Re: [alsa-devel] [PATCH RFC 12/15] ASoC: qcom: add generic bit masks for RDMA and WRDMA

[Kenneth Westfield]

On Mon, Feb 01, 2016 at 09:29:32AM -0800, Srinivas Kandagatla wrote:
> diff --git a/sound/soc/qcom/lpass-lpaif-reg.h
> b/sound/soc/qcom/lpass-lpaif-reg.h
> index 2008f9f..2114b3e 100644
> --- a/sound/soc/qcom/lpass-lpaif-reg.h
> +++ b/sound/soc/qcom/lpass-lpaif-reg.h

...

> +#define __LPAIF_DMA_REG(v, chan, dir, reg)  \
> +	(dir ==  SNDRV_PCM_STREAM_PLAYBACK) ? \
> +		LPAIF_RDMA##reg##_REG(v, chan) : \
> +		LPAIF_WRDMA##reg##_REG(v, chan)
> +
> +#define LPAIF_DMACTL_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir, CTL)
> +#define LPAIF_DMABASE_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir,
> BASE)
> +#define	LPAIF_DMABUFF_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan,
> dir, BUFF)
> +#define LPAIF_DMACURR_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan, dir,
> CURR)
> +#define	LPAIF_DMAPER_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan,
> dir, PER)
> +#define	LPAIF_DMAPERCNT_REG(v, chan, dir) __LPAIF_DMA_REG(v, chan,
> dir, PERCNT)
> +
> +
> +#define LPAIF_DMACTL_AUDINTF(id)	(id << LPAIF_DMACTL_AUDINTF_SHIFT)

IMO, it would make more sense to place this definition here ...

> +
> +#define LPAIF_DMACTL_BURSTEN_MASK	0x800
> +#define LPAIF_DMACTL_BURSTEN_SHIFT	11
> +#define LPAIF_DMACTL_BURSTEN_SINGLE	(0 << LPAIF_DMACTL_BURSTEN_SHIFT)
> +#define LPAIF_DMACTL_BURSTEN_INCR4	(1 << LPAIF_DMACTL_BURSTEN_SHIFT)
> +
> +#define LPAIF_DMACTL_WPSCNT_MASK	0x700
> +#define LPAIF_DMACTL_WPSCNT_SHIFT	8
> +#define LPAIF_DMACTL_WPSCNT_ONE	(0 << LPAIF_DMACTL_WPSCNT_SHIFT)
> +#define LPAIF_DMACTL_WPSCNT_TWO	(1 << LPAIF_DMACTL_WPSCNT_SHIFT)
> +#define LPAIF_DMACTL_WPSCNT_THREE	(2 << LPAIF_DMACTL_WPSCNT_SHIFT)
> +#define LPAIF_DMACTL_WPSCNT_FOUR	(3 << LPAIF_DMACTL_WPSCNT_SHIFT)
> +#define LPAIF_DMACTL_WPSCNT_SIX	(5 << LPAIF_DMACTL_WPSCNT_SHIFT)
> +#define LPAIF_DMACTL_WPSCNT_EIGHT	(7 << LPAIF_DMACTL_WPSCNT_SHIFT)
> +
> +#define LPAIF_DMACTL_AUDINTF_MASK	0x0F0
> +#define LPAIF_DMACTL_AUDINTF_SHIFT	4
...
   #define LPAIF_DMACTL_AUDINTF(id)     (id << LPAIF_DMACTL_AUDINTF_SHIFT)


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