예제 #1
0
int __init hpfb_init(void)
{
	unsigned int sid;
	mm_segment_t fs;
	unsigned char i;
	int err;

	/*                                                           
                                                         
                                                         
                                           
   
                                                           
                                                               
  */
#define INTFBVADDR 0xf0560000
#define INTFBPADDR 0x560000

	if (!MACH_IS_HP300)
		return -ENODEV;

	if (fb_get_options("hpfb", NULL))
		return -ENODEV;

	err = dio_register_driver(&hpfb_driver);
	if (err)
		return err;

	fs = get_fs();
	set_fs(KERNEL_DS);
	err = get_user(i, (unsigned char *)INTFBVADDR + DIO_IDOFF);
	set_fs(fs);

	if (!err && (i == DIO_ID_FBUFFER) && topcat_sid_ok(sid = DIO_SECID(INTFBVADDR))) {
		if (!request_mem_region(INTFBPADDR, DIO_DEVSIZE, "Internal Topcat"))
			return -EBUSY;
		printk(KERN_INFO "Internal Topcat found (secondary id %02x)\n", sid);
		if (hpfb_init_one(INTFBPADDR, INTFBVADDR)) {
			return -ENOMEM;
		}
	}
	return 0;
}
예제 #2
0
파일: hpfb.c 프로젝트: ivucica/linux
int __init hpfb_init(void)
{
	unsigned int sid;
	mm_segment_t fs;
	unsigned char i;
	int err;

	/* Topcats can be on the internal IO bus or real DIO devices.
	 * The internal variant sits at 0x560000; it has primary
	 * and secondary ID registers just like the DIO version.
	 * So we merge the two detection routines.
	 *
	 * Perhaps this #define should be in a global header file:
	 * I believe it's common to all internal fbs, not just topcat.
	 */
#define INTFBVADDR 0xf0560000
#define INTFBPADDR 0x560000

	if (!MACH_IS_HP300)
		return -ENXIO;

	if (fb_get_options("hpfb", NULL))
		return -ENODEV;

	err = dio_register_driver(&hpfb_driver);
	if (err)
		return err;

	fs = get_fs();
	set_fs(KERNEL_DS);
	err = get_user(i, (unsigned char *)INTFBVADDR + DIO_IDOFF);
	set_fs(fs);

	if (!err && (i == DIO_ID_FBUFFER) && topcat_sid_ok(sid = DIO_SECID(INTFBVADDR))) {
		if (!request_mem_region(INTFBPADDR, DIO_DEVSIZE, "Internal Topcat"))
			return -EBUSY;
		printk(KERN_INFO "Internal Topcat found (secondary id %02x)\n", sid);
		if (hpfb_init_one(INTFBPADDR, INTFBVADDR)) {
			return -ENOMEM;
		}
	}
	return 0;
}