From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolin Chen Subject: Re: [PATCH v2 2/2] ASoC: fsl: imx-wm8962: Grant hw_params/free() permission to control FLL Date: Tue, 10 Dec 2013 19:08:44 +0800 Message-ID: <20131210110842.GD12042@MrMyself> References: <105d07ac1a77bf99872d75608c97b3342079bfb7.1386344000.git.b42378@freescale.com> <20131209175640.GL29268@sirena.org.uk> <20131210051740.GA10655@MrMyself> <20131210102523.GB12042@MrMyself> <20131210104745.GC29268@sirena.org.uk> <20131210105135.GC12042@MrMyself> <20131210111505.GE29268@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Return-path: Content-Disposition: inline In-Reply-To: <20131210111505.GE29268@sirena.org.uk> Sender: linux-kernel-owner@vger.kernel.org To: Mark Brown Cc: Nicolin Chen , lgirdwood@gmail.com, alsa-devel@alsa-project.org, tiwai@suse.de, perex@perex.cz, linux-kernel@vger.kernel.org List-Id: alsa-devel@alsa-project.org On Tue, Dec 10, 2013 at 11:15:05AM +0000, Mark Brown wrote: > On Tue, Dec 10, 2013 at 06:51:36PM +0800, Nicolin Chen wrote: > > On Tue, Dec 10, 2013 at 10:47:45AM +0000, Mark Brown wrote: > > > > For this sort of question you should follow the DAPM graph... the > > > headphone and speaker mixers have IN4 and MIXIN as inputs for analogue > > > bypass and the STL and STR paths provide digital sidetones through the > > > ADC and DAC. > > > So I could test it merely by using 'amixer cset' to enable those switches > > without doing anything to power WM8962 up as long as my operation follows > > the DAPM graph so that the DPAM would automatically turn on the regulator > > for me? > > Yes, as soon as you have a complete path from an active input to an > active output the path should get powered up. I'll try again tomorrow. Thank you sir.