1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 4be13a5eb932..835d6099c769 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -32,6 +32,7 @@ struct i915_params i915 __read_mostly = {
         .panel_use_ssc = -1,
         .vbt_sdvo_panel_type = -1,
         .enable_rc6 = -1,
+        .enable_dc = -1,
         .enable_fbc = -1,
         .enable_execlists = -1,
         .enable_hangcheck = true,
@@ -80,6 +81,11 @@ MODULE_PARM_DESC(enable_rc6,
         "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
         "default: -1 (use per-chip default)");
 
+module_param_named_unsafe(enable_dc, i915.enable_dc, int, 0400);
+MODULE_PARM_DESC(enable_dc,
+        "Enable power-saving display C-states. "
+        "(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
+
 module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600);
 MODULE_PARM_DESC(enable_fbc,
         "Enable frame buffer compression for power savings "
@@ -112,7 +118,7 @@ MODULE_PARM_DESC(enable_hangcheck,
 module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400);
 MODULE_PARM_DESC(enable_ppgtt,
         "Override PPGTT usage. "
-        "(-1=auto [default], 0=disabled, 1=aliasing, 2=full)");
+        "(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
 
 module_param_named_unsafe(enable_execlists, i915.enable_execlists, int, 0400);
 MODULE_PARM_DESC(enable_execlists,
@@ -126,7 +132,7 @@ module_param_named_unsafe(preliminary_hw_support, i915.preliminary_hw_support, i
 MODULE_PARM_DESC(preliminary_hw_support,
         "Enable preliminary hardware support.");
 
-module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0600);
+module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0400);
 MODULE_PARM_DESC(disable_power_well,
         "Disable display power wells when possible "
         "(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");