From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lyude Paul Subject: Re: [Intel-gfx] [PATCH] drm/i915: Resume DP MST before doing any kind of modesetting Date: Thu, 25 Feb 2016 10:09:14 -0500 Message-ID: <1456412954.5486.4.camel@redhat.com> References: <1456265512-15670-1-git-send-email-cpaul@redhat.com> <56CD1660.2030203@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <56CD1660.2030203@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: "Thulasimani, Sivakumar" , intel-gfx@lists.freedesktop.org Cc: Daniel Vetter , "open list:INTEL DRM DRIVERS excluding Poulsbo, Moorestow..., linux-kernel@vger.kernel.org open list" , stable@vger.kernel.org List-Id: intel-gfx@lists.freedesktop.org VW5mb3J0dW5hdGVseSBNU1QgaXMgYSB3aWxkIGJlYXN0LCBhbmQgZG9lc24ndCB3b3JrIGF0IGFs bCBsaWtlIG90aGVyCmNvbm5lY3RvcnMuIFRoaXMgYmVpbmcgc2FpZCwgcHV0dGluZyBpdCBhYm92 ZSBpbnRlbF9kaXNwbGF5X3Jlc3VtZSgpIHdhcyB0aGUKZmlyc3QgdGhpbmcgSSB0cmllZCBidXQg dGhhdCBkaWRuJ3Qgd29yay4gT3JpZ2luYWxseSBJIGhhZCB0aG91Z2h0IHB1dHRpbmcgaXQKdGhp cyBoaWdoIHVwIHdhcyByZXF1aXJlZCBiZWNhdXNlIEkgaGFkIGFzc3VtZWQgZHJtX21vZGVfY29u ZmlnX3Jlc2V0KCkgd2FzCmRvaW5nIG1vZGVzZXR0aW5nIGFzIHdlbGwgYnV0IGRvaW5nIHNvbWUg aW52ZXN0aWdhdGlvbiwgaXQgZG9lc24ndCBsb29rIGxpa2UKdGhhdCBjYWxsIGFjdHVhbGx5IGRv ZXMgYW55dGhpbmcuIEl0IGxvb2tzIGxpa2UgdGhlIHJlYWwgY3VscHJpdCBoZXJlIGlzCmludGVs X3J1bnRpbWVfcG1fZW5hYmxlX2ludGVycnVwdHMoKSwgc28gbG9uZyBhcyB0aGUgY2FsbCB0bwpp bnRlbF9kcF9tc3RfcmVzdW1lKCkgaXMgYWJvdmUgdGhhdCBldmVyeXRoaW5nIHdvcmtzLiBTbyBu b3cgSSdtIGEgbGl0dGxlIHVuc3VyZQp3aHkgdGhpcyBpcyB3b3JraW5nIGxpa2UgaXQgaXMsIGFs dGhvdWdoIEkgY2FuIGRlZmluaXRlbHkgc2VlIHRoZSBwYXRjaCBmaXhlcwp0aGUgaXNzdWUuIEkn bSBnb2luZyB0byBlZGl0IHRoZSBwYXRjaCB0byByZWZsZWN0IHRoaXMsIGFuZCBzZWUgaWYgSSBj YW4gZ2V0IGFueQptb3JlIGluc2lnaHQgYXMgdG8gd2h5IHRoaXMgZml4ZXMgaXQuCgoKT24gV2Vk LCAyMDE2LTAyLTI0IGF0IDA4OjAzICswNTMwLCBUaHVsYXNpbWFuaSwgU2l2YWt1bWFyIHdyb3Rl Ogo+IAo+IE9uIDIvMjQvMjAxNiAzOjQxIEFNLCBMeXVkZSB3cm90ZToKPiA+IEFzIGl0IHR1cm5z IG91dCwgcmVzdW1pbmcgRFAgTVNUIGlzIHJhY2V5IHNpbmNlIHdlIGRvbid0IG1ha2Ugc3VyZSBN U1QKPiA+IGlzIHJlYWR5IGJlZm9yZSB3ZSBzdGFydCBtb2Rlc2V0dGluZywgaXQganVzdCB1c3Vh bGx5IGhhcHBlbnMgdG8gYmUKPiA+IHJlYWR5IGluIHRpbWUuIFRoaXMgaXNuJ3QgdGhlIGNhc2Ug b24gYWxsIHN5c3RlbXMsIHBhcnRpY3VsYXJseSBhCj4gPiBUaGlua1BhZCBUNTYwIHdpdGggZGlz cGxheXMgY29ubmVjdGVkIHRocm91Z2ggdGhlIGRvY2suIE9uIHRoZXNlCj4gPiBzeXN0ZW1zLCBy ZXN1bWluZyB0aGUgbGFwdG9wIHdoaWxlIGNvbm5lY3RlZCB0byB0aGUgZG9jayB1c3VhbGx5IHJl c3VsdHMKPiA+IGluIGJsYW5rIG1vbml0b3JzLiBNYWtpbmcgc3VyZSBNU1QgaXMgcmVhZHkgYmVm b3JlIGRvaW5nIGFueSBraW5kIG9mCj4gPiBtb2Rlc2V0dGluZyBmaXhlcyB0aGlzIGlzc3VlLgo+ IGJhc2ljIHF1ZXN0aW9uIHNpbmNlIGkgaGF2ZW4ndCB3b3JrZWQgb24gTVNUIG11Y2guIE1TVCBz aG91bGQgd29yayBsaWtlIGFueQo+IG90aGVyIGRpZ2l0YWwgcGFuZWwgb24gcmVzdW1lLiBpLmUg ZGV0ZWN0IGZvbGxvd2VkIGJ5IG1vZGVzZXQuIGluIHRoZcKgCj4gbW9kaWZpZWQKPiBjb21taXQg bWVudGlvbmVkIGJlbG93IGlzIGl0IGZhaWxpbmcgdG8gZGV0ZWN0IHRoZSBwYW5lbCBvciBmYWls aW5nIGF0wqAKPiB0aGUgbW9kZXNldCA/Cj4gaWYgd2UgYXJlIGRlcGVuZGluZyBvbiB0aGUgaW50 ZWxfZGlzcGxheV9yZXN1bWUsIGhvdyBhYm91dCBtb3ZpbmcgdGhlCj4gaW50ZWxfZHBfbXN0X3Jl c3VtZSBqdXN0IGFib3ZlIGludGVsX2Rpc3BsYXlfcmVzdW1lPwo+IAo+IAo+IEdlbmVyaWMgcXVl c3Rpb24gdG8gb3RoZXJzIGluIG1haWwgbGlzdCBvbiBpOTE1X2RybV9yZXN1bWUKPiB3ZSBhcmUg ZG9pbmcgYSBtb2Rlc2V0IGFuZCB0aGVuIGRvaW5nIHRoZSBkZXRlY3QvaHBkIGluaXQuCj4gc2hv dWxkbid0IHRoaXMgYmUgdGhlIG90aGVyIHdheSByb3VuZCA/IGFsbW9zdCBhbGwgZGlzcGxheXMK PiB3aWxsIHBhc3MgYSBtb2Rlc2V0IGV2ZW4gaWYgZGlzcGxheSBpcyBub3QgY29ubmVjdGVkIHNv IHdlCj4gYXJlIHNwZW5kaW5nIHRpbWUgb24gbW9kZXNldCBldmVuIGZvciBkaXNwbGF5cyB0aGF0 IHdlcmUKPiByZW1vdmVkIGR1cmluZyB0aGUgc3VzcGVuZCBzdGF0ZS4gaWYgdGhpcyBpcyB0byBz aW1wbHkKPiBkcm1fc3RhdGUgYmVpbmcgc2F2ZWQgYW5kIHJlc3RvcmVkLAo+ID4gV2Ugb3JpZ2lu YWxseSBjaGFuZ2VkIHRoZSByZXN1bWUgb3JkZXIgaW4KPiA+IAo+ID4gCWNvbW1pdCBlN2Q2Zjdk NzA4MjkgKCJkcm0vaTkxNTogcmVzdW1lIE1TVCBhZnRlciByZWFkaW5nIGJhY2sgaHcgc3RhdGUi KQo+ID4gCj4gPiB0byBmaXggYSB0b24gb2YgV0FSTl9PTidzIGFmdGVyIHJlc3VtZSwgYnV0IHRo aXMgZG9lc24ndCBzZWVtIHRvIGJlIGFuCj4gPiBpc3N1ZSBub3cgYW55aG93Lgo+ID4gCj4gPiBD Qzogc3RhYmxlQHZnZXIua2VybmVsLm9yZwo+ID4gU2lnbmVkLW9mZi1ieTogTHl1ZGUgPGNwYXVs QHJlZGhhdC5jb20+Cj4gPiAtLS0KPiA+IMKgIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2 LmMgfCAxMCArKysrKysrKy0tCj4gPiDCoCAxIGZpbGUgY2hhbmdlZCwgOCBpbnNlcnRpb25zKCsp LCAyIGRlbGV0aW9ucygtKQo+ID4gCj4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaTkxNV9kcnYuYwo+ID4gYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5jCj4gPiBp bmRleCBmMzU3MDU4Li40ZGNmM2RkIDEwMDY0NAo+ID4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaTkxNV9kcnYuYwo+ID4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYuYwo+ ID4gQEAgLTczMyw2ICs3MzMsMTQgQEAgc3RhdGljIGludCBpOTE1X2RybV9yZXN1bWUoc3RydWN0 IGRybV9kZXZpY2UgKmRldikKPiA+IMKgwqAJaW50ZWxfb3ByZWdpb25fc2V0dXAoZGV2KTsKPiA+ IMKgwqAKPiA+IMKgwqAJaW50ZWxfaW5pdF9wY2hfcmVmY2xrKGRldik7Cj4gPiArCj4gPiArCS8q Cj4gPiArCcKgKiBXZSBuZWVkIHRvIG1ha2Ugc3VyZSB0aGF0IHdlIHJlc3VtZSBNU1QgYmVmb3Jl IGRvaW5nIGFueXRoaW5nCj4gPiArCcKgKiBkaXNwbGF5IHJlbGF0ZWQsIG90aGVyd2lzZSB3ZSBy aXNrIHRyeWluZyB0byBicmluZyB1cCBhIGRpc3BsYXkKPiA+IG9uCj4gPiArCcKgKiBNU1QgYmVm b3JlIHRoZSBodWIgaXMgYWN0dWFsbHkgcmVhZHkKPiA+ICsJwqAqLwo+ID4gKwlpbnRlbF9kcF9t c3RfcmVzdW1lKGRldik7Cj4gPiArCj4gVGhpcyBkb2VzIG5vdCBsb29rIHByb3Blci4gaWYgdGhl IENEIGNsb2NrIGlzIHR1cm5lZCBvZmYgZHVyaW5nIHN1c3BlbmQKPiBvdXIgZHBjZCByZWFkIGl0 c2VsZiBtaWdodCBmYWlsIHRpbGwgd2UgZW5hYmxlIENEIENsb2NrLgo+IAo+IHJlZ2FyZHMsCj4g U2l2YWt1bWFyCj4gPiDCoMKgCWRybV9tb2RlX2NvbmZpZ19yZXNldChkZXYpOwo+ID4gwqDCoAo+ ID4gwqDCoAkvKgo+ID4gQEAgLTc2NSw4ICs3NzMsNiBAQCBzdGF0aWMgaW50IGk5MTVfZHJtX3Jl c3VtZShzdHJ1Y3QgZHJtX2RldmljZSAqZGV2KQo+ID4gwqDCoAlpbnRlbF9kaXNwbGF5X3Jlc3Vt ZShkZXYpOwo+ID4gwqDCoAlkcm1fbW9kZXNldF91bmxvY2tfYWxsKGRldik7Cj4gPiDCoMKgCj4g PiAtCWludGVsX2RwX21zdF9yZXN1bWUoZGV2KTsKPiA+IC0KPiA+IMKgwqAJLyoKPiA+IMKgwqAJ wqAqIC4uLiBidXQgYWxzbyBuZWVkIHRvIG1ha2Ugc3VyZSB0aGF0IGhvdHBsdWcgcHJvY2Vzc2lu Zwo+ID4gwqDCoAnCoCogZG9lc24ndCBjYXVzZSBoYXZvYy4gTGlrZSBpbiB0aGUgZHJpdmVyIGxv YWQgY29kZSB3ZSBkb24ndAo+IApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9k cmktZGV2ZWwK