From mboxrd@z Thu Jan 1 00:00:00 1970 From: Archit Taneja Subject: Re: PROBLEM: Asus C201 video mode problems on HDMI hotplug (regression) Date: Mon, 27 Nov 2017 09:35:03 +0530 Message-ID: <269ce21a-3685-30e8-fcc8-65070bc59eea@codeaurora.org> References: <20171116062811.g27zgeejizfxu6oc@aura.draconx.ca> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9F8746E1E6 for ; Mon, 27 Nov 2017 04:05:13 +0000 (UTC) In-Reply-To: <20171116062811.g27zgeejizfxu6oc@aura.draconx.ca> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Nick Bowler , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Laurent Pinchart Cc: Dave Airlie , Linus Torvalds List-Id: dri-devel@lists.freedesktop.org SGksCgpPbiAxMS8xNi8yMDE3IDExOjU4IEFNLCBOaWNrIEJvd2xlciB3cm90ZToKPiBIaSwKPiAK PiBBbnkgaWRlYXMgb24gdGhpcyBpc3N1ZT8gIEFyZSB0aGVyZSBhbnkgYWRkaXRpb25hbCB0ZXN0 cyBJIGNhbiBwZXJmb3JtCj4gdG8gaGVscCBkZWJ1ZyB0aGlzPwo+IAo+IE9uIDIwMTctMTEtMDUg MTE6NDEgLTA1MDAsIE5pY2sgQm93bGVyIHdyb3RlOgo+PiBJIGNvbXBsZXRlZCBiaXNlY3Rpbmcg dGhpcyBpc3N1ZS4gIFNlZSBiZWxvdy4KPj4KPj4gT24gMjAxNy0xMS0wMiwgTmljayBCb3dsZXIg PG5ib3dsZXJAZHJhY29ueC5jYT4gd3JvdGU6Cj4+PiB+NTAlIG9mIHRoZSB0aW1lIGFmdGVyIGEg aG90cGx1ZywgdGhlcmUgaXMgYSB2ZXJ0aWNhbCBwaW5rIGJhciBvbiB0aGUKPj4+IGxlZnQgb2Yg dGhlIGRpc3BsYXkgYXJlYSBhbmQgYXVkaW8gaXMgbm90IHdvcmtpbmcgYXQgYWxsLiAgQWNjb3Jk aW5nIHRvCj4+PiB0aGUgc2luayBkZXZpY2UgdGhlIGRpc3BsYXkgc2l6ZSBpcyAxMjgyeDcyMCB3 aGljaCBzZWVtcyBwcmV0dHkgd3JvbmcKPj4+IChub3JtYWwgYW5kIHdvcmtpbmcgc2l0dWF0aW9u IGlzIDEyODB4NzIwKS4KPj4+Cj4+PiBJIHBvc3RlZCBwaG90b3Mgb2Ygbm9uLXdvcmtpbmcgdmVy c3VzIHdvcmtpbmcgc3RhdGVzIGhlcmU6Cj4+Pgo+Pj4gICAgaHR0cHM6Ly9pbWd1ci5jb20vYS9x aEFaRwo+Pj4KPj4+IFVucGx1Z2dpbmcgYW5kIHBsdWdnaW5nIHRoZSBjYWJsZSBhZ2FpbiB3aWxs IGNvcnJlY3QgdGhlIGlzc3VlIChpdCBzZWVtcwo+Pj4gdG8sIGZvciB0aGUgbW9zdCBwYXJ0LCBh bHRlcm5hdGUgYmV0d2VlbiB3b3JraW5nIGFuZCBub3Qtd29ya2luZyBzdGF0ZXMsCj4+PiBhbHRo b3VnaCBub3QgYWx3YXlzKS4gIEl0IGFsd2F5cyB3b3JrcyBvbiBwb3dlciB1cCB3aXRoIHRoZSBj YWJsZSBpbml0aWFsbHkKPj4+IGNvbm5lY3RlZC4KPj4+Cj4+PiBUaGlzIGlzIGEgcmVncmVzc2lv biBmcm9tIDQuMTEsIHdoZXJlIGhvdHBsdWcgd29ya3MgcGVyZmVjdGx5IGV2ZXJ5IHRpbWUuCj4+ Cj4+IEJpc2VjdGlvbiBpbXBsaWNhdGVzIHRoZSBmb2xsb3dpbmcgY29tbWl0Ogo+Pgo+PiAxODFl MGVmMDkyYTQ5NTJhYTUyM2M1YjljYjIxMzk0Y2Y0M2JjZDQ2IGlzIHRoZSBmaXJzdCBiYWQgY29t bWl0Cj4+IGNvbW1pdCAxODFlMGVmMDkyYTQ5NTJhYTUyM2M1YjljYjIxMzk0Y2Y0M2JjZDQ2Cj4+ IEF1dGhvcjogTGF1cmVudCBQaW5jaGFydCA8bGF1cmVudC5waW5jaGFydCtyZW5lc2FzQGlkZWFz b25ib2FyZC5jb20+Cj4+IERhdGU6ICAgTW9uIE1hciA2IDAxOjM1OjU3IDIwMTcgKzAyMDAKPj4K Pj4gICAgICBkcm06IGJyaWRnZTogZHctaGRtaTogRml4IHRoZSBQSFkgcG93ZXIgdXAgc2VxdWVu Y2UKPj4KPj4gICAgICBXaGVuIHBvd2VyaW5nIHRoZSBQSFkgdXAgd2UgbmVlZCB0byB3YWl0IGZv ciB0aGUgUExMIHRvIGxvY2suIFRoaXMgaXMKPj4gICAgICBkb25lIGJ5IHBvbGxpbmcgdGhlIFRY X1BIWV9MT0NLIGJpdCBpbiB0aGUgSERNSV9QSFlfU1RBVDAgcmVnaXN0ZXIKPj4gICAgICAoaW50 ZXJydXB0LWJhc2VkIHdhaXQgY291bGQgYmUgaW1wbGVtZW50ZWQgYXMgd2VsbCBidXQgaXMgbGlr ZWx5Cj4+ICAgICAgb3ZlcmtpbGwpLiBUaGUgYml0IGlzIGFzc2VydGVkIHdoZW4gdGhlIFBMTCBs b2NrcywgYnV0IHRoZSBjdXJyZW50IGNvZGUKPj4gICAgICBpbmNvcnJlY3RseSB3YWl0cyBmb3Ig dGhlIGJpdCB0byBiZSBkZWFzc2VydGVkLiBGaXggaXQsIGFuZCB3aGlsZSBhdCBpdCwKPj4gICAg ICByZXBsYWNlIHRoZSB1ZGVsYXkoKSB3aXRoIGEgc2xlZXAgYXMgdGhlIGNvZGUgbmV2ZXIgcnVu cyBpbgo+PiAgICAgIG5vbi1zbGVlcGFibGUgY29udGV4dC4KPj4KPj4gICAgICBUbyBiZSBjb25z aXN0ZW50IHdpdGggdGhlIHBvd2VyIGRvd24gaW1wbGVtZW50YXRpb24gbW92ZSB0aGUgcG9sbCBs b29wCj4+ICAgICAgdG8gdGhlIHBvd2VyIG9mZiBmdW5jdGlvbi4KClRoZSB0d28gbWFpbiB0aGlu Z3MgdGhlIGNvbW1pdCBiZWxvdyBkb2VzIGl0IHRvIGEpIGNvcnJlY3RseSB3YWl0IG9uIHRoZQpU WF9QSFlfTE9DSyBiaXQgdG8gYmUgYXNzZXJ0ZWQgYW5kIGIpIHVzZSB1c2xlZXBfcmFuZ2UoKSBp bnN0ZWFkIG9mIHVkZWxheSgpLgoKSSBkb24ndCBzZWUgKGIpIGJlaW5nIGEgcHJvYmxlbS4gQWJv dXQgKGEpLCBpdCdzIHBvc3NpYmxlIHRoYXQgdGhlIGJpdCBhYm92ZQppcyBpbnRlcnByZXRlZCBk aWZmZXJlbnRseSBvbiBhIHJvY2tjaGlwIFNvQyB2ZXJzdXMgYSByZW5lc2FzIGNoaXAuIENvdWxk IHlvdQpwcmludCB0aGUgdmFsdWUgb2YgSERNSV9QSFlfU1RBVDAgdGhhdCdzIHJlYWQgYmFjaz8K CklmIHRoZSBjb2RlIHJldHVybnMgYW4gLUVUSU1FRE9VVCwgaGRtaS0+cGh5Lm9wcy0+aW5pdCgp IHdpbGwgcmV0dXJuIGFuIC1FVElNRURPVVQuClRoaXMgd2lsbCBjYXVzZSBkd19oZG1pX3NldHVw KCkgdG8gYmFpbCBvdXQgZWFybHksIGJlZm9yZSB3ZSBnZXQgYSBjaGFuY2UgdG8KY29uZmlndXJl IHRoZSBBVkkgaW5mb2ZyYW1lIGFuZCBvdGhlciBzdHVmZi4gSSd2ZSBzZWVuIG90aGVyIEhETUkg SFcgdGhyb3dpbmcgdXAgcGluawpzdHJpcHMgaWYgdGhlIEFWSSBpbmZvZnJhbWUgc3R1ZmYgaXNu J3QgY29uZmlndXJlZCBwcm9wZXJseS4KCkFzIGFuIGV4cGVyaW1lbnQsIGNvdWxkIHlvdSBmb3Jj ZWZ1bGx5IHJldHVybiAwIGluc3RlYWQgb2YgLUVUSU1FRE9VVCBhbmQgc2VlIGlmIHRoaW5ncwpy ZXR1cm4gYmFjayB0byBub3JtYWw/CgpUaGFua3MsCkFyY2hpdAoKCj4+Cj4+ICAgICAgU2lnbmVk LW9mZi1ieTogTGF1cmVudCBQaW5jaGFydCA8bGF1cmVudC5waW5jaGFydCtyZW5lc2FzQGlkZWFz b25ib2FyZC5jb20+Cj4+ICAgICAgVGVzdGVkLWJ5OiBOZWlsIEFybXN0cm9uZyA8bmFybXN0cm9u Z0BiYXlsaWJyZS5jb20+Cj4+ICAgICAgUmV2aWV3ZWQtYnk6IEpvc2UgQWJyZXUgPGpvYWJyZXVA c3lub3BzeXMuY29tPgo+PiAgICAgIFNpZ25lZC1vZmYtYnk6IEFyY2hpdCBUYW5lamEgPGFyY2hp dHRAY29kZWF1cm9yYS5vcmc+Cj4+ICAgICAgTGluazogaHR0cDovL3BhdGNod29yay5mcmVlZGVz a3RvcC5vcmcvcGF0Y2gvbXNnaWQvMjAxNzAzMDUyMzM1NTcuMTE5NDUtMS1sYXVyZW50LnBpbmNo YXJ0K3JlbmVzYXNAaWRlYXNvbmJvYXJkLmNvbQo+Pgo+PiA6MDQwMDAwIDA0MDAwMCAwZGVmYWQ5 ZDFhNjFjMDM1NWY0OWM2NzliMThlZWJhZTJjNGI5NDk1Cj4+IDVkMjYwZTZkYjI1ZDZhYmMxMjEx ZDYxZWMzNDA1YmU5OWU2OTNhMjMgTQlkcml2ZXJzCj4+Cj4+IFRoaXMgY29tbWl0IGRvZXMgbm90 IHJldmVydCBjbGVhbmx5LCBidXQgb24gdG9wIG9mIGxhdGVzdCBtYXN0ZXIgKHdoaWNoIGhhcwo+ PiB0aGUgcHJvYmxlbSkgSSBtYW51YWxseSBjaGFuZ2VkIHRoZSByZWxldmFudCBjb2RlIGJhY2sg dG8gaXRzIG9yaWdpbmFsIHN0YXRlCj4+IGFuZCB0aGUgcHJvYmxlbSBpcyBmaXhlZCwgbGlrZSB0 aGlzOgo+Pgo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2JyaWRnZS9zeW5vcHN5cy9k dy1oZG1pLmMKPj4gYi9kcml2ZXJzL2dwdS9kcm0vYnJpZGdlL3N5bm9wc3lzL2R3LWhkbWkuYwo+ PiBpbmRleCBiZjE0MjE0ZmE0NjQuLjY2MThhYWM5NWE1MSAxMDA2NDQKPj4gLS0tIGEvZHJpdmVy cy9ncHUvZHJtL2JyaWRnZS9zeW5vcHN5cy9kdy1oZG1pLmMKPj4gKysrIGIvZHJpdmVycy9ncHUv ZHJtL2JyaWRnZS9zeW5vcHN5cy9kdy1oZG1pLmMKPj4gQEAgLTExMDAsMzcgKzExMDAsMzQgQEAg c3RhdGljIHZvaWQgZHdfaGRtaV9waHlfcG93ZXJfb2ZmKHN0cnVjdCBkd19oZG1pICpoZG1pKQo+ Pgo+PiAgIHN0YXRpYyBpbnQgZHdfaGRtaV9waHlfcG93ZXJfb24oc3RydWN0IGR3X2hkbWkgKmhk bWkpCj4+ICAgewo+PiAtCWNvbnN0IHN0cnVjdCBkd19oZG1pX3BoeV9kYXRhICpwaHkgPSBoZG1p LT5waHkuZGF0YTsKPj4gLQl1bnNpZ25lZCBpbnQgaTsKPj4gLQl1OCB2YWw7Cj4+ICsJdTggdmFs LCBtc2VjOwo+Pgo+PiAtCWlmIChwaHktPmdlbiA9PSAxKSB7Cj4+IC0JCWR3X2hkbWlfcGh5X2Vu YWJsZV9wb3dlcmRvd24oaGRtaSwgZmFsc2UpOwo+PiArCWR3X2hkbWlfcGh5X2VuYWJsZV9wb3dl cmRvd24oaGRtaSwgZmFsc2UpOwo+Pgo+PiAtCQkvKiBUb2dnbGUgVE1EUyBlbmFibGUuICovCj4+ IC0JCWR3X2hkbWlfcGh5X2VuYWJsZV90bWRzKGhkbWksIDApOwo+PiAtCQlkd19oZG1pX3BoeV9l bmFibGVfdG1kcyhoZG1pLCAxKTsKPj4gLQkJcmV0dXJuIDA7Cj4+IC0JfQo+PiArCS8qIHRvZ2ds ZSBUTURTIGVuYWJsZSAqLwo+PiArCWR3X2hkbWlfcGh5X2VuYWJsZV90bWRzKGhkbWksIDApOwo+ PiArCWR3X2hkbWlfcGh5X2VuYWJsZV90bWRzKGhkbWksIDEpOwo+Pgo+PiArCS8qIGdlbjIgdHgg cG93ZXIgb24gKi8KPj4gICAJZHdfaGRtaV9waHlfZ2VuMl90eHB3cm9uKGhkbWksIDEpOwo+PiAg IAlkd19oZG1pX3BoeV9nZW4yX3BkZHEoaGRtaSwgMCk7Cj4+Cj4+ICAgCS8qIFdhaXQgZm9yIFBI WSBQTEwgbG9jayAqLwo+PiAtCWZvciAoaSA9IDA7IGkgPCA1OyArK2kpIHsKPj4gKwltc2VjID0g NTsKPj4gKwlkbyB7Cj4+ICAgCQl2YWwgPSBoZG1pX3JlYWRiKGhkbWksIEhETUlfUEhZX1NUQVQw KSAmIEhETUlfUEhZX1RYX1BIWV9MT0NLOwo+PiAtCQlpZiAodmFsKQo+PiArCQlpZiAoIXZhbCkK Pj4gICAJCQlicmVhazsKPj4KPj4gLQkJdXNsZWVwX3JhbmdlKDEwMDAsIDIwMDApOwo+PiAtCX0K Pj4gKwkJaWYgKG1zZWMgPT0gMCkgewo+PiArCQkJZGV2X2VycihoZG1pLT5kZXYsICJQSFkgUExM IG5vdCBsb2NrZWRcbiIpOwo+PiArCQkJcmV0dXJuIC1FVElNRURPVVQ7Cj4+ICsJCX0KPj4KPj4g LQlpZiAoIXZhbCkgewo+PiAtCQlkZXZfZXJyKGhkbWktPmRldiwgIlBIWSBQTEwgZmFpbGVkIHRv IGxvY2tcbiIpOwo+PiAtCQlyZXR1cm4gLUVUSU1FRE9VVDsKPj4gLQl9Cj4+ICsJCXVkZWxheSgx MDAwKTsKPj4gKwkJbXNlYy0tOwo+PiArCX0gd2hpbGUgKDEpOwo+Pgo+PiAtCWRldl9kYmcoaGRt aS0+ZGV2LCAiUEhZIFBMTCBsb2NrZWQgJXUgaXRlcmF0aW9uc1xuIiwgaSk7Cj4+ICAgCXJldHVy biAwOwo+PiAgIH0KPj4KPiAKPiBUaGFua3MsCj4gICAgTmljawo+IAoKLS0gClF1YWxjb21tIElu bm92YXRpb24gQ2VudGVyLCBJbmMuIGlzIGEgbWVtYmVyIG9mIENvZGUgQXVyb3JhIEZvcnVtLAph IExpbnV4IEZvdW5kYXRpb24gQ29sbGFib3JhdGl2ZSBQcm9qZWN0Cl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJp LWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=