[PATCH 1/3] drm/i915/psr: add LATENCY_REPORTING_REMOVED() register bit helper

[Jani Nikula]

Drop the wa_16013835468_bit_get() function in favour of the register
macro. It doesn't have to be so complicated, and we don't have to use
the workaround name in everything that's related to it.

Cc: Jouni Högander <jouni.hogander at intel.com>
Cc: Suraj Kandpal <suraj.kandpal at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 24 ++++--------------------
 drivers/gpu/drm/i915/i915_reg.h          | 13 +++++++++----
 2 files changed, 13 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 880ea845207f..e018a0868009 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1773,23 +1773,6 @@ static void intel_psr_activate(struct intel_dp *intel_dp)
 	intel_dp->psr.active = true;
 }
 
-static u32 wa_16013835468_bit_get(struct intel_dp *intel_dp)
-{
-	switch (intel_dp->psr.pipe) {
-	case PIPE_A:
-		return LATENCY_REPORTING_REMOVED_PIPE_A;
-	case PIPE_B:
-		return LATENCY_REPORTING_REMOVED_PIPE_B;
-	case PIPE_C:
-		return LATENCY_REPORTING_REMOVED_PIPE_C;
-	case PIPE_D:
-		return LATENCY_REPORTING_REMOVED_PIPE_D;
-	default:
-		MISSING_CASE(intel_dp->psr.pipe);
-		return 0;
-	}
-}
-
 /*
  * Wa_16013835468
  * Wa_14015648006
@@ -1798,6 +1781,7 @@ static void wm_optimization_wa(struct intel_dp *intel_dp,
 			       const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(intel_dp);
+	enum pipe pipe = intel_dp->psr.pipe;
 	bool set_wa_bit = false;
 
 	/* Wa_14015648006 */
@@ -1811,10 +1795,10 @@ static void wm_optimization_wa(struct intel_dp *intel_dp,
 
 	if (set_wa_bit)
 		intel_de_rmw(display, GEN8_CHICKEN_DCPR_1,
-			     0, wa_16013835468_bit_get(intel_dp));
+			     0, LATENCY_REPORTING_REMOVED(pipe));
 	else
 		intel_de_rmw(display, GEN8_CHICKEN_DCPR_1,
-			     wa_16013835468_bit_get(intel_dp), 0);
+			     LATENCY_REPORTING_REMOVED(pipe), 0);
 }
 
 static void intel_psr_enable_source(struct intel_dp *intel_dp,
@@ -2105,7 +2089,7 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
 	 */
 	if (DISPLAY_VER(display) >= 11)
 		intel_de_rmw(display, GEN8_CHICKEN_DCPR_1,
-			     wa_16013835468_bit_get(intel_dp), 0);
+			     LATENCY_REPORTING_REMOVED(intel_dp->psr.pipe), 0);
 
 	if (intel_dp->psr.sel_update_enabled) {
 		/* Wa_16012604467:adlp,mtl[a0,b0] */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 405f409e9761..a51dab9c4978 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2861,11 +2861,16 @@
 #define  RESET_PCH_HANDSHAKE_ENABLE	REG_BIT(4)
 
 #define GEN8_CHICKEN_DCPR_1			_MMIO(0x46430)
-#define   LATENCY_REPORTING_REMOVED_PIPE_D	REG_BIT(31)
+#define   _LATENCY_REPORTING_REMOVED_PIPE_D	REG_BIT(31)
 #define   SKL_SELECT_ALTERNATE_DC_EXIT		REG_BIT(30)
-#define   LATENCY_REPORTING_REMOVED_PIPE_C	REG_BIT(25)
-#define   LATENCY_REPORTING_REMOVED_PIPE_B	REG_BIT(24)
-#define   LATENCY_REPORTING_REMOVED_PIPE_A	REG_BIT(23)
+#define   _LATENCY_REPORTING_REMOVED_PIPE_C	REG_BIT(25)
+#define   _LATENCY_REPORTING_REMOVED_PIPE_B	REG_BIT(24)
+#define   _LATENCY_REPORTING_REMOVED_PIPE_A	REG_BIT(23)
+#define   LATENCY_REPORTING_REMOVED(pipe)	_PICK((pipe), \
+						      _LATENCY_REPORTING_REMOVED_PIPE_A, \
+						      _LATENCY_REPORTING_REMOVED_PIPE_B, \
+						      _LATENCY_REPORTING_REMOVED_PIPE_C, \
+						      _LATENCY_REPORTING_REMOVED_PIPE_D)
 #define   ICL_DELAY_PMRSP			REG_BIT(22)
 #define   DISABLE_FLR_SRC			REG_BIT(15)
 #define   MASK_WAKEMEM				REG_BIT(13)
-- 
2.39.5