[PATCH] ibmasm driver: redesign handling of remote control events

This patch rewrites the handling of remote control events.  Rather than making
them available from a special file in the ibmasmfs, now the events from the
RSA card get translated into kernel input events and injected into the input
subsystem.  The driver now will generate two /dev/input/eventX nodes -- one
for the keyboard and one for the mouse.  The mouse node generates absolute
events more like a touch pad than a mouse.

Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 24 insertions, 41 deletions

diff --git a/drivers/misc/ibmasm/ibmasm.h b/drivers/misc/ibmasm/ibmasm.h
index 35c4def5af18..653a7d096a8b 100644
--- a/drivers/misc/ibmasm/ibmasm.h
+++ b/drivers/misc/ibmasm/ibmasm.h
@@ -34,16 +34,31 @@
 #include <linux/version.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
+#include <linux/input.h>
 
 /* Driver identification */
 #define DRIVER_NAME     "ibmasm"
-#define DRIVER_VERSION  "0.4"
-#define DRIVER_AUTHOR   "Max Asbock"
+#define DRIVER_VERSION  "1.0"
+#define DRIVER_AUTHOR   "Max Asbock <masbock@us.ibm.com>, Vernon Mauery <vernux@us.ibm.com>"
 #define DRIVER_DESC     "IBM ASM Service Processor Driver"
 
 #define err(msg) printk(KERN_ERR "%s: " msg "\n", DRIVER_NAME)
 #define info(msg) printk(KERN_INFO "%s: " msg "\n", DRIVER_NAME)
 
+extern int ibmasm_debug;
+#define dbg(STR, ARGS...)                                       \
+        do {                                                    \
+                if (ibmasm_debug)                               \
+                        printk(KERN_DEBUG STR , ##ARGS);        \
+        } while (0)
+
+static inline char *get_timestamp(char *buf)
+{
+        struct timeval now;
+        do_gettimeofday(&now);
+        sprintf(buf, "%lu.%lu", now.tv_sec, now.tv_usec);
+        return buf;
+}
 
 #define IBMASM_CMD_PENDING      0       
 #define IBMASM_CMD_COMPLETE     1       
@@ -121,41 +136,11 @@ struct reverse_heartbeat {
         unsigned int            stopped;
 };
 
-
-/* remote console events */
-struct mouse_event {
-        long            x;
-        long            y;
-        unsigned char   buttons;
-        unsigned char   transitions;
+struct ibmasm_remote {
+        struct input_dev keybd_dev;
+        struct input_dev mouse_dev;
 };
 
-struct keyboard_event {
-        unsigned long   key_code;
-        unsigned char   key_down;
-};
-
-struct remote_event {
-        unsigned long   type;
-        union {
-                struct mouse_event      mouse;
-                struct keyboard_event   keyboard;
-        } data;
-};
-
-#define DRIVER_REMOTE_QUEUE_SIZE 240
-
-struct remote_queue {
-        struct remote_event     *start;
-        struct remote_event     *end;
-        struct remote_event     *reader;
-        struct remote_event     *writer;
-        unsigned int            size;
-        int                     open;
-        wait_queue_head_t       wait;
-};
-
-
 struct service_processor {
         struct list_head        node;
         spinlock_t              lock;
@@ -168,7 +153,7 @@ struct service_processor {
         char                    dirname[IBMASM_NAME_SIZE];
         char                    devname[IBMASM_NAME_SIZE];
         unsigned int            number;
-        struct remote_queue     remote_queue;
+        struct ibmasm_remote    *remote;
         int                     serial_line;
         struct device           *dev;
 };
@@ -210,11 +195,9 @@ extern int ibmasm_send_i2o_message(struct service_processor *sp);
 extern irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id, struct pt_regs *regs);
 
 /* remote console */
-extern void ibmasm_handle_mouse_interrupt(struct service_processor *sp);
-extern int ibmasm_init_remote_queue(struct service_processor *sp);
-extern void ibmasm_free_remote_queue(struct service_processor *sp);
-extern void ibmasm_advance_reader(struct remote_queue *q, unsigned int n);
-extern size_t ibmasm_events_available(struct remote_queue *q);
+extern void ibmasm_handle_mouse_interrupt(struct service_processor *sp, struct pt_regs *regs);
+extern int ibmasm_init_remote_input_dev(struct service_processor *sp);
+extern void ibmasm_free_remote_input_dev(struct service_processor *sp);
 
 /* file system */
 extern int ibmasmfs_register(void);