linux-kernel - [PATCH 10/11] pmdomain: core: Default to use of_genpd_sync

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Message-ID: <20250417142513.312939-11-ulf.hansson@linaro.org>
Date: Thu, 17 Apr 2025 16:25:08 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Saravana Kannan <saravanak@...gle.com>,
	Stephen Boyd <sboyd@...nel.org>,
	linux-pm@...r.kernel.org
Cc: "Rafael J . Wysocki" <rafael@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Michael Grzeschik <m.grzeschik@...gutronix.de>,
	Bjorn Andersson <andersson@...nel.org>,
	Abel Vesa <abel.vesa@...aro.org>,
	Devarsh Thakkar <devarsht@...v0571a.ent.ti.com>,
	Peng Fan <peng.fan@....nxp.com>,
	Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	Johan Hovold <johan@...nel.org>,
	Maulik Shah <maulik.shah@....qualcomm.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 10/11] pmdomain: core: Default to use of_genpd_sync_state() for genpd providers

Unless the typical platform driver that act as genpd provider, has its own
->sync_state() callback implemented let's default to use
of_genpd_sync_state().

More precisely, while adding a genpd OF provider let's assign the
->sync_state() callback, in case the fwnode has a device and its driver/bus
doesn't have the ->sync_state() set already. In this way the typical
platform driver doesn't need to assign ->sync_state(), unless it has some
additional things to manage beyond genpds.

Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---
 drivers/pmdomain/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 9c5a77bf59d2..695d7d9e5582 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -2671,6 +2671,8 @@ int of_genpd_add_provider_simple(struct device_node *np,
 
 	if (!dev)
 		genpd->sync_state = GENPD_SYNC_STATE_SIMPLE;
+	else if (!dev_has_sync_state(dev))
+		dev_set_drv_sync_state(dev, of_genpd_sync_state);
 
 	device_set_node(&genpd->dev, fwnode);
 
@@ -2740,6 +2742,8 @@ int of_genpd_add_provider_onecell(struct device_node *np,
 
 	if (!dev)
 		sync_state = true;
+	else if (!dev_has_sync_state(dev))
+		dev_set_drv_sync_state(dev, of_genpd_sync_state);
 
 	for (i = 0; i < data->num_domains; i++) {
 		genpd = data->domains[i];
-- 
2.43.0