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 #include <linux/gpio.h>
  18
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/time.h>
  22
  23 #include <mach/common.h>
  24 #include <mach/hardware.h>
  25 #include <mach/iomux-mx1.h>
  26
  27 #include "devices-imx1.h"
  28
  29 /*
  30  * This scb9328 has a 32MiB flash
  31  */
  32 static struct resource flash_resource = {
  33         .start  = MX1_CS0_PHYS,
  34         .end    = MX1_CS0_PHYS + (32 * 1024 * 1024) - 1,
  35         .flags  = IORESOURCE_MEM,
  36 };
  37
  38 static struct physmap_flash_data scb_flash_data = {
  39         .width  = 2,
  40 };
  41
  42 static struct platform_device scb_flash_device = {
  43         .name           = "physmap-flash",
  44         .id             = 0,
  45         .dev = {
  46                 .platform_data = &scb_flash_data,
  47         },
  48         .resource = &flash_resource,
  49         .num_resources = 1,
  50 };
  51
  52 /*
  53  * scb9328 has a DM9000 network controller
  54  * connected to CS5, with 16 bit data path
  55  * and interrupt connected to GPIO 3
  56  */
  57
  58 /*
  59  * internal datapath is fixed 16 bit
  60  */
  61 static struct dm9000_plat_data dm9000_platdata = {
  62         .flags  = DM9000_PLATF_16BITONLY,
  63 };
  64
  65 /*
  66  * the DM9000 drivers wants two defined address spaces
  67  * to gain access to address latch registers and the data path.
  68  */
  69 static struct resource dm9000x_resources[] = {
  70         {
  71                 .name   = "address area",
  72                 .start  = MX1_CS5_PHYS,
  73                 .end    = MX1_CS5_PHYS + 1,
  74                 .flags  = IORESOURCE_MEM,       /* address access */
  75         }, {
  76                 .name   = "data area",
  77                 .start  = MX1_CS5_PHYS + 4,
  78                 .end    = MX1_CS5_PHYS + 5,
  79                 .flags  = IORESOURCE_MEM,       /* data access */
  80         }, {
  81                 /* irq number is run-time assigned */
  82                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  83         },
  84 };
  85
  86 static struct platform_device dm9000x_device = {
  87         .name           = "dm9000",
  88         .id             = 0,
  89         .num_resources  = ARRAY_SIZE(dm9000x_resources),
  90         .resource       = dm9000x_resources,
  91         .dev            = {
  92                 .platform_data = &dm9000_platdata,
  93         }
  94 };
  95
  96 static const int mxc_uart1_pins[] = {
  97         PC9_PF_UART1_CTS,
  98         PC10_PF_UART1_RTS,
  99         PC11_PF_UART1_TXD,
 100         PC12_PF_UART1_RXD,
 101 };
 102
 103 static const struct imxuart_platform_data uart_pdata __initconst = {
 104         .flags = IMXUART_HAVE_RTSCTS,
 105 };
 106
 107 static struct platform_device *devices[] __initdata = {
 108         &scb_flash_device,
 109         &dm9000x_device,
 110 };
 111
 112 /*
 113  * scb9328_init - Init the CPU card itself
 114  */
 115 static void __init scb9328_init(void)
 116 {
 117         imx1_soc_init();
 118
 119         mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
 120                         ARRAY_SIZE(mxc_uart1_pins), "UART1");
 121
 122         imx1_add_imx_uart0(&uart_pdata);
 123
 124         printk(KERN_INFO"Scb9328: Adding devices\n");
 125         dm9000x_resources[2].start = gpio_to_irq(IMX_GPIO_NR(3, 3));
 126         dm9000x_resources[2].end = gpio_to_irq(IMX_GPIO_NR(3, 3));
 127         platform_add_devices(devices, ARRAY_SIZE(devices));
 128 }
 129
 130 static void __init scb9328_timer_init(void)
 131 {
 132         mx1_clocks_init(32000);
 133 }
 134
 135 static struct sys_timer scb9328_timer = {
 136         .init   = scb9328_timer_init,
 137 };
 138
 139 MACHINE_START(SCB9328, "Synertronixx scb9328")
 140         /* Sascha Hauer */
 141         .atag_offset = 100,
 142         .map_io = mx1_map_io,
 143         .init_early = imx1_init_early,
 144         .init_irq = mx1_init_irq,
 145         .handle_irq = imx1_handle_irq,
 146         .timer = &scb9328_timer,
 147         .init_machine = scb9328_init,
 148         .restart        = mxc_restart,
 149 MACHINE_END