From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH v2] drm/i915: Try EDID bitbanging on HDMI after failed read Date: Tue, 9 Jan 2018 10:06:02 +0100 Message-ID: <20180109090602.GD26573@phenom.ffwll.local> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wm0-x242.google.com (mail-wm0-x242.google.com [IPv6:2a00:1450:400c:c09::242]) by gabe.freedesktop.org (Postfix) with ESMTPS id A52A96E0E1 for ; Tue, 9 Jan 2018 09:06:06 +0000 (UTC) Received: by mail-wm0-x242.google.com with SMTP id t8so18841084wmc.3 for ; Tue, 09 Jan 2018 01:06:06 -0800 (PST) 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, Rodrigo Vivi List-Id: intel-gfx@lists.freedesktop.org T24gU3VuLCBEZWMgMzEsIDIwMTcgYXQgMTE6MzQ6NTRQTSArMDEwMCwgU3RlZmFuIEJyw7xucyB3 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/aWQ9OTI2ODUKPiAKPiBTaWduZWQtb2Zm LWJ5OiBTdGVmYW4gQnLDvG5zIDxzdGVmYW4uYnJ1ZW5zQHJ3dGgtYWFjaGVuLmRlPgo+IAo+IC0t LQo+IAo+IENoYW5nZXMgaW4gdjI6Cj4gLSBGaXgvZW5oYW5jZSBjb21taXQgbWVzc2FnZSwgbm8g Y29kZSBjaGFuZ2VzCgpPaywgZm91bmQgdjIsIG1lcmdlZCB0aGlzIG9uZSBpbnN0ZWFkLgotRGFu aWVsCgo+IAo+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZG1pLmMgfCAxNCArKysrKysr KysrKy0tLQo+ICAxIGZpbGUgY2hhbmdlZCwgMTEgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMo LSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRtaS5jIGIv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRtaS5jCj4gaW5kZXggNGRlYTgzM2Y5ZDFiLi44 NDdjZGE0YzAxN2MgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRt aS5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRtaS5jCj4gQEAgLTE1NzMs MTIgKzE1NzMsMjAgQEAgaW50ZWxfaGRtaV9zZXRfZWRpZChzdHJ1Y3QgZHJtX2Nvbm5lY3RvciAq Y29ubmVjdG9yKQo+ICAJc3RydWN0IGludGVsX2hkbWkgKmludGVsX2hkbWkgPSBpbnRlbF9hdHRh Y2hlZF9oZG1pKGNvbm5lY3Rvcik7Cj4gIAlzdHJ1Y3QgZWRpZCAqZWRpZDsKPiAgCWJvb2wgY29u bmVjdGVkID0gZmFsc2U7Cj4gKwlzdHJ1Y3QgaTJjX2FkYXB0ZXIgKmkyYzsKPiAgCj4gIAlpbnRl bF9kaXNwbGF5X3Bvd2VyX2dldChkZXZfcHJpdiwgUE9XRVJfRE9NQUlOX0dNQlVTKTsKPiAgCj4g LQllZGlkID0gZHJtX2dldF9lZGlkKGNvbm5lY3RvciwKPiAtCQkJICAgIGludGVsX2dtYnVzX2dl dF9hZGFwdGVyKGRldl9wcml2LAo+IC0JCQkgICAgaW50ZWxfaGRtaS0+ZGRjX2J1cykpOwo+ICsJ aTJjID0gaW50ZWxfZ21idXNfZ2V0X2FkYXB0ZXIoZGV2X3ByaXYsIGludGVsX2hkbWktPmRkY19i dXMpOwo+ICsKPiArCWVkaWQgPSBkcm1fZ2V0X2VkaWQoY29ubmVjdG9yLCBpMmMpOwo+ICsKPiAr CWlmICghZWRpZCAmJiAhaW50ZWxfZ21idXNfaXNfZm9yY2VkX2JpdChpMmMpKSB7Cj4gKwkJRFJN X0RFQlVHX0tNUygiSERNSSBHTUJVUyBFRElEIHJlYWQgZmFpbGVkLCByZXRyeSB1c2luZyBHUElP IGJpdC1iYW5naW5nXG4iKTsKPiArCQlpbnRlbF9nbWJ1c19mb3JjZV9iaXQoaTJjLCB0cnVlKTsK PiArCQllZGlkID0gZHJtX2dldF9lZGlkKGNvbm5lY3RvciwgaTJjKTsKPiArCQlpbnRlbF9nbWJ1 c19mb3JjZV9iaXQoaTJjLCBmYWxzZSk7Cj4gKwl9Cj4gIAo+ICAJaW50ZWxfaGRtaV9kcF9kdWFs X21vZGVfZGV0ZWN0KGNvbm5lY3RvciwgZWRpZCAhPSBOVUxMKTsKPiAgCj4gLS0gCj4gMi4xNS4x Cj4gCj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KPiBk cmktZGV2ZWwgbWFpbGluZyBsaXN0Cj4gZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwo+ IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVs CgotLSAKRGFuaWVsIFZldHRlcgpTb2Z0d2FyZSBFbmdpbmVlciwgSW50ZWwgQ29ycG9yYXRpb24K aHR0cDovL2Jsb2cuZmZ3bGwuY2gKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRl c2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8v aW50ZWwtZ2Z4Cg==