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Fri, 13 Dec 2019 16:09:23 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 13 Dec 2019 16:09:34 +0800 Message-ID: <1576224575.13335.1.camel@mtksdaap41> Subject: Re: [PATCH v2, 1/2] drm/mediatek: Fix gamma correction issue From: CK Hu To: Yongqiang Niu CC: Philipp Zabel , Rob Herring , Matthias Brugger , "David Airlie" , Daniel Vetter , Mark Rutland , , , , , Date: Fri, 13 Dec 2019 16:09:35 +0800 In-Reply-To: <1576224191.31822.2.camel@mhfsdcap03> References: <1576222132-31586-1-git-send-email-yongqiang.niu@mediatek.com> <1576222132-31586-2-git-send-email-yongqiang.niu@mediatek.com> <1576223336.9817.3.camel@mtksdaap41> <1576224191.31822.2.camel@mhfsdcap03> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: E0C81D5B10B64C1A208C0F2484C5E394387DD294A1723E0D5353D5CFEA9397FD2000:8 X-MTK: N Content-Transfer-Encoding: base64 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org SGksIFlvbmdxaWFuZzoNCg0KT24gRnJpLCAyMDE5LTEyLTEzIGF0IDE2OjAzICswODAwLCBZb25n cWlhbmcgTml1IHdyb3RlOg0KPiBPbiBGcmksIDIwMTktMTItMTMgYXQgMTU6NDggKzA4MDAsIENL IEh1IHdyb3RlOg0KPiA+IEhpLCBZb25ncWlhbmc6DQo+ID4gDQo+ID4gVGhlIHRpdGxlIGlzIHRv byByb3VnaC4gQW55IGJ1ZyBvZiBnYW1tYSB3b3VsZCBiZSB0aGlzIHRpdGxlLiBJIHdvdWxkDQo+ ID4gbGlrZSB0aGUgdGl0bGUgc2hvdyBleHBsaWNpdGx5IHdoYXQgaXQgZG9lcy4NCj4gPiANCj4g PiBPbiBGcmksIDIwMTktMTItMTMgYXQgMTU6MjggKzA4MDAsIFlvbmdxaWFuZyBOaXUgd3JvdGU6 DQo+ID4gPiBpZiB0aGVyZSBpcyBubyBnYW1tYSBmdW5jdGlvbiBpbiB0aGUgY3J0Yw0KPiA+ID4g ZGlzcGxheSBwYXRoLCBkb24ndCBhZGQgZ2FtbWEgcHJvcGVydHkNCj4gPiA+IGZvciBjcnRjDQo+ ID4gPiANCj4gPiA+IFNpZ25lZC1vZmYtYnk6IFlvbmdxaWFuZyBOaXUgPHlvbmdxaWFuZy5uaXVA bWVkaWF0ZWsuY29tPg0KPiA+ID4gLS0tDQo+ID4gPiAgZHJpdmVycy9ncHUvZHJtL21lZGlhdGVr L210a19kcm1fY3J0Yy5jIHwgMTAgKysrKysrKystLQ0KPiA+ID4gIDEgZmlsZSBjaGFuZ2VkLCA4 IGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pDQo+ID4gPiANCj4gPiA+IGRpZmYgLS1naXQg YS9kcml2ZXJzL2dwdS9kcm0vbWVkaWF0ZWsvbXRrX2RybV9jcnRjLmMgYi9kcml2ZXJzL2dwdS9k cm0vbWVkaWF0ZWsvbXRrX2RybV9jcnRjLmMNCj4gPiA+IGluZGV4IGNhNGZjNDcuLjlhOGUxZDQg MTAwNjQ0DQo+ID4gPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vbWVkaWF0ZWsvbXRrX2RybV9jcnRj LmMNCj4gPiA+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9tZWRpYXRlay9tdGtfZHJtX2NydGMuYw0K PiA+ID4gQEAgLTczNCw2ICs3MzQsNyBAQCBpbnQgbXRrX2RybV9jcnRjX2NyZWF0ZShzdHJ1Y3Qg ZHJtX2RldmljZSAqZHJtX2RldiwNCj4gPiA+ICAJaW50IHBpcGUgPSBwcml2LT5udW1fcGlwZXM7 DQo+ID4gPiAgCWludCByZXQ7DQo+ID4gPiAgCWludCBpOw0KPiA+ID4gKwl1aW50IGdhbW1hX2x1 dF9zaXplID0gMDsNCj4gPiA+ICANCj4gPiA+ICAJaWYgKCFwYXRoKQ0KPiA+ID4gIAkJcmV0dXJu IDA7DQo+ID4gPiBAQCAtNzg1LDYgKzc4Niw5IEBAIGludCBtdGtfZHJtX2NydGNfY3JlYXRlKHN0 cnVjdCBkcm1fZGV2aWNlICpkcm1fZGV2LA0KPiA+ID4gIAkJfQ0KPiA+ID4gIA0KPiA+ID4gIAkJ bXRrX2NydGMtPmRkcF9jb21wW2ldID0gY29tcDsNCj4gPiA+ICsNCj4gPiA+ICsJCWlmIChjb21w LT5mdW5jcy0+Z2FtbWFfc2V0KQ0KPiA+ID4gKwkJCWdhbW1hX2x1dF9zaXplID0gTVRLX0xVVF9T SVpFOw0KPiA+ID4gIAl9DQo+ID4gPiAgDQo+ID4gPiAgCWZvciAoaSA9IDA7IGkgPCBtdGtfY3J0 Yy0+ZGRwX2NvbXBfbnI7IGkrKykNCj4gPiA+IEBAIC04MDUsOCArODA5LDEwIEBAIGludCBtdGtf ZHJtX2NydGNfY3JlYXRlKHN0cnVjdCBkcm1fZGV2aWNlICpkcm1fZGV2LA0KPiA+ID4gIAkJCQlO VUxMLCBwaXBlKTsNCj4gPiA+ICAJaWYgKHJldCA8IDApDQo+ID4gPiAgCQlyZXR1cm4gcmV0Ow0K PiA+ID4gLQlkcm1fbW9kZV9jcnRjX3NldF9nYW1tYV9zaXplKCZtdGtfY3J0Yy0+YmFzZSwgTVRL X0xVVF9TSVpFKTsNCj4gPiA+IC0JZHJtX2NydGNfZW5hYmxlX2NvbG9yX21nbXQoJm10a19jcnRj LT5iYXNlLCAwLCBmYWxzZSwgTVRLX0xVVF9TSVpFKTsNCj4gPiA+ICsNCj4gPiA+ICsJaWYgKGdh bW1hX2x1dF9zaXplKQ0KPiA+ID4gKwkJZHJtX21vZGVfY3J0Y19zZXRfZ2FtbWFfc2l6ZSgmbXRr X2NydGMtPmJhc2UsIGdhbW1hX2x1dF9zaXplKTsNCj4gPiA+ICsJZHJtX2NydGNfZW5hYmxlX2Nv bG9yX21nbXQoJm10a19jcnRjLT5iYXNlLCAwLCBmYWxzZSwgZ2FtbWFfbHV0X3NpemUpOw0KPiA+ IA0KPiA+IElmIHRoZXJlIGlzIG5vIGdhbW1hLCBzaGFsbCB3ZSBlbmFibGUgY29sb3IgbWFuYWdl bWVudD8NCj4gPiANCj4gPiBSZWdhcmRzLA0KPiA+IENLDQo+IA0KPiBkcm1fY3J0Y19lbmFibGVf Y29sb3JfbWdtdCB3aWxsIGNoZWNrIHRoZSBnYW1tYV9sdXRfc2l6ZSBwYXJhbWV0ZXIsDQo+IGlm IG5vIGdhbW1hLCBnYW1tYV9sdXRfc2l6ZSB3aWxsIGJlIDAsIGFuZCBnYW1tYV9sdXRfc2l6ZSB3 aWxsIG5vdCBhdHRjaA0KPiBnYW1tYSBwcm9wZXJ0eSBmb3IgdGhlIGNydGMNCg0KT0ssIHlvdSdy ZSByaWdodC4gU28NCg0KUmV2aWV3ZWQtYnk6IENLIEh1IDxjay5odUBtZWRpYXRlay5jb20+DQoN CmFuZCB3aGF0IHRpdGxlIHdvdWxkIHlvdSBsaWtlPw0KSSBjb3VsZCBtb2RpZnkgaXQgd2hlbiBJ IGFwcGx5IHRoaXMgcGF0Y2guDQoNClJlZ2FyZHMsDQpDSw0KDQo+ID4gDQo+ID4gPiAgCXByaXYt Pm51bV9waXBlcysrOw0KPiA+ID4gIAltdXRleF9pbml0KCZtdGtfY3J0Yy0+aHdfbG9jayk7DQo+ ID4gPiAgDQo+ID4gDQo+ID4gDQo+IA0KPiANCg0K