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 <ales@i-tech.si>
* Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
* Contributions by: Matej Kenda <matej.kenda@i-tech.si>
* 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,
.init_time = pxa_timer_init,
.restart = pxa_restart,
MACHINE_END