From 26edd4e4a077cc0d0e80a442bff00467f4fffefa Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Sun, 29 Mar 2020 14:45:08 +0000
Subject: drm: add docs about the IN_FORMATS plane property
Git-commit: e6219defd36653c531b8da5e83f55a8d0796dc72
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

This is a standard property attached to planes in drm_universal_plane_init
when drm_mode_config.allow_fb_modifiers is true.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/mHOtz80Wa-x3A5Lz5ETTM65VUMfW1j6b-iCuvIy1RzOM1EloHPqAb2MnbU8ygZi0ABaLrxuN6pzu0v3QRn83125C0bXuHoo-DQWWEd80fdw=@emersion.fr
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/drm_blend.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c
index 121481f6aa71..88eedee018d3 100644
--- a/drivers/gpu/drm/drm_blend.c
+++ b/drivers/gpu/drm/drm_blend.c
@@ -183,6 +183,12 @@
  *		 plane does not expose the "alpha" property, then this is
  *		 assumed to be 1.0
  *
+ * IN_FORMATS:
+ *	Blob property which contains the set of buffer format and modifier
+ *	pairs supported by this plane. The blob is a drm_format_modifier_blob
+ *	struct. Without this property the plane doesn't support buffers with
+ *	modifiers. Userspace cannot change this property.
+ *
  * Note that all the property extensions described here apply either to the
  * plane or the CRTC (e.g. for the background color, which currently is not
  * exposed and assumed to be black).
-- 
2.28.0