From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: [PATCH v5] ASoC: add RT286 CODEC driver Date: Thu, 13 Mar 2014 21:04:49 +0100 Message-ID: References: <1394521896-27721-1-git-send-email-bardliao@realtek.com> <5320CE8C.8090608@metafoo.de> <53216DDC.9090502@metafoo.de> <20140313192902.GL366@sirena.org.uk> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id DC9FC265472 for ; Thu, 13 Mar 2014 21:04:51 +0100 (CET) In-Reply-To: <20140313192902.GL366@sirena.org.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Mark Brown Cc: Oder Chiou , "alsa-devel@alsa-project.org" , Lars-Peter Clausen , "lgirdwood@gmail.com" , Bard Liao , Gustaw Lewandowski , Flove List-Id: alsa-devel@alsa-project.org At Thu, 13 Mar 2014 19:29:02 +0000, Mark Brown wrote: > > On Thu, Mar 13, 2014 at 09:52:14AM +0100, Takashi Iwai wrote: > > > different values for get and set. And, yet more tricky part is the > > amplifier verbs. These aren't suitable with regmap caching, > > unfortunately. > > We don't really *need* the cache, it just makes it easier to do resume > and gives a bit of a performance boost. Well, the caching isn't just a bit. Without caching, you'd have to whip the sound hardware powered up/down at each time querying the current mixer value. My point is only that the design of HD-audio is so plain ugly :) Takashi