[PATCH v3 8/9] drm/i915/pps: add vlv_pps_backlight_initial_pipe()

[Jani Nikula]

Add vlv_pps_backlight_initial_pipe() and move the VLV/CHV initial
backlight pipe logic there, hiding the PPS pipe details inside PPS code.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c  | 16 ++--------------
 drivers/gpu/drm/i915/display/intel_pps.c | 20 ++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_pps.h |  1 +
 3 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 12706f24a36d..9859a7d3ce80 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -6629,20 +6629,8 @@ static void intel_edp_backlight_setup(struct intel_dp *intel_dp,
 	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
 	enum pipe pipe = INVALID_PIPE;
 
-	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
-		/*
-		 * Figure out the current pipe for the initial backlight setup.
-		 * If the current pipe isn't valid, try the PPS pipe, and if that
-		 * fails just assume pipe A.
-		 */
-		pipe = vlv_active_pipe(intel_dp);
-
-		if (pipe != PIPE_A && pipe != PIPE_B)
-			pipe = intel_dp->pps.vlv_pps_pipe;
-
-		if (pipe != PIPE_A && pipe != PIPE_B)
-			pipe = PIPE_A;
-	}
+	if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+		pipe = vlv_pps_backlight_initial_pipe(intel_dp);
 
 	intel_backlight_setup(connector, pipe);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
index 63bae4c3a71a..9cb091e7c94a 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.c
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -1227,6 +1227,26 @@ void vlv_pps_pipe_reset(struct intel_dp *intel_dp)
 		intel_dp->pps.vlv_active_pipe = vlv_active_pipe(intel_dp);
 }
 
+enum pipe vlv_pps_backlight_initial_pipe(struct intel_dp *intel_dp)
+{
+	enum pipe pipe;
+
+	/*
+	 * Figure out the current pipe for the initial backlight setup. If the
+	 * current pipe isn't valid, try the PPS pipe, and if that fails just
+	 * assume pipe A.
+	 */
+	pipe = vlv_active_pipe(intel_dp);
+
+	if (pipe != PIPE_A && pipe != PIPE_B)
+		pipe = intel_dp->pps.vlv_pps_pipe;
+
+	if (pipe != PIPE_A && pipe != PIPE_B)
+		pipe = PIPE_A;
+
+	return pipe;
+}
+
 /* Call on all DP, not just eDP */
 void vlv_pps_port_enable_unlocked(struct intel_encoder *encoder,
 				  const struct intel_crtc_state *crtc_state)
diff --git a/drivers/gpu/drm/i915/display/intel_pps.h b/drivers/gpu/drm/i915/display/intel_pps.h
index 5b3eb7fb7e1f..a5339a65485d 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.h
+++ b/drivers/gpu/drm/i915/display/intel_pps.h
@@ -47,6 +47,7 @@ void intel_pps_reset_all(struct intel_display *display);
 
 void vlv_pps_pipe_init(struct intel_dp *intel_dp);
 void vlv_pps_pipe_reset(struct intel_dp *intel_dp);
+enum pipe vlv_pps_backlight_initial_pipe(struct intel_dp *intel_dp);
 void vlv_pps_port_enable_unlocked(struct intel_encoder *encoder,
 				  const struct intel_crtc_state *crtc_state);
 void vlv_pps_port_disable(struct intel_encoder *encoder,
-- 
2.39.2