[Intel-gfx] [RFC] drm/i915/dp: Remove i915.enable_dp_mst module parameter

[Dhinakaran Pandiyan]

MST is enabled by default on all platforms that support it. I don't think
we should be providing a switch to work around MST issues as the feature
has been supported for a while now. Let's kill this module parameter
that we also do not test in CI.

Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
---
 drivers/gpu/drm/i915/i915_params.c | 3 ---
 drivers/gpu/drm/i915/i915_params.h | 1 -
 drivers/gpu/drm/i915/intel_dp.c    | 6 ------
 3 files changed, 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index bd6bd8879cab..ea5961ae6803 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -156,9 +156,6 @@ i915_param_named_unsafe(huc_firmware_path, charp, 0400,
 i915_param_named_unsafe(dmc_firmware_path, charp, 0400,
 	"DMC firmware path to use instead of the default one");
 
-i915_param_named_unsafe(enable_dp_mst, bool, 0600,
-	"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
-
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
 i915_param_named_unsafe(inject_load_failure, uint, 0400,
 	"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index 7e56c516c815..5d995af2ef58 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -65,7 +65,6 @@ struct drm_printer;
 	param(bool, disable_display, false) \
 	param(bool, verbose_state_checks, true) \
 	param(bool, nuclear_pageflip, false) \
-	param(bool, enable_dp_mst, true) \
 	param(bool, enable_dpcd_backlight, false) \
 	param(bool, enable_gvt, false)
 
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 15a981ef5966..b0d8baae6d96 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4054,9 +4054,6 @@ intel_dp_can_mst(struct intel_dp *intel_dp)
 {
 	u8 mstm_cap;
 
-	if (!i915_modparams.enable_dp_mst)
-		return false;
-
 	if (!intel_dp->can_mst)
 		return false;
 
@@ -4072,9 +4069,6 @@ intel_dp_can_mst(struct intel_dp *intel_dp)
 static void
 intel_dp_configure_mst(struct intel_dp *intel_dp)
 {
-	if (!i915_modparams.enable_dp_mst)
-		return;
-
 	if (!intel_dp->can_mst)
 		return;
 
-- 
2.17.1