release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-imx/mach-scb9328.c

   1 /*
   2  * linux/arch/arm/mach-mx1/mach-scb9328.c
   3  *
   4  * Copyright (c) 2004 Sascha Hauer <saschahauer@web.de>
   5  * Copyright (c) 2006-2008 Juergen Beisert <jbeisert@netscape.net>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  */
  12
  13 #include <linux/platform_device.h>
  14 #include <linux/mtd/physmap.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/dm9000.h>
  17
  18 #include <asm/mach-types.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/time.h>
  21
  22 #include <mach/common.h>
  23 #include <mach/hardware.h>
  24 #include <mach/irqs.h>
  25 #include <mach/iomux-mx1.h>
  26
  27 #include "devices-imx1.h"
  28 #include "devices.h"
  29
  30 /*
  31  * This scb9328 has a 32MiB flash
  32  */
  33 static struct resource flash_resource = {
  34         .start  = MX1_CS0_PHYS,
  35         .end    = MX1_CS0_PHYS + (32 * 1024 * 1024) - 1,
  36         .flags  = IORESOURCE_MEM,
  37 };
  38
  39 static struct physmap_flash_data scb_flash_data = {
  40         .width  = 2,
  41 };
  42
  43 static struct platform_device scb_flash_device = {
  44         .name           = "physmap-flash",
  45         .id             = 0,
  46         .dev = {
  47                 .platform_data = &scb_flash_data,
  48         },
  49         .resource = &flash_resource,
  50         .num_resources = 1,
  51 };
  52
  53 /*
  54  * scb9328 has a DM9000 network controller
  55  * connected to CS5, with 16 bit data path
  56  * and interrupt connected to GPIO 3
  57  */
  58
  59 /*
  60  * internal datapath is fixed 16 bit
  61  */
  62 static struct dm9000_plat_data dm9000_platdata = {
  63         .flags  = DM9000_PLATF_16BITONLY,
  64 };
  65
  66 /*
  67  * the DM9000 drivers wants two defined address spaces
  68  * to gain access to address latch registers and the data path.
  69  */
  70 static struct resource dm9000x_resources[] = {
  71         {
  72                 .name   = "address area",
  73                 .start  = MX1_CS5_PHYS,
  74                 .end    = MX1_CS5_PHYS + 1,
  75                 .flags  = IORESOURCE_MEM,       /* address access */
  76         }, {
  77                 .name   = "data area",
  78                 .start  = MX1_CS5_PHYS + 4,
  79                 .end    = MX1_CS5_PHYS + 5,
  80                 .flags  = IORESOURCE_MEM,       /* data access */
  81         }, {
  82                 .start  = IRQ_GPIOC(3),
  83                 .end    = IRQ_GPIOC(3),
  84                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  85         },
  86 };
  87
  88 static struct platform_device dm9000x_device = {
  89         .name           = "dm9000",
  90         .id             = 0,
  91         .num_resources  = ARRAY_SIZE(dm9000x_resources),
  92         .resource       = dm9000x_resources,
  93         .dev            = {
  94                 .platform_data = &dm9000_platdata,
  95         }
  96 };
  97
  98 static int mxc_uart1_pins[] = {
  99         PC9_PF_UART1_CTS,
 100         PC10_PF_UART1_RTS,
 101         PC11_PF_UART1_TXD,
 102         PC12_PF_UART1_RXD,
 103 };
 104
 105 static int uart1_mxc_init(struct platform_device *pdev)
 106 {
 107         return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
 108                         ARRAY_SIZE(mxc_uart1_pins), "UART1");
 109 }
 110
 111 static void uart1_mxc_exit(struct platform_device *pdev)
 112 {
 113         mxc_gpio_release_multiple_pins(mxc_uart1_pins,
 114                         ARRAY_SIZE(mxc_uart1_pins));
 115 }
 116
 117 static const struct imxuart_platform_data uart_pdata __initconst = {
 118         .init = uart1_mxc_init,
 119         .exit = uart1_mxc_exit,
 120         .flags = IMXUART_HAVE_RTSCTS,
 121 };
 122
 123 static struct platform_device *devices[] __initdata = {
 124         &scb_flash_device,
 125         &dm9000x_device,
 126 };
 127
 128 /*
 129  * scb9328_init - Init the CPU card itself
 130  */
 131 static void __init scb9328_init(void)
 132 {
 133         imx1_add_imx_uart0(&uart_pdata);
 134
 135         printk(KERN_INFO"Scb9328: Adding devices\n");
 136         platform_add_devices(devices, ARRAY_SIZE(devices));
 137 }
 138
 139 static void __init scb9328_timer_init(void)
 140 {
 141         mx1_clocks_init(32000);
 142 }
 143
 144 static struct sys_timer scb9328_timer = {
 145         .init   = scb9328_timer_init,
 146 };
 147
 148 MACHINE_START(SCB9328, "Synertronixx scb9328")
 149     /* Sascha Hauer */
 150         .phys_io        = 0x00200000,
 151         .io_pg_offst    = ((0xe0200000) >> 18) & 0xfffc,
 152         .boot_params    = 0x08000100,
 153         .map_io         = mx1_map_io,
 154         .init_irq       = mx1_init_irq,
 155         .timer          = &scb9328_timer,
 156         .init_machine   = scb9328_init,
 157 MACHINE_END