tifm_7xx1: Merge media insert and media remove functions

Hardware does not say whether card was inserted or removed when reporting
socket events. Moreover, during suspend, media can be removed or switched
to some other card type without notification. Therefore, for each socket
in the change set the following is performed:
1. If there's active device in the socket it's unregistered
2. Media detection is performed
3. If detection recognizes supportable media, new device is registered

This patch also alters some macros and variable names to enhance clarity.
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

include/linux/tifm.h

@@ -62,11 +62,10 @@ enum {
 
 
 #define TIFM_IRQ_ENABLE           0x80000000
-#define TIFM_IRQ_SOCKMASK         0x00000001
-#define TIFM_IRQ_CARDMASK         0x00000100
-#define TIFM_IRQ_FIFOMASK         0x00010000
+#define TIFM_IRQ_SOCKMASK(x)      (x)
+#define TIFM_IRQ_CARDMASK(x)      ((x) << 8)
+#define TIFM_IRQ_FIFOMASK(x)      ((x) << 16)
 #define TIFM_IRQ_SETALL           0xffffffff
-#define TIFM_IRQ_SETALLSOCK       0x0000000f
 
 #define TIFM_CTRL_LED             0x00000040
 #define TIFM_CTRL_FAST_CLK        0x00000100
@@ -108,18 +107,16 @@ struct tifm_driver {
 
 struct tifm_adapter {
 	char __iomem            *addr;
-	unsigned int            irq_status;
-	unsigned int            insert_mask;
-	unsigned int            remove_mask;
 	spinlock_t              lock;
+	unsigned int            irq_status;
+	unsigned int            socket_change_set;
 	unsigned int            id;
-	unsigned int            max_sockets;
+	unsigned int            num_sockets;
+	struct tifm_dev         **sockets;
 	char                    wq_name[KOBJ_NAME_LEN];
 	unsigned int            inhibit_new_cards;
 	struct workqueue_struct *wq;
-	struct work_struct      media_inserter;
-	struct work_struct      media_remover;
-	struct tifm_dev         **sockets;
+	struct work_struct      media_switcher;
 	struct class_device     cdev;
 	struct device           *dev;