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: Heikki Krogerus Message-Id: <20190319133602.GU7752@kuha.fi.intel.com> Date: Tue, 19 Mar 2019 15:36:02 +0200 To: Hans de Goede Cc: Greg Kroah-Hartman , Guenter Roeck , linux-usb@vger.kernel.org List-ID: T24gU2F0LCBNYXIgMTYsIDIwMTkgYXQgMDQ6NTc6MTJQTSArMDEwMCwgSGFucyBkZSBHb2VkZSB3 cm90ZToKPiBQRCAyLjAgc2lua3MgYXJlIHN1cHBvc2VkIHRvIGFjY2VwdCBzcmMtY2FwYWJpbGl0 aWVzIHdpdGggYSAzLjAgaGVhZGVyIGFuZAo+IHNpbXBseSBpZ25vcmUgYW55IHNyYyBQRE9zIHdo aWNoIHRoZSBzaW5rIGRvZXMgbm90IHVuZGVyc3RhbmQgc3VjaCBhcyBQUFMKPiBidXQgc29tZSAy LjAgc2lua3MgaW5zdGVhZCBpZ25vcmUgdGhlIGVudGlyZSBQRF9EQVRBX1NPVVJDRV9DQVAgbWVz c2FnZSwKPiBjYXVzaW5nIGNvbnRyYWN0IG5lZ290aWF0aW9uIHRvIGZhaWwuCj4gCj4gVGhpcyBj b21taXQgZml4ZXMgc3VjaCBzaW5rcyBub3Qgd29ya2luZyBieSByZS10cnlpbmcgdGhlIGNvbnRy YWN0Cj4gbmVnb3RpYXRpb24gd2l0aCBQRC0yLjAgc291cmNlLWNhcHMgbWVzc2FnZXMgaWYgd2Ug ZG9uJ3QgaGF2ZSBhIGNvbnRyYWN0Cj4gYWZ0ZXIgUERfTl9IQVJEX1JFU0VUX0NPVU5UIGhhcmQt cmVzZXQgYXR0ZW1wdHMuCj4gCj4gVGhlIHByb2JsZW0gZml4ZWQgYnkgdGhpcyBjb21taXQgd2Fz IG5vdGljZWQgd2l0aCBhIFR5cGUtQyB0byBWR0EgZG9uZ2xlLgo+IAo+IFNpZ25lZC1vZmYtYnk6 IEhhbnMgZGUgR29lZGUgPGhkZWdvZWRlQHJlZGhhdC5jb20+CgpSZXZpZXdlZC1ieTogSGVpa2tp IEtyb2dlcnVzIDxoZWlra2kua3JvZ2VydXNAbGludXguaW50ZWwuY29tPgoKQWxzbyBhcHBsaWVk IHRvIG15IHR5cGVjLW5leHQgYnJhbmNoOgpodHRwczovL2dpdGh1Yi5jb20va3JvaGVpL2xpbnV4 L2NvbW1pdC8zNWU4YzIzZTM5OGFkMDNlN2Q5MjY4YTExYTA0MDhmODY0MmRhNmQwCgo+IC0tLQo+ IFRoZSBUeXBlLUMgdG8gVkdBIGRvbmdsZSBvbiB3aGljaCB0aGlzIGVuY291bnRlcmVkIGxvb2tz IGxpa2UgdGhpcyBvbmU6Cj4gaHR0cHM6Ly93d3cuYWxpZXhwcmVzcy5jb20vaXRlbS9NYWxlLVVT Qi0zLTEtVHlwZS1DLVVTQi1DLXRvLUZlbWFsZS1WR0EtQWRhcHRlci1DYWJsZS0xMEdicHMtZm9y LU5ldy8zMjg5ODI3NDQ3Ni5odG1sCj4gLS0tCj4gQ2hhbmdlcyBpbiB2MjoKPiAtUmVmYWN0b3Ig dGhlIHBhdGNoIHRvIGF2b2lkIGEgY2hlY2sgdnMgdXNlIHJhY2Ugd3J0IG5lZ290aWF0ZWRfcmV2 Cj4gLS0tCj4gIGRyaXZlcnMvdXNiL3R5cGVjL3RjcG0vdGNwbS5jIHwgMjcgKysrKysrKysrKysr KysrKysrKysrKysrKystCj4gIDEgZmlsZSBjaGFuZ2VkLCAyNiBpbnNlcnRpb25zKCspLCAxIGRl bGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNiL3R5cGVjL3RjcG0vdGNwbS5j IGIvZHJpdmVycy91c2IvdHlwZWMvdGNwbS90Y3BtLmMKPiBpbmRleCBmMWMzOWEzYzc1MzQuLmQz NGU5NDVlNWQwOSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL3VzYi90eXBlYy90Y3BtL3RjcG0uYwo+ ICsrKyBiL2RyaXZlcnMvdXNiL3R5cGVjL3RjcG0vdGNwbS5jCj4gQEAgLTM3LDYgKzM3LDcgQEAK PiAgCVMoU1JDX0FUVEFDSEVEKSwJCQlcCj4gIAlTKFNSQ19TVEFSVFVQKSwJCQkJXAo+ICAJUyhT UkNfU0VORF9DQVBBQklMSVRJRVMpLAkJXAo+ICsJUyhTUkNfU0VORF9DQVBBQklMSVRJRVNfVElN RU9VVCksCVwKPiAgCVMoU1JDX05FR09USUFURV9DQVBBQklMSVRJRVMpLAkJXAo+ICAJUyhTUkNf VFJBTlNJVElPTl9TVVBQTFkpLAkJXAo+ICAJUyhTUkNfUkVBRFkpLAkJCQlcCj4gQEAgLTI5NjYs MTAgKzI5NjcsMzQgQEAgc3RhdGljIHZvaWQgcnVuX3N0YXRlX21hY2hpbmUoc3RydWN0IHRjcG1f cG9ydCAqcG9ydCkKPiAgCQkJLyogcG9ydC0+aGFyZF9yZXNldF9jb3VudCA9IDA7ICovCj4gIAkJ CXBvcnQtPmNhcHNfY291bnQgPSAwOwo+ICAJCQlwb3J0LT5wZF9jYXBhYmxlID0gdHJ1ZTsKPiAt CQkJdGNwbV9zZXRfc3RhdGVfY29uZChwb3J0LCBoYXJkX3Jlc2V0X3N0YXRlKHBvcnQpLAo+ICsJ CQl0Y3BtX3NldF9zdGF0ZV9jb25kKHBvcnQsIFNSQ19TRU5EX0NBUEFCSUxJVElFU19USU1FT1VU LAo+ICAJCQkJCSAgICBQRF9UX1NFTkRfU09VUkNFX0NBUCk7Cj4gIAkJfQo+ICAJCWJyZWFrOwo+ ICsJY2FzZSBTUkNfU0VORF9DQVBBQklMSVRJRVNfVElNRU9VVDoKPiArCQkvKgo+ICsJCSAqIEVy cm9yIHJlY292ZXJ5IGZvciBhIFBEX0RBVEFfU09VUkNFX0NBUCByZXBseSB0aW1lb3V0Lgo+ICsJ CSAqCj4gKwkJICogUEQgMi4wIHNpbmtzIGFyZSBzdXBwb3NlZCB0byBhY2NlcHQgc3JjLWNhcGFi aWxpdGllcyB3aXRoIGEKPiArCQkgKiAzLjAgaGVhZGVyIGFuZCBzaW1wbHkgaWdub3JlIGFueSBz cmMgUERPcyB3aGljaCB0aGUgc2luayBkb2VzCj4gKwkJICogbm90IHVuZGVyc3RhbmQgc3VjaCBh cyBQUFMgYnV0IHNvbWUgMi4wIHNpbmtzIGluc3RlYWQgaWdub3JlCj4gKwkJICogdGhlIGVudGly ZSBQRF9EQVRBX1NPVVJDRV9DQVAgbWVzc2FnZSwgY2F1c2luZyBjb250cmFjdAo+ICsJCSAqIG5l Z290aWF0aW9uIHRvIGZhaWwuCj4gKwkJICoKPiArCQkgKiBBZnRlciBQRF9OX0hBUkRfUkVTRVRf Q09VTlQgaGFyZC1yZXNldCBhdHRlbXB0cywgd2UgdHJ5Cj4gKwkJICogc2VuZGluZyBzcmMtY2Fw YWJpbGl0aWVzIHdpdGggYSBsb3dlciBQRCByZXZpc2lvbiB0bwo+ICsJCSAqIG1ha2UgdGhlc2Ug YnJva2VuIHNpbmtzIHdvcmsuCj4gKwkJICovCj4gKwkJaWYgKHBvcnQtPmhhcmRfcmVzZXRfY291 bnQgPCBQRF9OX0hBUkRfUkVTRVRfQ09VTlQpIHsKPiArCQkJdGNwbV9zZXRfc3RhdGUocG9ydCwg SEFSRF9SRVNFVF9TRU5ELCAwKTsKPiArCQl9IGVsc2UgaWYgKHBvcnQtPm5lZ290aWF0ZWRfcmV2 ID4gUERfUkVWMjApIHsKPiArCQkJcG9ydC0+bmVnb3RpYXRlZF9yZXYtLTsKPiArCQkJcG9ydC0+ aGFyZF9yZXNldF9jb3VudCA9IDA7Cj4gKwkJCXRjcG1fc2V0X3N0YXRlKHBvcnQsIFNSQ19TRU5E X0NBUEFCSUxJVElFUywgMCk7Cj4gKwkJfSBlbHNlIHsKPiArCQkJdGNwbV9zZXRfc3RhdGUocG9y dCwgaGFyZF9yZXNldF9zdGF0ZShwb3J0KSwgMCk7Cj4gKwkJfQo+ICsJCWJyZWFrOwo+ICAJY2Fz ZSBTUkNfTkVHT1RJQVRFX0NBUEFCSUxJVElFUzoKPiAgCQlyZXQgPSB0Y3BtX3BkX2NoZWNrX3Jl cXVlc3QocG9ydCk7Cj4gIAkJaWYgKHJldCA8IDApIHsKPiAtLSAKPiAyLjIwLjEKCnRoYW5rcywK