xcep.c

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/*  linux/arch/arm/mach-pxa/xcep.c
 *
 *  Support for the Iskratel Electronics XCEP platform as used in
 *  the Libera instruments from Instrumentation Technologies.
 *
 *  Author:     Ales Bardorfer <[email protected]>
 *  Contributions by: Abbott, MG (Michael) <[email protected]>
 *  Contributions by: Matej Kenda <[email protected]>
 *  Created:    June 2006
 *  Copyright:  (C) 2006-2009 Instrumentation Technologies
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 */

#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/smc91x.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/map.h>

#include <mach/hardware.h>
#include <mach/pxa25x.h>
#include <mach/smemc.h>

#include "generic.h"

#define XCEP_ETH_PHYS       (PXA_CS3_PHYS + 0x00000300)
#define XCEP_ETH_PHYS_END   (PXA_CS3_PHYS + 0x000fffff)
#define XCEP_ETH_ATTR       (PXA_CS3_PHYS + 0x02000000)
#define XCEP_ETH_ATTR_END   (PXA_CS3_PHYS + 0x020fffff)
#define XCEP_ETH_IRQ        IRQ_GPIO0

/*  XCEP CPLD base */
#define XCEP_CPLD_BASE      0xf0000000


/* Flash partitions. */

static struct mtd_partition xcep_partitions[] = {
    {
        .name =     "Bootloader",
        .size =     0x00040000,
        .offset =   0,
        .mask_flags =   MTD_WRITEABLE
    }, {
        .name =     "Bootloader ENV",
        .size =     0x00040000,
        .offset =   0x00040000,
        .mask_flags =   MTD_WRITEABLE
    }, {
        .name =     "Kernel",
        .size =     0x00100000,
        .offset =   0x00080000,
    }, {
        .name =     "Rescue fs",
        .size =     0x00280000,
        .offset =   0x00180000,
    }, {
        .name =     "Filesystem",
        .size =     MTDPART_SIZ_FULL,
        .offset =   0x00400000
    }
};

static struct physmap_flash_data xcep_flash_data[] = {
    {
        .width      = 4,        /* bankwidth in bytes */
        .parts      = xcep_partitions,
        .nr_parts   = ARRAY_SIZE(xcep_partitions)
    }
};

static struct resource flash_resource = {
    .start  = PXA_CS0_PHYS,
    .end    = PXA_CS0_PHYS + SZ_32M - 1,
    .flags  = IORESOURCE_MEM,
};

static struct platform_device flash_device = {
    .name   = "physmap-flash",
    .id = 0,
    .dev    = {
        .platform_data = xcep_flash_data,
    },
    .resource = &flash_resource,
    .num_resources = 1,
};



/* SMC LAN91C111 network controller. */

static struct resource smc91x_resources[] = {
    [0] = {
        .name   = "smc91x-regs",
        .start  = XCEP_ETH_PHYS,
        .end    = XCEP_ETH_PHYS_END,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = XCEP_ETH_IRQ,
        .end    = XCEP_ETH_IRQ,
        .flags  = IORESOURCE_IRQ,
    },
    [2] = {
        .name   = "smc91x-attrib",
        .start  = XCEP_ETH_ATTR,
        .end    = XCEP_ETH_ATTR_END,
        .flags  = IORESOURCE_MEM,
    },
};

static struct smc91x_platdata xcep_smc91x_info = {
    .flags  = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
};

static struct platform_device smc91x_device = {
    .name       = "smc91x",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource   = smc91x_resources,
    .dev        = {
        .platform_data = &xcep_smc91x_info,
    },
};


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


/* We have to state that there are HWMON devices on the I2C bus on XCEP.
 * Drivers for HWMON verify capabilities of the adapter when loading and
 * refuse to attach if the adapter doesn't support HWMON class of devices. */
static struct i2c_pxa_platform_data xcep_i2c_platform_data  = {
    .class = I2C_CLASS_HWMON
};


static mfp_cfg_t xcep_pin_config[] __initdata = {
    GPIO79_nCS_3,   /* SMC 91C111 chip select. */
    GPIO80_nCS_4,   /* CPLD chip select. */
    /* SSP communication to MSP430 */
    GPIO23_SSP1_SCLK,
    GPIO24_SSP1_SFRM,
    GPIO25_SSP1_TXD,
    GPIO26_SSP1_RXD,
    GPIO27_SSP1_EXTCLK
};

static void __init xcep_init(void)
{
    pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));

    pxa_set_ffuart_info(NULL);
    pxa_set_btuart_info(NULL);
    pxa_set_stuart_info(NULL);
    pxa_set_hwuart_info(NULL);

    /* See Intel XScale Developer's Guide for details */
    /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
    __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
    /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
    __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);

    platform_add_devices(ARRAY_AND_SIZE(devices));
    pxa_set_i2c_info(&xcep_i2c_platform_data);
}

MACHINE_START(XCEP, "Iskratel XCEP")
    .atag_offset    = 0x100,
    .init_machine   = xcep_init,
    .map_io     = pxa25x_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa25x_init_irq,
    .handle_irq = pxa25x_handle_irq,
    .timer      = &pxa_timer,
    .restart    = pxa_restart,
MACHINE_END