static void ms_mouse_interrupt(int irq, void *dev_id, struct pt_regs * regs)
{
char dx, dy;
unsigned char buttons;
outb(MS_MSE_COMMAND_MODE, MS_MSE_CONTROL_PORT);
outb((inb(MS_MSE_DATA_PORT) | 0x20), MS_MSE_DATA_PORT);
outb(MS_MSE_READ_X, MS_MSE_CONTROL_PORT);
dx = inb(MS_MSE_DATA_PORT);
outb(MS_MSE_READ_Y, MS_MSE_CONTROL_PORT);
dy = inb(MS_MSE_DATA_PORT);
outb(MS_MSE_READ_BUTTONS, MS_MSE_CONTROL_PORT);
buttons = ~(inb(MS_MSE_DATA_PORT)) & 0x07;
outb(MS_MSE_COMMAND_MODE, MS_MSE_CONTROL_PORT);
outb((inb(MS_MSE_DATA_PORT) & 0xdf), MS_MSE_DATA_PORT);
/* why did the original have:
* if (dx != 0 || dy != 0 || buttons != mouse.buttons ||
* ((~buttons) & 0x07))
* ^^^^^^^^^^^^^^^^^^^ this?
*/
busmouse_add_movementbuttons(msedev, dx, -dy, buttons);
}
void mouse_interrupt(int irq, void *dev_id, struct pt_regs * regs)
{
char dx, dy, buttons;
ATIXL_MSE_DISABLE_UPDATE(); /* Note that interrupts are still enabled */
outb(ATIXL_MSE_READ_X, ATIXL_MSE_CONTROL_PORT); /* Select IR1 - X movement */
dx = inb( ATIXL_MSE_DATA_PORT);
outb(ATIXL_MSE_READ_Y, ATIXL_MSE_CONTROL_PORT); /* Select IR2 - Y movement */
dy = inb( ATIXL_MSE_DATA_PORT);
outb(ATIXL_MSE_READ_BUTTONS, ATIXL_MSE_CONTROL_PORT); /* Select IR0 - Button Status */
buttons = inb( ATIXL_MSE_DATA_PORT);
busmouse_add_movementbuttons(msedev, dx, -dy, buttons);
ATIXL_MSE_ENABLE_UPDATE();
}