arch/arm/mach-omap1/board-ams-delta.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-ams-delta.c
   3  *
   4  * Modified from board-generic.c
   5  *
   6  * Board specific inits for the Amstrad E3 (codename Delta) videophone
   7  *
   8  * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18
  19 #include <asm/hardware.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/map.h>
  23
  24 #include <asm/arch/board-ams-delta.h>
  25 #include <asm/arch/gpio.h>
  26 #include <asm/arch/mux.h>
  27 #include <asm/arch/usb.h>
  28 #include <asm/arch/board.h>
  29 #include <asm/arch/common.h>
  30
  31 static u8 ams_delta_latch1_reg;
  32 static u16 ams_delta_latch2_reg;
  33
  34 void ams_delta_latch1_write(u8 mask, u8 value)
  35 {
  36         ams_delta_latch1_reg &= ~mask;
  37         ams_delta_latch1_reg |= value;
  38         *(volatile __u8 *) AMS_DELTA_LATCH1_VIRT = ams_delta_latch1_reg;
  39 }
  40
  41 void ams_delta_latch2_write(u16 mask, u16 value)
  42 {
  43         ams_delta_latch2_reg &= ~mask;
  44         ams_delta_latch2_reg |= value;
  45         *(volatile __u16 *) AMS_DELTA_LATCH2_VIRT = ams_delta_latch2_reg;
  46 }
  47
  48 static void __init ams_delta_init_irq(void)
  49 {
  50         omap1_init_common_hw();
  51         omap_init_irq();
  52         omap_gpio_init();
  53 }
  54
  55 static struct map_desc ams_delta_io_desc[] __initdata = {
  56         // AMS_DELTA_LATCH1
  57         {
  58                 .virtual        = AMS_DELTA_LATCH1_VIRT,
  59                 .pfn            = __phys_to_pfn(AMS_DELTA_LATCH1_PHYS),
  60                 .length         = 0x01000000,
  61                 .type           = MT_DEVICE
  62         },
  63         // AMS_DELTA_LATCH2
  64         {
  65                 .virtual        = AMS_DELTA_LATCH2_VIRT,
  66                 .pfn            = __phys_to_pfn(AMS_DELTA_LATCH2_PHYS),
  67                 .length         = 0x01000000,
  68                 .type           = MT_DEVICE
  69         },
  70         // AMS_DELTA_MODEM
  71         {
  72                 .virtual        = AMS_DELTA_MODEM_VIRT,
  73                 .pfn            = __phys_to_pfn(AMS_DELTA_MODEM_PHYS),
  74                 .length         = 0x01000000,
  75                 .type           = MT_DEVICE
  76         }
  77 };
  78
  79 static struct omap_uart_config ams_delta_uart_config __initdata = {
  80         .enabled_uarts = 1,
  81 };
  82
  83 static struct omap_board_config_kernel ams_delta_config[] = {
  84         { OMAP_TAG_UART,        &ams_delta_uart_config },
  85 };
  86
  87 static void __init ams_delta_init(void)
  88 {
  89         iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
  90
  91         omap_board_config = ams_delta_config;
  92         omap_board_config_size = ARRAY_SIZE(ams_delta_config);
  93         omap_serial_init();
  94
  95         /* Clear latch2 (NAND, LCD, modem enable) */
  96         ams_delta_latch2_write(~0, 0);
  97 }
  98
  99 static void __init ams_delta_map_io(void)
 100 {
 101         omap1_map_common_io();
 102 }
 103
 104 MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)")
 105         /* Maintainer: Jonathan McDowell <noodles@earth.li> */
 106         .phys_io        = 0xfff00000,
 107         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 108         .boot_params    = 0x10000100,
 109         .map_io         = ams_delta_map_io,
 110         .init_irq       = ams_delta_init_irq,
 111         .init_machine   = ams_delta_init,
 112         .timer          = &omap_timer,
 113 MACHINE_END
 114
 115 EXPORT_SYMBOL(ams_delta_latch1_write);
 116 EXPORT_SYMBOL(ams_delta_latch2_write);