linux-kernel - [PATCH v6 12/35] drm/kirin: Migrate to aggregate driver

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Message-Id: <20220127200141.1295328-13-swboyd@chromium.org>
Date:   Thu, 27 Jan 2022 12:01:18 -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,
        Xinliang Liu <xinliang.liu@...aro.org>,
        Tian Tao <tiantao6@...ilicon.com>,
        John Stultz <john.stultz@...aro.org>,
        Xinwei Kong <kong.kongxinwei@...ilicon.com>,
        Chen Feng <puck.chen@...ilicon.com>,
        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 v6 12/35] drm/kirin: 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.

Cc: Xinliang Liu <xinliang.liu@...aro.org>
Cc: Tian Tao <tiantao6@...ilicon.com>
Cc: John Stultz <john.stultz@...aro.org>
Cc: Xinwei Kong <kong.kongxinwei@...ilicon.com>
Cc: Chen Feng <puck.chen@...ilicon.com>
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>
---
 .../gpu/drm/hisilicon/kirin/kirin_drm_drv.c   | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index 98ae9a48f3fe..338077908177 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -217,8 +217,9 @@ static int kirin_drm_kms_cleanup(struct drm_device *dev)
 	return 0;
 }
 
-static int kirin_drm_bind(struct device *dev)
+static int kirin_drm_bind(struct aggregate_device *adev)
 {
+	struct device *dev = aggregate_device_parent(adev);
 	struct kirin_drm_data *driver_data;
 	struct drm_device *drm_dev;
 	int ret;
@@ -253,8 +254,9 @@ static int kirin_drm_bind(struct device *dev)
 	return ret;
 }
 
-static void kirin_drm_unbind(struct device *dev)
+static void kirin_drm_unbind(struct aggregate_device *adev)
 {
+	struct device *dev = aggregate_device_parent(adev);
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
 
 	drm_dev_unregister(drm_dev);
@@ -262,9 +264,13 @@ static void kirin_drm_unbind(struct device *dev)
 	drm_dev_put(drm_dev);
 }
 
-static const struct component_master_ops kirin_drm_ops = {
-	.bind = kirin_drm_bind,
-	.unbind = kirin_drm_unbind,
+static struct aggregate_driver kirin_drm_aggregate_driver = {
+	.probe = kirin_drm_bind,
+	.remove = kirin_drm_unbind,
+	.driver = {
+		.name = "kirin_drm",
+		.owner = THIS_MODULE,
+	},
 };
 
 static int kirin_drm_platform_probe(struct platform_device *pdev)
@@ -281,12 +287,12 @@ static int kirin_drm_platform_probe(struct platform_device *pdev)
 	drm_of_component_match_add(dev, &match, compare_of, remote);
 	of_node_put(remote);
 
-	return component_master_add_with_match(dev, &kirin_drm_ops, match);
+	return component_aggregate_register(dev, &kirin_drm_aggregate_driver, match);
 }
 
 static int kirin_drm_platform_remove(struct platform_device *pdev)
 {
-	component_master_del(&pdev->dev, &kirin_drm_ops);
+	component_aggregate_unregister(&pdev->dev, &kirin_drm_aggregate_driver);
 	return 0;
 }
 
-- 
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