openwrt/target/linux/bcm27xx/patches-6.6/950-0588-drm-vc4-hvs-Use-switch-statement-to-simplify-enablin.patch

From 99399a38b0bae58af42d8f278f92440c593b0715 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Fri, 17 Feb 2023 15:07:29 +0100
Subject: [PATCH 0588/1085] drm/vc4: hvs: Use switch statement to simplify
 enabling/disabling irq

Since we'll support BCM2712 soon, let's move the logic to enable and
disable the end-of-frame interrupts to a switch to extend it more
easily.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hvs.c | 42 ++++++++++++++++++++++++++---------
 1 file changed, 32 insertions(+), 10 deletions(-)

--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -421,24 +421,46 @@ static void vc4_hvs_irq_enable_eof(const
 				   unsigned int channel)
 {
 	struct vc4_dev *vc4 = hvs->vc4;
-	u32 irq_mask = vc4->gen == VC4_GEN_5 ?
-		SCALER5_DISPCTRL_DSPEIEOF(channel) :
-		SCALER_DISPCTRL_DSPEIEOF(channel);
 
-	HVS_WRITE(SCALER_DISPCTRL,
-		  HVS_READ(SCALER_DISPCTRL) | irq_mask);
+	switch (vc4->gen) {
+	case VC4_GEN_4:
+		HVS_WRITE(SCALER_DISPCTRL,
+			  HVS_READ(SCALER_DISPCTRL) |
+			  SCALER_DISPCTRL_DSPEIEOF(channel));
+		break;
+
+	case VC4_GEN_5:
+		HVS_WRITE(SCALER_DISPCTRL,
+			  HVS_READ(SCALER_DISPCTRL) |
+			  SCALER5_DISPCTRL_DSPEIEOF(channel));
+		break;
+
+	default:
+		break;
+	}
 }
 
 static void vc4_hvs_irq_clear_eof(const struct vc4_hvs *hvs,
 				  unsigned int channel)
 {
 	struct vc4_dev *vc4 = hvs->vc4;
-	u32 irq_mask = vc4->gen == VC4_GEN_5 ?
-		SCALER5_DISPCTRL_DSPEIEOF(channel) :
-		SCALER_DISPCTRL_DSPEIEOF(channel);
 
-	HVS_WRITE(SCALER_DISPCTRL,
-		  HVS_READ(SCALER_DISPCTRL) & ~irq_mask);
+	switch (vc4->gen) {
+	case VC4_GEN_4:
+		HVS_WRITE(SCALER_DISPCTRL,
+			  HVS_READ(SCALER_DISPCTRL) &
+			  ~SCALER_DISPCTRL_DSPEIEOF(channel));
+		break;
+
+	case VC4_GEN_5:
+		HVS_WRITE(SCALER_DISPCTRL,
+			  HVS_READ(SCALER_DISPCTRL) &
+			  ~SCALER5_DISPCTRL_DSPEIEOF(channel));
+		break;
+
+	default:
+		break;
+	}
 }
 
 static struct vc4_hvs_dlist_allocation *