linux-kernel - [PATCH v5 27/32] power: supply: ab8500: Migrate to aggregate driver

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Date:   Thu,  6 Jan 2022 13:45:50 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Douglas Anderson <dianders@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        Sebastian Reichel <sre@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-pm@...r.kernel.org, Daniel Vetter <daniel.vetter@...ll.ch>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Rob Clark <robdclark@...il.com>,
        Russell King <rmk+kernel@....linux.org.uk>,
        Saravana Kannan <saravanak@...gle.com>
Subject: [PATCH v5 27/32] power: supply: ab8500: Migrate to aggregate driver

Use an aggregate driver instead of component ops so that we can get
proper driver probe ordering of the aggregate device with respect to all
the component devices that make up the aggregate device.

Acked-by: Sebastian Reichel <sre@...nel.org>
Tested-by: Linus Walleij <linus.walleij@...aro.org>
Cc: <linux-pm@...r.kernel.org>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Rob Clark <robdclark@...il.com>
Cc: Russell King <rmk+kernel@....linux.org.uk>
Cc: Saravana Kannan <saravanak@...gle.com>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/power/supply/ab8500_charger.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c
index 15eadaf46f14..52d4105e28f2 100644
--- a/drivers/power/supply/ab8500_charger.c
+++ b/drivers/power/supply/ab8500_charger.c
@@ -3312,8 +3312,9 @@ static const struct power_supply_desc ab8500_usb_chg_desc = {
 	.get_property	= ab8500_charger_usb_get_property,
 };
 
-static int ab8500_charger_bind(struct device *dev)
+static int ab8500_charger_bind(struct aggregate_device *adev)
 {
+	struct device *dev = adev->parent;
 	struct ab8500_charger *di = dev_get_drvdata(dev);
 	int ch_stat;
 	int ret;
@@ -3354,8 +3355,9 @@ static int ab8500_charger_bind(struct device *dev)
 	return 0;
 }
 
-static void ab8500_charger_unbind(struct device *dev)
+static void ab8500_charger_unbind(struct aggregate_device *adev)
 {
+	struct device *dev = adev->parent;
 	struct ab8500_charger *di = dev_get_drvdata(dev);
 	int ret;
 
@@ -3380,9 +3382,13 @@ static void ab8500_charger_unbind(struct device *dev)
 	component_unbind_all(dev, di);
 }
 
-static const struct component_master_ops ab8500_charger_comp_ops = {
-	.bind = ab8500_charger_bind,
-	.unbind = ab8500_charger_unbind,
+static struct aggregate_driver ab8500_charger_aggregate_driver = {
+	.probe = ab8500_charger_bind,
+	.remove = ab8500_charger_unbind,
+	.driver = {
+		.name = "ab8500_charger_agg",
+		.owner = THIS_MODULE,
+	},
 };
 
 static struct platform_driver *const ab8500_charger_component_drivers[] = {
@@ -3663,9 +3669,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
 	}
 
 
-	ret = component_master_add_with_match(&pdev->dev,
-					      &ab8500_charger_comp_ops,
-					      match);
+	ret = component_aggregate_register(&pdev->dev, &ab8500_charger_aggregate_driver, match);
 	if (ret) {
 		dev_err(dev, "failed to add component master\n");
 		goto free_notifier;
@@ -3688,7 +3692,7 @@ static int ab8500_charger_remove(struct platform_device *pdev)
 {
 	struct ab8500_charger *di = platform_get_drvdata(pdev);
 
-	component_master_del(&pdev->dev, &ab8500_charger_comp_ops);
+	component_aggregate_unregister(&pdev->dev, &ab8500_charger_aggregate_driver);
 
 	usb_unregister_notifier(di->usb_phy, &di->nb);
 	usb_put_phy(di->usb_phy);
-- 
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