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From: Matthew Wilcox <willy@infradead.org>
To: Brian Starkey <brian.starkey@arm.com>
Cc: dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch,
	airlied@linux.ie, gustavo@padovan.org,
	maarten.lankhorst@linux.intel.com, seanpaul@chromium.org,
	corbet@lwn.net, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, alexandru-cosmin.gheorghe@arm.com,
	liviu.dudau@arm.com, ayan.halder@arm.com
Subject: Re: [PATCH] drm/fourcc: Add DOC: overview comment
Date: Tue, 21 Aug 2018 09:26:39 -0700	[thread overview]
Message-ID: <20180821162639.GA21697@bombadil.infradead.org> (raw)
In-Reply-To: <20180821161611.10424-1-brian.starkey@arm.com>

On Tue, Aug 21, 2018 at 05:16:11PM +0100, Brian Starkey wrote:
> There's a number of things which haven't previously been documented
> around the usage of format modifiers. Capture the current
> understanding in an overview comment and add it to the rst
> documentation.
> 
> Ideally, the generated documentation would also include documentation
> of all of the #defines, but the kernel-doc system doesn't currently
> support kernel-doc comments on #define constants.

Can you turn them into enums?  This seems to work ok:

-/* color index */
-#define DRM_FORMAT_C8          fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
-
-/* 8 bpp Red */
-#define DRM_FORMAT_R8          fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
+enum {
+       /* color index */
+       DRM_FORMAT_C8   = fourcc_code('C', '8', ' ', ' '), /* [7:0] C */
+       /* 8 bpp Red */
+       DRM_FORMAT_R8   = fourcc_code('R', '8', ' ', ' '), /* [7:0] R */
+};

but I appreciate this is user API and maybe there's some code out there
that does #ifndef DRM_FORMAT_C8 ...

  reply	other threads:[~2018-08-21 16:26 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-21 16:16 [PATCH] drm/fourcc: Add DOC: overview comment Brian Starkey
2018-08-21 16:26 ` Matthew Wilcox [this message]
2018-08-21 16:44   ` Brian Starkey
2018-08-22 14:59     ` Eric Engestrom
2018-08-22 15:11       ` Daniel Vetter
2018-08-22 15:57         ` Brian Starkey
2018-08-23 14:34           ` Matthew Wilcox
2018-08-23 15:40             ` Brian Starkey
2018-08-21 16:51 ` Daniel Vetter
2018-08-21 17:09   ` Alexandru-Cosmin Gheorghe

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