[Intel-gfx] [PATCH v12 04/17] drm/i915/guc/slpc: Enable SLPC in GuC load control params

Sagar Arun Kamble sagar.a.kamble at intel.com
Fri Mar 30 08:31:49 UTC 2018

From: Tom O'Rourke <Tom.O'Rourke at intel.com>

If SLPC is to enabled, then set GUC_CTL_ENABLE_SLPC flag in GuC control
param GUC_CTL_FEATURE word during GuC load. This is required for early
SLPC init in GuC init path. SLPC gets enabled fully on sending this flag
during GuC load and on doing SLPC reset through Host to GuC action.

v1: Use intel_slpc_enabled() (Paulo)

v2-v4: Rebase.

v5: Changed intel_slpc_enabled() to i915.enable_slpc. (Sagar)

v6: Changed i915.enable_slpc to intel_slpc_enabled(). (Sagar)

v7: Rebase.

v8: Rebase.

Signed-off-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg at intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Sujaritha Sundaresan <sujaritha.sundaresan at intel.com>
Cc: Jeff McGee <jeff.mcgee at intel.com>
 drivers/gpu/drm/i915/intel_guc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index a00a59a..c8d3ffb 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -272,6 +272,9 @@ void intel_guc_init_params(struct intel_guc *guc)
+	if (USES_GUC_SLPC(dev_priv))
 	params[GUC_CTL_LOG_PARAMS] = guc->log.flags;
 	params[GUC_CTL_DEBUG] = get_log_control_flags();

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