Let userspace know the status of Panel Self-Refresh by virtue of a
property on the appropriate connector.
v2: Only attach the property if the driver is capable of PSR.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_dp.c | 13 +++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 1 +
drivers/gpu/drm/i915/intel_modes.c | 29 +++++++++++++++++++++++++++++
4 files changed, 44 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bdb419c48016..92561bdde201 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -642,6 +642,7 @@ struct i915_psr {
bool enabled;
bool active;
struct delayed_work work;
+ struct drm_property *property;
};
enum intel_pch {
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index e3ad8a7c9fd0..51c0799ea83d 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1820,6 +1820,12 @@ static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp)
return true;
}
+static void intel_edp_set_psr_property(struct intel_connector *connector, uint64_t val)
+{
+ drm_object_property_set_value(&connector->base.base,
+ to_i915(connector->base.dev)->psr.property, val);
+}
+
static void intel_edp_psr_do_enable(struct intel_dp *intel_dp)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
@@ -1835,6 +1841,8 @@ static void intel_edp_psr_do_enable(struct intel_dp *intel_dp)
/* Enable PSR on the host */
intel_edp_psr_enable_source(intel_dp);
+ intel_edp_set_psr_property(intel_dp->attached_connector, 1);
+
dev_priv->psr.enabled = true;
dev_priv->psr.active = true;
}
@@ -1931,6 +1939,7 @@ void intel_edp_psr_inactivate(struct drm_device *dev)
intel_dp = enc_to_intel_dp(&encoder->base);
intel_crtc = to_intel_crtc(encoder->base.crtc);
+ intel_edp_set_psr_property(connector, 0);
dev_priv->psr.active = false;
I915_WRITE(EDP_PSR_CTL(dev), I915_READ(EDP_PSR_CTL(dev))
@@ -3349,6 +3358,8 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
dev_priv->psr.sink_support = true;
DRM_DEBUG_KMS("Detected EDP PSR Panel.\n");
}
+ intel_edp_set_psr_property(intel_dp->attached_connector,
+ dev_priv->psr.sink_support ? dev_priv->psr.active : -1);
}
/* Training Pattern 3 support */
@@ -3977,6 +3988,8 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
intel_dp->color_range_auto = true;
if (is_edp(intel_dp)) {
+ if (HAS_PSR(connector->dev))
+ intel_attach_psr_property(connector);
drm_mode_create_scaling_mode_property(connector->dev);
drm_object_attach_property(
&connector->base,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index cfe140a74266..9c8524016e4b 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -905,6 +905,7 @@ int intel_connector_update_modes(struct drm_connector *connector,
int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
void intel_attach_force_audio_property(struct drm_connector *connector);
void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
+void intel_attach_psr_property(struct drm_connector *connector);
/* intel_overlay.c */
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index 0e860f39933d..6c14c97fa8df 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -126,3 +126,32 @@ intel_attach_broadcast_rgb_property(struct drm_connector *connector)
drm_object_attach_property(&connector->base, prop, 0);
}
+
+static const struct drm_prop_enum_list psr_names[] = {
+ { -1, "Unsupported" },
+ { 0, "Idle" },
+ { 1, "Active" },
+};
+
+void
+intel_attach_psr_property(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_property *prop;
+
+ prop = dev_priv->psr.property;
+ if (prop == NULL) {
+ prop = drm_property_create_enum(dev,
+ DRM_MODE_PROP_ENUM | DRM_MODE_PROP_IMMUTABLE,
+ "Panel Self-Refresh",
+ psr_names,
+ ARRAY_SIZE(psr_names));
+ if (prop == NULL)
+ return;
+
+ dev_priv->psr.property = prop;
+ }
+
+ drm_object_attach_property(&connector->base, prop, 0);
+}
--
2.0.0
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