arch/arm/mach-s3c2410/cpu.h

   1 /* arch/arm/mach-s3c2410/cpu.h
   2  *
   3  * Copyright (c) 2004-2005 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * Header file for S3C24XX CPU support
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Modifications:
  13  *     24-Aug-2004 BJD  Start of generic S3C24XX support
  14  *     18-Oct-2004 BJD  Moved board struct into this file
  15  *     04-Jan-2005 BJD  New uart initialisation
  16  *     10-Jan-2005 BJD  Moved generic init here, specific to cpu headers
  17  *     14-Jan-2005 BJD  Added s3c24xx_init_clocks() call
  18  *     10-Mar-2005 LCVR Changed S3C2410_{VA,SZ} to S3C24XX_{VA,SZ} & IODESC_ENT
  19  *     14-Mar-2005 BJD  Updated for __iomem
  20  *     15-Jan-2006 LCVR Updated S3C2410_PA_##x to new S3C24XX_PA_##x macro
  21 */
  22
  23 /* todo - fix when rmk changes iodescs to use `void __iomem *` */
  24
  25 #define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE }
  26
  27 #ifndef MHZ
  28 #define MHZ (1000*1000)
  29 #endif
  30
  31 #define print_mhz(m) ((m) / MHZ), ((m / 1000) % 1000)
  32
  33 /* forward declaration */
  34 struct s3c24xx_uart_resources;
  35 struct platform_device;
  36 struct s3c2410_uartcfg;
  37 struct map_desc;
  38
  39 /* core initialisation functions */
  40
  41 extern void s3c24xx_init_irq(void);
  42
  43 extern void s3c24xx_init_io(struct map_desc *mach_desc, int size);
  44
  45 extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);
  46
  47 extern void s3c24xx_init_clocks(int xtal);
  48
  49 extern void s3c24xx_init_uartdevs(char *name,
  50                                   struct s3c24xx_uart_resources *res,
  51                                   struct s3c2410_uartcfg *cfg, int no);
  52
  53 /* the board structure is used at first initialsation time
  54  * to get info such as the devices to register for this
  55  * board. This is done because platfrom_add_devices() cannot
  56  * be called from the map_io entry.
  57 */
  58
  59 struct s3c24xx_board {
  60         struct platform_device  **devices;
  61         unsigned int              devices_count;
  62
  63         struct clk              **clocks;
  64         unsigned int              clocks_count;
  65 };
  66
  67 extern void s3c24xx_set_board(struct s3c24xx_board *board);
  68
  69 /* timer for 2410/2440 */
  70
  71 struct sys_timer;
  72 extern struct sys_timer s3c24xx_timer;
  73
  74 /* system device classes */
  75
  76 extern struct sysdev_class s3c2440_sysclass;
  77 extern struct sysdev_class s3c2442_sysclass;