staging: vchiq: Move certain declarations to vchiq_arm.h

Move certain declarations from vchiq_arm.c to vchiq_arm.h to allow
code sharing. This will be useful when we eventually separate the vchiq
char driver code from platform code, into its own file.

Reviewed-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Ojaswin Mujoo <ojaswin98@gmail.com>
Link: https://lore.kernel.org/r/8abcbd9fb3227e2a78ccc4a1186c8c0801061a68.1626882325.git.ojaswin98@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 62 deletions

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 3a0724fe25ea..3152466086f3 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -38,12 +38,6 @@
 #undef MODULE_PARAM_PREFIX
 #define MODULE_PARAM_PREFIX DEVICE_NAME "."
 
-/* Some per-instance constants */
-#define MAX_COMPLETIONS 128
-#define MAX_SERVICES 64
-#define MAX_ELEMENTS 8
-#define MSG_QUEUE_SIZE 128
-
 #define KEEPALIVE_VER 1
 #define KEEPALIVE_VER_MIN KEEPALIVE_VER
 
@@ -51,62 +45,12 @@
 int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT;
 int vchiq_susp_log_level = VCHIQ_LOG_ERROR;
 
-struct user_service {
-	struct vchiq_service *service;
-	void __user *userdata;
-	struct vchiq_instance *instance;
-	char is_vchi;
-	char dequeue_pending;
-	char close_pending;
-	int message_available_pos;
-	int msg_insert;
-	int msg_remove;
-	struct completion insert_event;
-	struct completion remove_event;
-	struct completion close_event;
-	struct vchiq_header *msg_queue[MSG_QUEUE_SIZE];
-};
-
-struct bulk_waiter_node {
-	struct bulk_waiter bulk_waiter;
-	int pid;
-	struct list_head list;
-};
-
-struct vchiq_instance {
-	struct vchiq_state *state;
-	struct vchiq_completion_data_kernel completions[MAX_COMPLETIONS];
-	int completion_insert;
-	int completion_remove;
-	struct completion insert_event;
-	struct completion remove_event;
-	struct mutex completion_mutex;
-
-	int connected;
-	int closing;
-	int pid;
-	int mark;
-	int use_close_delivered;
-	int trace;
-
-	struct list_head bulk_waiter_list;
-	struct mutex bulk_waiter_list_mutex;
-
-	struct vchiq_debugfs_node debugfs_node;
-};
-
-struct dump_context {
-	char __user *buf;
-	size_t actual;
-	size_t space;
-	loff_t offset;
-};
+DEFINE_SPINLOCK(msg_queue_spinlock);
+struct vchiq_state g_state;
 
 static struct cdev    vchiq_cdev;
 static dev_t          vchiq_devid;
-static struct vchiq_state g_state;
 static struct class  *vchiq_class;
-static DEFINE_SPINLOCK(msg_queue_spinlock);
 static struct platform_device *bcm2835_camera;
 static struct platform_device *bcm2835_audio;
 
@@ -199,7 +143,7 @@ failed:
 }
 EXPORT_SYMBOL(vchiq_initialise);
 
-static void free_bulk_waiter(struct vchiq_instance *instance)
+void free_bulk_waiter(struct vchiq_instance *instance)
 {
 	struct bulk_waiter_node *waiter, *next;
 
@@ -561,7 +505,7 @@ add_completion(struct vchiq_instance *instance, enum vchiq_reason reason,
 	return VCHIQ_SUCCESS;
 }
 
-static enum vchiq_status
+enum vchiq_status
 service_callback(enum vchiq_reason reason, struct vchiq_header *header,
 		 unsigned int handle, void *bulk_userdata)
 {
@@ -2142,7 +2086,7 @@ vchiq_fops = {
  *
  *	Returns 0 on success else returns the error code.
  */
-static int vchiq_register_chrdev(struct device *parent)
+int vchiq_register_chrdev(struct device *parent)
 {
 	struct device *vchiq_dev;
 	int ret;
@@ -2201,7 +2145,7 @@ error_exit:
  *	vchiq_deregister_chrdev	- Deregister and cleanup the vchiq char
  *				  driver and device files
  */
-static void vchiq_deregister_chrdev(void)
+void vchiq_deregister_chrdev(void)
 {
 	device_destroy(vchiq_class, vchiq_devid);
 	cdev_del(&vchiq_cdev);