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Message-Id: <20240702-drm-bridge-connector-fix-hdmi-reset-v3-1-12b0e3124ca4@linaro.org>
Date: Tue, 02 Jul 2024 12:48:52 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Dave Stevenson <dave.stevenson@...pberrypi.com>
Cc: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
dri-devel@...ts.freedesktop.org, igt-dev@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/4] drm/drm_property: require DRM_MODE_PROP_IMMUTABLE
for single-value props
Document that DRM_MODE_PROP_IMMUTABLE must be set for the properties
that are immutable by definition - e.g. ranges with min == max or enums
with a single value. This matches the behaviour of the IGT tests, see
kms_properties.c / validate_range_prop(), validate_enum_prop(),
validate_bitmask_prop().
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
include/drm/drm_property.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/drm/drm_property.h b/include/drm/drm_property.h
index 082f29156b3e..7d0f793f50ca 100644
--- a/include/drm/drm_property.h
+++ b/include/drm/drm_property.h
@@ -162,6 +162,9 @@ struct drm_property {
* userspace, e.g. the EDID, or the connector path property on DP
* MST sinks. Kernel can update the value of an immutable property
* by calling drm_object_property_set_value().
+ * This flag should be set for all properties that have only a
+ * single value (e.g. min == max or if enum has only a single
+ * value).
*/
uint32_t flags;
--
2.39.2
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