[alsa-devel] [PATCH 1/5] [RFC]intel_hdmi_audio:include header
Bandarupalli, Sailaja
sailaja.bandarupalli at intel.com
Thu Nov 25 06:06:49 CET 2010
> > +#include <linux/types.h>
> > +#include <sound/initval.h>
>
> Usually this header isn't needed in the global header file.
>
We will remove un necessary global header files.
> > +#include "../../../drivers/staging/mrst/drv/mdfld_hdmi_audio_if.h"
> > +#include "../../../drivers/staging/mrst/drv/psb_intel_hdmi.h"
>
> This is bad... If these files are really used over several
> subsystems, they should be put somewhere in a better public place.
>
Currently display driver code is in the staging area. Can we move
header files to include folder?
>
> > +/**
> > + * union aud_cfg - Audio configuration offset - 69000
> > + *
> > + * @cfg_regx: individual register bits
> > + * @cfg_regval: full register value
> > + *
> > + * */
> > +union aud_cfg {
> > + struct {
> > + u32 aud_en:1;
> > + u32 layout:1;
> > + u32 fmt:2;
> > + u32 num_ch:2;
> > + u32 rsvd0:1;
> > + u32 set:1;
> > + u32 flat:1;
> > + u32 val_bit:1;
> > + u32 user_bit:1;
> > + u32 underrun:1;
> > + u32 rsvd1:20;
> > + } cfg_regx;
> > + u32 cfg_regval;
> > +};
>
> In general, better to avoid bit fields if it's used for the data
> transfer. The bit-fields are never portable.
>
These bit fields are used for programming the HDMI controller subsystem.
Thanks,
Sailaja and Ramesh.
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