innokom.c

来自「优龙2410linux2.6.8内核源代码」· C语言 代码 · 共 206 行

/*
 *  linux/arch/arm/mach-pxa/innokom.c
 *
 * (c) 2004 Robert Schwebel <[e-mail]>, Pengutronix
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/interrupt.h>

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

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

#include <asm/arch/irq.h>
//#include <asm/arch/irqs.h>
#include <asm/arch/innokom.h>

#include "generic.h"

/*
 * Interrupt Handler for Software Update button
 */
static irqreturn_t sw_update_handler(int irq, void* dev_id,struct pt_regs* regs)
{
	printk("software update button pressed (I'm the dummy irq handler)\n");
	printk("USIR0  = %08x\n", USIR0);
	printk("UDCCR  = %08x\n", UDCCR);
	printk("UDCCS0 = %08x\n", UDCCS0);

	return IRQ_HANDLED;
}

/*
 * Interrupt Handler for Reset button
 */
static irqreturn_t reset_handler(int irq, void* dev_id,struct pt_regs* regs)
{
	return IRQ_HANDLED;
}


/* 
 * Interrupt Initialisation
 */
static void __init innokom_init_irq(void)
{
	pxa_init_irq();
	
	set_irq_type(INNOKOM_SW_UPDATE_IRQ, INNOKOM_SW_UPDATE_IRQ_EDGE);
	set_irq_type(INNOKOM_RESET_IRQ, INNOKOM_RESET_IRQ_EDGE);
	set_irq_type(INNOKOM_ETH_IRQ, INNOKOM_ETH_IRQ_EDGE);
	set_irq_type(INNOKOM_USB_DISC_IRQ, INNOKOM_USB_DISC_IRQ_EDGE);
}

/*
 * Ressource entries for onboard devices
 */

static struct resource smc91x_resources[] = {
        [0] = {
                .start  = INNOKOM_ETH_PHYS,
                .end    = INNOKOM_ETH_PHYS + INNOKOM_ETH_SIZE - 1,
                .flags  = IORESOURCE_MEM,
        },
        [1] = {
                .start  = INNOKOM_ETH_IRQ,
                .end    = INNOKOM_ETH_IRQ,
                .flags  = IORESOURCE_IRQ,
        },
};

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

static struct resource innokom_switches_resources[] = {
        [0] = {
                .start  = INNOKOM_SW_UPDATE_IRQ,
                .end    = INNOKOM_SW_UPDATE_IRQ,
                .flags  = IORESOURCE_IRQ,
        },
        [1] = {
                .start  = INNOKOM_RESET_IRQ,
                .end    = INNOKOM_RESET_IRQ,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct platform_device innokom_switches_device = {
	.name		= "innokom switches",
	.id		= 1,
	.num_resources	= ARRAY_SIZE(innokom_switches_resources),
	.resource	= innokom_switches_resources,
};

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

/*
 * Specific Board Initialisation
 */
static int __init innokom_init(void)
{
	/* init innokom irqs */

	/* reset button */
	if (request_irq(INNOKOM_RESET_IRQ, &reset_handler, 0, "reset button", NULL))
		printk(KERN_INFO "innokom: can't get assigned irq %i\n (reset button)",INNOKOM_RESET_IRQ);
	else
		set_irq_type(INNOKOM_RESET_IRQ, INNOKOM_RESET_IRQ_EDGE);

	/* sw update button */
	if (request_irq(INNOKOM_SW_UPDATE_IRQ, &sw_update_handler, 0, "software update button", NULL))
		printk(KERN_INFO "innokom: can't get assigned irq %i (sw update button)\n", INNOKOM_SW_UPDATE_IRQ);
	else
		set_irq_type(INNOKOM_SW_UPDATE_IRQ, INNOKOM_SW_UPDATE_IRQ_EDGE);

	/* smc91111 ethernet irq */
//	set_irq_type(INNOKOM_ETH_IRQ, INNOKOM_ETH_IRQ_EDGE);

	/* USB disconnect irq */
//	set_irq_type(INNOKOM_USB_DISC_IRQ, INNOKOM_USB_DISC_IRQ_EDGE);

	/* add device entries */
	return platform_add_devices(devices, ARRAY_SIZE(devices));
}

subsys_initcall(innokom_init);

/* memory mapping */
static struct map_desc innokom_io_desc[] __initdata = {
/*  virtual           physical          length            type                           */
  { INNOKOM_ETH_VIRT, INNOKOM_ETH_PHYS, INNOKOM_ETH_SIZE, MT_DEVICE }, /* ETH SMSC 91111 */
};

static void __init innokom_map_io(void)
{
	pxa_map_io();
	iotable_init(innokom_io_desc, ARRAY_SIZE(innokom_io_desc));

	/* Enable the BTUART */
	CKEN |= CKEN7_BTUART;
	pxa_gpio_mode(GPIO42_BTRXD_MD);
	pxa_gpio_mode(GPIO43_BTTXD_MD);
	pxa_gpio_mode(GPIO44_BTCTS_MD);
	pxa_gpio_mode(GPIO45_BTRTS_MD);

	pxa_gpio_mode(GPIO33_nCS_5_MD);	/* SMSC network chip */

	/* setup sleep mode values */
	PWER  = 0x00000002;
	PFER  = 0x00000000;
	PRER  = 0x00000002;
	PGSR0 = 0x00008000;
	PGSR1 = 0x003F0202;
	PGSR2 = 0x0001C000;
	PCFR |= PCFR_OPDE;
}

/* FIXME: memory tags should be set correctly */
static void __init innokom_fixup(struct machine_desc *desc, 
				 struct tag *tag, 
				 char **cmdline, struct meminfo *mi)
{
	SET_BANK(0, 0xa0000000, (64*1024*1024));
	mi->nr_banks = 1;
}

MACHINE_START(INNOKOM, "Auerswald Innokom")
	MAINTAINER("Robert Schwebel, Pengutronix")
	BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
	BOOT_PARAMS(0xa0000100)
	FIXUP(innokom_fixup)
	MAPIO(innokom_map_io)
	INITIRQ(innokom_init_irq)
MACHINE_END