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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2019-01-10 18:45, Boris Brezillon wrote: > On Thu, 10 Jan 2019 15:10:28 +0000 > Peter Rosin wrote: > >> Hi! >> >> I found an unfortunate issue while recoding plane handling to use >> drm_atomic_helper_check_plane_state(). The driver rotates clockwise, >> which is not correct. I simply fixed it (patch 1/4), but maybe that >> will cause regressions for unsuspecting users who simply assumed >> that the clockwise rotation was correct? I don't know what to do >> about that? Adding an option to get the old broken behavior seems >> useless, wouldn't it be just as easy to just fix whatever app to >> rotate the other way instead of adding an option somewhere? > > Hm, rotation support has been added before the standard rotation > property was created, and at that time I assumed rotation was clockwise > (which apparently was an unwise choice). Anyway, I don't have a > solution for this problem, so I'll let Nicolas decide if it's > acceptable to change the rotation behavior. Speaking of unwise, fbcon rotation is clockwise and drm rotation is counterclockwise. 'nuff said. Cheers, Peter _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Rosin Subject: Re: [PATCH 0/4] drm/atmel-hlcdc: fix plane clipping/rotation issues Date: Thu, 10 Jan 2019 21:24:02 +0000 Message-ID: References: <20190110151020.30468-1-peda@axentia.se> <20190110184446.75b4350a@bbrezillon> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190110184446.75b4350a@bbrezillon> Content-Language: en-US Content-ID: <8C616B4FE4CACD448F68AA381DF5801D@eurprd02.prod.outlook.com> Sender: linux-kernel-owner@vger.kernel.org To: Boris Brezillon Cc: "linux-kernel@vger.kernel.org" , Alexandre Belloni , David Airlie , "dri-devel@lists.freedesktop.org" , Boris Brezillon , "linux-arm-kernel@lists.infradead.org" , Nicolas Ferre List-Id: dri-devel@lists.freedesktop.org T24gMjAxOS0wMS0xMCAxODo0NSwgQm9yaXMgQnJlemlsbG9uIHdyb3RlOg0KPiBPbiBUaHUsIDEw IEphbiAyMDE5IDE1OjEwOjI4ICswMDAwDQo+IFBldGVyIFJvc2luIDxwZWRhQGF4ZW50aWEuc2U+ IHdyb3RlOg0KPiANCj4+IEhpIQ0KPj4NCj4+IEkgZm91bmQgYW4gdW5mb3J0dW5hdGUgaXNzdWUg d2hpbGUgcmVjb2RpbmcgcGxhbmUgaGFuZGxpbmcgdG8gdXNlDQo+PiBkcm1fYXRvbWljX2hlbHBl cl9jaGVja19wbGFuZV9zdGF0ZSgpLiBUaGUgZHJpdmVyIHJvdGF0ZXMgY2xvY2t3aXNlLA0KPj4g d2hpY2ggaXMgbm90IGNvcnJlY3QuIEkgc2ltcGx5IGZpeGVkIGl0IChwYXRjaCAxLzQpLCBidXQg bWF5YmUgdGhhdA0KPj4gd2lsbCBjYXVzZSByZWdyZXNzaW9ucyBmb3IgdW5zdXNwZWN0aW5nIHVz ZXJzIHdobyBzaW1wbHkgYXNzdW1lZA0KPj4gdGhhdCB0aGUgY2xvY2t3aXNlIHJvdGF0aW9uIHdh cyBjb3JyZWN0PyBJIGRvbid0IGtub3cgd2hhdCB0byBkbw0KPj4gYWJvdXQgdGhhdD8gQWRkaW5n IGFuIG9wdGlvbiB0byBnZXQgdGhlIG9sZCBicm9rZW4gYmVoYXZpb3Igc2VlbXMNCj4+IHVzZWxl c3MsIHdvdWxkbid0IGl0IGJlIGp1c3QgYXMgZWFzeSB0byBqdXN0IGZpeCB3aGF0ZXZlciBhcHAg dG8NCj4+IHJvdGF0ZSB0aGUgb3RoZXIgd2F5IGluc3RlYWQgb2YgYWRkaW5nIGFuIG9wdGlvbiBz b21ld2hlcmU/DQo+IA0KPiBIbSwgcm90YXRpb24gc3VwcG9ydCBoYXMgYmVlbiBhZGRlZCBiZWZv cmUgdGhlIHN0YW5kYXJkIHJvdGF0aW9uDQo+IHByb3BlcnR5IHdhcyBjcmVhdGVkLCBhbmQgYXQg dGhhdCB0aW1lIEkgYXNzdW1lZCByb3RhdGlvbiB3YXMgY2xvY2t3aXNlDQo+ICh3aGljaCBhcHBh cmVudGx5IHdhcyBhbiB1bndpc2UgY2hvaWNlKS4gQW55d2F5LCBJIGRvbid0IGhhdmUgYQ0KPiBz b2x1dGlvbiBmb3IgdGhpcyBwcm9ibGVtLCBzbyBJJ2xsIGxldCBOaWNvbGFzIGRlY2lkZSBpZiBp dCdzDQo+IGFjY2VwdGFibGUgdG8gY2hhbmdlIHRoZSByb3RhdGlvbiBiZWhhdmlvci4NCg0KU3Bl YWtpbmcgb2YgdW53aXNlLCBmYmNvbiByb3RhdGlvbiBpcyBjbG9ja3dpc2UgYW5kIGRybSByb3Rh dGlvbg0KaXMgY291bnRlcmNsb2Nrd2lzZS4gJ251ZmYgc2FpZC4NCg0KQ2hlZXJzLA0KUGV0ZXIN Cg==