Adding i915 module parameter for setting drrs_interval. If this param is
set to 0, then drrs is disabled. If changed in runtime, then the new interval
value will be considered for scheduling the next drrs work.
drrs_interval is set to 0 by default, i.e. DRRS is disabled by default.
Signed-off-by: Vandana Kannan <vandana.kannan@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_params.c | 8 ++++++++
drivers/gpu/drm/i915/intel_dp.c | 11 ++++++++++-
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 370cbaa..dba5844 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2381,6 +2381,7 @@ struct i915_params {
int enable_ips;
int invert_brightness;
int enable_cmd_parser;
+ int drrs_interval;
/* leave bools at the end to not create holes */
bool enable_hangcheck;
bool fastboot;
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index c91cb20..80492e8 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -51,6 +51,7 @@ struct i915_params i915 __read_mostly = {
.disable_vtd_wa = 0,
.use_mmio_flip = 0,
.mmio_debug = 0,
+ .drrs_interval = 0,
};
module_param_named(modeset, i915.modeset, int, 0400);
@@ -173,3 +174,10 @@ module_param_named(mmio_debug, i915.mmio_debug, bool, 0600);
MODULE_PARM_DESC(mmio_debug,
"Enable the MMIO debug code (default: false). This may negatively "
"affect performance.");
+
+module_param_named(drrs_interval, i915.drrs_interval, int, 0600);
+MODULE_PARM_DESC(drrs_interval,
+ "DRRS idleness detection interval (default: 0 ms). "
+ "If this field is set to 0, then seamless DRRS feature "
+ "based on idleness detection is disabled. "
+ "The interval is to be set in milliseconds.");
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 092ef91..88f46906 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4931,6 +4931,9 @@ void intel_edp_drrs_invalidate(struct drm_device *dev,
if (!dev_priv->drrs.dp)
return;
+ if (i915.drrs_interval == 0)
+ return;
+
mutex_lock(&dev_priv->drrs.mutex);
crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc;
pipe = to_intel_crtc(crtc)->pipe;
@@ -4958,6 +4961,9 @@ void intel_edp_drrs_flush(struct drm_device *dev,
if (!dev_priv->drrs.dp)
return;
+ if (i915.drrs_interval == 0)
+ return;
+
mutex_lock(&dev_priv->drrs.mutex);
crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc;
pipe = to_intel_crtc(crtc)->pipe;
@@ -4968,7 +4974,7 @@ void intel_edp_drrs_flush(struct drm_device *dev,
if (dev_priv->drrs.refresh_rate_type != DRRS_LOW_RR &&
!dev_priv->drrs.busy_frontbuffer_bits)
schedule_delayed_work(&dev_priv->drrs.work,
- msecs_to_jiffies(1000));
+ msecs_to_jiffies(i915.drrs_interval));
mutex_unlock(&dev_priv->drrs.mutex);
}
@@ -4991,6 +4997,9 @@ intel_dp_drrs_init(struct intel_connector *intel_connector,
return NULL;
}
+ if (i915.drrs_interval == 0)
+ DRM_DEBUG_KMS("DRRS disable by flag\n");
+
downclock_mode = intel_find_panel_downclock
(dev, fixed_mode, connector);
--
2.0.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
