staging: vme: add struct vme_dev for VME devices

Instead of using a vanilla 'struct device' for VME devices, add new
'struct vme_dev'. Modifications have been made to the VME framework
API as well as all in-tree VME drivers.

The new vme_dev structure has the following advantages from the
current model used by the driver:

    * Driver functions (probe, remove) now receive a VME device
      instead of a pointer to the bridge device (cleaner design)
    * It's easier to differenciate API calls as bridge-based or
      device-based (ie. cleaner interface).

Signed-off-by: Manohar Vanga <manohar.vanga@cern.ch>
Cc: Martyn Welch <martyn.welch@ge.com>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 27 insertions, 10 deletions

diff --git a/drivers/staging/vme/vme.h b/drivers/staging/vme/vme.h
index 4155d8c2a531..d442cce33c09 100644
--- a/drivers/staging/vme/vme.h
+++ b/drivers/staging/vme/vme.h
@@ -91,17 +91,34 @@ extern struct bus_type vme_bus_type;
 #define VME_SLOT_CURRENT	-1
 #define VME_SLOT_ALL		-2
 
+/**
+ * VME device identifier structure
+ * @bus: The bus ID of the bus the device is on
+ * @slot: The slot this device is plugged into
+ */
 struct vme_device_id {
 	int bus;
 	int slot;
 };
 
+/**
+ * Structure representing a VME device
+ * @id: The ID of the device (currently the bus and slot number)
+ * @bridge: Pointer to the bridge device this device is on
+ * @dev: Internal device structure
+ */
+struct vme_dev {
+	struct vme_device_id id;
+	struct vme_bridge *bridge;
+	struct device dev;
+};
+
 struct vme_driver {
 	struct list_head node;
 	const char *name;
 	const struct vme_device_id *bind_table;
-	int (*probe)  (struct device *, int, int);
-	int (*remove) (struct device *, int, int);
+	int (*probe)  (struct vme_dev *);
+	int (*remove) (struct vme_dev *);
 	void (*shutdown) (void);
 	struct device_driver    driver;
 };
@@ -112,7 +129,7 @@ void vme_free_consistent(struct vme_resource *, size_t,  void *,
 
 size_t vme_get_size(struct vme_resource *);
 
-struct vme_resource *vme_slave_request(struct device *, vme_address_t,
+struct vme_resource *vme_slave_request(struct vme_dev *, vme_address_t,
 	vme_cycle_t);
 int vme_slave_set(struct vme_resource *, int, unsigned long long,
 	unsigned long long, dma_addr_t, vme_address_t, vme_cycle_t);
@@ -120,7 +137,7 @@ int vme_slave_get(struct vme_resource *, int *, unsigned long long *,
 	unsigned long long *, dma_addr_t *, vme_address_t *, vme_cycle_t *);
 void vme_slave_free(struct vme_resource *);
 
-struct vme_resource *vme_master_request(struct device *, vme_address_t,
+struct vme_resource *vme_master_request(struct vme_dev *, vme_address_t,
 	vme_cycle_t, vme_width_t);
 int vme_master_set(struct vme_resource *, int, unsigned long long,
 	unsigned long long, vme_address_t, vme_cycle_t, vme_width_t);
@@ -132,7 +149,7 @@ unsigned int vme_master_rmw(struct vme_resource *, unsigned int, unsigned int,
 	unsigned int, loff_t);
 void vme_master_free(struct vme_resource *);
 
-struct vme_resource *vme_dma_request(struct device *, vme_dma_route_t);
+struct vme_resource *vme_dma_request(struct vme_dev *, vme_dma_route_t);
 struct vme_dma_list *vme_new_dma_list(struct vme_resource *);
 struct vme_dma_attr *vme_dma_pattern_attribute(u32, vme_pattern_t);
 struct vme_dma_attr *vme_dma_pci_attribute(dma_addr_t);
@@ -145,12 +162,12 @@ int vme_dma_list_exec(struct vme_dma_list *);
 int vme_dma_list_free(struct vme_dma_list *);
 int vme_dma_free(struct vme_resource *);
 
-int vme_irq_request(struct device *, int, int,
+int vme_irq_request(struct vme_dev *, int, int,
 	void (*callback)(int, int, void *), void *);
-void vme_irq_free(struct device *, int, int);
-int vme_irq_generate(struct device *, int, int);
+void vme_irq_free(struct vme_dev *, int, int);
+int vme_irq_generate(struct vme_dev *, int, int);
 
-struct vme_resource * vme_lm_request(struct device *);
+struct vme_resource * vme_lm_request(struct vme_dev *);
 int vme_lm_count(struct vme_resource *);
 int vme_lm_set(struct vme_resource *, unsigned long long, vme_address_t,
 	vme_cycle_t);
@@ -160,7 +177,7 @@ int vme_lm_attach(struct vme_resource *, int, void (*callback)(int));
 int vme_lm_detach(struct vme_resource *, int);
 void vme_lm_free(struct vme_resource *);
 
-int vme_slot_get(struct device *);
+int vme_slot_get(struct vme_dev *);
 
 int vme_register_driver(struct vme_driver *);
 void vme_unregister_driver(struct vme_driver *);