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SubjectRe: [PATCH v5 1/8] drm/fourcc: Add modifier definitions for describing Amlogic Video Framebuffer Compression
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On 17/04/2020 20:14, Daniel Vetter wrote:
> On Fri, Apr 17, 2020 at 6:05 PM Neil Armstrong <narmstrong@baylibre.com> 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)

Neil

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

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