On Tue, 2018-03-27 at 21:43 +0200, Takashi Iwai wrote:
> On Tue, 27 Mar 2018 20:39:45 +0200,
> Ranjani Sridharan wrote:
> >
> > This patch adds macros for accessing the type, length, min, mute
> > and step items in TLV data. These will be used by drivers to
> > extract
> > the TLV data while loading topology.
> >
> > Signed-off-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx
> > >
>
> The subject is wrongly prefixed. This is ALSA core API stuff, not
> about ASoC.
Will fix this in v2.
>
> And about the change...
>
> > --- a/include/sound/tlv.h
> > +++ b/include/sound/tlv.h
> > @@ -49,6 +49,11 @@
> >
> > #define TLV_DB_GAIN_MUTE SNDRV_CTL_TLVD_DB_GAIN_MUT
> > E
> >
> > +#define TLV_ITEM_TYPE SNDRV_CTL_TLVD_ITEM_T
> > YPE
> > +#define TLV_ITEM_LEN SNDRV_CTL_TLVD_ITEM_LE
> > N
> > +#define TLV_DB_MIN SNDRV_CTL_TLVD_DB_SCALE_
> > MIN
> > +#define TLV_DB_MUTE_AND_STEP SNDRV_CTL_TLVD_DB_SCAL
> > E_MUTE_AND_STEP
>
> What's the reason of these redundant redefinitions?
I followed the other definitions in this file which were aliases to the
ones in uapi/sound/tlv.h. I suppose these can be avoided. I'll fix this
in v2.
>
>
> > --- a/include/uapi/sound/tlv.h
> > +++ b/include/uapi/sound/tlv.h
> > @@ -60,6 +60,13 @@
> > unsigned int name[] = { \
> > SNDRV_CTL_TLVD_DB_SCALE_ITEM(min, step, mute) \
> > }
> > +/* Accessor macros for TLV type and len */
> > +#define SNDRV_CTL_TLVD_ITEM_TYPE 0
> > +#define SNDRV_CTL_TLVD_ITEM_LEN 1
> > +
> > +/* Accessor macros for min, mute and step values from dB scale
> > type TLV */
> > +#define SNDRV_CTL_TLVD_DB_SCALE_MIN 2
> > +#define SNDRV_CTL_TLVD_DB_SCALE_MUTE_AND_STEP 3
>
> These are no "macros" but constants. And, they use the same prefix
> SNDRV_CTL_TLVD_* as other existing macros. SNDTV_CTL_TLVD_*() is a
> macro to define/expand a TLV descriptor. It's not for defining the
> offset value as added in the patch.
>
> That is, better to choose another unique prefix to distinguish the
> definitions clearly.
Sure, will change the prefix as well. Thanks!
>
>
> thanks,
>
> Takashi
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