linux-kernel - [PATCH v9 2/5] staging: vc04_services: vchiq_arm: Register vchiq_bus

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Message-Id: <20230719164427.1383646-3-umang.jain@ideasonboard.com>
Date:   Wed, 19 Jul 2023 22:14:24 +0530
From:   Umang Jain <umang.jain@...asonboard.com>
To:     linux-staging@...ts.linux.dev,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     stefan.wahren@...e.com, gregkh@...uxfoundation.org,
        f.fainelli@...il.com, athierry@...hat.com, error27@...il.com,
        dave.stevenson@...pberrypi.com, kieran.bingham@...asonboard.com,
        laurent.pinchart@...asonboard.com,
        Umang Jain <umang.jain@...asonboard.com>
Subject: [PATCH v9 2/5] staging: vc04_services: vchiq_arm: Register vchiq_bus_type

Register the vchiq_bus_type bus with the vchiq interface.
The bcm2835-camera and bcm2835_audio will be registered to this bus type
going ahead.

Signed-off-by: Umang Jain <umang.jain@...asonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@...asonboard.com>
---
 .../vc04_services/interface/vchiq_arm/vchiq_arm.c        | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index aa2313f3bcab..e8d40f891449 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -12,6 +12,7 @@
 #include <linux/cdev.h>
 #include <linux/fs.h>
 #include <linux/device.h>
+#include <linux/device/bus.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
@@ -34,6 +35,7 @@
 #include "vchiq_ioctl.h"
 #include "vchiq_arm.h"
 #include "vchiq_debugfs.h"
+#include "vchiq_device.h"
 #include "vchiq_connected.h"
 #include "vchiq_pagelist.h"
 
@@ -1870,6 +1872,12 @@ static int __init vchiq_driver_init(void)
 {
 	int ret;
 
+	ret = bus_register(&vchiq_bus_type);
+	if (ret) {
+		pr_err("Failed to register %s\n", vchiq_bus_type.name);
+		return ret;
+	}
+
 	ret = platform_driver_register(&vchiq_driver);
 	if (ret)
 		pr_err("Failed to register vchiq driver\n");
@@ -1880,6 +1888,7 @@ module_init(vchiq_driver_init);
 
 static void __exit vchiq_driver_exit(void)
 {
+	bus_unregister(&vchiq_bus_type);
 	platform_driver_unregister(&vchiq_driver);
 }
 module_exit(vchiq_driver_exit);
-- 
2.39.1