From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sivakumar Thulasimani Subject: Re: [PATCH 1/2] drm/i915: Read sink_count dpcd always for short hpd Date: Thu, 20 Aug 2015 11:55:44 +0530 Message-ID: <55D572E8.6060903@intel.com> References: <1439815909-6996-1-git-send-email-sivakumar.thulasimani@intel.com> <1439815909-6996-2-git-send-email-sivakumar.thulasimani@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 0650289CDE for ; Wed, 19 Aug 2015 23:26:08 -0700 (PDT) In-Reply-To: <1439815909-6996-2-git-send-email-sivakumar.thulasimani@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org, ville.syrjala@linux.intel.com, jani.nikula@linux.intel.com List-Id: intel-gfx@lists.freedesktop.org ZHJvcHBpbmcgdGhpcyBwYXRjaCBhcyBpIHVuZGVyc3Rvb2QgbW9yZSBhYm91dApTSU5LX0NPVU5U IGRwY2QgYW5kIERPV05TVFJFQU1fUE9SVF9QUkVTRU5UIGRwY2QuCndpbGwgdXBsb2FkIGEgbmV3 IHNlcmllcyB3aXRoIHByb3BlciBmaXguCgpPbiA4LzE3LzIwMTUgNjoyMSBQTSwgU2l2YWt1bWFy IFRodWxhc2ltYW5pIHdyb3RlOgo+IEZyb206ICJUaHVsYXNpbWFuaSxTaXZha3VtYXIiIDxzaXZh a3VtYXIudGh1bGFzaW1hbmlAaW50ZWwuY29tPgo+Cj4gQ29tcGxpYW5jZSB0ZXN0IDQuMi4yLjgg cmVxdWlyZXMgZHJpdmVyIHRvIHJlYWQgdGhlIHNpbmtfY291bnQgZm9yCj4gc2hvcnQgcHVsc2Ug aW50ZXJydXB0IGV2ZW4gd2hlbiB0aGUgcGFuZWwgaXMgbm90IGVuYWJsZWQuCj4gVGhpcyBwYXRj aCBwZXJmb3JtcyB0aGUgZm9sbG93aW5nCj4gYSkgcmVhZGluZyBzaW5rX2NvdW50IGJ5IHJldXNp bmcgaW50ZWxfZHBfZGV0ZWN0X2RwY2QKPiBpbnN0ZWFkIG9mIHVzaW5nIGludGVsX2RwX2dldF9k cGNkCj4gYikgbW92aW5nIGNydGMgZW5hYmxlZCBjaGVja3MgcG9zdCBzaW5rX2NvdW50IHJlYWQg Y2FsbAo+Cj4gdjI6IGF2b2lkIGNvZGUgbW92ZW1lbnQgd2l0aCBmdW5jdGlvbmFsaXR5IGNoYW5n ZXMgKFZpbGxlKQo+Cj4gU2lnbmVkLW9mZi1ieTogU2l2YWt1bWFyIFRodWxhc2ltYW5pIDxzaXZh a3VtYXIudGh1bGFzaW1hbmlAaW50ZWwuY29tPgo+IC0tLQo+ICAgZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfZHAuYyB8ICAgMjAgKysrKysrKysrKysrLS0tLS0tLS0KPiAgIDEgZmlsZSBjaGFu Z2VkLCAxMiBpbnNlcnRpb25zKCspLCA4IGRlbGV0aW9ucygtKQo+Cj4gZGlmZiAtLWdpdCBhL2Ry aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2RwLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRl bF9kcC5jCj4gaW5kZXggYjkwNWMxOS4uMGI3M2U5OCAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dw dS9kcm0vaTkxNS9pbnRlbF9kcC5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf ZHAuYwo+IEBAIC0xMzIsNiArMTMyLDggQEAgc3RhdGljIHZvaWQgZWRwX3BhbmVsX3ZkZF9vZmYo c3RydWN0IGludGVsX2RwICppbnRlbF9kcCwgYm9vbCBzeW5jKTsKPiAgIHN0YXRpYyB2b2lkIHZs dl9pbml0X3BhbmVsX3Bvd2VyX3NlcXVlbmNlcihzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwKTsK PiAgIHN0YXRpYyB2b2lkIHZsdl9zdGVhbF9wb3dlcl9zZXF1ZW5jZXIoc3RydWN0IGRybV9kZXZp Y2UgKmRldiwKPiAgIAkJCQkgICAgICBlbnVtIHBpcGUgcGlwZSk7Cj4gK3N0YXRpYyBlbnVtIGRy bV9jb25uZWN0b3Jfc3RhdHVzCj4gK2ludGVsX2RwX2RldGVjdF9kcGNkKHN0cnVjdCBpbnRlbF9k cCAqaW50ZWxfZHApOwo+ICAgCj4gICBzdGF0aWMgaW50Cj4gICBpbnRlbF9kcF9tYXhfbGlua19i dyhzdHJ1Y3QgaW50ZWxfZHAgICppbnRlbF9kcCkKPiBAQCAtNDM2MiwyMSArNDM2NCwyMyBAQCBp bnRlbF9kcF9jaGVja19saW5rX3N0YXR1cyhzdHJ1Y3QgaW50ZWxfZHAgKmludGVsX2RwKQo+ICAg Cj4gICAJV0FSTl9PTighZHJtX21vZGVzZXRfaXNfbG9ja2VkKCZkZXYtPm1vZGVfY29uZmlnLmNv bm5lY3Rpb25fbXV0ZXgpKTsKPiAgIAo+IC0JaWYgKCFpbnRlbF9lbmNvZGVyLT5iYXNlLmNydGMp Cj4gKwkvKiA0LjIuMi44IHJlcXVpcmVzIHNvdXJjZSB0byByZWFkIGxpbmtfc3RhdHVzLCAwIC0g MTIgRFBDRCAmCj4gKwkgKiBzaW5rX2NvdW50IGV2ZW4gZm9yIHNob3J0IHB1bHNlIGlycmVzcGVj dGl2ZSBvZiB0aGUgc2luayBpcwo+ICsJICogaW4gdXNlIG9yIG5vdAo+ICsJICovCj4gKwlpZiAo IWludGVsX2RwX2dldF9saW5rX3N0YXR1cyhpbnRlbF9kcCwgbGlua19zdGF0dXMpKSB7Cj4gICAJ CXJldHVybjsKPiArCX0KPiAgIAo+IC0JaWYgKCF0b19pbnRlbF9jcnRjKGludGVsX2VuY29kZXIt PmJhc2UuY3J0YyktPmFjdGl2ZSkKPiArCS8qIHJldXNlIHRvIHJlYWQgYm90aCAwIC0gMTIgRFBD RCAmIHNpbmtfY291bnQgKi8KPiArCWlmIChpbnRlbF9kcF9kZXRlY3RfZHBjZChpbnRlbF9kcCkg IT0gY29ubmVjdG9yX3N0YXR1c19jb25uZWN0ZWQpCj4gICAJCXJldHVybjsKPiAgIAo+IC0JLyog VHJ5IHRvIHJlYWQgcmVjZWl2ZXIgc3RhdHVzIGlmIHRoZSBsaW5rIGFwcGVhcnMgdG8gYmUgdXAg Ki8KPiAtCWlmICghaW50ZWxfZHBfZ2V0X2xpbmtfc3RhdHVzKGludGVsX2RwLCBsaW5rX3N0YXR1 cykpIHsKPiArCWlmICghaW50ZWxfZW5jb2Rlci0+YmFzZS5jcnRjKQo+ICAgCQlyZXR1cm47Cj4g LQl9Cj4gICAKPiAtCS8qIE5vdyByZWFkIHRoZSBEUENEIHRvIHNlZSBpZiBpdCdzIGFjdHVhbGx5 IHJ1bm5pbmcgKi8KPiAtCWlmICghaW50ZWxfZHBfZ2V0X2RwY2QoaW50ZWxfZHApKSB7Cj4gKwlp ZiAoIXRvX2ludGVsX2NydGMoaW50ZWxfZW5jb2Rlci0+YmFzZS5jcnRjKS0+YWN0aXZlKQo+ICAg CQlyZXR1cm47Cj4gLQl9Cj4gICAKPiAgIAkvKiBUcnkgdG8gcmVhZCB0aGUgc291cmNlIG9mIHRo ZSBpbnRlcnJ1cHQgKi8KPiAgIAlpZiAoaW50ZWxfZHAtPmRwY2RbRFBfRFBDRF9SRVZdID49IDB4 MTEgJiYKCi0tIApyZWdhcmRzLApTaXZha3VtYXIKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxp c3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4v bGlzdGluZm8vaW50ZWwtZ2Z4Cg==