linux-kernel - Re: [RFC PATCH 03/14] ASoC: qcom: move ipq806x specific bits out of lpass driver.

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Date:	Mon, 4 May 2015 22:19:28 -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 03/14] ASoC: qcom: move ipq806x specific bits out of
 lpass driver.

On Sat, May 02, 2015 at 04:57:38PM -0700, Kenneth Westfield wrote:
> On Thu, Apr 30, 2015 at 06:16:53PM +0100, Srinivas Kandagatla wrote:
> > This patch tries to make the lpass driver more generic by moving the
> > ipq806x specific bits out of the cpu and platform driver, also allows
> the
> > SOC specific drivers to add the correct register offsets.
> > 
> > This patch also renames the register definition header file into more
> > generic header file.
> 
> > diff --git a/sound/soc/qcom/lpass-ipq806x.c
> b/sound/soc/qcom/lpass-ipq806x.c
> > new file mode 100644
> > index 0000000..8e9a427
> > --- /dev/null
> > +++ b/sound/soc/qcom/lpass-ipq806x.c

> > +enum lpaif_i2s_ports {
> > +	LPAIF_I2S_PORT_MIN		= 0,
> > +
> > +	LPAIF_I2S_PORT_CODEC_SPK	= 0,
> > +	LPAIF_I2S_PORT_CODEC_MIC	= 1,
> > +	LPAIF_I2S_PORT_SEC_SPK		= 2,
> > +	LPAIF_I2S_PORT_SEC_MIC		= 3,
> > +	LPAIF_I2S_PORT_MI2S		= 4,
> > +
> > +	LPAIF_I2S_PORT_MAX		= 4,
> > +	LPAIF_I2S_PORT_NUM		= 5,
> > +};
> 
> These port mappings here...
> 
> > +enum lpaif_irq_ports {
> > +	LPAIF_IRQ_PORT_MIN		= 0,
> > +
> > +	LPAIF_IRQ_PORT_HOST		= 0,
> > +	LPAIF_IRQ_PORT_ADSP		= 1,
> > +
> > +	LPAIF_IRQ_PORT_MAX		= 2,
> > +	LPAIF_IRQ_PORT_NUM		= 3,
> > +};
> 
> ...here...
> 
> > +enum lpaif_dma_channels {
> > +	LPAIF_RDMA_CHAN_MIN		= 0,
> > +
> > +	LPAIF_RDMA_CHAN_MI2S		= 0,
> > +	LPAIF_RDMA_CHAN_PCM0		= 1,
> > +	LPAIF_RDMA_CHAN_PCM1		= 2,
> > +
> > +	LPAIF_RDMA_CHAN_MAX		= 4,
> > +	LPAIF_RDMA_CHAN_NUM		= 5,
> > +};
> 
> ...and here can be SOC-specific.  Should move them to the SOC-specific
> files.

Expanding on this, the I2S port mappings for the APQ8016 should replace
the ones defined above with the constants you refer to in
dt-bindings/sound/apq8016.h:
   MI2S_PRIMARY
   MI2S_SECONDARY
   etc.

Maybe defining a corresponding ipq806x.h in the same directory, and
moving the above definitions there?

-- 
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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