From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Kahola Subject: Re: [v3] drm/i915: Add detection of changing of edid on between suspend and resume Date: Mon, 13 Aug 2018 13:55:47 +0300 Message-ID: <1534157747.30780.19.camel@intel.com> References: <20180803163453.7760-1-gwan-gyeong.mun@intel.com> <20180809111330.5113-1-gwan-gyeong.mun@intel.com> <919efd746382923946f9f443909cec65590ffc37.camel@intel.com> Reply-To: mika.kahola@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <919efd746382923946f9f443909cec65590ffc37.camel@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: "Lisovskiy, Stanislav" , "Mun, Gwan-gyeong" , "jani.nikula@linux.intel.com" Cc: "airlied@linux.ie" , "intel-gfx@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "Vivi, Rodrigo" List-Id: dri-devel@lists.freedesktop.org T24gRnJpLCAyMDE4LTA4LTEwIGF0IDEzOjAyICswMDAwLCBMaXNvdnNraXksIFN0YW5pc2xhdiB3 cm90ZToKPiBPbiBUaHUsIDIwMTgtMDgtMDkgYXQgMTQ6MTMgKzAzMDAsIEd3YW4tZ3llb25nIE11 biB3cm90ZToKPiA+IAo+ID4gVGhlIGhvdHBsdWcgZGV0ZWN0aW9uIHJvdXRpbmUgb2YgaTkxNSB1 c2VzCj4gPiBkcm1faGVscGVyX2hwZF9pcnFfZXZlbnQoKS4gVGhpcwo+ID4gaGVscGVyIGNhbiBk ZXRlY3QgY2hhbmdpbmcgb2Ygc3RhdHVzIG9mIGNvbm5lY3RvciwgYnV0IGl0IGNhbiBub3QKPiA+ IGRldGVjdAo+ID4gY2hhbmdpbmcgb2YgZWRpZC4KPiA+IAo+ID4gRm9sbG93aW5nIHNjZW5hcmlv IHJlcXVpcmVzIGRldGVjdGlvbiBvZiBjaGFuZ2luZyBvZiBlZGlkLgo+ID4gCj4gPiDCoDEpIHBs dWcgZGlzcGxheSBkZXZpY2UgdG8gYSBjb25uZWN0b3IKPiA+IMKgMikgc3lzdGVtIHN1c3BlbmQK PiA+IMKgMykgdW5wbHVnIDEpJ3MgZGlzcGxheSBkZXZpY2UgYW5kIHBsdWcgdGhlIG90aGVyIGRp c3BsYXkgZGV2aWNlIHRvCj4gPiBhCj4gPiBjb25uZWN0b3IKPiA+IMKgNCkgc3lzdGVtIHJlc3Vt ZQo+ID4gCj4gPiBJdCBhZGRzIGVkaWQgY2hlY2sgcm91dGluZSB3aGVuIGEgY29ubmVjdG9yIHN0 YXR1cyBzdGlsbCByZW1haW5zIGFzCj4gPiAiY29ubmVjdG9yX3N0YXR1c19jb25uZWN0ZWQiLgo+ ID4gCj4gPiB2MjogQWRkIE5VTEwgY2hlY2sgYmVmb3JlIGNvbXBhcmluZyBvZiBFRElEcy4KPiA+ IAo+ID4gVGVzdGNhc2U6IGlndC9rbXNfY2hhbWVsaXVtL2hkbWktZWRpZC1jaGFuZ2UtZHVyaW5n LWhpYmVybmF0ZQo+ID4gVGVzdGNhc2U6IGlndC9rbXNfY2hhbWVsaXVtL2hkbWktZWRpZC1jaGFu Z2UtZHVyaW5nLXN1c3BlbmQKPiA+IFRlc3RjYXNlOiBpZ3Qva21zX2NoYW1lbGl1bS9kcC1lZGlk LWNoYW5nZS1kdXJpbmctaGliZXJuYXRlCj4gPiBUZXN0Y2FzZTogaWd0L2ttc19jaGFtZWxpdW0v ZHAtZWRpZC1jaGFuZ2UtZHVyaW5nLXN1c3BlbmQKPiA+IAo+ID4gU2lnbmVkLW9mZi1ieTogR3dh bi1neWVvbmcgTXVuIDxnd2FuLWd5ZW9uZy5tdW5AaW50ZWwuY29tPgo+ID4gLS0tCj4gPiDCoGRy aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hvdHBsdWcuYyB8IDg0Cj4gPiArKysrKysrKysrKysr KysrKysrKysrKysrKystCj4gPiDCoDEgZmlsZSBjaGFuZ2VkLCA4MyBpbnNlcnRpb25zKCspLCAx IGRlbGV0aW9uKC0pCj4gPiAKPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p bnRlbF9ob3RwbHVnLmMKPiA+IGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaG90cGx1Zy5j Cj4gPiBpbmRleCA2NDhhMTNjNjA0M2MuLjk2NWYyZDc3MWZjMCAxMDA2NDQKPiA+IC0tLSBhL2Ry aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hvdHBsdWcuYwo+ID4gKysrIGIvZHJpdmVycy9ncHUv ZHJtL2k5MTUvaW50ZWxfaG90cGx1Zy5jCj4gPiBAQCAtNTA3LDYgKzUwNyw4OCBAQCB2b2lkIGlu dGVsX2hwZF9pbml0KHN0cnVjdCBkcm1faTkxNV9wcml2YXRlCj4gPiAqZGV2X3ByaXYpCj4gPiDC oAl9Cj4gPiDCoH0KPiA+IMKgCj4gPiArLyoqCj4gPiArICogaW50ZWxfaHBkX2lycV9ldmVudCAt IGhvdHBsdWcgcHJvY2Vzc2luZwo+ID4gKyAqIEBkZXY6IGRybV9kZXZpY2UKPiA+ICsgKgo+ID4g KyAqIERyaXZlcnMgY2FuIHVzZSB0aGlzIGZ1bmN0aW9uIHRvIHJ1biBhIGRldGVjdCBjeWNsZSBv biBhbGwKPiA+IGNvbm5lY3RvcnMgd2hpY2gKPiA+ICsgKiBoYXZlIHRoZSBEUk1fQ09OTkVDVE9S X1BPTExfSFBEIGZsYWcgc2V0IGluIHRoZWlyICZwb2xsZWQKPiA+IG1lbWJlci4KPiA+IEFsbCBv dGhlcgo+ID4gKyAqIGNvbm5lY3RvcnMgYXJlIGlnbm9yZWQsIHdoaWNoIGlzIHVzZWZ1bCB0byBh dm9pZCByZXByb2JpbmcKPiA+IGZpeGVkCj4gPiBwYW5lbHMuCj4gPiArICoKPiA+ICsgKiBUaGlz IGZ1bmN0aW9uIGlzIHVzZWZ1bCBmb3IgZHJpdmVycyB3aGljaCBjYW4ndCBvciBkb24ndCB0cmFj awo+ID4gaG90cGx1ZyBpbnRlcnJ1cHRzCj4gPiArICogZm9yIGVhY2ggY29ubmVjdG9yLiBUaGlz IGZ1bmN0aW9uIGlzIGJhc2VkIG9uCj4gPiBkcm1faGVscGVyX2hwZF9pcnFfZXZlbnQoKSBoZWxw ZXIKPiA+ICsgKiBmdW5jdGlvbiBhbmQgYmVzaWRlcyBpdCBhZGRzIGVkaWQgY2hlY2sgcm91dGlu ZSB3aGVuIGEKPiA+IGNvbm5lY3Rvcgo+ID4gc3RhdHVzIHN0aWxsCj4gPiArICogcmVtYWlucyBh cyAiY29ubmVjdG9yX3N0YXR1c19jb25uZWN0ZWQiLgo+ID4gKyAqCj4gPiArICogRm9sbG93aW5n IHNjZW5hcmlvIHJlcXVpcmVzIGRldGVjdGlvbiBvZiBjaGFuZ2luZyBvZiBlZGlkLgo+ID4gKyAq wqDCoDEpIHBsdWcgZGlzcGxheSBkZXZpY2UgdG8gYSBjb25uZWN0b3IKPiA+ICsgKsKgwqAyKSBz eXN0ZW0gc3VzcGVuZAo+ID4gKyAqwqDCoDMpIHVucGx1ZyAxKSdzIGRpc3BsYXkgZGV2aWNlIGFu ZCBwbHVnIHRoZSBvdGhlciBkaXNwbGF5Cj4gPiBkZXZpY2UKPiA+IHRvIGEgY29ubmVjdG9yCj4g PiArICrCoMKgNCkgc3lzdGVtIHJlc3VtZQo+ID4gKwo+ID4gKyAqIFRoaXMgZnVuY3Rpb24gbXVz dCBiZSBjYWxsZWQgZnJvbSBwcm9jZXNzIGNvbnRleHQgd2l0aCBubyBtb2RlCj4gPiArICogc2V0 dGluZyBsb2NrcyBoZWxkLgo+ID4gKyAqCj4gPiArICogTm90ZSB0aGF0IGEgY29ubmVjdG9yIGNh biBiZSBib3RoIHBvbGxlZCBhbmQgcHJvYmVkIGZyb20gdGhlCj4gPiBob3RwbHVnIGhhbmRsZXIs Cj4gPiArICogaW4gY2FzZSB0aGUgaG90cGx1ZyBpbnRlcnJ1cHQgaXMga25vd24gdG8gYmUgdW5y ZWxpYWJsZS4KPiA+ICsgKi8KPiA+ICtzdGF0aWMgYm9vbCBpbnRlbF9ocGRfaXJxX2V2ZW50KHN0 cnVjdCBkcm1fZGV2aWNlICpkZXYpCj4gPiArewo+ID4gKwlzdHJ1Y3QgZHJtX2Nvbm5lY3RvciAq Y29ubmVjdG9yOwo+ID4gKwlzdHJ1Y3QgZHJtX2Nvbm5lY3Rvcl9saXN0X2l0ZXIgY29ubl9pdGVy Owo+ID4gKwllbnVtIGRybV9jb25uZWN0b3Jfc3RhdHVzIG9sZF9zdGF0dXMsIGN1cl9zdGF0dXM7 Cj4gPiArCXN0cnVjdCBlZGlkICpvbGRfZWRpZDsKPiA+ICsJYm9vbCBjaGFuZ2VkID0gZmFsc2U7 Cj4gPiArCj4gPiArCWlmICghZGV2LT5tb2RlX2NvbmZpZy5wb2xsX2VuYWJsZWQpCj4gPiArCQly ZXR1cm4gZmFsc2U7Cj4gPiArCj4gPiArCW11dGV4X2xvY2soJmRldi0+bW9kZV9jb25maWcubXV0 ZXgpOwo+ID4gKwlkcm1fY29ubmVjdG9yX2xpc3RfaXRlcl9iZWdpbihkZXYsICZjb25uX2l0ZXIp Owo+ID4gKwlkcm1fZm9yX2VhY2hfY29ubmVjdG9yX2l0ZXIoY29ubmVjdG9yLCAmY29ubl9pdGVy KSB7Cj4gPiArCQkvKiBPbmx5IGhhbmRsZSBIUEQgY2FwYWJsZSBjb25uZWN0b3JzLiAqLwo+ID4g KwkJaWYgKCEoY29ubmVjdG9yLT5wb2xsZWQgJiBEUk1fQ09OTkVDVE9SX1BPTExfSFBEKSkKPiA+ ICsJCQljb250aW51ZTsKPiA+ICsKPiA+ICsJCW9sZF9zdGF0dXMgPSBjb25uZWN0b3ItPnN0YXR1 czsKPiA+ICsJCW9sZF9lZGlkID0gdG9faW50ZWxfY29ubmVjdG9yKGNvbm5lY3RvciktCj4gPiA+ IAo+ID4gPiBkZXRlY3RfZWRpZDsKPiA+ICsKPiA+ICsJCWN1cl9zdGF0dXMgPSBkcm1faGVscGVy X3Byb2JlX2RldGVjdChjb25uZWN0b3IsCj4gPiBOVUxMLCBmYWxzZSk7Cj4gPiArCQlEUk1fREVC VUdfS01TKCJbQ09OTkVDVE9SOiVkOiVzXSBzdGF0dXMgdXBkYXRlZAo+ID4gZnJvbQo+ID4gJXMg dG8gJXNcbiIsCj4gPiArCQkJwqDCoMKgwqDCoMKgY29ubmVjdG9yLT5iYXNlLmlkLCBjb25uZWN0 b3ItPm5hbWUsCj4gPiArCQkJwqDCoMKgwqDCoMKgZHJtX2dldF9jb25uZWN0b3Jfc3RhdHVzX25h bWUob2xkX3N0Cj4gPiBhdAo+ID4gdXMpLAo+ID4gKwkJCcKgwqDCoMKgwqDCoGRybV9nZXRfY29u bmVjdG9yX3N0YXR1c19uYW1lKGN1cl9zdAo+ID4gYXQKPiA+IHVzKSk7Cj4gPiArCj4gPiArCQlp ZiAob2xkX3N0YXR1cyAhPSBjdXJfc3RhdHVzKQo+ID4gKwkJCWNoYW5nZWQgPSB0cnVlOwo+ID4g Kwo+ID4gKwkJLyogQ2hlY2sgY2hhbmdpbmcgb2YgZWRpZCB3aGVuIGEgY29ubmVjdG9yIHN0YXR1 cwo+ID4gc3RpbGwgcmVtYWlucwo+ID4gKwkJwqAqIGFzICJjb25uZWN0b3Jfc3RhdHVzX2Nvbm5l Y3RlZCIuCj4gPiArCQnCoCovCj4gPiArCQlpZiAob2xkX3N0YXR1cyA9PSBjdXJfc3RhdHVzICYm Cj4gPiArCQnCoMKgwqDCoGN1cl9zdGF0dXMgPT0gY29ubmVjdG9yX3N0YXR1c19jb25uZWN0ZWQp IHsKPiA+ICsJCQlzdHJ1Y3QgZWRpZCAqY3VyX2VkaWQgPQo+ID4gdG9faW50ZWxfY29ubmVjdG9y KGNvbm5lY3RvciktPmRldGVjdF9lZGlkOwo+ID4gKwo+ID4gKwkJCWlmICghb2xkX2VkaWQgfHwg IWN1cl9lZGlkKQo+ID4gKwkJCQljb250aW51ZTsKPiA+ICsKPiA+ICsJCQlpZiAobWVtY21wKG9s ZF9lZGlkLCBjdXJfZWRpZCwKPiA+IHNpemVvZigqY3VyX2VkaWQpKSkgewo+ID4gKwkJCQljaGFu Z2VkID0gdHJ1ZTsKPiA+ICsJCQkJRFJNX0RFQlVHX0tNUygiW0NPTk5FQ1RPUjolZDolc10KPiA+ IGVkaWQgdXBkYXRlZFxuIiwKPiA+ICsJCQkJCcKgwqDCoMKgwqDCoGNvbm5lY3Rvci0+YmFzZS5p ZCwKPiA+ICsJCQkJCcKgwqDCoMKgwqDCoGNvbm5lY3Rvci0+bmFtZSk7Cj4gPiArCQkJfQo+ID4g KwkJfQo+ID4gKwl9Cj4gPiArCWRybV9jb25uZWN0b3JfbGlzdF9pdGVyX2VuZCgmY29ubl9pdGVy KTsKPiA+ICsJbXV0ZXhfdW5sb2NrKCZkZXYtPm1vZGVfY29uZmlnLm11dGV4KTsKPiA+ICsKPiA+ ICsJaWYgKGNoYW5nZWQpCj4gPiArCQlkcm1fa21zX2hlbHBlcl9ob3RwbHVnX2V2ZW50KGRldik7 Cj4gPiArCj4gPiArCXJldHVybiBjaGFuZ2VkOwo+ID4gK30KPiA+ICsKPiA+IMKgc3RhdGljIHZv aWQgaTkxNV9ocGRfcG9sbF9pbml0X3dvcmsoc3RydWN0IHdvcmtfc3RydWN0ICp3b3JrKQo+ID4g wqB7Cj4gPiDCoAlzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYgPQo+ID4gQEAgLTU1 Miw3ICs2MzQsNyBAQCBzdGF0aWMgdm9pZCBpOTE1X2hwZF9wb2xsX2luaXRfd29yayhzdHJ1Y3QK PiA+IHdvcmtfc3RydWN0ICp3b3JrKQo+ID4gwqAJwqAqIGluIHRoZSBtaWRkbGUgb2YgZGlzYWJs aW5nIHBvbGxpbmcKPiA+IMKgCcKgKi8KPiA+IMKgCWlmICghZW5hYmxlZCkKPiA+IC0JCWRybV9o ZWxwZXJfaHBkX2lycV9ldmVudChkZXYpOwo+ID4gKwkJaW50ZWxfaHBkX2lycV9ldmVudChkZXYp Owo+ID4gwqB9Cj4gSnVzdCB3b25kZXJpbmcsIGFzIEkgc2F3IHByZXZpb3VzbHkgZHJtX2hlbHBl cl9ocGRfaXJxX2V2ZW50IGZ1bmN0aW9uCj4gd2FzIHVzZWQsIHdoaWNoIGJhc2ljYWxseSBkb2Vz IHRoZSBzYW1lIHRoaW5nLCBleGNlcHQgZG9pbmcgbWVtY21wCj4gZm9yIGRldGVjdGluZyB0aGUg ZWRpZCBjaGFuZ2UuIElzIGl0IG9ubHkgSW50ZWwgc3BlY2lmaWMgY2hhbmdlPyBBcwo+IHdlCj4g Y291bGQganVzdCBhZGQgdGhpcyBtb2RpZmljYXRpb24gdG8gZXhpc3RpbmcgaGVscGVyIGZ1bmN0 aW9uIG9yIGFkZAo+IGFub3RoZXIgaGVscGVyIGZ1bmN0aW9uIHRvIHRoZSBkcm0gKGRybV9wcm9i ZV9oZWxwZXIuYyksIHNvIHRoYXQgaXQKPiBpcwo+IGFsc28gdXNhYmxlIGVsc2V3aGVyZS4uCkkg c2Vjb25kIFN0YW5pc2xhdidzIHByb3Bvc2FsIHRvIGFkZCB0aGlzIGZlYXR1cmUgYXMgcGFydCBv ZiBkcm0uIFRoaXMKZWRpZCBjaGVjayBjb3VsZCBiZSBwYXJ0IG9mIGV4aXN0aW5nIGRybV9oZWxw ZXJfaHBkX2lycV9ldmVudCgpCmZ1bmN0aW9uLiBPdGhlciBkcml2ZXJzIG1pZ2h0IGZpbmQgdGhp cyBjaGFuZ2UgdXNlZnVsLgoKPiAKPiA+IAo+ID4gwqAKPiA+IMKgLyoqCj4gLS3CoAo+IEJlc3Qg UmVnYXJkcywKPiAKPiBMaXNvdnNraXkgU3RhbmlzbGF2Cj4gX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KPiBJbnRlbC1nZnggbWFpbGluZyBsaXN0Cj4gSW50 ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwo+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Au b3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Ci0tIApNaWthIEthaG9sYSAtIEludGVsIE9U QwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwt Z2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8v bGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==