From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH] drm/i915: customize DPCD brightness control for specific panel Date: Tue, 08 Oct 2019 12:19:23 +0300 Message-ID: <87pnj7h9wk.fsf@intel.com> References: <20191004215851.31446-1-shawn.c.lee@intel.com> <33dcaf669eae3acfc3b716e68b69c0fe76dd2dbc.camel@redhat.com> <87d0fce4mh.fsf@intel.com> <877e5gj52f.fsf@intel.com> <75105bb4d3c4ea37aaf53144be5d644f998f3626.camel@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <75105bb4d3c4ea37aaf53144be5d644f998f3626.camel@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Adam Jackson , "20191004215851.31446-1-shawn.c.lee@intel.com" <20191004215851.31446-1-shawn.c.lee@intel.com>, "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" Cc: "Chiou, Cooper" , Gustavo Padovan List-Id: intel-gfx@lists.freedesktop.org T24gTW9uLCAwNyBPY3QgMjAxOSwgQWRhbSBKYWNrc29uIDxhamF4QHJlZGhhdC5jb20+IHdyb3Rl Ogo+IE9uIE1vbiwgMjAxOS0xMC0wNyBhdCAxMjowOCArMDMwMCwgSmFuaSBOaWt1bGEgd3JvdGU6 Cj4KPj4gVGhlIHByb2JsZW0gd2l0aCB0aGUgRURJRCBxdWlya3MgaXMgdGhhdCBleHBvc2luZyB0 aGUgcXVpcmtzIHN0aWNrcyBvdXQKPj4gbGlrZSBhIHNvcmUgdGh1bWIuIFRodXMgZmFyIGFsbCBv ZiBpdCBoYXMgYmVlbiBjb250YWluZWQgaW4gZHJtX2VkaWQuYwo+PiBhbmQgdGhleSBhZmZlY3Qg aG93IHRoZSBFRElEIGdldHMgcGFyc2VkLCBmb3IgYWxsIGRyaXZlcnMuIE9idmlvdXNseQo+PiB0 aGlzIGNvdWxkIGJlIGNoYW5nZWQsIGJ1dCBpcyBpdCB0aGUgcmlnaHQgdGhpbmcgdG8gZG8/Cj4+ IAo+PiBXaGF0IEkgc3VnZ2VzdGVkIHdhcywgY2hlY2sgdGhlIE9VSSBvbmx5LCBhbmQgaWYgaXQg bWF0Y2hlcywgZG8KPj4gbW9yZS4gUGVyaGFwcyB0aGVyZSdzIHNvbWV0aGluZyBpbiB0aGUgMHgz MDAgcmFuZ2Ugb2YgRFBDRCBvZmZzZXRzIHRoYXQKPj4geW91IGNhbiByZWFkPyBPciBwZXJoYXBz IHlvdSBuZWVkIHRvIHdyaXRlIHRoZSBzb3VyY2UgT1VJIGZpcnN0LCBhbmQKPj4gdGhlbiBkbyB0 aGF0Lgo+Cj4gTXkgaXNzdWUgaXNuJ3QgcmVhbGx5IHdpdGggaWRlbnRpZnlpbmcgdGhlIHBhbmVs IGZyb20gRURJRCByYXRoZXIgdGhhbgo+IERQQ0QsIHdoaWNoZXZlciBpZGVudGlmaWVyIGlzIG1v c3Qgc3BlY2lmaWMgaXMgcHJvYmFibHkgdGhlIGJlc3QgdGhpbmcKPiB0byB1c2UuIEl0J3MgbW9y ZSB0aGF0IHRoaXMgcXVpcmsgaXMgaWRlbnRpZmllZCBpbiBjb21tb24gY29kZSBidXQgb25seQo+ IGFwcGxpZWQgaW4gb25lIGRyaXZlci4gSWYgdGhpcyBwYW5lbCB3ZXJlIGV2ZXIgdG8gYmUgYXR0 YWNoZWQgdG8gc29tZQo+IG90aGVyIHNvdXJjZSwgdGhleSBtaWdodCB3ZWxsIHdhbnQgdG8gYXBw bHkgdGhlIHNhbWUga2luZCBvZiBmaXguIE15Cj4gKGFkbWl0dGVkbHkgbmHDr3ZlKSByZWFkaW5n IG9mIHRoZSBPVUkgaGFuZHNoYWtlIHByb2Nlc3MgaXMgdGhhdCB3aGVuCj4gdGhlIHNvdXJjZSBk ZXZpY2Ugd3JpdGVzIGFuIE9VSSB0byBEUF9TT1VSQ0VfT1VJIGl0IGlzIHRlbGxpbmcgdGhlIHNp bmsKPiAiSSdtIGFib3V0IHRvIGlzc3VlIGNvbW1hbmRzIHRoYXQgY29uZm9ybSB0byBfdGhpc18g dmVuZG9yJ3Mgb3duCj4gY29udmVudGlvbnMiLiBJZiB0aGF0IGNvbnZlbnRpb24gY29tbXVuaWNh dGVzIGluZm9ybWF0aW9uIHRoYXQgaXMKPiBlbnRpcmVseSBjb250YWluZWQgd2l0aGluIEFVWENI IHRyYW5zYWN0aW9ucyAoYW5kIGRvZXNuJ3QsIGZvciBleGFtcGxlLAo+IHJlcXVpcmUgbG9va2lu ZyBhdCBzb21lIG90aGVyIHN0cmFwcGluZyBwaW4gb3IgZXh0ZXJuYWwgZGV2aWNlKSB0aGVuIGlu Cj4gcHJpbmNpcGxlIGl0IGRvZXNuJ3QgbWF0dGVyIGlmIHRoZSBzb3VyY2UgZGV2aWNlICJtYXRj aGVzIiB0aGF0IE9VSTsgaXQKPiB3b3VsZCBiZSBsZWdhbCBmb3IgYW4gQU1EIEdQVSB0byB3cml0 ZSB0aGUgc2FtZSBzZXF1ZW5jZSBhbmQgZXhwZWN0IHRoZQo+IHNhbWUgcmVhY3Rpb24sIHNob3Vs ZCB0aGF0IHBhbmVsIGJlIGF0dGFjaGVkIHRvIGFuIEFNRCBHUFUuCj4KPiBTbywgaXQgd291bGQg YmUgbmljZSB0byBrbm93IGV4YWN0bHkgd2hhdCB0aGF0IHByb3RvY29sIGlzIG1lYW50IHRvIGRv LAo+IGlmIGl0IGFwcGxpZXMgb25seSB0byB0aGlzIHNwZWNpZmljIHBhbmVsIG9yIGFueXRoaW5n IGVsc2Ugd2l0aCB0aGUKPiBzYW1lIFRDT04sIGhvdyBvbmUgd291bGQgaWRlbnRpZnkgc3VjaCBU Q09OcyBpbiB0aGUgd2lsZCBvdGhlciB0aGFuCj4gRURJRCwgaWYgaXQgcmVsaWVzIG9uIGFuIGV4 dGVybmFsIFBXTSBvciBzb21ldGhpbmcsIGV0Yy4gQW5kIGl0IG1pZ2h0Cj4gbWFrZSBzZW5zZSBm b3Igbm93IHRvIG1ha2UgdGhpcyBhIChzaHVkZGVyKSBkcml2ZXItc3BlY2lmaWMgRURJRCBxdWly awo+IHJhdGhlciB0aGFuIG1hdGNoIGJ5IERQQ0QsIGF0IGxlYXN0IHVudGlsIHdlIGtub3cgaWYg dGhlIHBhbmVsIGlzIGV2ZXIKPiBzZWVuIGF0dGFjaGVkIHRvIG90aGVyIHNvdXJjZSBkZXZpY2Vz IGFuZCBpZiB0aGUgT1VJIGNvbnZlbnRpb24gaXMKPiBzZWxmLWNvbnRhaW5lZC4KClRoYW5rcyBm b3IgY2xhcmlmeWluZy4gUHJldHR5IG11Y2ggYWdyZWVkLCB1bmZvcnR1bmF0ZWx5IGFsc28gb24g dGhlCiJ3b3VsZCBiZSBuaWNlIHRvIGtub3cgbW9yZSIgcGFydC4uLgoKSWYgdGhpcyB3ZXJlIHRv IGJlIGFuIEVESUQgcXVpcmsgYWZ0ZXIgYWxsLCBJIHdvbmRlciBpZiBpdCB3b3VsZCBiZQpiZXR0 ZXIgdG8gc3RvcmUgdGhlIHBhcnNlZCBxdWlya3MgdG8sIHNheSwgc3RydWN0IGRybV9kaXNwbGF5 X2luZm8sIGFuZApoYXZlIGEgZHJtX2Nvbm5lY3Rvcl9oYXNfcXVpcmsoKSBmdW5jdGlvbiBzaW1p bGFyIHRvIGRybV9kcF9oYXNfcXVpcmsoKS4KClRoaXMgd291bGQgYWxzbyBhbGxvdyB1cyB0byBu b3QgcmV0dXJuIHF1aXJrcyBmcm9tCmRybV9hZGRfZGlzcGxheV9pbmZvKCksIHdoaWNoIHdvdWxk IGFyZ3VhYmx5IGNsZWFuIHVwIHRoZSBpbnRlcmZhY2UuCgpCUiwKSmFuaS4KCgotLSAKSmFuaSBO aWt1bGEsIEludGVsIE9wZW4gU291cmNlIEdyYXBoaWNzIENlbnRlcgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0Cklu dGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5v cmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZng=