linux-kernel - [PATCH] clocksource/drivers/timer-ti-dm: Use of_address_to

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Date:   Sun, 19 Mar 2023 11:32:20 -0500
From:   Rob Herring <robh@...nel.org>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] clocksource/drivers/timer-ti-dm: Use of_address_to_resource()

Replace of_get_address() and of_translate_address() calls with single
call to of_address_to_resource().

Signed-off-by: Rob Herring <robh@...nel.org>
---
 drivers/clocksource/timer-ti-dm-systimer.c | 57 ++++++++++------------
 1 file changed, 27 insertions(+), 30 deletions(-)

diff --git a/drivers/clocksource/timer-ti-dm-systimer.c b/drivers/clocksource/timer-ti-dm-systimer.c
index 632523c1232f..3b98a3c04f87 100644
--- a/drivers/clocksource/timer-ti-dm-systimer.c
+++ b/drivers/clocksource/timer-ti-dm-systimer.c
@@ -251,24 +251,22 @@ static void __init dmtimer_systimer_assign_alwon(void)
 		counter_32k = -ENODEV;
 
 	for_each_matching_node(np, dmtimer_match_table) {
+		struct resource res;
 		if (!dmtimer_is_preferred(np))
 			continue;
 
-		if (of_property_read_bool(np, "ti,timer-alwon")) {
-			const __be32 *addr;
-
-			addr = of_get_address(np, 0, NULL, NULL);
-			pa = of_translate_address(np, addr);
-			if (pa) {
-				/* Quirky omap3 boards must use dmtimer12 */
-				if (quirk_unreliable_oscillator &&
-				    pa == 0x48318000)
-					continue;
-
-				of_node_put(np);
-				break;
-			}
-		}
+		if (!of_property_read_bool(np, "ti,timer-alwon"))
+			continue;
+
+		if (of_address_to_resource(np, 0, &res))
+			continue;
+
+		/* Quirky omap3 boards must use dmtimer12 */
+		if (quirk_unreliable_oscillator && res.start == 0x48318000)
+			continue;
+
+		of_node_put(np);
+		break;
 	}
 
 	/* Usually no need for dmtimer clocksource if we have counter32 */
@@ -285,24 +283,22 @@ static void __init dmtimer_systimer_assign_alwon(void)
 static u32 __init dmtimer_systimer_find_first_available(void)
 {
 	struct device_node *np;
-	const __be32 *addr;
 	u32 pa = 0;
 
 	for_each_matching_node(np, dmtimer_match_table) {
+		struct resource res;
 		if (!dmtimer_is_preferred(np))
 			continue;
 
-		addr = of_get_address(np, 0, NULL, NULL);
-		pa = of_translate_address(np, addr);
-		if (pa) {
-			if (pa == clocksource || pa == clockevent) {
-				pa = 0;
-				continue;
-			}
-
-			of_node_put(np);
-			break;
-		}
+		if (of_address_to_resource(np, 0, &res))
+			continue;
+
+		if (res.start == clocksource || res.start == clockevent)
+			continue;
+
+		pa = res.start;
+		of_node_put(np);
+		break;
 	}
 
 	return pa;
@@ -812,7 +808,7 @@ static int __init dmtimer_clocksource_init(struct device_node *np)
  */
 static int __init dmtimer_systimer_init(struct device_node *np)
 {
-	const __be32 *addr;
+	struct resource res;
 	u32 pa;
 
 	/* One time init for the preferred timer configuration */
@@ -826,8 +822,9 @@ static int __init dmtimer_systimer_init(struct device_node *np)
 		return -EINVAL;
 	}
 
-	addr = of_get_address(np, 0, NULL, NULL);
-	pa = of_translate_address(np, addr);
+
+	of_address_to_resource(np, 0, &res);
+	pa = (u32)res.start;
 	if (!pa)
 		return -EINVAL;
 
-- 
2.39.2