Suspend resume is broken if we try to enable/disable dc9 on
cases with disabled displays.
v2: Make checkpatch happy:
- braces {} are not necessary for single statement blocks
v3: Also move hsw/bdw PC8 sequences since they are related to
display PM anyways. (Ville)
v4: Rebase after a long time, plus Move functions to the new
intel_display_power so we can stop exporting platform specific
functions as pointed by Jani.
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
.../drm/i915/display/intel_display_power.c | 67 +++++++++++++++++++
.../drm/i915/display/intel_display_power.h | 17 ++---
drivers/gpu/drm/i915/i915_drv.c | 56 ++++------------
3 files changed, 84 insertions(+), 56 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 93a148684c53..530b119a3a3b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -5189,3 +5189,70 @@ static void intel_power_domains_verify_state(struct drm_i915_private *i915)
}
#endif
+
+void intel_display_power_suspend_late(struct drm_i915_private *i915)
+{
+ if (!HAS_DISPLAY(i915))
+ return;
+
+ if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915))
+ bxt_enable_dc9(i915);
+ else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
+ hsw_enable_pc8(i915);
+}
+
+void intel_display_power_resume_early(struct drm_i915_private *i915)
+{
+ if (!HAS_DISPLAY(i915))
+ return;
+
+ if (INTEL_GEN(i915) >= 11 || IS_GEN9_LP(i915)) {
+ gen9_sanitize_dc_state(i915);
+ bxt_disable_dc9(i915);
+ } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+ hsw_disable_pc8(i915);
+ }
+}
+
+void intel_display_power_suspend(struct drm_i915_private *i915)
+{
+ if (!HAS_DISPLAY(i915))
+ return;
+
+ if (INTEL_GEN(i915) >= 11) {
+ icl_display_core_uninit(i915);
+ bxt_enable_dc9(i915);
+ } else if (IS_GEN9_LP(i915)) {
+ bxt_display_core_uninit(i915);
+ bxt_enable_dc9(i915);
+ } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+ hsw_enable_pc8(i915);
+ }
+}
+
+void intel_display_power_resume(struct drm_i915_private *i915)
+{
+ if (!HAS_DISPLAY(i915))
+ return;
+
+ if (INTEL_GEN(i915) >= 11) {
+ bxt_disable_dc9(i915);
+ icl_display_core_init(i915, true);
+ if (i915->csr.dmc_payload) {
+ if (i915->csr.allowed_dc_mask &
+ DC_STATE_EN_UPTO_DC6)
+ skl_enable_dc6(i915);
+ else if (i915->csr.allowed_dc_mask &
+ DC_STATE_EN_UPTO_DC5)
+ gen9_enable_dc5(i915);
+ }
+ } else if (IS_GEN9_LP(i915)) {
+ bxt_disable_dc9(i915);
+ bxt_display_core_init(i915, true);
+ if (i915->csr.dmc_payload &&
+ (i915->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
+ gen9_enable_dc5(i915);
+ } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
+ hsw_disable_pc8(i915);
+ }
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
index e4d2c1ba24b0..97f2562fc5d3 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.h
+++ b/drivers/gpu/drm/i915/display/intel_display_power.h
@@ -232,27 +232,20 @@ struct i915_power_domains {
for_each_power_well_reverse(__dev_priv, __power_well) \
for_each_if((__power_well)->desc->domains & (__domain_mask))
-void skl_enable_dc6(struct drm_i915_private *dev_priv);
-void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
-void bxt_enable_dc9(struct drm_i915_private *dev_priv);
-void bxt_disable_dc9(struct drm_i915_private *dev_priv);
-void gen9_enable_dc5(struct drm_i915_private *dev_priv);
-
int intel_power_domains_init(struct drm_i915_private *dev_priv);
void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
void intel_power_domains_driver_remove(struct drm_i915_private *dev_priv);
-void icl_display_core_init(struct drm_i915_private *dev_priv, bool resume);
-void icl_display_core_uninit(struct drm_i915_private *dev_priv);
void intel_power_domains_enable(struct drm_i915_private *dev_priv);
void intel_power_domains_disable(struct drm_i915_private *dev_priv);
void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
enum i915_drm_suspend_mode);
void intel_power_domains_resume(struct drm_i915_private *dev_priv);
-void hsw_enable_pc8(struct drm_i915_private *dev_priv);
-void hsw_disable_pc8(struct drm_i915_private *dev_priv);
-void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
-void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
+
+void intel_display_power_suspend_late(struct drm_i915_private *i915);
+void intel_display_power_resume_early(struct drm_i915_private *i915);
+void intel_display_power_suspend(struct drm_i915_private *i915);
+void intel_display_power_resume(struct drm_i915_private *i915);
const char *
intel_display_power_domain_str(struct drm_i915_private *i915,
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 7c209743e478..ced61fc4bc3d 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -2166,7 +2166,7 @@ static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
struct drm_i915_private *dev_priv = to_i915(dev);
struct pci_dev *pdev = dev_priv->drm.pdev;
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
- int ret;
+ int ret = 0;
disable_rpm_wakeref_asserts(rpm);
@@ -2177,12 +2177,9 @@ static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
intel_power_domains_suspend(dev_priv,
get_suspend_mode(dev_priv, hibernation));
- ret = 0;
- if (INTEL_GEN(dev_priv) >= 11 || IS_GEN9_LP(dev_priv))
- bxt_enable_dc9(dev_priv);
- else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
- hsw_enable_pc8(dev_priv);
- else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+ intel_display_power_suspend_late(dev_priv);
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
ret = vlv_suspend_complete(dev_priv);
if (ret) {
@@ -2372,12 +2369,7 @@ static int i915_drm_resume_early(struct drm_device *dev)
intel_gt_check_and_clear_faults(&dev_priv->gt);
- if (INTEL_GEN(dev_priv) >= 11 || IS_GEN9_LP(dev_priv)) {
- gen9_sanitize_dc_state(dev_priv);
- bxt_disable_dc9(dev_priv);
- } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
- hsw_disable_pc8(dev_priv);
- }
+ intel_display_power_resume_early(dev_priv);
intel_sanitize_gt_powersave(dev_priv);
@@ -2921,7 +2913,7 @@ static int intel_runtime_suspend(struct device *kdev)
struct drm_device *dev = pci_get_drvdata(pdev);
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
- int ret;
+ int ret = 0;
if (WARN_ON_ONCE(!(dev_priv->gt_pm.rc6.enabled && HAS_RC6(dev_priv))))
return -ENODEV;
@@ -2945,16 +2937,9 @@ static int intel_runtime_suspend(struct device *kdev)
intel_uncore_suspend(&dev_priv->uncore);
- ret = 0;
- if (INTEL_GEN(dev_priv) >= 11) {
- icl_display_core_uninit(dev_priv);
- bxt_enable_dc9(dev_priv);
- } else if (IS_GEN9_LP(dev_priv)) {
- bxt_display_core_uninit(dev_priv);
- bxt_enable_dc9(dev_priv);
- } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
- hsw_enable_pc8(dev_priv);
- } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ intel_display_power_suspend(dev_priv);
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
ret = vlv_suspend_complete(dev_priv);
}
@@ -3035,26 +3020,9 @@ static int intel_runtime_resume(struct device *kdev)
if (intel_uncore_unclaimed_mmio(&dev_priv->uncore))
DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
- if (INTEL_GEN(dev_priv) >= 11) {
- bxt_disable_dc9(dev_priv);
- icl_display_core_init(dev_priv, true);
- if (dev_priv->csr.dmc_payload) {
- if (dev_priv->csr.allowed_dc_mask &
- DC_STATE_EN_UPTO_DC6)
- skl_enable_dc6(dev_priv);
- else if (dev_priv->csr.allowed_dc_mask &
- DC_STATE_EN_UPTO_DC5)
- gen9_enable_dc5(dev_priv);
- }
- } else if (IS_GEN9_LP(dev_priv)) {
- bxt_disable_dc9(dev_priv);
- bxt_display_core_init(dev_priv, true);
- if (dev_priv->csr.dmc_payload &&
- (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5))
- gen9_enable_dc5(dev_priv);
- } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
- hsw_disable_pc8(dev_priv);
- } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ intel_display_power_resume(dev_priv);
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
ret = vlv_resume_prepare(dev_priv, true);
}
--
2.20.1
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