From a9ff9f1302c223049ce5e49cade606674b3411d5 Mon Sep 17 00:00:00 2001
From: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Date: Wed, 15 Apr 2020 17:39:04 +0300
Subject: drm/i915: Add pre/post plane updates for SAGV
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Git-commit: 680e1af713d92940e39a313a8592b13a6885a14c
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Lets have a unified way to handle SAGV changes,
espoecially considering the upcoming Gen12 changes.
Current "standard" way of doing this in commit_tail
is pre/post plane updates, when everything which
has to be forbidden and not supported in new config
has to be restricted before update and relaxed after
plane update.
v2: - Removed unneeded returns(Ville)
Reviewed-by: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrj채l채 <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200415143911.10244-5-stanislav.lisovskiy@intel.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_display.c | 13 ++++---------
drivers/gpu/drm/i915/intel_pm.c | 16 ++++++++++++++++
drivers/gpu/drm/i915/intel_pm.h | 2 ++
3 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3afcfedb8627..55f150ac4c1a 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -15353,12 +15353,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
intel_set_cdclk_pre_plane_update(state);
- /*
- * SKL workaround: bspec recommends we disable the SAGV when we
- * have more then one pipe enabled
- */
- if (!intel_can_enable_sagv(state))
- intel_disable_sagv(dev_priv);
+ intel_sagv_pre_plane_update(state);
intel_modeset_verify_disabled(dev_priv, state);
}
@@ -15455,11 +15450,11 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
- if (state->modeset)
+ if (state->modeset) {
intel_verify_planes(state);
- if (state->modeset && intel_can_enable_sagv(state))
- intel_enable_sagv(dev_priv);
+ intel_sagv_post_plane_update(state);
+ }
drm_atomic_helper_commit_hw_done(&state->base);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9b0597c961a7..fac233c1470d 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3757,6 +3757,22 @@ intel_disable_sagv(struct drm_i915_private *dev_priv)
return 0;
}
+void intel_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+
+ if (!intel_can_enable_sagv(state))
+ intel_disable_sagv(dev_priv);
+}
+
+void intel_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+ struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+
+ if (intel_can_enable_sagv(state))
+ intel_enable_sagv(dev_priv);
+}
+
static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc_state->uapi.crtc->dev;
diff --git a/drivers/gpu/drm/i915/intel_pm.h b/drivers/gpu/drm/i915/intel_pm.h
index d60a85421c5a..9a6036ab0f90 100644
--- a/drivers/gpu/drm/i915/intel_pm.h
+++ b/drivers/gpu/drm/i915/intel_pm.h
@@ -44,6 +44,8 @@ void vlv_wm_sanitize(struct drm_i915_private *dev_priv);
bool intel_can_enable_sagv(struct intel_atomic_state *state);
int intel_enable_sagv(struct drm_i915_private *dev_priv);
int intel_disable_sagv(struct drm_i915_private *dev_priv);
+void intel_sagv_pre_plane_update(struct intel_atomic_state *state);
+void intel_sagv_post_plane_update(struct intel_atomic_state *state);
bool skl_wm_level_equals(const struct skl_wm_level *l1,
const struct skl_wm_level *l2);
bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
--
2.28.0