Currently setting I915_PSR_DEBUG_SU_REGION_ET_DISABLE (0x20) via psr_debug debugfs interface is not allowed. This patch allows it.
v2: ensure that fastset is performed when the bit changes Signed-off-by: Jouni Högander <[email protected]> --- drivers/gpu/drm/i915/display/intel_psr.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 0e081ea21766..64c5d03aff03 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -3021,10 +3021,12 @@ int intel_psr_debug_set(struct intel_dp *intel_dp, u64 val) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); const u32 mode = val & I915_PSR_DEBUG_MODE_MASK; - u32 old_mode; + const u32 disable_bits = val & I915_PSR_DEBUG_SU_REGION_ET_DISABLE; + u32 old_mode, old_disable_bits; int ret; - if (val & ~(I915_PSR_DEBUG_IRQ | I915_PSR_DEBUG_MODE_MASK) || + if (val & ~(I915_PSR_DEBUG_IRQ | I915_PSR_DEBUG_SU_REGION_ET_DISABLE | + I915_PSR_DEBUG_MODE_MASK) || mode > I915_PSR_DEBUG_ENABLE_SEL_FETCH) { drm_dbg_kms(&dev_priv->drm, "Invalid debug mask %llx\n", val); return -EINVAL; @@ -3034,7 +3036,9 @@ int intel_psr_debug_set(struct intel_dp *intel_dp, u64 val) if (ret) return ret; - old_mode = intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK; + old_mode = intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK; + old_disable_bits = intel_dp->psr.debug & + I915_PSR_DEBUG_SU_REGION_ET_DISABLE; intel_dp->psr.debug = val; /* @@ -3046,7 +3050,7 @@ int intel_psr_debug_set(struct intel_dp *intel_dp, u64 val) mutex_unlock(&intel_dp->psr.lock); - if (old_mode != mode) + if (old_mode != mode || old_disable_bits != disable_bits) ret = intel_psr_fastset_force(dev_priv); return ret; -- 2.34.1
