From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pierre-Louis Bossart Subject: Re: [alsa-devel] Timing issues between ALSA and i915 drivers Date: Thu, 17 Jan 2019 14:47:05 -0600 Message-ID: <389d9520-1380-dafa-2245-dc2e2b2b74f2@linux.intel.com> References: <045cfacd-7a8a-af3c-0f82-325b12cf65da@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Takashi Iwai Cc: "Rojewski, Cezary" , intel-gfx@lists.freedesktop.org, "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." , Mark Brown List-Id: alsa-devel@alsa-project.org Cj4+IEkgdHJpZWQgdG8gbmFycm93IGRvd24gdGhlIGlzc3VlIGZ1cnRoZXIgYW5kIG15IGN1cnJl bnQgdW5kZXJzdGFuZGluZwo+PiBpcyB0aGF0IHRoZSBTa3lsYWtlIGRyaXZlciBwZXJmb3JtcyBs aW5rIHJlc2V0IG9wZXJhdGlvbnMgd2l0aG91dCB0aGUKPj4gZGlzcGxheSBwb3dlciB0dXJuZWQg b24gLSB3aGljaCBkb2VzIG5vdCBsb29rIGxpa2UgYSB2ZXJ5IHNtYXJ0IHRoaW5nCj4+IHRvIGRv IGluIGhpbmRzaWdodC4KPj4KPj4gSW4gb3RoZXIgd29yZHMsIGl0J3Mgbm90IHJlYWxseSB3aGVu IHNuZF9oZGFjX2k5MTVfaW5pdCgpIGlzIGNhbGxlZAo+PiB0aGF0IG1hdHRlcnMgYXMgSSBhc3N1 bWVkIGluaXRpYWxseSwgYnV0IG1vcmUgd2hlbgo+PiBzbmRfaGRhY19kaXNwbGF5X3Bvd2VyKCkg aXMgaW52b2tlZC4gVGhlcmUgYXJlIHR3byBjYXNlcyB3aGVyZSB0aGlzCj4+IGhhcHBlbnMsIGFu ZCBmb3IgZWFjaCBvZiB0aGVtIHR1cm5pbmcgdGhlIGRpc3BsYXkgcG93ZXIgb24gcmVzdWx0cyBp bgo+PiBIRE1JIGRldGVjdGlvbi4gVGhlIGF0dGFjaGVkIGRpZmZzIHNwbGl0IHRoZSBpbml0aWFs aXphdGlvbiBmcm9tIHRoZQo+PiBwb3dlciBvbiwgd2hpY2ggcHJvdmlkZXMgYSBiZXR0ZXIgdW5k ZXJzdGFuZGluZyBvZiB0aGUgaXNzdWUuCj4gT0ssIHRoaXMgbWFrZXMgc29tZSBzZW5zZSwgYW5k IHRoYXQncyB0aGUgdmVyeSByZWFzb24gd2UgaGF2ZQo+IEhEQV9DT0RFQ19JRFhfQ09OVFJPTExF UiBmb3Igc25kX2hkYWNfZGlzcGxheV9wb3dlcigpLiAgSUlSQywgd2UKPiBuZWVkZWQgdG8gcG93 ZXIgb24gdGhlIGRpc3BsYXkgZm9yIHByb2Jpbmcgb2YgdGhlIGxlZ2FjeSBIREEsIHRvby4KPiBP bmNlIGFmdGVyIHRoYXQsIGZvciB0aGUgbm9ybWFsIG9wZXJhdGlvbiwgdGhlIGRpc3BsYXkgcG93 ZXIgaXMgbmVlZGVkCj4gb25seSB3aGVuIHlvdSBvdXRwdXQgdGhlIEhETUkgc3RyZWFtLgo+Cj4K Pj4gV2hhdCB3b3VsZCBiZSByZWFsbHkgdXNlZnVsIGF0IHRoaXMgcG9pbnQgaXMgYSBjb25maXJt YXRpb24gdGhhdAo+PiBzbmRfaGRhY19pOTE1X2luaXQoKSBjYW5ub3QgYmUgY2FsbGVkIGluIHRo ZSBpbml0aWFsIHByb2JlIGJ1dCBkb2VzCj4+IG5lZWQgdG8gYmUgZXhlY3V0ZWQgaW4gYSB3b3Jr IHF1ZXVlLiBUaGF0IHdvdWxkIHJlYWxseSBpbXBhY3QgdGhlIHdheQo+PiB0aGUgaW5pdGlhbGl6 YXRpb24gc2VxdWVuY2UgaXMgcmV3b3JrZWQgb24gdGhlIFNreWxha2Ugc2lkZSBhcyB3ZWxsIGFz Cj4+IG1vZGlmeSB0aGUgd2F5IHRoZSBTT0YgZHJpdmVyIGRlYWxzIHdpdGggaTkxNSBpbml0aWFs aXphdGlvbi4KPiBJdCdzIG5lZWRlZCB0byBiZSBjYWxsZWQgaW4gYSB3b3JrIHF1ZXVlLCB5ZXMu Cj4KPiBCYXNpY2FsbHkgeW91IHNob3VsZG4ndCBjYWxsIHJlcXVlc3RfbW9kdWxlKCkgaW4gdGhl IGRyaXZlcidzIHByb2JlCj4gY2FsbGJhY2suICBXaGVuIHRoZSBwcm9iZSBjYWxsYmFjayBpcyBj YWxsZWQgZnJvbSB0aGUgbW9kdWxlIGxvYWRpbmcsCj4gaXQgYmxvY2tzIHRoZSBtb2R1bGUgbG9h ZGluZyBpdHNlbGYsIGhlbmNlIGxvYWRpbmcgeWV0IGFub3RoZXIgbW9kdWxlCj4gY2FuJ3Qgd29y ay4gIEEgc2l0dWF0aW9uIG1pZ2h0IGJlIGVhc2llciB0aGFuIHRoZSBwYXN0ICh3aGljaAo+IGRl YWRsb2NrZWQpLCBidXQgc3RpbGwgaXQncyBhZHZpc2VkIHRvIHVzZSBlaXRoZXIgdGhlCj4gcmVx dWVzdF9tb2R1bGVfbm93YWl0KCkgd2l0aCB0aGUgY2FsbGJhY2sgb3IgY2FsbCByZXF1ZXN0X21v ZHVsZSgpCj4gYXN5bmNocm9ub3VzbHkgZnJvbSBwcm9iZS4KClRoYW5rcyBUYWthc2hpLCB0aGlz IGlzIHZlcnkgdXNlZnVsLiBJIGd1ZXNzIHRoYXQgd2lsbCByZXF1aXJlIGEgCmNvbXBsZXRlIHJl d29yayBvZiB0aGUgU2t5bGFrZSBpbml0aWFsaXphdGlvbiBzZXF1ZW5jZSB0aGVuLCBteSBzaW1w bGUgCmNvZGUgdHJhbnNsYXRpb24gaXNuJ3QgZW5vdWdoIGluZGVlZCBhbmQgdGhlIGN1cnJlbnQg cGFydGl0aW9uIGJldHdlZW4gCnByb2JlL3dvcmsgcXVldWUgY2FuJ3QgY29tcGx5IHdpdGggYm90 aCByZXF1aXJlbWVudHMgKHJlcXVlc3QgbW9kdWxlIAphc3luY2hyb25vdXNseSBmcm9tIHByb2Jl LCBkaXNwbGF5IHR1cm5lZCBvbiBiZWZvcmUgbXVja2luZyB3aXRoIGxpbmtzKS4KCldlIGFsc28g bmVlZCB0aGlzIGNoYW5nZWQgZm9yIFNPRiwgdGhlIGk5MTVfaW5pdCBpcyBkb25lIGluIHRoZSBw cm9iZS4KCi1QaWVycmUKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9w Lm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVs LWdmeAo=