From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Kahola Subject: Re: [PATCH] drm/i915: Wait for vblank after register read Date: Thu, 19 Apr 2018 10:03:05 +0300 Message-ID: <1524121385.16539.22.camel@intel.com> References: <1524038216-22142-1-git-send-email-mika.kahola@intel.com> Reply-To: mika.kahola@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id E64256E260 for ; Thu, 19 Apr 2018 07:03:07 +0000 (UTC) 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: "Lofstedt, Marta" , "intel-gfx@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCAyMDE4LTA0LTE5IGF0IDA5OjExICswMzAwLCBMb2ZzdGVkdCwgTWFydGEgd3JvdGU6 Cj4gRm9yIHRoZSBQVyByZXN1bHRzOsKgCj4gaHR0cHM6Ly9wYXRjaHdvcmsuZnJlZWRlc2t0b3Au b3JnL3Nlcmllcy80MTg3Ny8KPiAKPiBpdCBkaWRuJ3QgZml4IHRoZSBDUkMgbWlzbWF0Y2ggb246 Cj4gwqBodHRwczovL2ludGVsLWdmeC1jaS4wMS5vcmcvdHJlZS9kcm0tdGlwL1BhdGNod29ya184 NzMxL3NoYXJkLQo+IHNuYjYvaWd0QGttc19mcm9udGJ1ZmZlcl90cmFja2luZ0BmYmMtMXAtcHJp LWluZGZiLW11bHRpZHJhdy5odG1sClRoaXMgd2FzIGV4cGVjdGVkIHRoYXQgcmVtb3Zpbmcgb25l IHZibGFuayBkb2Vzbid0IGZpeCBoYXZlIGFuIGVmZmVjdApvbiBjcmMgbWlzbWF0Y2hlcy4gVGhl cmVzIHNvbWV0aGluZyBtb3JlIGluIHRoaXMgaXNzdWUuCgo+IAo+IGJ1dCB0aGF0IHRlc3QgaGFz IGFsd2F5cyBmYWlsZWQgb24gU05COsKgCj4gaHR0cDovL2dmeC1jaS5maS5pbnRlbC5jb20vY2li dWdsb2cvP2FjdGlvbl9mYWlsdXJlc19oaXN0b3J5PS0xJmZhaWx1Cj4gcmVzX3Rlc3Q9aWd0QGtt c19mcm9udGJ1ZmZlcl90cmFja2luZ0BmYmMtMXAtcHJpLWluZGZiLQo+IG11bHRpZHJhdyZmYWls dXJlc19tYWNoaW5lPXNoYXJkLXNuYgo+IAo+IHNvIEkgZG9uJ3QgdGhpbmsgeW91IGJyYWtlIGFu eXRoaW5nIHdpdGggdGhpcyBwYXRjaC4KPiAKPiBNaWthLCBkbyB5b3Uga25vdyBpZiB3YWl0aW5n IGZvciB0aGUgZXh0cmEgdmJsYW5rIHdhcyBkb25lIHdpdGggc29tZQo+IHB1cnBvc2U/ClRoYXQg SSBkb24ndCBrbm93IGlmIGl0IHdhcyBpbnRlbnRpb25hbC4gSSdsbCB0cnkgdG8gZmluZCBvdXQg d2h5IGl0CndhcyBuZWVkZWQuCgo+IAo+IAo+ID4gCj4gPiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2Ut LS0tLQo+ID4gRnJvbTogSW50ZWwtZ2Z4IFttYWlsdG86aW50ZWwtZ2Z4LWJvdW5jZXNAbGlzdHMu ZnJlZWRlc2t0b3Aub3JnXSBPbgo+ID4gQmVoYWxmCj4gPiBPZiBNaWthIEthaG9sYQo+ID4gU2Vu dDogV2VkbmVzZGF5LCBBcHJpbCAxOCwgMjAxOCAxMDo1NyBBTQo+ID4gVG86IGludGVsLWdmeEBs aXN0cy5mcmVlZGVza3RvcC5vcmcKPiA+IFN1YmplY3Q6IFtJbnRlbC1nZnhdIFtQQVRDSF0gZHJt L2k5MTU6IFdhaXQgZm9yIHZibGFuayBhZnRlcgo+ID4gcmVnaXN0ZXIgcmVhZAo+ID4gCj4gPiBX aGVuIHJlYWRpbmcgb3V0IENSQydzIHdlwqDCoHdhaXQgZm9yIGEgdmJsYW5rIG9uCj4gPiBpbnRl bF9kcF9zaW5rX2NyY19zdGFydCgpCj4gPiBmdW5jdGlvbi4gV2hlbiB3ZSBzdGFydCByZWFkaW5n IG91dCBDUkMncyBpbiBpbnRlbF9kcF9zaW5rX2NyYygpCj4gPiBsb29wIHdlCj4gPiBmaXJzdCB3 YWl0IGZvciBhIHZibGFuayB5aWVsZGluZyB0aGF0IGFsbCBpbiBhbGwgd2UgZW5kIHVwIHdhaXRp bmcKPiA+IHR3byB2YmxhbmtzIG9uCj4gPiB0aGUgZmlyc3QgaXRlcmF0aW9uIHJvdW5kLiBUaGVy ZWZvcmUsIGxldCdzIG1vdmUgdGhlCj4gPiBpbnRlbF93YWl0X2Zvcl92YmxhbmsoKSBhcyB0aGUg bGFzdCByb3V0aW5lIHRoYXQgd2UgZG8gaW4gYW4KPiA+IGl0ZXJhdGlvbiBsb29wIGluCj4gPiBp bnRlbF9kcF9zaW5rX2NyYygpLgo+ID4gCj4gPiBCdWd6aWxsYTogaHR0cHM6Ly9idWdzLmZyZWVk ZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTAzMTY2Cj4gPiBTaWduZWQtb2ZmLWJ5OiBNaWth IEthaG9sYSA8bWlrYS5rYWhvbGFAaW50ZWwuY29tPgo+ID4gLS0tCj4gPiDCoGRyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX2RwLmMgfCA1ICsrKy0tCj4gPiDCoDEgZmlsZSBjaGFuZ2VkLCAzIGlu c2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCj4gPiAKPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJz L2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jCj4gPiBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVs X2RwLmMgaW5kZXggNjJmODJjNC4uNmViOTdmYSAxMDA2NDQKPiA+IC0tLSBhL2RyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX2RwLmMKPiA+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVs X2RwLmMKPiA+IEBAIC0zOTcyLDEzICszOTcyLDE0IEBAIGludCBpbnRlbF9kcF9zaW5rX2NyYyhz dHJ1Y3QgaW50ZWxfZHAKPiA+ICppbnRlbF9kcCwKPiA+IHN0cnVjdCBpbnRlbF9jcnRjX3N0YXRl ICpjcnRjX3MKPiA+IMKgCQlyZXR1cm4gcmV0Owo+ID4gCj4gPiDCoAlkbyB7Cj4gPiAtCQlpbnRl bF93YWl0X2Zvcl92YmxhbmsoZGV2X3ByaXYsIGludGVsX2NydGMtCj4gPiA+IAo+ID4gPiBwaXBl KTsKPiA+IC0KPiA+IMKgCQlpZiAoZHJtX2RwX2RwY2RfcmVhZGIoJmludGVsX2RwLT5hdXgsCj4g PiAKPiA+IERQX1RFU1RfU0lOS19NSVNDLCAmYnVmKSA8IDApIHsKPiA+IMKgCQkJcmV0ID0gLUVJ TzsKPiA+IMKgCQkJZ290byBzdG9wOwo+ID4gwqAJCX0KPiA+ICsKPiA+ICsJCWludGVsX3dhaXRf Zm9yX3ZibGFuayhkZXZfcHJpdiwgaW50ZWxfY3J0Yy0KPiA+ID4gCj4gPiA+IHBpcGUpOwo+ID4g Kwo+ID4gwqAJCWNvdW50ID0gYnVmICYgRFBfVEVTVF9DT1VOVF9NQVNLOwo+ID4gCj4gPiDCoAl9 IHdoaWxlICgtLWF0dGVtcHRzICYmIGNvdW50ID09IDApOwo+ID4gLS0KPiA+IDIuNy40Cj4gPiAK PiA+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gPiBJ bnRlbC1nZnggbWFpbGluZyBsaXN0Cj4gPiBJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3Jn Cj4gPiBodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVs LWdmeAotLSAKTWlrYSBLYWhvbGEgLSBJbnRlbCBPVEMKCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4 QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWls bWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=