[Intel-gfx] [PATCH v4 7/7] drm/i915/guc: change default to using GuC submission if possible

[Dave Gordon]

This patch simply changes the default value of "enable_guc_submission"
from 0 (never) to -1 (auto). This means that GuC submission will be
used if the platform has a GuC, the GuC supports the request submission
protocol, and any required GuC firmwware was successfully loaded. If any
of these conditions are not met, the driver will fall back to using
execlist mode.

Signed-off-by: Dave Gordon <david.s.gordon at intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/i915_params.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 6a5578c..573e787 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -55,7 +55,7 @@ struct i915_params i915 __read_mostly = {
 	.nuclear_pageflip = 0,
 	.edp_vswing = 0,
 	.enable_guc_loading = -1,
-	.enable_guc_submission = 0,
+	.enable_guc_submission = -1,
 	.guc_log_level = -1,
 	.enable_dp_mst = true,
 	.inject_load_failure = 0,
@@ -207,7 +207,7 @@ struct i915_params i915 __read_mostly = {
 module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400);
 MODULE_PARM_DESC(enable_guc_submission,
 		"Enable GuC submission "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
+		"(-1=auto [default], 0=never, 1=if available, 2=required)");
 
 module_param_named(guc_log_level, i915.guc_log_level, int, 0400);
 MODULE_PARM_DESC(guc_log_level,
-- 
1.9.1