From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Christian_K=c3=b6nig?= Subject: Re: [PATCH] drm/radeon: Retry DDC probing on DVI on failure if we got an HPD interrupt Date: Sat, 21 Nov 2015 15:22:07 +0100 Message-ID: <56507E0F.7030009@amd.com> References: <1448034740-30193-1-git-send-email-cpaul@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from na01-by2-obe.outbound.protection.outlook.com (mail-by2on0090.outbound.protection.outlook.com [207.46.100.90]) by gabe.freedesktop.org (Postfix) with ESMTPS id A5B326E0AA for ; Sat, 21 Nov 2015 06:36:48 -0800 (PST) In-Reply-To: <1448034740-30193-1-git-send-email-cpaul@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: cpaul@redhat.com, Alex Deucher , David Airlie , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Jerome Glisse , Benjamin Tissoires List-Id: dri-devel@lists.freedesktop.org T24gMjAuMTEuMjAxNSAxNjo1MiwgY3BhdWxAcmVkaGF0LmNvbSB3cm90ZToKPiBGcm9tOiBTdGVw aGVuIENoYW5kbGVyIFBhdWwgPGNwYXVsQHJlZGhhdC5jb20+Cj4KPiBIUEQgc2lnbmFscyBvbiBE VkkgcG9ydHMgY2FuIGJlIGZpcmVkIG9mZiBiZWZvcmUgdGhlIHBpbnMgcmVxdWlyZWQgZm9yCj4g RERDIHByb2JpbmcgYWN0dWFsbHkgbWFrZSBjb250YWN0LCBkdWUgdG8gdGhlIHBpbnMgZm9yIEhQ RCBtYWtpbmcKPiBjb250YWN0IGZpcnN0LiBUaGlzIHJlc3VsdHMgaW4gYSBIUEQgc2lnbmFsIGJl aW5nIGFzc2VydGVkIGJ1dCBEREMKPiBwcm9iaW5nIGZhaWxpbmcsIHJlc3VsdGluZyBpbiBob3Rw bHVnZ2luZyBvY2Nhc2lvbmFsbHkgZmFpbGluZy4KPgo+IFRoaXMgaXMgc29tZXdoYXQgcmFyZSBv biBtb3N0IGNhcmRzIChkZXBlbmRpbmcgb24gd2hhdCBhbmdsZSB5b3UgcGx1Zwo+IHRoZSBEVkkg Y29ubmVjdG9yIGluKSwgYnV0IG9uIHNvbWUgY2FyZHMgaXQgaGFwcGVucyBjb25zdGFudGx5LiBU aGUKPiBSYWRlb24gUjUgb24gdGhlIG1hY2hpbmUgdXNlZCBmb3IgdGVzdGluZyB0aGlzIHBhdGNo IGZvciBpbnN0YW5jZSwgcnVucwo+IGludG8gdGhpcyBpc3N1ZSBqdXN0IGFib3V0IGV2ZXJ5IHRp bWUgSSB0cnkgdG8gaG90cGx1ZyBhIERWSSBtb25pdG9yIGFuZAo+IGFzIGEgcmVzdWx0IGhvdHBs dWdnaW5nIGFsbW9zdCBuZXZlciB3b3Jrcy4KPgo+IFJlc2NoZWR1bGluZyB0aGUgaG90cGx1ZyB3 b3JrIGZvciBhIHNlY29uZCB3aGVuIHdlIHJ1biBpbnRvIGFuIEhQRAo+IHNpZ25hbCB3aXRoIGEg ZmFpbGluZyBEREMgcHJvYmUgdXN1YWxseSBnaXZlcyBlbm91Z2ggdGltZSBmb3IgdGhlIHJlc3QK PiBvZiB0aGUgY29ubmVjdG9yJ3MgcGlucyB0byBtYWtlIGNvbnRhY3QsIGFuZCBmaXhlcyB0aGlz IGlzc3VlLgo+Cj4gU2lnbmVkLW9mZi1ieTogU3RlcGhlbiBDaGFuZGxlciBQYXVsIDxjcGF1bEBy ZWRoYXQuY29tPgoKWWVhaCwgdGhhdCdzIHNvbWV0aGluZyBJIGFsd2F5cyB3b25kZXJlZCBhIGFi b3V0IGJpdCBhcyB3ZWxsLgoKRGVib3VuY2luZyBpcyBzb21ldGhpbmcgdmVyeSBjb21tb24gZG9u ZSBpbiBlbGVjdHJvbmljcywgYnV0IGFzIGZhciBhcyBJIAprbm93IHRoZSBIUEQgcGlucyBkb24n dCBuZWNlc3NhcnkgaGF2ZSBhbiBSQyBjaXJjdWl0IHNvIHdlIG1pZ2h0IG5lZWQgdG8gCmhhbmRs ZSB0aGlzIGNhc2UgaW4gc29mdHdhcmUgaGVyZS4KCkEgZGVsYXkgb2Ygc29tZXRoaW5nIGJldHdl ZW4gMTAtMzBtcyBiZXR3ZWVuIHRoZSBsYXN0IEhQRCBpbnRlcnJ1cHQgYW5kIApmdXJ0aGVyIHBy b2Nlc3Npbmcgb2YgdGhlIHNpZ25hbCBkb2Vzbid0IHNvdW5kcyBsaWtlIHN1Y2ggYSBiYWQgaWRl YS4KClJldHJ5aW5nIG9uIHRoZSBvdGhlciBoYW5kIGRvZXNuJ3QgbmVjZXNzYXJpbHkgaW1wcm92 ZSB0aGUgc2l0dWF0aW9uIApjYXVzZSB0aGUgZGVsYXkgaW50cm9kdWNlZCBieSB0aGlzIG1pZ2h0 IG5vdCBiZSBlbm91Z2guCgpTbyBJIHdvdWxkIHJhdGhlciB2b3RlIGZvciBhIGZpeGVkIGRlbGF5 IGJldHdlZW4gYW4gSFBEIGludGVycnVwdCBhbmQgCmFjdHVhbGx5IHN0YXJ0aW5nIHRvIHByb2Nl c3MgYW55dGhpbmcuCgpSZWdhcmRzLApDaHJpc3RpYW4uCgo+IC0tLQo+IFNvIHRoaXMgb25lIGhh cyBraW5kIG9mIGJlZW4gYSB0b3VnaCBzZWxsIHdpdGggSmVyb21lLCBtb3N0bHkgYmVjYXVzZSBp dCdzCj4gc29tZXdoYXQgb2YgYSBoYWNrLiBVbmZvcnR1bmF0ZWx5IGhvd2V2ZXIgSSd2ZSBtYW5h Z2VkIHRvIGZpbmQgbWFjaGluZXMgd2hlcmUKPiBEVkkgaG90cGx1Z2dpbmcgbGl0ZXJhbGx5IGRv ZXNuJ3Qgd29yayB3aXRob3V0IGEgcGF0Y2ggbGlrZSB0aGlzLiBXZSd2ZSBhbHJlYWR5Cj4gdHJp ZWQgYSBjb3VwbGUgb2Ygd2F5cyBvZiBoYW5kbGluZyB0aGUgc2l0dWF0aW9uIG9mIHJldHJpZ2dl cmluZyBkZGMgcHJvYmVzOgo+Cj4gKiBUcnlpbmcgdGhlIEREQyBwcm9iZSBpbiB0aGUgcmFkZW9u X2R2aV9kZXRlY3QoKSBmdW5jdGlvbiBtdWx0aXBsZSB0aW1lcy4KPiAqIFRyeWluZyB0byByZXNj aGVkdWxlIHRoZSBob3RwbHVnX3dvcmsgdGFzayB3aGVuZXZlciBEREMgcHJvYmluZyBmYWlscyBv biBEVkkKPiAgICBidXQgd2UgZ290IGEgaHBkIHNpZ25hbCAodGhpcyBlbmRlZCB1cCBiZWluZyBh IG11Y2ggbW9yZSBjb21wbGljYXRlZCBwYXRjaAo+ICAgIHRoZW4gYW50aWNpcGF0ZWQpCj4gKiBE b2luZyB3aGF0IHdlIGRvIHJpZ2h0IG5vdywgd2hpY2ggaXMganVzdCB0cmlnZ2VyaW5nIHVzZXJz cGFjZSB0byByZXNjYW4gYWxsCj4gICAgdGhlIHBvcnRzIHdoZW4gdGhlIGhwZCBzaWduYWwgaXMg YXNzZXJ0ZWQgYnkgdGhlIERWSSBwb3J0IGJ1dCB0aGVyZSdzIG5vIEREQwo+ICAgIHByb2JlLCBh bmQgcmVwZWF0aW5nIHVudGlsIGF0IGxlYXN0IGEgc2Vjb25kIHBhc3Nlcy4KPgo+IEFsbCBvZiB0 aGVzZSBhY3R1YWxseSB3b3JrLCBidXQgSSBndWVzcyBpdCdzIGEgcXVlc3Rpb24gb2Ygd2hpY2gg b25lIGlzIGxlc3Mgb2YKPiBhIGhhY2suIElmIGFueW9uZSBoZXJlIGNhbiB0aGluayBvZiBhIGNs ZWFuZXIgd2F5IG9mIGhhbmRsaW5nIHRoaXMgZmVlbCBmcmVlIHRvCj4gbGV0IG1lIGtub3cuCj4K PiAgIGRyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9uLmggICAgICAgICAgICB8ICAzICsrKwo+ ICAgZHJpdmVycy9ncHUvZHJtL3JhZGVvbi9yYWRlb25fY29ubmVjdG9ycy5jIHwgMjAgKysrKysr KysrKysrKysrKystLS0KPiAgIGRyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9uX2lycV9rbXMu YyAgICB8ICAyICsrCj4gICAzIGZpbGVzIGNoYW5nZWQsIDIyIGluc2VydGlvbnMoKyksIDMgZGVs ZXRpb25zKC0pCj4KPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL3JhZGVvbi9yYWRlb24u aCBiL2RyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9uLmgKPiBpbmRleCBiNmNiZDgxLi5kNjNm MGZlIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9uLmgKPiArKysg Yi9kcml2ZXJzL2dwdS9kcm0vcmFkZW9uL3JhZGVvbi5oCj4gQEAgLTI0NjAsNiArMjQ2MCw5IEBA IHN0cnVjdCByYWRlb25fZGV2aWNlIHsKPiAgIAkvKiBhbWRrZmQgaW50ZXJmYWNlICovCj4gICAJ c3RydWN0IGtmZF9kZXYJCSprZmQ7Cj4gICAKPiArCS8qIGxhc3QgdGltZSB3ZSByZWNlaXZlZCBh biBocGQgc2lnbmFsICovCj4gKwl1bnNpZ25lZCBsb25nIGhwZF90aW1lOwo+ICsKPiAgIAlzdHJ1 Y3QgbXV0ZXgJbW5fbG9jazsKPiAgIAlERUNMQVJFX0hBU0hUQUJMRShtbl9oYXNoLCA3KTsKPiAg IH07Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9uX2Nvbm5lY3Rv cnMuYyBiL2RyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9uX2Nvbm5lY3RvcnMuYwo+IGluZGV4 IDVhMmNhZmIuLjRlZTk0NDAgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL3JhZGVvbi9y YWRlb25fY29ubmVjdG9ycy5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL3JhZGVvbi9yYWRlb25f Y29ubmVjdG9ycy5jCj4gQEAgLTEyMjgsMTkgKzEyMjgsMzMgQEAgcmFkZW9uX2R2aV9kZXRlY3Qo c3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5lY3RvciwgYm9vbCBmb3JjZSkKPiAgIAljb25zdCBz dHJ1Y3QgZHJtX2VuY29kZXJfaGVscGVyX2Z1bmNzICplbmNvZGVyX2Z1bmNzOwo+ICAgCWludCBp LCByOwo+ICAgCWVudW0gZHJtX2Nvbm5lY3Rvcl9zdGF0dXMgcmV0ID0gY29ubmVjdG9yX3N0YXR1 c19kaXNjb25uZWN0ZWQ7Cj4gLQlib29sIGRyZXQgPSBmYWxzZSwgYnJva2VuX2VkaWQgPSBmYWxz ZTsKPiArCWJvb2wgZHJldCA9IGZhbHNlLCBicm9rZW5fZWRpZCA9IGZhbHNlLCBocGRfdW5jaGFu Z2VkOwo+ICAgCj4gICAJciA9IHBtX3J1bnRpbWVfZ2V0X3N5bmMoY29ubmVjdG9yLT5kZXYtPmRl dik7Cj4gICAJaWYgKHIgPCAwKQo+ICAgCQlyZXR1cm4gY29ubmVjdG9yX3N0YXR1c19kaXNjb25u ZWN0ZWQ7Cj4gICAKPiAtCWlmICghZm9yY2UgJiYgcmFkZW9uX2NoZWNrX2hwZF9zdGF0dXNfdW5j aGFuZ2VkKGNvbm5lY3RvcikpIHsKPiArCWhwZF91bmNoYW5nZWQgPSByYWRlb25fY2hlY2tfaHBk X3N0YXR1c191bmNoYW5nZWQoY29ubmVjdG9yKTsKPiArCWlmICghZm9yY2UgJiYgaHBkX3VuY2hh bmdlZCkgewo+ICAgCQlyZXQgPSBjb25uZWN0b3ItPnN0YXR1czsKPiAgIAkJZ290byBleGl0Owo+ ICAgCX0KPiAgIAo+IC0JaWYgKHJhZGVvbl9jb25uZWN0b3ItPmRkY19idXMpCj4gKwlpZiAocmFk ZW9uX2Nvbm5lY3Rvci0+ZGRjX2J1cykgewo+ICAgCQlkcmV0ID0gcmFkZW9uX2RkY19wcm9iZShy YWRlb25fY29ubmVjdG9yLCBmYWxzZSk7Cj4gKwo+ICsJCS8qIFNvbWV0aW1lcyB0aGUgcGlucyBy ZXF1aXJlZCBmb3IgdGhlIEREQyBwcm9iZSBvbiBEVkkKPiArCQkgKiBjb25uZWN0b3JzIGRvbid0 IG1ha2UgY29udGFjdCBhdCB0aGUgc2FtZSB0aW1lIHRoYXQgdGhlIG9uZXMKPiArCQkgKiBmb3Ig SFBEIGRvLiBJZiB0aGUgRERDIHByb2JlIGZhaWxzIGV2ZW4gdGhvdWdoIHdlIGhhZCBhbiBIUEQK PiArCQkgKiBzaWduYWwsIHNpZ25hbCB1c2Vyc3BhY2UgdG8gdHJ5IGFnYWluICovCj4gKwkJaWYg KCFkcmV0ICYmICFocGRfdW5jaGFuZ2VkICYmCj4gKwkJICAgIGNvbm5lY3Rvci0+c3RhdHVzICE9 IGNvbm5lY3Rvcl9zdGF0dXNfY29ubmVjdGVkICYmCj4gKwkJICAgIHRpbWVfYmVmb3JlKGppZmZp ZXMsIHJkZXYtPmhwZF90aW1lICsgbXNlY3NfdG9famlmZmllcygxMDAwKSkpIHsKPiArCQkJRFJN X0RFQlVHX0tNUygiJXM6IGhwZCBhc3NlcnRlZCBidXQgZGRjIHByb2JlIGZhaWxlZCwgcmV0cnlp bmdcbiIsCj4gKwkJCQkgICAgICBjb25uZWN0b3ItPm5hbWUpOwo+ICsJCQlkcm1fc3lzZnNfaG90 cGx1Z19ldmVudChkZXYpOwo+ICsJCX0KPiArCX0KPiAgIAlpZiAoZHJldCkgewo+ICAgCQlyYWRl b25fY29ubmVjdG9yLT5kZXRlY3RlZF9ieV9sb2FkID0gZmFsc2U7Cj4gICAJCXJhZGVvbl9jb25u ZWN0b3JfZnJlZV9lZGlkKGNvbm5lY3Rvcik7Cj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2Ry bS9yYWRlb24vcmFkZW9uX2lycV9rbXMuYyBiL2RyaXZlcnMvZ3B1L2RybS9yYWRlb24vcmFkZW9u X2lycV9rbXMuYwo+IGluZGV4IDE3MWQzZTQuLjU3OWMyMmMgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVy cy9ncHUvZHJtL3JhZGVvbi9yYWRlb25faXJxX2ttcy5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJt L3JhZGVvbi9yYWRlb25faXJxX2ttcy5jCj4gQEAgLTc5LDYgKzc5LDggQEAgc3RhdGljIHZvaWQg cmFkZW9uX2hvdHBsdWdfd29ya19mdW5jKHN0cnVjdCB3b3JrX3N0cnVjdCAqd29yaykKPiAgIAlz dHJ1Y3QgZHJtX21vZGVfY29uZmlnICptb2RlX2NvbmZpZyA9ICZkZXYtPm1vZGVfY29uZmlnOwo+ ICAgCXN0cnVjdCBkcm1fY29ubmVjdG9yICpjb25uZWN0b3I7Cj4gICAKPiArCXJkZXYtPmhwZF90 aW1lID0gamlmZmllczsKPiArCj4gICAJLyogd2UgY2FuIHJhY2UgaGVyZSBhdCBzdGFydHVwLCBz b21lIGJvYXJkcyBzZWVtIHRvIHRyaWdnZXIKPiAgIAkgKiBob3RwbHVnIGlycXMgd2hlbiB0aGV5 IHNob3VsZG4ndC4gKi8KPiAgIAlpZiAoIXJkZXYtPm1vZGVfaW5mby5tb2RlX2NvbmZpZ19pbml0 aWFsaXplZCkKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpo dHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg==