linux-kernel - [PATCH 3/3] power: reset: syscon-poweroff: get regmap from parent node

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Message-Id: <20230901120057.47018-3-krzysztof.kozlowski@linaro.org>
Date:   Fri,  1 Sep 2023 14:00:57 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 3/3] power: reset: syscon-poweroff: get regmap from parent node

Just like syscon-reboot device, the syscon-poweroff is supposed to be a
child of syscon node, thus we can take the same approach as
syscon-poweroff: deprecate the 'regmap' field in favor of taking it from
the parent's node.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/power/reset/syscon-poweroff.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/power/reset/syscon-poweroff.c b/drivers/power/reset/syscon-poweroff.c
index 11b955983279..764aeea6c34a 100644
--- a/drivers/power/reset/syscon-poweroff.c
+++ b/drivers/power/reset/syscon-poweroff.c
@@ -37,8 +37,11 @@ static int syscon_poweroff_probe(struct platform_device *pdev)
 
 	map = syscon_regmap_lookup_by_phandle(dev->of_node, "regmap");
 	if (IS_ERR(map)) {
-		dev_err(dev, "unable to get syscon");
-		return PTR_ERR(map);
+		map = syscon_node_to_regmap(dev->parent->of_node);
+		if (IS_ERR(map)) {
+			dev_err(dev, "unable to get syscon");
+			return PTR_ERR(map);
+		}
 	}
 
 	if (of_property_read_u32(dev->of_node, "offset", &offset)) {
-- 
2.34.1