99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/*
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* linux/kernel/chr_drv/mouse.c
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*
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* Generic mouse open routine by Johan Myreen
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*
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* Based on code from Linus
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*
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* Teemu Rantanen's Microsoft Busmouse support and Derrick Cole's
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* changes incorporated into 0.97pl4
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* by Peter Cervasio (pete%q106fm.uucp@wupost.wustl.edu) (08SEP92)
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* See busmouse.c for particulars.
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*
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* Made things a lot mode modular - easy to compile in just one or two
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* of the mouse drivers, as they are now completely independent. Linus.
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*/
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#include <linux/fs.h>
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#include <linux/errno.h>
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#include <linux/mouse.h>
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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/*
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* note that you can remove any or all of the drivers by undefining
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* the minor values in <linux/mouse.h>
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*/
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extern struct file_operations bus_mouse_fops;
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extern struct file_operations psaux_fops;
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extern struct file_operations ms_bus_mouse_fops;
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extern struct file_operations atixl_busmouse_fops;
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extern unsigned long bus_mouse_init(unsigned long);
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extern unsigned long psaux_init(unsigned long);
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extern unsigned long ms_bus_mouse_init(unsigned long);
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extern unsigned long atixl_busmouse_init(unsigned long);
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static int mouse_open(struct inode * inode, struct file * file)
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{
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int minor = MINOR(inode->i_rdev);
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switch (minor) {
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#ifdef CONFIG_BUSMOUSE
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case BUSMOUSE_MINOR:
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file->f_op = &bus_mouse_fops;
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break;
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#endif
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#if defined CONFIG_PSMOUSE || defined CONFIG_82C710_MOUSE
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case PSMOUSE_MINOR:
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file->f_op = &psaux_fops;
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break;
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#endif
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#ifdef CONFIG_MS_BUSMOUSE
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case MS_BUSMOUSE_MINOR:
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file->f_op = &ms_bus_mouse_fops;
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break;
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#endif
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#ifdef CONFIG_ATIXL_BUSMOUSE
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case ATIXL_BUSMOUSE_MINOR:
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file->f_op = &atixl_busmouse_fops;
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break;
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#endif
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default:
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return -ENODEV;
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}
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return file->f_op->open(inode,file);
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}
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static struct file_operations mouse_fops = {
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NULL, /* seek */
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NULL, /* read */
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NULL, /* write */
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NULL, /* readdir */
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NULL, /* select */
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NULL, /* ioctl */
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NULL, /* mmap */
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mouse_open,
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NULL /* release */
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};
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unsigned long mouse_init(unsigned long kmem_start)
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{
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#ifdef CONFIG_BUSMOUSE
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kmem_start = bus_mouse_init(kmem_start);
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#endif
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#if defined CONFIG_PSMOUSE || defined CONFIG_82C710_MOUSE
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kmem_start = psaux_init(kmem_start);
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#endif
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#ifdef CONFIG_MS_BUSMOUSE
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kmem_start = ms_bus_mouse_init(kmem_start);
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#endif
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#ifdef CONFIG_ATIXL_BUSMOUSE
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kmem_start = atixl_busmouse_init(kmem_start);
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#endif
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if (register_chrdev(MOUSE_MAJOR,"mouse",&mouse_fops))
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printk("unable to get major %d for mouse devices\n",
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MOUSE_MAJOR);
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return kmem_start;
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}
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