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
  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                 .start  = IRQ_GPIOC(3),
  82                 .end    = IRQ_GPIOC(3),
  83                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  84         },
  85 };
  86
  87 static struct platform_device dm9000x_device = {
  88         .name           = "dm9000",
  89         .id             = 0,
  90         .num_resources  = ARRAY_SIZE(dm9000x_resources),
  91         .resource       = dm9000x_resources,
  92         .dev            = {
  93                 .platform_data = &dm9000_platdata,
  94         }
  95 };
  96
  97 static const int mxc_uart1_pins[] = {
  98         PC9_PF_UART1_CTS,
  99         PC10_PF_UART1_RTS,
 100         PC11_PF_UART1_TXD,
 101         PC12_PF_UART1_RXD,
 102 };
 103
 104 static int uart1_mxc_init(struct platform_device *pdev)
 105 {
 106         return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
 107                         ARRAY_SIZE(mxc_uart1_pins), "UART1");
 108 }
 109
 110 static void uart1_mxc_exit(struct platform_device *pdev)
 111 {
 112         mxc_gpio_release_multiple_pins(mxc_uart1_pins,
 113                         ARRAY_SIZE(mxc_uart1_pins));
 114 }
 115
 116 static const struct imxuart_platform_data uart_pdata __initconst = {
 117         .init = uart1_mxc_init,
 118         .exit = uart1_mxc_exit,
 119         .flags = IMXUART_HAVE_RTSCTS,
 120 };
 121
 122 static struct platform_device *devices[] __initdata = {
 123         &scb_flash_device,
 124         &dm9000x_device,
 125 };
 126
 127 /*
 128  * scb9328_init - Init the CPU card itself
 129  */
 130 static void __init scb9328_init(void)
 131 {
 132         imx1_add_imx_uart0(&uart_pdata);
 133
 134         printk(KERN_INFO"Scb9328: Adding devices\n");
 135         platform_add_devices(devices, ARRAY_SIZE(devices));
 136 }
 137
 138 static void __init scb9328_timer_init(void)
 139 {
 140         mx1_clocks_init(32000);
 141 }
 142
 143 static struct sys_timer scb9328_timer = {
 144         .init   = scb9328_timer_init,
 145 };
 146
 147 MACHINE_START(SCB9328, "Synertronixx scb9328")
 148         /* Sascha Hauer */
 149         .boot_params = 0x08000100,
 150         .map_io = mx1_map_io,
 151         .init_early = imx1_init_early,
 152         .init_irq = mx1_init_irq,
 153         .timer = &scb9328_timer,
 154         .init_machine = scb9328_init,
 155 MACHINE_END