Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Stephen Boyd <swboyd@chromium.org>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Douglas Anderson <dianders@chromium.org>
Cc:     linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
        Tomas Winkler <tomas.winkler@intel.com>,
        Vitaly Lubart <vitaly.lubart@intel.com>,
        Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Rob Clark <robdclark@gmail.com>,
        Russell King <rmk+kernel@arm.linux.org.uk>,
        Saravana Kannan <saravanak@google.com>,
        Alexander Usyskin <sanniu@gmail.com>
Subject: [PATCH v6 26/35] mei: Migrate to aggregate driver
Date:   Thu, 27 Jan 2022 12:01:32 -0800
Message-Id: <20220127200141.1295328-27-swboyd@chromium.org>
In-Reply-To: <20220127200141.1295328-1-swboyd@chromium.org>
References: <20220127200141.1295328-1-swboyd@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

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: Tomas Winkler <tomas.winkler@intel.com>
Cc: Vitaly Lubart <vitaly.lubart@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Alexander Usyskin <sanniu@gmail.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/misc/mei/hdcp/mei_hdcp.c | 22 +++++++++++++---------
 drivers/misc/mei/pxp/mei_pxp.c   | 22 +++++++++++++---------
 2 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
index ec2a4fce8581..3c6e4e3bf212 100644
--- a/drivers/misc/mei/hdcp/mei_hdcp.c
+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
@@ -732,8 +732,9 @@ static const struct i915_hdcp_component_ops mei_hdcp_ops = {
 	.close_hdcp_session = mei_hdcp_close_session,
 };
 
-static int mei_component_master_bind(struct device *dev)
+static int mei_hdcp_aggregate_bind(struct aggregate_device *adev)
 {
+	struct device *dev = aggregate_device_parent(adev);
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
 	struct i915_hdcp_comp_master *comp_master =
 						mei_cldev_get_drvdata(cldev);
@@ -749,8 +750,9 @@ static int mei_component_master_bind(struct device *dev)
 	return 0;
 }
 
-static void mei_component_master_unbind(struct device *dev)
+static void mei_hdcp_aggregate_unbind(struct aggregate_device *adev)
 {
+	struct device *dev = aggregate_device_parent(adev);
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
 	struct i915_hdcp_comp_master *comp_master =
 						mei_cldev_get_drvdata(cldev);
@@ -759,9 +761,13 @@ static void mei_component_master_unbind(struct device *dev)
 	component_unbind_all(dev, comp_master);
 }
 
-static const struct component_master_ops mei_component_master_ops = {
-	.bind = mei_component_master_bind,
-	.unbind = mei_component_master_unbind,
+static struct aggregate_driver mei_aggregate_driver = {
+	.probe = mei_hdcp_aggregate_bind,
+	.remove = mei_hdcp_aggregate_unbind,
+	.driver = {
+		.name = "mei_hdcp_agg",
+		.owner = THIS_MODULE,
+	},
 };
 
 /**
@@ -826,9 +832,7 @@ static int mei_hdcp_probe(struct mei_cl_device *cldev,
 	}
 
 	mei_cldev_set_drvdata(cldev, comp_master);
-	ret = component_master_add_with_match(&cldev->dev,
-					      &mei_component_master_ops,
-					      master_match);
+	ret = component_aggregate_register(&cldev->dev, &mei_aggregate_driver, master_match);
 	if (ret < 0) {
 		dev_err(&cldev->dev, "Master comp add failed %d\n", ret);
 		goto err_exit;
@@ -850,7 +854,7 @@ static void mei_hdcp_remove(struct mei_cl_device *cldev)
 						mei_cldev_get_drvdata(cldev);
 	int ret;
 
-	component_master_del(&cldev->dev, &mei_component_master_ops);
+	component_aggregate_unregister(&cldev->dev, &mei_aggregate_driver);
 	kfree(comp_master);
 	mei_cldev_set_drvdata(cldev, NULL);
 
diff --git a/drivers/misc/mei/pxp/mei_pxp.c b/drivers/misc/mei/pxp/mei_pxp.c
index f7380d387bab..887e43e6ba5f 100644
--- a/drivers/misc/mei/pxp/mei_pxp.c
+++ b/drivers/misc/mei/pxp/mei_pxp.c
@@ -83,8 +83,9 @@ static const struct i915_pxp_component_ops mei_pxp_ops = {
 	.recv = mei_pxp_receive_message,
 };
 
-static int mei_component_master_bind(struct device *dev)
+static int mei_pxp_aggregate_bind(struct aggregate_device *adev)
 {
+	struct device *dev = aggregate_device_parent(adev);
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
 	struct i915_pxp_component *comp_master = mei_cldev_get_drvdata(cldev);
 	int ret;
@@ -98,17 +99,22 @@ static int mei_component_master_bind(struct device *dev)
 	return 0;
 }
 
-static void mei_component_master_unbind(struct device *dev)
+static void mei_pxp_aggregate_unbind(struct aggregate_device *adev)
 {
+	struct device *dev = aggregate_device_parent(adev);
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
 	struct i915_pxp_component *comp_master = mei_cldev_get_drvdata(cldev);
 
 	component_unbind_all(dev, comp_master);
 }
 
-static const struct component_master_ops mei_component_master_ops = {
-	.bind = mei_component_master_bind,
-	.unbind = mei_component_master_unbind,
+static struct aggregate_driver mei_aggregate_driver = {
+	.probe = mei_pxp_aggregate_bind,
+	.remove = mei_pxp_aggregate_unbind,
+	.driver = {
+		.name = "mei_pxp_agg",
+		.owner = THIS_MODULE,
+	}
 };
 
 /**
@@ -173,9 +179,7 @@ static int mei_pxp_probe(struct mei_cl_device *cldev,
 	}
 
 	mei_cldev_set_drvdata(cldev, comp_master);
-	ret = component_master_add_with_match(&cldev->dev,
-					      &mei_component_master_ops,
-					      master_match);
+	ret = component_aggregate_register(&cldev->dev, &mei_aggregate_driver, master_match);
 	if (ret < 0) {
 		dev_err(&cldev->dev, "Master comp add failed %d\n", ret);
 		goto err_exit;
@@ -196,7 +200,7 @@ static void mei_pxp_remove(struct mei_cl_device *cldev)
 	struct i915_pxp_component *comp_master = mei_cldev_get_drvdata(cldev);
 	int ret;
 
-	component_master_del(&cldev->dev, &mei_component_master_ops);
+	component_aggregate_unregister(&cldev->dev, &mei_aggregate_driver);
 	kfree(comp_master);
 	mei_cldev_set_drvdata(cldev, NULL);
 
-- 
https://chromeos.dev