[PATCH 05/16] drm/i915/display: Add debugfs support to avoid joiner

[Ankit Nautiyal]

Currently debugfs for joiner can take a value of 0->dont care and
2->join 2 pipes. Add option to force to use only 1 pipe.

If debugfs is set to 1, force to exactly one pipe (ie. no
joiner despite what the automagic logic is saying).

Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_debugfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c 
b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index 80c499d642dc..af164e340cb3 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -1344,6 +1344,8 @@ static ssize_t i915_joiner_write(struct file *file,
        switch (force_joined_pipes) {
        case 0:
                break;
+       case 1:
+               fallthrough;
        case 2:
                connector->force_joined_pipes = force_joined_pipes;
                break;
-- 
2.45.2