From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH v6 4/4] drm/i915: set proper N/CTS in modeset Date: Wed, 02 Sep 2015 12:02:42 +0300 Message-ID: <87twrd2nyl.fsf@intel.com> References: <1441174301-144177-1-git-send-email-libin.yang@intel.com> <1441174301-144177-4-git-send-email-libin.yang@intel.com> <8737yx44hh.fsf@intel.com> <96A12704CE18D347B625EE2D4A099D196F88C1@SHSMSX103.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <96A12704CE18D347B625EE2D4A099D196F88C1@SHSMSX103.ccr.corp.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: "Yang, Libin" , "alsa-devel@alsa-project.org" , "tiwai@suse.de" , "intel-gfx@lists.freedesktop.org" , "daniel.vetter@ffwll.ch" , "ville.syrjala@linux.intel.com" List-Id: alsa-devel@alsa-project.org T24gV2VkLCAwMiBTZXAgMjAxNSwgIllhbmcsIExpYmluIiA8bGliaW4ueWFuZ0BpbnRlbC5jb20+ IHdyb3RlOgo+IEhpIEphbmksCj4KPj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0KPj4gRnJv bTogSmFuaSBOaWt1bGEgW21haWx0bzpqYW5pLm5pa3VsYUBsaW51eC5pbnRlbC5jb21dCj4+IFNl bnQ6IFdlZG5lc2RheSwgU2VwdGVtYmVyIDAyLCAyMDE1IDQ6MjAgUE0KPj4gVG86IFlhbmcsIExp YmluOyBhbHNhLWRldmVsQGFsc2EtcHJvamVjdC5vcmc7IHRpd2FpQHN1c2UuZGU7IGludGVsLQo+ PiBnZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnOyBkYW5pZWwudmV0dGVyQGZmd2xsLmNoOwo+PiB2 aWxsZS5zeXJqYWxhQGxpbnV4LmludGVsLmNvbQo+PiBDYzogWWFuZywgTGliaW4KPj4gU3ViamVj dDogUmU6IFtQQVRDSCB2NiA0LzRdIGRybS9pOTE1OiBzZXQgcHJvcGVyIE4vQ1RTIGluIG1vZGVz ZXQKPj4gCj4+IE9uIFdlZCwgMDIgU2VwIDIwMTUsIGxpYmluLnlhbmdAaW50ZWwuY29tIHdyb3Rl Ogo+PiA+IEZyb206IExpYmluIFlhbmcgPGxpYmluLnlhbmdAaW50ZWwuY29tPgo+PiA+Cj4+ID4g V2hlbiBtb2Rlc2V0IG9jY3VycyBhbmQgdGhlIFRNRFMgZnJlcXVlbmN5IGlzIHNldCB0byBzb21l Cj4+ID4gc3BlaWNhbCB2YWx1ZXMsIHRoZSBOL0NUUyBuZWVkIHRvIGJlIHNldCBtYW51YWxseSBp ZiBhdWRpbwo+PiA+IGlzIHBsYXlpbmcuCj4+IAo+PiBEbyB3ZSBzdGlsbCBuZWVkIHRoaXMgcGF0 Y2ggYWZ0ZXIgRGF2aWQgSGVubmluZ3Nzb24ncyBzZXJpZXMgWzFdPyBJSVVDCj4+IHlvdSB3aWxs IG5vdyBhbHdheXMgZ2V0IHRoZSBjYWxsYmFjayBvbiBtb2Rlc2V0cywgc28geW91IHNob3VsZCBi ZQo+PiBhYmxlCj4+IHRvLCB1aCwgY2FsbGJhY2sgb24gdGhlIGNhbGxiYWNrIHRvIHNldCBhdWRp byByYXRlLiBHcmFudGVkLCB3aXRoIHRoaXMgSQo+PiBzdXBwb3NlIHlvdSByZWR1Y2UgdGhlIHRp bWUgdGhlcmUgbWlnaHQgYmUgd3JvbmcgTi9DVFMgYWZ0ZXIgZW5hYmxlLgo+Cj4gWWVzLCB3ZSBu ZWVkLiBEYXZpZCdzIHBhdGNoIHdpbGwgbm90IHRyaWdnZXIgdGhlIHN5bmNfYXVkaW9fcmF0ZQo+ IGNhbGxiYWNrLgoKT2theS4KCj4KPj4gCj4+IFNvbWUgb3RoZXIgY29tbWVudHMgaW5saW5lLgo+ PiAKPj4gWzFdIGh0dHA6Ly9taWQuZ21hbmUub3JnLzE0NDA3ODEzNTAtMTIwNTMtMS1naXQtc2Vu ZC1lbWFpbC0KPj4gZGF2aWQuaGVubmluZ3Nzb25AY2Fub25pY2FsLmNvbQo+PiAKPj4gPgo+PiA+ IFNpZ25lZC1vZmYtYnk6IExpYmluIFlhbmcgPGxpYmluLnlhbmdAaW50ZWwuY29tPgo+PiA+IC0t LQo+PiA+ICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X3JlZy5oICAgIHwgIDggKysrKysrKysK Pj4gPiAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfYXVkaW8uYyB8IDQwCj4+ICsrKysrKysr KysrKysrKysrKysrKysrKysrKysrKysrKysrKystCj4+ID4gIDIgZmlsZXMgY2hhbmdlZCwgNDcg aW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQo+PiA+Cj4+ID4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfcmVnLmgKPj4gYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1 X3JlZy5oCj4+ID4gaW5kZXggYWU3ZmEzZS4uNWJkZWUzNiAxMDA2NDQKPj4gPiAtLS0gYS9kcml2 ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X3JlZy5oCj4+ID4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaTkxNV9yZWcuaAo+PiA+IEBAIC03MDU4LDYgKzcwNTgsOCBAQCBlbnVtIHNrbF9kaXNwX3Bv d2VyX3dlbGxzIHsKPj4gPiAgCQkJCQlfSFNXX0FVRF9NSVNDX0NUUkxfQSwgXAo+PiA+ICAJCQkJ CV9IU1dfQVVEX01JU0NfQ1RSTF9CKQo+PiA+Cj4+ID4gKyNkZWZpbmUgSFNXX0FVRF9QSVBFX0NP Tk5fU0VMX0NUUkwgIDB4NjUwYWMKPj4gCj4+IE5pdHBpY2suIFRoZSBiaXQgZmllbGRzIGFyZSBu b3QgZGVmaW5lZC4KPgo+IE9LLCBJIHdpbGwgYWRkIHRoZSBiaXQgZGVmaW5pdGlvbi4gCj4KPj4g Cj4+ID4gKwo+PiA+ICAjZGVmaW5lIF9IU1dfQVVEX0RJUF9FTERfQ1RSTF9TVF9BCTB4NjUwYjQK Pj4gPiAgI2RlZmluZSBfSFNXX0FVRF9ESVBfRUxEX0NUUkxfU1RfQgkweDY1MWI0Cj4+ID4gICNk ZWZpbmUgSFNXX0FVRF9ESVBfRUxEX0NUUkwocGlwZSkgX1BJUEUocGlwZSwgXAo+PiA+IEBAIC03 MDcyLDYgKzcwNzQsMTIgQEAgZW51bSBza2xfZGlzcF9wb3dlcl93ZWxscyB7Cj4+ID4gIAkJCQkJ X0hTV19BVURfRElHX0NOVlRfMikKPj4gPiAgI2RlZmluZSBESVBfUE9SVF9TRUxfTUFTSwkJMHgz Cj4+ID4KPj4gPiArI2RlZmluZSBfSFNXX0FVRF9TVFJfREVTQ18xCQkweDY1MDg0Cj4+ID4gKyNk ZWZpbmUgX0hTV19BVURfU1RSX0RFU0NfMgkJMHg2NTE4NAo+PiA+ICsjZGVmaW5lIEFVRF9TVFJf REVTQyhwaXBlKQlfUElQRShwaXBlLCBcCj4+ID4gKwkJCQkJIF9IU1dfQVVEX1NUUl9ERVNDXzEs Cj4+IAlcCj4+ID4gKwkJCQkJIF9IU1dfQVVEX1NUUl9ERVNDXzIpCj4+IAo+PiBOaXRwaWNrLiBU aGUgYml0IGZpZWxkcyBhcmUgbm90IGRlZmluZWQuIEkgdGhpbmsgaXQncyBmaW5lIHRvIHVzZSBf UElQRQo+PiBtYWNybywgYnV0IHlvdSBzaG91bGQgcHJvYmFibHkgdXNlICJjb252ZXJ0ZXIiIG9y ICJjdnQiIG9yIHNvbWV0aGluZwo+PiBmb3IKPj4gdGhlIHBhcmFtZXRlciBuYW1lIHRvIG5vdCBt aXNsZWFkIHBlb3BsZSBpbnRvIHRoaW5raW5nIHRoaXMgaXMgcGlwZQo+PiBiYXNlZC4KPgo+IERv IHlvdSBtZWFuIGl0IHNob3VsZCBiZSBsaWtlOgo+IF9QSVBFKGN2dCwgX0hTV19BVURfU1RSX0RF U0NfMSwgLi4uKSA/CgpZZXMuCgo+Cj4+IAo+PiA+ICsKPj4gPiAgI2RlZmluZSBfSFNXX0FVRF9F RElEX0RBVEFfQQkJMHg2NTA1MAo+PiA+ICAjZGVmaW5lIF9IU1dfQVVEX0VESURfREFUQV9CCQkw eDY1MTUwCj4+ID4gICNkZWZpbmUgSFNXX0FVRF9FRElEX0RBVEEocGlwZSkgX1BJUEUocGlwZSwg XAo+PiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9hdWRpby5jCj4+ IGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfYXVkaW8uYwo+PiA+IGluZGV4IGEwMjE3MjAu LmFjZGI2OGMgMTAwNjQ0Cj4+ID4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfYXVk aW8uYwo+PiA+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2F1ZGlvLmMKPj4gPiBA QCAtMTQwLDYgKzE0MCwyNyBAQCBzdGF0aWMgYm9vbCBhdWRpb19yYXRlX25lZWRfcHJvZyhzdHJ1 Y3QKPj4gaW50ZWxfY3J0YyAqY3J0YywKPj4gPiAgCQlyZXR1cm4gZmFsc2U7Cj4+ID4gIH0KPj4g Pgo+PiA+ICtzdGF0aWMgaW50IGF1ZGlvX2NvbmZpZ19nZXRfcmF0ZShzdHJ1Y3QgZHJtX2k5MTVf cHJpdmF0ZSAqZGV2X3ByaXYsCj4+ID4gKwkJCQkJCWVudW0gcGlwZSBwaXBlKQo+PiA+ICt7Cj4+ ID4gKwl1aW50MzJfdCB0bXA7Cj4+ID4gKwlpbnQgY3Z0X2lkeDsKPj4gPiArCWludCBiYXNlX3Jh dGUsIG11bCwgZGl2LCByYXRlOwo+PiA+ICsKPj4gPiArCXRtcCA9IEk5MTVfUkVBRChIU1dfQVVE X1BJUEVfQ09OTl9TRUxfQ1RSTCk7Cj4+ID4gKwljdnRfaWR4ID0gKHRtcCA+PiAocGlwZSAqIDgp KSAmIDB4ZmY7Cj4+IAo+PiBUaGlzIG9uZSBuZWVkcyB0byBiZSBhZGRyZXNzZWQuIEFyZSB5b3Ug c3VyZSBpdCdzIGluZGV4ZWQgYnkgcGlwZT8gVGhlCj4+IHNwZWMgaXMgdmFndWUuCj4KPiBZZXMs IEkgZGlkIGxvdCBvZiB0ZXN0IHRvIGNvbmZpcm0gaXQuCj4KPj4gCj4+IEJpdHMgNzowIGFyZSAi Y29udHJvbCBCIiwgMTU6OCBhcmUgImNvbnRyb2wgQyIsIGFuZCBzbyBvbiwgd2hpbGUgeW91cgo+ PiAodG1wID4+IChwaXBlICogOCkpIG1hcHMgcGlwZSBBIHRvIGNvbnRyb2wgQiwgcGlwZSBCIHRv IGNvbnRyb2wgQywKPj4gZXRjLiBUaGlzIHdvdWxkIHNwZWFrIGZvciBwb3J0LCBub3QgcGlwZSwg YXMgcGlwZSBBIHNob3VsZCBiZSB2YWxpZAo+PiB3aGlsZSBwb3J0IEEgbm90Lgo+Cj4gV2UgZm91 bmQgdGhlcmUgaXMgc29tZXRoaW5nIHdyb25nL29yIHZhZ3VlIGluIHRoZSBzcGVjLgoKSW5kZWVk LgoKPgo+PiAKPj4gPiArCXRtcCA9IEk5MTVfUkVBRChBVURfU1RSX0RFU0MoY3Z0X2lkeCkpOwo+ PiA+ICsJYmFzZV9yYXRlID0gdG1wICYgKDEgPDwgMTQpOwo+PiAKPj4gTml0cGljay4gV2UgcHJl ZmVyICh0bXAgJiBNQVNLKSA+PiBTSElGVC4KPgo+IE9LLCBJIHdpbGwgY2hhbmdlIGl0Lgo+Cj4+ IAo+PiA+ICsJaWYgKGJhc2VfcmF0ZSA9PSAwKQo+PiA+ICsJCXJhdGUgPSA0ODAwMDsKPj4gPiAr CWVsc2UKPj4gPiArCQlyYXRlID0gNDQxMDA7Cj4+ID4gKwltdWwgPSAodG1wICYgKDB4NyA8PCAx MSkpICsgMTsKPj4gPiArCWRpdiA9ICh0bXAgJiAoMHg3IDw8IDgpKSArIDE7Cj4+IAo+PiBUaGlz IG9uZSBuZWVkcyB0byBiZSBhZGRyZXNzZWQuIFRoaXMgaXMgYm9ndXMuIFRoZSArMSB3b3VsZCB3 b3JrIGlmCj4+IHlvdQo+PiBhY3R1YWxseSBkaWQgKHRtcCAmIE1BU0spID4+IFNISUZULCBidXQg bm93IHlvdSBhZGQgaXQgdG8gdGhlIHNoaWZ0ZWQKPj4gdmFsdWUuIFlvdXIgbXVsdGlwbGllcnMg YW5kIGRpdmlzb3JzIGFyZSAqd2F5KiBvZmYuCj4KPiBPSywgSSB3aWxsIGNoZWNrIGl0IGFuZCBj aGFuZ2UgdGhlIHBhdGNoLgo+PiAKPj4gTkFLIG9uIHRoaXMgcGF0Y2guCj4+IAo+PiA+ICsJcmF0 ZSA9IHJhdGUgKiBtdWwgLyBkaXY7Cj4+ID4gKwlyZXR1cm4gcmF0ZTsKPj4gPiArfQo+PiA+ICsK Pj4gPiAgc3RhdGljIGJvb2wgaW50ZWxfZWxkX3VwdG9kYXRlKHN0cnVjdCBkcm1fY29ubmVjdG9y ICpjb25uZWN0b3IsCj4+ID4gIAkJCSAgICAgICBpbnQgcmVnX2VsZHYsIHVpbnQzMl90IGJpdHNf ZWxkdiwKPj4gPiAgCQkJICAgICAgIGludCByZWdfZWxkYSwgdWludDMyX3QgYml0c19lbGRhLAo+ PiA+IEBAIC0yNjUsNiArMjg2LDggQEAgc3RhdGljIHZvaWQgaHN3X2F1ZGlvX2NvZGVjX2VuYWJs ZShzdHJ1Y3QKPj4gZHJtX2Nvbm5lY3RvciAqY29ubmVjdG9yLAo+PiA+ICAJY29uc3QgdWludDhf dCAqZWxkID0gY29ubmVjdG9yLT5lbGQ7Cj4+ID4gIAl1aW50MzJfdCB0bXA7Cj4+ID4gIAlpbnQg bGVuLCBpOwo+PiA+ICsJaW50IG5fbG93LCBuX3VwLCBuOwo+PiA+ICsJaW50IHJhdGU7Cj4+ID4K Pj4gPiAgCURSTV9ERUJVR19LTVMoIkVuYWJsZSBhdWRpbyBjb2RlYyBvbiBwaXBlICVjLCAldSBi eXRlcwo+PiBFTERcbiIsCj4+ID4gIAkJICAgICAgcGlwZV9uYW1lKHBpcGUpLCBkcm1fZWxkX3Np emUoZWxkKSk7Cj4+ID4gQEAgLTMwMiwxMiArMzI1LDI3IEBAIHN0YXRpYyB2b2lkCj4+IGhzd19h dWRpb19jb2RlY19lbmFibGUoc3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5lY3RvciwKPj4gPiAg CS8qIEVuYWJsZSB0aW1lc3RhbXBzICovCj4+ID4gIAl0bXAgPSBJOTE1X1JFQUQoSFNXX0FVRF9D RkcocGlwZSkpOwo+PiA+ICAJdG1wICY9IH5BVURfQ09ORklHX05fVkFMVUVfSU5ERVg7Cj4+ID4g LQl0bXAgJj0gfkFVRF9DT05GSUdfTl9QUk9HX0VOQUJMRTsKPj4gPiAgCXRtcCAmPSB+QVVEX0NP TkZJR19QSVhFTF9DTE9DS19IRE1JX01BU0s7Cj4+ID4gIAlpZiAoaW50ZWxfcGlwZV9oYXNfdHlw ZShpbnRlbF9jcnRjLAo+PiBJTlRFTF9PVVRQVVRfRElTUExBWVBPUlQpKQo+PiA+ICAJCXRtcCB8 PSBBVURfQ09ORklHX05fVkFMVUVfSU5ERVg7Cj4+ID4gIAllbHNlCj4+ID4gIAkJdG1wIHw9IGF1 ZGlvX2NvbmZpZ19oZG1pX3BpeGVsX2Nsb2NrKG1vZGUpOwo+PiA+ICsKPj4gPiArCXRtcCAmPSB+ QVVEX0NPTkZJR19OX1BST0dfRU5BQkxFOwo+PiA+ICsJaWYgKGF1ZGlvX3JhdGVfbmVlZF9wcm9n KGludGVsX2NydGMsIG1vZGUpKSB7Cj4+ID4gKwkJcmF0ZSA9IGF1ZGlvX2NvbmZpZ19nZXRfcmF0 ZShkZXZfcHJpdiwgcGlwZSk7Cj4+ID4gKwkJbiA9IGF1ZGlvX2NvbmZpZ19nZXRfbihtb2RlLCBy YXRlKTsKPj4gPiArCQlpZiAobiAhPSAwKSB7Cj4+ID4gKwkJCW5fbG93ID0gbiAmIDB4ZmZmOwo+ PiA+ICsJCQluX3VwID0gKG4gPj4gMTIpICYgMHhmZjsKPj4gPiArCQkJdG1wICY9IH4oQVVEX0NP TkZJR19VUFBFUl9OX01BU0sgfAo+PiA+ICsKPj4gQVVEX0NPTkZJR19MT1dFUl9OX01BU0spOwo+ PiA+ICsJCQl0bXAgfD0gKChuX3VwIDw8Cj4+IEFVRF9DT05GSUdfVVBQRVJfTl9TSElGVCkgfAo+ PiA+ICsJCQkJCShuX2xvdyA8PAo+PiBBVURfQ09ORklHX0xPV0VSX05fU0hJRlQpIHwKPj4gPiAr Cj4+IAlBVURfQ09ORklHX05fUFJPR19FTkFCTEUpOwo+PiAKPj4gTml0cGljay4gSSdkIHByZWZl ciBzb21lIHNoYXJpbmcgd2l0aCB0aGUgc2ltaWxhciBibG9ja3MgZnJvbSB0aGUKPj4gZWFybGll ciBwYXRjaC4gQWxzbyBhIGRlYnVnIG1lc3NhZ2Ugb24gbiA9PSAwIHdvdWxkIGJlIG5pY2U7IHlv dQo+PiBwcm9iYWJseSBkaWRuJ3Qgbm90aWNlIHlvdXIgYXVkaW9fY29uZmlnX2dldF9yYXRlKCkg d2Fzbid0IHdvcmtpbmcKPj4gcmlnaHQKPj4gYmVjYXVzZSB0aGlzIHNpbGVudGx5IGZlbGwgYmFj ayB0byB0aGUgYXV0b21hdGljIG1vZGUgaGVyZS4KPgo+IE9LLCBJIHdpbGwgYWRkIHRoZSBtc2cu IEFzIHlvdSBhbmQgVmlsbGUgYXJlIGluc2lzdGluZyBvbgo+IHNoYXJpbmcgY29kZSwgSSB3aWxs IGRvIGl0IGluIG5leHQgdmVyc2lvbi4KCldlbGwsIHJlYWxseSwgSSdtIGZpbmUgd2l0aCBoYXZp bmcgdGhhdCBwYXJ0IGR1cGxpY2F0ZWQgYXMtaXMgZm9yIG5vdywKd2UgY2FuIGZpeCBpdCBsYXRl ci4gTW9yZSBpbXBvcnRhbnQgdG8gZm9jdXMgb24gZ2V0dGluZwphdWRpb19jb25maWdfZ2V0X3Jh dGUoKSByaWdodC4KCkkgZG9uJ3Qga25vdyBpZiB5b3UncmUgc3RpbGwgdGFyZ2V0aW5nIHY0LjMg d2l0aCB0aGlzICh1cCB0byBUYWthc2hpIEkKZ3Vlc3MpIHdlJ2xsIHJlYWxseSBuZWVkIHRvIHdy YXAgdGhpcyB1cCBzb29uLgoKQlIsCkphbmkuCgo+Cj4gUmVnYXJkcywKPiBMaWJpbgo+PiAKPj4g PiArCQl9Cj4+ID4gKwl9Cj4+ID4gKwo+PiA+ICAJSTkxNV9XUklURShIU1dfQVVEX0NGRyhwaXBl KSwgdG1wKTsKPj4gPgo+PiA+ICAJbXV0ZXhfdW5sb2NrKCZkZXZfcHJpdi0+YXZfbXV0ZXgpOwo+ PiA+IC0tCj4+ID4gMS45LjEKPj4gPgo+PiAKPj4gLS0KPj4gSmFuaSBOaWt1bGEsIEludGVsIE9w ZW4gU291cmNlIFRlY2hub2xvZ3kgQ2VudGVyCgotLSAKSmFuaSBOaWt1bGEsIEludGVsIE9wZW4g U291cmNlIFRlY2hub2xvZ3kgQ2VudGVyCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZy ZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vaW50ZWwtZ2Z4Cg==