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

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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>
This commit is contained in:
Max Asbock
2005-06-21 17:16:34 -07:00
committed by Linus Torvalds
parent b8acb80846
commit 278d72ae88
6 changed files with 457 additions and 277 deletions
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65
drivers/misc/ibmasm/ibmasm.h
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@@ -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);