[PATCH v5 15/27] drm/i915/slpc: Send shutdown event
Sagar Arun Kamble
sagar.a.kamble at intel.com
Sat Jul 2 06:16:11 UTC 2016
From: Tom O'Rourke <Tom.O'Rourke at intel.com>
Send SLPC shutdown event during disable, suspend, and reset
operations. Sending shutdown event while already shutdown
is OK.
v2: return void instead of ignored error code (Paulo)
v5: Removed WARN_ON for checking msb of gtt address of
shared gem obj. (ChrisW)
Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
---
drivers/gpu/drm/i915/intel_slpc.c | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_slpc.c b/drivers/gpu/drm/i915/intel_slpc.c
index deb0a7c..4d84e0a 100644
--- a/drivers/gpu/drm/i915/intel_slpc.c
+++ b/drivers/gpu/drm/i915/intel_slpc.c
@@ -53,6 +53,20 @@ static void host2guc_slpc_reset(struct drm_i915_private *dev_priv)
host2guc_slpc(dev_priv, data, 4);
}
+static void host2guc_slpc_shutdown(struct drm_i915_private *dev_priv)
+{
+ struct drm_i915_gem_object *obj = dev_priv->guc.slpc.shared_data_obj;
+ u32 data[4];
+ u64 shared_data_gtt_offset = i915_gem_obj_ggtt_offset(obj);
+
+ data[0] = HOST2GUC_ACTION_SLPC_REQUEST;
+ data[1] = SLPC_EVENT(SLPC_EVENT_SHUTDOWN, 2);
+ data[2] = lower_32_bits(shared_data_gtt_offset);
+ data[3] = upper_32_bits(shared_data_gtt_offset);
+
+ host2guc_slpc(dev_priv, data, 4);
+}
+
static u8 slpc_get_platform_sku(struct drm_i915_gem_object *obj)
{
struct drm_device *dev = obj->base.dev;
@@ -142,12 +156,14 @@ void intel_slpc_cleanup(struct drm_i915_private *dev_priv)
void intel_slpc_suspend(struct drm_i915_private *dev_priv)
{
- return;
+ if (intel_slpc_active(dev_priv))
+ host2guc_slpc_shutdown(dev_priv);
}
void intel_slpc_disable(struct drm_i915_private *dev_priv)
{
- return;
+ if (intel_slpc_active(dev_priv))
+ host2guc_slpc_shutdown(dev_priv);
}
void intel_slpc_enable(struct drm_i915_private *dev_priv)
@@ -163,5 +179,8 @@ void intel_slpc_enable(struct drm_i915_private *dev_priv)
void intel_slpc_reset(struct drm_i915_private *dev_priv)
{
- return;
+ if (intel_slpc_active(dev_priv)) {
+ host2guc_slpc_shutdown(dev_priv);
+ host2guc_slpc_reset(dev_priv);
+ }
}
--
1.9.1
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