LXR linux/arch/arm/mach-sa1100/pleb.c

   1/*
   2 * linux/arch/arm/mach-sa1100/pleb.c
   3 */
   4
   5#include <linux/init.h>
   6#include <linux/kernel.h>
   7#include <linux/tty.h>
   8#include <linux/ioport.h>
   9#include <linux/platform_device.h>
  10#include <linux/irq.h>
  11#include <linux/io.h>
  12#include <linux/mtd/partitions.h>
  13
  14#include <mach/hardware.h>
  15#include <asm/setup.h>
  16#include <asm/mach-types.h>
  17
  18#include <asm/mach/arch.h>
  19#include <asm/mach/map.h>
  20#include <asm/mach/flash.h>
  21#include <asm/mach/serial_sa1100.h>
  22#include <mach/irqs.h>
  23
  24#include "generic.h"
  25
  26
  27/*
  28 * Ethernet IRQ mappings
  29 */
  30
  31#define PLEB_ETH0_P             (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
  32#define PLEB_ETH0_V             (0xf6000300)
  33
  34#define GPIO_ETH0_IRQ           GPIO_GPIO(21)
  35#define GPIO_ETH0_EN            GPIO_GPIO(26)
  36
  37#define IRQ_GPIO_ETH0_IRQ       IRQ_GPIO21
  38
  39static struct resource smc91x_resources[] = {
  40        [0] = {
  41                .start  = PLEB_ETH0_P,
  42                .end    = PLEB_ETH0_P | 0x03ffffff,
  43                .flags  = IORESOURCE_MEM,
  44        },
  45#if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
  46        [1] = {
  47                .start  = IRQ_GPIO_ETH0_IRQ,
  48                .end    = IRQ_GPIO_ETH0_IRQ,
  49                .flags  = IORESOURCE_IRQ,
  50        },
  51#endif
  52};
  53
  54
  55static struct platform_device smc91x_device = {
  56        .name           = "smc91x",
  57        .id             = 0,
  58        .num_resources  = ARRAY_SIZE(smc91x_resources),
  59        .resource       = smc91x_resources,
  60};
  61
  62static struct platform_device *devices[] __initdata = {
  63        &smc91x_device,
  64};
  65
  66
  67/*
  68 * Pleb's memory map
  69 * has flash memory (typically 4 or 8 meg) selected by
  70 * the two SA1100 lowest chip select outputs.
  71 */
  72static struct resource pleb_flash_resources[] = {
  73        [0] = {
  74                .start = SA1100_CS0_PHYS,
  75                .end   = SA1100_CS0_PHYS + SZ_8M - 1,
  76                .flags = IORESOURCE_MEM,
  77        },
  78        [1] = {
  79                .start = SA1100_CS1_PHYS,
  80                .end   = SA1100_CS1_PHYS + SZ_8M - 1,
  81                .flags = IORESOURCE_MEM,
  82        }
  83};
  84
  85
  86static struct mtd_partition pleb_partitions[] = {
  87        {
  88                .name           = "blob",
  89                .offset         = 0,
  90                .size           = 0x00020000,
  91        }, {
  92                .name           = "kernel",
  93                .offset         = MTDPART_OFS_APPEND,
  94                .size           = 0x000e0000,
  95        }, {
  96                .name           = "rootfs",
  97                .offset         = MTDPART_OFS_APPEND,
  98                .size           = 0x00300000,
  99        }
 100};
 101
 102
 103static struct flash_platform_data pleb_flash_data = {
 104        .map_name = "cfi_probe",
 105        .parts = pleb_partitions,
 106        .nr_parts = ARRAY_SIZE(pleb_partitions),
 107};
 108
 109
 110static void __init pleb_init(void)
 111{
 112        sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
 113                              ARRAY_SIZE(pleb_flash_resources));
 114
 115
 116        platform_add_devices(devices, ARRAY_SIZE(devices));
 117}
 118
 119
 120static void __init pleb_map_io(void)
 121{
 122        sa1100_map_io();
 123
 124        sa1100_register_uart(0, 3);
 125        sa1100_register_uart(1, 1);
 126
 127        GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 128        GPDR |= GPIO_UART_TXD;
 129        GPDR &= ~GPIO_UART_RXD;
 130        PPAR |= PPAR_UPR;
 131
 132        /*
 133         * Fix expansion memory timing for network card
 134         */
 135        MECR = ((2<<10) | (2<<5) | (2<<0));
 136
 137        /*
 138         * Enable the SMC ethernet controller
 139         */
 140        GPDR |= GPIO_ETH0_EN;   /* set to output */
 141        GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 142
 143        GPDR &= ~GPIO_ETH0_IRQ;
 144
 145        set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
 146}
 147
 148MACHINE_START(PLEB, "PLEB")
 149        .map_io         = pleb_map_io,
 150        .init_irq       = sa1100_init_irq,
 151        .timer          = &sa1100_timer,
 152        .init_machine   = pleb_init,
 153MACHINE_END
 154