arch/arm/mach-footbridge/cats-hw.c

   1 /*
   2  * linux/arch/arm/mach-footbridge/cats-hw.c
   3  *
   4  * CATS machine fixup
   5  *
   6  * Copyright (C) 1998, 1999 Russell King, Phil Blundell
   7  */
   8 #include <linux/ioport.h>
   9 #include <linux/kernel.h>
  10 #include <linux/init.h>
  11
  12 #include <asm/io.h>
  13 #include <asm/mach-types.h>
  14
  15 #define CFG_PORT        0x370
  16 #define INDEX_PORT      (CFG_PORT)
  17 #define DATA_PORT       (CFG_PORT + 1)
  18
  19 static int __init cats_hw_init(void)
  20 {
  21         if (machine_is_cats()) {
  22                 /* Set Aladdin to CONFIGURE mode */
  23                 outb(0x51, CFG_PORT);
  24                 outb(0x23, CFG_PORT);
  25
  26                 /* Select logical device 3 */
  27                 outb(0x07, INDEX_PORT);
  28                 outb(0x03, DATA_PORT);
  29
  30                 /* Set parallel port to DMA channel 3, ECP+EPP1.9,
  31                    enable EPP timeout */
  32                 outb(0x74, INDEX_PORT);
  33                 outb(0x03, DATA_PORT);
  34
  35                 outb(0xf0, INDEX_PORT);
  36                 outb(0x0f, DATA_PORT);
  37
  38                 outb(0xf1, INDEX_PORT);
  39                 outb(0x07, DATA_PORT);
  40
  41                 /* Select logical device 4 */
  42                 outb(0x07, INDEX_PORT);
  43                 outb(0x04, DATA_PORT);
  44
  45                 /* UART1 high speed mode */
  46                 outb(0xf0, INDEX_PORT);
  47                 outb(0x02, DATA_PORT);
  48
  49                 /* Select logical device 5 */
  50                 outb(0x07, INDEX_PORT);
  51                 outb(0x05, DATA_PORT);
  52
  53                 /* UART2 high speed mode */
  54                 outb(0xf0, INDEX_PORT);
  55                 outb(0x02, DATA_PORT);
  56
  57                 /* Set Aladdin to RUN mode */
  58                 outb(0xbb, CFG_PORT);
  59         }
  60
  61         return 0;
  62 }
  63
  64 __initcall(cats_hw_init);