbnRyb2wsIHdoZW4gc2V0dGluZyB0aGUgVVNCX1BPUlRfRkVBVF9Q T1dFUiBmZWF0dXJlLiBUaGlzIGxvb2tzCnBlcmZlY3RseSBsZWdpdCBhbmQgSU1PIHRoaXMgaXMg d2hlcmUgaXQgc2hvdWxkIGJlIGluaXRpYWxseSBjYWxsaW5nCm11c2Jfc3RhcnQgaW4gdGhlIGR1 YWwgcm9sZSBjYXNlLiBUaGUga2VybmVsIGlzIGluZGVlZCBzZXR0aW5nIHRoZQpmZWF0dXJlLCBv bmx5IHRoYXQgaXQgZmFpbHMgdG8gZW5hYmxlIG11c2Igd2l0aG91dCB0aGlzIHBhdGNoLgoKRmly c3QsIEknZCBsaWtlIHRvIG1ha2Ugc3VyZSB0aGF0IHRoaXMgdW5kZXJzdGFuZGluZyBvZiB0aGUg ZmxvdyBpcwpjb3JyZWN0IGFzIEkgbWF5IGhhdmUgbWlzc2VkIHNvbWV0aGluZyBoZXJlLiBEb2Vz IGl0IG1ha2Ugc2Vuc2U/CgpUaGVuLCBpdCBzZWVtcyB0aGF0IHRoZSBvZmZlbmRpbmcgY29tbWl0 IGlzOiBiZTlkMzk4ODFmYzRmCigidXNiOiBtdXNiOiBob3N0OiByZWx5IG9uIHBvcnRfbW9kZSB0 byBjYWxsIG11c2Jfc3RhcnQoKSIpCgpUaGF0IGl0c2VsZiBmaXhlZDogYWU0NGRmMmUyMWI1Cigi dXNiOiBtdXNiOiBjYWxsIG11c2Jfc3RhcnQoKSBvbmx5IG9uY2UgaW4gT1RHIG1vZGUiKQoKU3Rp bGwsIHRoaXMgY29tbWl0IHdhcyBhdXRob3JlZCBpbiBKdW5lIDIwMTUsIHNvIGFsbW9zdCAzIHll YXJzIGFnby4KSW4gdGhlIG1lYW50aW1lLCB0aGUgc3VueGkgZHJpdmVyIGhhcyByZWNlaXZlZCBm ZWF0dXJlIGltcHJvdmVtZW50cywgc28KaXQgc2VlbXMgaGFyZCB0byBiZWxpZXZlIHRoYXQgaXQg d2FzIGJyb2tlbiBhbGwgdGhpcyB0aW1lLi4uCgpDaGVlcnMsCg==