From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH 4/6] drm/i915/psr: Avoid unnecessary DPCD read of DP_PSR_CAPS Date: Thu, 24 May 2018 17:01:41 +0300 Message-ID: <874lixjgoq.fsf@intel.com> References: <20180511195145.3829-1-dhinakaran.pandiyan@intel.com> <20180511195145.3829-4-dhinakaran.pandiyan@intel.com> <20180520230147.GA113651@otc-chromeosbuild-5> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id A1C9E6E68C for ; Thu, 24 May 2018 13:57:45 +0000 (UTC) In-Reply-To: <20180520230147.GA113651@otc-chromeosbuild-5> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Tarun Vyas , Dhinakaran Pandiyan Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gU3VuLCAyMCBNYXkgMjAxOCwgVGFydW4gVnlhcyA8dGFydW4udnlhc0BpbnRlbC5jb20+IHdy b3RlOgo+IE9uIEZyaSwgTWF5IDExLCAyMDE4IGF0IDEyOjUxOjQzUE0gLTA3MDAsIERoaW5ha2Fy YW4gUGFuZGl5YW4gd3JvdGU6Cj4+IGludGVsX2RwLT5wc3JfZHBjZCBhbHJlYWR5IGhhcyB0aGUg cmVxdWlyZWQgdmFsdWVzLgo+PiAKPj4gQ2M6IEpvc2UgUm9iZXJ0byBkZSBTb3V6YSA8am9zZS5z b3V6YUBpbnRlbC5jb20+Cj4+IFNpZ25lZC1vZmYtYnk6IERoaW5ha2FyYW4gUGFuZGl5YW4gPGRo aW5ha2FyYW4ucGFuZGl5YW5AaW50ZWwuY29tPgo+PiAtLS0KPj4gIGRyaXZlcnMvZ3B1L2RybS9p OTE1L2ludGVsX3Bzci5jIHwgMTEgKy0tLS0tLS0tLS0KPj4gIDEgZmlsZSBjaGFuZ2VkLCAxIGlu c2VydGlvbigrKSwgMTAgZGVsZXRpb25zKC0pCj4+IAo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9n cHUvZHJtL2k5MTUvaW50ZWxfcHNyLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wc3Iu Ywo+PiBpbmRleCA2MWFkZTgxNTc2ZjUuLjM4MWRiZGJmMzBmNCAxMDA2NDQKPj4gLS0tIGEvZHJp dmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcHNyLmMKPj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfcHNyLmMKPj4gQEAgLTIwMSwxNSArMjAxLDYgQEAgdm9pZCBpbnRlbF9wc3JfaXJx X2hhbmRsZXIoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LCB1MzIgcHNyX2lpcikK Pj4gIAl9Cj4+ICB9Cj4+ICAKPj4gLXN0YXRpYyBib29sIGludGVsX2RwX2dldF95X2Nvb3JkX3Jl cXVpcmVkKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHApCj4+IC17Cj4+IC0JdWludDhfdCBwc3Jf Y2FwcyA9IDA7Cj4+IC0KPj4gLQlpZiAoZHJtX2RwX2RwY2RfcmVhZGIoJmludGVsX2RwLT5hdXgs IERQX1BTUl9DQVBTLCAmcHNyX2NhcHMpICE9IDEpCj4+IC0JCXJldHVybiBmYWxzZTsKPj4gLQly ZXR1cm4gcHNyX2NhcHMgJiBEUF9QU1IyX1NVX1lfQ09PUkRJTkFURV9SRVFVSVJFRDsKPj4gLX0K Pj4gLQo+PiAgc3RhdGljIGJvb2wgaW50ZWxfZHBfZ2V0X2NvbG9yaW1ldHJ5X3N0YXR1cyhzdHJ1 Y3QgaW50ZWxfZHAgKmludGVsX2RwKQo+PiAgewo+PiAgCXVpbnQ4X3QgZHByeCA9IDA7Cj4+IEBA IC0yNzUsNyArMjY2LDcgQEAgdm9pZCBpbnRlbF9wc3JfaW5pdF9kcGNkKHN0cnVjdCBpbnRlbF9k cCAqaW50ZWxfZHApCj4+ICAJCSAqIEdUQyBmaXJzdC4KPj4gIAkJICovCj4+ICAJCWRldl9wcml2 LT5wc3Iuc2lua19wc3IyX3N1cHBvcnQgPQo+PiAtCQkJCWludGVsX2RwX2dldF95X2Nvb3JkX3Jl cXVpcmVkKGludGVsX2RwKTsKPj4gKwkJCWludGVsX2RwLT5wc3JfZHBjZFsxXSAmIERQX1BTUjJf U1VfWV9DT09SRElOQVRFX1JFUVVJUkVEOwo+PiAgCQlEUk1fREVCVUdfS01TKCJQU1IyICVzc3Vw cG9ydGVkXG4iLAo+PiAgCQkJICAgICAgZGV2X3ByaXYtPnBzci5zaW5rX3BzcjJfc3VwcG9ydCA/ ICIiIDogIm5vdCAiKTsKPiBUaGUgZHJtX2RwX2RwY2RfcmVhZCBpdHNlbGYgcmVhZHMgdGhlIGZp cnN0IDIgUFNSIERQQ0QgYnl0ZXMgd2hpY2ggaXMgd2hhdCBpcyBuZWVkZWQuIEFsc28sIG5vIG90 aGVyIGNhbGxlcnMgb2YgaW50ZWxfZHBfZ2V0X3lfY29vcmRfcmVxdWlyZWQgZXhpc3QuIFNvLAo+ Cj4gUmV2aWV3ZWQtYnk6IFRhcnVuIFZ5YXMgPHRhcnVuLnZ5YXNAaW50ZWwuY29tPgoKVGhlIHJl c3Qgb2YgdGhlIHBhdGNoZXMgaW4gdGhlIHNlcmllcyBwdXNoZWQgdG8gZGlucSBhcyB3ZWxsLCB0 aGFua3MgZm9yCnRoZSBwYXRjaGVzIGFuZCByZXZpZXcuCgpCUiwKSmFuaS4KCj4+ICAKPj4gLS0g Cj4+IDIuMTQuMQo+PiAKPj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KPj4gSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdAo+PiBJbnRlbC1nZnhAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCj4+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlz dGluZm8vaW50ZWwtZ2Z4Cj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KPiBJbnRlbC1nZnggbWFpbGluZyBsaXN0Cj4gSW50ZWwtZ2Z4QGxpc3RzLmZyZWVk ZXNrdG9wLm9yZwo+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vaW50ZWwtZ2Z4CgotLSAKSmFuaSBOaWt1bGEsIEludGVsIE9wZW4gU291cmNlIEdyYXBoaWNz IENlbnRlcgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJ bnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0 cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK