[RFC PATCH v2 01/17] drm/atomic: Allow get_value for immutable properties on atomic drivers

[Harry Wentland]

drm_colorops use immutable properties, for type and next.
Even though drivers create these properties at initialization
they will need to look at the properties when parsing a
color pipeline for programming during an atomic check
or commit operation.

This aligns the get_value call with behavior of the set_value
call.

Signed-off-by: Harry Wentland <harry.wentland at amd.com>
Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Pekka Paalanen <pekka.paalanen at collabora.com>
Cc: Simon Ser <contact at emersion.fr>
Cc: Harry Wentland <harry.wentland at amd.com>
Cc: Melissa Wen <mwen at igalia.com>
Cc: Jonas Ådahl <jadahl at redhat.com>
Cc: Sebastian Wick <sebastian.wick at redhat.com>
Cc: Shashank Sharma <shashank.sharma at amd.com>
Cc: Alexander Goins <agoins at nvidia.com>
Cc: Joshua Ashton <joshua at froggi.es>
Cc: Michel Dänzer <mdaenzer at redhat.com>
Cc: Aleix Pol <aleixpol at kde.org>
Cc: Xaver Hugl <xaver.hugl at gmail.com>
Cc: Victoria Brekenfeld <victoria at system76.com>
Cc: Sima <daniel at ffwll.ch>
Cc: Uma Shankar <uma.shankar at intel.com>
Cc: Naseer Ahmed <quic_naseer at quicinc.com>
Cc: Christopher Braga <quic_cbraga at quicinc.com>
Cc: Abhinav Kumar <quic_abhinavk at quicinc.com>
Cc: Arthur Grillo <arthurgrillo at riseup.net>
Cc: Hector Martin <marcan at marcan.st>
Cc: Liviu Dudau <Liviu.Dudau at arm.com>
Cc: Sasha McIntosh <sashamcintosh at google.com>
---
 drivers/gpu/drm/drm_mode_object.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
index ac0d2ce3f870..c9b1cd48547a 100644
--- a/drivers/gpu/drm/drm_mode_object.c
+++ b/drivers/gpu/drm/drm_mode_object.c
@@ -351,7 +351,8 @@ static int __drm_object_property_get_value(struct drm_mode_object *obj,
 int drm_object_property_get_value(struct drm_mode_object *obj,
 				  struct drm_property *property, uint64_t *val)
 {
-	WARN_ON(drm_drv_uses_atomic_modeset(property->dev));
+	WARN_ON(drm_drv_uses_atomic_modeset(property->dev) &&
+		!(property->flags & DRM_MODE_PROP_IMMUTABLE));
 
 	return __drm_object_property_get_value(obj, property, val);
 }
-- 
2.42.0