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

[Srinivas Kandagatla]

On 03/05/15 00:57, 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
>
> > +static const struct of_device_id ipq806x_lpass_cpu_device_id[] = {
> > +	{ .compatible = "qcom,lpass-cpu", .data = &ipq806x_data },
> > +	{}
> > +};
> > +MODULE_DEVICE_TABLE(of, ipq806x_lpass_cpu_device_id);
>
> Surround with #ifdef CONFIG_OF?

I was more of thinking adding "depends OF" in Kconfig.
Is there any possibility that the driver would support non-DT?

> > diff --git a/sound/soc/qcom/lpass-lpaif-reg.h b/sound/soc/qcom/lpass-lpaif-reg.h
> > new file mode 100644
> > index 0000000..5541b14
> > --- /dev/null
> > +++ b/sound/soc/qcom/lpass-lpaif-reg.h
>
> > +#define LPAIF_I2SCTL_REG_ADDR(v, addr, port) \
> > +	(v->i2sctrl_reg_base + (addr) + v->i2sctrl_reg_stride * (port))
>
> Could all of these variant-related macros be eliminated by using the
> regmap_fields_* accessor functions, instead of the regmap_* functions?
Possible, I will give it a try.

> > +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.
Yes, I agree, i will move them to soc specific header file.

> > diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h
> > index 5c99b3d..5bd2a90 100644
> > --- a/sound/soc/qcom/lpass.h
> > +++ b/sound/soc/qcom/lpass.h
>
> >   /* register the platform driver from the CPU DAI driver */
> >   int asoc_qcom_lpass_platform_register(struct platform_device *);
> > +int lpass_cpu_platform_remove(struct platform_device *pdev);
> > +int lpass_cpu_platform_probe(struct platform_device *pdev);
> > +int lpass_cpu_dai_probe(struct snd_soc_dai *dai);
> > +extern struct snd_soc_dai_ops lpass_cpu_dai_ops;
>
> Prefix with asoc_qcom_ to reduce chance of collisions.
Sounds sensible, Will fix it in next version.

--srini
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