From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Subject: Re: [PATCH v2] drm/i915: Try EDID bitbanging on HDMI after failed read Date: Tue, 2 Jan 2018 11:12:18 -0800 Message-ID: <20180102191218.53beopvnxsg2etmg@intel.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Stefan =?iso-8859-1?Q?Br=FCns?= Cc: David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org T24gU3VuLCBEZWMgMzEsIDIwMTcgYXQgMTA6MzQ6NTRQTSArMDAwMCwgU3RlZmFuIEJyw7xucyB3 cm90ZToKPiBUaGUgQUNLL05BQ0sgaW1wbGVtZW50YXRpb24gYXMgZm91bmQgaW4gZS5nLiB0aGUg Rzk2NSBoYXMgdGhlIGZhbGxpbmcKPiBjbG9jayBlZGdlIGFuZCB0aGUgcmVsZWFzZSBvZiB0aGUg ZGF0YSBsaW5lIGFmdGVyIHRoZSBBQ0sgZm9yIHRoZSByZWNlaXZlZAo+IGJ5dGUgaGFwcGVuIGF0 IHRoZSBzYW1lIHRpbWUuCj4gCj4gVGhpcyBpcyBjb25mb3JtYW50IHdpdGggdGhlIEkyQyBzcGVj aWZpY2F0aW9uLCB3aGljaCBhbGxvd3MgYSB6ZXJvIGhvbGQKPiB0aW1lLCBzZWUgZm9vdG5vdGUg WzNdOiAiQSBkZXZpY2UgbXVzdCBpbnRlcm5hbGx5IHByb3ZpZGUgYSBob2xkIHRpbWUgb2YKPiBh dCBsZWFzdCAzMDAgbnMgZm9yIHRoZSBTREEgc2lnbmFsICh3aXRoIHJlc3BlY3QgdG8gdGhlIFYg SUgobWluKSBvZiB0aGUKPiBTQ0wgc2lnbmFsKSB0byBicmlkZ2UgdGhlIHVuZGVmaW5lZCByZWdp b24gb2YgdGhlIGZhbGxpbmcgZWRnZSBvZiBTQ0wuIgo+IAo+IFNvbWUgSERNSS10by1WR0EgY29u dmVydGVycyBhcHBhcmVudGx5IGZhaWwgdG8gYWRoZXJlIHRvIHRoaXMgcmVxdWlyZW1lbnQKPiBh bmQgbGF0Y2ggU0RBIGF0IHRoZSBmYWxsaW5nIGNsb2NrIGVkZ2UsIHNvIGluc3RlYWQgb2YgYW4g QUNLCj4gc29tZXRpbWVzIGEgTkFDSyBpcyByZWFkIGFuZCB0aGUgc2xhdmUgKGkuZS4gdGhlIEVE SUQgUk9NKSBlbmRzIHRoZQo+IHRyYW5zZmVyLgo+IAo+IFRoZSBiaXRiYW5naW5nIHJlbGVhc2Vz IHRoZSBkYXRhIGxpbmUgZm9yIHRoZSBBQ0sgb25seSAxLzQgYml0IHRpbWUgYWZ0ZXIKPiB0aGUg ZmFsbGluZyBjbG9jayBlZGdlLCBzbyBhIHNsYXZlIHdpbGwgc2VlIHRoZSBjb3JyZWN0IHZhbHVl IG5vIG1hdHRlcgo+IGlmIGl0IHNhbXBsZXMgYXQgdGhlIHJpc2luZyBvciB0aGUgZmFsbGluZyBj bG9jayBlZGdlIG9yIGluIHRoZSBjZW50ZXIuCj4gCj4gRmFsbGJhY2sgdG8gYml0YmFuZ2luZyBp cyBhbHJlYWR5IGRvbmUgZm9yIHRoZSBDUlQgY29ubmVjdG9yLgo+IAo+IEJ1ZzogaHR0cHM6Ly9i dWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9OTI2ODUKCnMvQnVnOi9CdWd6aWxs YToKCkRpZCB3ZSBnZXQgdGhlIGNvbmZpcm1hdGlvbiB0aGF0IHRoaXMgYWxzbyBmaXggdGhlIFNr eWxha2UgaXNzdWUKaW5pdGlhbGx5IHJlcG9ydGVkPwoKPiAKPiBTaWduZWQtb2ZmLWJ5OiBTdGVm YW4gQnLDvG5zIDxzdGVmYW4uYnJ1ZW5zQHJ3dGgtYWFjaGVuLmRlPgo+IAo+IC0tLQo+IAo+IENo YW5nZXMgaW4gdjI6Cj4gLSBGaXgvZW5oYW5jZSBjb21taXQgbWVzc2FnZSwgbm8gY29kZSBjaGFu Z2VzCj4gCj4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkbWkuYyB8IDE0ICsrKysrKysr KysrLS0tCj4gIDEgZmlsZSBjaGFuZ2VkLCAxMSBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygt KQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMgYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMKPiBpbmRleCA0ZGVhODMzZjlkMWIuLjg0 N2NkYTRjMDE3YyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1p LmMKPiArKysgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMKPiBAQCAtMTU3Mywx MiArMTU3MywyMCBAQCBpbnRlbF9oZG1pX3NldF9lZGlkKHN0cnVjdCBkcm1fY29ubmVjdG9yICpj b25uZWN0b3IpCj4gIAlzdHJ1Y3QgaW50ZWxfaGRtaSAqaW50ZWxfaGRtaSA9IGludGVsX2F0dGFj aGVkX2hkbWkoY29ubmVjdG9yKTsKPiAgCXN0cnVjdCBlZGlkICplZGlkOwo+ICAJYm9vbCBjb25u ZWN0ZWQgPSBmYWxzZTsKPiArCXN0cnVjdCBpMmNfYWRhcHRlciAqaTJjOwo+ICAKPiAgCWludGVs X2Rpc3BsYXlfcG93ZXJfZ2V0KGRldl9wcml2LCBQT1dFUl9ET01BSU5fR01CVVMpOwo+ICAKPiAt CWVkaWQgPSBkcm1fZ2V0X2VkaWQoY29ubmVjdG9yLAo+IC0JCQkgICAgaW50ZWxfZ21idXNfZ2V0 X2FkYXB0ZXIoZGV2X3ByaXYsCj4gLQkJCSAgICBpbnRlbF9oZG1pLT5kZGNfYnVzKSk7Cj4gKwlp MmMgPSBpbnRlbF9nbWJ1c19nZXRfYWRhcHRlcihkZXZfcHJpdiwgaW50ZWxfaGRtaS0+ZGRjX2J1 cyk7Cj4gKwo+ICsJZWRpZCA9IGRybV9nZXRfZWRpZChjb25uZWN0b3IsIGkyYyk7Cj4gKwo+ICsJ aWYgKCFlZGlkICYmICFpbnRlbF9nbWJ1c19pc19mb3JjZWRfYml0KGkyYykpIHsKPiArCQlEUk1f REVCVUdfS01TKCJIRE1JIEdNQlVTIEVESUQgcmVhZCBmYWlsZWQsIHJldHJ5IHVzaW5nIEdQSU8g Yml0LWJhbmdpbmdcbiIpOwo+ICsJCWludGVsX2dtYnVzX2ZvcmNlX2JpdChpMmMsIHRydWUpOwo+ ICsJCWVkaWQgPSBkcm1fZ2V0X2VkaWQoY29ubmVjdG9yLCBpMmMpOwo+ICsJCWludGVsX2dtYnVz X2ZvcmNlX2JpdChpMmMsIGZhbHNlKTsKPiArCX0KCkFwcHJvYWNoIHNlZW1zIGZpbmUgZm9yIHRo aXMgY2FzZS4KSSBqdXN0IHdvbmRlciB3aGF0IHdvdWxkIGJlIHRoZSByaXNrcyBvZiBmb3JjaW5n IHRoaXMgYml0IGFuZCBlZGlkIHJlYWQgd2hlbiBub3RoaW5nIGlzIHByZXNlbnQgb24gdGhlIG90 aGVyIGVuZD8KCj4gIAo+ICAJaW50ZWxfaGRtaV9kcF9kdWFsX21vZGVfZGV0ZWN0KGNvbm5lY3Rv ciwgZWRpZCAhPSBOVUxMKTsKPiAgCj4gLS0gCj4gMi4xNS4xCj4gCj4gX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KPiBkcmktZGV2ZWwgbWFpbGluZyBsaXN0 Cj4gZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwo+IGh0dHBzOi8vbGlzdHMuZnJlZWRl c2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCl9fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwt Z2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=