From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH] drm/dp: Use large transactions for I2C over AUX Date: Wed, 28 Jan 2015 11:30:56 +0100 Message-ID: <20150128103056.GW4764@phenom.ffwll.local> References: <1422285768-1655-1-git-send-email-simon.farnsworth@onelan.co.uk> <1540451.drLVq8Y4Zh@f19simon> <20150126161101.GC19354@intel.com> <3675886.CKNMQZRBBc@f19simon> <20150127133653.GG19354@intel.com> <877fw7s2lh.fsf@intel.com> <20150128091022.GF4764@phenom.ffwll.local> <87y4onqmfl.fsf@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wg0-f48.google.com (mail-wg0-f48.google.com [74.125.82.48]) by gabe.freedesktop.org (Postfix) with ESMTP id DD20B89A0F for ; Wed, 28 Jan 2015 02:29:37 -0800 (PST) Received: by mail-wg0-f48.google.com with SMTP id x12so19692470wgg.7 for ; Wed, 28 Jan 2015 02:29:37 -0800 (PST) Content-Disposition: inline In-Reply-To: <87y4onqmfl.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 Cc: dri-devel@lists.freedesktop.org, Thierry Reding List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBKYW4gMjgsIDIwMTUgYXQgMTE6MzM6MzRBTSArMDIwMCwgSmFuaSBOaWt1bGEgd3Jv dGU6Cj4gT24gV2VkLCAyOCBKYW4gMjAxNSwgRGFuaWVsIFZldHRlciA8ZGFuaWVsQGZmd2xsLmNo PiB3cm90ZToKPiA+IE9uIFdlZCwgSmFuIDI4LCAyMDE1IGF0IDEwOjU5OjA2QU0gKzAyMDAsIEph bmkgTmlrdWxhIHdyb3RlOgo+ID4+IE9uIFR1ZSwgMjcgSmFuIDIwMTUsIFZpbGxlIFN5cmrDpGzD pCA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+IHdyb3RlOgo+ID4+ID4gU28gSSd2ZSBi ZWVuIGV4cGVyaW1lbnRpbmcgYSBiaXQgd2l0aCB2YXJpb3VzIGRvbmdsZXMgaGVyZSwgYW5kIHNh ZGx5IEkndmUKPiA+PiA+IG5vdCBtYW5hZ2VkIHRvIGdldCBhbnkgb25lIG9mIHRoZW0gdG8gcmV0 dXJuIHNob3J0IHJlYWRzIDooCj4gPj4gPgo+ID4+ID4gSSBkaWQgZmluZCBvbmUgdGhhdCBhbGxv d3MgY2hhbmdpbmcgdGhlIHNwZWVkIG9mIHRoZSBpMmMgYnVzLCBidXQgZXZlbiBpZgo+ID4+ID4g SSByZWR1Y2UgaXQgdG8gMWtoeiB0aGVyZSBhcmUgbm8gc2hvcnQgcmVhZHMsIGp1c3QgYSBsb3Qg bW9yZSBkZWZlcnMuIFRoZQo+ID4+ID4gZG9uZ2xlIGluIHF1ZXN0aW9uIGhhcyBPVUkgMDAxY2Y4 Lgo+ID4+ID4KPiA+PiA+IEhvd2V2ZXIgdGhlIGdvb2QgbmV3cyBpcyB0aGF0IEVESUQgcmVhZHMg c2VlbSB0byBnZXQgZmFzdGVyIGFjcm9zcyB0aGUKPiA+PiA+IGJvYXJkIHdpdGggMTYgYnl0ZSBt ZXNzYWdlcy4gSG93IG11Y2ggZmFzdGVyIGRlcGVuZHMgb24gdGhlIGRvbmdsZS4KPiA+PiA+Cj4g Pj4gPiBIZXJlIGFyZSBteSBtZWFzdXJlbWVudHMgaG93IGxvbmcgaXQgdG9vayB0byByZWFkIGEg c2luZ2xlIEVESUQgYmxvY2s6Cj4gPj4gPiAgRFAtPkRWSSAoT1VJIDAwMWNmOCk6CTQwbXMgLT4g MzVtcwo+ID4+ID4gIERQLT5WR0EgKE9VSSAwMDIyYjkpOgk0NW1zIC0+IDM4bXMKPiA+PiA+ICBa b3RhYyBEUC0+MnhIRE1JOgkyNW1zIC0+ICA0bXMKPiA+PiA+Cj4gPj4gPgo+ID4+ID4gT2ggYW5k IHRoaXMgaXMgaG93IEkgbWFuZ2xlZCBteSBkcm1fZHBfaTJjX3hmZXIoKToKPiA+PiA+IHRyYW5z ZmVycmVkID0gMDsKPiA+PiA+IHdoaWxlIChtc2dzW2ldLmxlbiA+IHRyYW5zZmVycmVkKSB7Cj4g Pj4gPiAJbXNnLmJ1ZmZlciA9IG1zZ3NbaV0uYnVmICsgdHJhbnNmZXJyZWQ7Cj4gPj4gPiAJbXNn LnNpemUgPSBtaW5fdCh1bnNpZ25lZCBpbnQsIGRybV9kcF9pMmNfbXNnX3NpemUsCj4gPj4gPiAJ CQkgbXNnc1tpXS5sZW4gLSB0cmFuc2ZlcnJlZCk7Cj4gPj4gPiAJZXJyID0gZHJtX2RwX2kyY19k b19tc2coYXV4LCAmbXNnKTsKPiA+PiA+IAlpZiAoZXJyIDwgMCkKPiA+PiA+IAkJYnJlYWs7Cj4g Pj4gPiAJV0FSTl9PTihlcnIgPT0gMCk7Cj4gPj4gPiAJdHJhbnNmZXJyZWQgKz0gZXJyOwo+ID4+ ID4gfQo+ID4+ID4KPiA+PiA+IEkgbWFkZSB0aGUgbXNnIHNpemUgY29uZmlndXJhYmxlIHZpYSBh IG1vZHVsZSBwYXJhbSBqdXN0IHRvIGhlbHAgbWUgdGVzdAo+ID4+ID4gdGhpcyBzdHVmZiwgYnV0 IEknbSB0aGlua2luZyB3ZSBtaWdodCB3YW50IHRvIHVwc3RyZWFtIHRoYXQganVzdCB0byBtYWtl Cj4gPj4gPiBpdCBlYXNpZXIgdG8gdHJ5IHNtYWxsZXIgbWVzc2FnZSBzaXplcyBpZi93aGVuIHBl b3BsZSBlbmNvdW50ZXIgcHJvYmxlbWF0aWMKPiA+PiA+IHNpbmtzL2RvbmdsZXMuCj4gPj4gCj4g Pj4gSG93IGFib3V0IGp1c3QgbGV0dGluZyB0aGF0IGhhcHBlbiBmaXJzdCwgdG8gc2VlIGlmIGFu ZCBob3cgdGhlIHByb2JsZW1zCj4gPj4gb2NjdXI/IElmIHRoZXJlJ3MgYSBwYXR0ZXJuLCBtYXli ZSB3ZSBjYW4gZmFsbCBiYWNrIHRvIDEtYnl0ZSB0cmFuc2ZlcnMKPiA+PiBpbiB0aG9zZSBjYXNl cyAob3IgZXZlbiBhZGQgT1VJIGJhc2VkIHF1aXJrcykuIEkndmUgZ3Jvd24gcmVhbGx5Cj4gPj4g aGVzaXRhbnQgYWJvdXQgYWRkaW5nIG5ldyBtb2R1bGUgcGFyYW1ldGVycywgdGhleSBhcmUgQUJJ IHdlIGNhbid0Cj4gPj4gZWFzaWx5IHJlbW92ZS9yZWdyZXNzIG9uY2UgYWRkZWQuCj4gPgo+ID4g bW9kdWxlX3BhcmFtX2RlYnVnIHRha2VzIGNhcmUgb2YgYW55IHN1Y2ggcmlza3MgaW1vLgo+IAo+ IE5vIHN1Y2ggdGhpbmcsIG1heWJlIHlvdSBtZWFuIG1vZHVsZV9wYXJhbV91bnNhZmU/CgpJbmRl ZWQgdGhhdCdzIHdoYXQgSSd2ZSBtZWFudC4KLURhbmllbAotLSAKRGFuaWVsIFZldHRlcgpTb2Z0 d2FyZSBFbmdpbmVlciwgSW50ZWwgQ29ycG9yYXRpb24KKzQxICgwKSA3OSAzNjUgNTcgNDggLSBo dHRwOi8vYmxvZy5mZndsbC5jaApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ry aS1kZXZlbAo=