drm/intel: add enable_psr module option and disable psr by default

v2: prefer seq_puts to seq_printf detected by Paulo Zanoni.
v3: PSR is disabled by default. Without userspace ready it
    will cause regression for kde and xdm users

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 973f2727d703..9d871c7eeaee 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1565,6 +1565,9 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
                 case PSR_NO_SINK:
                         seq_puts(m, "not supported by panel");
                         break;
+                case PSR_MODULE_PARAM:
+                        seq_puts(m, "disabled by flag");
+                        break;
                 case PSR_CRTC_NOT_ACTIVE:
                         seq_puts(m, "crtc not active");
                         break;