From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: [alsa-devel] Timing issues between ALSA and i915 drivers Date: Fri, 18 Jan 2019 09:08:14 +0100 Message-ID: References: <045cfacd-7a8a-af3c-0f82-325b12cf65da@linux.intel.com> <389d9520-1380-dafa-2245-dc2e2b2b74f2@linux.intel.com> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <389d9520-1380-dafa-2245-dc2e2b2b74f2@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Pierre-Louis Bossart 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 T24gVGh1LCAxNyBKYW4gMjAxOSAyMTo0NzowNSArMDEwMCwKUGllcnJlLUxvdWlzIEJvc3NhcnQg d3JvdGU6Cj4gCj4gCj4gPj4gSSB0cmllZCB0byBuYXJyb3cgZG93biB0aGUgaXNzdWUgZnVydGhl ciBhbmQgbXkgY3VycmVudCB1bmRlcnN0YW5kaW5nCj4gPj4gaXMgdGhhdCB0aGUgU2t5bGFrZSBk cml2ZXIgcGVyZm9ybXMgbGluayByZXNldCBvcGVyYXRpb25zIHdpdGhvdXQgdGhlCj4gPj4gZGlz cGxheSBwb3dlciB0dXJuZWQgb24gLSB3aGljaCBkb2VzIG5vdCBsb29rIGxpa2UgYSB2ZXJ5IHNt YXJ0IHRoaW5nCj4gPj4gdG8gZG8gaW4gaGluZHNpZ2h0Lgo+ID4+Cj4gPj4gSW4gb3RoZXIgd29y ZHMsIGl0J3Mgbm90IHJlYWxseSB3aGVuIHNuZF9oZGFjX2k5MTVfaW5pdCgpIGlzIGNhbGxlZAo+ ID4+IHRoYXQgbWF0dGVycyBhcyBJIGFzc3VtZWQgaW5pdGlhbGx5LCBidXQgbW9yZSB3aGVuCj4g Pj4gc25kX2hkYWNfZGlzcGxheV9wb3dlcigpIGlzIGludm9rZWQuIFRoZXJlIGFyZSB0d28gY2Fz ZXMgd2hlcmUgdGhpcwo+ID4+IGhhcHBlbnMsIGFuZCBmb3IgZWFjaCBvZiB0aGVtIHR1cm5pbmcg dGhlIGRpc3BsYXkgcG93ZXIgb24gcmVzdWx0cyBpbgo+ID4+IEhETUkgZGV0ZWN0aW9uLiBUaGUg YXR0YWNoZWQgZGlmZnMgc3BsaXQgdGhlIGluaXRpYWxpemF0aW9uIGZyb20gdGhlCj4gPj4gcG93 ZXIgb24sIHdoaWNoIHByb3ZpZGVzIGEgYmV0dGVyIHVuZGVyc3RhbmRpbmcgb2YgdGhlIGlzc3Vl Lgo+ID4gT0ssIHRoaXMgbWFrZXMgc29tZSBzZW5zZSwgYW5kIHRoYXQncyB0aGUgdmVyeSByZWFz b24gd2UgaGF2ZQo+ID4gSERBX0NPREVDX0lEWF9DT05UUk9MTEVSIGZvciBzbmRfaGRhY19kaXNw bGF5X3Bvd2VyKCkuICBJSVJDLCB3ZQo+ID4gbmVlZGVkIHRvIHBvd2VyIG9uIHRoZSBkaXNwbGF5 IGZvciBwcm9iaW5nIG9mIHRoZSBsZWdhY3kgSERBLCB0b28uCj4gPiBPbmNlIGFmdGVyIHRoYXQs IGZvciB0aGUgbm9ybWFsIG9wZXJhdGlvbiwgdGhlIGRpc3BsYXkgcG93ZXIgaXMgbmVlZGVkCj4g PiBvbmx5IHdoZW4geW91IG91dHB1dCB0aGUgSERNSSBzdHJlYW0uCj4gPgo+ID4KPiA+PiBXaGF0 IHdvdWxkIGJlIHJlYWxseSB1c2VmdWwgYXQgdGhpcyBwb2ludCBpcyBhIGNvbmZpcm1hdGlvbiB0 aGF0Cj4gPj4gc25kX2hkYWNfaTkxNV9pbml0KCkgY2Fubm90IGJlIGNhbGxlZCBpbiB0aGUgaW5p dGlhbCBwcm9iZSBidXQgZG9lcwo+ID4+IG5lZWQgdG8gYmUgZXhlY3V0ZWQgaW4gYSB3b3JrIHF1 ZXVlLiBUaGF0IHdvdWxkIHJlYWxseSBpbXBhY3QgdGhlIHdheQo+ID4+IHRoZSBpbml0aWFsaXph dGlvbiBzZXF1ZW5jZSBpcyByZXdvcmtlZCBvbiB0aGUgU2t5bGFrZSBzaWRlIGFzIHdlbGwgYXMK PiA+PiBtb2RpZnkgdGhlIHdheSB0aGUgU09GIGRyaXZlciBkZWFscyB3aXRoIGk5MTUgaW5pdGlh bGl6YXRpb24uCj4gPiBJdCdzIG5lZWRlZCB0byBiZSBjYWxsZWQgaW4gYSB3b3JrIHF1ZXVlLCB5 ZXMuCj4gPgo+ID4gQmFzaWNhbGx5IHlvdSBzaG91bGRuJ3QgY2FsbCByZXF1ZXN0X21vZHVsZSgp IGluIHRoZSBkcml2ZXIncyBwcm9iZQo+ID4gY2FsbGJhY2suICBXaGVuIHRoZSBwcm9iZSBjYWxs YmFjayBpcyBjYWxsZWQgZnJvbSB0aGUgbW9kdWxlIGxvYWRpbmcsCj4gPiBpdCBibG9ja3MgdGhl IG1vZHVsZSBsb2FkaW5nIGl0c2VsZiwgaGVuY2UgbG9hZGluZyB5ZXQgYW5vdGhlciBtb2R1bGUK PiA+IGNhbid0IHdvcmsuICBBIHNpdHVhdGlvbiBtaWdodCBiZSBlYXNpZXIgdGhhbiB0aGUgcGFz dCAod2hpY2gKPiA+IGRlYWRsb2NrZWQpLCBidXQgc3RpbGwgaXQncyBhZHZpc2VkIHRvIHVzZSBl aXRoZXIgdGhlCj4gPiByZXF1ZXN0X21vZHVsZV9ub3dhaXQoKSB3aXRoIHRoZSBjYWxsYmFjayBv ciBjYWxsIHJlcXVlc3RfbW9kdWxlKCkKPiA+IGFzeW5jaHJvbm91c2x5IGZyb20gcHJvYmUuCj4g Cj4gVGhhbmtzIFRha2FzaGksIHRoaXMgaXMgdmVyeSB1c2VmdWwuIEkgZ3Vlc3MgdGhhdCB3aWxs IHJlcXVpcmUgYQo+IGNvbXBsZXRlIHJld29yayBvZiB0aGUgU2t5bGFrZSBpbml0aWFsaXphdGlv biBzZXF1ZW5jZSB0aGVuLCBteSBzaW1wbGUKPiBjb2RlIHRyYW5zbGF0aW9uIGlzbid0IGVub3Vn aCBpbmRlZWQgYW5kIHRoZSBjdXJyZW50IHBhcnRpdGlvbiBiZXR3ZWVuCj4gcHJvYmUvd29yayBx dWV1ZSBjYW4ndCBjb21wbHkgd2l0aCBib3RoIHJlcXVpcmVtZW50cyAocmVxdWVzdCBtb2R1bGUK PiBhc3luY2hyb25vdXNseSBmcm9tIHByb2JlLCBkaXNwbGF5IHR1cm5lZCBvbiBiZWZvcmUgbXVj a2luZyB3aXRoCj4gbGlua3MpLgo+IAo+IFdlIGFsc28gbmVlZCB0aGlzIGNoYW5nZWQgZm9yIFNP RiwgdGhlIGk5MTVfaW5pdCBpcyBkb25lIGluIHRoZSBwcm9iZS4KCldlbGwsIHNuZF9oZGFjX2k5 MTVfaW5pdCgpIGl0c2VsZiBhbHNvIGNhbGxzIGFscmVhZHkgcmVxdWVzdF9tb2R1bGUoKQppZiBp OTE1IGlzIG1pc3NpbmcsIHNvIHRoaXMgc2hvdWxkIGJlIGRvbmUgaW4gdGhlIGFzeW5jIGNvZGUs IHRvby4uLgoKVGhlIGNvbXBsaWNhdGlvbiBjb21lcyBmcm9tIHRoZSBmYWN0IHRoYXQgSEQtYXVk aW8gZHJpdmVyIGRvZXNuJ3QKbmVjZXNzYXJpbHkgYmluZCB3aXRoIGk5MTUgZ3JhcGhpY3MuICBP dGhlcndpc2Ugd2UgY291bGQgaGF2ZSBhIGZpeGVkCmhhcmQgZGVwZW5kZW5jeSB0aGF0IGFzc3Vy ZXMgbW9yZSBvciBsZXNzIGk5MTUgcHJvYmluZyBiZWZvcmUKSEQtYXVkaW8gKHRob3VnaCwgaTkx NSBwcm9iaW5nIGJlY2FtZSBhc3luYywgc28gaXQncyBub3cgaGFyZGVyKS4KCgp0aGFua3MsCgpU YWthc2hpCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCklu dGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRw czovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=