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From 38000dcf0fb7b936d041df95a9534e73b122a7fd Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Thu, 4 Oct 2018 11:46:07 -0400
Subject: [PATCH 1881/2940] drm: Add vrr_enabled property to drm CRTC
This patch introduces the 'vrr_enabled' CRTC property to allow
dynamic control over variable refresh rate support for a CRTC.
This property should be treated like a content hint to the driver -
if the hardware or driver is not capable of driving variable refresh
timings then this is not considered an error.
Capability for variable refresh rate support should be determined
by querying the vrr_capable drm connector property.
It is worth noting that while the property is intended for atomic use
it isn't filtered from legacy userspace queries. This allows for Xorg
userspace drivers to implement support.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/drm_atomic.c | 4 ++++
drivers/gpu/drm/drm_crtc.c | 2 ++
drivers/gpu/drm/drm_mode_config.c | 6 ++++++
include/drm/drm_mode_config.h | 5 +++++
4 files changed, 17 insertions(+)
mode change 100644 => 100755 drivers/gpu/drm/drm_crtc.c
mode change 100644 => 100755 drivers/gpu/drm/drm_mode_config.c
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index a086934b95f9..2ca381b0cd9a 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -558,6 +558,8 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
drm_property_blob_put(mode);
return ret;
+ } else if (property == config->prop_vrr_enabled) {
+ state->vrr_enabled = val;
} else if (property == config->degamma_lut_property) {
ret = drm_atomic_replace_property_blob_from_id(dev,
&state->degamma_lut,
@@ -632,6 +634,8 @@ drm_atomic_crtc_get_property(struct drm_crtc *crtc,
*val = state->active;
else if (property == config->prop_mode_id)
*val = (state->mode_blob) ? state->mode_blob->base.id : 0;
+ else if (property == config->prop_vrr_enabled)
+ *val = state->vrr_enabled;
else if (property == config->degamma_lut_property)
*val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
else if (property == config->ctm_property)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
old mode 100644
new mode 100755
index 9cbe8f5c9aca..162123ec50ef
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -337,6 +337,8 @@ int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
drm_object_attach_property(&crtc->base,
config->prop_out_fence_ptr, 0);
+ drm_object_attach_property(&crtc->base,
+ config->prop_vrr_enabled, 0);
}
return 0;
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
old mode 100644
new mode 100755
index 21e353bd3948..1708943b051c
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -311,6 +311,12 @@ static int drm_mode_create_standard_properties(struct drm_device *dev)
return -ENOMEM;
dev->mode_config.prop_mode_id = prop;
+ prop = drm_property_create_bool(dev, 0,
+ "VRR_ENABLED");
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.prop_vrr_enabled = prop;
+
prop = drm_property_create(dev,
DRM_MODE_PROP_BLOB,
"DEGAMMA_LUT", 0);
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index a0b202e1d69a..d662e07db786 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -639,6 +639,11 @@ struct drm_mode_config {
* connectors must be of and active must be set to disabled, too.
*/
struct drm_property *prop_mode_id;
+ /**
+ * @prop_vrr_enabled: Default atomic CRTC property to indicate
+ * whether variable refresh rate should be enabled on the CRTC.
+ */
+ struct drm_property *prop_vrr_enabled;
/**
* @dvi_i_subconnector_property: Optional DVI-I property to
--
2.17.1
|
