MODULE_DESCRIPTION("PS/2 driver library");
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(ps2_init);
-EXPORT_SYMBOL(ps2_sendbyte);
-EXPORT_SYMBOL(ps2_drain);
-EXPORT_SYMBOL(ps2_command);
-EXPORT_SYMBOL(ps2_schedule_command);
-EXPORT_SYMBOL(ps2_handle_ack);
-EXPORT_SYMBOL(ps2_handle_response);
-EXPORT_SYMBOL(ps2_cmd_aborted);
-
/* Work structure to schedule execution of a command */
struct ps2work {
struct work_struct work;
return -ps2dev->nak;
}
+EXPORT_SYMBOL(ps2_sendbyte);
/*
* ps2_drain() waits for device to transmit requested number of bytes
maxbytes = sizeof(ps2dev->cmdbuf);
}
- down(&ps2dev->cmd_sem);
+ mutex_lock(&ps2dev->cmd_mutex);
serio_pause_rx(ps2dev->serio);
ps2dev->flags = PS2_FLAG_CMD;
wait_event_timeout(ps2dev->wait,
!(ps2dev->flags & PS2_FLAG_CMD),
msecs_to_jiffies(timeout));
- up(&ps2dev->cmd_sem);
+ mutex_unlock(&ps2dev->cmd_mutex);
}
+EXPORT_SYMBOL(ps2_drain);
/*
* ps2_is_keyboard_id() checks received ID byte against the list of
* known keyboard IDs.
*/
-static inline int ps2_is_keyboard_id(char id_byte)
+int ps2_is_keyboard_id(char id_byte)
{
- static char keyboard_ids[] = {
+ const static char keyboard_ids[] = {
0xab, /* Regular keyboards */
0xac, /* NCD Sun keyboard */
0x2b, /* Trust keyboard, translated */
return memchr(keyboard_ids, id_byte, sizeof(keyboard_ids)) != NULL;
}
+EXPORT_SYMBOL(ps2_is_keyboard_id);
/*
* ps2_adjust_timeout() is called after receiving 1st byte of command
break;
case PS2_CMD_GETID:
+ /*
+ * Microsoft Natural Elite keyboard responds to
+ * the GET ID command as it were a mouse, with
+ * a single byte. Fail the command so atkbd will
+ * use alternative probe to detect it.
+ */
+ if (ps2dev->cmdbuf[1] == 0xaa) {
+ serio_pause_rx(ps2dev->serio);
+ ps2dev->flags = 0;
+ serio_continue_rx(ps2dev->serio);
+ timeout = 0;
+ }
+
/*
* If device behind the port is not a keyboard there
* won't be 2nd byte of ID response.
return -1;
}
- down(&ps2dev->cmd_sem);
+ if (send && !param) {
+ WARN_ON(1);
+ return -1;
+ }
+
+ mutex_lock(&ps2dev->cmd_mutex);
serio_pause_rx(ps2dev->serio);
ps2dev->flags = command == PS2_CMD_GETID ? PS2_FLAG_WAITID : 0;
ps2dev->flags = 0;
serio_continue_rx(ps2dev->serio);
- up(&ps2dev->cmd_sem);
+ mutex_unlock(&ps2dev->cmd_mutex);
return rc;
}
+EXPORT_SYMBOL(ps2_command);
/*
* ps2_execute_scheduled_command() sends a command, previously scheduled by
* ps2_schedule_command(), to a PS/2 device (keyboard, mouse, etc.)
*/
-static void ps2_execute_scheduled_command(void *data)
+static void ps2_execute_scheduled_command(struct work_struct *work)
{
- struct ps2work *ps2work = data;
+ struct ps2work *ps2work = container_of(work, struct ps2work, work);
ps2_command(ps2work->ps2dev, ps2work->param, ps2work->command);
kfree(ps2work);
ps2work->ps2dev = ps2dev;
ps2work->command = command;
memcpy(ps2work->param, param, send);
- INIT_WORK(&ps2work->work, ps2_execute_scheduled_command, ps2work);
+ INIT_WORK(&ps2work->work, ps2_execute_scheduled_command);
if (!schedule_work(&ps2work->work)) {
kfree(ps2work);
return 0;
}
+EXPORT_SYMBOL(ps2_schedule_command);
/*
* ps2_init() initializes ps2dev structure
void ps2_init(struct ps2dev *ps2dev, struct serio *serio)
{
- init_MUTEX(&ps2dev->cmd_sem);
+ mutex_init(&ps2dev->cmd_mutex);
+ lockdep_set_subclass(&ps2dev->cmd_mutex, serio->depth);
init_waitqueue_head(&ps2dev->wait);
ps2dev->serio = serio;
}
+EXPORT_SYMBOL(ps2_init);
/*
* ps2_handle_ack() is supposed to be used in interrupt handler
return 1;
}
+EXPORT_SYMBOL(ps2_handle_ack);
/*
* ps2_handle_response() is supposed to be used in interrupt handler
return 1;
}
+EXPORT_SYMBOL(ps2_handle_response);
void ps2_cmd_aborted(struct ps2dev *ps2dev)
{
ps2dev->flags = 0;
}
-
+EXPORT_SYMBOL(ps2_cmd_aborted);