drm/i915: Remove per-platform IIR HPD masking

We no longer unmask all HPD irqs, so we can drop the ugly per-platform
HPD IIR masking. IMR will prevent unsupported bits from appearing in
IIR.

v2: Deal with DG1
    Include "HOTPLUG" in the mask names (Lucas)
v3: Fix typos in subject
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201028213323.5423-17-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/i915_irq.c

@@ -1895,30 +1895,10 @@ static void cpt_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
 
 static void icp_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
 {
-	u32 ddi_hotplug_trigger, tc_hotplug_trigger;
+	u32 ddi_hotplug_trigger = pch_iir & SDE_DDI_HOTPLUG_MASK_ICP;
+	u32 tc_hotplug_trigger = pch_iir & SDE_TC_HOTPLUG_MASK_ICP;
 	u32 pin_mask = 0, long_mask = 0;
 
-	if (HAS_PCH_DG1(dev_priv)) {
-		ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_DG1;
-		tc_hotplug_trigger = 0;
-	} else if (HAS_PCH_TGP(dev_priv)) {
-		ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_TGP;
-		tc_hotplug_trigger = pch_iir & SDE_TC_MASK_TGP;
-	} else if (HAS_PCH_JSP(dev_priv)) {
-		ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_TGP;
-		tc_hotplug_trigger = 0;
-	} else if (HAS_PCH_MCC(dev_priv)) {
-		ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_ICP;
-		tc_hotplug_trigger = pch_iir & SDE_TC_HOTPLUG_ICP(HPD_PORT_TC1);
-	} else {
-		drm_WARN(&dev_priv->drm, !HAS_PCH_ICP(dev_priv),
-			 "Unrecognized PCH type 0x%x\n",
-			 INTEL_PCH_TYPE(dev_priv));
-
-		ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_ICP;
-		tc_hotplug_trigger = pch_iir & SDE_TC_MASK_ICP;
-	}
-
 	if (ddi_hotplug_trigger) {
 		u32 dig_hotplug_reg;
 

drivers/gpu/drm/i915/i915_reg.h

@@ -8352,25 +8352,16 @@ enum {
 #define SDE_GMBUS_ICP			(1 << 23)
 #define SDE_TC_HOTPLUG_ICP(hpd_pin)	REG_BIT(24 + _HPD_PIN_TC(hpd_pin))
 #define SDE_DDI_HOTPLUG_ICP(hpd_pin)	REG_BIT(16 + _HPD_PIN_DDI(hpd_pin))
-#define SDE_DDI_MASK_ICP		(SDE_DDI_HOTPLUG_ICP(HPD_PORT_B) | \
-					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_A))
-#define SDE_TC_MASK_ICP			(SDE_TC_HOTPLUG_ICP(HPD_PORT_TC4) | \
-					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC3) | \
-					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC2) | \
-					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC1))
-#define SDE_DDI_MASK_TGP		(SDE_DDI_HOTPLUG_ICP(HPD_PORT_C) | \
+#define SDE_DDI_HOTPLUG_MASK_ICP	(SDE_DDI_HOTPLUG_ICP(HPD_PORT_D) | \
+					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_C) | \
 					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_B) | \
 					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_A))
-#define SDE_TC_MASK_TGP			(SDE_TC_HOTPLUG_ICP(HPD_PORT_TC6) | \
+#define SDE_TC_HOTPLUG_MASK_ICP		(SDE_TC_HOTPLUG_ICP(HPD_PORT_TC6) | \
 					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC5) | \
 					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC4) | \
 					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC3) | \
 					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC2) | \
 					 SDE_TC_HOTPLUG_ICP(HPD_PORT_TC1))
-#define SDE_DDI_MASK_DG1		(SDE_DDI_HOTPLUG_ICP(HPD_PORT_D) | \
-					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_C) | \
-					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_B) | \
-					 SDE_DDI_HOTPLUG_ICP(HPD_PORT_A))
 
 #define SDEISR  _MMIO(0xc4000)
 #define SDEIMR  _MMIO(0xc4004)