/*
* Support for the Arcom ZEUS.
*
* Copyright (C) 2006 Arcom Control Systems Ltd.
*
* Loosely based on Arcom's 2.6.16.28.
* Maintained by Marc Zyngier <maz@misterjones.org>
*
* 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/cpufreq.h>
#include <linux/interrupt.h>
#include <linux/leds.h>
#include <linux/irq.h>
#include <linux/pm.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/serial_8250.h>
#include <linux/dm9000.h>
#include <linux/mmc/host.h>
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/platform_data/i2c-pxa.h>
#include <linux/platform_data/pca953x.h>
#include <linux/apm-emulation.h>
#include <linux/can/platform/mcp251x.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <asm/mach-types.h>
#include <asm/suspend.h>
#include <asm/system_info.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "pxa27x.h"
#include "devices.h"
#include <mach/regs-uart.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/mmc-pxamci.h>
#include "pxa27x-udc.h"
#include "udc.h"
#include <linux/platform_data/video-pxafb.h>
#include "pm.h"
#include <mach/audio.h>
#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
#include "zeus.h"
#include <mach/smemc.h>
#include "generic.h"
/*
* Interrupt handling
*/
static unsigned long zeus_irq_enabled_mask;
static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
static const int zeus_isa_irq_map[] = {
0, /* ISA irq #0, invalid */
0, /* ISA irq #1, invalid */
0, /* ISA irq #2, invalid */
1 << 0, /* ISA irq #3 */
1 << 1, /* ISA irq #4 */
1 << 2, /* ISA irq #5 */
1 << 3, /* ISA irq #6 */
1 << 4, /* ISA irq #7 */
0, /* ISA irq #8, invalid */
0, /* ISA irq #9, invalid */
1 << 5, /* ISA irq #10 */
1 << 6, /* ISA irq #11 */
1 << 7, /* ISA irq #12 */
};
static inline int zeus_irq_to_bitmask(unsigned int irq)
{
return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
}
static inline int zeus_bit_to_irq(int bit)
{
return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
}
static void zeus_ack_irq(struct irq_data *d)
{
__raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
}
static void zeus_mask_irq(struct irq_data *d)
{
zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
}
static void zeus_unmask_irq(struct irq_data *d)
{
zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
}
static inline unsigned long zeus_irq_pending(void)
{
return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
}
static void zeus_irq_handler(struct irq_desc *desc)
{
unsigned int irq;
unsigned long pending;
pending = zeus_irq_pending();
do {
/* we're in a chained irq handler,
* so ack the interrupt by hand */
desc->irq_data.chip->irq_ack(&desc->irq_data);
if (likely(pending)) {
irq = zeus_bit_to_irq(__ffs(pending));
generic_handle_irq(irq);
}
pending = zeus_irq_pending();
} while (pending);
}
static struct irq_chip zeus_irq_chip = {
.name = "ISA",
.irq_ack = zeus_ack_irq,
.irq_mask = zeus_mask_irq,
.irq_unmask = zeus_unmask_irq,
};
static void __init zeus_init_irq(void)
{
int level;
int isa_irq;
pxa27x_init_irq();
/* Peripheral IRQs. It would be nice to move those inside driver
configuration, but it is not supported at the moment. */
irq_set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
irq_set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
irq_set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
irq_set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),
IRQ_TYPE_EDGE_FALLING);
irq_set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING);
/* Setup ISA IRQs */
for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
isa_irq = zeus_bit_to_irq(level);
irq_set_chip_and_handler(isa_irq, &zeus_irq_chip,
handle_edge_irq);
irq_clear_status_flags(isa_irq, IRQ_NOREQUEST | IRQ_NOPROBE);
}
irq_set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
irq_set_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
}
/*
* Platform devices
*/
/* Flash */
static struct resource zeus_mtd_resources[] = {
[0] = { /* NOR Flash (up to 64MB) */
.start = ZEUS_FLASH_PHYS,
.end = ZEUS_FLASH_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
},
[1] = { /* SRAM */
.start = ZEUS_SRAM_PHYS,
.