linux-kernel - Re: [RFC PATCH 00/14] ASoC: qcom: add support to apq8016 audio

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Message-ID: <20150502235704.GA27804@kwestfie-linux.qualcomm.com>
Date:	Sat, 2 May 2015 16:57:04 -0700
From:	Kenneth Westfield <kwestfie@...eaurora.org>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	Patrick Lai <plai@...eaurora.org>, Mark Brown <broonie@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Banajit Goswami <bgoswami@...eaurora.org>,
	Kenneth Westfield <kwestfie@...eaurora.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org, linux-arm-msm@...r.kernel.org
Subject: Re: [RFC PATCH 00/14] ASoC: qcom: add support to apq8016 audio

On Thu, Apr 30, 2015 at 06:15:48PM +0100, Srinivas Kandagatla wrote:
> Hi All,
> 
> This patchset adds apq8016 audio support into lpass driver. Existing Lpass
> driver can not be used as-it-is for apq8016 as it contains code specific to
> ipq806x. Also the driver only supports single i2s port, single dma channel and
> single bitclk control.
> 
> APQ8016 has 4 MI2S( Primary, Secondary, Tertiary, Quaternary) which can be routed
> to internal wcd codec or external codecs. This routing is controlled by 2 mux
> registers.
> 
> This patch series firstly re-organizes the lpass driver such that the SOC
> specific bits are moved away from the driver. And secondly the SOC specifics
> are now passed as lpass variant data which would include various register
> offsets, dma channel allocations and SOC specific clock handling.
> 
> Finally the patchset add apq8016 lpass and machine driver.
> 
> This patchset also has two trivial cleanup patches which are to do with
> redundant checks and removing unnecessary header files.
> 
> All these patches are tested for HDMI audio via adv7533 bridge and Analog audio
> on APQ8016-SBC and msm8916-mtp boards. I dont have access to ipq806x boards to
> test these patches.
> 
> This is very first version of the patches which was developed with very
> mimimal/no access to IP documentation. I would like to get your opinon on the
> over all approch.
> 
> 
> Kenneth/Patrick,
> 	Could you please try these patches on storm board?

I will test the patches and let you know by Wednesday.  Also, I posted
some comments, but Patrick should be posting his comments separately
later next week.

-- 
Kenneth Westfield
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, 
a Linux Foundation Collaborative Project
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