Due to switch between console and graphics modes multiple psr_enable
call will be made. On such occasions, to avoid repeated psr_setup,
a flag called psr_setup_done is used.
On suspend-resume, panel goes for a power cycle. Hence PSR setup
should be redone to enable the PSR after suspend-resume.
So this patch resets the corresponding flag, if it is set during the
panel powerup process.
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ddi.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 74749c6..686f8f6 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1201,6 +1201,11 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
ironlake_edp_panel_on(intel_dp);
+
+ /* Resetting the flag, to redo the PSR setup after
+ * panel powercycle */
+ if (intel_dp->psr_setup_done)
+ intel_dp->psr_setup_done = false;
}
WARN_ON(intel_crtc->ddi_pll_sel == PORT_CLK_SEL_NONE);
--
1.7.9.5
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