[Intel-gfx] [PATCH 1/2] drm/i915/pps: Add get_pps_idx() hook as part of pps_get_register() cleanup

[Animesh Manna <animesh.manna@intel.com>]

Simplified pps_get_register() which use get_pps_idx() hook to derive the
pps instance and get_pps_idx() will be initialized at pps_init().

v1: Initial version. Got r-b from Jani.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
---
 .../gpu/drm/i915/display/intel_display_types.h    |  1 +
 drivers/gpu/drm/i915/display/intel_pps.c          | 15 ++++++++++-----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index e2b853e9e51d..44ab296c1f04 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1694,6 +1694,7 @@ struct intel_dp {
 	u8 (*preemph_max)(struct intel_dp *intel_dp);
 	u8 (*voltage_max)(struct intel_dp *intel_dp,
 			  const struct intel_crtc_state *crtc_state);
+	int (*get_pps_idx)(struct intel_dp *intel_dp);
 
 	/* Displayport compliance testing */
 	struct intel_dp_compliance compliance;
diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
index 21944f5bf3a8..b972fa6ec00d 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.c
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -364,12 +364,10 @@ static void intel_pps_get_registers(struct intel_dp *intel_dp,
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	int pps_idx = 0;
 
-	memset(regs, 0, sizeof(*regs));
+	if (intel_dp->get_pps_idx)
+		pps_idx = intel_dp->get_pps_idx(intel_dp);
 
-	if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
-		pps_idx = bxt_power_sequencer_idx(intel_dp);
-	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
-		pps_idx = vlv_power_sequencer_pipe(intel_dp);
+	memset(regs, 0, sizeof(*regs));
 
 	regs->pp_ctrl = PP_CONTROL(pps_idx);
 	regs->pp_stat = PP_STATUS(pps_idx);
@@ -1432,6 +1430,13 @@ void intel_pps_init(struct intel_dp *intel_dp)
 	intel_dp->pps.initializing = true;
 	INIT_DELAYED_WORK(&intel_dp->pps.panel_vdd_work, edp_panel_vdd_work);
 
+	if (IS_GEMINILAKE(i915) || IS_BROXTON(i915))
+		intel_dp->get_pps_idx = bxt_power_sequencer_idx;
+	else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+		intel_dp->get_pps_idx = vlv_power_sequencer_pipe;
+	else
+		intel_dp->get_pps_idx = NULL;
+
 	pps_init_timestamps(intel_dp);
 
 	with_intel_pps_lock(intel_dp, wakeref) {
-- 
2.29.0