From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH 12/15] drm/i915: Zero out HOWM registers before writing new WM/HOWM register values Date: Fri, 2 Dec 2016 11:51:52 +0200 Message-ID: <20161202095152.GP31595@intel.com> References: <1480354637-14209-1-git-send-email-ville.syrjala@linux.intel.com> <1480354637-14209-13-git-send-email-ville.syrjala@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2031E6E936 for ; Fri, 2 Dec 2016 09:51:56 +0000 (UTC) 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: Maarten Lankhorst Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCBEZWMgMDEsIDIwMTYgYXQgMDM6NDM6MDdQTSArMDEwMCwgTWFhcnRlbiBMYW5raG9y c3Qgd3JvdGU6Cj4gT3AgMjgtMTEtMTYgb20gMTg6Mzcgc2NocmVlZiB2aWxsZS5zeXJqYWxhQGxp bnV4LmludGVsLmNvbToKPiA+IEZyb206IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBs aW51eC5pbnRlbC5jb20+Cj4gPgo+ID4gT24gVkxWL0NIViBzb21lIG9mIHRoZSB3YXRlcm1hcmsg dmFsdWVzIGFyZSBzcGxpdCBhY3Jvc3MgdHdvIHJlZ2lzdGVyczoKPiA+IGxvdyBvcmRlciBiaXRz IGluIG9uZSwgYW5kIGhpZ2ggb3JkZXIgYml0cyBpbiBhbm90aGVyLiBTbyB3ZSBtYXkgbm90IGJl Cj4gPiBhYmxlIHRvIHVwZGF0ZSBhIHNpbmdsZSB3YXRlcm1hcmsgdmFsdWUgYXRvbWljYWxseSwg YW5kIHRodXMgd2UgbXVzdCBiZQo+ID4gY2FyZWZ1bCB0aGF0IHdlIGRvbid0IHRlbXBvcmFyaWx5 IGludHJvZHVjZSBvdXQgb2YgYm91bmRzIHZhbHVlcyBkdXJpbmcKPiA+IHRoZSByZXByb2dyYW1t aW5nLiBUbyBwcmV2ZW50IHRoaXMgd2UgY2FuIHNpbXBseSB6ZXJvIG91dCBhbGwgdGhlIGhpZ2gK PiA+IG9yZGVyIGJpdHMgaW5pdGlhbGx5LCB0aGVuIHdlIHVwZGF0ZSB0aGUgbG93IG9yZGVyIGJp dHMsIGFuZCBmaW5hbGx5Cj4gPiB3ZSB1cGRhdGUgdGhlIGhpZ2ggb3JkZXIgYml0cyB3aXRoIHRo ZSBmaW5hbCB2YWx1ZS4KPiA+Cj4gPiBTaWduZWQtb2ZmLWJ5OiBWaWxsZSBTeXJqw6Rsw6QgPHZp bGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgo+ID4gLS0tCj4gPiAgZHJpdmVycy9ncHUvZHJt L2k5MTUvaW50ZWxfcG0uYyB8IDE3ICsrKysrKysrKysrLS0tLS0tCj4gPiAgMSBmaWxlIGNoYW5n ZWQsIDExIGluc2VydGlvbnMoKyksIDYgZGVsZXRpb25zKC0pCj4gPgo+ID4gZGlmZiAtLWdpdCBh L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3BtLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p bnRlbF9wbS5jCj4gPiBpbmRleCA5ZjI1ZjIxOTVhNmEuLjhhMzQ0MWJiZmYzMCAxMDA2NDQKPiA+ IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3BtLmMKPiA+ICsrKyBiL2RyaXZlcnMv Z3B1L2RybS9pOTE1L2ludGVsX3BtLmMKPiA+IEBAIC04NzcsNiArODc3LDE3IEBAIHN0YXRpYyB2 b2lkIHZsdl93cml0ZV93bV92YWx1ZXMoc3RydWN0IGludGVsX2NydGMgKmNydGMsCj4gPiAgCQkg ICAod20tPmRkbFtwaXBlXS5wbGFuZVtQTEFORV9TUFJJVEUwXSA8PCBERExfU1BSSVRFX1NISUZU KDApKSB8Cj4gPiAgCQkgICAod20tPmRkbFtwaXBlXS5wbGFuZVtQTEFORV9QUklNQVJZXSA8PCBE RExfUExBTkVfU0hJRlQpKTsKPiA+ICAKPiA+ICsJLyoKPiA+ICsJICogWmVybyB0aGUgKHVudXNl ZCkgV00xIHdhdGVybWFya3MsIGFuZCBhbHNvIGNsZWFyIGFsbCB0aGUKPiA+ICsJICogaGlnaCBv cmRlciBiaXRzIHNvIHRoYXQgdGhlcmUgYXJlIG5vIG91dCBvZiBib3VuZHMgdmFsdWVzCj4gPiAr CSAqIHByZXNlbnQgaW4gdGhlIHJlZ2lzdGVycyBkdXJpbmcgdGhlIHJlcHJvZ3JhbW1pbmcuCj4g PiArCSAqLwo+ID4gKwlJOTE1X1dSSVRFKERTUEhPV00sIDApOwo+ID4gKwlJOTE1X1dSSVRFKERT UEhPV00xLCAwKTsKPiA+ICsJSTkxNV9XUklURShEU1BGVzQsIDApOwo+ID4gKwlJOTE1X1dSSVRF KERTUEZXNSwgMCk7Cj4gPiArCUk5MTVfV1JJVEUoRFNQRlc2LCAwKTsKPiBXYXRlcm1hcmtzIGZv ciBEU1BIT1dNIGFyZSBpbnZlcnRlZCByaWdodD8gQW5kIGxvd2VyIHZhbHVlcyBqdXN0IG1lYW4g bW9yZSB3YWtldXBzPwoKWWVzLCBpdCdzIGFsbCBpbnZlcnRlZC4KCj4gU2hvdWxkIGJlIGhhcm1s ZXNzIHRoZW4uCj4gCj4gUmV2aWV3ZWQtYnk6IE1hYXJ0ZW4gTGFua2hvcnN0IDxtYWFydGVuLmxh bmtob3JzdEBsaW51eC5pbnRlbC5jb20+Cj4gPiAgCUk5MTVfV1JJVEUoRFNQRlcxLAo+ID4gIAkJ ICAgRldfV00od20tPnNyLnBsYW5lLCBTUikgfAo+ID4gIAkJICAgRldfV00od20tPnBpcGVbUElQ RV9CXS5wbGFuZVtQTEFORV9DVVJTT1JdLCBDVVJTT1JCKSB8Cj4gPiBAQCAtOTI0LDEyICs5MzUs NiBAQCBzdGF0aWMgdm9pZCB2bHZfd3JpdGVfd21fdmFsdWVzKHN0cnVjdCBpbnRlbF9jcnRjICpj cnRjLAo+ID4gIAkJCSAgIEZXX1dNKHdtLT5waXBlW1BJUEVfQV0ucGxhbmVbUExBTkVfUFJJTUFS WV0gPj4gOCwgUExBTkVBX0hJKSk7Cj4gPiAgCX0KPiA+ICAKPiA+IC0JLyogemVybyAodW51c2Vk KSBXTTEgd2F0ZXJtYXJrcyAqLwo+ID4gLQlJOTE1X1dSSVRFKERTUEZXNCwgMCk7Cj4gPiAtCUk5 MTVfV1JJVEUoRFNQRlc1LCAwKTsKPiA+IC0JSTkxNV9XUklURShEU1BGVzYsIDApOwo+ID4gLQlJ OTE1X1dSSVRFKERTUEhPV00xLCAwKTsKPiA+IC0KPiA+ICAJUE9TVElOR19SRUFEKERTUEZXMSk7 Cj4gPiAgfQo+ID4gIAo+IAoKLS0gClZpbGxlIFN5cmrDpGzDpApJbnRlbCBPVEMKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcg bGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRl c2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==