From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH] drm/i915: Make DP fast link training a module parameter Date: Fri, 20 Nov 2015 16:07:30 +0200 Message-ID: <87bnaobw7x.fsf@intel.com> References: <1448025942-3623-1-git-send-email-mika.kahola@intel.com> <87egfkbx5s.fsf@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 3A9BC6E6A2 for ; Fri, 20 Nov 2015 06:04:13 -0800 (PST) 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: "Kahola, Mika" , "intel-gfx@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org T24gRnJpLCAyMCBOb3YgMjAxNSwgIkthaG9sYSwgTWlrYSIgPG1pa2Eua2Fob2xhQGludGVsLmNv bT4gd3JvdGU6Cj4+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tCj4+IEZyb206IEphbmkgTmlr dWxhIFttYWlsdG86amFuaS5uaWt1bGFAbGludXguaW50ZWwuY29tXQo+PiBTZW50OiBGcmlkYXks IE5vdmVtYmVyIDIwLCAyMDE1IDM6NDcgUE0KPj4gVG86IEthaG9sYSwgTWlrYTsgaW50ZWwtZ2Z4 QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwo+PiBTdWJqZWN0OiBSZTogW0ludGVsLWdmeF0gW1BBVENI XSBkcm0vaTkxNTogTWFrZSBEUCBmYXN0IGxpbmsgdHJhaW5pbmcgYQo+PiBtb2R1bGUgcGFyYW1l dGVyCj4+IAo+PiBPbiBGcmksIDIwIE5vdiAyMDE1LCBNaWthIEthaG9sYSA8bWlrYS5rYWhvbGFA aW50ZWwuY29tPiB3cm90ZToKPj4gPiBUaGVyZSBpcyBhIGJ1ZyByZXBvcnQKPj4gPgo+PiA+IGh0 dHBzOi8vYnVncy5mcmVlZGVza3RvcC5vcmcvc2hvd19idWcuY2dpP2lkPTkxMzkzCj4+ID4KPj4g PiBpbmRpY2F0aW5nIHRoYXQgdGhlcmUgYXJlIHBhbmVscyB0aGF0IGRvIG5vdCBzdXBwb3J0IGxp bmsgdHJhaW5pbmcKPj4gPiBzdGFydGluZyB3aXRoIG5vbi16ZXJvIHZvbHRhZ2Ugc3dpbmcgYW5k IHByZS1lbXBoYXNpcyB2YWx1ZXMuCj4+ID4KPj4gPiBUaGlzIHBhdGNoIHByb3Bvc2VzIHRvIG1h a2UgdGhpcyBmYXN0IGxpbmsgdHJhaW5pbmcgZmVhdHVyZSBhcyBvbmUKPj4gPiBtb2R1bGUgcGFy YW1ldGVyLiBUbyB0YWtlIG1vcmUgY29uc2VydmF0aXZlIGFwcHJvYWNoIHRoaXMgZmVhdHVyZSBp cwo+PiA+IGRpc2FibGVkIGJ5IGRlZmF1bHQuCj4+IAo+PiBQbGVhc2UgbGV0J3Mgbm90IGFkZCBh bnkgbW9yZSBvZiB0aGVzZS4gSWYgd2UgY2FuJ3QgbWFrZSB0aGlzIHdvcmsKPj4gYXV0b21hdGlj YWxseSAod2Ugc2hvdWxkIHN0aWxsIGtlZXAgdHJ5aW5nKSBJJ2Qgc2F5IHdlIHJlbW92ZSBpdC4K Pj4gCj4+IEFkZGluZyBmZWF0dXJlcyBiZWhpbmQgbW9kdWxlIHBhcmFtZXRlcnMgbWVhbnMgdGhh dCBtb3N0IHBlb3BsZSB3aWxsCj4+IG5ldmVyIHVzZSB0aGVtLiBUaGVvcmV0aWNhbGx5IGl0IGRv dWJsZXMgb3VyIHRlc3RpbmcgZWZmb3J0cyBiZWNhdXNlIHdlCj4+IHdvdWxkIGhhdmUgdG8gdGVz dCB3aXRoIHRoZSBmZWF0dXJlIG9uIGFuZCBvZmY7IGluIHByYWN0aXNlIHRoYXQgd29uJ3QgaGFw cGVuCj4+IGFuZCBvbmx5IHRoZSBkZWZhdWx0IHdpbGwgYmUgdGVzdGVkIChiZWNhdXNlIHdlIGFs cmVhZHkgaGF2ZSBzbyBtYW55Cj4+IGZlYXR1cmVzIGJlaGluZCBwYXJhbWV0ZXJzKS4gVGhlIGNv ZGUgYml0cm90cyBhbmQgYnJlYWtzIGV2ZW4gZm9yIHRoZQo+PiBwbGF0Zm9ybXMgb24gd2hpY2gg aXQgZGlkIHdvcmsgb3JpZ2luYWxseS4gVGhlbiB0aGVyZSBhcmUgYSBtaW5vcml0eSBvZiBwZW9w bGUKPj4gd2hvIHdpbGwgZW5hYmxlIGFsbCBwb3NzaWJsZSBrbm9icyB0aGV5IHJlYWQgYWJvdXQg b24gZm9ydW1zIGFuZCB0aGluayB3aWxsCj4+IGltcHJvdmUgcGVyZm9ybWFuY2Ugb3IgcG93ZXIg c2F2aW5ncyBvciBzb21ldGhpbmcsIGFuZCByZXBvcnQgYnVncyB3aGVuCj4+IHRoZXkgZmFpbC4K Pj4gCj4+IElNTyB0aGVyZSdzIGp1c3QgdG9vIG11Y2ggZWZmb3J0IGZvciB0b28gbGl0dGxlIGdh aW4gaWYgd2UgY2FuJ3QgZW5hYmxlIHRoaXMuIEkKPj4ganVzdCB3aXNoIHdlIHdvdWxkIGhhdmUg YmVlbiBhYmxlIHRvIGJsb2NrIG1vcmUgb2YgdGhlIG1vZHVsZSBwYXJhbWV0ZXJzCj4+IGVhcmxp ZXIuLi4KPj4gCj4gVGhlIGlkZWEgdGhhdCBJIGhhZCBpbiBtaW5kIHdhcyB0byBrZWVwIHRoaXMg ZmVhdHVyZSBhcyBzZWxlY3RhYmxlCj4gaXRlbSB1bnRpbCB3ZSBnZXQgdGhpcyB3b3JraW5nIGZv ciBhbGwgcGFuZWwgY29tYmluYXRpb25zLiBUaGF0IHNhaWQsCj4gSSBjb25zaWRlciB0aGlzIHdv dWxkIGhhdmUgYmVlbiBvbmx5IGEgZmlyc3QgYWlkIHRvIHRoZSBwcm9ibGVtLgoKSSBrbm93LiBJ dCdzIHRoZSBzYW1lIGxvZ2ljIGJlaGluZCByb3VnaGx5IGFsbCBvZiB0aGUgZmVhdHVyZSBlbmFi bGUKbW9kdWxlIHBhcmFtZXRlcnMgd2UgaGF2ZS4gOigKCkJSLApKYW5pLgoKPgo+IEFueXdheSwg YmFjayB0byB0aGUgZHJhd2luZyBib2FyZC4uLgo+Cj4gQ2hlZXJzLAo+IE1pa2EKPgo+PiAKPj4g QlIsCj4+IEphbmkuCj4+IAo+PiAKPj4gPgo+PiA+IFNpZ25lZC1vZmYtYnk6IE1pa2EgS2Fob2xh IDxtaWthLmthaG9sYUBpbnRlbC5jb20+Cj4+ID4gLS0tCj4+ID4gIGRyaXZlcnMvZ3B1L2RybS9p OTE1L2k5MTVfZHJ2LmggICAgICAgICAgICAgICB8ICAxICsKPj4gPiAgZHJpdmVycy9ncHUvZHJt L2k5MTUvaTkxNV9wYXJhbXMuYyAgICAgICAgICAgIHwgIDQgKysrKwo+PiA+ICBkcml2ZXJzL2dw dS9kcm0vaTkxNS9pbnRlbF9kcF9saW5rX3RyYWluaW5nLmMgfCAxMSArKysrKysrKysrLQo+PiA+ ICAzIGZpbGVzIGNoYW5nZWQsIDE1IGluc2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKPj4gPgo+ PiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oCj4+ID4gYi9k cml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oIGluZGV4IGE0N2UwZjQuLmRjMmQ1YTAgMTAw NjQ0Cj4+ID4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYuaAo+PiA+ICsrKyBi L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmgKPj4gPiBAQCAtMjY2OSw2ICsyNjY5LDcg QEAgc3RydWN0IGk5MTVfcGFyYW1zIHsKPj4gPiAgCWJvb2wgdmVyYm9zZV9zdGF0ZV9jaGVja3M7 Cj4+ID4gIAlib29sIG51Y2xlYXJfcGFnZWZsaXA7Cj4+ID4gIAlpbnQgZWRwX3Zzd2luZzsKPj4g PiArCWJvb2wgZW5hYmxlX2RwX2ZsdDsKPj4gPiAgfTsKPj4gPiAgZXh0ZXJuIHN0cnVjdCBpOTE1 X3BhcmFtcyBpOTE1IF9fcmVhZF9tb3N0bHk7Cj4+ID4KPj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVy cy9ncHUvZHJtL2k5MTUvaTkxNV9wYXJhbXMuYwo+PiA+IGIvZHJpdmVycy9ncHUvZHJtL2k5MTUv aTkxNV9wYXJhbXMuYwo+PiA+IGluZGV4IDgzNWQ2MDkuLmFlYTVkNDcgMTAwNjQ0Cj4+ID4gLS0t IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9wYXJhbXMuYwo+PiA+ICsrKyBiL2RyaXZlcnMv Z3B1L2RybS9pOTE1L2k5MTVfcGFyYW1zLmMKPj4gPiBAQCAtNTYsNiArNTYsNyBAQCBzdHJ1Y3Qg aTkxNV9wYXJhbXMgaTkxNSBfX3JlYWRfbW9zdGx5ID0gewo+PiA+ICAJLmVkcF92c3dpbmcgPSAw LAo+PiA+ICAJLmVuYWJsZV9ndWNfc3VibWlzc2lvbiA9IGZhbHNlLAo+PiA+ICAJLmd1Y19sb2df bGV2ZWwgPSAtMSwKPj4gPiArCS5lbmFibGVfZHBfZmx0ID0gZmFsc2UsCj4+ID4gIH07Cj4+ID4K Pj4gPiAgbW9kdWxlX3BhcmFtX25hbWVkKG1vZGVzZXQsIGk5MTUubW9kZXNldCwgaW50LCAwNDAw KTsgQEAgLTIwMiwzCj4+ID4gKzIwMyw2IEBAIE1PRFVMRV9QQVJNX0RFU0MoZW5hYmxlX2d1Y19z dWJtaXNzaW9uLCAiRW5hYmxlIEd1Qwo+PiA+IHN1Ym1pc3Npb24gKGRlZmF1bHQ6ZmFsc2UpIikg IG1vZHVsZV9wYXJhbV9uYW1lZChndWNfbG9nX2xldmVsLAo+PiA+IGk5MTUuZ3VjX2xvZ19sZXZl bCwgaW50LCAwNDAwKTsgIE1PRFVMRV9QQVJNX0RFU0MoZ3VjX2xvZ19sZXZlbCwKPj4gPiAgCSJH dUMgZmlybXdhcmUgbG9nZ2luZyBsZXZlbCAoLTE6ZGlzYWJsZWQgKGRlZmF1bHQpLCAwLTM6ZW5h YmxlZCkiKTsKPj4gPiArCj4+ID4gK21vZHVsZV9wYXJhbV9uYW1lZF91bnNhZmUoZW5hYmxlX2Rw X2ZsdCwgaTkxNS5lbmFibGVfZHBfZmx0LCBib29sLAo+PiA+ICswNDAwKTsgTU9EVUxFX1BBUk1f REVTQyhlbmFibGVfZHBfZmx0LCAiRW5hYmxlIERQIGZhc3QgbGluayB0cmFpbmluZwo+PiA+ICso ZGVmYXVsdDpmYWxzZSkiKTsKPj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUv aW50ZWxfZHBfbGlua190cmFpbmluZy5jCj4+ID4gYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9kcF9saW5rX3RyYWluaW5nLmMKPj4gPiBpbmRleCA4ODg4NzkzLi5mOGI2ZDY5IDEwMDY0NAo+ PiA+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwX2xpbmtfdHJhaW5pbmcuYwo+ PiA+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwX2xpbmtfdHJhaW5pbmcuYwo+ PiA+IEBAIC04NSw4ICs4NSwxNyBAQCBzdGF0aWMgYm9vbAo+PiA+ICBpbnRlbF9kcF9yZXNldF9s aW5rX3RyYWluKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHAsCj4+ID4gIAkJCXVpbnQ4X3QgZHBf dHJhaW5fcGF0KQo+PiA+ICB7Cj4+ID4gLQlpZiAoIWludGVsX2RwLT50cmFpbl9zZXRfdmFsaWQp Cj4+ID4gKwlpZiAoaTkxNS5lbmFibGVfZHBfZmx0KSB7Cj4+ID4gKwkJRFJNX0RFQlVHX0tNUygi RFAgZmx0IGVuYWJsZWQsIHRyYWluIHNldCB2YWxpZDogJXNcbiIsCj4+ID4gKwkJCSAgICAgIGlu dGVsX2RwLT50cmFpbl9zZXRfdmFsaWQgPyAidHJ1ZSIgOiAiZmFsc2UiKTsKPj4gPiArCj4+ID4g KwkJaWYgKCFpbnRlbF9kcC0+dHJhaW5fc2V0X3ZhbGlkKQo+PiA+ICsJCQltZW1zZXQoaW50ZWxf ZHAtPnRyYWluX3NldCwgMCwgc2l6ZW9mKGludGVsX2RwLQo+PiA+dHJhaW5fc2V0KSk7Cj4+ID4g Kwl9IGVsc2Ugewo+PiA+ICsJCURSTV9ERUJVR19LTVMoIkRQIGZsdCBkaXNhYmxlZFxuIik7Cj4+ ID4gIAkJbWVtc2V0KGludGVsX2RwLT50cmFpbl9zZXQsIDAsIHNpemVvZihpbnRlbF9kcC0+dHJh aW5fc2V0KSk7Cj4+ID4gKwl9Cj4+ID4gKwo+PiA+ICAJaW50ZWxfZHBfc2V0X3NpZ25hbF9sZXZl bHMoaW50ZWxfZHApOwo+PiA+ICAJcmV0dXJuIGludGVsX2RwX3NldF9saW5rX3RyYWluKGludGVs X2RwLCBkcF90cmFpbl9wYXQpOyAgfQo+PiAKPj4gLS0KPj4gSmFuaSBOaWt1bGEsIEludGVsIE9w ZW4gU291cmNlIFRlY2hub2xvZ3kgQ2VudGVyCgotLSAKSmFuaSBOaWt1bGEsIEludGVsIE9wZW4g U291cmNlIFRlY2hub2xvZ3kgQ2VudGVyCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZy ZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vaW50ZWwtZ2Z4Cg==