[PATCH 1/5] drm/i915/psr: Allow PSR2 to be enabled when debugfs asks

["José Roberto de Souza" <jose.souza@intel.com>]

For now PSR2 is still disabled by default for all platforms but is
our intention to let debugfs to enable it for debug and tests
proporses, so intel_psr2_enabled() that is also used by debugfs to
decide if PSR2 is going to be enabled needs to take in consideration
the debug field.

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/intel_psr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 4c4dd1c310ce..15a2121aa64f 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -71,8 +71,11 @@ static bool psr_global_enabled(u32 debug)
 static bool intel_psr2_enabled(struct drm_i915_private *dev_priv,
 			       const struct intel_crtc_state *crtc_state)
 {
+	const u32 debug_mode = dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK;
+
 	/* Disable PSR2 by default for all platforms */
-	if (i915_modparams.enable_psr == -1)
+	if (i915_modparams.enable_psr == -1 &&
+	    debug_mode != I915_PSR_DEBUG_ENABLE)
 		return false;
 
 	/* Cannot enable DSC and PSR2 simultaneously */
-- 
2.19.2

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