Properties are uapi like anything else, with all the usual rules
regarding review, testcases, open source userspace ... Furthermore
driver-private kms properties are highly discouraged, over the past
few years we've realized we need to make a serious effort at better
standardizing this stuff.
Again this probably needs multiple pieces to solve this properly:
- To make plane configuration less surprising to userspace you
propably need to virtualize planes, and reorder which logical plane
you map to which physical one dynamically. Instead of exposing a
komeda-specific limitation to userspace and expecting them to dtrt.
I think msm and rcar-du do that already (and others), if you need
people to chat with or example code.
- If this is needed for validation, again ->atomic_print_state and the
infrastructure around that is your friend.
Fixes: 3b9dfa4ef28c ("drm/komeda: Add slave pipeline support")
Cc: Lowry Li (Arm Technology China) <lowry...@arm.com>
Cc: James Qian Wang (Arm Technology China) <james.qian.w...@arm.com>
Cc: Liviu Dudau <liviu.du...@arm.com>
Cc: Mali DP Maintainers <mal...@foss.arm.com>
Cc: Brian Starkey <brian.star...@arm.com>
Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
---
.../gpu/drm/arm/display/komeda/komeda_crtc.c | 24 -------------------
.../gpu/drm/arm/display/komeda/komeda_kms.h | 3 ---
2 files changed, 27 deletions(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
index e852dc27f1b8..f4400788ab94 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -499,26 +499,6 @@ int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
return 0;
}
-static int komeda_crtc_create_slave_planes_property(struct komeda_crtc *kcrtc)
-{
- struct drm_crtc *crtc = &kcrtc->base;
- struct drm_property *prop;
-
- if (kcrtc->slave_planes == 0)
- return 0;
-
- prop = drm_property_create_range(crtc->dev, DRM_MODE_PROP_IMMUTABLE,
- "slave_planes", 0, U32_MAX);
- if (!prop)
- return -ENOMEM;
-
- drm_object_attach_property(&crtc->base, prop, kcrtc->slave_planes);
-
- kcrtc->slave_planes_property = prop;
-
- return 0;
-}
-
static struct drm_plane *
get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
{
@@ -555,10 +535,6 @@ static int komeda_crtc_add(struct komeda_kms_dev *kms,
crtc->port = kcrtc->master->of_output_port;
- err = komeda_crtc_create_slave_planes_property(kcrtc);
- if (err)
- return err;
-
return err;
}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
index 2775f34bf4ab..c545cb963d40 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
@@ -94,9 +94,6 @@ struct komeda_crtc {
/** @disable_done: this flip_done is for tracing the disable */
struct completion *disable_done;
-
- /** @slave_planes_property: property for slaves of the planes */
- struct drm_property *slave_planes_property;
};
/**
--
2.20.1
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