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: [v4,5/6] usb: musb: gadget: implement optional explicit status stage From: Paul Elder Message-Id: <20190108054918.GB31873@localhost.localdomain> Date: Tue, 8 Jan 2019 00:49:18 -0500 To: Alan Stern Cc: laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com, b-liu@ti.com, rogerq@ti.com, balbi@kernel.org, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: T24gU3VuLCBKYW4gMDYsIDIwMTkgYXQgMDM6MDM6MDlQTSAtMDUwMCwgQWxhbiBTdGVybiB3cm90 ZToKPiBPbiBTdW4sIDYgSmFuIDIwMTksIFBhdWwgRWxkZXIgd3JvdGU6Cj4gCj4gPiBJbXBsZW1l bnQgdGhlIG1lY2hhbmlzbSBmb3Igb3B0aW9uYWwgZXhwbGljaXQgc3RhdHVzIHN0YWdlIGZvciB0 aGUgTVVTQgo+ID4gZHJpdmVyLiBUaGlzIGFsbG93cyBhIGZ1bmN0aW9uIGRyaXZlciB0byBzcGVj aWZ5IHdoYXQgdG8gcmVwbHkgZm9yIHRoZQo+ID4gc3RhdHVzIHN0YWdlLiBUaGUgZnVuY3Rpb25h bGl0eSBmb3IgYW4gaW1wbGljaXQgc3RhdHVzIHN0YWdlIGlzCj4gPiByZXRhaW5lZC4KPiA+IAo+ ID4gU2lnbmVkLW9mZi1ieTogUGF1bCBFbGRlciA8cGF1bC5lbGRlckBpZGVhc29uYm9hcmQuY29t Pgo+ID4gdjEgUmV2aWV3ZWQtYnk6IExhdXJlbnQgUGluY2hhcnQgPGxhdXJlbnQucGluY2hhcnRA aWRlYXNvbmJvYXJkLmNvbT4KPiA+IHYxIEFja2VkLWJ5OiBCaW4gTGl1IDxiLWxpdUB0aS5jb20+ Cj4gPiAtLS0KPiA+IE5vIGNoYW5nZSBmcm9tIHYzCj4gPiAKPiA+IENoYW5nZXMgZnJvbSB2MjoK PiA+IC0gdXBkYXRlIGNhbGwgdG8gdXNiX2dhZGdldF9jb250cm9sX2NvbXBsZXRlIHRvIGluY2x1 ZGUgc3RhdHVzCj4gPiAtIHNpbmNlIHNlbmRpbmcgU1RBTEwgZnJvbSB0aGUgZnVuY3Rpb24gZHJp dmVyIGlzIG5vdyBkb25lIHdpdGgKPiA+ICAgdXNiX2VwX3NldF9oYWx0LCB0aGVyZSBpcyBubyBu ZWVkIGZvciB0aGUgaW50ZXJuYWwgZXAwX3NlbmRfcmVzcG9uc2UgdG8KPiA+ICAgdGFrZSBhIHN0 YWxsL2FjayBwYXJhbWV0ZXI7IHJlbW92ZSB0aGUgcGFyYW1ldGVyIGFuZCBtYWtlIHRoZSBmdW5j dGlvbgo+ID4gICBvbmx5IHNlbmQgYWNrLCBhbmQgcmVtb3ZlIGNoZWNraW5nIGZvciB0aGUgc3Rh dHVzIHJlcGx5IGluIHRoZQo+ID4gICB1c2JfcmVxdWVzdCBmb3IgdGhlIHN0YXR1cyBzdGFnZQo+ ID4gCj4gPiBDaGFuZ2VzIGZyb20gdjE6Cj4gPiAtIG9idmlvdXMgY2hhbmdlIHRvIGltcGxlbWVu dCB2MiBtZWNoYW5pc20gbGFpZCBvdXQgYnkgNC82IG9mIHRoaXMKPiA+ICAgc2VyaWVzIChzZW5k X3Jlc3BvbnNlLCBhbmQgbXVzYl9nX2VwMF9zZW5kX3Jlc3BvbnNlIGZ1bmN0aW9uIGhhcwo+ID4g ICBiZWVuIHJlbW92ZWQsIGNhbGwgdG8gdXNiX2dhZGdldF9jb250cm9sX2NvbXBsZXRlIGhhcyBi ZWVuIGFkZGVkKQo+ID4gLSBlcDBfc2VuZF9yZXNwb25zZSdzIGFjayBhcmd1bWVudCBoYXMgYmVl biBjaGFuZ2VkIGZyb20gc3RhbGwKPiA+IC0gbGFzdF9wYWNrZXQgZmxhZyBpbiBlcDBfcnhzdGF0 ZSBoYXMgYmVlbiByZW1vdmVkLCBzaW5jZSBpdCBpcyBlcXVhbCB0bwo+ID4gICByZXEgIT0gTlVM TAo+ID4gCj4gPiAgZHJpdmVycy91c2IvbXVzYi9tdXNiX2dhZGdldC5jICAgICB8ICAyICsrCj4g PiAgZHJpdmVycy91c2IvbXVzYi9tdXNiX2dhZGdldF9lcDAuYyB8IDIzICsrKysrKysrKysrKysr KysrKysrKysrCj4gPiAgMiBmaWxlcyBjaGFuZ2VkLCAyNSBpbnNlcnRpb25zKCspCj4gPiAKPiA+ IGRpZmYgLS1naXQgYS9kcml2ZXJzL3VzYi9tdXNiL211c2JfZ2FkZ2V0LmMgYi9kcml2ZXJzL3Vz Yi9tdXNiL211c2JfZ2FkZ2V0LmMKPiA+IGluZGV4IGQzZjMzZjQ0OTQ0NS4uYTdhOTkyYWIwYzlk IDEwMDY0NAo+ID4gLS0tIGEvZHJpdmVycy91c2IvbXVzYi9tdXNiX2dhZGdldC5jCj4gPiArKysg Yi9kcml2ZXJzL3VzYi9tdXNiL211c2JfZ2FkZ2V0LmMKPiA+IEBAIC0xNDUsNiArMTQ1LDggQEAg X19hY3F1aXJlcyhlcC0+bXVzYi0+bG9jaykKPiA+ICAKPiA+ICAJdHJhY2VfbXVzYl9yZXFfZ2Io cmVxKTsKPiA+ICAJdXNiX2dhZGdldF9naXZlYmFja19yZXF1ZXN0KCZyZXEtPmVwLT5lbmRfcG9p bnQsICZyZXEtPnJlcXVlc3QpOwo+ID4gKwl1c2JfZ2FkZ2V0X2NvbnRyb2xfY29tcGxldGUoJm11 c2ItPmcsIHJlcXVlc3QtPmV4cGxpY2l0X3N0YXR1cywKPiA+ICsJCQlyZXF1ZXN0LT5zdGF0dXMp Owo+IAo+IEkgaGF2ZW4ndCBwYWlkIG11Y2ggYXR0ZW50aW9uIHRvIHRoaXMgcGFydCBvZiB0aGUg cGF0Y2ggc2VyaWVzLCBub3QgCj4ga25vd2luZyBtdWNoIGFib3V0IG11c2IuICBTdGlsbCwgaXQn cyBjbGVhciB0aGF0IAo+IHVzYl9nYWRnZXRfY29udHJvbF9jb21wbGV0ZSBzaG91bGQgYmUgY2Fs bGVkIG9ubHkgZm9yIHRyYW5zZmVycyBvbiAKPiBlcDAuICBZb3UgbmVlZCB0byB0ZXN0IHRoZSBl bmRwb2ludCB2YWx1ZS4KCk9oIG9vcHMsIHllYWgsIHlvdSdyZSByaWdodC4KCj4gQW5vdGhlciBw cm9ibGVtOiB0aGUgY29tcGxldGlvbiBoYW5kbGVyIG1heSBkZWFsbG9jYXRlIHRoZSByZXF1ZXN0 LiAgCj4gRGVyZWZlcmVuY2luZyByZXF1ZXN0LT5leHBpY2l0X3N0YXR1cyBhbmQgcmVxdWVzdC0+ c3RhdHVzIHdvdWxkIHRoZW4gCj4gY2F1c2UgZXJyb3JzLiAgV291bGQgaXQgYmUgcHJlZmVyYWJs ZSB0byBjYWxsIAo+IHVzYl9nYWRnZXRfY29udHJvbF9jb21wbGV0ZSBiZWZvcmUgdXNiX2dhZGdl dF9naXZlYmFja19yZXF1ZXN0PyAgSWYgCj4gaXQgZ2V0cyBkb25lIHRoYXQgd2F5IHRoZW4gdGhl IGFyZ3VtZW50cyBjb3VsZCBiZSBzaW1wbGlmaWVkOiB3ZSBjb3VsZCAKPiBwYXNzIGEgcG9pbnRl ciB0byB0aGUgcmVxdWVzdCBpbnN0ZWFkIG9mIHRoZSBzZXBhcmF0ZSBleHBsaWNpdF9zdGF0dXMg Cj4gYW5kIHN0YXR1cyB2YWx1ZXMuCgpJIHRob3VnaHQgdGhhdCB1c2JfZ2FkZ2V0X2NvbnRyb2xf Y29tcGxldGUgbmVlZHMgdG8gY2hlY2sgdGhlIHN0YXR1cyBvZgp0aGUgcmVxdWVzdCB0aGF0IHdh cyBnaXZlbiBiYWNrLiBEb2Vzbid0IHRoYXQgbWVhbiB0aGF0CnVzYl9nYWRnZXRfZ2l2ZWJhY2tf cmVxdWVzdCBtdXN0IGJlIGNhbGxlZCBmaXJzdD8KCkkgd2FzIHRoaW5raW5nIHRoYXQgbWF5YmUg d2UgY291bGQgc2F2ZSBleHBsaWNpdF9zdGF0dXMgYmVmb3JlIGNhbGxpbmcKdXNiX2dhZGdldF9n aXZlYmFja19yZXF1ZXN0LCBhbmQgaWYgcmVxdWVzdCBpcyBzdGlsbCB2YWxpZCB0aGVuIHdlIGNh bgpwdWxsIHN0YXR1cyBmcm9tIGl0IG90aGVyd2lzZSB1c2UgMCwgYnV0IHRoZW4gd291bGQgdGhh dCBiZSBjb25zaWRlcmVkCmFkZGluZyBjb21wbGV4aXR5IHRvIFVEQ3MgdGhhdCB3YW50IHRvIGlt cGxlbWVudCBvcHRpb25hbCBzdGF0dXMgc3RhZ2UKZGVsYXk/IE9yIGFkZCBhIHdyYXBwZXIgZnVu Y3Rpb24/CgpPbiB0aGUgb3RoZXIgaGFuZCwgaWYgd2UgZG8gcHV0IHVzYl9nYWRnZXRfY29udHJv bF9jb21wbGV0ZSBiZWZvcmUKdXNiX2dhZGdldF9naXZlYmFja19yZXF1ZXN0LCB0aGVuIHRoZSBj b250cm9sIHRyYW5zZmVyIHdvdWxkIGNvbXBsZXRlCmJlZm9yZSB0aGUgZnVuY3Rpb24gZHJpdmVy IGhhcyBhIGNoYW5jZSB0byBjb21wbGV0ZSwgYnV0IGlmIHRoZSBmdW5jdGlvbgpkcml2ZXIgd2Fu dGVkIHRvIGludGVydmVuZS9kZXRlcm1pbmUgdGhlIHN0YXR1cyBzdGFnZSB0aGVuIGl0IHdvdWxk IGhhdmUKZ29uZSB0aHJvdWdoIHRoZSBuZXcgbWVjaGFuaXNtIHRoYXQgd2UncmUgbWFraW5nIGhl cmUuIFNvIGl0IGNvdWxkIGJlCmZpbmUgdG8gc3dpdGNoIHRoZSBvcmRlci4gTXkgdGVzdHMgZm9y IGl0IHdvcmsgdG9vLCBzbyBJIGd1ZXNzIHdlJ2xsIGdvCndpdGggdXNiX2dhZGdldF9jb250cm9s X2NvbXBsZXRlIGJlZm9yZSB1c2JfZ2FkZ2V0X2dpdmViYWNrX3JlcXVlc3QKdGhlbi4gSW4gdGhh dCBjYXNlIHVzYl9nYWRnZXRfY29udHJvbF9jb21wbGV0ZSBkb2Vzbid0IG5lZWQgdG8gY2hlY2sg dGhlCnN0YXR1cyBvZiB0aGUgcmVxdWVzdCwgc2luY2UgdGhlcmUgaXNuJ3QgYW55LCByaWdodD8K CgpUaGFua3MsCgpQYXVsIEVsZGVyCg==