ARM: OMAP4+: PRM: get rid of cpu_is_omap44xx calls from interrupt init

The compatible DT node is now passed with the prm init, so there is no
need to do node matching here again. Added a new flag to the init data
also, to detect default IRQ support for OMAP4. Also, any booting omap4
DT setup always has a PRM node, so there is no need to check against
the special case where it would be missing.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm/mach-omap2/prm.h

@@ -29,9 +29,11 @@ int omap2_prcm_base_init(void);
  *
  * PRM_HAS_IO_WAKEUP: has IO wakeup capability
  * PRM_HAS_VOLTAGE: has voltage domains
+ * PRM_IRQ_DEFAULT: use default irq number for PRM irq
  */
-#define PRM_HAS_IO_WAKEUP	(1 << 0)
-#define PRM_HAS_VOLTAGE		(1 << 1)
+#define PRM_HAS_IO_WAKEUP	BIT(0)
+#define PRM_HAS_VOLTAGE		BIT(1)
+#define PRM_IRQ_DEFAULT		BIT(2)
 
 /*
  * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP

arch/arm/mach-omap2/prm44xx.c

@@ -703,10 +703,14 @@ static struct prm_ll_data omap44xx_prm_ll_data = {
 	.vp_clear_txdone	= omap4_prm_vp_clear_txdone,
 };
 
+static const struct omap_prcm_init_data *prm_init_data;
+
 int __init omap44xx_prm_init(const struct omap_prcm_init_data *data)
 {
 	omap_prm_base_init();
 
+	prm_init_data = data;
+
 	if (data->flags & PRM_HAS_IO_WAKEUP)
 		prm_features |= PRM_HAS_IO_WAKEUP;
 
@@ -718,16 +722,8 @@ int __init omap44xx_prm_init(const struct omap_prcm_init_data *data)
 	return prm_register(&omap44xx_prm_ll_data);
 }
 
-static const struct of_device_id omap_prm_dt_match_table[] = {
-	{ .compatible = "ti,omap4-prm" },
-	{ .compatible = "ti,omap5-prm" },
-	{ .compatible = "ti,dra7-prm" },
-	{ }
-};
-
 static int omap44xx_prm_late_init(void)
 {
-	struct device_node *np;
 	int irq_num;
 
 	if (!(prm_features & PRM_HAS_IO_WAKEUP))
@@ -737,31 +733,23 @@ static int omap44xx_prm_late_init(void)
 	if (!of_have_populated_dt())
 		return 0;
 
-	np = of_find_matching_node(NULL, omap_prm_dt_match_table);
-
-	if (!np) {
-		/* Default loaded up with OMAP4 values */
-		if (!cpu_is_omap44xx())
-			return 0;
-	} else {
-		irq_num = of_irq_get(np, 0);
-		/*
-		 * Already have OMAP4 IRQ num. For all other platforms, we need
-		 * IRQ numbers from DT
-		 */
-		if (irq_num < 0 && !cpu_is_omap44xx()) {
-			if (irq_num == -EPROBE_DEFER)
-				return irq_num;
-
-			/* Have nothing to do */
-			return 0;
-		}
-
-		/* Once OMAP4 DT is filled as well */
-		if (irq_num >= 0) {
-			omap4_prcm_irq_setup.irq = irq_num;
-			omap4_prcm_irq_setup.xlate_irq = NULL;
-		}
+	irq_num = of_irq_get(prm_init_data->np, 0);
+	/*
+	 * Already have OMAP4 IRQ num. For all other platforms, we need
+	 * IRQ numbers from DT
+	 */
+	if (irq_num < 0 && !(prm_init_data->flags & PRM_IRQ_DEFAULT)) {
+		if (irq_num == -EPROBE_DEFER)
+			return irq_num;
+
+		/* Have nothing to do */
+		return 0;
+	}
+
+	/* Once OMAP4 DT is filled as well */
+	if (irq_num >= 0) {
+		omap4_prcm_irq_setup.irq = irq_num;
+		omap4_prcm_irq_setup.xlate_irq = NULL;
 	}
 
 	omap44xx_prm_enable_io_wakeup();

arch/arm/mach-omap2/prm_common.c

@@ -669,7 +669,7 @@ static struct omap_prcm_init_data omap4_prm_data __initdata = {
 	.index = TI_CLKM_PRM,
 	.init = omap44xx_prm_init,
 	.device_inst_offset = OMAP4430_PRM_DEVICE_INST,
-	.flags = PRM_HAS_IO_WAKEUP | PRM_HAS_VOLTAGE,
+	.flags = PRM_HAS_IO_WAKEUP | PRM_HAS_VOLTAGE | PRM_IRQ_DEFAULT,
 };
 #endif