[Intel-gfx] [PATCH 01/11] drm/i915: Run psr_setup unconditionally

[Rodrigo Vivi]

From: Daniel Vetter <daniel.vetter at ffwll.ch>

Due to runtime pm and system s/r we need to restore hw state every
time we enable a pipe again. Hence trying to avoid that is just
pointless book-keeping which Rodrigo then tried to work around by
manually adding psr_setup calls to our resume code.

Much simpler to just remove code instead.

v2: Properly bail out of psr exit if psr isn't enabled. Spotted by
Rodrigo.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h | 1 -
 drivers/gpu/drm/i915/intel_dp.c | 7 +------
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a89c912..91f137f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -657,7 +657,6 @@ struct i915_drrs {
 struct i915_psr {
 	bool sink_support;
 	bool source_ok;
-	bool setup_done;
 	bool enabled;
 	bool active;
 	struct delayed_work work;
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index ae3737c..302cdaa 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1714,9 +1714,6 @@ static void intel_edp_psr_setup(struct intel_dp *intel_dp)
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct edp_vsc_psr psr_vsc;
 
-	if (dev_priv->psr.setup_done)
-		return;
-
 	/* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */
 	memset(&psr_vsc, 0, sizeof(psr_vsc));
 	psr_vsc.sdp_header.HB0 = 0;
@@ -1728,8 +1725,6 @@ static void intel_edp_psr_setup(struct intel_dp *intel_dp)
 	/* Avoid continuous PSR exit by masking memup and hpd */
 	I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
 		   EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
-
-	dev_priv->psr.setup_done = true;
 }
 
 static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp)
@@ -1961,7 +1956,7 @@ void intel_edp_psr_exit(struct drm_device *dev)
 	if (!HAS_PSR(dev))
 		return;
 
-	if (!dev_priv->psr.setup_done)
+	if (!dev_priv->psr.enabled)
 		return;
 
 	cancel_delayed_work_sync(&dev_priv->psr.work);
-- 
1.9.3