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: [v2] usb: typec: tcpm: Try PD-2.0 if sink does not respond to 3.0 source-caps From: Guenter Roeck Message-Id: <20190316175836.GA31909@roeck-us.net> Date: Sat, 16 Mar 2019 10:58:36 -0700 To: Hans de Goede Cc: Greg Kroah-Hartman , Heikki Krogerus , linux-usb@vger.kernel.org List-ID: T24gU2F0LCBNYXIgMTYsIDIwMTkgYXQgMDQ6NTc6MTJQTSArMDEwMCwgSGFucyBkZSBHb2VkZSB3 cm90ZToKPiBQRCAyLjAgc2lua3MgYXJlIHN1cHBvc2VkIHRvIGFjY2VwdCBzcmMtY2FwYWJpbGl0 aWVzIHdpdGggYSAzLjAgaGVhZGVyIGFuZAo+IHNpbXBseSBpZ25vcmUgYW55IHNyYyBQRE9zIHdo aWNoIHRoZSBzaW5rIGRvZXMgbm90IHVuZGVyc3RhbmQgc3VjaCBhcyBQUFMKPiBidXQgc29tZSAy LjAgc2lua3MgaW5zdGVhZCBpZ25vcmUgdGhlIGVudGlyZSBQRF9EQVRBX1NPVVJDRV9DQVAgbWVz c2FnZSwKPiBjYXVzaW5nIGNvbnRyYWN0IG5lZ290aWF0aW9uIHRvIGZhaWwuCj4gCj4gVGhpcyBj b21taXQgZml4ZXMgc3VjaCBzaW5rcyBub3Qgd29ya2luZyBieSByZS10cnlpbmcgdGhlIGNvbnRy YWN0Cj4gbmVnb3RpYXRpb24gd2l0aCBQRC0yLjAgc291cmNlLWNhcHMgbWVzc2FnZXMgaWYgd2Ug ZG9uJ3QgaGF2ZSBhIGNvbnRyYWN0Cj4gYWZ0ZXIgUERfTl9IQVJEX1JFU0VUX0NPVU5UIGhhcmQt cmVzZXQgYXR0ZW1wdHMuCj4gCj4gVGhlIHByb2JsZW0gZml4ZWQgYnkgdGhpcyBjb21taXQgd2Fz IG5vdGljZWQgd2l0aCBhIFR5cGUtQyB0byBWR0EgZG9uZ2xlLgo+IApMR1RNLgoKUmV2aWV3ZWQt Ynk6IEd1ZW50ZXIgUm9lY2sgPGxpbnV4QHJvZWNrLXVzLm5ldD4KCk9uZSBxdWVzdGlvbiB0aG91 Z2g6IFNob3VsZG4ndCB0Y3BtX3BkX3NlbmRfc291cmNlX2NhcHMoKSBmaWx0ZXIgb3V0IFBEIDMu MApvbmx5IGNhcGFiaWxpdGllcyBpZiB0aGUgcmV2aXNpb24gaXMgcmVkdWNlZCA/CgpUaGFua3Ms Ckd1ZW50ZXIKCj4gU2lnbmVkLW9mZi1ieTogSGFucyBkZSBHb2VkZSA8aGRlZ29lZGVAcmVkaGF0 LmNvbT4KPiAtLS0KPiBUaGUgVHlwZS1DIHRvIFZHQSBkb25nbGUgb24gd2hpY2ggdGhpcyBlbmNv dW50ZXJlZCBsb29rcyBsaWtlIHRoaXMgb25lOgo+IGh0dHBzOi8vd3d3LmFsaWV4cHJlc3MuY29t L2l0ZW0vTWFsZS1VU0ItMy0xLVR5cGUtQy1VU0ItQy10by1GZW1hbGUtVkdBLUFkYXB0ZXItQ2Fi bGUtMTBHYnBzLWZvci1OZXcvMzI4OTgyNzQ0NzYuaHRtbAo+IC0tLQo+IENoYW5nZXMgaW4gdjI6 Cj4gLVJlZmFjdG9yIHRoZSBwYXRjaCB0byBhdm9pZCBhIGNoZWNrIHZzIHVzZSByYWNlIHdydCBu ZWdvdGlhdGVkX3Jldgo+IC0tLQo+ICBkcml2ZXJzL3VzYi90eXBlYy90Y3BtL3RjcG0uYyB8IDI3 ICsrKysrKysrKysrKysrKysrKysrKysrKysrLQo+ICAxIGZpbGUgY2hhbmdlZCwgMjYgaW5zZXJ0 aW9ucygrKSwgMSBkZWxldGlvbigtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3VzYi90eXBl Yy90Y3BtL3RjcG0uYyBiL2RyaXZlcnMvdXNiL3R5cGVjL3RjcG0vdGNwbS5jCj4gaW5kZXggZjFj MzlhM2M3NTM0Li5kMzRlOTQ1ZTVkMDkgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy91c2IvdHlwZWMv dGNwbS90Y3BtLmMKPiArKysgYi9kcml2ZXJzL3VzYi90eXBlYy90Y3BtL3RjcG0uYwo+IEBAIC0z Nyw2ICszNyw3IEBACj4gIAlTKFNSQ19BVFRBQ0hFRCksCQkJXAo+ICAJUyhTUkNfU1RBUlRVUCks CQkJCVwKPiAgCVMoU1JDX1NFTkRfQ0FQQUJJTElUSUVTKSwJCVwKPiArCVMoU1JDX1NFTkRfQ0FQ QUJJTElUSUVTX1RJTUVPVVQpLAlcCj4gIAlTKFNSQ19ORUdPVElBVEVfQ0FQQUJJTElUSUVTKSwJ CVwKPiAgCVMoU1JDX1RSQU5TSVRJT05fU1VQUExZKSwJCVwKPiAgCVMoU1JDX1JFQURZKSwJCQkJ XAo+IEBAIC0yOTY2LDEwICsyOTY3LDM0IEBAIHN0YXRpYyB2b2lkIHJ1bl9zdGF0ZV9tYWNoaW5l KHN0cnVjdCB0Y3BtX3BvcnQgKnBvcnQpCj4gIAkJCS8qIHBvcnQtPmhhcmRfcmVzZXRfY291bnQg PSAwOyAqLwo+ICAJCQlwb3J0LT5jYXBzX2NvdW50ID0gMDsKPiAgCQkJcG9ydC0+cGRfY2FwYWJs ZSA9IHRydWU7Cj4gLQkJCXRjcG1fc2V0X3N0YXRlX2NvbmQocG9ydCwgaGFyZF9yZXNldF9zdGF0 ZShwb3J0KSwKPiArCQkJdGNwbV9zZXRfc3RhdGVfY29uZChwb3J0LCBTUkNfU0VORF9DQVBBQklM SVRJRVNfVElNRU9VVCwKPiAgCQkJCQkgICAgUERfVF9TRU5EX1NPVVJDRV9DQVApOwo+ICAJCX0K PiAgCQlicmVhazsKPiArCWNhc2UgU1JDX1NFTkRfQ0FQQUJJTElUSUVTX1RJTUVPVVQ6Cj4gKwkJ LyoKPiArCQkgKiBFcnJvciByZWNvdmVyeSBmb3IgYSBQRF9EQVRBX1NPVVJDRV9DQVAgcmVwbHkg dGltZW91dC4KPiArCQkgKgo+ICsJCSAqIFBEIDIuMCBzaW5rcyBhcmUgc3VwcG9zZWQgdG8gYWNj ZXB0IHNyYy1jYXBhYmlsaXRpZXMgd2l0aCBhCj4gKwkJICogMy4wIGhlYWRlciBhbmQgc2ltcGx5 IGlnbm9yZSBhbnkgc3JjIFBET3Mgd2hpY2ggdGhlIHNpbmsgZG9lcwo+ICsJCSAqIG5vdCB1bmRl cnN0YW5kIHN1Y2ggYXMgUFBTIGJ1dCBzb21lIDIuMCBzaW5rcyBpbnN0ZWFkIGlnbm9yZQo+ICsJ CSAqIHRoZSBlbnRpcmUgUERfREFUQV9TT1VSQ0VfQ0FQIG1lc3NhZ2UsIGNhdXNpbmcgY29udHJh Y3QKPiArCQkgKiBuZWdvdGlhdGlvbiB0byBmYWlsLgo+ICsJCSAqCj4gKwkJICogQWZ0ZXIgUERf Tl9IQVJEX1JFU0VUX0NPVU5UIGhhcmQtcmVzZXQgYXR0ZW1wdHMsIHdlIHRyeQo+ICsJCSAqIHNl bmRpbmcgc3JjLWNhcGFiaWxpdGllcyB3aXRoIGEgbG93ZXIgUEQgcmV2aXNpb24gdG8KPiArCQkg KiBtYWtlIHRoZXNlIGJyb2tlbiBzaW5rcyB3b3JrLgo+ICsJCSAqLwo+ICsJCWlmIChwb3J0LT5o YXJkX3Jlc2V0X2NvdW50IDwgUERfTl9IQVJEX1JFU0VUX0NPVU5UKSB7Cj4gKwkJCXRjcG1fc2V0 X3N0YXRlKHBvcnQsIEhBUkRfUkVTRVRfU0VORCwgMCk7Cj4gKwkJfSBlbHNlIGlmIChwb3J0LT5u ZWdvdGlhdGVkX3JldiA+IFBEX1JFVjIwKSB7Cj4gKwkJCXBvcnQtPm5lZ290aWF0ZWRfcmV2LS07 Cj4gKwkJCXBvcnQtPmhhcmRfcmVzZXRfY291bnQgPSAwOwo+ICsJCQl0Y3BtX3NldF9zdGF0ZShw b3J0LCBTUkNfU0VORF9DQVBBQklMSVRJRVMsIDApOwo+ICsJCX0gZWxzZSB7Cj4gKwkJCXRjcG1f c2V0X3N0YXRlKHBvcnQsIGhhcmRfcmVzZXRfc3RhdGUocG9ydCksIDApOwo+ICsJCX0KPiArCQli cmVhazsKPiAgCWNhc2UgU1JDX05FR09USUFURV9DQVBBQklMSVRJRVM6Cj4gIAkJcmV0ID0gdGNw bV9wZF9jaGVja19yZXF1ZXN0KHBvcnQpOwo+ICAJCWlmIChyZXQgPCAwKSB7Cj4gLS0gCj4gMi4y MC4xCj4K