From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ramalingam C Subject: Re: [PATCH 4/5] drm/i915: Poll hdcp register on sudden NACK Date: Tue, 27 Feb 2018 20:06:12 +0530 Message-ID: References: <1519665159-28639-1-git-send-email-ramalingam.c@intel.com> <1519665159-28639-5-git-send-email-ramalingam.c@intel.com> <20180226175243.GY223881@art_vandelay> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180226175243.GY223881@art_vandelay> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Sean Paul Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org CgpPbiBNb25kYXkgMjYgRmVicnVhcnkgMjAxOCAxMToyMiBQTSwgU2VhbiBQYXVsIHdyb3RlOgo+ IE9uIE1vbiwgRmViIDI2LCAyMDE4IGF0IDEwOjQyOjM4UE0gKzA1MzAsIFJhbWFsaW5nYW0gQyB3 cm90ZToKPj4gSW4gYSBjb25uZWN0ZWQgc3RhdGUsIElmIGEgSERNSSBIRENQIHNpbmsgaXMgcmVz cG9uZGVkIHdpdGggTkFDSyBmb3IKPj4gSERDUCBJMkMgcmVnaXN0ZXIgYWNjZXNzLCB0aGVuIEhE TUkgSERDUCBzcGVjIG1hbmRhdGVzIHRoZSBwb2xsaW5nCj4+IG9mIGFueSBIRENQIHNwYWNlIHJl Z2lzdGVycyBmb3IgYWNjZXNzaWJpbGl0eSwgbWluaW11bSBvbmNlIGluIDJTZWNzCj4+IGF0bGVh c3QgZm9yIDRTZWNzLgo+Pgo+IEknbSBub3QgY29udmluY2VkIHRoaXMgaXMgdGhlIHJpZ2h0IHBs YWNlIHRvIGRvIHRoaXMuCj4KPiBUaGUgcmVhc29uIGlzIHRoYXQgdGhpcyBpcyBtb3JlIGNvbXBs ZXggdGhhbiBob3cgeW91IGhhdmUgaXQgYmVsb3cuIFlvdSBjYW4ndAo+IGFjY2VzcyBzdGF0ZSBv dXRzaWRlIG9mIGNoZWNrL2NvbW1pdCwgc28gcG9sbGluZyBzdGF0ZS0+Y29udGVudF9wcm90ZWN0 aW9uIGlzCj4gbm90IHBlcm1pc3NhYmxlIGZyb20gY2hlY2tfbGluay4gSWYgdGhlIGNoZWNrIGZh aWxzLCB0aGUgZHJpdmVyIHdpbGwgY2hhbmdlIHRoZQo+IGN1cnJlbnQgdmFsdWUgb2YgY29udGVu dF9wcm90ZWN0aW9uLCBzbyB1c2Vyc3BhY2Ugd2lsbCBiZSBhYmxlIHRvIHJldHJ5Lgo+Cj4gSW4g dGhlIGNhc2Ugb2YgZW5hYmxlLCBzaW5jZSBpdCdzIHN5bmNocm9ub3VzLCB0aGUgZXJyb3Igd2ls bCBiZSBwcm9wYWdhdGVkIHRvCj4gdXNlcnNwYWNlIGFuZCBpdCBjYW4gcmV0cnkgaWYgdGhhdCdz IHRoZSByaWdodCB0aGluZyB0byBkby4KClNlYW4sCgpJIGFtIG5vdCBncmFzcGluZyB0aGUgY29u Y2VybiBjbGVhcmx5LiBQbGVhc2UgaGVscCBtZSBvbiB0aGF0LgoKRG8geW91IHdhbnQgdG8gc2F5 IHdoeSBkbyB5b3Ugd2FudCB0byBwb2xsIHRoZSBoZGNwIHNwYWNlIHJlZ2lzdGVyJ3MgYXZhaWxh YmlsaXR5PwpCZWNhdXNlIHNwZWNpZmljYXRpb24gaXMgYXNraW5nIGZvciBpdC4gRnVuY3Rpb25h bGx5IGZyb20gb3VyIHVzZWNhc2UgcGVyc3BlY3RpdmUgbm8KZGlmZmVyZW5jZSB3aXRoIGFuZCB3 aXRob3V0IHRoaXMgTkFDSyBoYW5kbGluZy4KClJldHJ5IGZyb20gdXNlcnNwYWNlIHdpbGwgbm90 IGhlbHAgdG8gYWRkcmVzcyB0aGUgZmFpbHVyZXMgaW4gdGhlIENUUyB0ZXN0cyBtZW50aW9uZWQg YmVsb3cuCgpUaGlzIGNvdWxkIGJlIGRvbmUgd2l0aG91dCByZWZlcnJpbmcgY29ubmVjdG9yIHN0 YXRlLgoKLS1SYW0KCj4KPiBTZWFuCj4KPj4gSnVzdCB0byBtYWtlIGl0IHNpbXBsZSwgdGhpcyBp cyBnZW5lcmljYWxseSBpbXBsZW1lbnRlZCBmb3IgYm90aCBIRE1JCj4+IGFuZCBEUC4gQnV0IHdl IGRvbnQgZXhwZWN0IHRoYXQgdGhpcyBzY2FuYXJpbyB3aWxsIG9jY3VyIGZvciBEUC4KPj4KPj4g SERNSSBIRENQIENUUyBUZXN0czogMUEtMDQgYW5kIDFBLTA3QS4KPj4KPj4gU2lnbmVkLW9mZi1i eTogUmFtYWxpbmdhbSBDIDxyYW1hbGluZ2FtLmNAaW50ZWwuY29tPgo+PiAtLS0KPj4gICBkcml2 ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9oZGNwLmMgfCA3NCArKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKy0tLS0KPj4gICAxIGZpbGUgY2hhbmdlZCwgNjcgaW5zZXJ0aW9ucygrKSwg NyBkZWxldGlvbnMoLSkKPj4KPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2lu dGVsX2hkY3AuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkY3AuYwo+PiBpbmRleCA5 NTA4MWFhYTgzMmEuLjE0YmUxNGE0NWU1YSAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy9ncHUvZHJt L2k5MTUvaW50ZWxfaGRjcC5jCj4+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hk Y3AuYwo+PiBAQCAtMTYsNiArMTYsNDcgQEAKPj4gICAKPj4gICAjZGVmaW5lIEtFWV9MT0FEX1RS SUVTCTUKPj4gICAKPj4gK3N0YXRpYwo+PiArc3RydWN0IGludGVsX2RpZ2l0YWxfcG9ydCAqY29u bl90b19kaWdfcG9ydChzdHJ1Y3QgaW50ZWxfY29ubmVjdG9yICpjb25uZWN0b3IpCj4+ICt7Cj4+ ICsJcmV0dXJuIGVuY190b19kaWdfcG9ydCgmaW50ZWxfYXR0YWNoZWRfZW5jb2RlcigmY29ubmVj dG9yLT5iYXNlKS0+YmFzZSk7Cj4+ICt9Cj4+ICsKPj4gK3N0YXRpYyBpbmxpbmUgYm9vbCBoZGNw X3BvcnRfYWNjZXNzaWJsZShzdHJ1Y3QgaW50ZWxfY29ubmVjdG9yICpjb25uZWN0b3IpCj4+ICt7 Cj4+ICsJc3RydWN0IGludGVsX2RpZ2l0YWxfcG9ydCAqaW50ZWxfZGlnX3BvcnQgPSBjb25uX3Rv X2RpZ19wb3J0KGNvbm5lY3Rvcik7Cj4+ICsJaW50IHJldCA9IC1FTlhJTzsKPj4gKwl1OCBia3N2 W0RSTV9IRENQX0tTVl9MRU5dOwo+PiArCj4+ICsJcmV0ID0gY29ubmVjdG9yLT5oZGNwX3NoaW0t PnJlYWRfYmtzdihpbnRlbF9kaWdfcG9ydCwgYmtzdik7Cj4+ICsJaWYgKCFyZXQpCj4+ICsJCXJl dHVybiB0cnVlOwo+PiArCXJldHVybiBmYWxzZTsKPj4gK30KPj4gKwo+PiArc3RhdGljIGJvb2wg d2FpdF9mb3JfaGRjcF9wb3J0KHN0cnVjdCBpbnRlbF9jb25uZWN0b3IgKmNvbm5lY3RvcikKPj4g K3sKPj4gKwlpbnQgaSwgdHJpZXMgPSAxMDsKPj4gKwo+PiArCWZvciAoaSA9IDA7IGkgPCB0cmll czsgaSsrKSB7Cj4+ICsJCWlmIChjb25uZWN0b3ItPmJhc2Uuc3RhdHVzICE9IGNvbm5lY3Rvcl9z dGF0dXNfY29ubmVjdGVkIHx8Cj4+ICsJCSAgICBjb25uZWN0b3ItPmJhc2Uuc3RhdGUtPmNvbnRl bnRfcHJvdGVjdGlvbiA9PQo+PiArCQkgICAgRFJNX01PREVfQ09OVEVOVF9QUk9URUNUSU9OX1VO REVTSVJFRCB8fAo+PiArCQkgICAgY29ubmVjdG9yLT5oZGNwX3ZhbHVlID09Cj4+ICsJCSAgICBE Uk1fTU9ERV9DT05URU5UX1BST1RFQ1RJT05fVU5ERVNJUkVEKQo+PiArCQkJcmV0dXJuIGZhbHNl Owo+PiArCj4+ICsJCWlmIChoZGNwX3BvcnRfYWNjZXNzaWJsZShjb25uZWN0b3IpKQo+PiArCQkJ YnJlYWs7Cj4+ICsKPj4gKwkJbXNsZWVwX2ludGVycnVwdGlibGUoNTAwKTsKPj4gKwl9Cj4+ICsK Pj4gKwlpZiAoaSA9PSB0cmllcykKPj4gKwkJcmV0dXJuIGZhbHNlOwo+PiArCXJldHVybiB0cnVl Owo+PiArfQo+PiArCj4+ICAgc3RhdGljIGludCBpbnRlbF9oZGNwX3BvbGxfa3N2X2ZpZm8oc3Ry dWN0IGludGVsX2RpZ2l0YWxfcG9ydCAqaW50ZWxfZGlnX3BvcnQsCj4+ICAgCQkJCSAgICBjb25z dCBzdHJ1Y3QgaW50ZWxfaGRjcF9zaGltICpzaGltKQo+PiAgIHsKPj4gQEAgLTU4NCwxMiArNjI1 LDYgQEAgc3RhdGljIGludCBpbnRlbF9oZGNwX2F1dGgoc3RydWN0IGludGVsX2RpZ2l0YWxfcG9y dCAqaW50ZWxfZGlnX3BvcnQsCj4+ICAgCXJldHVybiAwOwo+PiAgIH0KPj4gICAKPj4gLXN0YXRp Ywo+PiAtc3RydWN0IGludGVsX2RpZ2l0YWxfcG9ydCAqY29ubl90b19kaWdfcG9ydChzdHJ1Y3Qg aW50ZWxfY29ubmVjdG9yICpjb25uZWN0b3IpCj4+IC17Cj4+IC0JcmV0dXJuIGVuY190b19kaWdf cG9ydCgmaW50ZWxfYXR0YWNoZWRfZW5jb2RlcigmY29ubmVjdG9yLT5iYXNlKS0+YmFzZSk7Cj4+ IC19Cj4+IC0KPj4gICBzdGF0aWMgaW50IF9pbnRlbF9oZGNwX2Rpc2FibGUoc3RydWN0IGludGVs X2Nvbm5lY3RvciAqY29ubmVjdG9yKQo+PiAgIHsKPj4gICAJc3RydWN0IGRybV9pOTE1X3ByaXZh dGUgKmRldl9wcml2ID0gY29ubmVjdG9yLT5iYXNlLmRldi0+ZGV2X3ByaXZhdGU7Cj4+IEBAIC03 MTksMTQgKzc1NCwyNiBAQCBpbnQgaW50ZWxfaGRjcF9pbml0KHN0cnVjdCBpbnRlbF9jb25uZWN0 b3IgKmNvbm5lY3RvciwKPj4gICAKPj4gICBpbnQgaW50ZWxfaGRjcF9lbmFibGUoc3RydWN0IGlu dGVsX2Nvbm5lY3RvciAqY29ubmVjdG9yKQo+PiAgIHsKPj4gLQlpbnQgcmV0Owo+PiArCWludCBy ZXQsIHRyaWVzID0gMjsKPj4gICAKPj4gICAJaWYgKCFjb25uZWN0b3ItPmhkY3Bfc2hpbSkKPj4g ICAJCXJldHVybiAtRU5PRU5UOwo+PiAgIAo+PiAgIAltdXRleF9sb2NrKCZjb25uZWN0b3ItPmhk Y3BfbXV0ZXgpOwo+PiAgIAo+PiArZW5hYmxlX2hkY3A6Cj4+ICAgCXJldCA9IF9pbnRlbF9oZGNw X2VuYWJsZShjb25uZWN0b3IpOwo+PiArCj4+ICsJLyoKPj4gKwkgKiBTdWRkZW5seSBpZiBzaW5r IGlzIE5BQ0stZWQgZm9yIHRoZSBhY2Nlc3Mgb2YgSERDUAo+PiArCSAqIHJlZ2lzdGVycywgYnV0 IGRpc3BsYXkgaXMgc3RpbGwgY29ubmVjdGVkLCBwb2xsIGZvciBoZGNwCj4+ICsJICogcG9ydCBh Y2Nlc3NpYmlsaXR5LiBPbmUgb2YgdGhlIEhEQ1Agc3BlYyByZXF1aXJlbWVudC4KPj4gKwkgKi8K Pj4gKwlpZiAoKHJldCA9PSAtRUlPIHx8IHJldCA9PSAtRU5YSU8pICYmCj4+ICsJICAgIGNvbm5l Y3Rvci0+YmFzZS5zdGF0dXMgPT0gY29ubmVjdG9yX3N0YXR1c19jb25uZWN0ZWQgJiYKPj4gKwkg ICAgIWhkY3BfcG9ydF9hY2Nlc3NpYmxlKGNvbm5lY3RvcikpCj4+ICsJCWlmICh3YWl0X2Zvcl9o ZGNwX3BvcnQoY29ubmVjdG9yKSAmJiAtLXRyaWVzKQo+PiArCQkJZ290byBlbmFibGVfaGRjcDsK Pj4gICAJaWYgKHJldCkKPj4gICAJCWdvdG8gb3V0Owo+PiAgIAo+PiBAQCAtODM4LDYgKzg4NSwx OSBAQCBpbnQgaW50ZWxfaGRjcF9jaGVja19saW5rKHN0cnVjdCBpbnRlbF9jb25uZWN0b3IgKmNv bm5lY3RvcikKPj4gICAJCWdvdG8gb3V0Owo+PiAgIAl9Cj4+ICAgCj4+ICsJLyoKPj4gKwkgKiBT dWRkZW5seSBpZiBzaW5rIGlzIE5BQ0stZWQgZm9yIHRoZSBhY2Nlc3Mgb2YgSERDUAo+PiArCSAq IHJlZ2lzdGVycywgYnV0IGRpc3BsYXkgaXMgc3RpbGwgY29ubmVjdGVkLCBwb2xsIGZvciBoZGNw Cj4+ICsJICogcG9ydCBhY2Nlc3NpYmlsaXR5LiBPbmUgb2YgdGhlIEhEQ1Agc3BlYyByZXF1aXJl bWVudC4KPj4gKwkgKi8KPj4gKwlpZiAoY29ubmVjdG9yLT5iYXNlLnN0YXR1cyA9PSBjb25uZWN0 b3Jfc3RhdHVzX2Nvbm5lY3RlZCAmJgo+PiArCSAgICAhaGRjcF9wb3J0X2FjY2Vzc2libGUoY29u bmVjdG9yKSkgewo+PiArCQltdXRleF91bmxvY2soJmNvbm5lY3Rvci0+aGRjcF9tdXRleCk7Cj4+ ICsJCWlmICghd2FpdF9mb3JfaGRjcF9wb3J0KGNvbm5lY3RvcikpCj4+ICsJCQlyZXR1cm4gcmV0 Owo+PiArCQltdXRleF9sb2NrKCZjb25uZWN0b3ItPmhkY3BfbXV0ZXgpOwo+PiArCX0KPj4gKwo+ PiAgIAlyZXQgPSBfaW50ZWxfaGRjcF9lbmFibGUoY29ubmVjdG9yKTsKPj4gICAJaWYgKHJldCkg ewo+PiAgIAkJRFJNX0VSUk9SKCJGYWlsZWQgdG8gZW5hYmxlIGhkY3AgKCVkKVxuIiwgcmV0KTsK Pj4gLS0gCj4+IDIuNy40Cj4+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9k cmktZGV2ZWwK