From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH v2] drm/i915: Improve DP downstream HPD handling Date: Fri, 27 Oct 2017 13:02:24 +0300 Message-ID: <871slogb7z.fsf@intel.com> References: <20171026194123.21388-1-ville.syrjala@linux.intel.com> <20171027094523.9317-1-ville.syrjala@linux.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 ESMTPS id 9DDA36E8CE for ; Fri, 27 Oct 2017 10:02:51 +0000 (UTC) In-Reply-To: <20171027094523.9317-1-ville.syrjala@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Ville Syrjala , intel-gfx@lists.freedesktop.org Cc: Pablo , David Woodhouse , Dhinakaran Pandiyan List-Id: intel-gfx@lists.freedesktop.org T24gRnJpLCAyNyBPY3QgMjAxNywgVmlsbGUgU3lyamFsYSA8dmlsbGUuc3lyamFsYUBsaW51eC5p bnRlbC5jb20+IHdyb3RlOgo+IEZyb206IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBs aW51eC5pbnRlbC5jb20+Cj4KPiBEUCBkb25nbGVzIG1heSBzaWduYWwgZG93bnN0cmVhbSBIUEQg dmlhIHNob3J0IEhQRCBwdWxzZXMuIFNldHRpbmcgdGhlCj4gc2luayB0byBEUE1TIG9mZiBhcHBh cmVudGx5IGtpbGxzIHRoZSBkb3duc3RyZWFtIEhQRCAoYXQgbGVhc3Qgb24gbXkKPiBEUC0+VkdB IGRvbmdsZSksIHNvIHNraXAgdGhlIERQTVMgb2ZmIGZvciBzdWNoIGRvbmdsZXMgd2hlbiB3ZSB0 dXJuCj4gb2ZmIHRoZSBwb3J0Lgo+Cj4gdjI6IERlYWwgd2l0aCBEREkgYXMgd2VsbCBieSBtb3Zp bmcgdGhlIGNoZWNrIGludG8KPiAgICAgaW50ZWxfZHBfc2lua19kcG1zKCkgKERoaW5ha2FyYW4p Cj4KPiBDYzogRGhpbmFrYXJhbiBQYW5kaXlhbiA8ZGhpbmFrYXJhbi5wYW5kaXlhbkBpbnRlbC5j b20+Cj4gQ2M6IERhdmlkIFdvb2Rob3VzZSA8ZHdtdzJAaW5mcmFkZWFkLm9yZz4KPiBDYzogSW1y ZSBEZWFrIDxpbXJlLmRlYWtAaW50ZWwuY29tPgo+IENjOiBQYWJsbyA8cGFibG9kZWJpYXNlQG5h bmFseXNpcy5jb20+Cj4gQnVnemlsbGE6IGh0dHBzOi8vYnVncy5mcmVlZGVza3RvcC5vcmcvc2hv d19idWcuY2dpP2lkPTEwMzQ3Mgo+IEJ1Z3ppbGxhOiBodHRwczovL2J1Z3MuZnJlZWRlc2t0b3Au b3JnL3Nob3dfYnVnLmNnaT9pZD05OTExNAo+IFNpZ25lZC1vZmYtYnk6IFZpbGxlIFN5cmrDpGzD pCA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+CgpSZXZpZXdlZC1ieTogSmFuaSBOaWt1 bGEgPGphbmkubmlrdWxhQGludGVsLmNvbT4KCgo+IC0tLQo+ICBkcml2ZXJzL2dwdS9kcm0vaTkx NS9pbnRlbF9kcC5jIHwgMTggKysrKysrKysrKysrKysrKysrCj4gIDEgZmlsZSBjaGFuZ2VkLCAx OCBpbnNlcnRpb25zKCspCj4KPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50 ZWxfZHAuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwLmMKPiBpbmRleCBhYTc1ZjU1 ZWViNjEuLjU5MTY5YTRkYzlkMyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p bnRlbF9kcC5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHAuYwo+IEBAIC0y NTA1LDYgKzI1MDUsMjEgQEAgc3RhdGljIHZvaWQgaXJvbmxha2VfZWRwX3BsbF9vZmYoc3RydWN0 IGludGVsX2RwICppbnRlbF9kcCkKPiAgCXVkZWxheSgyMDApOwo+ICB9Cj4gIAo+ICtzdGF0aWMg Ym9vbCBkb3duc3RyZWFtX2hwZF9uZWVkc19kMChzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwKQo+ ICt7Cj4gKwkvKgo+ICsJICogRFBDRCAxLjIrIHNob3VsZCBzdXBwb3J0IEJSQU5DSF9ERVZJQ0Vf Q1RSTCwgYW5kIHRodXMKPiArCSAqIGJlIGNhcGFibGUgb2Ygc2lnbmFsbGluZyBkb3duc3RyZWFt IGhwZCB3aXRoIGEgbG9uZyBwdWxzZS4KPiArCSAqIFdoZXRoZXIgb3Igbm90IHRoYXQgbWVhbnMg RDMgaXMgc2FmZSB0byB1c2UgaXMgbm90IGNsZWFyLAo+ICsJICogYnV0IGxldCdzIGFzc3VtZSBz byB1bnRpbCBwcm92ZW4gb3RoZXJ3aXNlLgo+ICsJICoKPiArCSAqIEZJWE1FIHNob3VsZCByZWFs bHkgY2hlY2sgYWxsIGRvd25zdHJlYW0gcG9ydHMuLi4KPiArCSAqLwo+ICsJcmV0dXJuIGludGVs X2RwLT5kcGNkW0RQX0RQQ0RfUkVWXSA9PSAweDExICYmCj4gKwkJaW50ZWxfZHAtPmRwY2RbRFBf RE9XTlNUUkVBTVBPUlRfUFJFU0VOVF0gJiBEUF9EV05fU1RSTV9QT1JUX1BSRVNFTlQgJiYKPiAr CQlpbnRlbF9kcC0+ZG93bnN0cmVhbV9wb3J0c1swXSAmIERQX0RTX1BPUlRfSFBEOwo+ICt9Cj4g Kwo+ICAvKiBJZiB0aGUgc2luayBzdXBwb3J0cyBpdCwgdHJ5IHRvIHNldCB0aGUgcG93ZXIgc3Rh dGUgYXBwcm9wcmlhdGVseSAqLwo+ICB2b2lkIGludGVsX2RwX3NpbmtfZHBtcyhzdHJ1Y3QgaW50 ZWxfZHAgKmludGVsX2RwLCBpbnQgbW9kZSkKPiAgewo+IEBAIC0yNTE1LDYgKzI1MzAsOSBAQCB2 b2lkIGludGVsX2RwX3NpbmtfZHBtcyhzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwLCBpbnQgbW9k ZSkKPiAgCQlyZXR1cm47Cj4gIAo+ICAJaWYgKG1vZGUgIT0gRFJNX01PREVfRFBNU19PTikgewo+ ICsJCWlmIChkb3duc3RyZWFtX2hwZF9uZWVkc19kMChpbnRlbF9kcCkpCj4gKwkJCXJldHVybjsK PiArCj4gIAkJcmV0ID0gZHJtX2RwX2RwY2Rfd3JpdGViKCZpbnRlbF9kcC0+YXV4LCBEUF9TRVRf UE9XRVIsCj4gIAkJCQkJIERQX1NFVF9QT1dFUl9EMyk7Cj4gIAl9IGVsc2UgewoKLS0gCkphbmkg TmlrdWxhLCBJbnRlbCBPcGVuIFNvdXJjZSBUZWNobm9sb2d5IENlbnRlcgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK