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From: Imre Deak <imre.deak@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Subject: [Intel-gfx] [PATCH 4/9] drm/i915/ddi: Track power reference taken for encoder DDI IO use
Date: Mon, 30 Nov 2020 23:21:55 +0200	[thread overview]
Message-ID: <20201130212200.2811939-5-imre.deak@intel.com> (raw)
In-Reply-To: <20201130212200.2811939-1-imre.deak@intel.com>

Add wakeref tracking for the DDI encoders' DDI_IO display power domain
references.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c      | 38 ++++++++++++-------
 .../drm/i915/display/intel_display_types.h    |  1 +
 2 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 92940a0c5ef8..9518d298b0f7 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2285,9 +2285,11 @@ static void intel_ddi_get_power_domains(struct intel_encoder *encoder,
 	dig_port = enc_to_dig_port(encoder);
 
 	if (!intel_phy_is_tc(dev_priv, phy) ||
-	    dig_port->tc_mode != TC_PORT_TBT_ALT)
-		intel_display_power_get(dev_priv,
-					dig_port->ddi_io_power_domain);
+	    dig_port->tc_mode != TC_PORT_TBT_ALT) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+	}
 
 	/*
 	 * AUX power is only needed for (e)DP mode, and for HDMI mode on TC
@@ -3577,9 +3579,11 @@ static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
 
 	/* 5. If IO power is controlled through PWR_WELL_CTL, Enable IO Power */
 	if (!intel_phy_is_tc(dev_priv, phy) ||
-	    dig_port->tc_mode != TC_PORT_TBT_ALT)
-		intel_display_power_get(dev_priv,
-					dig_port->ddi_io_power_domain);
+	    dig_port->tc_mode != TC_PORT_TBT_ALT) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+	}
 
 	/* 6. Program DP_MODE */
 	icl_program_mg_dp_mode(dig_port, crtc_state);
@@ -3698,9 +3702,11 @@ static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state,
 	intel_ddi_clk_select(encoder, crtc_state);
 
 	if (!intel_phy_is_tc(dev_priv, phy) ||
-	    dig_port->tc_mode != TC_PORT_TBT_ALT)
-		intel_display_power_get(dev_priv,
-					dig_port->ddi_io_power_domain);
+	    dig_port->tc_mode != TC_PORT_TBT_ALT) {
+		drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+		dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+								   dig_port->ddi_io_power_domain);
+	}
 
 	icl_program_mg_dp_mode(dig_port, crtc_state);
 
@@ -3778,7 +3784,9 @@ static void intel_ddi_pre_enable_hdmi(struct intel_atomic_state *state,
 	intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
 	intel_ddi_clk_select(encoder, crtc_state);
 
-	intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain);
+	drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
+	dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
+							   dig_port->ddi_io_power_domain);
 
 	icl_program_mg_dp_mode(dig_port, crtc_state);
 
@@ -3936,8 +3944,9 @@ static void intel_ddi_post_disable_dp(struct intel_atomic_state *state,
 
 	if (!intel_phy_is_tc(dev_priv, phy) ||
 	    dig_port->tc_mode != TC_PORT_TBT_ALT)
-		intel_display_power_put_unchecked(dev_priv,
-						  dig_port->ddi_io_power_domain);
+		intel_display_power_put(dev_priv,
+					dig_port->ddi_io_power_domain,
+					fetch_and_zero(&dig_port->ddi_io_wakeref));
 
 	intel_ddi_clk_disable(encoder);
 }
@@ -3958,8 +3967,9 @@ static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state,
 
 	intel_disable_ddi_buf(encoder, old_crtc_state);
 
-	intel_display_power_put_unchecked(dev_priv,
-					  dig_port->ddi_io_power_domain);
+	intel_display_power_put(dev_priv,
+				dig_port->ddi_io_power_domain,
+				fetch_and_zero(&dig_port->ddi_io_wakeref));
 
 	intel_ddi_clk_disable(encoder);
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 2dcda480b714..91ed5c445150 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1466,6 +1466,7 @@ struct intel_digital_port {
 	/* Used for DP and ICL+ TypeC/DP and TypeC/HDMI ports. */
 	enum aux_ch aux_ch;
 	enum intel_display_power_domain ddi_io_power_domain;
+	intel_wakeref_t ddi_io_wakeref;
 	struct mutex tc_lock;	/* protects the TypeC port mode */
 	intel_wakeref_t tc_lock_wakeref;
 	int tc_link_refcount;
-- 
2.25.1

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  parent reply	other threads:[~2020-11-30 21:22 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-30 21:21 [Intel-gfx] [PATCH 0/9] drm/i915: Add the missing wakeref tracking for display power references Imre Deak
2020-11-30 21:21 ` [Intel-gfx] [PATCH 1/9] drm/i915: Use CRTC index consistently during getting/putting CRTC power domains Imre Deak
2020-11-30 21:50   ` Chris Wilson
2020-11-30 21:21 ` [Intel-gfx] [PATCH 2/9] drm/i915: Factor out helpers to get/put a set of tracked " Imre Deak
2020-11-30 21:48   ` Chris Wilson
2020-12-01 16:13   ` [Intel-gfx] [PATCH v2 " Imre Deak
2020-11-30 21:21 ` [Intel-gfx] [PATCH 3/9] drm/i915: Track power references taken for enabled CRTCs Imre Deak
2020-11-30 21:57   ` Chris Wilson
2020-11-30 21:21 ` Imre Deak [this message]
2020-11-30 22:00   ` [Intel-gfx] [PATCH 4/9] drm/i915/ddi: Track power reference taken for encoder DDI IO use Chris Wilson
2020-11-30 22:07     ` Imre Deak
2020-11-30 23:39       ` Imre Deak
2020-12-01 11:08         ` Chris Wilson
2020-11-30 21:21 ` [Intel-gfx] [PATCH 5/9] drm/i915/ddi: Track power reference taken for encoder main lane AUX use Imre Deak
2020-11-30 21:21 ` [Intel-gfx] [PATCH 6/9] drm/i915: Track power reference taken for eDP VDD Imre Deak
2020-11-30 21:21 ` [Intel-gfx] [PATCH 7/9] drm/i915: Rename power_domains.wakeref to init_wakeref Imre Deak
2020-11-30 22:01   ` Chris Wilson
2020-11-30 21:21 ` [Intel-gfx] [PATCH 8/9] drm/i915: Track power reference taken to disable power well functionality Imre Deak
2020-12-01 16:13   ` [Intel-gfx] [PATCH v2 " Imre Deak
2020-11-30 21:22 ` [Intel-gfx] [PATCH 9/9] drm/i915: Make intel_display_power_put_unchecked() an internal-only function Imre Deak
2020-11-30 22:07   ` Chris Wilson
2020-11-30 22:47     ` Imre Deak
2020-12-01  8:14       ` Chris Wilson
2020-12-01 10:52         ` Imre Deak
2020-12-01 11:13           ` Chris Wilson
2020-12-01 11:32             ` Imre Deak
2020-12-01  2:17 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add the missing wakeref tracking for display power references Patchwork
2020-12-01  2:48 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-12-01 15:42 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2020-12-01 18:54 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add the missing wakeref tracking for display power references (rev3) Patchwork
2020-12-01 19:25 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-12-02 15:33 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add the missing wakeref tracking for display power references (rev4) Patchwork
2020-12-02 19:57 ` [Intel-gfx] ✓ Fi.CI.IGT: success " Patchwork
2020-12-03 10:44 ` [Intel-gfx] ✓ Fi.CI.IGT: success for drm/i915: Add the missing wakeref tracking for display power references (rev3) Patchwork
2020-12-03 13:41   ` Imre Deak

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