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