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From: Anusha Srivatsa <anusha.srivatsa@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: [PATCH] drm/i915/icl: Enable DC9 as lowest possible state during screen-off
Date: Thu, 13 Sep 2018 12:31:09 -0700	[thread overview]
Message-ID: <20180913193109.31853-1-anusha.srivatsa@intel.com> (raw)

From: Animesh Manna <animesh.manna@intel.com>

ICL supports DC5, DC6, and DC9. Enable DC9 during screen-off, and enable
DC5/6 when appropriate.

v2: (James Ausmus)
 - Also handle ICL as GEN9_LP in i915_drm_suspend_late and
   i915_drm_suspend_early
 - Add DC9 to gen9_dc_mask for ICL
 - Re-order GEN checks for newest platform first
 - Use INTEL_GEN instead of INTEL_INFO->gen
 - Use INTEL_GEN >= 11 instead of IS_ICELAKE
 - Consolidate GEN checks

v3: (James Ausmus)
 - Also allow DC6 for ICL (Imre, Art)
 - Simplify !(GEN >= 11) to GEN < 11 (Imre)

v4: (James Ausmus)
 - Don't call intel_power_sequencer_reset after DC9 for Gen11+, as the
   PPS regs are Always On
 - Rebase against upstream changes

v5: (Anusha Srivatsa)
- rebased against the latest upstream changes.

Cc: Imre Deak <imre.deak@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c         | 20 ++++++++++++++---
 drivers/gpu/drm/i915/intel_drv.h        |  3 +++
 drivers/gpu/drm/i915/intel_runtime_pm.c | 29 +++++++++++++++----------
 3 files changed, 37 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 2ddf8538cb47..86a83e0a7ef2 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1855,7 +1855,7 @@ static int i915_drm_resume_early(struct drm_device *dev)
 
 	intel_uncore_resume_early(dev_priv);
 
-	if (IS_GEN9_LP(dev_priv)) {
+	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)) {
@@ -2622,7 +2622,10 @@ static int intel_runtime_suspend(struct device *kdev)
 	intel_uncore_suspend(dev_priv);
 
 	ret = 0;
-	if (IS_GEN9_LP(dev_priv)) {
+	if (IS_ICELAKE(dev_priv)) {
+		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)) {
@@ -2707,7 +2710,18 @@ static int intel_runtime_resume(struct device *kdev)
 	if (intel_uncore_unclaimed_mmio(dev_priv))
 		DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
 
-	if (IS_GEN9_LP(dev_priv)) {
+	if (IS_ICELAKE(dev_priv)) {
+		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 &&
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index bf1c38728a59..f0385fe5bb15 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1627,6 +1627,7 @@ 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);
 unsigned int skl_cdclk_get_vco(unsigned int freq);
+void skl_enable_dc6(struct drm_i915_private *dev_priv);
 void intel_dp_get_m_n(struct intel_crtc *crtc,
 		      struct intel_crtc_state *pipe_config);
 void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n);
@@ -1966,6 +1967,8 @@ int intel_power_domains_init(struct drm_i915_private *);
 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_fini_hw(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);
 
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 480dadb1047b..3e2c936217f8 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -551,7 +551,9 @@ static u32 gen9_dc_mask(struct drm_i915_private *dev_priv)
 	u32 mask;
 
 	mask = DC_STATE_EN_UPTO_DC5;
-	if (IS_GEN9_LP(dev_priv))
+	if (INTEL_GEN(dev_priv) >= 11)
+		mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9;
+	else if (IS_GEN9_LP(dev_priv))
 		mask |= DC_STATE_EN_DC9;
 	else
 		mask |= DC_STATE_EN_UPTO_DC6;
@@ -624,8 +626,8 @@ void bxt_enable_dc9(struct drm_i915_private *dev_priv)
 	assert_can_enable_dc9(dev_priv);
 
 	DRM_DEBUG_KMS("Enabling DC9\n");
-
-	intel_power_sequencer_reset(dev_priv);
+	if (INTEL_GEN(dev_priv) < 11)
+		intel_power_sequencer_reset(dev_priv);
 	gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9);
 }
 
@@ -707,7 +709,7 @@ static void assert_can_enable_dc6(struct drm_i915_private *dev_priv)
 	assert_csr_loaded(dev_priv);
 }
 
-static void skl_enable_dc6(struct drm_i915_private *dev_priv)
+void skl_enable_dc6(struct drm_i915_private *dev_priv)
 {
 	assert_can_enable_dc6(dev_priv);
 
@@ -2968,17 +2970,20 @@ static uint32_t get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
 	int requested_dc;
 	int max_dc;
 
-	if (IS_GEN9_BC(dev_priv) || INTEL_INFO(dev_priv)->gen >= 10) {
-		max_dc = 2;
-		mask = 0;
-	} else if (IS_GEN9_LP(dev_priv)) {
-		max_dc = 1;
+	if (INTEL_GEN(dev_priv) >= 11 || IS_GEN9_LP(dev_priv)) {
+		if (INTEL_GEN(dev_priv) >= 11)
+			max_dc = 2;
+		else
+			max_dc = 1;
 		/*
 		 * DC9 has a separate HW flow from the rest of the DC states,
 		 * not depending on the DMC firmware. It's needed by system
 		 * suspend/resume, so allow it unconditionally.
 		 */
 		mask = DC_STATE_EN_DC9;
+	} else if (IS_GEN10(dev_priv) || IS_GEN9_BC(dev_priv)) {
+		max_dc = 2;
+		mask = 0;
 	} else {
 		max_dc = 0;
 		mask = 0;
@@ -3513,8 +3518,8 @@ static void cnl_display_core_uninit(struct drm_i915_private *dev_priv)
 	I915_WRITE(CHICKEN_MISC_2, val);
 }
 
-static void icl_display_core_init(struct drm_i915_private *dev_priv,
-				  bool resume)
+void icl_display_core_init(struct drm_i915_private *dev_priv,
+			   bool resume)
 {
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
 	struct i915_power_well *well;
@@ -3565,7 +3570,7 @@ static void icl_display_core_init(struct drm_i915_private *dev_priv,
 	icl_mbus_init(dev_priv);
 }
 
-static void icl_display_core_uninit(struct drm_i915_private *dev_priv)
+void icl_display_core_uninit(struct drm_i915_private *dev_priv)
 {
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
 	struct i915_power_well *well;
-- 
2.17.1

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             reply	other threads:[~2018-09-13 19:36 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-13 19:31 Anusha Srivatsa [this message]
2018-09-13 20:13 ` [PATCH] drm/i915/icl: Enable DC9 as lowest possible state during screen-off Rodrigo Vivi
2018-09-17 18:45   ` Srivatsa, Anusha
2018-09-13 20:58 ` ✓ Fi.CI.BAT: success for drm/i915/icl: Enable DC9 as lowest possible state during screen-off (rev2) Patchwork
2018-09-13 23:45 ` ✓ Fi.CI.IGT: " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2018-10-29 22:14 [PATCH] drm/i915/icl: Enable DC9 as lowest possible state during screen-off Anusha Srivatsa
2018-10-30 17:56 ` Rodrigo Vivi
2018-10-24 23:01 Anusha Srivatsa
2018-10-24 23:22 ` Rodrigo Vivi
2018-10-23 18:32 Anusha Srivatsa
2018-10-23 18:44 ` Srivatsa, Anusha
2018-10-23 18:52 ` Rodrigo Vivi
2018-10-23 20:01   ` James Ausmus
2018-10-23 20:34     ` Rodrigo Vivi
2018-10-23 20:38       ` James Ausmus
2018-09-19 20:06 Anusha Srivatsa
2018-10-23 10:01 ` Yadav, Jyoti R
2018-09-10 19:10 Anusha Srivatsa

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