pleb.c

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

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/mtd/partitions.h>

#include <mach/hardware.h>
#include <asm/setup.h>
#include <asm/mach-types.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>
#include <asm/mach/serial_sa1100.h>
#include <mach/irqs.h>

#include "generic.h"


/*
 * Ethernet IRQ mappings
 */

#define PLEB_ETH0_P     (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
#define PLEB_ETH0_V     (0xf6000300)

#define GPIO_ETH0_IRQ       GPIO_GPIO(21)
#define GPIO_ETH0_EN        GPIO_GPIO(26)

#define IRQ_GPIO_ETH0_IRQ   IRQ_GPIO21

static struct resource smc91x_resources[] = {
    [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
#if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
    [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
#endif
};


static struct platform_device smc91x_device = {
    .name       = "smc91x",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource   = smc91x_resources,
};

static struct platform_device *devices[] __initdata = {
    &smc91x_device,
};


/*
 * Pleb's memory map
 * has flash memory (typically 4 or 8 meg) selected by
 * the two SA1100 lowest chip select outputs.
 */
static struct resource pleb_flash_resources[] = {
    [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
    [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
};


static struct mtd_partition pleb_partitions[] = {
    {
        .name       = "blob",
        .offset     = 0,
        .size       = 0x00020000,
    }, {
        .name       = "kernel",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 0x000e0000,
    }, {
        .name       = "rootfs",
        .offset     = MTDPART_OFS_APPEND,
        .size       = 0x00300000,
    }
};


static struct flash_platform_data pleb_flash_data = {
    .map_name = "cfi_probe",
    .parts = pleb_partitions,
    .nr_parts = ARRAY_SIZE(pleb_partitions),
};


static void __init pleb_init(void)
{
    sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
                  ARRAY_SIZE(pleb_flash_resources));


    platform_add_devices(devices, ARRAY_SIZE(devices));
}


static void __init pleb_map_io(void)
{
    sa1100_map_io();

    sa1100_register_uart(0, 3);
    sa1100_register_uart(1, 1);

    GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
    GPDR |= GPIO_UART_TXD;
    GPDR &= ~GPIO_UART_RXD;
    PPAR |= PPAR_UPR;

    /*
     * Fix expansion memory timing for network card
     */
    MECR = ((2<<10) | (2<<5) | (2<<0));

    /*
     * Enable the SMC ethernet controller
     */
    GPDR |= GPIO_ETH0_EN;   /* set to output */
    GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */

    GPDR &= ~GPIO_ETH0_IRQ;

    irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
}

MACHINE_START(PLEB, "PLEB")
    .map_io     = pleb_map_io,
    .nr_irqs    = SA1100_NR_IRQS,
    .init_irq   = sa1100_init_irq,
    .timer      = &sa1100_timer,
    .init_machine   = pleb_init,
    .init_late  = sa11x0_init_late,
    .restart    = sa11x0_restart,
MACHINE_END