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Subject: Re: [PATCH v5 1/8] drm/fourcc: Add modifier definitions for
 describing Amlogic Video Framebuffer Compression
To:     dri-devel <dri-devel@lists.freedesktop.org>,
        linux-amlogic@lists.infradead.org,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Kevin Hilman <khilman@baylibre.com>
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From:   Neil Armstrong <narmstrong@baylibre.com>
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Organization: Baylibre
Message-ID: <cf9811b6-ecf3-98af-f2ae-73c491a53050@baylibre.com>
Date:   Tue, 21 Apr 2020 15:14:35 +0200
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Sender: linux-kernel-owner@vger.kernel.org
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On 21/04/2020 14:16, Daniel Vetter wrote:
> 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@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)
> 
> lgtm.
> -Daniel

Thanks,

Re-sending with this.

Neil

> 
>>
>> 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
>>>
>>>
>>>
>>
>