From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Peres Subject: Re: KMS backlight ABI proposition Date: Wed, 22 Feb 2017 17:18:24 +0200 Message-ID: <2334ca8b-9dc5-6fae-e453-c7ed57b9ceaf@linux.intel.com> References: <4b17ba08-39f3-57dd-5aad-d37d844b02c6@linux.intel.com> <14595a0f-f743-2714-b256-5886f450567a@linux.intel.com> <6f66a5a4-fddd-0230-c47e-5da3f40d99f7@linaro.org> <87mvdei7ug.fsf@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 412BB6E0FC for ; Wed, 22 Feb 2017 15:18:56 +0000 (UTC) In-Reply-To: <87mvdei7ug.fsf@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Jani Nikula , Daniel Thompson , Martin Peres , "dri-devel@lists.freedesktop.org" Cc: Hans de Goede , =?UTF-8?Q?Martin_Gr=c3=a4=c3=9flin?= , Lee Jones , plasma-devel@kde.org, Jingoo Han List-Id: dri-devel@lists.freedesktop.org T24gMjIvMDIvMTcgMTc6MDUsIEphbmkgTmlrdWxhIHdyb3RlOgo+IE9uIE1vbiwgMjAgRmViIDIw MTcsIERhbmllbCBUaG9tcHNvbiA8ZGFuaWVsLnRob21wc29uQGxpbmFyby5vcmc+IHdyb3RlOgo+ Pj4+ID09PSAxKSBCYWNrbGlnaHQgZGV2aWNlIGludGVyb3BlcmFiaWxpdHkgPT09Cj4+Pj4KPj4+ PiBTaW5jZSB3ZSBuZWVkIHRvIGtlZXAgYmFja3dhcmQgY29tcGF0aWJpbGl0eSBvZiB0aGUgYmFj a2xpZ2h0LCB3ZSBoYXZlCj4+Pj4gdG8ga2VlcCB0aGUgY3VycmVudCBiYWNrbGlnaHQgZHJpdmVy cy4KPj4+Pgo+Pj4+IEhlcmUgYXJlIHBvc3NpYmxlIG9wdGlvbnM6Cj4+Pj4KPj4+PiAgIC0gRXhj bHVzaXZlIGFjY2VzczogVW5yZWdpc3RlciBhIGJhY2tsaWdodCBkZXZpY2Ugd2hlbiB0aGUgZHJt Cj4+Pj4gYnJpZ2h0bmVzcyBwcm9wZXJ0eSBpcyByZXF1ZXN0ZWQvdXNlZDsKPj4+PiAgIC0gVW5p ZGlyZWN0aW9uYWwgYWNjZXNzOiBXaGVuIHdyaXRpbmcgdG8gdGhlIGJhY2tsaWdodCBwcm9wZXJ0 eSwgdXBkYXRlCj4+Pj4gdGhlIGJhY2tsaWdodCBkZXZpY2U7Cj4+Pj4gICAtIEJpLWRpcmVjdGlv bmFsIGFjY2VzczogUHJvcGFnYXRlIGJhY2sgY2hhbmdlcyBmcm9tIHRoZSBiYWNrbGlnaHQKPj4+ PiBkZXZpY2UgdG8gdGhlIHByb3BlcnR5J3MgdmFsdWUuCj4+Pj4KPj4+PiBCZWluZyBiaS1kaXJl Y3Rpb25hbCB3b3VsZCBiZSBvZiBjb3Vyc2UgdGhlIGJlc3QsIGJ1dCB0aGlzIHJlcXVpcmVzIHRo YXQKPj4+PiBib3RoIGRyaXZlcnMgaGF2ZSB0aGUgc2FtZSBudW1iZXIgb2Ygc3RlcHMsIG90aGVy d2lzZSwgd2UgbWF5IHdyaXRlIGEKPj4+PiB2YWx1ZSB0byB0aGUgcHJvcGVydHksIGJ1dCBnZXQg YW5vdGhlciBvbmUgd2hlbiByZWFkaW5nIGl0IHJpZ2h0IGFmdGVyLAo+Pj4+IGR1ZSB0byB0aGUg bm9uLWJpamVjdGl2ZSBuYXR1cmUgb2YgdGhlIHRyYW5zZm9ybWF0aW9uLgo+PiBJIGRvbid0IGFj Y2VwdCB0aGF0IGJpLWRpcmVjdGlvbmFsIHRyYW5zZmVyIHJlcXVpcmVzIHRoZSBzdGVwIHJhbmdl IHRvCj4+IGJlIHRoZSBzYW1lLiBJc24ndCBhbGwgdGhhdCBpcyByZXF1aXJlZCBpcyBhY2NlcHRh bmNlIHRoYXQgYm90aCBzaWRlcwo+PiBtYWludGFpbiBhIGNvcHkgb2YgdGhlIGN1cnJlbnQgdmFs dWUgaW4gdGhlaXIgb3duIG51bWJlciByYW5nZSBhbmQgdGhhdAo+PiBpZiBYIGlzIHdyaXR0ZW4g dG8gdGhlbiBZIG1heSBjaGFuZ2UgdmFsdWUgKGkuZS4gd2hlbiBtYXBwaW5nIGJldHdlZW4KPj4g MC4uMTAwIGFuZCAwLi4xMCB0aGVuIGlmIDAuLjEwMCBpcyBhdCAxMSBhbmQgMC4uMTAgZ2V0cyAx IHdyaXR0ZW4gdGhlbgo+PiAwLi4xMDAgaXMgYWxsb3dlZCB0byBjaGFuZ2UgdG8gMTApLgo+Pgo+ PiBJJ2Qgbm90ZSBhbHNvIHRoYXQgdGhlIG1lY2hhbmlzbXMgaW5zaWRlIGJhY2tsaWdodCB0byBz dXBwb3J0Cj4+IHN5c2ZzX25vdGlmeSB3b3VsZCBtZWFuICppbXBsZW1lbnRpbmcqIGJpLWRpcmVj dGlvbmFsIGNvbW1zIGlzbid0IHRvbwo+PiBibG9hdGVkIGV2ZW4gaWYgdGhlIHR3byBzaWRlcyB1 c2VkIGRpZmZlcmVudCBudW1iZXIgcmFuZ2VzLgo+IEkgcXVlc3Rpb24gdGhlIG5lZWQgYW5kIHVz ZWZ1bG5lc3Mgb2YgYmktZGlyZWN0aW9uYWwgYWNjZXNzLCBhbmQgSQo+IHF1ZXN0aW9uIGl0IGJl aW5nICJ0aGUgYmVzdCIuIFRoZSBlbmQgZ29hbCBpcyB0byB1c2UgdGhlIGNvbm5lY3Rvcgo+IHBy b3BlcnR5IGV4Y2x1c2l2ZWx5LCBhbmQgZGVwcmVjYXRlIHRoZSBzeXNmcyBBUEkuIElmIHlvdSBj aG9vc2UgdG8gdXNlCj4gdGhlIGNvbm5lY3RvciBwcm9wZXJ0eSwgeW91IHNob3VsZCBzdGVlciBj bGVhciBmcm9tIHRoZSBzeXNmcy4gVGhhdCdzCj4gcGFydCBvZiB0aGUgZGVhbCBoZXJlLgo+Cj4g VGhlIHN5c2ZzIHdpbGwgc3RpbGwgd29yayBhcyBldmVyLCBpdCB3b24ndCBicmVhayBvciByZWdy ZXNzIG9yIGdvIGF3YXkKPiBhbnl0aW1lIHNvb24sIGJ1dCB0aGUgQUJJIGFuZCBjb250cmFjdCBm b3IgdGhlIGNvbm5lY3RvciBwcm9wZXJ0eSB3aWxsCj4gYmUsICJpZiB5b3UgdG91Y2ggdGhlIHN5 c2ZzIHdoaWxlIHVzaW5nIHRoZSBjb25uZWN0b3IgcHJvcGVydHksIHlvdQo+IG1pZ2h0IGdldCB1 bmV4cGVjdGVkIHJlc3VsdHMgcmVhZGluZyBiYWNrIHRoZSBwcm9wZXJ0eSIuCj4KPiBUaGVyZSAq YXJlKiBnb2luZyB0byBiZSBzdWJ0bGUgYnVncyB3aXRoIHRoZSBzaW11bHRhbmVvdXMgb3BlcmF0 aW9uLCBhbmQKPiBJIGtub3cgSSBkb24ndCB3YW50IHRvIGJlIGluIHRoZSByZWNlaXZpbmcgZW5k IG9mIHRob3NlIGJ1Z3MuCj4KPiBSYWlzZSB5b3VyIGhhbmRzLCB3aG8gd2FudHMgdG8gZGVhbCB3 aXRoIHRoZW0/IFdobyB0aGlua3MgaXQncyB3b3J0aCBpdD8KPgo+Pj4+IFRoZSBjdXJyZW50IEFC SSBwcm9wb3NhbCBoYXMgbW9zdGx5IGJlZW4gcHJvcG9zZWQgYnkgSmFuaSBOaWt1bGEsIGFzIGEK Pj4+PiByZXN1bHQgb2YgaGlzIGV4cGVyaWVuY2UgYW5kIG91ciBkaXNjdXNzaW9ucy4KPj4+Pgo+ Pj4+IEl0IHRha2VzIHRoZSBmb2xsb3dpbmcgYXBwcm9hY2g6Cj4+Pj4KPj4+PiAgIC0gRml4ZWQg bnVtYmVyIG9mIHN0ZXBzIChJIHRoaW5rIHdlIHNob3VsZCBjaGFuZ2UgaXQgdG8gZXhwb3NlIHRo ZSBzYW1lCj4+Pj4gbnVtYmVyIG9mIHN0ZXBzKQo+PiBGaXhpbmcgYSBsYXJnZSBudW1iZXIgb2Yg c3RlcHMgb3ZlciBhbiBpbmZsZXhpYmxlIChsZXRzIHNheSA4IGxldmVsKQo+PiBiYWNrbGlnaHQg ZGV2aWNlIGNyZWF0ZXMgYSBuZXcgcHJvYmxlbS4gVXNlciBhY3Rpb25zIHRvCj4+IGluY3JlYXNl L2RlY3JlYXNlIHRoZSBiYWNrbGlnaHQgZG9uJ3Qgd29yayB1bmxlc3MgdGhlIHVzZXJzcGFjZSBr bm93cwo+PiB0aGUgaGFyZHdhcmUgc3RlcCBzaXplLi4uCj4gTWFueSBvZiB0aGUgQUNQSSBiYWNr bGlnaHQgaW50ZXJmYWNlcyBoYXZlIGEgbGltaXRlZCBudW1iZXIgb2Ygc3RlcHMsCj4gc3VjaCBh cyA4IG9yIDE2Lgo+Cj4gSG93ZXZlciwgYXQgbGVhc3QgZm9yIGk5MTUgbmF0aXZlIGJhY2tsaWdo dCwgd2UgbWlnaHQgKnRoZW9yZXRpY2FsbHkqCj4gaGF2ZSwgc2F5LCA1MDAwIHN0ZXBzLiBCdXQg d2UgbWlnaHQgaGF2ZSBubyBjbHVlIGhvdyBtYW55IHVzZXIKPiBwZXJjZWl2YWJsZSBkaXN0aW5j dCBzdGVwcyB0aGVyZSBhcmUuCj4KPj4gVGhlIDAuLjEwMCBwcm9wb3NhbCBiZWxvdyB3aWxsIGVu Y291cmFnZSB0aGUgdXNlcnNwYWNlIHRvIGltcGxlbWVudAo+PiBob3RrZXlzIHRoYXQganVtcCBi eSA5IChiZWNhdXNlIDAgaXMgcmVzZXJ2ZWQgd2l0aCBhIHNwZWNpYWwgbWVhbmluZykuCj4+IGFu ZCB0aHVzIHRoZXJlIHdpbGwgYmUgZGVhZHNwb3RzIHdoZXJlIHRoZSBob3Qga2V5IGhhcyBubyBl ZmZlY3QuCj4gT25lIGJyYWluc3Rvcm1lZCBpZGVhIHdhcyB0byBwcm92aWRlIGEgd2F5IHRvIGlu Y3JlYXNlL2RlY3JlYXNlIHRoZQo+IGJyaWdodG5lc3MgYnkgYSB1c2VyIHBlcmNlaXZhYmxlIG1h cmdpbiBvciBOJSwgd2hpY2hldmVyIGlzIHRoZSBiaWdnZXIKPiBjaGFuZ2UuIEkgZG9uJ3QgdGhp bmsgd2UgZXhwbG9yZWQgdGhhdCBpbiBkZXB0aCwgb3IgaG93IGZlYXNpYmxlIHRoYXQgaXMKPiB3 aXRoIHRoZSBwcm9wZXJ0aWVzLiBJdCBtaWdodCBub3Qgc29sdmUgZXZlcnl0aGluZywgYnV0IGl0 IGNvdWxkIHNvbHZlCj4gb25lIGNsYXNzIG9mIHByb2JsZW1zIHdpdGggZXhwYW5kaW5nIGEgbGlt aXRlZCBoYXJkd2FyZSByYW5nZSB0byAwLi4xMDAuCj4KPj4+PiAgIC0gVW5pLWRpcmVjdGlvbmFs OiBLTVMgLT4gYmFja2xpZ2h0Cj4+IFNlZSBhYm92ZS4KPj4KPj4KPj4+PiAgIC0gRG8gbm90IGRl YWwgeWV0IHdpdGggMykgYW5kIDQpOiBJIGhhdmUgaWRlYXMsIGJ1dCBJIGhhdmUgYmVlbgo+Pj4+ IHByb2NyYXN0aW5hdGluZyBsb25nLWVub3VnaCB0byBzZW5kIHRoaXMgZW1haWwgYW5kIHdlIGFs cmVhZHkgaGF2ZSBtdWNoCj4+Pj4gdG8gZGlzY3VzcyEKPj4gRG8gYW55IG9mIHRob3NlIGlkZWFz IGludm9sdmUgYWRkaW5nICpuZXcqIEFQSSB0byBwcm92aWRlIGluZm9ybWF0aW9uIHRvCj4+IHVz ZXJzcGFjZSB0byBoZWxwIGl0IGNvcnJlY3QgdGhlIGN1cnZlcyAoZS5nLiBzb21ld2hhdCBsaWtl IEFMU0EpPwo+Pgo+PiBJdCdzIG5vdCB0aGF0IEkgb2JqZWN0IHRvIHN1Y2ggYW4gYXBwcm9hY2gg YnV0IEkgY29uc2lkZXIgaXQgcG9pbnRsZXNzCj4+IHRvIHByZXNlbnQgZml4ZWQgcmFuZ2UgYnJp Z2h0bmVzcyBsZXZlbHMgaWYgdGhlIHVzZXJzcGFjZSB3ZXJlIHRvIGVuZCB1cAo+PiByZXNwb25z aWJsZSBmb3IgY3VydmUgY29ycmVjdGlvbi4KPiBPbmUgb2YgdGhlIGlkZWFzIHdlJ3ZlIGRpc2N1 c3NlZCBpcyBoYXZpbmcgYSBwcm9wZXJ0eSB0byBhZGp1c3QgdGhlCj4gY3VydmUgaW4ga2VybmVs LiBJZiB0aGUgZHJpdmVyIGtub3dzIHBhcmFtZXRlcnMgb2YgdGhlIGJhY2tsaWdodCwgaXQKPiBj b3VsZCBwb3B1bGF0ZSB0aGUgY3VydmUgd2l0aCB0aGUgaW5mb3JtYXRpb24gaXQgaGFzLCBidXQg aXQgd291bGQgYWxsb3cKPiB0aGUgdXNlcnNwYWNlIHRvIGFkanVzdCBvciByZXBsYWNlIGl0LiBU aGUgaWRlYSBpcyB0aGF0IHRoZSB1c2Vyc3BhY2UKPiBjb3VsZCB0aGVuIHRyZWF0IHRoZSBicmln aHRuZXNzIHByb3BlcnR5IGFzIGxpbmVhciB3cnQgcGVyY2VpdmVkCj4gYnJpZ2h0bmVzcy4gKCJQ ZXJjZWl2ZWQgYnJpZ2h0bmVzcyIgaXMga2luZCBvZiB2YWd1ZSB0b28sIGJ1dCBsZXQncyBub3QK PiBnbyB0aGVyZSBqdXN0IHlldC4pCgpPbmUgd2F5IHdvdWxkIGJlIHRvIGp1c3QgZXhwb3NlIGEg dGFibGUgY29udGFpbmluZyB0cmlwIHBvaW50cyB3aXRoCmtub3duIChyYXdfdmFsdWUsIGx1bWlu YW5jZSAlKSBwb2ludHMuIFRoZSB1c2Vyc3BhY2UgbWF5IGp1c3QKYWxsb3cgY2hhbmdpbmcgYmV0 d2VlbiB0aGVtIG9yIG1heSB3YW50IHRvIGludGVycG9sYXRlIGlmIGl0IG5lZWRzCm1vcmUgdHJp cCBwb2ludHMuIFRoaXMgd2F5LCB3ZSBkb24ndCBoYXZlIHRvIGRlYWwgd2l0aCBhbnkgY3VydmVz IGluCnRoZSBrZXJuZWwgc3BhY2UuCgpJZiB0aGlzIHRhYmxlIHdlcmUgdXNlci13cml0YWJsZSwg dGhpcyB3b3VsZCBhbGxvdyBwZW9wbGUgdG8gY2FsaWJyYXRlCnRoZWlyIG1vbml0b3IsIGFzIHdh bnRlZCAodXNpbmcgYSBjb2xvdXJodWcsIG9yIHdoYXRldmVyKS4KCj4KPj4+PiAgIC0gRG9lcyBu b3QgZXhwb3NlIHRoZSBjdXJyZW50IGJhY2tsaWdodCBwb3dlciBhcyB3ZSB3YW50IHRvIGxldCB0 aGUKPj4+PiBrZXJuZWwgZGVhbCB3aXRoIERQTVMgb24gaXRzIG93bgo+PiAgID4+Cj4+Pj4gPT09 IEFCSSBwcm9wb3NhbCA9PT0KPj4+Pgo+Pj4+IFRoZSBicmlnaHRuZXNzIHByb3BlcnR5IE1VU1Qg aGF2ZSB2YWx1ZXMgMC4uLjEwMCBpbmNsdXNpdmUuCj4+IEknbSBzb21ld2hhdCB1bmNvbnZpbmNl ZCBieSByZS1yYW5naW5nIHRoZSBoYXJkd2FyZSBjYXBhYmlsaXR5IGJ1dCBpZgo+PiB0aGlzIGlz IHRoZSB3YXkgd2Ugd2FudCB0byBnbyBwZXJoYXBzIGNvbnNpZGVyIC0xLi4xMDAgYXMgdGhlIHJh bmdlLgo+PiBUaGVyZSdzIGEgcmlzayBvZiBiaWtlc2hlZGRpbmcgaGVyZSBidXQgLTEgaXMgYSBt b3JlIG9idmlvdXMgInNwZWNpYWwiCj4+IHZhbHVlIGFuZCBpdCBvZmZlcnMgbW9yZSBmbGV4aWJp bGl0eSBmb3IgbmF0dXJhbCBob3RrZXkgc3RyaWRlcy4KPiBUaGVyZSBzb21lIGJlbmVmaXRzIGZv ciAicmUtcmFuZ2luZyIgdGhlIGhhcmR3YXJlIHJhbmdlOgo+Cj4gKiBJdCBtYWtlcyBzZW5zZSBm b3IgaGFyZHdhcmUgcmFuZ2VzIHRoYXQgaGF2ZSBmYXIgbW9yZSBzdGVwcyB0aGFuIGNhbgo+ICAg IGJlIHBlcmNlaXZlZC4gV2h5IGV4cG9zZSA1MDAwIHN0ZXBzIHdoZW4geW91IGNhbiBwZXJjZWl2 ZSwgc2F5LCBhCj4gICAgY291cGxlIG9mIGh1bmRyZWQgbGV2ZWxzLCBpZiB0aGF0LiBBbmQgdGhl IHVzZXJzcGFjZSB3aWxsIG9ubHkgdXNlCj4gICAgbWF5YmUgdGVuIHN0ZXBzLgo+Cj4gKiBTb21l IFBXTSBiYXNlZCBiYWNrbGlnaHQgYWxsb3cgYWRqdXN0aW5nIHRoZSBQV00gbW9kdWxhdGlvbgo+ ICAgIGZyZXF1ZW5jeS4gSXQgY291bGQgYmUgZG9uZSBvbiB0aGUgZmx5LiBJdCB3b3VsZCBiZSBh d2t3YXJkIHRvIGNoYW5nZQo+ICAgIHRoZSBtYXggb24gdGhlIGZseTsgbm90IHN1cmUgaWYgaXQn cyBldmVuIHBvc3NpYmxlIGZvciBwcm9wZXJ0aWVzLgo+Cj4gKiBUaGVyZSdzIHRoZSBpZGVhIG9m IGxldHRpbmcgdXNlcnNwYWNlIHJlLWFzc29jaWF0ZSB0aGUgYnJpZ2h0bmVzcwo+ICAgIHByb3Bl cnRpZXMgd2l0aCB0aGUgdW5kZXJseWluZyBoYXJkd2FyZS4gVGhlIG1heCBtaWdodCBjaGFuZ2Uu IFNlZQo+ICAgIHByZXZpb3VzIHBvaW50LiBBbnkgc29sdXRpb24gbXVzdCBhZGRyZXNzIHRoaXMu CgpBaCwgcmlnaHQhIEkgaGFkIGZvcmdvdHRlbiBhYm91dCB0aGlzIQoKV2hhdCBJIHNhaWQgd2Fz IHRoYXQgc2luY2UgaXQgaXMgYSByYXJlIGV2ZW50LCB3ZSBjb3VsZCBpc3N1ZQphIGhvdHBsdWcg ZXZlbnQgdG8gd29yayBhcm91bmQgdGhpcyBpc3N1ZS4gVGhlIHVzZXJzcGFjZSB3b3VsZApiZSBm b3JjZWQgdG8gcmUtcHJvYmUuCgo+Cj4gV2UgY2FuIGJpa2VzaGVkIHRoZSBtZWFuaW5nIG9mIDAg b3IgLTEsIEkgZG9uJ3QgbWluZC4gVGhlIHBvaW50IGlzLCB3ZQo+IG5lZWQgdG8gZGVmaW5lIHdo YXQgdGhlIGRyaXZlcnMgc2hvdWxkIGFpbSBmb3IsIHdpdGggdGhlIHBvdGVudGlhbGx5Cj4gbGlt aXRlZCBpbmZvcm1hdGlvbiB0aGV5IGhhdmUgYXZhaWxhYmxlLCB0byBwcm92aWRlIGFzIHNtb290 aCBhbmQKPiB1bmlmaWVkIGFuIGV4cGVyaWVuY2UgYXMgcG9zc2libGUuCj4KPiBPbmUgYmVuZWZp dCBvZiAtMSBpcyB0aGF0IHdlIG1pZ2h0IGdldCBhd2F5IHdpdGggYWRkaW5nIHRoYXQgYXMgYQo+ IHNwZWNpYWwgY2FzZSBsYXRlciBvbiwgaWYgd2UgZGVmaW5lIDAgcHJvcGVybHkuIEFuZCBpZiB0 aGUgZHJpdmVycyBrbm93Cj4gdGhleSBkb24ndCBzdXBwb3J0IG9mZiwgdGhleSBjb3VsZCBoYXZl IHJhbmdlIDAuLjEwMCBpbnN0ZWFkLgoKWWVhaCwgLTEgaXMgYSBnb29kIGlkZWEuCgo+Cj4KPiBC UiwKPiBKYW5pLgo+Cj4KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9w Lm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1k ZXZlbAo=