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_data/sa11x0-serial.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/irq.h>
  12 #include <linux/io.h>
  13 #include <linux/mtd/partitions.h>
  14 #include <linux/smc91x.h>
  15
  16 #include <mach/hardware.h>
  17 #include <asm/setup.h>
  18 #include <asm/mach-types.h>
  19
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach/map.h>
  22 #include <asm/mach/flash.h>
  23 #include <mach/irqs.h>
  24
  25 #include "generic.h"
  26
  27
  28 /*
  29  * Ethernet IRQ mappings
  30  */
  31
  32 #define PLEB_ETH0_P             (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
  33 #define PLEB_ETH0_V             (0xf6000300)
  34
  35 #define GPIO_ETH0_IRQ           GPIO_GPIO(21)
  36 #define GPIO_ETH0_EN            GPIO_GPIO(26)
  37
  38 #define IRQ_GPIO_ETH0_IRQ       IRQ_GPIO21
  39
  40 static struct resource smc91x_resources[] = {
  41         [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
  42 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
  43         [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
  44 #endif
  45 };
  46
  47 static struct smc91x_platdata smc91x_platdata = {
  48         .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
  49 };
  50
  51 static struct platform_device smc91x_device = {
  52         .name           = "smc91x",
  53         .id             = 0,
  54         .num_resources  = ARRAY_SIZE(smc91x_resources),
  55         .resource       = smc91x_resources,
  56         .dev = {
  57                 .platform_data  = &smc91x_platdata,
  58         },
  59 };
  60
  61 static struct platform_device *devices[] __initdata = {
  62         &smc91x_device,
  63 };
  64
  65
  66 /*
  67  * Pleb's memory map
  68  * has flash memory (typically 4 or 8 meg) selected by
  69  * the two SA1100 lowest chip select outputs.
  70  */
  71 static struct resource pleb_flash_resources[] = {
  72         [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
  73         [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
  74 };
  75
  76
  77 static struct mtd_partition pleb_partitions[] = {
  78         {
  79                 .name           = "blob",
  80                 .offset         = 0,
  81                 .size           = 0x00020000,
  82         }, {
  83                 .name           = "kernel",
  84                 .offset         = MTDPART_OFS_APPEND,
  85                 .size           = 0x000e0000,
  86         }, {
  87                 .name           = "rootfs",
  88                 .offset         = MTDPART_OFS_APPEND,
  89                 .size           = 0x00300000,
  90         }
  91 };
  92
  93
  94 static struct flash_platform_data pleb_flash_data = {
  95         .map_name = "cfi_probe",
  96         .parts = pleb_partitions,
  97         .nr_parts = ARRAY_SIZE(pleb_partitions),
  98 };
  99
 100
 101 static void __init pleb_init(void)
 102 {
 103         sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
 104                               ARRAY_SIZE(pleb_flash_resources));
 105
 106
 107         platform_add_devices(devices, ARRAY_SIZE(devices));
 108 }
 109
 110
 111 static void __init pleb_map_io(void)
 112 {
 113         sa1100_map_io();
 114
 115         sa1100_register_uart(0, 3);
 116         sa1100_register_uart(1, 1);
 117
 118         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 119         GPDR |= GPIO_UART_TXD;
 120         GPDR &= ~GPIO_UART_RXD;
 121         PPAR |= PPAR_UPR;
 122
 123         /*
 124          * Fix expansion memory timing for network card
 125          */
 126         MECR = ((2<<10) | (2<<5) | (2<<0));
 127
 128         /*
 129          * Enable the SMC ethernet controller
 130          */
 131         GPDR |= GPIO_ETH0_EN;   /* set to output */
 132         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 133
 134         GPDR &= ~GPIO_ETH0_IRQ;
 135
 136         irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
 137 }
 138
 139 MACHINE_START(PLEB, "PLEB")
 140         .map_io         = pleb_map_io,
 141         .nr_irqs        = SA1100_NR_IRQS,
 142         .init_irq       = sa1100_init_irq,
 143         .init_time      = sa1100_timer_init,
 144         .init_machine   = pleb_init,
 145         .init_late      = sa11x0_init_late,
 146         .restart        = sa11x0_restart,
 147 MACHINE_END