Re: [PATCH v5 1/8] drm/fourcc: Add modifier definitions for describing Amlogic Video Framebuffer Compression

[Daniel Vetter]

On Mon, Apr 20, 2020 at 12:21:24PM +0200, Neil Armstrong wrote:
> On 17/04/2020 20:14, Daniel Vetter wrote:
> > On Fri, Apr 17, 2020 at 6:05 PM Neil Armstrong <narmstrong@xxxxxxxxxxxx> wrote:
> >>
> >> On 17/04/2020 17:07, Daniel Vetter wrote:
> 
> [...]
> 
> > 
> > Yup there's a number of parametried modifiers. As long as the stuff
> > you get from a DRM_FORMAT_MOD_ ... macro is a full modifier with
> > everything it should be all fine.
> 
> Would something like that be ok ?
> 
> #define __fourcc_mod_amlogic_layout_mask 0xf
> #define __fourcc_mod_amlogic_options_shift 8
> #define __fourcc_mod_amlogic_options_mask 0xf
> 
> #define DRM_FORMAT_MOD_AMLOGIC_FBC(__layout, __options) \
> 	fourcc_mod_code(AMLOGIC, \
> 			((__layout) & __fourcc_mod_amlogic_layout_mask) | \
> 			((options) & __fourcc_mod_amlogic_options_mask \
> 			 << __fourcc_mod_amlogic_options_shift))
> 
> /* Amlogic FBC Layouts */
> 
> /* bla */
> #define AMLOGIC_FBC_LAYOUT_BASIC		(1ULL)
> 
> /* bla */
> #define AMLOGIC_FBC_LAYOUT_SCATTER		(2ULL)
> 
> /* Amlogic FBC Layout Options Bit Mask */
> 
> /* bla */
> #define AMLOGIC_FBC_OPTION_MEM_SAVING		(1ULL << 0)

lgtm.
-Daniel

> 
> Neil
> 
> > -Daniel
> > 
> >> Neil
> >>
> >>> -Daniel
> >>>
> >>>> +
> >>>>  #if defined(__cplusplus)
> >>>>  }
> >>>>  #endif
> >>>> --
> >>>> 2.22.0
> >>>>
> >>>
> >>
> >> _______________________________________________
> >> dri-devel mailing list
> >> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> >> https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> > 
> > 
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch