IPC was only added in SKL+(actually we don't even enable for SKL due
WA) so without this change, driver was writing to a reserved bit.
Also removing the uncessary dev_priv->ipc_enabled = false; as now
gens without IPC will not have IPC enabled.
v2(Rodrigo):
- moved the new handling of WA #0477 to the next patch
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1db9b8328275..e2ca04534e23 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6117,6 +6117,9 @@ void intel_enable_ipc(struct drm_i915_private *dev_priv)
{
u32 val;
+ if (!HAS_IPC(dev_priv))
+ return;
+
/* Display WA #0477 WaDisableIPC: skl */
if (IS_SKYLAKE(dev_priv))
dev_priv->ipc_enabled = false;
@@ -6138,7 +6141,6 @@ void intel_enable_ipc(struct drm_i915_private *dev_priv)
void intel_init_ipc(struct drm_i915_private *dev_priv)
{
- dev_priv->ipc_enabled = false;
if (!HAS_IPC(dev_priv))
return;
--
2.19.0
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