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| author | Nathan Schulte <nmschulte@gmail.com> | 2016-03-15 10:14:05 -0500 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-03-16 16:40:50 +0100 |
| commit | 7cc96139d9e3f627bd18e5ee6a5e4e305369865b (patch) | |
| tree | 4444d6193998d3f6bef72ba0a59b9b96c601279e /drivers/gpu/drm/i915/i915_params.c | |
| parent | 117897f42c87c11a3a8315507d38cbd99ea46fda (diff) | |
| download | blackbird-obmc-linux-7cc96139d9e3f627bd18e5ee6a5e4e305369865b.tar.gz blackbird-obmc-linux-7cc96139d9e3f627bd18e5ee6a5e4e305369865b.zip | |
drm/i915: add module param "enable_dp_mst"
Adds an (unsafe; auto-kernel-tainting) boolean module parameter to the i915
drm driver: "enable_dp_mst", which is enabled by default. Disabling the
parameter forces newly connected DisplayPort sinks to report as not
supporting multi-stream transport (MST), thus "forcing" the use of
single-stream transport (SST).
v2: rename parameter to conform to style
v3: add signoff
Signed-off-by: Nathan Schulte <nmschulte@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1458054845-5837-1-git-send-email-nmschulte@gmail.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_params.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_params.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index 278c9c40c2e0..97691f1f679c 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -56,6 +56,7 @@ struct i915_params i915 __read_mostly = { .edp_vswing = 0, .enable_guc_submission = false, .guc_log_level = -1, + .enable_dp_mst = true, }; module_param_named(modeset, i915.modeset, int, 0400); @@ -201,3 +202,7 @@ MODULE_PARM_DESC(enable_guc_submission, "Enable GuC submission (default:false)") module_param_named(guc_log_level, i915.guc_log_level, int, 0400); MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (-1:disabled (default), 0-3:enabled)"); + +module_param_named_unsafe(enable_dp_mst, i915.enable_dp_mst, bool, 0600); +MODULE_PARM_DESC(enable_dp_mst, + "Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)"); |
