[Intel-gfx] [PATCH v2 08/17] drm/i915/pps: abstract intel_pps_encoder_reset()

[Jani Nikula]

Add an "encoder reset" call to hide some more pps functions, and clean
up the callers. A minor functional change is not holding the pps lock
across the whole operation in intel_dp_encoder_reset, but instead doing
it in two steps.

v2: rename intel_pps_reinit to intel_pps_encoder_reset for clarity

Reviewed-by: Anshuman Gupta <anshuman.gupta at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c  | 20 +++++---------------
 drivers/gpu/drm/i915/display/intel_pps.c | 21 +++++++++++++++++++--
 drivers/gpu/drm/i915/display/intel_pps.h |  3 +--
 3 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 31c5474f85d6..cfaadeaf9f00 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -6299,30 +6299,20 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
-	intel_wakeref_t wakeref;
 
 	if (!HAS_DDI(dev_priv))
 		intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
 
 	intel_dp->reset_link_params = true;
 
-	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
-	    !intel_dp_is_edp(intel_dp))
-		return;
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		intel_wakeref_t wakeref;
 
-	with_intel_pps_lock(intel_dp, wakeref) {
-		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		with_intel_pps_lock(intel_dp, wakeref)
 			intel_dp->active_pipe = vlv_active_pipe(intel_dp);
-
-		if (intel_dp_is_edp(intel_dp)) {
-			/*
-			 * Reinit the power sequencer, in case BIOS did
-			 * something nasty with it.
-			 */
-			intel_dp_pps_init(intel_dp);
-			intel_pps_vdd_sanitize(intel_dp);
-		}
 	}
+
+	intel_pps_encoder_reset(intel_dp);
 }
 
 static int intel_modeset_tile_group(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
index 799190fafa4f..3b962be4f4c0 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.c
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -1040,7 +1040,7 @@ void vlv_init_panel_power_sequencer(struct intel_encoder *encoder,
 	intel_dp_init_panel_power_sequencer_registers(intel_dp, true);
 }
 
-void intel_pps_vdd_sanitize(struct intel_dp *intel_dp)
+static void intel_pps_vdd_sanitize(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
@@ -1337,7 +1337,7 @@ intel_dp_init_panel_power_sequencer_registers(struct intel_dp *intel_dp,
 		    (intel_de_read(dev_priv, regs.pp_ctrl) & BXT_POWER_CYCLE_DELAY_MASK));
 }
 
-void intel_dp_pps_init(struct intel_dp *intel_dp)
+static void intel_dp_pps_init(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
@@ -1349,6 +1349,23 @@ void intel_dp_pps_init(struct intel_dp *intel_dp)
 	}
 }
 
+void intel_pps_encoder_reset(struct intel_dp *intel_dp)
+{
+	intel_wakeref_t wakeref;
+
+	if (!intel_dp_is_edp(intel_dp))
+		return;
+
+	with_intel_pps_lock(intel_dp, wakeref) {
+		/*
+		 * Reinit the power sequencer, in case BIOS did something nasty
+		 * with it.
+		 */
+		intel_dp_pps_init(intel_dp);
+		intel_pps_vdd_sanitize(intel_dp);
+	}
+}
+
 void intel_pps_init(struct intel_dp *intel_dp)
 {
 	intel_wakeref_t wakeref;
diff --git a/drivers/gpu/drm/i915/display/intel_pps.h b/drivers/gpu/drm/i915/display/intel_pps.h
index 53c0fafd1440..7c3b5ea4f47b 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.h
+++ b/drivers/gpu/drm/i915/display/intel_pps.h
@@ -32,7 +32,6 @@ void intel_pps_vdd_off_unlocked(struct intel_dp *intel_dp, bool sync);
 void intel_pps_on_unlocked(struct intel_dp *intel_dp);
 void intel_pps_off_unlocked(struct intel_dp *intel_dp);
 
-void intel_pps_vdd_sanitize(struct intel_dp *intel_dp);
 void intel_pps_vdd_on(struct intel_dp *intel_dp);
 void intel_pps_on(struct intel_dp *intel_dp);
 void intel_pps_off(struct intel_dp *intel_dp);
@@ -42,7 +41,7 @@ bool intel_pps_have_power(struct intel_dp *intel_dp);
 void wait_panel_power_cycle(struct intel_dp *intel_dp);
 
 void intel_pps_init(struct intel_dp *intel_dp);
-void intel_dp_pps_init(struct intel_dp *intel_dp);
+void intel_pps_encoder_reset(struct intel_dp *intel_dp);
 void intel_power_sequencer_reset(struct drm_i915_private *i915);
 
 void vlv_init_panel_power_sequencer(struct intel_encoder *encoder,
-- 
2.20.1